Fix possible issues with out-of-spec QP values
[x262.git] / encoder / encoder.c
1 /*****************************************************************************
2  * encoder.c: top-level encoder functions
3  *****************************************************************************
4  * Copyright (C) 2003-2012 x264 project
5  *
6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7  *          Loren Merritt <lorenm@u.washington.edu>
8  *          Jason Garrett-Glaser <darkshikari@gmail.com>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
23  *
24  * This program is also available under a commercial proprietary license.
25  * For more information, contact us at licensing@x264.com.
26  *****************************************************************************/
27
28 #include "common/common.h"
29
30 #include "set.h"
31 #include "analyse.h"
32 #include "ratecontrol.h"
33 #include "macroblock.h"
34 #include "me.h"
35
36 #if HAVE_VISUALIZE
37 #include "common/visualize.h"
38 #endif
39
40 //#define DEBUG_MB_TYPE
41
42 #define bs_write_ue bs_write_ue_big
43
44 static int x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
45                                    x264_nal_t **pp_nal, int *pi_nal,
46                                    x264_picture_t *pic_out );
47
48 /****************************************************************************
49  *
50  ******************************* x264 libs **********************************
51  *
52  ****************************************************************************/
53 static double x264_psnr( double sqe, double size )
54 {
55     double mse = sqe / (PIXEL_MAX*PIXEL_MAX * size);
56     if( mse <= 0.0000000001 ) /* Max 100dB */
57         return 100;
58
59     return -10.0 * log10( mse );
60 }
61
62 static double x264_ssim( double ssim )
63 {
64     double inv_ssim = 1 - ssim;
65     if( inv_ssim <= 0.0000000001 ) /* Max 100dB */
66         return 100;
67
68     return -10.0 * log10( inv_ssim );
69 }
70
71 static int x264_threadpool_wait_all( x264_t *h )
72 {
73     for( int i = 0; i < h->param.i_threads; i++ )
74         if( h->thread[i]->b_thread_active )
75         {
76             h->thread[i]->b_thread_active = 0;
77             if( (intptr_t)x264_threadpool_wait( h->threadpool, h->thread[i] ) < 0 )
78                 return -1;
79         }
80     return 0;
81 }
82
83 static void x264_frame_dump( x264_t *h )
84 {
85     FILE *f = fopen( h->param.psz_dump_yuv, "r+b" );
86     if( !f )
87         return;
88
89     /* Wait for the threads to finish deblocking */
90     if( h->param.b_sliced_threads )
91         x264_threadpool_wait_all( h );
92
93     /* Write the frame in display order */
94     int frame_size = FRAME_SIZE( h->param.i_height * h->param.i_width * sizeof(pixel) );
95     fseek( f, (uint64_t)h->fdec->i_frame * frame_size, SEEK_SET );
96     for( int p = 0; p < (CHROMA444 ? 3 : 1); p++ )
97         for( int y = 0; y < h->param.i_height; y++ )
98             fwrite( &h->fdec->plane[p][y*h->fdec->i_stride[p]], sizeof(pixel), h->param.i_width, f );
99     if( !CHROMA444 )
100     {
101         int cw = h->param.i_width>>1;
102         int ch = h->param.i_height>>CHROMA_V_SHIFT;
103         pixel *planeu = x264_malloc( (cw*ch*2+32)*sizeof(pixel) );
104         pixel *planev = planeu + cw*ch + 16;
105         h->mc.plane_copy_deinterleave( planeu, cw, planev, cw, h->fdec->plane[1], h->fdec->i_stride[1], cw, ch );
106         fwrite( planeu, 1, cw*ch*sizeof(pixel), f );
107         fwrite( planev, 1, cw*ch*sizeof(pixel), f );
108         x264_free( planeu );
109     }
110     fclose( f );
111 }
112
113 /* Fill "default" values */
114 static void x264_slice_header_init( x264_t *h, x264_slice_header_t *sh,
115                                     x264_sps_t *sps, x264_pps_t *pps,
116                                     int i_idr_pic_id, int i_frame, int i_qp )
117 {
118     x264_param_t *param = &h->param;
119
120     /* First we fill all fields */
121     sh->sps = sps;
122     sh->pps = pps;
123
124     sh->i_first_mb  = 0;
125     sh->i_last_mb   = h->mb.i_mb_count - 1;
126     sh->i_pps_id    = pps->i_id;
127
128     sh->i_frame_num = i_frame;
129
130     sh->b_mbaff = PARAM_INTERLACED;
131     sh->b_field_pic = 0;    /* no field support for now */
132     sh->b_bottom_field = 0; /* not yet used */
133
134     sh->i_idr_pic_id = i_idr_pic_id;
135
136     /* poc stuff, fixed later */
137     sh->i_poc = 0;
138     sh->i_delta_poc_bottom = 0;
139     sh->i_delta_poc[0] = 0;
140     sh->i_delta_poc[1] = 0;
141
142     sh->i_redundant_pic_cnt = 0;
143
144     h->mb.b_direct_auto_write = h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO
145                                 && h->param.i_bframe
146                                 && ( h->param.rc.b_stat_write || !h->param.rc.b_stat_read );
147
148     if( !h->mb.b_direct_auto_read && sh->i_type == SLICE_TYPE_B )
149     {
150         if( h->fref[1][0]->i_poc_l0ref0 == h->fref[0][0]->i_poc )
151         {
152             if( h->mb.b_direct_auto_write )
153                 sh->b_direct_spatial_mv_pred = ( h->stat.i_direct_score[1] > h->stat.i_direct_score[0] );
154             else
155                 sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
156         }
157         else
158         {
159             h->mb.b_direct_auto_write = 0;
160             sh->b_direct_spatial_mv_pred = 1;
161         }
162     }
163     /* else b_direct_spatial_mv_pred was read from the 2pass statsfile */
164
165     sh->b_num_ref_idx_override = 0;
166     sh->i_num_ref_idx_l0_active = 1;
167     sh->i_num_ref_idx_l1_active = 1;
168
169     sh->b_ref_pic_list_reordering[0] = h->b_ref_reorder[0];
170     sh->b_ref_pic_list_reordering[1] = h->b_ref_reorder[1];
171
172     /* If the ref list isn't in the default order, construct reordering header */
173     for( int list = 0; list < 2; list++ )
174     {
175         if( sh->b_ref_pic_list_reordering[list] )
176         {
177             int pred_frame_num = i_frame;
178             for( int i = 0; i < h->i_ref[list]; i++ )
179             {
180                 int diff = h->fref[list][i]->i_frame_num - pred_frame_num;
181                 sh->ref_pic_list_order[list][i].idc = ( diff > 0 );
182                 sh->ref_pic_list_order[list][i].arg = (abs(diff) - 1) & ((1 << sps->i_log2_max_frame_num) - 1);
183                 pred_frame_num = h->fref[list][i]->i_frame_num;
184             }
185         }
186     }
187
188     sh->i_cabac_init_idc = param->i_cabac_init_idc;
189
190     sh->i_qp = SPEC_QP(i_qp);
191     sh->i_qp_delta = sh->i_qp - pps->i_pic_init_qp;
192     sh->b_sp_for_swidth = 0;
193     sh->i_qs_delta = 0;
194
195     int deblock_thresh = i_qp + 2 * X264_MIN(param->i_deblocking_filter_alphac0, param->i_deblocking_filter_beta);
196     /* If effective qp <= 15, deblocking would have no effect anyway */
197     if( param->b_deblocking_filter && (h->mb.b_variable_qp || 15 < deblock_thresh ) )
198         sh->i_disable_deblocking_filter_idc = param->b_sliced_threads ? 2 : 0;
199     else
200         sh->i_disable_deblocking_filter_idc = 1;
201     sh->i_alpha_c0_offset = param->i_deblocking_filter_alphac0 << 1;
202     sh->i_beta_offset = param->i_deblocking_filter_beta << 1;
203 }
204
205 static void x264_slice_header_write( bs_t *s, x264_slice_header_t *sh, int i_nal_ref_idc )
206 {
207     if( sh->b_mbaff )
208     {
209         int first_x = sh->i_first_mb % sh->sps->i_mb_width;
210         int first_y = sh->i_first_mb / sh->sps->i_mb_width;
211         assert( (first_y&1) == 0 );
212         bs_write_ue( s, (2*first_x + sh->sps->i_mb_width*(first_y&~1) + (first_y&1)) >> 1 );
213     }
214     else
215         bs_write_ue( s, sh->i_first_mb );
216
217     bs_write_ue( s, sh->i_type + 5 );   /* same type things */
218     bs_write_ue( s, sh->i_pps_id );
219     bs_write( s, sh->sps->i_log2_max_frame_num, sh->i_frame_num & ((1<<sh->sps->i_log2_max_frame_num)-1) );
220
221     if( !sh->sps->b_frame_mbs_only )
222     {
223         bs_write1( s, sh->b_field_pic );
224         if( sh->b_field_pic )
225             bs_write1( s, sh->b_bottom_field );
226     }
227
228     if( sh->i_idr_pic_id >= 0 ) /* NAL IDR */
229         bs_write_ue( s, sh->i_idr_pic_id );
230
231     if( sh->sps->i_poc_type == 0 )
232     {
233         bs_write( s, sh->sps->i_log2_max_poc_lsb, sh->i_poc & ((1<<sh->sps->i_log2_max_poc_lsb)-1) );
234         if( sh->pps->b_pic_order && !sh->b_field_pic )
235             bs_write_se( s, sh->i_delta_poc_bottom );
236     }
237
238     if( sh->pps->b_redundant_pic_cnt )
239         bs_write_ue( s, sh->i_redundant_pic_cnt );
240
241     if( sh->i_type == SLICE_TYPE_B )
242         bs_write1( s, sh->b_direct_spatial_mv_pred );
243
244     if( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_B )
245     {
246         bs_write1( s, sh->b_num_ref_idx_override );
247         if( sh->b_num_ref_idx_override )
248         {
249             bs_write_ue( s, sh->i_num_ref_idx_l0_active - 1 );
250             if( sh->i_type == SLICE_TYPE_B )
251                 bs_write_ue( s, sh->i_num_ref_idx_l1_active - 1 );
252         }
253     }
254
255     /* ref pic list reordering */
256     if( sh->i_type != SLICE_TYPE_I )
257     {
258         bs_write1( s, sh->b_ref_pic_list_reordering[0] );
259         if( sh->b_ref_pic_list_reordering[0] )
260         {
261             for( int i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
262             {
263                 bs_write_ue( s, sh->ref_pic_list_order[0][i].idc );
264                 bs_write_ue( s, sh->ref_pic_list_order[0][i].arg );
265             }
266             bs_write_ue( s, 3 );
267         }
268     }
269     if( sh->i_type == SLICE_TYPE_B )
270     {
271         bs_write1( s, sh->b_ref_pic_list_reordering[1] );
272         if( sh->b_ref_pic_list_reordering[1] )
273         {
274             for( int i = 0; i < sh->i_num_ref_idx_l1_active; i++ )
275             {
276                 bs_write_ue( s, sh->ref_pic_list_order[1][i].idc );
277                 bs_write_ue( s, sh->ref_pic_list_order[1][i].arg );
278             }
279             bs_write_ue( s, 3 );
280         }
281     }
282
283     sh->b_weighted_pred = 0;
284     if( sh->pps->b_weighted_pred && sh->i_type == SLICE_TYPE_P )
285     {
286         sh->b_weighted_pred = sh->weight[0][0].weightfn || sh->weight[0][1].weightfn || sh->weight[0][2].weightfn;
287         /* pred_weight_table() */
288         bs_write_ue( s, sh->weight[0][0].i_denom );
289         bs_write_ue( s, sh->weight[0][1].i_denom );
290         for( int i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
291         {
292             int luma_weight_l0_flag = !!sh->weight[i][0].weightfn;
293             int chroma_weight_l0_flag = !!sh->weight[i][1].weightfn || !!sh->weight[i][2].weightfn;
294             bs_write1( s, luma_weight_l0_flag );
295             if( luma_weight_l0_flag )
296             {
297                 bs_write_se( s, sh->weight[i][0].i_scale );
298                 bs_write_se( s, sh->weight[i][0].i_offset );
299             }
300             bs_write1( s, chroma_weight_l0_flag );
301             if( chroma_weight_l0_flag )
302             {
303                 for( int j = 1; j < 3; j++ )
304                 {
305                     bs_write_se( s, sh->weight[i][j].i_scale );
306                     bs_write_se( s, sh->weight[i][j].i_offset );
307                 }
308             }
309         }
310     }
311     else if( sh->pps->b_weighted_bipred == 1 && sh->i_type == SLICE_TYPE_B )
312     {
313       /* TODO */
314     }
315
316     if( i_nal_ref_idc != 0 )
317     {
318         if( sh->i_idr_pic_id >= 0 )
319         {
320             bs_write1( s, 0 );  /* no output of prior pics flag */
321             bs_write1( s, 0 );  /* long term reference flag */
322         }
323         else
324         {
325             bs_write1( s, sh->i_mmco_command_count > 0 ); /* adaptive_ref_pic_marking_mode_flag */
326             if( sh->i_mmco_command_count > 0 )
327             {
328                 for( int i = 0; i < sh->i_mmco_command_count; i++ )
329                 {
330                     bs_write_ue( s, 1 ); /* mark short term ref as unused */
331                     bs_write_ue( s, sh->mmco[i].i_difference_of_pic_nums - 1 );
332                 }
333                 bs_write_ue( s, 0 ); /* end command list */
334             }
335         }
336     }
337
338     if( sh->pps->b_cabac && sh->i_type != SLICE_TYPE_I )
339         bs_write_ue( s, sh->i_cabac_init_idc );
340
341     bs_write_se( s, sh->i_qp_delta );      /* slice qp delta */
342
343     if( sh->pps->b_deblocking_filter_control )
344     {
345         bs_write_ue( s, sh->i_disable_deblocking_filter_idc );
346         if( sh->i_disable_deblocking_filter_idc != 1 )
347         {
348             bs_write_se( s, sh->i_alpha_c0_offset >> 1 );
349             bs_write_se( s, sh->i_beta_offset >> 1 );
350         }
351     }
352 }
353
354 /* If we are within a reasonable distance of the end of the memory allocated for the bitstream, */
355 /* reallocate, adding an arbitrary amount of space. */
356 static int x264_bitstream_check_buffer( x264_t *h )
357 {
358     uint8_t *bs_bak = h->out.p_bitstream;
359     int max_row_size = (2500 << SLICE_MBAFF) * h->mb.i_mb_width;
360     if( (h->param.b_cabac && (h->cabac.p_end - h->cabac.p < max_row_size)) ||
361         (h->out.bs.p_end - h->out.bs.p < max_row_size) )
362     {
363         h->out.i_bitstream += max_row_size;
364         CHECKED_MALLOC( h->out.p_bitstream, h->out.i_bitstream );
365         h->mc.memcpy_aligned( h->out.p_bitstream, bs_bak, (h->out.i_bitstream - max_row_size) & ~15 );
366         intptr_t delta = h->out.p_bitstream - bs_bak;
367
368         h->out.bs.p_start += delta;
369         h->out.bs.p += delta;
370         h->out.bs.p_end = h->out.p_bitstream + h->out.i_bitstream;
371
372         h->cabac.p_start += delta;
373         h->cabac.p += delta;
374         h->cabac.p_end = h->out.p_bitstream + h->out.i_bitstream;
375
376         for( int i = 0; i <= h->out.i_nal; i++ )
377             h->out.nal[i].p_payload += delta;
378         x264_free( bs_bak );
379     }
380     return 0;
381 fail:
382     x264_free( bs_bak );
383     return -1;
384 }
385
386 #if HAVE_THREAD
387 static void x264_encoder_thread_init( x264_t *h )
388 {
389     if( h->param.i_sync_lookahead )
390         x264_lower_thread_priority( 10 );
391
392 #if HAVE_MMX
393     /* Misalign mask has to be set separately for each thread. */
394     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
395         x264_cpu_mask_misalign_sse();
396 #endif
397 }
398
399 static void x264_lookahead_thread_init( x264_t *h )
400 {
401 #if HAVE_MMX
402     /* Misalign mask has to be set separately for each thread. */
403     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
404         x264_cpu_mask_misalign_sse();
405 #endif
406 }
407 #endif
408
409 /****************************************************************************
410  *
411  ****************************************************************************
412  ****************************** External API*********************************
413  ****************************************************************************
414  *
415  ****************************************************************************/
416
417 static int x264_validate_parameters( x264_t *h, int b_open )
418 {
419 #if HAVE_MMX
420 #ifdef __SSE__
421     if( b_open && !(x264_cpu_detect() & X264_CPU_SSE) )
422     {
423         x264_log( h, X264_LOG_ERROR, "your cpu does not support SSE1, but x264 was compiled with asm support\n");
424 #else
425     if( b_open && !(x264_cpu_detect() & X264_CPU_MMX2) )
426     {
427         x264_log( h, X264_LOG_ERROR, "your cpu does not support MMXEXT, but x264 was compiled with asm support\n");
428 #endif
429         x264_log( h, X264_LOG_ERROR, "to run x264, recompile without asm support (configure --disable-asm)\n");
430         return -1;
431     }
432 #endif
433
434 #if HAVE_INTERLACED
435     h->param.b_interlaced = !!PARAM_INTERLACED;
436 #else
437     if( h->param.b_interlaced )
438     {
439         x264_log( h, X264_LOG_ERROR, "not compiled with interlaced support\n" );
440         return -1;
441     }
442 #endif
443
444     if( h->param.i_width <= 0 || h->param.i_height <= 0 )
445     {
446         x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
447                   h->param.i_width, h->param.i_height );
448         return -1;
449     }
450
451     int i_csp = h->param.i_csp & X264_CSP_MASK;
452 #if X264_CHROMA_FORMAT
453     if( CHROMA_FORMAT != CHROMA_420 && i_csp >= X264_CSP_I420 && i_csp <= X264_CSP_NV12 )
454     {
455         x264_log( h, X264_LOG_ERROR, "not compiled with 4:2:0 support\n" );
456         return -1;
457     }
458     else if( CHROMA_FORMAT != CHROMA_422 && i_csp >= X264_CSP_I422 && i_csp <= X264_CSP_NV16 )
459     {
460         x264_log( h, X264_LOG_ERROR, "not compiled with 4:2:2 support\n" );
461         return -1;
462     }
463     else if( CHROMA_FORMAT != CHROMA_444 && i_csp >= X264_CSP_I444 && i_csp <= X264_CSP_RGB )
464     {
465         x264_log( h, X264_LOG_ERROR, "not compiled with 4:4:4 support\n" );
466         return -1;
467     }
468 #endif
469     if( i_csp <= X264_CSP_NONE || i_csp >= X264_CSP_MAX )
470     {
471         x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420/YV12/NV12/I422/YV16/NV16/I444/YV24/BGR/BGRA/RGB supported)\n" );
472         return -1;
473     }
474
475     if( i_csp < X264_CSP_I444 && h->param.i_width % 2 )
476     {
477         x264_log( h, X264_LOG_ERROR, "width not divisible by 2 (%dx%d)\n",
478                   h->param.i_width, h->param.i_height );
479         return -1;
480     }
481
482     if( i_csp < X264_CSP_I422 && PARAM_INTERLACED && h->param.i_height % 4 )
483     {
484         x264_log( h, X264_LOG_ERROR, "height not divisible by 4 (%dx%d)\n",
485                   h->param.i_width, h->param.i_height );
486         return -1;
487     }
488
489     if( (i_csp < X264_CSP_I422 || PARAM_INTERLACED) && h->param.i_height % 2 )
490     {
491         x264_log( h, X264_LOG_ERROR, "height not divisible by 2 (%dx%d)\n",
492                   h->param.i_width, h->param.i_height );
493         return -1;
494     }
495
496     if( (h->param.crop_rect.i_left + h->param.crop_rect.i_right ) >= h->param.i_width ||
497         (h->param.crop_rect.i_top  + h->param.crop_rect.i_bottom) >= h->param.i_height )
498     {
499         x264_log( h, X264_LOG_ERROR, "invalid crop-rect %u,%u,%u,%u\n", h->param.crop_rect.i_left,
500                   h->param.crop_rect.i_top, h->param.crop_rect.i_right,  h->param.crop_rect.i_bottom );
501         return -1;
502     }
503
504     if( h->param.i_threads == X264_THREADS_AUTO )
505         h->param.i_threads = x264_cpu_num_processors() * (h->param.b_sliced_threads?2:3)/2;
506     if( h->param.i_lookahead_threads == X264_THREADS_AUTO )
507         h->param.i_lookahead_threads = h->param.i_threads / (h->param.b_sliced_threads?1:6);
508     int max_sliced_threads = X264_MAX( 1, (h->param.i_height+15)/16 / 4 );
509     if( h->param.i_threads > 1 )
510     {
511 #if !HAVE_THREAD
512         x264_log( h, X264_LOG_WARNING, "not compiled with thread support!\n");
513         h->param.i_threads = 1;
514 #endif
515         /* Avoid absurdly small thread slices as they can reduce performance
516          * and VBV compliance.  Capped at an arbitrary 4 rows per thread. */
517         if( h->param.b_sliced_threads )
518             h->param.i_threads = X264_MIN( h->param.i_threads, max_sliced_threads );
519     }
520     h->param.i_threads = x264_clip3( h->param.i_threads, 1, X264_THREAD_MAX );
521     h->param.i_lookahead_threads = x264_clip3( h->param.i_lookahead_threads, 1, X264_MIN( max_sliced_threads, X264_LOOKAHEAD_THREAD_MAX ) );
522     if( h->param.i_threads == 1 )
523     {
524         h->param.b_sliced_threads = 0;
525         h->param.i_lookahead_threads = 1;
526     }
527     h->i_thread_frames = h->param.b_sliced_threads ? 1 : h->param.i_threads;
528     if( h->i_thread_frames > 1 )
529         h->param.nalu_process = NULL;
530
531     h->param.i_keyint_max = x264_clip3( h->param.i_keyint_max, 1, X264_KEYINT_MAX_INFINITE );
532     if( h->param.i_keyint_max == 1 )
533     {
534         h->param.b_intra_refresh = 0;
535         h->param.analyse.i_weighted_pred = 0;
536     }
537
538     h->param.i_frame_packing = x264_clip3( h->param.i_frame_packing, -1, 5 );
539
540     /* Detect default ffmpeg settings and terminate with an error. */
541     if( b_open )
542     {
543         int score = 0;
544         score += h->param.analyse.i_me_range == 0;
545         score += h->param.rc.i_qp_step == 3;
546         score += h->param.i_keyint_max == 12;
547         score += h->param.rc.i_qp_min == 2;
548         score += h->param.rc.i_qp_max == 31;
549         score += h->param.rc.f_qcompress == 0.5;
550         score += fabs(h->param.rc.f_ip_factor - 1.25) < 0.01;
551         score += fabs(h->param.rc.f_pb_factor - 1.25) < 0.01;
552         score += h->param.analyse.inter == 0 && h->param.analyse.i_subpel_refine == 8;
553         if( score >= 5 )
554         {
555             x264_log( h, X264_LOG_ERROR, "broken ffmpeg default settings detected\n" );
556             x264_log( h, X264_LOG_ERROR, "use an encoding preset (e.g. -vpre medium)\n" );
557             x264_log( h, X264_LOG_ERROR, "preset usage: -vpre <speed> -vpre <profile>\n" );
558             x264_log( h, X264_LOG_ERROR, "speed presets are listed in x264 --help\n" );
559             x264_log( h, X264_LOG_ERROR, "profile is optional; x264 defaults to high\n" );
560             return -1;
561         }
562     }
563
564     if( h->param.rc.i_rc_method < 0 || h->param.rc.i_rc_method > 2 )
565     {
566         x264_log( h, X264_LOG_ERROR, "no ratecontrol method specified\n" );
567         return -1;
568     }
569     h->param.rc.f_rf_constant = x264_clip3f( h->param.rc.f_rf_constant, -QP_BD_OFFSET, 51 );
570     h->param.rc.f_rf_constant_max = x264_clip3f( h->param.rc.f_rf_constant_max, -QP_BD_OFFSET, 51 );
571     h->param.rc.i_qp_constant = x264_clip3( h->param.rc.i_qp_constant, 0, QP_MAX );
572     h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 0, 11 );
573     h->param.rc.f_ip_factor = X264_MAX( h->param.rc.f_ip_factor, 0.01f );
574     h->param.rc.f_pb_factor = X264_MAX( h->param.rc.f_pb_factor, 0.01f );
575     if( h->param.rc.i_rc_method == X264_RC_CRF )
576     {
577         h->param.rc.i_qp_constant = h->param.rc.f_rf_constant + QP_BD_OFFSET;
578         h->param.rc.i_bitrate = 0;
579     }
580     if( b_open && (h->param.rc.i_rc_method == X264_RC_CQP || h->param.rc.i_rc_method == X264_RC_CRF)
581         && h->param.rc.i_qp_constant == 0 )
582     {
583         h->mb.b_lossless = 1;
584         h->param.i_cqm_preset = X264_CQM_FLAT;
585         h->param.psz_cqm_file = NULL;
586         h->param.rc.i_rc_method = X264_RC_CQP;
587         h->param.rc.f_ip_factor = 1;
588         h->param.rc.f_pb_factor = 1;
589         h->param.analyse.b_psnr = 0;
590         h->param.analyse.b_ssim = 0;
591         h->param.analyse.i_chroma_qp_offset = 0;
592         h->param.analyse.i_trellis = 0;
593         h->param.analyse.b_fast_pskip = 0;
594         h->param.analyse.i_noise_reduction = 0;
595         h->param.analyse.b_psy = 0;
596         h->param.i_bframe = 0;
597         /* 8x8dct is not useful without RD in CAVLC lossless */
598         if( !h->param.b_cabac && h->param.analyse.i_subpel_refine < 6 )
599             h->param.analyse.b_transform_8x8 = 0;
600     }
601     if( h->param.rc.i_rc_method == X264_RC_CQP )
602     {
603         float qp_p = h->param.rc.i_qp_constant;
604         float qp_i = qp_p - 6*log2f( h->param.rc.f_ip_factor );
605         float qp_b = qp_p + 6*log2f( h->param.rc.f_pb_factor );
606         h->param.rc.i_qp_min = x264_clip3( (int)(X264_MIN3( qp_p, qp_i, qp_b )), 0, QP_MAX );
607         h->param.rc.i_qp_max = x264_clip3( (int)(X264_MAX3( qp_p, qp_i, qp_b ) + .999), 0, QP_MAX );
608         h->param.rc.i_aq_mode = 0;
609         h->param.rc.b_mb_tree = 0;
610         h->param.rc.i_bitrate = 0;
611     }
612     h->param.rc.i_qp_max = x264_clip3( h->param.rc.i_qp_max, 0, QP_MAX );
613     h->param.rc.i_qp_min = x264_clip3( h->param.rc.i_qp_min, 0, h->param.rc.i_qp_max );
614     h->param.rc.i_qp_step = x264_clip3( h->param.rc.i_qp_step, 2, QP_MAX );
615     h->param.rc.i_bitrate = x264_clip3( h->param.rc.i_bitrate, 0, 2000000 );
616     if( h->param.rc.i_rc_method == X264_RC_ABR && !h->param.rc.i_bitrate )
617     {
618         x264_log( h, X264_LOG_ERROR, "bitrate not specified\n" );
619         return -1;
620     }
621     h->param.rc.i_vbv_buffer_size = x264_clip3( h->param.rc.i_vbv_buffer_size, 0, 2000000 );
622     h->param.rc.i_vbv_max_bitrate = x264_clip3( h->param.rc.i_vbv_max_bitrate, 0, 2000000 );
623     h->param.rc.f_vbv_buffer_init = x264_clip3f( h->param.rc.f_vbv_buffer_init, 0, 2000000 );
624     if( h->param.rc.i_vbv_buffer_size )
625     {
626         if( h->param.rc.i_rc_method == X264_RC_CQP )
627         {
628             x264_log( h, X264_LOG_WARNING, "VBV is incompatible with constant QP, ignored.\n" );
629             h->param.rc.i_vbv_max_bitrate = 0;
630             h->param.rc.i_vbv_buffer_size = 0;
631         }
632         else if( h->param.rc.i_vbv_max_bitrate == 0 )
633         {
634             if( h->param.rc.i_rc_method == X264_RC_ABR )
635             {
636                 x264_log( h, X264_LOG_WARNING, "VBV maxrate unspecified, assuming CBR\n" );
637                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
638             }
639             else
640             {
641                 x264_log( h, X264_LOG_WARNING, "VBV bufsize set but maxrate unspecified, ignored\n" );
642                 h->param.rc.i_vbv_buffer_size = 0;
643             }
644         }
645         else if( h->param.rc.i_vbv_max_bitrate < h->param.rc.i_bitrate &&
646                  h->param.rc.i_rc_method == X264_RC_ABR )
647         {
648             x264_log( h, X264_LOG_WARNING, "max bitrate less than average bitrate, assuming CBR\n" );
649             h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
650         }
651     }
652     else if( h->param.rc.i_vbv_max_bitrate )
653     {
654         x264_log( h, X264_LOG_WARNING, "VBV maxrate specified, but no bufsize, ignored\n" );
655         h->param.rc.i_vbv_max_bitrate = 0;
656     }
657
658     h->param.i_slice_max_size = X264_MAX( h->param.i_slice_max_size, 0 );
659     h->param.i_slice_max_mbs = X264_MAX( h->param.i_slice_max_mbs, 0 );
660
661     int max_slices = (h->param.i_height+((16<<PARAM_INTERLACED)-1))/(16<<PARAM_INTERLACED);
662     if( h->param.b_sliced_threads )
663         h->param.i_slice_count = x264_clip3( h->param.i_threads, 0, max_slices );
664     else
665     {
666         h->param.i_slice_count = x264_clip3( h->param.i_slice_count, 0, max_slices );
667         if( h->param.i_slice_max_mbs || h->param.i_slice_max_size )
668             h->param.i_slice_count = 0;
669     }
670
671     if( h->param.b_bluray_compat )
672     {
673         h->param.i_bframe_pyramid = X264_MIN( X264_B_PYRAMID_STRICT, h->param.i_bframe_pyramid );
674         h->param.i_bframe = X264_MIN( h->param.i_bframe, 3 );
675         h->param.b_aud = 1;
676         h->param.i_nal_hrd = X264_MAX( h->param.i_nal_hrd, X264_NAL_HRD_VBR );
677         h->param.i_slice_max_size = 0;
678         h->param.i_slice_max_mbs = 0;
679         h->param.b_intra_refresh = 0;
680         h->param.i_frame_reference = X264_MIN( h->param.i_frame_reference, 6 );
681         h->param.i_dpb_size = X264_MIN( h->param.i_dpb_size, 6 );
682         /* Don't use I-frames, because Blu-ray treats them the same as IDR. */
683         h->param.i_keyint_min = 1;
684         /* Due to the proliferation of broken players that don't handle dupes properly. */
685         h->param.analyse.i_weighted_pred = X264_MIN( h->param.analyse.i_weighted_pred, X264_WEIGHTP_SIMPLE );
686         if( h->param.b_fake_interlaced )
687             h->param.b_pic_struct = 1;
688     }
689
690     h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, X264_REF_MAX );
691     h->param.i_dpb_size = x264_clip3( h->param.i_dpb_size, 1, X264_REF_MAX );
692     if( h->param.i_scenecut_threshold < 0 )
693         h->param.i_scenecut_threshold = 0;
694     h->param.analyse.i_direct_mv_pred = x264_clip3( h->param.analyse.i_direct_mv_pred, X264_DIRECT_PRED_NONE, X264_DIRECT_PRED_AUTO );
695     if( !h->param.analyse.i_subpel_refine && h->param.analyse.i_direct_mv_pred > X264_DIRECT_PRED_SPATIAL )
696     {
697         x264_log( h, X264_LOG_WARNING, "subme=0 + direct=temporal is not supported\n" );
698         h->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
699     }
700     h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_MIN( X264_BFRAME_MAX, h->param.i_keyint_max-1 ) );
701     h->param.i_bframe_bias = x264_clip3( h->param.i_bframe_bias, -90, 100 );
702     if( h->param.i_bframe <= 1 )
703         h->param.i_bframe_pyramid = X264_B_PYRAMID_NONE;
704     h->param.i_bframe_pyramid = x264_clip3( h->param.i_bframe_pyramid, X264_B_PYRAMID_NONE, X264_B_PYRAMID_NORMAL );
705     h->param.i_bframe_adaptive = x264_clip3( h->param.i_bframe_adaptive, X264_B_ADAPT_NONE, X264_B_ADAPT_TRELLIS );
706     if( !h->param.i_bframe )
707     {
708         h->param.i_bframe_adaptive = X264_B_ADAPT_NONE;
709         h->param.analyse.i_direct_mv_pred = 0;
710         h->param.analyse.b_weighted_bipred = 0;
711         h->param.b_open_gop = 0;
712     }
713     if( h->param.b_intra_refresh && h->param.i_bframe_pyramid == X264_B_PYRAMID_NORMAL )
714     {
715         x264_log( h, X264_LOG_WARNING, "b-pyramid normal + intra-refresh is not supported\n" );
716         h->param.i_bframe_pyramid = X264_B_PYRAMID_STRICT;
717     }
718     if( h->param.b_intra_refresh && (h->param.i_frame_reference > 1 || h->param.i_dpb_size > 1) )
719     {
720         x264_log( h, X264_LOG_WARNING, "ref > 1 + intra-refresh is not supported\n" );
721         h->param.i_frame_reference = 1;
722         h->param.i_dpb_size = 1;
723     }
724     if( h->param.b_intra_refresh && h->param.b_open_gop )
725     {
726         x264_log( h, X264_LOG_WARNING, "intra-refresh is not compatible with open-gop\n" );
727         h->param.b_open_gop = 0;
728     }
729     if( !h->param.i_fps_num || !h->param.i_fps_den )
730     {
731         h->param.i_fps_num = 25;
732         h->param.i_fps_den = 1;
733     }
734     float fps = (float) h->param.i_fps_num / h->param.i_fps_den;
735     if( h->param.i_keyint_min == X264_KEYINT_MIN_AUTO )
736         h->param.i_keyint_min = X264_MIN( h->param.i_keyint_max / 10, fps );
737     h->param.i_keyint_min = x264_clip3( h->param.i_keyint_min, 1, h->param.i_keyint_max/2+1 );
738     h->param.rc.i_lookahead = x264_clip3( h->param.rc.i_lookahead, 0, X264_LOOKAHEAD_MAX );
739     {
740         int maxrate = X264_MAX( h->param.rc.i_vbv_max_bitrate, h->param.rc.i_bitrate );
741         float bufsize = maxrate ? (float)h->param.rc.i_vbv_buffer_size / maxrate : 0;
742         h->param.rc.i_lookahead = X264_MIN( h->param.rc.i_lookahead, X264_MAX( h->param.i_keyint_max, bufsize*fps ) );
743     }
744
745     if( !h->param.i_timebase_num || !h->param.i_timebase_den || !(h->param.b_vfr_input || h->param.b_pulldown) )
746     {
747         h->param.i_timebase_num = h->param.i_fps_den;
748         h->param.i_timebase_den = h->param.i_fps_num;
749     }
750
751     h->param.rc.f_qcompress = x264_clip3f( h->param.rc.f_qcompress, 0.0, 1.0 );
752     if( h->param.i_keyint_max == 1 || h->param.rc.f_qcompress == 1 )
753         h->param.rc.b_mb_tree = 0;
754     if( (!h->param.b_intra_refresh && h->param.i_keyint_max != X264_KEYINT_MAX_INFINITE) &&
755         !h->param.rc.i_lookahead && h->param.rc.b_mb_tree )
756     {
757         x264_log( h, X264_LOG_WARNING, "lookaheadless mb-tree requires intra refresh or infinite keyint\n" );
758         h->param.rc.b_mb_tree = 0;
759     }
760     if( b_open && h->param.rc.b_stat_read )
761         h->param.rc.i_lookahead = 0;
762 #if HAVE_THREAD
763     if( h->param.i_sync_lookahead < 0 )
764         h->param.i_sync_lookahead = h->param.i_bframe + 1;
765     h->param.i_sync_lookahead = X264_MIN( h->param.i_sync_lookahead, X264_LOOKAHEAD_MAX );
766     if( h->param.rc.b_stat_read || h->i_thread_frames == 1 )
767         h->param.i_sync_lookahead = 0;
768 #else
769     h->param.i_sync_lookahead = 0;
770 #endif
771
772     h->param.i_deblocking_filter_alphac0 = x264_clip3( h->param.i_deblocking_filter_alphac0, -6, 6 );
773     h->param.i_deblocking_filter_beta    = x264_clip3( h->param.i_deblocking_filter_beta, -6, 6 );
774     h->param.analyse.i_luma_deadzone[0] = x264_clip3( h->param.analyse.i_luma_deadzone[0], 0, 32 );
775     h->param.analyse.i_luma_deadzone[1] = x264_clip3( h->param.analyse.i_luma_deadzone[1], 0, 32 );
776
777     h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, 0, 2 );
778
779     if( h->param.i_cqm_preset < X264_CQM_FLAT || h->param.i_cqm_preset > X264_CQM_CUSTOM )
780         h->param.i_cqm_preset = X264_CQM_FLAT;
781
782     if( h->param.analyse.i_me_method < X264_ME_DIA ||
783         h->param.analyse.i_me_method > X264_ME_TESA )
784         h->param.analyse.i_me_method = X264_ME_HEX;
785     h->param.analyse.i_me_range = x264_clip3( h->param.analyse.i_me_range, 4, 1024 );
786     if( h->param.analyse.i_me_range > 16 && h->param.analyse.i_me_method <= X264_ME_HEX )
787         h->param.analyse.i_me_range = 16;
788     if( h->param.analyse.i_me_method == X264_ME_TESA &&
789         (h->mb.b_lossless || h->param.analyse.i_subpel_refine <= 1) )
790         h->param.analyse.i_me_method = X264_ME_ESA;
791     h->param.analyse.b_mixed_references = h->param.analyse.b_mixed_references && h->param.i_frame_reference > 1;
792     h->param.analyse.inter &= X264_ANALYSE_PSUB16x16|X264_ANALYSE_PSUB8x8|X264_ANALYSE_BSUB16x16|
793                               X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
794     h->param.analyse.intra &= X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
795     if( !(h->param.analyse.inter & X264_ANALYSE_PSUB16x16) )
796         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
797     if( !h->param.analyse.b_transform_8x8 )
798     {
799         h->param.analyse.inter &= ~X264_ANALYSE_I8x8;
800         h->param.analyse.intra &= ~X264_ANALYSE_I8x8;
801     }
802     h->param.analyse.i_trellis = x264_clip3( h->param.analyse.i_trellis, 0, 2 );
803     h->param.rc.i_aq_mode = x264_clip3( h->param.rc.i_aq_mode, 0, 2 );
804     h->param.rc.f_aq_strength = x264_clip3f( h->param.rc.f_aq_strength, 0, 3 );
805     if( h->param.rc.f_aq_strength == 0 )
806         h->param.rc.i_aq_mode = 0;
807
808     if( h->param.i_log_level < X264_LOG_INFO )
809     {
810         h->param.analyse.b_psnr = 0;
811         h->param.analyse.b_ssim = 0;
812     }
813     /* Warn users trying to measure PSNR/SSIM with psy opts on. */
814     if( b_open && (h->param.analyse.b_psnr || h->param.analyse.b_ssim) )
815     {
816         char *s = NULL;
817
818         if( h->param.analyse.b_psy )
819         {
820             s = h->param.analyse.b_psnr ? "psnr" : "ssim";
821             x264_log( h, X264_LOG_WARNING, "--%s used with psy on: results will be invalid!\n", s );
822         }
823         else if( !h->param.rc.i_aq_mode && h->param.analyse.b_ssim )
824         {
825             x264_log( h, X264_LOG_WARNING, "--ssim used with AQ off: results will be invalid!\n" );
826             s = "ssim";
827         }
828         else if(  h->param.rc.i_aq_mode && h->param.analyse.b_psnr )
829         {
830             x264_log( h, X264_LOG_WARNING, "--psnr used with AQ on: results will be invalid!\n" );
831             s = "psnr";
832         }
833         if( s )
834             x264_log( h, X264_LOG_WARNING, "--tune %s should be used if attempting to benchmark %s!\n", s, s );
835     }
836
837     if( !h->param.analyse.b_psy )
838     {
839         h->param.analyse.f_psy_rd = 0;
840         h->param.analyse.f_psy_trellis = 0;
841     }
842     h->param.analyse.f_psy_rd = x264_clip3f( h->param.analyse.f_psy_rd, 0, 10 );
843     h->param.analyse.f_psy_trellis = x264_clip3f( h->param.analyse.f_psy_trellis, 0, 10 );
844     h->mb.i_psy_rd = h->param.analyse.i_subpel_refine >= 6 ? FIX8( h->param.analyse.f_psy_rd ) : 0;
845     h->mb.i_psy_trellis = h->param.analyse.i_trellis ? FIX8( h->param.analyse.f_psy_trellis / 4 ) : 0;
846     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -32, 32);
847     /* In 4:4:4 mode, chroma gets twice as much resolution, so we can halve its quality. */
848     if( b_open && i_csp >= X264_CSP_I444 && i_csp < X264_CSP_BGR && h->param.analyse.b_psy )
849         h->param.analyse.i_chroma_qp_offset += 6;
850     /* Psy RDO increases overall quantizers to improve the quality of luma--this indirectly hurts chroma quality */
851     /* so we lower the chroma QP offset to compensate */
852     if( b_open && h->mb.i_psy_rd )
853         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_rd < 0.25 ? 1 : 2;
854     /* Psy trellis has a similar effect. */
855     if( b_open && h->mb.i_psy_trellis )
856         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_trellis < 0.25 ? 1 : 2;
857     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
858     /* MB-tree requires AQ to be on, even if the strength is zero. */
859     if( !h->param.rc.i_aq_mode && h->param.rc.b_mb_tree )
860     {
861         h->param.rc.i_aq_mode = 1;
862         h->param.rc.f_aq_strength = 0;
863     }
864     h->param.analyse.i_noise_reduction = x264_clip3( h->param.analyse.i_noise_reduction, 0, 1<<16 );
865     if( h->param.analyse.i_subpel_refine >= 10 && (h->param.analyse.i_trellis != 2 || !h->param.rc.i_aq_mode) )
866         h->param.analyse.i_subpel_refine = 9;
867
868     {
869         const x264_level_t *l = x264_levels;
870         if( h->param.i_level_idc < 0 )
871         {
872             int maxrate_bak = h->param.rc.i_vbv_max_bitrate;
873             if( h->param.rc.i_rc_method == X264_RC_ABR && h->param.rc.i_vbv_buffer_size <= 0 )
874                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate * 2;
875             x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
876             do h->param.i_level_idc = l->level_idc;
877                 while( l[1].level_idc && x264_validate_levels( h, 0 ) && l++ );
878             h->param.rc.i_vbv_max_bitrate = maxrate_bak;
879         }
880         else
881         {
882             while( l->level_idc && l->level_idc != h->param.i_level_idc )
883                 l++;
884             if( l->level_idc == 0 )
885             {
886                 x264_log( h, X264_LOG_ERROR, "invalid level_idc: %d\n", h->param.i_level_idc );
887                 return -1;
888             }
889         }
890         if( h->param.analyse.i_mv_range <= 0 )
891             h->param.analyse.i_mv_range = l->mv_range >> PARAM_INTERLACED;
892         else
893             h->param.analyse.i_mv_range = x264_clip3(h->param.analyse.i_mv_range, 32, 512 >> PARAM_INTERLACED);
894     }
895
896     h->param.analyse.i_weighted_pred = x264_clip3( h->param.analyse.i_weighted_pred, X264_WEIGHTP_NONE, X264_WEIGHTP_SMART );
897
898     if( PARAM_INTERLACED )
899     {
900         if( h->param.analyse.i_me_method >= X264_ME_ESA )
901         {
902             x264_log( h, X264_LOG_WARNING, "interlace + me=esa is not implemented\n" );
903             h->param.analyse.i_me_method = X264_ME_UMH;
904         }
905         if( h->param.analyse.i_weighted_pred > 0 )
906         {
907             x264_log( h, X264_LOG_WARNING, "interlace + weightp is not implemented\n" );
908             h->param.analyse.i_weighted_pred = X264_WEIGHTP_NONE;
909         }
910     }
911
912     if( !h->param.analyse.i_weighted_pred && h->param.rc.b_mb_tree && h->param.analyse.b_psy )
913         h->param.analyse.i_weighted_pred = X264_WEIGHTP_FAKE;
914
915     if( h->i_thread_frames > 1 )
916     {
917         int r = h->param.analyse.i_mv_range_thread;
918         int r2;
919         if( r <= 0 )
920         {
921             // half of the available space is reserved and divided evenly among the threads,
922             // the rest is allocated to whichever thread is far enough ahead to use it.
923             // reserving more space increases quality for some videos, but costs more time
924             // in thread synchronization.
925             int max_range = (h->param.i_height + X264_THREAD_HEIGHT) / h->i_thread_frames - X264_THREAD_HEIGHT;
926             r = max_range / 2;
927         }
928         r = X264_MAX( r, h->param.analyse.i_me_range );
929         r = X264_MIN( r, h->param.analyse.i_mv_range );
930         // round up to use the whole mb row
931         r2 = (r & ~15) + ((-X264_THREAD_HEIGHT) & 15);
932         if( r2 < r )
933             r2 += 16;
934         x264_log( h, X264_LOG_DEBUG, "using mv_range_thread = %d\n", r2 );
935         h->param.analyse.i_mv_range_thread = r2;
936     }
937
938     if( h->param.rc.f_rate_tolerance < 0 )
939         h->param.rc.f_rate_tolerance = 0;
940     if( h->param.rc.f_qblur < 0 )
941         h->param.rc.f_qblur = 0;
942     if( h->param.rc.f_complexity_blur < 0 )
943         h->param.rc.f_complexity_blur = 0;
944
945     h->param.i_sps_id &= 31;
946
947     if( PARAM_INTERLACED )
948         h->param.b_pic_struct = 1;
949
950     h->param.i_nal_hrd = x264_clip3( h->param.i_nal_hrd, X264_NAL_HRD_NONE, X264_NAL_HRD_CBR );
951
952     if( h->param.i_nal_hrd && !h->param.rc.i_vbv_buffer_size )
953     {
954         x264_log( h, X264_LOG_WARNING, "NAL HRD parameters require VBV parameters\n" );
955         h->param.i_nal_hrd = X264_NAL_HRD_NONE;
956     }
957
958     if( h->param.i_nal_hrd == X264_NAL_HRD_CBR &&
959        (h->param.rc.i_bitrate != h->param.rc.i_vbv_max_bitrate || !h->param.rc.i_vbv_max_bitrate) )
960     {
961         x264_log( h, X264_LOG_WARNING, "CBR HRD requires constant bitrate\n" );
962         h->param.i_nal_hrd = X264_NAL_HRD_VBR;
963     }
964
965     /* ensure the booleans are 0 or 1 so they can be used in math */
966 #define BOOLIFY(x) h->param.x = !!h->param.x
967     BOOLIFY( b_cabac );
968     BOOLIFY( b_constrained_intra );
969     BOOLIFY( b_deblocking_filter );
970     BOOLIFY( b_deterministic );
971     BOOLIFY( b_sliced_threads );
972     BOOLIFY( b_interlaced );
973     BOOLIFY( b_intra_refresh );
974     BOOLIFY( b_visualize );
975     BOOLIFY( b_aud );
976     BOOLIFY( b_repeat_headers );
977     BOOLIFY( b_annexb );
978     BOOLIFY( b_vfr_input );
979     BOOLIFY( b_pulldown );
980     BOOLIFY( b_tff );
981     BOOLIFY( b_pic_struct );
982     BOOLIFY( b_fake_interlaced );
983     BOOLIFY( b_open_gop );
984     BOOLIFY( b_bluray_compat );
985     BOOLIFY( b_full_recon );
986     BOOLIFY( analyse.b_transform_8x8 );
987     BOOLIFY( analyse.b_weighted_bipred );
988     BOOLIFY( analyse.b_chroma_me );
989     BOOLIFY( analyse.b_mixed_references );
990     BOOLIFY( analyse.b_fast_pskip );
991     BOOLIFY( analyse.b_dct_decimate );
992     BOOLIFY( analyse.b_psy );
993     BOOLIFY( analyse.b_psnr );
994     BOOLIFY( analyse.b_ssim );
995     BOOLIFY( rc.b_stat_write );
996     BOOLIFY( rc.b_stat_read );
997     BOOLIFY( rc.b_mb_tree );
998 #undef BOOLIFY
999
1000     return 0;
1001 }
1002
1003 static void mbcmp_init( x264_t *h )
1004 {
1005     int satd = !h->mb.b_lossless && h->param.analyse.i_subpel_refine > 1;
1006     memcpy( h->pixf.mbcmp, satd ? h->pixf.satd : h->pixf.sad_aligned, sizeof(h->pixf.mbcmp) );
1007     memcpy( h->pixf.mbcmp_unaligned, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.mbcmp_unaligned) );
1008     h->pixf.intra_mbcmp_x3_16x16 = satd ? h->pixf.intra_satd_x3_16x16 : h->pixf.intra_sad_x3_16x16;
1009     h->pixf.intra_mbcmp_x3_8x16c = satd ? h->pixf.intra_satd_x3_8x16c : h->pixf.intra_sad_x3_8x16c;
1010     h->pixf.intra_mbcmp_x3_8x8c  = satd ? h->pixf.intra_satd_x3_8x8c  : h->pixf.intra_sad_x3_8x8c;
1011     h->pixf.intra_mbcmp_x3_8x8 = satd ? h->pixf.intra_sa8d_x3_8x8 : h->pixf.intra_sad_x3_8x8;
1012     h->pixf.intra_mbcmp_x3_4x4 = satd ? h->pixf.intra_satd_x3_4x4 : h->pixf.intra_sad_x3_4x4;
1013     h->pixf.intra_mbcmp_x9_4x4 = h->param.b_cpu_independent || h->mb.b_lossless ? NULL
1014                                : satd ? h->pixf.intra_satd_x9_4x4 : h->pixf.intra_sad_x9_4x4;
1015     h->pixf.intra_mbcmp_x9_8x8 = h->param.b_cpu_independent || h->mb.b_lossless ? NULL
1016                                : satd ? h->pixf.intra_sa8d_x9_8x8 : h->pixf.intra_sad_x9_8x8;
1017     satd &= h->param.analyse.i_me_method == X264_ME_TESA;
1018     memcpy( h->pixf.fpelcmp, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.fpelcmp) );
1019     memcpy( h->pixf.fpelcmp_x3, satd ? h->pixf.satd_x3 : h->pixf.sad_x3, sizeof(h->pixf.fpelcmp_x3) );
1020     memcpy( h->pixf.fpelcmp_x4, satd ? h->pixf.satd_x4 : h->pixf.sad_x4, sizeof(h->pixf.fpelcmp_x4) );
1021 }
1022
1023 static void chroma_dsp_init( x264_t *h )
1024 {
1025     memcpy( h->luma2chroma_pixel, x264_luma2chroma_pixel[CHROMA_FORMAT], sizeof(h->luma2chroma_pixel) );
1026
1027     switch( CHROMA_FORMAT )
1028     {
1029         case CHROMA_420:
1030             memcpy( h->predict_chroma, h->predict_8x8c, sizeof(h->predict_chroma) );
1031             h->mc.prefetch_fenc = h->mc.prefetch_fenc_420;
1032             h->loopf.deblock_chroma[0] = h->loopf.deblock_h_chroma_420;
1033             h->loopf.deblock_chroma_intra[0] = h->loopf.deblock_h_chroma_420_intra;
1034             h->loopf.deblock_chroma_mbaff = h->loopf.deblock_chroma_420_mbaff;
1035             h->loopf.deblock_chroma_intra_mbaff = h->loopf.deblock_chroma_420_intra_mbaff;
1036             h->pixf.intra_mbcmp_x3_chroma = h->pixf.intra_mbcmp_x3_8x8c;
1037             h->quantf.coeff_last[DCT_CHROMA_DC] = h->quantf.coeff_last4;
1038             h->quantf.coeff_level_run[DCT_CHROMA_DC] = h->quantf.coeff_level_run4;
1039             break;
1040         case CHROMA_422:
1041             memcpy( h->predict_chroma, h->predict_8x16c, sizeof(h->predict_chroma) );
1042             h->mc.prefetch_fenc = h->mc.prefetch_fenc_422;
1043             h->loopf.deblock_chroma[0] = h->loopf.deblock_h_chroma_422;
1044             h->loopf.deblock_chroma_intra[0] = h->loopf.deblock_h_chroma_422_intra;
1045             h->loopf.deblock_chroma_mbaff = h->loopf.deblock_chroma_422_mbaff;
1046             h->loopf.deblock_chroma_intra_mbaff = h->loopf.deblock_chroma_422_intra_mbaff;
1047             h->pixf.intra_mbcmp_x3_chroma = h->pixf.intra_mbcmp_x3_8x16c;
1048             h->quantf.coeff_last[DCT_CHROMA_DC] = h->quantf.coeff_last8;
1049             h->quantf.coeff_level_run[DCT_CHROMA_DC] = h->quantf.coeff_level_run8;
1050             break;
1051         case CHROMA_444:
1052             h->mc.prefetch_fenc = h->mc.prefetch_fenc_422; /* FIXME: doesn't cover V plane */
1053             h->loopf.deblock_chroma_mbaff = h->loopf.deblock_luma_mbaff;
1054             h->loopf.deblock_chroma_intra_mbaff = h->loopf.deblock_luma_intra_mbaff;
1055             break;
1056     }
1057 }
1058
1059 static void x264_set_aspect_ratio( x264_t *h, x264_param_t *param, int initial )
1060 {
1061     /* VUI */
1062     if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
1063     {
1064         uint32_t i_w = param->vui.i_sar_width;
1065         uint32_t i_h = param->vui.i_sar_height;
1066         uint32_t old_w = h->param.vui.i_sar_width;
1067         uint32_t old_h = h->param.vui.i_sar_height;
1068
1069         x264_reduce_fraction( &i_w, &i_h );
1070
1071         while( i_w > 65535 || i_h > 65535 )
1072         {
1073             i_w /= 2;
1074             i_h /= 2;
1075         }
1076
1077         x264_reduce_fraction( &i_w, &i_h );
1078
1079         if( i_w != old_w || i_h != old_h || initial )
1080         {
1081             h->param.vui.i_sar_width = 0;
1082             h->param.vui.i_sar_height = 0;
1083             if( i_w == 0 || i_h == 0 )
1084                 x264_log( h, X264_LOG_WARNING, "cannot create valid sample aspect ratio\n" );
1085             else
1086             {
1087                 x264_log( h, initial?X264_LOG_INFO:X264_LOG_DEBUG, "using SAR=%d/%d\n", i_w, i_h );
1088                 h->param.vui.i_sar_width = i_w;
1089                 h->param.vui.i_sar_height = i_h;
1090             }
1091             x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
1092         }
1093     }
1094 }
1095
1096 /****************************************************************************
1097  * x264_encoder_open:
1098  ****************************************************************************/
1099 x264_t *x264_encoder_open( x264_param_t *param )
1100 {
1101     x264_t *h;
1102     char buf[1000], *p;
1103     int qp, i_slicetype_length;
1104
1105     CHECKED_MALLOCZERO( h, sizeof(x264_t) );
1106
1107     /* Create a copy of param */
1108     memcpy( &h->param, param, sizeof(x264_param_t) );
1109
1110     if( param->param_free )
1111         param->param_free( param );
1112
1113     if( x264_threading_init() )
1114     {
1115         x264_log( h, X264_LOG_ERROR, "unable to initialize threading\n" );
1116         goto fail;
1117     }
1118
1119     if( x264_validate_parameters( h, 1 ) < 0 )
1120         goto fail;
1121
1122     if( h->param.psz_cqm_file )
1123         if( x264_cqm_parse_file( h, h->param.psz_cqm_file ) < 0 )
1124             goto fail;
1125
1126     if( h->param.rc.psz_stat_out )
1127         h->param.rc.psz_stat_out = strdup( h->param.rc.psz_stat_out );
1128     if( h->param.rc.psz_stat_in )
1129         h->param.rc.psz_stat_in = strdup( h->param.rc.psz_stat_in );
1130
1131     x264_reduce_fraction( &h->param.i_fps_num, &h->param.i_fps_den );
1132     x264_reduce_fraction( &h->param.i_timebase_num, &h->param.i_timebase_den );
1133
1134     /* Init x264_t */
1135     h->i_frame = -1;
1136     h->i_frame_num = 0;
1137     h->i_idr_pic_id = 0;
1138
1139     if( (uint64_t)h->param.i_timebase_den * 2 > UINT32_MAX )
1140     {
1141         x264_log( h, X264_LOG_ERROR, "Effective timebase denominator %u exceeds H.264 maximum\n", h->param.i_timebase_den );
1142         goto fail;
1143     }
1144
1145     x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
1146     x264_pps_init( h->pps, h->param.i_sps_id, &h->param, h->sps );
1147
1148     x264_set_aspect_ratio( h, &h->param, 1 );
1149
1150     x264_validate_levels( h, 1 );
1151
1152     h->chroma_qp_table = i_chroma_qp_table + 12 + h->pps->i_chroma_qp_index_offset;
1153
1154     if( x264_cqm_init( h ) < 0 )
1155         goto fail;
1156
1157     h->mb.i_mb_width = h->sps->i_mb_width;
1158     h->mb.i_mb_height = h->sps->i_mb_height;
1159     h->mb.i_mb_count = h->mb.i_mb_width * h->mb.i_mb_height;
1160
1161     h->mb.chroma_h_shift = CHROMA_FORMAT == CHROMA_420 || CHROMA_FORMAT == CHROMA_422;
1162     h->mb.chroma_v_shift = CHROMA_FORMAT == CHROMA_420;
1163
1164     /* Adaptive MBAFF and subme 0 are not supported as we require halving motion
1165      * vectors during prediction, resulting in hpel mvs.
1166      * The chosen solution is to make MBAFF non-adaptive in this case. */
1167     h->mb.b_adaptive_mbaff = PARAM_INTERLACED && h->param.analyse.i_subpel_refine;
1168
1169     /* Init frames. */
1170     if( h->param.i_bframe_adaptive == X264_B_ADAPT_TRELLIS && !h->param.rc.b_stat_read )
1171         h->frames.i_delay = X264_MAX(h->param.i_bframe,3)*4;
1172     else
1173         h->frames.i_delay = h->param.i_bframe;
1174     if( h->param.rc.b_mb_tree || h->param.rc.i_vbv_buffer_size )
1175         h->frames.i_delay = X264_MAX( h->frames.i_delay, h->param.rc.i_lookahead );
1176     i_slicetype_length = h->frames.i_delay;
1177     h->frames.i_delay += h->i_thread_frames - 1;
1178     h->frames.i_delay += h->param.i_sync_lookahead;
1179     h->frames.i_delay += h->param.b_vfr_input;
1180     h->frames.i_bframe_delay = h->param.i_bframe ? (h->param.i_bframe_pyramid ? 2 : 1) : 0;
1181
1182     h->frames.i_max_ref0 = h->param.i_frame_reference;
1183     h->frames.i_max_ref1 = X264_MIN( h->sps->vui.i_num_reorder_frames, h->param.i_frame_reference );
1184     h->frames.i_max_dpb  = h->sps->vui.i_max_dec_frame_buffering;
1185     h->frames.b_have_lowres = !h->param.rc.b_stat_read
1186         && ( h->param.rc.i_rc_method == X264_RC_ABR
1187           || h->param.rc.i_rc_method == X264_RC_CRF
1188           || h->param.i_bframe_adaptive
1189           || h->param.i_scenecut_threshold
1190           || h->param.rc.b_mb_tree
1191           || h->param.analyse.i_weighted_pred );
1192     h->frames.b_have_lowres |= h->param.rc.b_stat_read && h->param.rc.i_vbv_buffer_size > 0;
1193     h->frames.b_have_sub8x8_esa = !!(h->param.analyse.inter & X264_ANALYSE_PSUB8x8);
1194
1195     h->frames.i_last_idr =
1196     h->frames.i_last_keyframe = - h->param.i_keyint_max;
1197     h->frames.i_input    = 0;
1198     h->frames.i_largest_pts = h->frames.i_second_largest_pts = -1;
1199     h->frames.i_poc_last_open_gop = -1;
1200
1201     CHECKED_MALLOCZERO( h->frames.unused[0], (h->frames.i_delay + 3) * sizeof(x264_frame_t *) );
1202     /* Allocate room for max refs plus a few extra just in case. */
1203     CHECKED_MALLOCZERO( h->frames.unused[1], (h->i_thread_frames + X264_REF_MAX + 4) * sizeof(x264_frame_t *) );
1204     CHECKED_MALLOCZERO( h->frames.current, (h->param.i_sync_lookahead + h->param.i_bframe
1205                         + h->i_thread_frames + 3) * sizeof(x264_frame_t *) );
1206     if( h->param.analyse.i_weighted_pred > 0 )
1207         CHECKED_MALLOCZERO( h->frames.blank_unused, h->i_thread_frames * 4 * sizeof(x264_frame_t *) );
1208     h->i_ref[0] = h->i_ref[1] = 0;
1209     h->i_cpb_delay = h->i_coded_fields = h->i_disp_fields = 0;
1210     h->i_prev_duration = ((uint64_t)h->param.i_fps_den * h->sps->vui.i_time_scale) / ((uint64_t)h->param.i_fps_num * h->sps->vui.i_num_units_in_tick);
1211     h->i_disp_fields_last_frame = -1;
1212     x264_rdo_init();
1213
1214     /* init CPU functions */
1215     x264_predict_16x16_init( h->param.cpu, h->predict_16x16 );
1216     x264_predict_8x8c_init( h->param.cpu, h->predict_8x8c );
1217     x264_predict_8x16c_init( h->param.cpu, h->predict_8x16c );
1218     x264_predict_8x8_init( h->param.cpu, h->predict_8x8, &h->predict_8x8_filter );
1219     x264_predict_4x4_init( h->param.cpu, h->predict_4x4 );
1220     x264_pixel_init( h->param.cpu, &h->pixf );
1221     x264_dct_init( h->param.cpu, &h->dctf );
1222     x264_zigzag_init( h->param.cpu, &h->zigzagf_progressive, &h->zigzagf_interlaced );
1223     memcpy( &h->zigzagf, PARAM_INTERLACED ? &h->zigzagf_interlaced : &h->zigzagf_progressive, sizeof(h->zigzagf) );
1224     x264_mc_init( h->param.cpu, &h->mc );
1225     x264_quant_init( h, h->param.cpu, &h->quantf );
1226     x264_deblock_init( h->param.cpu, &h->loopf, PARAM_INTERLACED );
1227     x264_bitstream_init( h->param.cpu, &h->bsf );
1228     if( h->param.b_cabac )
1229         x264_cabac_init( h );
1230     else
1231         x264_stack_align( x264_cavlc_init, h );
1232
1233     mbcmp_init( h );
1234     chroma_dsp_init( h );
1235
1236     p = buf + sprintf( buf, "using cpu capabilities:" );
1237     for( int i = 0; x264_cpu_names[i].flags; i++ )
1238     {
1239         if( !strcmp(x264_cpu_names[i].name, "SSE2")
1240             && h->param.cpu & (X264_CPU_SSE2_IS_FAST|X264_CPU_SSE2_IS_SLOW) )
1241             continue;
1242         if( !strcmp(x264_cpu_names[i].name, "SSE3")
1243             && (h->param.cpu & X264_CPU_SSSE3 || !(h->param.cpu & X264_CPU_CACHELINE_64)) )
1244             continue;
1245         if( !strcmp(x264_cpu_names[i].name, "SSE4.1")
1246             && (h->param.cpu & X264_CPU_SSE42) )
1247             continue;
1248         if( (h->param.cpu & x264_cpu_names[i].flags) == x264_cpu_names[i].flags
1249             && (!i || x264_cpu_names[i].flags != x264_cpu_names[i-1].flags) )
1250             p += sprintf( p, " %s", x264_cpu_names[i].name );
1251     }
1252     if( !h->param.cpu )
1253         p += sprintf( p, " none!" );
1254     x264_log( h, X264_LOG_INFO, "%s\n", buf );
1255
1256     float *logs = x264_analyse_prepare_costs( h );
1257     if( !logs )
1258         goto fail;
1259     for( qp = X264_MIN( h->param.rc.i_qp_min, QP_MAX_SPEC ); qp <= h->param.rc.i_qp_max; qp++ )
1260         if( x264_analyse_init_costs( h, logs, qp ) )
1261             goto fail;
1262     if( x264_analyse_init_costs( h, logs, X264_LOOKAHEAD_QP ) )
1263         goto fail;
1264     x264_free( logs );
1265
1266     static const uint16_t cost_mv_correct[7] = { 24, 47, 95, 189, 379, 757, 1515 };
1267     /* Checks for known miscompilation issues. */
1268     if( h->cost_mv[X264_LOOKAHEAD_QP][2013] != cost_mv_correct[BIT_DEPTH-8] )
1269     {
1270         x264_log( h, X264_LOG_ERROR, "MV cost test failed: x264 has been miscompiled!\n" );
1271         goto fail;
1272     }
1273
1274     /* Must be volatile or else GCC will optimize it out. */
1275     volatile int temp = 392;
1276     if( x264_clz( temp ) != 23 )
1277     {
1278         x264_log( h, X264_LOG_ERROR, "CLZ test failed: x264 has been miscompiled!\n" );
1279 #if ARCH_X86 || ARCH_X86_64
1280         x264_log( h, X264_LOG_ERROR, "Are you attempting to run an SSE4a-targeted build on a CPU that\n" );
1281         x264_log( h, X264_LOG_ERROR, "doesn't support it?\n" );
1282 #endif
1283         goto fail;
1284     }
1285
1286     h->out.i_nal = 0;
1287     h->out.i_bitstream = X264_MAX( 1000000, h->param.i_width * h->param.i_height * 4
1288         * ( h->param.rc.i_rc_method == X264_RC_ABR ? pow( 0.95, h->param.rc.i_qp_min )
1289           : pow( 0.95, h->param.rc.i_qp_constant ) * X264_MAX( 1, h->param.rc.f_ip_factor )));
1290
1291     h->nal_buffer_size = h->out.i_bitstream * 3/2 + 4;
1292     CHECKED_MALLOC( h->nal_buffer, h->nal_buffer_size );
1293
1294     if( h->param.i_threads > 1 &&
1295         x264_threadpool_init( &h->threadpool, h->param.i_threads, (void*)x264_encoder_thread_init, h ) )
1296         goto fail;
1297     if( h->param.i_lookahead_threads > 1 &&
1298         x264_threadpool_init( &h->lookaheadpool, h->param.i_lookahead_threads, (void*)x264_lookahead_thread_init, h ) )
1299         goto fail;
1300
1301     h->thread[0] = h;
1302     for( int i = 1; i < h->param.i_threads + !!h->param.i_sync_lookahead; i++ )
1303         CHECKED_MALLOC( h->thread[i], sizeof(x264_t) );
1304     if( h->param.i_lookahead_threads > 1 )
1305         for( int i = 0; i < h->param.i_lookahead_threads; i++ )
1306         {
1307             CHECKED_MALLOC( h->lookahead_thread[i], sizeof(x264_t) );
1308             *h->lookahead_thread[i] = *h;
1309         }
1310
1311     for( int i = 0; i < h->param.i_threads; i++ )
1312     {
1313         int init_nal_count = h->param.i_slice_count + 3;
1314         int allocate_threadlocal_data = !h->param.b_sliced_threads || !i;
1315         if( i > 0 )
1316             *h->thread[i] = *h;
1317
1318         if( x264_pthread_mutex_init( &h->thread[i]->mutex, NULL ) )
1319             goto fail;
1320         if( x264_pthread_cond_init( &h->thread[i]->cv, NULL ) )
1321             goto fail;
1322
1323         if( allocate_threadlocal_data )
1324         {
1325             h->thread[i]->fdec = x264_frame_pop_unused( h, 1 );
1326             if( !h->thread[i]->fdec )
1327                 goto fail;
1328         }
1329         else
1330             h->thread[i]->fdec = h->thread[0]->fdec;
1331
1332         CHECKED_MALLOC( h->thread[i]->out.p_bitstream, h->out.i_bitstream );
1333         /* Start each thread with room for init_nal_count NAL units; it'll realloc later if needed. */
1334         CHECKED_MALLOC( h->thread[i]->out.nal, init_nal_count*sizeof(x264_nal_t) );
1335         h->thread[i]->out.i_nals_allocated = init_nal_count;
1336
1337         if( allocate_threadlocal_data && x264_macroblock_cache_allocate( h->thread[i] ) < 0 )
1338             goto fail;
1339     }
1340
1341     if( x264_lookahead_init( h, i_slicetype_length ) )
1342         goto fail;
1343
1344     for( int i = 0; i < h->param.i_threads; i++ )
1345         if( x264_macroblock_thread_allocate( h->thread[i], 0 ) < 0 )
1346             goto fail;
1347
1348     if( x264_ratecontrol_new( h ) < 0 )
1349         goto fail;
1350
1351     if( h->param.i_nal_hrd )
1352     {
1353         x264_log( h, X264_LOG_DEBUG, "HRD bitrate: %i bits/sec\n", h->sps->vui.hrd.i_bit_rate_unscaled );
1354         x264_log( h, X264_LOG_DEBUG, "CPB size: %i bits\n", h->sps->vui.hrd.i_cpb_size_unscaled );
1355     }
1356
1357     if( h->param.psz_dump_yuv )
1358     {
1359         /* create or truncate the reconstructed video file */
1360         FILE *f = fopen( h->param.psz_dump_yuv, "w" );
1361         if( !f )
1362         {
1363             x264_log( h, X264_LOG_ERROR, "dump_yuv: can't write to %s\n", h->param.psz_dump_yuv );
1364             goto fail;
1365         }
1366         else if( !x264_is_regular_file( f ) )
1367         {
1368             x264_log( h, X264_LOG_ERROR, "dump_yuv: incompatible with non-regular file %s\n", h->param.psz_dump_yuv );
1369             goto fail;
1370         }
1371         fclose( f );
1372     }
1373
1374     const char *profile = h->sps->i_profile_idc == PROFILE_BASELINE ? "Constrained Baseline" :
1375                           h->sps->i_profile_idc == PROFILE_MAIN ? "Main" :
1376                           h->sps->i_profile_idc == PROFILE_HIGH ? "High" :
1377                           h->sps->i_profile_idc == PROFILE_HIGH10 ? (h->sps->b_constraint_set3 == 1 ? "High 10 Intra" : "High 10") :
1378                           h->sps->i_profile_idc == PROFILE_HIGH422 ? (h->sps->b_constraint_set3 == 1 ? "High 4:2:2 Intra" : "High 4:2:2") :
1379                           h->sps->b_constraint_set3 == 1 ? "High 4:4:4 Intra" : "High 4:4:4 Predictive";
1380     char level[4];
1381     snprintf( level, sizeof(level), "%d.%d", h->sps->i_level_idc/10, h->sps->i_level_idc%10 );
1382     if( h->sps->i_level_idc == 9 || ( h->sps->i_level_idc == 11 && h->sps->b_constraint_set3 &&
1383         (h->sps->i_profile_idc == PROFILE_BASELINE || h->sps->i_profile_idc == PROFILE_MAIN) ) )
1384         strcpy( level, "1b" );
1385
1386     if( h->sps->i_profile_idc < PROFILE_HIGH10 )
1387     {
1388         x264_log( h, X264_LOG_INFO, "profile %s, level %s\n",
1389             profile, level );
1390     }
1391     else
1392     {
1393         static const char * const subsampling[4] = { "4:0:0", "4:2:0", "4:2:2", "4:4:4" };
1394         x264_log( h, X264_LOG_INFO, "profile %s, level %s, %s %d-bit\n",
1395             profile, level, subsampling[CHROMA_FORMAT], BIT_DEPTH );
1396     }
1397
1398     return h;
1399 fail:
1400     x264_free( h );
1401     return NULL;
1402 }
1403
1404 /****************************************************************************
1405  * x264_encoder_reconfig:
1406  ****************************************************************************/
1407 int x264_encoder_reconfig( x264_t *h, x264_param_t *param )
1408 {
1409     /* If the previous frame isn't done encoding, reconfiguring is probably dangerous. */
1410     if( h->param.b_sliced_threads )
1411         if( x264_threadpool_wait_all( h ) < 0 )
1412             return -1;
1413
1414     int rc_reconfig = 0;
1415     h = h->thread[h->thread[0]->i_thread_phase];
1416     x264_set_aspect_ratio( h, param, 0 );
1417 #define COPY(var) h->param.var = param->var
1418     COPY( i_frame_reference ); // but never uses more refs than initially specified
1419     COPY( i_bframe_bias );
1420     if( h->param.i_scenecut_threshold )
1421         COPY( i_scenecut_threshold ); // can't turn it on or off, only vary the threshold
1422     COPY( b_deblocking_filter );
1423     COPY( i_deblocking_filter_alphac0 );
1424     COPY( i_deblocking_filter_beta );
1425     COPY( i_frame_packing );
1426     COPY( analyse.inter );
1427     COPY( analyse.intra );
1428     COPY( analyse.i_direct_mv_pred );
1429     /* Scratch buffer prevents me_range from being increased for esa/tesa */
1430     if( h->param.analyse.i_me_method < X264_ME_ESA || param->analyse.i_me_range < h->param.analyse.i_me_range )
1431         COPY( analyse.i_me_range );
1432     COPY( analyse.i_noise_reduction );
1433     /* We can't switch out of subme=0 during encoding. */
1434     if( h->param.analyse.i_subpel_refine )
1435         COPY( analyse.i_subpel_refine );
1436     COPY( analyse.i_trellis );
1437     COPY( analyse.b_chroma_me );
1438     COPY( analyse.b_dct_decimate );
1439     COPY( analyse.b_fast_pskip );
1440     COPY( analyse.b_mixed_references );
1441     COPY( analyse.f_psy_rd );
1442     COPY( analyse.f_psy_trellis );
1443     COPY( crop_rect );
1444     // can only twiddle these if they were enabled to begin with:
1445     if( h->param.analyse.i_me_method >= X264_ME_ESA || param->analyse.i_me_method < X264_ME_ESA )
1446         COPY( analyse.i_me_method );
1447     if( h->param.analyse.i_me_method >= X264_ME_ESA && !h->frames.b_have_sub8x8_esa )
1448         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
1449     if( h->pps->b_transform_8x8_mode )
1450         COPY( analyse.b_transform_8x8 );
1451     if( h->frames.i_max_ref1 > 1 )
1452         COPY( i_bframe_pyramid );
1453     COPY( i_slice_max_size );
1454     COPY( i_slice_max_mbs );
1455     COPY( i_slice_count );
1456     COPY( b_tff );
1457
1458     /* VBV can't be turned on if it wasn't on to begin with */
1459     if( h->param.rc.i_vbv_max_bitrate > 0 && h->param.rc.i_vbv_buffer_size > 0 &&
1460           param->rc.i_vbv_max_bitrate > 0 &&   param->rc.i_vbv_buffer_size > 0 )
1461     {
1462         rc_reconfig |= h->param.rc.i_vbv_max_bitrate != param->rc.i_vbv_max_bitrate;
1463         rc_reconfig |= h->param.rc.i_vbv_buffer_size != param->rc.i_vbv_buffer_size;
1464         rc_reconfig |= h->param.rc.i_bitrate != param->rc.i_bitrate;
1465         COPY( rc.i_vbv_max_bitrate );
1466         COPY( rc.i_vbv_buffer_size );
1467         COPY( rc.i_bitrate );
1468     }
1469     rc_reconfig |= h->param.rc.f_rf_constant != param->rc.f_rf_constant;
1470     rc_reconfig |= h->param.rc.f_rf_constant_max != param->rc.f_rf_constant_max;
1471     COPY( rc.f_rf_constant );
1472     COPY( rc.f_rf_constant_max );
1473 #undef COPY
1474
1475     mbcmp_init( h );
1476
1477     int ret = x264_validate_parameters( h, 0 );
1478
1479     /* Supported reconfiguration options (1-pass only):
1480      * vbv-maxrate
1481      * vbv-bufsize
1482      * crf
1483      * bitrate (CBR only) */
1484     if( !ret && rc_reconfig )
1485         x264_ratecontrol_init_reconfigurable( h, 0 );
1486
1487     return ret;
1488 }
1489
1490 /****************************************************************************
1491  * x264_encoder_parameters:
1492  ****************************************************************************/
1493 void x264_encoder_parameters( x264_t *h, x264_param_t *param )
1494 {
1495     memcpy( param, &h->thread[h->i_thread_phase]->param, sizeof(x264_param_t) );
1496 }
1497
1498 /* internal usage */
1499 static void x264_nal_start( x264_t *h, int i_type, int i_ref_idc )
1500 {
1501     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1502
1503     nal->i_ref_idc        = i_ref_idc;
1504     nal->i_type           = i_type;
1505     nal->b_long_startcode = 1;
1506
1507     nal->i_payload= 0;
1508     nal->p_payload= &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8];
1509 }
1510
1511 /* if number of allocated nals is not enough, re-allocate a larger one. */
1512 static int x264_nal_check_buffer( x264_t *h )
1513 {
1514     if( h->out.i_nal >= h->out.i_nals_allocated )
1515     {
1516         x264_nal_t *new_out = x264_malloc( sizeof(x264_nal_t) * (h->out.i_nals_allocated*2) );
1517         if( !new_out )
1518             return -1;
1519         memcpy( new_out, h->out.nal, sizeof(x264_nal_t) * (h->out.i_nals_allocated) );
1520         x264_free( h->out.nal );
1521         h->out.nal = new_out;
1522         h->out.i_nals_allocated *= 2;
1523     }
1524     return 0;
1525 }
1526
1527 static int x264_nal_end( x264_t *h )
1528 {
1529     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1530     uint8_t *end = &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8];
1531     nal->i_payload = end - nal->p_payload;
1532     /* nal_escape_mmx reads past the end of the input.
1533      * While undefined padding wouldn't actually affect the output, it makes valgrind unhappy. */
1534     memset( end, 0xff, 32 );
1535     if( h->param.nalu_process )
1536         h->param.nalu_process( h, nal, h->fenc->opaque );
1537     h->out.i_nal++;
1538
1539     return x264_nal_check_buffer( h );
1540 }
1541
1542 static int x264_encoder_encapsulate_nals( x264_t *h, int start )
1543 {
1544     int nal_size = 0, previous_nal_size = 0;
1545
1546     if( h->param.nalu_process )
1547     {
1548         for( int i = start; i < h->out.i_nal; i++ )
1549             nal_size += h->out.nal[i].i_payload;
1550         return nal_size;
1551     }
1552
1553     for( int i = 0; i < start; i++ )
1554         previous_nal_size += h->out.nal[i].i_payload;
1555
1556     for( int i = start; i < h->out.i_nal; i++ )
1557         nal_size += h->out.nal[i].i_payload;
1558
1559     /* Worst-case NAL unit escaping: reallocate the buffer if it's too small. */
1560     int necessary_size = nal_size * 3/2 + h->out.i_nal * 4;
1561     if( h->nal_buffer_size < necessary_size )
1562     {
1563         h->nal_buffer_size = necessary_size * 2;
1564         uint8_t *buf = x264_malloc( h->nal_buffer_size );
1565         if( !buf )
1566             return -1;
1567         if( previous_nal_size )
1568             memcpy( buf, h->nal_buffer, previous_nal_size );
1569         x264_free( h->nal_buffer );
1570         h->nal_buffer = buf;
1571     }
1572
1573     uint8_t *nal_buffer = h->nal_buffer + previous_nal_size;
1574
1575     for( int i = start; i < h->out.i_nal; i++ )
1576     {
1577         h->out.nal[i].b_long_startcode = !i || h->out.nal[i].i_type == NAL_SPS || h->out.nal[i].i_type == NAL_PPS;
1578         x264_nal_encode( h, nal_buffer, &h->out.nal[i] );
1579         nal_buffer += h->out.nal[i].i_payload;
1580     }
1581
1582     x264_emms();
1583
1584     return nal_buffer - (h->nal_buffer + previous_nal_size);
1585 }
1586
1587 /****************************************************************************
1588  * x264_encoder_headers:
1589  ****************************************************************************/
1590 int x264_encoder_headers( x264_t *h, x264_nal_t **pp_nal, int *pi_nal )
1591 {
1592     int frame_size = 0;
1593     /* init bitstream context */
1594     h->out.i_nal = 0;
1595     bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
1596
1597     /* Write SEI, SPS and PPS. */
1598
1599     /* generate sequence parameters */
1600     x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
1601     x264_sps_write( &h->out.bs, h->sps );
1602     if( x264_nal_end( h ) )
1603         return -1;
1604
1605     /* generate picture parameters */
1606     x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
1607     x264_pps_write( &h->out.bs, h->sps, h->pps );
1608     if( x264_nal_end( h ) )
1609         return -1;
1610
1611     /* identify ourselves */
1612     x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
1613     if( x264_sei_version_write( h, &h->out.bs ) )
1614         return -1;
1615     if( x264_nal_end( h ) )
1616         return -1;
1617
1618     frame_size = x264_encoder_encapsulate_nals( h, 0 );
1619     if( frame_size < 0 )
1620         return -1;
1621
1622     /* now set output*/
1623     *pi_nal = h->out.i_nal;
1624     *pp_nal = &h->out.nal[0];
1625     h->out.i_nal = 0;
1626
1627     return frame_size;
1628 }
1629
1630 /* Check to see whether we have chosen a reference list ordering different
1631  * from the standard's default. */
1632 static inline void x264_reference_check_reorder( x264_t *h )
1633 {
1634     /* The reorder check doesn't check for missing frames, so just
1635      * force a reorder if one of the reference list is corrupt. */
1636     for( int i = 0; h->frames.reference[i]; i++ )
1637         if( h->frames.reference[i]->b_corrupt )
1638         {
1639             h->b_ref_reorder[0] = 1;
1640             return;
1641         }
1642     for( int list = 0; list <= (h->sh.i_type == SLICE_TYPE_B); list++ )
1643         for( int i = 0; i < h->i_ref[list] - 1; i++ )
1644         {
1645             int framenum_diff = h->fref[list][i+1]->i_frame_num - h->fref[list][i]->i_frame_num;
1646             int poc_diff = h->fref[list][i+1]->i_poc - h->fref[list][i]->i_poc;
1647             /* P and B-frames use different default orders. */
1648             if( h->sh.i_type == SLICE_TYPE_P ? framenum_diff > 0 : list == 1 ? poc_diff < 0 : poc_diff > 0 )
1649             {
1650                 h->b_ref_reorder[list] = 1;
1651                 return;
1652             }
1653         }
1654 }
1655
1656 /* return -1 on failure, else return the index of the new reference frame */
1657 int x264_weighted_reference_duplicate( x264_t *h, int i_ref, const x264_weight_t *w )
1658 {
1659     int i = h->i_ref[0];
1660     int j = 1;
1661     x264_frame_t *newframe;
1662     if( i <= 1 ) /* empty list, definitely can't duplicate frame */
1663         return -1;
1664
1665     //Duplication is only used in X264_WEIGHTP_SMART
1666     if( h->param.analyse.i_weighted_pred != X264_WEIGHTP_SMART )
1667         return -1;
1668
1669     /* Duplication is a hack to compensate for crappy rounding in motion compensation.
1670      * With high bit depth, it's not worth doing, so turn it off except in the case of
1671      * unweighted dupes. */
1672     if( BIT_DEPTH > 8 && w != x264_weight_none )
1673         return -1;
1674
1675     newframe = x264_frame_pop_blank_unused( h );
1676     if( !newframe )
1677         return -1;
1678
1679     //FIXME: probably don't need to copy everything
1680     *newframe = *h->fref[0][i_ref];
1681     newframe->i_reference_count = 1;
1682     newframe->orig = h->fref[0][i_ref];
1683     newframe->b_duplicate = 1;
1684     memcpy( h->fenc->weight[j], w, sizeof(h->fenc->weight[i]) );
1685
1686     /* shift the frames to make space for the dupe. */
1687     h->b_ref_reorder[0] = 1;
1688     if( h->i_ref[0] < X264_REF_MAX )
1689         ++h->i_ref[0];
1690     h->fref[0][X264_REF_MAX-1] = NULL;
1691     x264_frame_unshift( &h->fref[0][j], newframe );
1692
1693     return j;
1694 }
1695
1696 static void x264_weighted_pred_init( x264_t *h )
1697 {
1698     /* for now no analysis and set all weights to nothing */
1699     for( int i_ref = 0; i_ref < h->i_ref[0]; i_ref++ )
1700         h->fenc->weighted[i_ref] = h->fref[0][i_ref]->filtered[0][0];
1701
1702     // FIXME: This only supports weighting of one reference frame
1703     // and duplicates of that frame.
1704     h->fenc->i_lines_weighted = 0;
1705
1706     for( int i_ref = 0; i_ref < (h->i_ref[0] << SLICE_MBAFF); i_ref++ )
1707         for( int i = 0; i < 3; i++ )
1708             h->sh.weight[i_ref][i].weightfn = NULL;
1709
1710
1711     if( h->sh.i_type != SLICE_TYPE_P || h->param.analyse.i_weighted_pred <= 0 )
1712         return;
1713
1714     int i_padv = PADV << PARAM_INTERLACED;
1715     int denom = -1;
1716     int weightplane[2] = { 0, 0 };
1717     int buffer_next = 0;
1718     for( int i = 0; i < 3; i++ )
1719     {
1720         for( int j = 0; j < h->i_ref[0]; j++ )
1721         {
1722             if( h->fenc->weight[j][i].weightfn )
1723             {
1724                 h->sh.weight[j][i] = h->fenc->weight[j][i];
1725                 // if weight is useless, don't write it to stream
1726                 if( h->sh.weight[j][i].i_scale == 1<<h->sh.weight[j][i].i_denom && h->sh.weight[j][i].i_offset == 0 )
1727                     h->sh.weight[j][i].weightfn = NULL;
1728                 else
1729                 {
1730                     if( !weightplane[!!i] )
1731                     {
1732                         weightplane[!!i] = 1;
1733                         h->sh.weight[0][!!i].i_denom = denom = h->sh.weight[j][i].i_denom;
1734                         assert( x264_clip3( denom, 0, 7 ) == denom );
1735                     }
1736
1737                     assert( h->sh.weight[j][i].i_denom == denom );
1738                     if( !i )
1739                     {
1740                         h->fenc->weighted[j] = h->mb.p_weight_buf[buffer_next++] + h->fenc->i_stride[0] * i_padv + PADH;
1741                         //scale full resolution frame
1742                         if( h->param.i_threads == 1 )
1743                         {
1744                             pixel *src = h->fref[0][j]->filtered[0][0] - h->fref[0][j]->i_stride[0]*i_padv - PADH;
1745                             pixel *dst = h->fenc->weighted[j] - h->fenc->i_stride[0]*i_padv - PADH;
1746                             int stride = h->fenc->i_stride[0];
1747                             int width = h->fenc->i_width[0] + PADH*2;
1748                             int height = h->fenc->i_lines[0] + i_padv*2;
1749                             x264_weight_scale_plane( h, dst, stride, src, stride, width, height, &h->sh.weight[j][0] );
1750                             h->fenc->i_lines_weighted = height;
1751                         }
1752                     }
1753                 }
1754             }
1755         }
1756     }
1757
1758     if( weightplane[1] )
1759         for( int i = 0; i < h->i_ref[0]; i++ )
1760         {
1761             if( h->sh.weight[i][1].weightfn && !h->sh.weight[i][2].weightfn )
1762             {
1763                 h->sh.weight[i][2].i_scale = 1 << h->sh.weight[0][1].i_denom;
1764                 h->sh.weight[i][2].i_offset = 0;
1765             }
1766             else if( h->sh.weight[i][2].weightfn && !h->sh.weight[i][1].weightfn )
1767             {
1768                 h->sh.weight[i][1].i_scale = 1 << h->sh.weight[0][1].i_denom;
1769                 h->sh.weight[i][1].i_offset = 0;
1770             }
1771         }
1772
1773     if( !weightplane[0] )
1774         h->sh.weight[0][0].i_denom = 0;
1775     if( !weightplane[1] )
1776         h->sh.weight[0][1].i_denom = 0;
1777     h->sh.weight[0][2].i_denom = h->sh.weight[0][1].i_denom;
1778 }
1779
1780 static inline int x264_reference_distance( x264_t *h, x264_frame_t *frame )
1781 {
1782     if( h->param.i_frame_packing == 5 )
1783         return abs((h->fenc->i_frame&~1) - (frame->i_frame&~1)) +
1784                   ((h->fenc->i_frame&1) != (frame->i_frame&1));
1785     else
1786         return abs(h->fenc->i_frame - frame->i_frame);
1787 }
1788
1789 static inline void x264_reference_build_list( x264_t *h, int i_poc )
1790 {
1791     int b_ok;
1792
1793     /* build ref list 0/1 */
1794     h->mb.pic.i_fref[0] = h->i_ref[0] = 0;
1795     h->mb.pic.i_fref[1] = h->i_ref[1] = 0;
1796     if( h->sh.i_type == SLICE_TYPE_I )
1797         return;
1798
1799     for( int i = 0; h->frames.reference[i]; i++ )
1800     {
1801         if( h->frames.reference[i]->b_corrupt )
1802             continue;
1803         if( h->frames.reference[i]->i_poc < i_poc )
1804             h->fref[0][h->i_ref[0]++] = h->frames.reference[i];
1805         else if( h->frames.reference[i]->i_poc > i_poc )
1806             h->fref[1][h->i_ref[1]++] = h->frames.reference[i];
1807     }
1808
1809     /* Order reference lists by distance from the current frame. */
1810     for( int list = 0; list < 2; list++ )
1811     {
1812         h->fref_nearest[list] = h->fref[list][0];
1813         do
1814         {
1815             b_ok = 1;
1816             for( int i = 0; i < h->i_ref[list] - 1; i++ )
1817             {
1818                 if( list ? h->fref[list][i+1]->i_poc < h->fref_nearest[list]->i_poc
1819                          : h->fref[list][i+1]->i_poc > h->fref_nearest[list]->i_poc )
1820                     h->fref_nearest[list] = h->fref[list][i+1];
1821                 if( x264_reference_distance( h, h->fref[list][i] ) > x264_reference_distance( h, h->fref[list][i+1] ) )
1822                 {
1823                     XCHG( x264_frame_t*, h->fref[list][i], h->fref[list][i+1] );
1824                     b_ok = 0;
1825                     break;
1826                 }
1827             }
1828         } while( !b_ok );
1829     }
1830
1831     if( h->sh.i_mmco_remove_from_end )
1832         for( int i = h->i_ref[0]-1; i >= h->i_ref[0] - h->sh.i_mmco_remove_from_end; i-- )
1833         {
1834             int diff = h->i_frame_num - h->fref[0][i]->i_frame_num;
1835             h->sh.mmco[h->sh.i_mmco_command_count].i_poc = h->fref[0][i]->i_poc;
1836             h->sh.mmco[h->sh.i_mmco_command_count++].i_difference_of_pic_nums = diff;
1837         }
1838
1839     x264_reference_check_reorder( h );
1840
1841     h->i_ref[1] = X264_MIN( h->i_ref[1], h->frames.i_max_ref1 );
1842     h->i_ref[0] = X264_MIN( h->i_ref[0], h->frames.i_max_ref0 );
1843     h->i_ref[0] = X264_MIN( h->i_ref[0], h->param.i_frame_reference ); // if reconfig() has lowered the limit
1844
1845     /* For Blu-ray compliance, don't reference frames outside of the minigop. */
1846     if( IS_X264_TYPE_B( h->fenc->i_type ) && h->param.b_bluray_compat )
1847         h->i_ref[0] = X264_MIN( h->i_ref[0], IS_X264_TYPE_B( h->fref[0][0]->i_type ) + 1 );
1848
1849     /* add duplicates */
1850     if( h->fenc->i_type == X264_TYPE_P )
1851     {
1852         int idx = -1;
1853         if( h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE )
1854         {
1855             x264_weight_t w[3];
1856             w[1].weightfn = w[2].weightfn = NULL;
1857             if( h->param.rc.b_stat_read )
1858                 x264_ratecontrol_set_weights( h, h->fenc );
1859
1860             if( !h->fenc->weight[0][0].weightfn )
1861             {
1862                 h->fenc->weight[0][0].i_denom = 0;
1863                 SET_WEIGHT( w[0], 1, 1, 0, -1 );
1864                 idx = x264_weighted_reference_duplicate( h, 0, w );
1865             }
1866             else
1867             {
1868                 if( h->fenc->weight[0][0].i_scale == 1<<h->fenc->weight[0][0].i_denom )
1869                 {
1870                     SET_WEIGHT( h->fenc->weight[0][0], 1, 1, 0, h->fenc->weight[0][0].i_offset );
1871                 }
1872                 x264_weighted_reference_duplicate( h, 0, x264_weight_none );
1873                 if( h->fenc->weight[0][0].i_offset > -128 )
1874                 {
1875                     w[0] = h->fenc->weight[0][0];
1876                     w[0].i_offset--;
1877                     h->mc.weight_cache( h, &w[0] );
1878                     idx = x264_weighted_reference_duplicate( h, 0, w );
1879                 }
1880             }
1881         }
1882         h->mb.ref_blind_dupe = idx;
1883     }
1884
1885     assert( h->i_ref[0] + h->i_ref[1] <= X264_REF_MAX );
1886     h->mb.pic.i_fref[0] = h->i_ref[0];
1887     h->mb.pic.i_fref[1] = h->i_ref[1];
1888 }
1889
1890 static void x264_fdec_filter_row( x264_t *h, int mb_y, int pass )
1891 {
1892     /* mb_y is the mb to be encoded next, not the mb to be filtered here */
1893     int b_hpel = h->fdec->b_kept_as_ref;
1894     int b_deblock = h->sh.i_disable_deblocking_filter_idc != 1;
1895     int b_end = mb_y == h->i_threadslice_end;
1896     int b_measure_quality = 1;
1897     int min_y = mb_y - (1 << SLICE_MBAFF);
1898     int b_start = min_y == h->i_threadslice_start;
1899     /* Even in interlaced mode, deblocking never modifies more than 4 pixels
1900      * above each MB, as bS=4 doesn't happen for the top of interlaced mbpairs. */
1901     int minpix_y = min_y*16 - 4 * !b_start;
1902     int maxpix_y = mb_y*16 - 4 * !b_end;
1903     b_deblock &= b_hpel || h->param.b_full_recon || h->param.psz_dump_yuv;
1904     if( h->param.b_sliced_threads )
1905     {
1906         switch( pass )
1907         {
1908             /* During encode: only do deblock if asked for */
1909             default:
1910             case 0:
1911                 b_deblock &= h->param.b_full_recon;
1912                 b_hpel = 0;
1913                 break;
1914             /* During post-encode pass: do deblock if not done yet, do hpel for all
1915              * rows except those between slices. */
1916             case 1:
1917                 b_deblock &= !h->param.b_full_recon;
1918                 b_hpel &= !(b_start && min_y > 0);
1919                 b_measure_quality = 0;
1920                 break;
1921             /* Final pass: do the rows between slices in sequence. */
1922             case 2:
1923                 b_deblock = 0;
1924                 b_measure_quality = 0;
1925                 break;
1926         }
1927     }
1928     if( mb_y & SLICE_MBAFF )
1929         return;
1930     if( min_y < h->i_threadslice_start )
1931         return;
1932
1933     if( b_deblock )
1934         for( int y = min_y; y < mb_y; y += (1 << SLICE_MBAFF) )
1935             x264_frame_deblock_row( h, y );
1936
1937     /* FIXME: Prediction requires different borders for interlaced/progressive mc,
1938      * but the actual image data is equivalent. For now, maintain this
1939      * consistency by copying deblocked pixels between planes. */
1940     if( PARAM_INTERLACED && (!h->param.b_sliced_threads || pass == 1) )
1941         for( int p = 0; p < h->fdec->i_plane; p++ )
1942             for( int i = minpix_y>>(CHROMA_V_SHIFT && p); i < maxpix_y>>(CHROMA_V_SHIFT && p); i++ )
1943                 memcpy( h->fdec->plane_fld[p] + i*h->fdec->i_stride[p],
1944                         h->fdec->plane[p]     + i*h->fdec->i_stride[p],
1945                         h->mb.i_mb_width*16*sizeof(pixel) );
1946
1947     if( h->fdec->b_kept_as_ref && (!h->param.b_sliced_threads || pass == 1) )
1948         x264_frame_expand_border( h, h->fdec, min_y );
1949     if( b_hpel )
1950     {
1951         int end = mb_y == h->mb.i_mb_height;
1952         /* Can't do hpel until the previous slice is done encoding. */
1953         if( h->param.analyse.i_subpel_refine )
1954         {
1955             x264_frame_filter( h, h->fdec, min_y, end );
1956             x264_frame_expand_border_filtered( h, h->fdec, min_y, end );
1957         }
1958     }
1959
1960     if( SLICE_MBAFF && pass == 0 )
1961         for( int i = 0; i < 3; i++ )
1962         {
1963             XCHG( pixel *, h->intra_border_backup[0][i], h->intra_border_backup[3][i] );
1964             XCHG( pixel *, h->intra_border_backup[1][i], h->intra_border_backup[4][i] );
1965         }
1966
1967     if( h->i_thread_frames > 1 && h->fdec->b_kept_as_ref )
1968         x264_frame_cond_broadcast( h->fdec, mb_y*16 + (b_end ? 10000 : -(X264_THREAD_HEIGHT << SLICE_MBAFF)) );
1969
1970     if( b_measure_quality )
1971     {
1972         maxpix_y = X264_MIN( maxpix_y, h->param.i_height );
1973         if( h->param.analyse.b_psnr )
1974         {
1975             for( int p = 0; p < (CHROMA444 ? 3 : 1); p++ )
1976                 h->stat.frame.i_ssd[p] += x264_pixel_ssd_wxh( &h->pixf,
1977                     h->fdec->plane[p] + minpix_y * h->fdec->i_stride[p], h->fdec->i_stride[p],
1978                     h->fenc->plane[p] + minpix_y * h->fenc->i_stride[p], h->fenc->i_stride[p],
1979                     h->param.i_width, maxpix_y-minpix_y );
1980             if( !CHROMA444 )
1981             {
1982                 uint64_t ssd_u, ssd_v;
1983                 int v_shift = CHROMA_V_SHIFT;
1984                 x264_pixel_ssd_nv12( &h->pixf,
1985                     h->fdec->plane[1] + (minpix_y>>v_shift) * h->fdec->i_stride[1], h->fdec->i_stride[1],
1986                     h->fenc->plane[1] + (minpix_y>>v_shift) * h->fenc->i_stride[1], h->fenc->i_stride[1],
1987                     h->param.i_width>>1, (maxpix_y-minpix_y)>>v_shift, &ssd_u, &ssd_v );
1988                 h->stat.frame.i_ssd[1] += ssd_u;
1989                 h->stat.frame.i_ssd[2] += ssd_v;
1990             }
1991         }
1992
1993         if( h->param.analyse.b_ssim )
1994         {
1995             int ssim_cnt;
1996             x264_emms();
1997             /* offset by 2 pixels to avoid alignment of ssim blocks with dct blocks,
1998              * and overlap by 4 */
1999             minpix_y += b_start ? 2 : -6;
2000             h->stat.frame.f_ssim +=
2001                 x264_pixel_ssim_wxh( &h->pixf,
2002                     h->fdec->plane[0] + 2+minpix_y*h->fdec->i_stride[0], h->fdec->i_stride[0],
2003                     h->fenc->plane[0] + 2+minpix_y*h->fenc->i_stride[0], h->fenc->i_stride[0],
2004                     h->param.i_width-2, maxpix_y-minpix_y, h->scratch_buffer, &ssim_cnt );
2005             h->stat.frame.i_ssim_cnt += ssim_cnt;
2006         }
2007     }
2008 }
2009
2010 static inline int x264_reference_update( x264_t *h )
2011 {
2012     if( !h->fdec->b_kept_as_ref )
2013     {
2014         if( h->i_thread_frames > 1 )
2015         {
2016             x264_frame_push_unused( h, h->fdec );
2017             h->fdec = x264_frame_pop_unused( h, 1 );
2018             if( !h->fdec )
2019                 return -1;
2020         }
2021         return 0;
2022     }
2023
2024     /* apply mmco from previous frame. */
2025     for( int i = 0; i < h->sh.i_mmco_command_count; i++ )
2026         for( int j = 0; h->frames.reference[j]; j++ )
2027             if( h->frames.reference[j]->i_poc == h->sh.mmco[i].i_poc )
2028                 x264_frame_push_unused( h, x264_frame_shift( &h->frames.reference[j] ) );
2029
2030     /* move frame in the buffer */
2031     x264_frame_push( h->frames.reference, h->fdec );
2032     if( h->frames.reference[h->sps->i_num_ref_frames] )
2033         x264_frame_push_unused( h, x264_frame_shift( h->frames.reference ) );
2034     h->fdec = x264_frame_pop_unused( h, 1 );
2035     if( !h->fdec )
2036         return -1;
2037     return 0;
2038 }
2039
2040 static inline void x264_reference_reset( x264_t *h )
2041 {
2042     while( h->frames.reference[0] )
2043         x264_frame_push_unused( h, x264_frame_pop( h->frames.reference ) );
2044     h->fdec->i_poc =
2045     h->fenc->i_poc = 0;
2046 }
2047
2048 static inline void x264_reference_hierarchy_reset( x264_t *h )
2049 {
2050     int ref;
2051     int b_hasdelayframe = 0;
2052
2053     /* look for delay frames -- chain must only contain frames that are disposable */
2054     for( int i = 0; h->frames.current[i] && IS_DISPOSABLE( h->frames.current[i]->i_type ); i++ )
2055         b_hasdelayframe |= h->frames.current[i]->i_coded
2056                         != h->frames.current[i]->i_frame + h->sps->vui.i_num_reorder_frames;
2057
2058     /* This function must handle b-pyramid and clear frames for open-gop */
2059     if( h->param.i_bframe_pyramid != X264_B_PYRAMID_STRICT && !b_hasdelayframe && h->frames.i_poc_last_open_gop == -1 )
2060         return;
2061
2062     /* Remove last BREF. There will never be old BREFs in the
2063      * dpb during a BREF decode when pyramid == STRICT */
2064     for( ref = 0; h->frames.reference[ref]; ref++ )
2065     {
2066         if( ( h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT
2067             && h->frames.reference[ref]->i_type == X264_TYPE_BREF )
2068             || ( h->frames.reference[ref]->i_poc < h->frames.i_poc_last_open_gop
2069             && h->sh.i_type != SLICE_TYPE_B ) )
2070         {
2071             int diff = h->i_frame_num - h->frames.reference[ref]->i_frame_num;
2072             h->sh.mmco[h->sh.i_mmco_command_count].i_difference_of_pic_nums = diff;
2073             h->sh.mmco[h->sh.i_mmco_command_count++].i_poc = h->frames.reference[ref]->i_poc;
2074             x264_frame_push_unused( h, x264_frame_shift( &h->frames.reference[ref] ) );
2075             h->b_ref_reorder[0] = 1;
2076             ref--;
2077         }
2078     }
2079
2080     /* Prepare room in the dpb for the delayed display time of the later b-frame's */
2081     if( h->param.i_bframe_pyramid )
2082         h->sh.i_mmco_remove_from_end = X264_MAX( ref + 2 - h->frames.i_max_dpb, 0 );
2083 }
2084
2085 static inline void x264_slice_init( x264_t *h, int i_nal_type, int i_global_qp )
2086 {
2087     /* ------------------------ Create slice header  ----------------------- */
2088     if( i_nal_type == NAL_SLICE_IDR )
2089     {
2090         x264_slice_header_init( h, &h->sh, h->sps, h->pps, h->i_idr_pic_id, h->i_frame_num, i_global_qp );
2091
2092         /* alternate id */
2093         h->i_idr_pic_id ^= 1;
2094     }
2095     else
2096     {
2097         x264_slice_header_init( h, &h->sh, h->sps, h->pps, -1, h->i_frame_num, i_global_qp );
2098
2099         h->sh.i_num_ref_idx_l0_active = h->i_ref[0] <= 0 ? 1 : h->i_ref[0];
2100         h->sh.i_num_ref_idx_l1_active = h->i_ref[1] <= 0 ? 1 : h->i_ref[1];
2101         if( h->sh.i_num_ref_idx_l0_active != h->pps->i_num_ref_idx_l0_default_active ||
2102             (h->sh.i_type == SLICE_TYPE_B && h->sh.i_num_ref_idx_l1_active != h->pps->i_num_ref_idx_l1_default_active) )
2103         {
2104             h->sh.b_num_ref_idx_override = 1;
2105         }
2106     }
2107
2108     if( h->fenc->i_type == X264_TYPE_BREF && h->param.b_bluray_compat && h->sh.i_mmco_command_count )
2109     {
2110         h->b_sh_backup = 1;
2111         h->sh_backup = h->sh;
2112     }
2113
2114     h->fdec->i_frame_num = h->sh.i_frame_num;
2115
2116     if( h->sps->i_poc_type == 0 )
2117     {
2118         h->sh.i_poc = h->fdec->i_poc;
2119         if( PARAM_INTERLACED )
2120         {
2121             h->sh.i_delta_poc_bottom = h->param.b_tff ? 1 : -1;
2122             h->sh.i_poc += h->sh.i_delta_poc_bottom == -1;
2123         }
2124         else
2125             h->sh.i_delta_poc_bottom = 0;
2126         h->fdec->i_delta_poc[0] = h->sh.i_delta_poc_bottom == -1;
2127         h->fdec->i_delta_poc[1] = h->sh.i_delta_poc_bottom ==  1;
2128     }
2129     else
2130     {
2131         /* Nothing to do ? */
2132     }
2133
2134     x264_macroblock_slice_init( h );
2135 }
2136
2137 typedef struct
2138 {
2139     int skip;
2140     uint8_t cabac_prevbyte;
2141     bs_t bs;
2142     x264_cabac_t cabac;
2143     x264_frame_stat_t stat;
2144     int last_qp;
2145     int last_dqp;
2146     int field_decoding_flag;
2147 } x264_bs_bak_t;
2148
2149 static ALWAYS_INLINE void x264_bitstream_backup( x264_t *h, x264_bs_bak_t *bak, int i_skip, int full )
2150 {
2151     if( full )
2152     {
2153         bak->stat = h->stat.frame;
2154         bak->last_qp = h->mb.i_last_qp;
2155         bak->last_dqp = h->mb.i_last_dqp;
2156         bak->field_decoding_flag = h->mb.field_decoding_flag;
2157     }
2158     else
2159     {
2160         bak->stat.i_mv_bits = h->stat.frame.i_mv_bits;
2161         bak->stat.i_tex_bits = h->stat.frame.i_tex_bits;
2162     }
2163     /* In the per-MB backup, we don't need the contexts because flushing the CABAC
2164      * encoder has no context dependency and in this case, a slice is ended (and
2165      * thus the content of all contexts are thrown away). */
2166     if( h->param.b_cabac )
2167     {
2168         if( full )
2169             memcpy( &bak->cabac, &h->cabac, sizeof(x264_cabac_t) );
2170         else
2171             memcpy( &bak->cabac, &h->cabac, offsetof(x264_cabac_t, f8_bits_encoded) );
2172         /* x264's CABAC writer modifies the previous byte during carry, so it has to be
2173          * backed up. */
2174         bak->cabac_prevbyte = h->cabac.p[-1];
2175     }
2176     else
2177     {
2178         bak->bs = h->out.bs;
2179         bak->skip = i_skip;
2180     }
2181 }
2182
2183 static ALWAYS_INLINE void x264_bitstream_restore( x264_t *h, x264_bs_bak_t *bak, int *skip, int full )
2184 {
2185     if( full )
2186     {
2187         h->stat.frame = bak->stat;
2188         h->mb.i_last_qp = bak->last_qp;
2189         h->mb.i_last_dqp = bak->last_dqp;
2190         h->mb.field_decoding_flag = bak->field_decoding_flag;
2191     }
2192     else
2193     {
2194         h->stat.frame.i_mv_bits = bak->stat.i_mv_bits;
2195         h->stat.frame.i_tex_bits = bak->stat.i_tex_bits;
2196     }
2197     if( h->param.b_cabac )
2198     {
2199         if( full )
2200             memcpy( &h->cabac, &bak->cabac, sizeof(x264_cabac_t) );
2201         else
2202             memcpy( &h->cabac, &bak->cabac, offsetof(x264_cabac_t, f8_bits_encoded) );
2203         h->cabac.p[-1] = bak->cabac_prevbyte;
2204     }
2205     else
2206     {
2207         h->out.bs = bak->bs;
2208         *skip = bak->skip;
2209     }
2210 }
2211
2212 static int x264_slice_write( x264_t *h )
2213 {
2214     int i_skip;
2215     int mb_xy, i_mb_x, i_mb_y;
2216     /* NALUs other than the first use a 3-byte startcode.
2217      * Add one extra byte for the rbsp, and one more for the final CABAC putbyte.
2218      * Then add an extra 5 bytes just in case, to account for random NAL escapes and
2219      * other inaccuracies. */
2220     int overhead_guess = (NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal)) + 1 + h->param.b_cabac + 5;
2221     int slice_max_size = h->param.i_slice_max_size > 0 ? (h->param.i_slice_max_size-overhead_guess)*8 : 0;
2222     int back_up_bitstream = slice_max_size || (!h->param.b_cabac && h->sps->i_profile_idc < PROFILE_HIGH);
2223     int starting_bits = bs_pos(&h->out.bs);
2224     int b_deblock = h->sh.i_disable_deblocking_filter_idc != 1;
2225     int b_hpel = h->fdec->b_kept_as_ref;
2226     int orig_last_mb = h->sh.i_last_mb;
2227     uint8_t *last_emu_check;
2228     x264_bs_bak_t bs_bak[2];
2229     b_deblock &= b_hpel || h->param.b_full_recon || h->param.psz_dump_yuv;
2230     bs_realign( &h->out.bs );
2231
2232     /* Slice */
2233     x264_nal_start( h, h->i_nal_type, h->i_nal_ref_idc );
2234     h->out.nal[h->out.i_nal].i_first_mb = h->sh.i_first_mb;
2235
2236     /* Slice header */
2237     x264_macroblock_thread_init( h );
2238
2239     /* Set the QP equal to the first QP in the slice for more accurate CABAC initialization. */
2240     h->mb.i_mb_xy = h->sh.i_first_mb;
2241     h->sh.i_qp = x264_ratecontrol_mb_qp( h );
2242     h->sh.i_qp = SPEC_QP( h->sh.i_qp );
2243     h->sh.i_qp_delta = h->sh.i_qp - h->pps->i_pic_init_qp;
2244
2245     x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
2246     if( h->param.b_cabac )
2247     {
2248         /* alignment needed */
2249         bs_align_1( &h->out.bs );
2250
2251         /* init cabac */
2252         x264_cabac_context_init( h, &h->cabac, h->sh.i_type, x264_clip3( h->sh.i_qp-QP_BD_OFFSET, 0, 51 ), h->sh.i_cabac_init_idc );
2253         x264_cabac_encode_init ( &h->cabac, h->out.bs.p, h->out.bs.p_end );
2254         last_emu_check = h->cabac.p;
2255     }
2256     else
2257         last_emu_check = h->out.bs.p;
2258     h->mb.i_last_qp = h->sh.i_qp;
2259     h->mb.i_last_dqp = 0;
2260     h->mb.field_decoding_flag = 0;
2261
2262     i_mb_y = h->sh.i_first_mb / h->mb.i_mb_width;
2263     i_mb_x = h->sh.i_first_mb % h->mb.i_mb_width;
2264     i_skip = 0;
2265
2266     while( 1 )
2267     {
2268         mb_xy = i_mb_x + i_mb_y * h->mb.i_mb_width;
2269         int mb_spos = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2270
2271         if( i_mb_x == 0 )
2272         {
2273             if( x264_bitstream_check_buffer( h ) )
2274                 return -1;
2275             if( !(i_mb_y & SLICE_MBAFF) && h->param.rc.i_vbv_buffer_size )
2276                 x264_bitstream_backup( h, &bs_bak[1], i_skip, 1 );
2277             if( !h->mb.b_reencode_mb )
2278                 x264_fdec_filter_row( h, i_mb_y, 0 );
2279         }
2280
2281         if( !(i_mb_y & SLICE_MBAFF) && back_up_bitstream )
2282             x264_bitstream_backup( h, &bs_bak[0], i_skip, 0 );
2283
2284         if( PARAM_INTERLACED )
2285         {
2286             if( h->mb.b_adaptive_mbaff )
2287             {
2288                 if( !(i_mb_y&1) )
2289                 {
2290                     /* FIXME: VSAD is fast but fairly poor at choosing the best interlace type. */
2291                     h->mb.b_interlaced = x264_field_vsad( h, i_mb_x, i_mb_y );
2292                     memcpy( &h->zigzagf, MB_INTERLACED ? &h->zigzagf_interlaced : &h->zigzagf_progressive, sizeof(h->zigzagf) );
2293                     if( !MB_INTERLACED && (i_mb_y+2) == h->mb.i_mb_height )
2294                         x264_expand_border_mbpair( h, i_mb_x, i_mb_y );
2295                 }
2296             }
2297             h->mb.field[mb_xy] = MB_INTERLACED;
2298         }
2299
2300         /* load cache */
2301         if( SLICE_MBAFF )
2302             x264_macroblock_cache_load_interlaced( h, i_mb_x, i_mb_y );
2303         else
2304             x264_macroblock_cache_load_progressive( h, i_mb_x, i_mb_y );
2305
2306         x264_macroblock_analyse( h );
2307
2308         /* encode this macroblock -> be careful it can change the mb type to P_SKIP if needed */
2309 reencode:
2310         x264_macroblock_encode( h );
2311
2312         if( h->param.b_cabac )
2313         {
2314             if( mb_xy > h->sh.i_first_mb && !(SLICE_MBAFF && (i_mb_y&1)) )
2315                 x264_cabac_encode_terminal( &h->cabac );
2316
2317             if( IS_SKIP( h->mb.i_type ) )
2318                 x264_cabac_mb_skip( h, 1 );
2319             else
2320             {
2321                 if( h->sh.i_type != SLICE_TYPE_I )
2322                     x264_cabac_mb_skip( h, 0 );
2323                 x264_macroblock_write_cabac( h, &h->cabac );
2324             }
2325         }
2326         else
2327         {
2328             if( IS_SKIP( h->mb.i_type ) )
2329                 i_skip++;
2330             else
2331             {
2332                 if( h->sh.i_type != SLICE_TYPE_I )
2333                 {
2334                     bs_write_ue( &h->out.bs, i_skip );  /* skip run */
2335                     i_skip = 0;
2336                 }
2337                 x264_macroblock_write_cavlc( h );
2338                 /* If there was a CAVLC level code overflow, try again at a higher QP. */
2339                 if( h->mb.b_overflow )
2340                 {
2341                     h->mb.i_chroma_qp = h->chroma_qp_table[++h->mb.i_qp];
2342                     h->mb.i_skip_intra = 0;
2343                     h->mb.b_skip_mc = 0;
2344                     h->mb.b_overflow = 0;
2345                     x264_bitstream_restore( h, &bs_bak[0], &i_skip, 0 );
2346                     goto reencode;
2347                 }
2348             }
2349         }
2350
2351         int total_bits = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2352         int mb_size = total_bits - mb_spos;
2353
2354         if( slice_max_size && (!SLICE_MBAFF || (i_mb_y&1)) )
2355         {
2356             /* Count the skip run, just in case. */
2357             if( !h->param.b_cabac )
2358                 total_bits += bs_size_ue_big( i_skip );
2359             /* Check for escape bytes. */
2360             uint8_t *end = h->param.b_cabac ? h->cabac.p : h->out.bs.p;
2361             for( ; last_emu_check < end - 2; last_emu_check++ )
2362                 if( last_emu_check[0] == 0 && last_emu_check[1] == 0 && last_emu_check[2] <= 3 )
2363                 {
2364                     slice_max_size -= 8;
2365                     last_emu_check++;
2366                 }
2367             /* We'll just re-encode this last macroblock if we go over the max slice size. */
2368             if( total_bits - starting_bits > slice_max_size && !h->mb.b_reencode_mb )
2369             {
2370                 if( mb_xy-SLICE_MBAFF*h->mb.i_mb_stride != h->sh.i_first_mb )
2371                 {
2372                     x264_bitstream_restore( h, &bs_bak[0], &i_skip, 0 );
2373                     h->mb.b_reencode_mb = 1;
2374                     if( SLICE_MBAFF )
2375                     {
2376                         // set to bottom of previous mbpair
2377                         if( i_mb_x )
2378                             h->sh.i_last_mb = mb_xy-1+h->mb.i_mb_stride*(!(i_mb_y&1));
2379                         else
2380                             h->sh.i_last_mb = (i_mb_y-2+!(i_mb_y&1))*h->mb.i_mb_stride + h->mb.i_mb_width - 1;
2381                     }
2382                     else
2383                         h->sh.i_last_mb = mb_xy-1;
2384                     break;
2385                 }
2386                 else
2387                     h->sh.i_last_mb = mb_xy;
2388             }
2389         }
2390         h->mb.b_reencode_mb = 0;
2391
2392 #if HAVE_VISUALIZE
2393         if( h->param.b_visualize )
2394             x264_visualize_mb( h );
2395 #endif
2396
2397         /* save cache */
2398         x264_macroblock_cache_save( h );
2399
2400         if( x264_ratecontrol_mb( h, mb_size ) < 0 )
2401         {
2402             x264_bitstream_restore( h, &bs_bak[1], &i_skip, 1 );
2403             h->mb.b_reencode_mb = 1;
2404             i_mb_x = 0;
2405             i_mb_y = i_mb_y - SLICE_MBAFF;
2406             h->mb.i_mb_prev_xy = i_mb_y * h->mb.i_mb_stride - 1;
2407             h->sh.i_last_mb = orig_last_mb;
2408             continue;
2409         }
2410
2411         /* accumulate mb stats */
2412         h->stat.frame.i_mb_count[h->mb.i_type]++;
2413
2414         int b_intra = IS_INTRA( h->mb.i_type );
2415         int b_skip = IS_SKIP( h->mb.i_type );
2416         if( h->param.i_log_level >= X264_LOG_INFO || h->param.rc.b_stat_write )
2417         {
2418             if( !b_intra && !b_skip && !IS_DIRECT( h->mb.i_type ) )
2419             {
2420                 if( h->mb.i_partition != D_8x8 )
2421                         h->stat.frame.i_mb_partition[h->mb.i_partition] += 4;
2422                     else
2423                         for( int i = 0; i < 4; i++ )
2424                             h->stat.frame.i_mb_partition[h->mb.i_sub_partition[i]] ++;
2425                 if( h->param.i_frame_reference > 1 )
2426                     for( int i_list = 0; i_list <= (h->sh.i_type == SLICE_TYPE_B); i_list++ )
2427                         for( int i = 0; i < 4; i++ )
2428                         {
2429                             int i_ref = h->mb.cache.ref[i_list][ x264_scan8[4*i] ];
2430                             if( i_ref >= 0 )
2431                                 h->stat.frame.i_mb_count_ref[i_list][i_ref] ++;
2432                         }
2433             }
2434         }
2435
2436         if( h->param.i_log_level >= X264_LOG_INFO )
2437         {
2438             if( h->mb.i_cbp_luma | h->mb.i_cbp_chroma )
2439             {
2440                 if( CHROMA444 )
2441                 {
2442                     for( int i = 0; i < 4; i++ )
2443                         if( h->mb.i_cbp_luma & (1 << i) )
2444                             for( int p = 0; p < 3; p++ )
2445                             {
2446                                 int s8 = i*4+p*16;
2447                                 int nnz8x8 = M16( &h->mb.cache.non_zero_count[x264_scan8[s8]+0] )
2448                                            | M16( &h->mb.cache.non_zero_count[x264_scan8[s8]+8] );
2449                                 h->stat.frame.i_mb_cbp[!b_intra + p*2] += !!nnz8x8;
2450                             }
2451                 }
2452                 else
2453                 {
2454                     int cbpsum = (h->mb.i_cbp_luma&1) + ((h->mb.i_cbp_luma>>1)&1)
2455                                + ((h->mb.i_cbp_luma>>2)&1) + (h->mb.i_cbp_luma>>3);
2456                     h->stat.frame.i_mb_cbp[!b_intra + 0] += cbpsum;
2457                     h->stat.frame.i_mb_cbp[!b_intra + 2] += !!h->mb.i_cbp_chroma;
2458                     h->stat.frame.i_mb_cbp[!b_intra + 4] += h->mb.i_cbp_chroma >> 1;
2459                 }
2460             }
2461             if( h->mb.i_cbp_luma && !b_intra )
2462             {
2463                 h->stat.frame.i_mb_count_8x8dct[0] ++;
2464                 h->stat.frame.i_mb_count_8x8dct[1] += h->mb.b_transform_8x8;
2465             }
2466             if( b_intra && h->mb.i_type != I_PCM )
2467             {
2468                 if( h->mb.i_type == I_16x16 )
2469                     h->stat.frame.i_mb_pred_mode[0][h->mb.i_intra16x16_pred_mode]++;
2470                 else if( h->mb.i_type == I_8x8 )
2471                     for( int i = 0; i < 16; i += 4 )
2472                         h->stat.frame.i_mb_pred_mode[1][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2473                 else //if( h->mb.i_type == I_4x4 )
2474                     for( int i = 0; i < 16; i++ )
2475                         h->stat.frame.i_mb_pred_mode[2][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2476                 h->stat.frame.i_mb_pred_mode[3][x264_mb_chroma_pred_mode_fix[h->mb.i_chroma_pred_mode]]++;
2477             }
2478             h->stat.frame.i_mb_field[b_intra?0:b_skip?2:1] += MB_INTERLACED;
2479         }
2480
2481         /* calculate deblock strength values (actual deblocking is done per-row along with hpel) */
2482         if( b_deblock )
2483             x264_macroblock_deblock_strength( h );
2484
2485         if( mb_xy == h->sh.i_last_mb )
2486             break;
2487
2488         if( SLICE_MBAFF )
2489         {
2490             i_mb_x += i_mb_y & 1;
2491             i_mb_y ^= i_mb_x < h->mb.i_mb_width;
2492         }
2493         else
2494             i_mb_x++;
2495         if( i_mb_x == h->mb.i_mb_width )
2496         {
2497             i_mb_y++;
2498             i_mb_x = 0;
2499         }
2500     }
2501     h->out.nal[h->out.i_nal].i_last_mb = h->sh.i_last_mb;
2502
2503     if( h->param.b_cabac )
2504     {
2505         x264_cabac_encode_flush( h, &h->cabac );
2506         h->out.bs.p = h->cabac.p;
2507     }
2508     else
2509     {
2510         if( i_skip > 0 )
2511             bs_write_ue( &h->out.bs, i_skip );  /* last skip run */
2512         /* rbsp_slice_trailing_bits */
2513         bs_rbsp_trailing( &h->out.bs );
2514         bs_flush( &h->out.bs );
2515     }
2516     if( x264_nal_end( h ) )
2517         return -1;
2518
2519     if( h->sh.i_last_mb == (h->i_threadslice_end * h->mb.i_mb_width - 1) )
2520     {
2521         h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
2522                                   + (h->out.i_nal*NALU_OVERHEAD * 8)
2523                                   - h->stat.frame.i_tex_bits
2524                                   - h->stat.frame.i_mv_bits;
2525         x264_fdec_filter_row( h, h->i_threadslice_end, 0 );
2526
2527         if( h->param.b_sliced_threads )
2528         {
2529             /* Tell the main thread we're done. */
2530             x264_threadslice_cond_broadcast( h, 1 );
2531             /* Do hpel now */
2532             for( int mb_y = h->i_threadslice_start; mb_y <= h->i_threadslice_end; mb_y++ )
2533                 x264_fdec_filter_row( h, mb_y, 1 );
2534             x264_threadslice_cond_broadcast( h, 2 );
2535             /* Do the first row of hpel, now that the previous slice is done */
2536             if( h->i_thread_idx > 0 )
2537             {
2538                 x264_threadslice_cond_wait( h->thread[h->i_thread_idx-1], 2 );
2539                 x264_fdec_filter_row( h, h->i_threadslice_start + (1 << SLICE_MBAFF), 2 );
2540             }
2541         }
2542
2543         /* Free mb info after the last thread's done using it */
2544         if( h->fdec->mb_info_free && (!h->param.b_sliced_threads || h->i_thread_idx == (h->param.i_threads-1)) )
2545         {
2546             h->fdec->mb_info_free( h->fdec->mb_info );
2547             h->fdec->mb_info = NULL;
2548             h->fdec->mb_info_free = NULL;
2549         }
2550     }
2551
2552     return 0;
2553 }
2554
2555 static void x264_thread_sync_context( x264_t *dst, x264_t *src )
2556 {
2557     if( dst == src )
2558         return;
2559
2560     // reference counting
2561     for( x264_frame_t **f = src->frames.reference; *f; f++ )
2562         (*f)->i_reference_count++;
2563     for( x264_frame_t **f = dst->frames.reference; *f; f++ )
2564         x264_frame_push_unused( src, *f );
2565     src->fdec->i_reference_count++;
2566     x264_frame_push_unused( src, dst->fdec );
2567
2568     // copy everything except the per-thread pointers and the constants.
2569     memcpy( &dst->i_frame, &src->i_frame, offsetof(x264_t, mb.type) - offsetof(x264_t, i_frame) );
2570     dst->param = src->param;
2571     dst->stat = src->stat;
2572     dst->pixf = src->pixf;
2573 }
2574
2575 static void x264_thread_sync_stat( x264_t *dst, x264_t *src )
2576 {
2577     if( dst == src )
2578         return;
2579     memcpy( &dst->stat.i_frame_count, &src->stat.i_frame_count, sizeof(dst->stat) - sizeof(dst->stat.frame) );
2580 }
2581
2582 static void *x264_slices_write( x264_t *h )
2583 {
2584     int i_slice_num = 0;
2585     int last_thread_mb = h->sh.i_last_mb;
2586
2587 #if HAVE_VISUALIZE
2588     if( h->param.b_visualize )
2589         if( x264_visualize_init( h ) )
2590             goto fail;
2591 #endif
2592
2593     /* init stats */
2594     memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
2595     h->mb.b_reencode_mb = 0;
2596     while( h->sh.i_first_mb + SLICE_MBAFF*h->mb.i_mb_stride <= last_thread_mb )
2597     {
2598         h->sh.i_last_mb = last_thread_mb;
2599         if( h->param.i_slice_max_mbs )
2600         {
2601             if( SLICE_MBAFF )
2602             {
2603                 // convert first to mbaff form, add slice-max-mbs, then convert back to normal form
2604                 int last_mbaff = 2*(h->sh.i_first_mb % h->mb.i_mb_width)
2605                     + h->mb.i_mb_width*(h->sh.i_first_mb / h->mb.i_mb_width)
2606                     + h->param.i_slice_max_mbs - 1;
2607                 int last_x = (last_mbaff % (2*h->mb.i_mb_width))/2;
2608                 int last_y = (last_mbaff / (2*h->mb.i_mb_width))*2 + 1;
2609                 h->sh.i_last_mb = last_x + h->mb.i_mb_stride*last_y;
2610             }
2611             else
2612                 h->sh.i_last_mb = h->sh.i_first_mb + h->param.i_slice_max_mbs - 1;
2613         }
2614         else if( h->param.i_slice_count && !h->param.b_sliced_threads )
2615         {
2616             int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2617             int width = h->mb.i_mb_width << PARAM_INTERLACED;
2618             i_slice_num++;
2619             h->sh.i_last_mb = (height * i_slice_num + h->param.i_slice_count/2) / h->param.i_slice_count * width - 1;
2620         }
2621         h->sh.i_last_mb = X264_MIN( h->sh.i_last_mb, last_thread_mb );
2622         if( x264_stack_align( x264_slice_write, h ) )
2623             goto fail;
2624         h->sh.i_first_mb = h->sh.i_last_mb + 1;
2625         // if i_first_mb is not the last mb in a row then go to the next mb in MBAFF order
2626         if( SLICE_MBAFF && h->sh.i_first_mb % h->mb.i_mb_width )
2627             h->sh.i_first_mb -= h->mb.i_mb_stride;
2628     }
2629
2630 #if HAVE_VISUALIZE
2631     if( h->param.b_visualize )
2632     {
2633         x264_visualize_show( h );
2634         x264_visualize_close( h );
2635     }
2636 #endif
2637
2638     return (void *)0;
2639
2640 fail:
2641     /* Tell other threads we're done, so they wouldn't wait for it */
2642     if( h->param.b_sliced_threads )
2643         x264_threadslice_cond_broadcast( h, 2 );
2644     return (void *)-1;
2645 }
2646
2647 static int x264_threaded_slices_write( x264_t *h )
2648 {
2649     /* set first/last mb and sync contexts */
2650     for( int i = 0; i < h->param.i_threads; i++ )
2651     {
2652         x264_t *t = h->thread[i];
2653         if( i )
2654         {
2655             t->param = h->param;
2656             memcpy( &t->i_frame, &h->i_frame, offsetof(x264_t, rc) - offsetof(x264_t, i_frame) );
2657         }
2658         int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2659         t->i_threadslice_start = ((height *  i    + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2660         t->i_threadslice_end   = ((height * (i+1) + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2661         t->sh.i_first_mb = t->i_threadslice_start * h->mb.i_mb_width;
2662         t->sh.i_last_mb  =   t->i_threadslice_end * h->mb.i_mb_width - 1;
2663     }
2664
2665     x264_stack_align( x264_analyse_weight_frame, h, h->mb.i_mb_height*16 + 16 );
2666
2667     x264_threads_distribute_ratecontrol( h );
2668
2669     /* setup */
2670     for( int i = 0; i < h->param.i_threads; i++ )
2671     {
2672         h->thread[i]->i_thread_idx = i;
2673         h->thread[i]->b_thread_active = 1;
2674         x264_threadslice_cond_broadcast( h->thread[i], 0 );
2675     }
2676     /* dispatch */
2677     for( int i = 0; i < h->param.i_threads; i++ )
2678         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h->thread[i] );
2679     /* wait */
2680     for( int i = 0; i < h->param.i_threads; i++ )
2681         x264_threadslice_cond_wait( h->thread[i], 1 );
2682
2683     x264_threads_merge_ratecontrol( h );
2684
2685     for( int i = 1; i < h->param.i_threads; i++ )
2686     {
2687         x264_t *t = h->thread[i];
2688         for( int j = 0; j < t->out.i_nal; j++ )
2689         {
2690             h->out.nal[h->out.i_nal] = t->out.nal[j];
2691             h->out.i_nal++;
2692             x264_nal_check_buffer( h );
2693         }
2694         /* All entries in stat.frame are ints except for ssd/ssim. */
2695         for( int j = 0; j < (offsetof(x264_t,stat.frame.i_ssd) - offsetof(x264_t,stat.frame.i_mv_bits)) / sizeof(int); j++ )
2696             ((int*)&h->stat.frame)[j] += ((int*)&t->stat.frame)[j];
2697         for( int j = 0; j < 3; j++ )
2698             h->stat.frame.i_ssd[j] += t->stat.frame.i_ssd[j];
2699         h->stat.frame.f_ssim += t->stat.frame.f_ssim;
2700         h->stat.frame.i_ssim_cnt += t->stat.frame.i_ssim_cnt;
2701     }
2702
2703     return 0;
2704 }
2705
2706 void x264_encoder_intra_refresh( x264_t *h )
2707 {
2708     h = h->thread[h->i_thread_phase];
2709     h->b_queued_intra_refresh = 1;
2710 }
2711
2712 int x264_encoder_invalidate_reference( x264_t *h, int64_t pts )
2713 {
2714     if( h->param.i_bframe )
2715     {
2716         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with B-frames enabled\n" );
2717         return -1;
2718     }
2719     if( h->param.b_intra_refresh )
2720     {
2721         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with intra refresh enabled\n" );
2722         return -1;
2723     }
2724     h = h->thread[h->i_thread_phase];
2725     if( pts >= h->i_last_idr_pts )
2726     {
2727         for( int i = 0; h->frames.reference[i]; i++ )
2728             if( pts <= h->frames.reference[i]->i_pts )
2729                 h->frames.reference[i]->b_corrupt = 1;
2730         if( pts <= h->fdec->i_pts )
2731             h->fdec->b_corrupt = 1;
2732     }
2733     return 0;
2734 }
2735
2736 /****************************************************************************
2737  * x264_encoder_encode:
2738  *  XXX: i_poc   : is the poc of the current given picture
2739  *       i_frame : is the number of the frame being coded
2740  *  ex:  type frame poc
2741  *       I      0   2*0
2742  *       P      1   2*3
2743  *       B      2   2*1
2744  *       B      3   2*2
2745  *       P      4   2*6
2746  *       B      5   2*4
2747  *       B      6   2*5
2748  ****************************************************************************/
2749 int     x264_encoder_encode( x264_t *h,
2750                              x264_nal_t **pp_nal, int *pi_nal,
2751                              x264_picture_t *pic_in,
2752                              x264_picture_t *pic_out )
2753 {
2754     x264_t *thread_current, *thread_prev, *thread_oldest;
2755     int i_nal_type, i_nal_ref_idc, i_global_qp;
2756     int overhead = NALU_OVERHEAD;
2757
2758     if( h->i_thread_frames > 1 )
2759     {
2760         thread_prev    = h->thread[ h->i_thread_phase ];
2761         h->i_thread_phase = (h->i_thread_phase + 1) % h->i_thread_frames;
2762         thread_current = h->thread[ h->i_thread_phase ];
2763         thread_oldest  = h->thread[ (h->i_thread_phase + 1) % h->i_thread_frames ];
2764         x264_thread_sync_context( thread_current, thread_prev );
2765         x264_thread_sync_ratecontrol( thread_current, thread_prev, thread_oldest );
2766         h = thread_current;
2767     }
2768     else
2769     {
2770         thread_current =
2771         thread_oldest  = h;
2772     }
2773 #if HAVE_MMX
2774     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
2775         x264_cpu_mask_misalign_sse();
2776 #endif
2777     h->i_cpb_delay_pir_offset = h->i_cpb_delay_pir_offset_next;
2778
2779     /* no data out */
2780     *pi_nal = 0;
2781     *pp_nal = NULL;
2782
2783     /* ------------------- Setup new frame from picture -------------------- */
2784     if( pic_in != NULL )
2785     {
2786         /* 1: Copy the picture to a frame and move it to a buffer */
2787         x264_frame_t *fenc = x264_frame_pop_unused( h, 0 );
2788         if( !fenc )
2789             return -1;
2790
2791         if( x264_frame_copy_picture( h, fenc, pic_in ) < 0 )
2792             return -1;
2793
2794         if( h->param.i_width != 16 * h->mb.i_mb_width ||
2795             h->param.i_height != 16 * h->mb.i_mb_height )
2796             x264_frame_expand_border_mod16( h, fenc );
2797
2798         fenc->i_frame = h->frames.i_input++;
2799
2800         if( fenc->i_frame == 0 )
2801             h->frames.i_first_pts = fenc->i_pts;
2802         if( h->frames.i_bframe_delay && fenc->i_frame == h->frames.i_bframe_delay )
2803             h->frames.i_bframe_delay_time = fenc->i_pts - h->frames.i_first_pts;
2804
2805         if( h->param.b_vfr_input && fenc->i_pts <= h->frames.i_largest_pts )
2806             x264_log( h, X264_LOG_WARNING, "non-strictly-monotonic PTS\n" );
2807
2808         h->frames.i_second_largest_pts = h->frames.i_largest_pts;
2809         h->frames.i_largest_pts = fenc->i_pts;
2810
2811         if( (fenc->i_pic_struct < PIC_STRUCT_AUTO) || (fenc->i_pic_struct > PIC_STRUCT_TRIPLE) )
2812             fenc->i_pic_struct = PIC_STRUCT_AUTO;
2813
2814         if( fenc->i_pic_struct == PIC_STRUCT_AUTO )
2815         {
2816 #if HAVE_INTERLACED
2817             int b_interlaced = fenc->param ? fenc->param->b_interlaced : h->param.b_interlaced;
2818 #else
2819             int b_interlaced = 0;
2820 #endif
2821             if( b_interlaced )
2822             {
2823                 int b_tff = fenc->param ? fenc->param->b_tff : h->param.b_tff;
2824                 fenc->i_pic_struct = b_tff ? PIC_STRUCT_TOP_BOTTOM : PIC_STRUCT_BOTTOM_TOP;
2825             }
2826             else
2827                 fenc->i_pic_struct = PIC_STRUCT_PROGRESSIVE;
2828         }
2829
2830         if( h->param.rc.b_mb_tree && h->param.rc.b_stat_read )
2831         {
2832             if( x264_macroblock_tree_read( h, fenc, pic_in->prop.quant_offsets ) )
2833                 return -1;
2834         }
2835         else
2836             x264_stack_align( x264_adaptive_quant_frame, h, fenc, pic_in->prop.quant_offsets );
2837
2838         if( pic_in->prop.quant_offsets_free )
2839             pic_in->prop.quant_offsets_free( pic_in->prop.quant_offsets );
2840
2841         if( h->frames.b_have_lowres )
2842             x264_frame_init_lowres( h, fenc );
2843
2844         /* 2: Place the frame into the queue for its slice type decision */
2845         x264_lookahead_put_frame( h, fenc );
2846
2847         if( h->frames.i_input <= h->frames.i_delay + 1 - h->i_thread_frames )
2848         {
2849             /* Nothing yet to encode, waiting for filling of buffers */
2850             pic_out->i_type = X264_TYPE_AUTO;
2851             return 0;
2852         }
2853     }
2854     else
2855     {
2856         /* signal kills for lookahead thread */
2857         x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
2858         h->lookahead->b_exit_thread = 1;
2859         x264_pthread_cond_broadcast( &h->lookahead->ifbuf.cv_fill );
2860         x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
2861     }
2862
2863     h->i_frame++;
2864     /* 3: The picture is analyzed in the lookahead */
2865     if( !h->frames.current[0] )
2866         x264_lookahead_get_frames( h );
2867
2868     if( !h->frames.current[0] && x264_lookahead_is_empty( h ) )
2869         return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
2870
2871     /* ------------------- Get frame to be encoded ------------------------- */
2872     /* 4: get picture to encode */
2873     h->fenc = x264_frame_shift( h->frames.current );
2874
2875     /* If applicable, wait for previous frame reconstruction to finish */
2876     if( h->param.b_sliced_threads )
2877         if( x264_threadpool_wait_all( h ) < 0 )
2878             return -1;
2879
2880     if( h->i_frame == h->i_thread_frames - 1 )
2881         h->i_reordered_pts_delay = h->fenc->i_reordered_pts;
2882     if( h->fenc->param )
2883     {
2884         x264_encoder_reconfig( h, h->fenc->param );
2885         if( h->fenc->param->param_free )
2886         {
2887             h->fenc->param->param_free( h->fenc->param );
2888             h->fenc->param = NULL;
2889         }
2890     }
2891
2892     // ok to call this before encoding any frames, since the initial values of fdec have b_kept_as_ref=0
2893     if( x264_reference_update( h ) )
2894         return -1;
2895     h->fdec->i_lines_completed = -1;
2896
2897     if( !IS_X264_TYPE_I( h->fenc->i_type ) )
2898     {
2899         int valid_refs_left = 0;
2900         for( int i = 0; h->frames.reference[i]; i++ )
2901             if( !h->frames.reference[i]->b_corrupt )
2902                 valid_refs_left++;
2903         /* No valid reference frames left: force an IDR. */
2904         if( !valid_refs_left )
2905         {
2906             h->fenc->b_keyframe = 1;
2907             h->fenc->i_type = X264_TYPE_IDR;
2908         }
2909     }
2910
2911     if( h->fenc->b_keyframe )
2912     {
2913         h->frames.i_last_keyframe = h->fenc->i_frame;
2914         if( h->fenc->i_type == X264_TYPE_IDR )
2915         {
2916             h->i_frame_num = 0;
2917             h->frames.i_last_idr = h->fenc->i_frame;
2918         }
2919     }
2920     h->sh.i_mmco_command_count =
2921     h->sh.i_mmco_remove_from_end = 0;
2922     h->b_ref_reorder[0] =
2923     h->b_ref_reorder[1] = 0;
2924     h->fdec->i_poc =
2925     h->fenc->i_poc = 2 * ( h->fenc->i_frame - X264_MAX( h->frames.i_last_idr, 0 ) );
2926
2927     /* ------------------- Setup frame context ----------------------------- */
2928     /* 5: Init data dependent of frame type */
2929     if( h->fenc->i_type == X264_TYPE_IDR )
2930     {
2931         /* reset ref pictures */
2932         i_nal_type    = NAL_SLICE_IDR;
2933         i_nal_ref_idc = NAL_PRIORITY_HIGHEST;
2934         h->sh.i_type = SLICE_TYPE_I;
2935         x264_reference_reset( h );
2936         h->frames.i_poc_last_open_gop = -1;
2937     }
2938     else if( h->fenc->i_type == X264_TYPE_I )
2939     {
2940         i_nal_type    = NAL_SLICE;
2941         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2942         h->sh.i_type = SLICE_TYPE_I;
2943         x264_reference_hierarchy_reset( h );
2944         if( h->param.b_open_gop )
2945             h->frames.i_poc_last_open_gop = h->fenc->b_keyframe ? h->fenc->i_poc : -1;
2946     }
2947     else if( h->fenc->i_type == X264_TYPE_P )
2948     {
2949         i_nal_type    = NAL_SLICE;
2950         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2951         h->sh.i_type = SLICE_TYPE_P;
2952         x264_reference_hierarchy_reset( h );
2953         h->frames.i_poc_last_open_gop = -1;
2954     }
2955     else if( h->fenc->i_type == X264_TYPE_BREF )
2956     {
2957         i_nal_type    = NAL_SLICE;
2958         i_nal_ref_idc = h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT ? NAL_PRIORITY_LOW : NAL_PRIORITY_HIGH;
2959         h->sh.i_type = SLICE_TYPE_B;
2960         x264_reference_hierarchy_reset( h );
2961     }
2962     else    /* B frame */
2963     {
2964         i_nal_type    = NAL_SLICE;
2965         i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
2966         h->sh.i_type = SLICE_TYPE_B;
2967     }
2968
2969     h->fdec->i_type = h->fenc->i_type;
2970     h->fdec->i_frame = h->fenc->i_frame;
2971     h->fenc->b_kept_as_ref =
2972     h->fdec->b_kept_as_ref = i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE && h->param.i_keyint_max > 1;
2973
2974     h->fdec->mb_info = h->fenc->mb_info;
2975     h->fdec->mb_info_free = h->fenc->mb_info_free;
2976     h->fenc->mb_info = NULL;
2977     h->fenc->mb_info_free = NULL;
2978
2979     h->fdec->i_pts = h->fenc->i_pts;
2980     if( h->frames.i_bframe_delay )
2981     {
2982         int64_t *prev_reordered_pts = thread_current->frames.i_prev_reordered_pts;
2983         h->fdec->i_dts = h->i_frame > h->frames.i_bframe_delay
2984                        ? prev_reordered_pts[ (h->i_frame - h->frames.i_bframe_delay) % h->frames.i_bframe_delay ]
2985                        : h->fenc->i_reordered_pts - h->frames.i_bframe_delay_time;
2986         prev_reordered_pts[ h->i_frame % h->frames.i_bframe_delay ] = h->fenc->i_reordered_pts;
2987     }
2988     else
2989         h->fdec->i_dts = h->fenc->i_reordered_pts;
2990     if( h->fenc->i_type == X264_TYPE_IDR )
2991         h->i_last_idr_pts = h->fdec->i_pts;
2992
2993     /* ------------------- Init                ----------------------------- */
2994     /* build ref list 0/1 */
2995     x264_reference_build_list( h, h->fdec->i_poc );
2996
2997     /* ---------------------- Write the bitstream -------------------------- */
2998     /* Init bitstream context */
2999     if( h->param.b_sliced_threads )
3000     {
3001         for( int i = 0; i < h->param.i_threads; i++ )
3002         {
3003             bs_init( &h->thread[i]->out.bs, h->thread[i]->out.p_bitstream, h->thread[i]->out.i_bitstream );
3004             h->thread[i]->out.i_nal = 0;
3005         }
3006     }
3007     else
3008     {
3009         bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
3010         h->out.i_nal = 0;
3011     }
3012
3013     if( h->param.b_aud )
3014     {
3015         int pic_type;
3016
3017         if( h->sh.i_type == SLICE_TYPE_I )
3018             pic_type = 0;
3019         else if( h->sh.i_type == SLICE_TYPE_P )
3020             pic_type = 1;
3021         else if( h->sh.i_type == SLICE_TYPE_B )
3022             pic_type = 2;
3023         else
3024             pic_type = 7;
3025
3026         x264_nal_start( h, NAL_AUD, NAL_PRIORITY_DISPOSABLE );
3027         bs_write( &h->out.bs, 3, pic_type );
3028         bs_rbsp_trailing( &h->out.bs );
3029         if( x264_nal_end( h ) )
3030             return -1;
3031         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3032     }
3033
3034     h->i_nal_type = i_nal_type;
3035     h->i_nal_ref_idc = i_nal_ref_idc;
3036
3037     if( h->param.b_intra_refresh )
3038     {
3039         if( IS_X264_TYPE_I( h->fenc->i_type ) )
3040         {
3041             h->fdec->i_frames_since_pir = 0;
3042             h->b_queued_intra_refresh = 0;
3043             /* PIR is currently only supported with ref == 1, so any intra frame effectively refreshes
3044              * the whole frame and counts as an intra refresh. */
3045             h->fdec->f_pir_position = h->mb.i_mb_width;
3046         }
3047         else if( h->fenc->i_type == X264_TYPE_P )
3048         {
3049             int pocdiff = (h->fdec->i_poc - h->fref[0][0]->i_poc)/2;
3050             float increment = X264_MAX( ((float)h->mb.i_mb_width-1) / h->param.i_keyint_max, 1 );
3051             h->fdec->f_pir_position = h->fref[0][0]->f_pir_position;
3052             h->fdec->i_frames_since_pir = h->fref[0][0]->i_frames_since_pir + pocdiff;
3053             if( h->fdec->i_frames_since_pir >= h->param.i_keyint_max ||
3054                 (h->b_queued_intra_refresh && h->fdec->f_pir_position + 0.5 >= h->mb.i_mb_width) )
3055             {
3056                 h->fdec->f_pir_position = 0;
3057                 h->fdec->i_frames_since_pir = 0;
3058                 h->b_queued_intra_refresh = 0;
3059                 h->fenc->b_keyframe = 1;
3060             }
3061             h->fdec->i_pir_start_col = h->fdec->f_pir_position+0.5;
3062             h->fdec->f_pir_position += increment * pocdiff;
3063             h->fdec->i_pir_end_col = h->fdec->f_pir_position+0.5;
3064             /* If our intra refresh has reached the right side of the frame, we're done. */
3065             if( h->fdec->i_pir_end_col >= h->mb.i_mb_width - 1 )
3066             {
3067                 h->fdec->f_pir_position = h->mb.i_mb_width;
3068                 h->fdec->i_pir_end_col = h->mb.i_mb_width - 1;
3069             }
3070         }
3071     }
3072
3073     if( h->fenc->b_keyframe )
3074     {
3075         /* Write SPS and PPS */
3076         if( h->param.b_repeat_headers )
3077         {
3078             /* generate sequence parameters */
3079             x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
3080             x264_sps_write( &h->out.bs, h->sps );
3081             if( x264_nal_end( h ) )
3082                 return -1;
3083             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
3084
3085             /* generate picture parameters */
3086             x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
3087             x264_pps_write( &h->out.bs, h->sps, h->pps );
3088             if( x264_nal_end( h ) )
3089                 return -1;
3090             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
3091         }
3092
3093         /* when frame threading is used, buffering period sei is written in x264_encoder_frame_end */
3094         if( h->i_thread_frames == 1 && h->sps->vui.b_nal_hrd_parameters_present )
3095         {
3096             x264_hrd_fullness( h );
3097             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3098             x264_sei_buffering_period_write( h, &h->out.bs );
3099             if( x264_nal_end( h ) )
3100                return -1;
3101             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
3102         }
3103     }
3104
3105     /* write extra sei */
3106     for( int i = 0; i < h->fenc->extra_sei.num_payloads; i++ )
3107     {
3108         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3109         x264_sei_write( &h->out.bs, h->fenc->extra_sei.payloads[i].payload, h->fenc->extra_sei.payloads[i].payload_size,
3110                         h->fenc->extra_sei.payloads[i].payload_type );
3111         if( x264_nal_end( h ) )
3112             return -1;
3113         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3114         if( h->fenc->extra_sei.sei_free )
3115         {
3116             h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads[i].payload );
3117             h->fenc->extra_sei.payloads[i].payload = NULL;
3118         }
3119     }
3120
3121     if( h->fenc->extra_sei.sei_free )
3122     {
3123         h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads );
3124         h->fenc->extra_sei.payloads = NULL;
3125         h->fenc->extra_sei.sei_free = NULL;
3126     }
3127
3128     if( h->fenc->b_keyframe )
3129     {
3130         if( h->param.b_repeat_headers && h->fenc->i_frame == 0 )
3131         {
3132             /* identify ourself */
3133             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3134             if( x264_sei_version_write( h, &h->out.bs ) )
3135                 return -1;
3136             if( x264_nal_end( h ) )
3137                 return -1;
3138             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3139         }
3140
3141         if( h->fenc->i_type != X264_TYPE_IDR )
3142         {
3143             int time_to_recovery = h->param.b_open_gop ? 0 : X264_MIN( h->mb.i_mb_width - 1, h->param.i_keyint_max ) + h->param.i_bframe - 1;
3144             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3145             x264_sei_recovery_point_write( h, &h->out.bs, time_to_recovery );
3146             if( x264_nal_end( h ) )
3147                 return -1;
3148             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3149         }
3150
3151         if ( h->param.i_frame_packing >= 0 )
3152         {
3153             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3154             x264_sei_frame_packing_write( h, &h->out.bs );
3155             if( x264_nal_end( h ) )
3156                 return -1;
3157             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3158         }
3159     }
3160
3161     /* generate sei pic timing */
3162     if( h->sps->vui.b_pic_struct_present || h->sps->vui.b_nal_hrd_parameters_present )
3163     {
3164         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3165         x264_sei_pic_timing_write( h, &h->out.bs );
3166         if( x264_nal_end( h ) )
3167             return -1;
3168         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3169     }
3170
3171     /* As required by Blu-ray. */
3172     if( !IS_X264_TYPE_B( h->fenc->i_type ) && h->b_sh_backup )
3173     {
3174         h->b_sh_backup = 0;
3175         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3176         x264_sei_dec_ref_pic_marking_write( h, &h->out.bs );
3177         if( x264_nal_end( h ) )
3178             return -1;
3179         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3180     }
3181
3182     if( h->fenc->b_keyframe && h->param.b_intra_refresh )
3183         h->i_cpb_delay_pir_offset_next = h->fenc->i_cpb_delay;
3184
3185     /* Init the rate control */
3186     /* FIXME: Include slice header bit cost. */
3187     x264_ratecontrol_start( h, h->fenc->i_qpplus1, overhead*8 );
3188     i_global_qp = x264_ratecontrol_qp( h );
3189
3190     pic_out->i_qpplus1 =
3191     h->fdec->i_qpplus1 = i_global_qp + 1;
3192
3193     if( h->param.rc.b_stat_read && h->sh.i_type != SLICE_TYPE_I )
3194     {
3195         x264_reference_build_list_optimal( h );
3196         x264_reference_check_reorder( h );
3197     }
3198
3199     if( h->i_ref[0] )
3200         h->fdec->i_poc_l0ref0 = h->fref[0][0]->i_poc;
3201
3202     /* ------------------------ Create slice header  ----------------------- */
3203     x264_slice_init( h, i_nal_type, i_global_qp );
3204
3205     /*------------------------- Weights -------------------------------------*/
3206     if( h->sh.i_type == SLICE_TYPE_B )
3207         x264_macroblock_bipred_init( h );
3208
3209     x264_weighted_pred_init( h );
3210
3211     if( i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE )
3212         h->i_frame_num++;
3213
3214     /* Write frame */
3215     h->i_threadslice_start = 0;
3216     h->i_threadslice_end = h->mb.i_mb_height;
3217     if( h->i_thread_frames > 1 )
3218     {
3219         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h );
3220         h->b_thread_active = 1;
3221     }
3222     else if( h->param.b_sliced_threads )
3223     {
3224         if( x264_threaded_slices_write( h ) )
3225             return -1;
3226     }
3227     else
3228         if( (intptr_t)x264_slices_write( h ) )
3229             return -1;
3230
3231     return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
3232 }
3233
3234 static int x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
3235                                    x264_nal_t **pp_nal, int *pi_nal,
3236                                    x264_picture_t *pic_out )
3237 {
3238     char psz_message[80];
3239
3240     if( !h->param.b_sliced_threads && h->b_thread_active )
3241     {
3242         h->b_thread_active = 0;
3243         if( (intptr_t)x264_threadpool_wait( h->threadpool, h ) )
3244             return -1;
3245     }
3246     if( !h->out.i_nal )
3247     {
3248         pic_out->i_type = X264_TYPE_AUTO;
3249         return 0;
3250     }
3251
3252     x264_emms();
3253
3254     /* generate buffering period sei and insert it into place */
3255     if( h->i_thread_frames > 1 && h->fenc->b_keyframe && h->sps->vui.b_nal_hrd_parameters_present )
3256     {
3257         x264_hrd_fullness( h );
3258         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3259         x264_sei_buffering_period_write( h, &h->out.bs );
3260         if( x264_nal_end( h ) )
3261            return -1;
3262         /* buffering period sei must follow AUD, SPS and PPS and precede all other SEIs */
3263         int idx = 0;
3264         while( h->out.nal[idx].i_type == NAL_AUD ||
3265                h->out.nal[idx].i_type == NAL_SPS ||
3266                h->out.nal[idx].i_type == NAL_PPS )
3267             idx++;
3268         x264_nal_t nal_tmp = h->out.nal[h->out.i_nal-1];
3269         memmove( &h->out.nal[idx+1], &h->out.nal[idx], (h->out.i_nal-idx-1)*sizeof(x264_nal_t) );
3270         h->out.nal[idx] = nal_tmp;
3271     }
3272
3273     int frame_size = x264_encoder_encapsulate_nals( h, 0 );
3274     if( frame_size < 0 )
3275         return -1;
3276
3277     /* Set output picture properties */
3278     pic_out->i_type = h->fenc->i_type;
3279
3280     pic_out->b_keyframe = h->fenc->b_keyframe;
3281     pic_out->i_pic_struct = h->fenc->i_pic_struct;
3282
3283     pic_out->i_pts = h->fdec->i_pts;
3284     pic_out->i_dts = h->fdec->i_dts;
3285
3286     if( pic_out->i_pts < pic_out->i_dts )
3287         x264_log( h, X264_LOG_WARNING, "invalid DTS: PTS is less than DTS\n" );
3288
3289     pic_out->opaque = h->fenc->opaque;
3290
3291     pic_out->img.i_csp = h->fdec->i_csp;
3292 #if HIGH_BIT_DEPTH
3293     pic_out->img.i_csp |= X264_CSP_HIGH_DEPTH;
3294 #endif
3295     pic_out->img.i_plane = h->fdec->i_plane;
3296     for( int i = 0; i < pic_out->img.i_plane; i++ )
3297     {
3298         pic_out->img.i_stride[i] = h->fdec->i_stride[i] * sizeof(pixel);
3299         pic_out->img.plane[i] = (uint8_t*)h->fdec->plane[i];
3300     }
3301
3302     x264_frame_push_unused( thread_current, h->fenc );
3303
3304     /* ---------------------- Update encoder state ------------------------- */
3305
3306     /* update rc */
3307     int filler = 0;
3308     if( x264_ratecontrol_end( h, frame_size * 8, &filler ) < 0 )
3309         return -1;
3310
3311     pic_out->hrd_timing = h->fenc->hrd_timing;
3312     pic_out->prop.f_crf_avg = h->fdec->f_crf_avg;
3313
3314     while( filler > 0 )
3315     {
3316         int f, overhead;
3317         overhead = (FILLER_OVERHEAD - h->param.b_annexb);
3318         if( h->param.i_slice_max_size && filler > h->param.i_slice_max_size )
3319         {
3320             int next_size = filler - h->param.i_slice_max_size;
3321             int overflow = X264_MAX( overhead - next_size, 0 );
3322             f = h->param.i_slice_max_size - overhead - overflow;
3323         }
3324         else
3325             f = X264_MAX( 0, filler - overhead );
3326
3327         x264_nal_start( h, NAL_FILLER, NAL_PRIORITY_DISPOSABLE );
3328         x264_filler_write( h, &h->out.bs, f );
3329         if( x264_nal_end( h ) )
3330             return -1;
3331         int total_size = x264_encoder_encapsulate_nals( h, h->out.i_nal-1 );
3332         if( total_size < 0 )
3333             return -1;
3334         frame_size += total_size;
3335         filler -= total_size;
3336     }
3337
3338     /* End bitstream, set output  */
3339     *pi_nal = h->out.i_nal;
3340     *pp_nal = h->out.nal;
3341
3342     h->out.i_nal = 0;
3343
3344     x264_noise_reduction_update( h );
3345
3346     /* ---------------------- Compute/Print statistics --------------------- */
3347     x264_thread_sync_stat( h, h->thread[0] );
3348
3349     /* Slice stat */
3350     h->stat.i_frame_count[h->sh.i_type]++;
3351     h->stat.i_frame_size[h->sh.i_type] += frame_size;
3352     h->stat.f_frame_qp[h->sh.i_type] += h->fdec->f_qp_avg_aq;
3353
3354     for( int i = 0; i < X264_MBTYPE_MAX; i++ )
3355         h->stat.i_mb_count[h->sh.i_type][i] += h->stat.frame.i_mb_count[i];
3356     for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3357         h->stat.i_mb_partition[h->sh.i_type][i] += h->stat.frame.i_mb_partition[i];
3358     for( int i = 0; i < 2; i++ )
3359         h->stat.i_mb_count_8x8dct[i] += h->stat.frame.i_mb_count_8x8dct[i];
3360     for( int i = 0; i < 6; i++ )
3361         h->stat.i_mb_cbp[i] += h->stat.frame.i_mb_cbp[i];
3362     for( int i = 0; i < 4; i++ )
3363         for( int j = 0; j < 13; j++ )
3364             h->stat.i_mb_pred_mode[i][j] += h->stat.frame.i_mb_pred_mode[i][j];
3365     if( h->sh.i_type != SLICE_TYPE_I )
3366         for( int i_list = 0; i_list < 2; i_list++ )
3367             for( int i = 0; i < X264_REF_MAX*2; i++ )
3368                 h->stat.i_mb_count_ref[h->sh.i_type][i_list][i] += h->stat.frame.i_mb_count_ref[i_list][i];
3369     for( int i = 0; i < 3; i++ )
3370         h->stat.i_mb_field[i] += h->stat.frame.i_mb_field[i];
3371     if( h->sh.i_type == SLICE_TYPE_P && h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE )
3372     {
3373         h->stat.i_wpred[0] += !!h->sh.weight[0][0].weightfn;
3374         h->stat.i_wpred[1] += !!h->sh.weight[0][1].weightfn || !!h->sh.weight[0][2].weightfn;
3375     }
3376     if( h->sh.i_type == SLICE_TYPE_B )
3377     {
3378         h->stat.i_direct_frames[ h->sh.b_direct_spatial_mv_pred ] ++;
3379         if( h->mb.b_direct_auto_write )
3380         {
3381             //FIXME somewhat arbitrary time constants
3382             if( h->stat.i_direct_score[0] + h->stat.i_direct_score[1] > h->mb.i_mb_count )
3383                 for( int i = 0; i < 2; i++ )
3384                     h->stat.i_direct_score[i] = h->stat.i_direct_score[i] * 9/10;
3385             for( int i = 0; i < 2; i++ )
3386                 h->stat.i_direct_score[i] += h->stat.frame.i_direct_score[i];
3387         }
3388     }
3389     else
3390         h->stat.i_consecutive_bframes[h->fenc->i_bframes]++;
3391
3392     psz_message[0] = '\0';
3393     double dur = h->fenc->f_duration;
3394     h->stat.f_frame_duration[h->sh.i_type] += dur;
3395     if( h->param.analyse.b_psnr )
3396     {
3397         int64_t ssd[3] =
3398         {
3399             h->stat.frame.i_ssd[0],
3400             h->stat.frame.i_ssd[1],
3401             h->stat.frame.i_ssd[2],
3402         };
3403         int luma_size = h->param.i_width * h->param.i_height;
3404         int chroma_size = CHROMA_SIZE( luma_size );
3405         pic_out->prop.f_psnr[0] = x264_psnr( ssd[0], luma_size );
3406         pic_out->prop.f_psnr[1] = x264_psnr( ssd[1], chroma_size );
3407         pic_out->prop.f_psnr[2] = x264_psnr( ssd[2], chroma_size );
3408         pic_out->prop.f_psnr_avg = x264_psnr( ssd[0] + ssd[1] + ssd[2], luma_size + chroma_size*2 );
3409
3410         h->stat.f_ssd_global[h->sh.i_type]   += dur * (ssd[0] + ssd[1] + ssd[2]);
3411         h->stat.f_psnr_average[h->sh.i_type] += dur * pic_out->prop.f_psnr_avg;
3412         h->stat.f_psnr_mean_y[h->sh.i_type]  += dur * pic_out->prop.f_psnr[0];
3413         h->stat.f_psnr_mean_u[h->sh.i_type]  += dur * pic_out->prop.f_psnr[1];
3414         h->stat.f_psnr_mean_v[h->sh.i_type]  += dur * pic_out->prop.f_psnr[2];
3415
3416         snprintf( psz_message, 80, " PSNR Y:%5.2f U:%5.2f V:%5.2f", pic_out->prop.f_psnr[0],
3417                                                                     pic_out->prop.f_psnr[1],
3418                                                                     pic_out->prop.f_psnr[2] );
3419     }
3420
3421     if( h->param.analyse.b_ssim )
3422     {
3423         pic_out->prop.f_ssim = h->stat.frame.f_ssim / h->stat.frame.i_ssim_cnt;
3424         h->stat.f_ssim_mean_y[h->sh.i_type] += pic_out->prop.f_ssim * dur;
3425         snprintf( psz_message + strlen(psz_message), 80 - strlen(psz_message),
3426                   " SSIM Y:%.5f", pic_out->prop.f_ssim );
3427     }
3428     psz_message[79] = '\0';
3429
3430     x264_log( h, X264_LOG_DEBUG,
3431                   "frame=%4d QP=%.2f NAL=%d Slice:%c Poc:%-3d I:%-4d P:%-4d SKIP:%-4d size=%d bytes%s\n",
3432               h->i_frame,
3433               h->fdec->f_qp_avg_aq,
3434               h->i_nal_ref_idc,
3435               h->sh.i_type == SLICE_TYPE_I ? 'I' : (h->sh.i_type == SLICE_TYPE_P ? 'P' : 'B' ),
3436               h->fdec->i_poc,
3437               h->stat.frame.i_mb_count_i,
3438               h->stat.frame.i_mb_count_p,
3439               h->stat.frame.i_mb_count_skip,
3440               frame_size,
3441               psz_message );
3442
3443     // keep stats all in one place
3444     x264_thread_sync_stat( h->thread[0], h );
3445     // for the use of the next frame
3446     x264_thread_sync_stat( thread_current, h );
3447
3448 #ifdef DEBUG_MB_TYPE
3449 {
3450     static const char mb_chars[] = { 'i', 'i', 'I', 'C', 'P', '8', 'S',
3451         'D', '<', 'X', 'B', 'X', '>', 'B', 'B', 'B', 'B', '8', 'S' };
3452     for( int mb_xy = 0; mb_xy < h->mb.i_mb_width * h->mb.i_mb_height; mb_xy++ )
3453     {
3454         if( h->mb.type[mb_xy] < X264_MBTYPE_MAX && h->mb.type[mb_xy] >= 0 )
3455             fprintf( stderr, "%c ", mb_chars[ h->mb.type[mb_xy] ] );
3456         else
3457             fprintf( stderr, "? " );
3458
3459         if( (mb_xy+1) % h->mb.i_mb_width == 0 )
3460             fprintf( stderr, "\n" );
3461     }
3462 }
3463 #endif
3464
3465     /* Remove duplicates, must be done near the end as breaks h->fref0 array
3466      * by freeing some of its pointers. */
3467     for( int i = 0; i < h->i_ref[0]; i++ )
3468         if( h->fref[0][i] && h->fref[0][i]->b_duplicate )
3469         {
3470             x264_frame_push_blank_unused( h, h->fref[0][i] );
3471             h->fref[0][i] = 0;
3472         }
3473
3474     if( h->param.psz_dump_yuv )
3475         x264_frame_dump( h );
3476     x264_emms();
3477
3478     return frame_size;
3479 }
3480
3481 static void x264_print_intra( int64_t *i_mb_count, double i_count, int b_print_pcm, char *intra )
3482 {
3483     intra += sprintf( intra, "I16..4%s: %4.1f%% %4.1f%% %4.1f%%",
3484         b_print_pcm ? "..PCM" : "",
3485         i_mb_count[I_16x16]/ i_count,
3486         i_mb_count[I_8x8]  / i_count,
3487         i_mb_count[I_4x4]  / i_count );
3488     if( b_print_pcm )
3489         sprintf( intra, " %4.1f%%", i_mb_count[I_PCM]  / i_count );
3490 }
3491
3492 /****************************************************************************
3493  * x264_encoder_close:
3494  ****************************************************************************/
3495 void    x264_encoder_close  ( x264_t *h )
3496 {
3497     int64_t i_yuv_size = FRAME_SIZE( h->param.i_width * h->param.i_height );
3498     int64_t i_mb_count_size[2][7] = {{0}};
3499     char buf[200];
3500     int b_print_pcm = h->stat.i_mb_count[SLICE_TYPE_I][I_PCM]
3501                    || h->stat.i_mb_count[SLICE_TYPE_P][I_PCM]
3502                    || h->stat.i_mb_count[SLICE_TYPE_B][I_PCM];
3503
3504     x264_lookahead_delete( h );
3505
3506     if( h->param.b_sliced_threads )
3507         x264_threadpool_wait_all( h );
3508     if( h->param.i_threads > 1 )
3509         x264_threadpool_delete( h->threadpool );
3510     if( h->param.i_lookahead_threads > 1 )
3511         x264_threadpool_delete( h->lookaheadpool );
3512     if( h->i_thread_frames > 1 )
3513     {
3514         for( int i = 0; i < h->i_thread_frames; i++ )
3515             if( h->thread[i]->b_thread_active )
3516             {
3517                 assert( h->thread[i]->fenc->i_reference_count == 1 );
3518                 x264_frame_delete( h->thread[i]->fenc );
3519             }
3520
3521         x264_t *thread_prev = h->thread[h->i_thread_phase];
3522         x264_thread_sync_ratecontrol( h, thread_prev, h );
3523         x264_thread_sync_ratecontrol( thread_prev, thread_prev, h );
3524         h->i_frame = thread_prev->i_frame + 1 - h->i_thread_frames;
3525     }
3526     h->i_frame++;
3527
3528     /* Slices used and PSNR */
3529     for( int i = 0; i < 3; i++ )
3530     {
3531         static const uint8_t slice_order[] = { SLICE_TYPE_I, SLICE_TYPE_P, SLICE_TYPE_B };
3532         int i_slice = slice_order[i];
3533
3534         if( h->stat.i_frame_count[i_slice] > 0 )
3535         {
3536             int i_count = h->stat.i_frame_count[i_slice];
3537             double dur =  h->stat.f_frame_duration[i_slice];
3538             if( h->param.analyse.b_psnr )
3539             {
3540                 x264_log( h, X264_LOG_INFO,
3541                           "frame %c:%-5d Avg QP:%5.2f  size:%6.0f  PSNR Mean Y:%5.2f U:%5.2f V:%5.2f Avg:%5.2f Global:%5.2f\n",
3542                           slice_type_to_char[i_slice],
3543                           i_count,
3544                           h->stat.f_frame_qp[i_slice] / i_count,
3545                           (double)h->stat.i_frame_size[i_slice] / i_count,
3546                           h->stat.f_psnr_mean_y[i_slice] / dur, h->stat.f_psnr_mean_u[i_slice] / dur, h->stat.f_psnr_mean_v[i_slice] / dur,
3547                           h->stat.f_psnr_average[i_slice] / dur,
3548                           x264_psnr( h->stat.f_ssd_global[i_slice], dur * i_yuv_size ) );
3549             }
3550             else
3551             {
3552                 x264_log( h, X264_LOG_INFO,
3553                           "frame %c:%-5d Avg QP:%5.2f  size:%6.0f\n",
3554                           slice_type_to_char[i_slice],
3555                           i_count,
3556                           h->stat.f_frame_qp[i_slice] / i_count,
3557                           (double)h->stat.i_frame_size[i_slice] / i_count );
3558             }
3559         }
3560     }
3561     if( h->param.i_bframe && h->stat.i_frame_count[SLICE_TYPE_B] )
3562     {
3563         char *p = buf;
3564         int den = 0;
3565         // weight by number of frames (including the I/P-frames) that are in a sequence of N B-frames
3566         for( int i = 0; i <= h->param.i_bframe; i++ )
3567             den += (i+1) * h->stat.i_consecutive_bframes[i];
3568         for( int i = 0; i <= h->param.i_bframe; i++ )
3569             p += sprintf( p, " %4.1f%%", 100. * (i+1) * h->stat.i_consecutive_bframes[i] / den );
3570         x264_log( h, X264_LOG_INFO, "consecutive B-frames:%s\n", buf );
3571     }
3572
3573     for( int i_type = 0; i_type < 2; i_type++ )
3574         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3575         {
3576             if( i == D_DIRECT_8x8 ) continue; /* direct is counted as its own type */
3577             i_mb_count_size[i_type][x264_mb_partition_pixel_table[i]] += h->stat.i_mb_partition[i_type][i];
3578         }
3579
3580     /* MB types used */
3581     if( h->stat.i_frame_count[SLICE_TYPE_I] > 0 )
3582     {
3583         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_I];
3584         double i_count = h->stat.i_frame_count[SLICE_TYPE_I] * h->mb.i_mb_count / 100.0;
3585         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3586         x264_log( h, X264_LOG_INFO, "mb I  %s\n", buf );
3587     }
3588     if( h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3589     {
3590         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_P];
3591         double i_count = h->stat.i_frame_count[SLICE_TYPE_P] * h->mb.i_mb_count / 100.0;
3592         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_P];
3593         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3594         x264_log( h, X264_LOG_INFO,
3595                   "mb P  %s  P16..4: %4.1f%% %4.1f%% %4.1f%% %4.1f%% %4.1f%%    skip:%4.1f%%\n",
3596                   buf,
3597                   i_mb_size[PIXEL_16x16] / (i_count*4),
3598                   (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3599                   i_mb_size[PIXEL_8x8] / (i_count*4),
3600                   (i_mb_size[PIXEL_8x4] + i_mb_size[PIXEL_4x8]) / (i_count*4),
3601                   i_mb_size[PIXEL_4x4] / (i_count*4),
3602                   i_mb_count[P_SKIP] / i_count );
3603     }
3604     if( h->stat.i_frame_count[SLICE_TYPE_B] > 0 )
3605     {
3606         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_B];
3607         double i_count = h->stat.i_frame_count[SLICE_TYPE_B] * h->mb.i_mb_count / 100.0;
3608         double i_mb_list_count;
3609         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_B];
3610         int64_t list_count[3] = {0}; /* 0 == L0, 1 == L1, 2 == BI */
3611         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3612         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3613             for( int j = 0; j < 2; j++ )
3614             {
3615                 int l0 = x264_mb_type_list_table[i][0][j];
3616                 int l1 = x264_mb_type_list_table[i][1][j];
3617                 if( l0 || l1 )
3618                     list_count[l1+l0*l1] += h->stat.i_mb_count[SLICE_TYPE_B][i] * 2;
3619             }
3620         list_count[0] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L0_8x8];
3621         list_count[1] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L1_8x8];
3622         list_count[2] += h->stat.i_mb_partition[SLICE_TYPE_B][D_BI_8x8];
3623         i_mb_count[B_DIRECT] += (h->stat.i_mb_partition[SLICE_TYPE_B][D_DIRECT_8x8]+2)/4;
3624         i_mb_list_count = (list_count[0] + list_count[1] + list_count[2]) / 100.0;
3625         sprintf( buf + strlen(buf), "  B16..8: %4.1f%% %4.1f%% %4.1f%%  direct:%4.1f%%  skip:%4.1f%%",
3626                  i_mb_size[PIXEL_16x16] / (i_count*4),
3627                  (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3628                  i_mb_size[PIXEL_8x8] / (i_count*4),
3629                  i_mb_count[B_DIRECT] / i_count,
3630                  i_mb_count[B_SKIP]   / i_count );
3631         if( i_mb_list_count != 0 )
3632             sprintf( buf + strlen(buf), "  L0:%4.1f%% L1:%4.1f%% BI:%4.1f%%",
3633                      list_count[0] / i_mb_list_count,
3634                      list_count[1] / i_mb_list_count,
3635                      list_count[2] / i_mb_list_count );
3636         x264_log( h, X264_LOG_INFO, "mb B  %s\n", buf );
3637     }
3638
3639     x264_ratecontrol_summary( h );
3640
3641     if( h->stat.i_frame_count[SLICE_TYPE_I] + h->stat.i_frame_count[SLICE_TYPE_P] + h->stat.i_frame_count[SLICE_TYPE_B] > 0 )
3642     {
3643 #define SUM3(p) (p[SLICE_TYPE_I] + p[SLICE_TYPE_P] + p[SLICE_TYPE_B])
3644 #define SUM3b(p,o) (p[SLICE_TYPE_I][o] + p[SLICE_TYPE_P][o] + p[SLICE_TYPE_B][o])
3645         int64_t i_i8x8 = SUM3b( h->stat.i_mb_count, I_8x8 );
3646         int64_t i_intra = i_i8x8 + SUM3b( h->stat.i_mb_count, I_4x4 )
3647                                  + SUM3b( h->stat.i_mb_count, I_16x16 );
3648         int64_t i_all_intra = i_intra + SUM3b( h->stat.i_mb_count, I_PCM);
3649         int64_t i_skip = SUM3b( h->stat.i_mb_count, P_SKIP )
3650                        + SUM3b( h->stat.i_mb_count, B_SKIP );
3651         const int i_count = h->stat.i_frame_count[SLICE_TYPE_I] +
3652                             h->stat.i_frame_count[SLICE_TYPE_P] +
3653                             h->stat.i_frame_count[SLICE_TYPE_B];
3654         int64_t i_mb_count = (int64_t)i_count * h->mb.i_mb_count;
3655         int64_t i_inter = i_mb_count - i_skip - i_intra;
3656         const double duration = h->stat.f_frame_duration[SLICE_TYPE_I] +
3657                                 h->stat.f_frame_duration[SLICE_TYPE_P] +
3658                                 h->stat.f_frame_duration[SLICE_TYPE_B];
3659         float f_bitrate = SUM3(h->stat.i_frame_size) / duration / 125;
3660
3661         if( PARAM_INTERLACED )
3662         {
3663             char *fieldstats = buf;
3664             fieldstats[0] = 0;
3665             if( i_inter )
3666                 fieldstats += sprintf( fieldstats, " inter:%.1f%%", h->stat.i_mb_field[1] * 100.0 / i_inter );
3667             if( i_skip )
3668                 fieldstats += sprintf( fieldstats, " skip:%.1f%%", h->stat.i_mb_field[2] * 100.0 / i_skip );
3669             x264_log( h, X264_LOG_INFO, "field mbs: intra: %.1f%%%s\n",
3670                       h->stat.i_mb_field[0] * 100.0 / i_intra, buf );
3671         }
3672
3673         if( h->pps->b_transform_8x8_mode )
3674         {
3675             buf[0] = 0;
3676             if( h->stat.i_mb_count_8x8dct[0] )
3677                 sprintf( buf, " inter:%.1f%%", 100. * h->stat.i_mb_count_8x8dct[1] / h->stat.i_mb_count_8x8dct[0] );
3678             x264_log( h, X264_LOG_INFO, "8x8 transform intra:%.1f%%%s\n", 100. * i_i8x8 / i_intra, buf );
3679         }
3680
3681         if( (h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO ||
3682             (h->stat.i_direct_frames[0] && h->stat.i_direct_frames[1]))
3683             && h->stat.i_frame_count[SLICE_TYPE_B] )
3684         {
3685             x264_log( h, X264_LOG_INFO, "direct mvs  spatial:%.1f%% temporal:%.1f%%\n",
3686                       h->stat.i_direct_frames[1] * 100. / h->stat.i_frame_count[SLICE_TYPE_B],
3687                       h->stat.i_direct_frames[0] * 100. / h->stat.i_frame_count[SLICE_TYPE_B] );
3688         }
3689
3690         buf[0] = 0;
3691         int csize = CHROMA444 ? 4 : 1;
3692         if( i_mb_count != i_all_intra )
3693             sprintf( buf, " inter: %.1f%% %.1f%% %.1f%%",
3694                      h->stat.i_mb_cbp[1] * 100.0 / ((i_mb_count - i_all_intra)*4),
3695                      h->stat.i_mb_cbp[3] * 100.0 / ((i_mb_count - i_all_intra)*csize),
3696                      h->stat.i_mb_cbp[5] * 100.0 / ((i_mb_count - i_all_intra)*csize) );
3697         x264_log( h, X264_LOG_INFO, "coded y,%s,%s intra: %.1f%% %.1f%% %.1f%%%s\n",
3698                   CHROMA444?"u":"uvDC", CHROMA444?"v":"uvAC",
3699                   h->stat.i_mb_cbp[0] * 100.0 / (i_all_intra*4),
3700                   h->stat.i_mb_cbp[2] * 100.0 / (i_all_intra*csize),
3701                   h->stat.i_mb_cbp[4] * 100.0 / (i_all_intra*csize), buf );
3702
3703         int64_t fixed_pred_modes[4][9] = {{0}};
3704         int64_t sum_pred_modes[4] = {0};
3705         for( int i = 0; i <= I_PRED_16x16_DC_128; i++ )
3706         {
3707             fixed_pred_modes[0][x264_mb_pred_mode16x16_fix[i]] += h->stat.i_mb_pred_mode[0][i];
3708             sum_pred_modes[0] += h->stat.i_mb_pred_mode[0][i];
3709         }
3710         if( sum_pred_modes[0] )
3711             x264_log( h, X264_LOG_INFO, "i16 v,h,dc,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3712                       fixed_pred_modes[0][0] * 100.0 / sum_pred_modes[0],
3713                       fixed_pred_modes[0][1] * 100.0 / sum_pred_modes[0],
3714                       fixed_pred_modes[0][2] * 100.0 / sum_pred_modes[0],
3715                       fixed_pred_modes[0][3] * 100.0 / sum_pred_modes[0] );
3716         for( int i = 1; i <= 2; i++ )
3717         {
3718             for( int j = 0; j <= I_PRED_8x8_DC_128; j++ )
3719             {
3720                 fixed_pred_modes[i][x264_mb_pred_mode4x4_fix(j)] += h->stat.i_mb_pred_mode[i][j];
3721                 sum_pred_modes[i] += h->stat.i_mb_pred_mode[i][j];
3722             }
3723             if( sum_pred_modes[i] )
3724                 x264_log( h, X264_LOG_INFO, "i%d v,h,dc,ddl,ddr,vr,hd,vl,hu: %2.0f%% %2.0f%% %2.0f%% %2.0f%% %2.0f%% %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n", (3-i)*4,
3725                           fixed_pred_modes[i][0] * 100.0 / sum_pred_modes[i],
3726                           fixed_pred_modes[i][1] * 100.0 / sum_pred_modes[i],
3727                           fixed_pred_modes[i][2] * 100.0 / sum_pred_modes[i],
3728                           fixed_pred_modes[i][3] * 100.0 / sum_pred_modes[i],
3729                           fixed_pred_modes[i][4] * 100.0 / sum_pred_modes[i],
3730                           fixed_pred_modes[i][5] * 100.0 / sum_pred_modes[i],
3731                           fixed_pred_modes[i][6] * 100.0 / sum_pred_modes[i],
3732                           fixed_pred_modes[i][7] * 100.0 / sum_pred_modes[i],
3733                           fixed_pred_modes[i][8] * 100.0 / sum_pred_modes[i] );
3734         }
3735         for( int i = 0; i <= I_PRED_CHROMA_DC_128; i++ )
3736         {
3737             fixed_pred_modes[3][x264_mb_chroma_pred_mode_fix[i]] += h->stat.i_mb_pred_mode[3][i];
3738             sum_pred_modes[3] += h->stat.i_mb_pred_mode[3][i];
3739         }
3740         if( sum_pred_modes[3] && !CHROMA444 )
3741             x264_log( h, X264_LOG_INFO, "i8c dc,h,v,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3742                       fixed_pred_modes[3][0] * 100.0 / sum_pred_modes[3],
3743                       fixed_pred_modes[3][1] * 100.0 / sum_pred_modes[3],
3744                       fixed_pred_modes[3][2] * 100.0 / sum_pred_modes[3],
3745                       fixed_pred_modes[3][3] * 100.0 / sum_pred_modes[3] );
3746
3747         if( h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE && h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3748             x264_log( h, X264_LOG_INFO, "Weighted P-Frames: Y:%.1f%% UV:%.1f%%\n",
3749                       h->stat.i_wpred[0] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P],
3750                       h->stat.i_wpred[1] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P] );
3751
3752         for( int i_list = 0; i_list < 2; i_list++ )
3753             for( int i_slice = 0; i_slice < 2; i_slice++ )
3754             {
3755                 char *p = buf;
3756                 int64_t i_den = 0;
3757                 int i_max = 0;
3758                 for( int i = 0; i < X264_REF_MAX*2; i++ )
3759                     if( h->stat.i_mb_count_ref[i_slice][i_list][i] )
3760                     {
3761                         i_den += h->stat.i_mb_count_ref[i_slice][i_list][i];
3762                         i_max = i;
3763                     }
3764                 if( i_max == 0 )
3765                     continue;
3766                 for( int i = 0; i <= i_max; i++ )
3767                     p += sprintf( p, " %4.1f%%", 100. * h->stat.i_mb_count_ref[i_slice][i_list][i] / i_den );
3768                 x264_log( h, X264_LOG_INFO, "ref %c L%d:%s\n", "PB"[i_slice], i_list, buf );
3769             }
3770
3771         if( h->param.analyse.b_ssim )
3772         {
3773             float ssim = SUM3( h->stat.f_ssim_mean_y ) / duration;
3774             x264_log( h, X264_LOG_INFO, "SSIM Mean Y:%.7f (%6.3fdb)\n", ssim, x264_ssim( ssim ) );
3775         }
3776         if( h->param.analyse.b_psnr )
3777         {
3778             x264_log( h, X264_LOG_INFO,
3779                       "PSNR Mean Y:%6.3f U:%6.3f V:%6.3f Avg:%6.3f Global:%6.3f kb/s:%.2f\n",
3780                       SUM3( h->stat.f_psnr_mean_y ) / duration,
3781                       SUM3( h->stat.f_psnr_mean_u ) / duration,
3782                       SUM3( h->stat.f_psnr_mean_v ) / duration,
3783                       SUM3( h->stat.f_psnr_average ) / duration,
3784                       x264_psnr( SUM3( h->stat.f_ssd_global ), duration * i_yuv_size ),
3785                       f_bitrate );
3786         }
3787         else
3788             x264_log( h, X264_LOG_INFO, "kb/s:%.2f\n", f_bitrate );
3789     }
3790
3791     /* rc */
3792     x264_ratecontrol_delete( h );
3793
3794     /* param */
3795     if( h->param.rc.psz_stat_out )
3796         free( h->param.rc.psz_stat_out );
3797     if( h->param.rc.psz_stat_in )
3798         free( h->param.rc.psz_stat_in );
3799
3800     x264_cqm_delete( h );
3801     x264_free( h->nal_buffer );
3802     x264_analyse_free_costs( h );
3803
3804     if( h->i_thread_frames > 1 )
3805         h = h->thread[h->i_thread_phase];
3806
3807     /* frames */
3808     x264_frame_delete_list( h->frames.unused[0] );
3809     x264_frame_delete_list( h->frames.unused[1] );
3810     x264_frame_delete_list( h->frames.current );
3811     x264_frame_delete_list( h->frames.blank_unused );
3812
3813     h = h->thread[0];
3814
3815     for( int i = 0; i < h->i_thread_frames; i++ )
3816         if( h->thread[i]->b_thread_active )
3817             for( int j = 0; j < h->thread[i]->i_ref[0]; j++ )
3818                 if( h->thread[i]->fref[0][j] && h->thread[i]->fref[0][j]->b_duplicate )
3819                     x264_frame_delete( h->thread[i]->fref[0][j] );
3820
3821     if( h->param.i_lookahead_threads > 1 )
3822         for( int i = 0; i < h->param.i_lookahead_threads; i++ )
3823             x264_free( h->lookahead_thread[i] );
3824
3825     for( int i = h->param.i_threads - 1; i >= 0; i-- )
3826     {
3827         x264_frame_t **frame;
3828
3829         if( !h->param.b_sliced_threads || i == 0 )
3830         {
3831             for( frame = h->thread[i]->frames.reference; *frame; frame++ )
3832             {
3833                 assert( (*frame)->i_reference_count > 0 );
3834                 (*frame)->i_reference_count--;
3835                 if( (*frame)->i_reference_count == 0 )
3836                     x264_frame_delete( *frame );
3837             }
3838             frame = &h->thread[i]->fdec;
3839             if( *frame )
3840             {
3841                 assert( (*frame)->i_reference_count > 0 );
3842                 (*frame)->i_reference_count--;
3843                 if( (*frame)->i_reference_count == 0 )
3844                     x264_frame_delete( *frame );
3845             }
3846             x264_macroblock_cache_free( h->thread[i] );
3847         }
3848         x264_macroblock_thread_free( h->thread[i], 0 );
3849         x264_free( h->thread[i]->out.p_bitstream );
3850         x264_free( h->thread[i]->out.nal );
3851         x264_pthread_mutex_destroy( &h->thread[i]->mutex );
3852         x264_pthread_cond_destroy( &h->thread[i]->cv );
3853         x264_free( h->thread[i] );
3854     }
3855 }
3856
3857 int x264_encoder_delayed_frames( x264_t *h )
3858 {
3859     int delayed_frames = 0;
3860     if( h->i_thread_frames > 1 )
3861     {
3862         for( int i = 0; i < h->i_thread_frames; i++ )
3863             delayed_frames += h->thread[i]->b_thread_active;
3864         h = h->thread[h->i_thread_phase];
3865     }
3866     for( int i = 0; h->frames.current[i]; i++ )
3867         delayed_frames++;
3868     x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
3869     x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
3870     x264_pthread_mutex_lock( &h->lookahead->next.mutex );
3871     delayed_frames += h->lookahead->ifbuf.i_size + h->lookahead->next.i_size + h->lookahead->ofbuf.i_size;
3872     x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
3873     x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
3874     x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
3875     return delayed_frames;
3876 }
3877
3878 int x264_encoder_maximum_delayed_frames( x264_t *h )
3879 {
3880     return h->frames.i_delay;
3881 }