Export the average effective CRF of each frame
[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( (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 );
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     /* If this isn't the first slice in the threadslice, set the slice QP
2240      * equal to the last QP in the previous slice for more accurate
2241      * CABAC initialization. */
2242     if( h->sh.i_first_mb != h->i_threadslice_start * h->mb.i_mb_width )
2243     {
2244         h->sh.i_qp = h->mb.i_last_qp;
2245         h->sh.i_qp_delta = h->sh.i_qp - h->pps->i_pic_init_qp;
2246     }
2247
2248     x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
2249     if( h->param.b_cabac )
2250     {
2251         /* alignment needed */
2252         bs_align_1( &h->out.bs );
2253
2254         /* init cabac */
2255         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 );
2256         x264_cabac_encode_init ( &h->cabac, h->out.bs.p, h->out.bs.p_end );
2257         last_emu_check = h->cabac.p;
2258     }
2259     else
2260         last_emu_check = h->out.bs.p;
2261     h->mb.i_last_qp = h->sh.i_qp;
2262     h->mb.i_last_dqp = 0;
2263     h->mb.field_decoding_flag = 0;
2264
2265     i_mb_y = h->sh.i_first_mb / h->mb.i_mb_width;
2266     i_mb_x = h->sh.i_first_mb % h->mb.i_mb_width;
2267     i_skip = 0;
2268
2269     while( 1 )
2270     {
2271         mb_xy = i_mb_x + i_mb_y * h->mb.i_mb_width;
2272         int mb_spos = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2273
2274         if( i_mb_x == 0 )
2275         {
2276             if( x264_bitstream_check_buffer( h ) )
2277                 return -1;
2278             if( !(i_mb_y & SLICE_MBAFF) && h->param.rc.i_vbv_buffer_size )
2279                 x264_bitstream_backup( h, &bs_bak[1], i_skip, 1 );
2280             if( !h->mb.b_reencode_mb )
2281                 x264_fdec_filter_row( h, i_mb_y, 0 );
2282         }
2283
2284         if( !(i_mb_y & SLICE_MBAFF) && back_up_bitstream )
2285             x264_bitstream_backup( h, &bs_bak[0], i_skip, 0 );
2286
2287         if( PARAM_INTERLACED )
2288         {
2289             if( h->mb.b_adaptive_mbaff )
2290             {
2291                 if( !(i_mb_y&1) )
2292                 {
2293                     /* FIXME: VSAD is fast but fairly poor at choosing the best interlace type. */
2294                     h->mb.b_interlaced = x264_field_vsad( h, i_mb_x, i_mb_y );
2295                     memcpy( &h->zigzagf, MB_INTERLACED ? &h->zigzagf_interlaced : &h->zigzagf_progressive, sizeof(h->zigzagf) );
2296                     if( !MB_INTERLACED && (i_mb_y+2) == h->mb.i_mb_height )
2297                         x264_expand_border_mbpair( h, i_mb_x, i_mb_y );
2298                 }
2299             }
2300             h->mb.field[mb_xy] = MB_INTERLACED;
2301         }
2302
2303         /* load cache */
2304         if( SLICE_MBAFF )
2305             x264_macroblock_cache_load_interlaced( h, i_mb_x, i_mb_y );
2306         else
2307             x264_macroblock_cache_load_progressive( h, i_mb_x, i_mb_y );
2308
2309         x264_macroblock_analyse( h );
2310
2311         /* encode this macroblock -> be careful it can change the mb type to P_SKIP if needed */
2312 reencode:
2313         x264_macroblock_encode( h );
2314
2315         if( h->param.b_cabac )
2316         {
2317             if( mb_xy > h->sh.i_first_mb && !(SLICE_MBAFF && (i_mb_y&1)) )
2318                 x264_cabac_encode_terminal( &h->cabac );
2319
2320             if( IS_SKIP( h->mb.i_type ) )
2321                 x264_cabac_mb_skip( h, 1 );
2322             else
2323             {
2324                 if( h->sh.i_type != SLICE_TYPE_I )
2325                     x264_cabac_mb_skip( h, 0 );
2326                 x264_macroblock_write_cabac( h, &h->cabac );
2327             }
2328         }
2329         else
2330         {
2331             if( IS_SKIP( h->mb.i_type ) )
2332                 i_skip++;
2333             else
2334             {
2335                 if( h->sh.i_type != SLICE_TYPE_I )
2336                 {
2337                     bs_write_ue( &h->out.bs, i_skip );  /* skip run */
2338                     i_skip = 0;
2339                 }
2340                 x264_macroblock_write_cavlc( h );
2341                 /* If there was a CAVLC level code overflow, try again at a higher QP. */
2342                 if( h->mb.b_overflow )
2343                 {
2344                     h->mb.i_chroma_qp = h->chroma_qp_table[++h->mb.i_qp];
2345                     h->mb.i_skip_intra = 0;
2346                     h->mb.b_skip_mc = 0;
2347                     h->mb.b_overflow = 0;
2348                     x264_bitstream_restore( h, &bs_bak[0], &i_skip, 0 );
2349                     goto reencode;
2350                 }
2351             }
2352         }
2353
2354         int total_bits = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2355         int mb_size = total_bits - mb_spos;
2356
2357         if( slice_max_size && (!SLICE_MBAFF || (i_mb_y&1)) )
2358         {
2359             /* Count the skip run, just in case. */
2360             if( !h->param.b_cabac )
2361                 total_bits += bs_size_ue_big( i_skip );
2362             /* Check for escape bytes. */
2363             uint8_t *end = h->param.b_cabac ? h->cabac.p : h->out.bs.p;
2364             for( ; last_emu_check < end - 2; last_emu_check++ )
2365                 if( last_emu_check[0] == 0 && last_emu_check[1] == 0 && last_emu_check[2] <= 3 )
2366                 {
2367                     slice_max_size -= 8;
2368                     last_emu_check++;
2369                 }
2370             /* We'll just re-encode this last macroblock if we go over the max slice size. */
2371             if( total_bits - starting_bits > slice_max_size && !h->mb.b_reencode_mb )
2372             {
2373                 if( mb_xy-SLICE_MBAFF*h->mb.i_mb_stride != h->sh.i_first_mb )
2374                 {
2375                     x264_bitstream_restore( h, &bs_bak[0], &i_skip, 0 );
2376                     h->mb.b_reencode_mb = 1;
2377                     if( SLICE_MBAFF )
2378                     {
2379                         // set to bottom of previous mbpair
2380                         if( i_mb_x )
2381                             h->sh.i_last_mb = mb_xy-1+h->mb.i_mb_stride*(!(i_mb_y&1));
2382                         else
2383                             h->sh.i_last_mb = (i_mb_y-2+!(i_mb_y&1))*h->mb.i_mb_stride + h->mb.i_mb_width - 1;
2384                     }
2385                     else
2386                         h->sh.i_last_mb = mb_xy-1;
2387                     break;
2388                 }
2389                 else
2390                     h->sh.i_last_mb = mb_xy;
2391             }
2392         }
2393         h->mb.b_reencode_mb = 0;
2394
2395 #if HAVE_VISUALIZE
2396         if( h->param.b_visualize )
2397             x264_visualize_mb( h );
2398 #endif
2399
2400         /* save cache */
2401         x264_macroblock_cache_save( h );
2402
2403         if( x264_ratecontrol_mb( h, mb_size ) < 0 )
2404         {
2405             x264_bitstream_restore( h, &bs_bak[1], &i_skip, 1 );
2406             h->mb.b_reencode_mb = 1;
2407             i_mb_x = 0;
2408             i_mb_y = i_mb_y - SLICE_MBAFF;
2409             h->mb.i_mb_prev_xy = i_mb_y * h->mb.i_mb_stride - 1;
2410             h->sh.i_last_mb = orig_last_mb;
2411             continue;
2412         }
2413
2414         /* accumulate mb stats */
2415         h->stat.frame.i_mb_count[h->mb.i_type]++;
2416
2417         int b_intra = IS_INTRA( h->mb.i_type );
2418         int b_skip = IS_SKIP( h->mb.i_type );
2419         if( h->param.i_log_level >= X264_LOG_INFO || h->param.rc.b_stat_write )
2420         {
2421             if( !b_intra && !b_skip && !IS_DIRECT( h->mb.i_type ) )
2422             {
2423                 if( h->mb.i_partition != D_8x8 )
2424                         h->stat.frame.i_mb_partition[h->mb.i_partition] += 4;
2425                     else
2426                         for( int i = 0; i < 4; i++ )
2427                             h->stat.frame.i_mb_partition[h->mb.i_sub_partition[i]] ++;
2428                 if( h->param.i_frame_reference > 1 )
2429                     for( int i_list = 0; i_list <= (h->sh.i_type == SLICE_TYPE_B); i_list++ )
2430                         for( int i = 0; i < 4; i++ )
2431                         {
2432                             int i_ref = h->mb.cache.ref[i_list][ x264_scan8[4*i] ];
2433                             if( i_ref >= 0 )
2434                                 h->stat.frame.i_mb_count_ref[i_list][i_ref] ++;
2435                         }
2436             }
2437         }
2438
2439         if( h->param.i_log_level >= X264_LOG_INFO )
2440         {
2441             if( h->mb.i_cbp_luma | h->mb.i_cbp_chroma )
2442             {
2443                 if( CHROMA444 )
2444                 {
2445                     for( int i = 0; i < 4; i++ )
2446                         if( h->mb.i_cbp_luma & (1 << i) )
2447                             for( int p = 0; p < 3; p++ )
2448                             {
2449                                 int s8 = i*4+p*16;
2450                                 int nnz8x8 = M16( &h->mb.cache.non_zero_count[x264_scan8[s8]+0] )
2451                                            | M16( &h->mb.cache.non_zero_count[x264_scan8[s8]+8] );
2452                                 h->stat.frame.i_mb_cbp[!b_intra + p*2] += !!nnz8x8;
2453                             }
2454                 }
2455                 else
2456                 {
2457                     int cbpsum = (h->mb.i_cbp_luma&1) + ((h->mb.i_cbp_luma>>1)&1)
2458                                + ((h->mb.i_cbp_luma>>2)&1) + (h->mb.i_cbp_luma>>3);
2459                     h->stat.frame.i_mb_cbp[!b_intra + 0] += cbpsum;
2460                     h->stat.frame.i_mb_cbp[!b_intra + 2] += !!h->mb.i_cbp_chroma;
2461                     h->stat.frame.i_mb_cbp[!b_intra + 4] += h->mb.i_cbp_chroma >> 1;
2462                 }
2463             }
2464             if( h->mb.i_cbp_luma && !b_intra )
2465             {
2466                 h->stat.frame.i_mb_count_8x8dct[0] ++;
2467                 h->stat.frame.i_mb_count_8x8dct[1] += h->mb.b_transform_8x8;
2468             }
2469             if( b_intra && h->mb.i_type != I_PCM )
2470             {
2471                 if( h->mb.i_type == I_16x16 )
2472                     h->stat.frame.i_mb_pred_mode[0][h->mb.i_intra16x16_pred_mode]++;
2473                 else if( h->mb.i_type == I_8x8 )
2474                     for( int i = 0; i < 16; i += 4 )
2475                         h->stat.frame.i_mb_pred_mode[1][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2476                 else //if( h->mb.i_type == I_4x4 )
2477                     for( int i = 0; i < 16; i++ )
2478                         h->stat.frame.i_mb_pred_mode[2][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2479                 h->stat.frame.i_mb_pred_mode[3][x264_mb_chroma_pred_mode_fix[h->mb.i_chroma_pred_mode]]++;
2480             }
2481             h->stat.frame.i_mb_field[b_intra?0:b_skip?2:1] += MB_INTERLACED;
2482         }
2483
2484         /* calculate deblock strength values (actual deblocking is done per-row along with hpel) */
2485         if( b_deblock )
2486             x264_macroblock_deblock_strength( h );
2487
2488         if( mb_xy == h->sh.i_last_mb )
2489             break;
2490
2491         if( SLICE_MBAFF )
2492         {
2493             i_mb_x += i_mb_y & 1;
2494             i_mb_y ^= i_mb_x < h->mb.i_mb_width;
2495         }
2496         else
2497             i_mb_x++;
2498         if( i_mb_x == h->mb.i_mb_width )
2499         {
2500             i_mb_y++;
2501             i_mb_x = 0;
2502         }
2503     }
2504     h->out.nal[h->out.i_nal].i_last_mb = h->sh.i_last_mb;
2505
2506     if( h->param.b_cabac )
2507     {
2508         x264_cabac_encode_flush( h, &h->cabac );
2509         h->out.bs.p = h->cabac.p;
2510     }
2511     else
2512     {
2513         if( i_skip > 0 )
2514             bs_write_ue( &h->out.bs, i_skip );  /* last skip run */
2515         /* rbsp_slice_trailing_bits */
2516         bs_rbsp_trailing( &h->out.bs );
2517         bs_flush( &h->out.bs );
2518     }
2519     if( x264_nal_end( h ) )
2520         return -1;
2521
2522     if( h->sh.i_last_mb == (h->i_threadslice_end * h->mb.i_mb_width - 1) )
2523     {
2524         h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
2525                                   + (h->out.i_nal*NALU_OVERHEAD * 8)
2526                                   - h->stat.frame.i_tex_bits
2527                                   - h->stat.frame.i_mv_bits;
2528         x264_fdec_filter_row( h, h->i_threadslice_end, 0 );
2529
2530         if( h->param.b_sliced_threads )
2531         {
2532             /* Tell the main thread we're done. */
2533             x264_threadslice_cond_broadcast( h, 1 );
2534             /* Do hpel now */
2535             for( int mb_y = h->i_threadslice_start; mb_y <= h->i_threadslice_end; mb_y++ )
2536                 x264_fdec_filter_row( h, mb_y, 1 );
2537             x264_threadslice_cond_broadcast( h, 2 );
2538             /* Do the first row of hpel, now that the previous slice is done */
2539             if( h->i_thread_idx > 0 )
2540             {
2541                 x264_threadslice_cond_wait( h->thread[h->i_thread_idx-1], 2 );
2542                 x264_fdec_filter_row( h, h->i_threadslice_start + (1 << SLICE_MBAFF), 2 );
2543             }
2544         }
2545     }
2546
2547     return 0;
2548 }
2549
2550 static void x264_thread_sync_context( x264_t *dst, x264_t *src )
2551 {
2552     if( dst == src )
2553         return;
2554
2555     // reference counting
2556     for( x264_frame_t **f = src->frames.reference; *f; f++ )
2557         (*f)->i_reference_count++;
2558     for( x264_frame_t **f = dst->frames.reference; *f; f++ )
2559         x264_frame_push_unused( src, *f );
2560     src->fdec->i_reference_count++;
2561     x264_frame_push_unused( src, dst->fdec );
2562
2563     // copy everything except the per-thread pointers and the constants.
2564     memcpy( &dst->i_frame, &src->i_frame, offsetof(x264_t, mb.type) - offsetof(x264_t, i_frame) );
2565     dst->param = src->param;
2566     dst->stat = src->stat;
2567     dst->pixf = src->pixf;
2568 }
2569
2570 static void x264_thread_sync_stat( x264_t *dst, x264_t *src )
2571 {
2572     if( dst == src )
2573         return;
2574     memcpy( &dst->stat.i_frame_count, &src->stat.i_frame_count, sizeof(dst->stat) - sizeof(dst->stat.frame) );
2575 }
2576
2577 static void *x264_slices_write( x264_t *h )
2578 {
2579     int i_slice_num = 0;
2580     int last_thread_mb = h->sh.i_last_mb;
2581
2582 #if HAVE_VISUALIZE
2583     if( h->param.b_visualize )
2584         if( x264_visualize_init( h ) )
2585             goto fail;
2586 #endif
2587
2588     /* init stats */
2589     memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
2590     h->mb.b_reencode_mb = 0;
2591     while( h->sh.i_first_mb + SLICE_MBAFF*h->mb.i_mb_stride <= last_thread_mb )
2592     {
2593         h->sh.i_last_mb = last_thread_mb;
2594         if( h->param.i_slice_max_mbs )
2595         {
2596             if( SLICE_MBAFF )
2597             {
2598                 // convert first to mbaff form, add slice-max-mbs, then convert back to normal form
2599                 int last_mbaff = 2*(h->sh.i_first_mb % h->mb.i_mb_width)
2600                     + h->mb.i_mb_width*(h->sh.i_first_mb / h->mb.i_mb_width)
2601                     + h->param.i_slice_max_mbs - 1;
2602                 int last_x = (last_mbaff % (2*h->mb.i_mb_width))/2;
2603                 int last_y = (last_mbaff / (2*h->mb.i_mb_width))*2 + 1;
2604                 h->sh.i_last_mb = last_x + h->mb.i_mb_stride*last_y;
2605             }
2606             else
2607                 h->sh.i_last_mb = h->sh.i_first_mb + h->param.i_slice_max_mbs - 1;
2608         }
2609         else if( h->param.i_slice_count && !h->param.b_sliced_threads )
2610         {
2611             int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2612             int width = h->mb.i_mb_width << PARAM_INTERLACED;
2613             i_slice_num++;
2614             h->sh.i_last_mb = (height * i_slice_num + h->param.i_slice_count/2) / h->param.i_slice_count * width - 1;
2615         }
2616         h->sh.i_last_mb = X264_MIN( h->sh.i_last_mb, last_thread_mb );
2617         if( x264_stack_align( x264_slice_write, h ) )
2618             goto fail;
2619         h->sh.i_first_mb = h->sh.i_last_mb + 1;
2620         // if i_first_mb is not the last mb in a row then go to the next mb in MBAFF order
2621         if( SLICE_MBAFF && h->sh.i_first_mb % h->mb.i_mb_width )
2622             h->sh.i_first_mb -= h->mb.i_mb_stride;
2623     }
2624
2625 #if HAVE_VISUALIZE
2626     if( h->param.b_visualize )
2627     {
2628         x264_visualize_show( h );
2629         x264_visualize_close( h );
2630     }
2631 #endif
2632
2633     return (void *)0;
2634
2635 fail:
2636     /* Tell other threads we're done, so they wouldn't wait for it */
2637     if( h->param.b_sliced_threads )
2638         x264_threadslice_cond_broadcast( h, 2 );
2639     return (void *)-1;
2640 }
2641
2642 static int x264_threaded_slices_write( x264_t *h )
2643 {
2644     /* set first/last mb and sync contexts */
2645     for( int i = 0; i < h->param.i_threads; i++ )
2646     {
2647         x264_t *t = h->thread[i];
2648         if( i )
2649         {
2650             t->param = h->param;
2651             memcpy( &t->i_frame, &h->i_frame, offsetof(x264_t, rc) - offsetof(x264_t, i_frame) );
2652         }
2653         int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2654         t->i_threadslice_start = ((height *  i    + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2655         t->i_threadslice_end   = ((height * (i+1) + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2656         t->sh.i_first_mb = t->i_threadslice_start * h->mb.i_mb_width;
2657         t->sh.i_last_mb  =   t->i_threadslice_end * h->mb.i_mb_width - 1;
2658     }
2659
2660     x264_stack_align( x264_analyse_weight_frame, h, h->mb.i_mb_height*16 + 16 );
2661
2662     x264_threads_distribute_ratecontrol( h );
2663
2664     /* setup */
2665     for( int i = 0; i < h->param.i_threads; i++ )
2666     {
2667         h->thread[i]->i_thread_idx = i;
2668         h->thread[i]->b_thread_active = 1;
2669         x264_threadslice_cond_broadcast( h->thread[i], 0 );
2670     }
2671     /* dispatch */
2672     for( int i = 0; i < h->param.i_threads; i++ )
2673         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h->thread[i] );
2674     /* wait */
2675     for( int i = 0; i < h->param.i_threads; i++ )
2676         x264_threadslice_cond_wait( h->thread[i], 1 );
2677
2678     x264_threads_merge_ratecontrol( h );
2679
2680     for( int i = 1; i < h->param.i_threads; i++ )
2681     {
2682         x264_t *t = h->thread[i];
2683         for( int j = 0; j < t->out.i_nal; j++ )
2684         {
2685             h->out.nal[h->out.i_nal] = t->out.nal[j];
2686             h->out.i_nal++;
2687             x264_nal_check_buffer( h );
2688         }
2689         /* All entries in stat.frame are ints except for ssd/ssim. */
2690         for( int j = 0; j < (offsetof(x264_t,stat.frame.i_ssd) - offsetof(x264_t,stat.frame.i_mv_bits)) / sizeof(int); j++ )
2691             ((int*)&h->stat.frame)[j] += ((int*)&t->stat.frame)[j];
2692         for( int j = 0; j < 3; j++ )
2693             h->stat.frame.i_ssd[j] += t->stat.frame.i_ssd[j];
2694         h->stat.frame.f_ssim += t->stat.frame.f_ssim;
2695         h->stat.frame.i_ssim_cnt += t->stat.frame.i_ssim_cnt;
2696     }
2697
2698     return 0;
2699 }
2700
2701 void x264_encoder_intra_refresh( x264_t *h )
2702 {
2703     h = h->thread[h->i_thread_phase];
2704     h->b_queued_intra_refresh = 1;
2705 }
2706
2707 int x264_encoder_invalidate_reference( x264_t *h, int64_t pts )
2708 {
2709     if( h->param.i_bframe )
2710     {
2711         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with B-frames enabled\n" );
2712         return -1;
2713     }
2714     if( h->param.b_intra_refresh )
2715     {
2716         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with intra refresh enabled\n" );
2717         return -1;
2718     }
2719     h = h->thread[h->i_thread_phase];
2720     if( pts >= h->i_last_idr_pts )
2721     {
2722         for( int i = 0; h->frames.reference[i]; i++ )
2723             if( pts <= h->frames.reference[i]->i_pts )
2724                 h->frames.reference[i]->b_corrupt = 1;
2725         if( pts <= h->fdec->i_pts )
2726             h->fdec->b_corrupt = 1;
2727     }
2728     return 0;
2729 }
2730
2731 /****************************************************************************
2732  * x264_encoder_encode:
2733  *  XXX: i_poc   : is the poc of the current given picture
2734  *       i_frame : is the number of the frame being coded
2735  *  ex:  type frame poc
2736  *       I      0   2*0
2737  *       P      1   2*3
2738  *       B      2   2*1
2739  *       B      3   2*2
2740  *       P      4   2*6
2741  *       B      5   2*4
2742  *       B      6   2*5
2743  ****************************************************************************/
2744 int     x264_encoder_encode( x264_t *h,
2745                              x264_nal_t **pp_nal, int *pi_nal,
2746                              x264_picture_t *pic_in,
2747                              x264_picture_t *pic_out )
2748 {
2749     x264_t *thread_current, *thread_prev, *thread_oldest;
2750     int i_nal_type, i_nal_ref_idc, i_global_qp;
2751     int overhead = NALU_OVERHEAD;
2752
2753     if( h->i_thread_frames > 1 )
2754     {
2755         thread_prev    = h->thread[ h->i_thread_phase ];
2756         h->i_thread_phase = (h->i_thread_phase + 1) % h->i_thread_frames;
2757         thread_current = h->thread[ h->i_thread_phase ];
2758         thread_oldest  = h->thread[ (h->i_thread_phase + 1) % h->i_thread_frames ];
2759         x264_thread_sync_context( thread_current, thread_prev );
2760         x264_thread_sync_ratecontrol( thread_current, thread_prev, thread_oldest );
2761         h = thread_current;
2762     }
2763     else
2764     {
2765         thread_current =
2766         thread_oldest  = h;
2767     }
2768 #if HAVE_MMX
2769     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
2770         x264_cpu_mask_misalign_sse();
2771 #endif
2772     h->i_cpb_delay_pir_offset = h->i_cpb_delay_pir_offset_next;
2773
2774     /* no data out */
2775     *pi_nal = 0;
2776     *pp_nal = NULL;
2777
2778     /* ------------------- Setup new frame from picture -------------------- */
2779     if( pic_in != NULL )
2780     {
2781         /* 1: Copy the picture to a frame and move it to a buffer */
2782         x264_frame_t *fenc = x264_frame_pop_unused( h, 0 );
2783         if( !fenc )
2784             return -1;
2785
2786         if( x264_frame_copy_picture( h, fenc, pic_in ) < 0 )
2787             return -1;
2788
2789         if( h->param.i_width != 16 * h->mb.i_mb_width ||
2790             h->param.i_height != 16 * h->mb.i_mb_height )
2791             x264_frame_expand_border_mod16( h, fenc );
2792
2793         fenc->i_frame = h->frames.i_input++;
2794
2795         if( fenc->i_frame == 0 )
2796             h->frames.i_first_pts = fenc->i_pts;
2797         if( h->frames.i_bframe_delay && fenc->i_frame == h->frames.i_bframe_delay )
2798             h->frames.i_bframe_delay_time = fenc->i_pts - h->frames.i_first_pts;
2799
2800         if( h->param.b_vfr_input && fenc->i_pts <= h->frames.i_largest_pts )
2801             x264_log( h, X264_LOG_WARNING, "non-strictly-monotonic PTS\n" );
2802
2803         h->frames.i_second_largest_pts = h->frames.i_largest_pts;
2804         h->frames.i_largest_pts = fenc->i_pts;
2805
2806         if( (fenc->i_pic_struct < PIC_STRUCT_AUTO) || (fenc->i_pic_struct > PIC_STRUCT_TRIPLE) )
2807             fenc->i_pic_struct = PIC_STRUCT_AUTO;
2808
2809         if( fenc->i_pic_struct == PIC_STRUCT_AUTO )
2810         {
2811 #if HAVE_INTERLACED
2812             int b_interlaced = fenc->param ? fenc->param->b_interlaced : h->param.b_interlaced;
2813 #else
2814             int b_interlaced = 0;
2815 #endif
2816             if( b_interlaced )
2817             {
2818                 int b_tff = fenc->param ? fenc->param->b_tff : h->param.b_tff;
2819                 fenc->i_pic_struct = b_tff ? PIC_STRUCT_TOP_BOTTOM : PIC_STRUCT_BOTTOM_TOP;
2820             }
2821             else
2822                 fenc->i_pic_struct = PIC_STRUCT_PROGRESSIVE;
2823         }
2824
2825         if( h->param.rc.b_mb_tree && h->param.rc.b_stat_read )
2826         {
2827             if( x264_macroblock_tree_read( h, fenc, pic_in->prop.quant_offsets ) )
2828                 return -1;
2829         }
2830         else
2831             x264_stack_align( x264_adaptive_quant_frame, h, fenc, pic_in->prop.quant_offsets );
2832
2833         if( pic_in->prop.quant_offsets_free )
2834             pic_in->prop.quant_offsets_free( pic_in->prop.quant_offsets );
2835
2836         if( h->frames.b_have_lowres )
2837             x264_frame_init_lowres( h, fenc );
2838
2839         /* 2: Place the frame into the queue for its slice type decision */
2840         x264_lookahead_put_frame( h, fenc );
2841
2842         if( h->frames.i_input <= h->frames.i_delay + 1 - h->i_thread_frames )
2843         {
2844             /* Nothing yet to encode, waiting for filling of buffers */
2845             pic_out->i_type = X264_TYPE_AUTO;
2846             return 0;
2847         }
2848     }
2849     else
2850     {
2851         /* signal kills for lookahead thread */
2852         x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
2853         h->lookahead->b_exit_thread = 1;
2854         x264_pthread_cond_broadcast( &h->lookahead->ifbuf.cv_fill );
2855         x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
2856     }
2857
2858     h->i_frame++;
2859     /* 3: The picture is analyzed in the lookahead */
2860     if( !h->frames.current[0] )
2861         x264_lookahead_get_frames( h );
2862
2863     if( !h->frames.current[0] && x264_lookahead_is_empty( h ) )
2864         return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
2865
2866     /* ------------------- Get frame to be encoded ------------------------- */
2867     /* 4: get picture to encode */
2868     h->fenc = x264_frame_shift( h->frames.current );
2869
2870     /* If applicable, wait for previous frame reconstruction to finish */
2871     if( h->param.b_sliced_threads )
2872         if( x264_threadpool_wait_all( h ) < 0 )
2873             return -1;
2874
2875     if( h->i_frame == h->i_thread_frames - 1 )
2876         h->i_reordered_pts_delay = h->fenc->i_reordered_pts;
2877     if( h->fenc->param )
2878     {
2879         x264_encoder_reconfig( h, h->fenc->param );
2880         if( h->fenc->param->param_free )
2881         {
2882             h->fenc->param->param_free( h->fenc->param );
2883             h->fenc->param = NULL;
2884         }
2885     }
2886
2887     // ok to call this before encoding any frames, since the initial values of fdec have b_kept_as_ref=0
2888     if( x264_reference_update( h ) )
2889         return -1;
2890     h->fdec->i_lines_completed = -1;
2891
2892     if( !IS_X264_TYPE_I( h->fenc->i_type ) )
2893     {
2894         int valid_refs_left = 0;
2895         for( int i = 0; h->frames.reference[i]; i++ )
2896             if( !h->frames.reference[i]->b_corrupt )
2897                 valid_refs_left++;
2898         /* No valid reference frames left: force an IDR. */
2899         if( !valid_refs_left )
2900         {
2901             h->fenc->b_keyframe = 1;
2902             h->fenc->i_type = X264_TYPE_IDR;
2903         }
2904     }
2905
2906     if( h->fenc->b_keyframe )
2907     {
2908         h->frames.i_last_keyframe = h->fenc->i_frame;
2909         if( h->fenc->i_type == X264_TYPE_IDR )
2910         {
2911             h->i_frame_num = 0;
2912             h->frames.i_last_idr = h->fenc->i_frame;
2913         }
2914     }
2915     h->sh.i_mmco_command_count =
2916     h->sh.i_mmco_remove_from_end = 0;
2917     h->b_ref_reorder[0] =
2918     h->b_ref_reorder[1] = 0;
2919     h->fdec->i_poc =
2920     h->fenc->i_poc = 2 * ( h->fenc->i_frame - X264_MAX( h->frames.i_last_idr, 0 ) );
2921
2922     /* ------------------- Setup frame context ----------------------------- */
2923     /* 5: Init data dependent of frame type */
2924     if( h->fenc->i_type == X264_TYPE_IDR )
2925     {
2926         /* reset ref pictures */
2927         i_nal_type    = NAL_SLICE_IDR;
2928         i_nal_ref_idc = NAL_PRIORITY_HIGHEST;
2929         h->sh.i_type = SLICE_TYPE_I;
2930         x264_reference_reset( h );
2931         h->frames.i_poc_last_open_gop = -1;
2932     }
2933     else if( h->fenc->i_type == X264_TYPE_I )
2934     {
2935         i_nal_type    = NAL_SLICE;
2936         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2937         h->sh.i_type = SLICE_TYPE_I;
2938         x264_reference_hierarchy_reset( h );
2939         if( h->param.b_open_gop )
2940             h->frames.i_poc_last_open_gop = h->fenc->b_keyframe ? h->fenc->i_poc : -1;
2941     }
2942     else if( h->fenc->i_type == X264_TYPE_P )
2943     {
2944         i_nal_type    = NAL_SLICE;
2945         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2946         h->sh.i_type = SLICE_TYPE_P;
2947         x264_reference_hierarchy_reset( h );
2948         h->frames.i_poc_last_open_gop = -1;
2949     }
2950     else if( h->fenc->i_type == X264_TYPE_BREF )
2951     {
2952         i_nal_type    = NAL_SLICE;
2953         i_nal_ref_idc = h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT ? NAL_PRIORITY_LOW : NAL_PRIORITY_HIGH;
2954         h->sh.i_type = SLICE_TYPE_B;
2955         x264_reference_hierarchy_reset( h );
2956     }
2957     else    /* B frame */
2958     {
2959         i_nal_type    = NAL_SLICE;
2960         i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
2961         h->sh.i_type = SLICE_TYPE_B;
2962     }
2963
2964     h->fdec->i_type = h->fenc->i_type;
2965     h->fdec->i_frame = h->fenc->i_frame;
2966     h->fenc->b_kept_as_ref =
2967     h->fdec->b_kept_as_ref = i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE && h->param.i_keyint_max > 1;
2968
2969     h->fdec->i_pts = h->fenc->i_pts;
2970     if( h->frames.i_bframe_delay )
2971     {
2972         int64_t *prev_reordered_pts = thread_current->frames.i_prev_reordered_pts;
2973         h->fdec->i_dts = h->i_frame > h->frames.i_bframe_delay
2974                        ? prev_reordered_pts[ (h->i_frame - h->frames.i_bframe_delay) % h->frames.i_bframe_delay ]
2975                        : h->fenc->i_reordered_pts - h->frames.i_bframe_delay_time;
2976         prev_reordered_pts[ h->i_frame % h->frames.i_bframe_delay ] = h->fenc->i_reordered_pts;
2977     }
2978     else
2979         h->fdec->i_dts = h->fenc->i_reordered_pts;
2980     if( h->fenc->i_type == X264_TYPE_IDR )
2981         h->i_last_idr_pts = h->fdec->i_pts;
2982
2983     /* ------------------- Init                ----------------------------- */
2984     /* build ref list 0/1 */
2985     x264_reference_build_list( h, h->fdec->i_poc );
2986
2987     /* ---------------------- Write the bitstream -------------------------- */
2988     /* Init bitstream context */
2989     if( h->param.b_sliced_threads )
2990     {
2991         for( int i = 0; i < h->param.i_threads; i++ )
2992         {
2993             bs_init( &h->thread[i]->out.bs, h->thread[i]->out.p_bitstream, h->thread[i]->out.i_bitstream );
2994             h->thread[i]->out.i_nal = 0;
2995         }
2996     }
2997     else
2998     {
2999         bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
3000         h->out.i_nal = 0;
3001     }
3002
3003     if( h->param.b_aud )
3004     {
3005         int pic_type;
3006
3007         if( h->sh.i_type == SLICE_TYPE_I )
3008             pic_type = 0;
3009         else if( h->sh.i_type == SLICE_TYPE_P )
3010             pic_type = 1;
3011         else if( h->sh.i_type == SLICE_TYPE_B )
3012             pic_type = 2;
3013         else
3014             pic_type = 7;
3015
3016         x264_nal_start( h, NAL_AUD, NAL_PRIORITY_DISPOSABLE );
3017         bs_write( &h->out.bs, 3, pic_type );
3018         bs_rbsp_trailing( &h->out.bs );
3019         if( x264_nal_end( h ) )
3020             return -1;
3021         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3022     }
3023
3024     h->i_nal_type = i_nal_type;
3025     h->i_nal_ref_idc = i_nal_ref_idc;
3026
3027     if( h->param.b_intra_refresh )
3028     {
3029         if( IS_X264_TYPE_I( h->fenc->i_type ) )
3030         {
3031             h->fdec->i_frames_since_pir = 0;
3032             h->b_queued_intra_refresh = 0;
3033             /* PIR is currently only supported with ref == 1, so any intra frame effectively refreshes
3034              * the whole frame and counts as an intra refresh. */
3035             h->fdec->f_pir_position = h->mb.i_mb_width;
3036         }
3037         else if( h->fenc->i_type == X264_TYPE_P )
3038         {
3039             int pocdiff = (h->fdec->i_poc - h->fref[0][0]->i_poc)/2;
3040             float increment = X264_MAX( ((float)h->mb.i_mb_width-1) / h->param.i_keyint_max, 1 );
3041             h->fdec->f_pir_position = h->fref[0][0]->f_pir_position;
3042             h->fdec->i_frames_since_pir = h->fref[0][0]->i_frames_since_pir + pocdiff;
3043             if( h->fdec->i_frames_since_pir >= h->param.i_keyint_max ||
3044                 (h->b_queued_intra_refresh && h->fdec->f_pir_position + 0.5 >= h->mb.i_mb_width) )
3045             {
3046                 h->fdec->f_pir_position = 0;
3047                 h->fdec->i_frames_since_pir = 0;
3048                 h->b_queued_intra_refresh = 0;
3049                 h->fenc->b_keyframe = 1;
3050             }
3051             h->fdec->i_pir_start_col = h->fdec->f_pir_position+0.5;
3052             h->fdec->f_pir_position += increment * pocdiff;
3053             h->fdec->i_pir_end_col = h->fdec->f_pir_position+0.5;
3054             /* If our intra refresh has reached the right side of the frame, we're done. */
3055             if( h->fdec->i_pir_end_col >= h->mb.i_mb_width - 1 )
3056             {
3057                 h->fdec->f_pir_position = h->mb.i_mb_width;
3058                 h->fdec->i_pir_end_col = h->mb.i_mb_width - 1;
3059             }
3060         }
3061     }
3062
3063     if( h->fenc->b_keyframe )
3064     {
3065         /* Write SPS and PPS */
3066         if( h->param.b_repeat_headers )
3067         {
3068             /* generate sequence parameters */
3069             x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
3070             x264_sps_write( &h->out.bs, h->sps );
3071             if( x264_nal_end( h ) )
3072                 return -1;
3073             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
3074
3075             /* generate picture parameters */
3076             x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
3077             x264_pps_write( &h->out.bs, h->sps, h->pps );
3078             if( x264_nal_end( h ) )
3079                 return -1;
3080             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
3081         }
3082
3083         /* when frame threading is used, buffering period sei is written in x264_encoder_frame_end */
3084         if( h->i_thread_frames == 1 && h->sps->vui.b_nal_hrd_parameters_present )
3085         {
3086             x264_hrd_fullness( h );
3087             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3088             x264_sei_buffering_period_write( h, &h->out.bs );
3089             if( x264_nal_end( h ) )
3090                return -1;
3091             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
3092         }
3093     }
3094
3095     /* write extra sei */
3096     for( int i = 0; i < h->fenc->extra_sei.num_payloads; i++ )
3097     {
3098         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3099         x264_sei_write( &h->out.bs, h->fenc->extra_sei.payloads[i].payload, h->fenc->extra_sei.payloads[i].payload_size,
3100                         h->fenc->extra_sei.payloads[i].payload_type );
3101         if( x264_nal_end( h ) )
3102             return -1;
3103         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3104         if( h->fenc->extra_sei.sei_free )
3105         {
3106             h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads[i].payload );
3107             h->fenc->extra_sei.payloads[i].payload = NULL;
3108         }
3109     }
3110
3111     if( h->fenc->extra_sei.sei_free )
3112     {
3113         h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads );
3114         h->fenc->extra_sei.payloads = NULL;
3115         h->fenc->extra_sei.sei_free = NULL;
3116     }
3117
3118     if( h->fenc->b_keyframe )
3119     {
3120         if( h->param.b_repeat_headers && h->fenc->i_frame == 0 )
3121         {
3122             /* identify ourself */
3123             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3124             if( x264_sei_version_write( h, &h->out.bs ) )
3125                 return -1;
3126             if( x264_nal_end( h ) )
3127                 return -1;
3128             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3129         }
3130
3131         if( h->fenc->i_type != X264_TYPE_IDR )
3132         {
3133             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;
3134             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3135             x264_sei_recovery_point_write( h, &h->out.bs, time_to_recovery );
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->param.i_frame_packing >= 0 )
3142         {
3143             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3144             x264_sei_frame_packing_write( h, &h->out.bs );
3145             if( x264_nal_end( h ) )
3146                 return -1;
3147             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3148         }
3149     }
3150
3151     /* generate sei pic timing */
3152     if( h->sps->vui.b_pic_struct_present || h->sps->vui.b_nal_hrd_parameters_present )
3153     {
3154         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3155         x264_sei_pic_timing_write( h, &h->out.bs );
3156         if( x264_nal_end( h ) )
3157             return -1;
3158         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3159     }
3160
3161     /* As required by Blu-ray. */
3162     if( !IS_X264_TYPE_B( h->fenc->i_type ) && h->b_sh_backup )
3163     {
3164         h->b_sh_backup = 0;
3165         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3166         x264_sei_dec_ref_pic_marking_write( h, &h->out.bs );
3167         if( x264_nal_end( h ) )
3168             return -1;
3169         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3170     }
3171
3172     if( h->fenc->b_keyframe && h->param.b_intra_refresh )
3173         h->i_cpb_delay_pir_offset_next = h->fenc->i_cpb_delay;
3174
3175     /* Init the rate control */
3176     /* FIXME: Include slice header bit cost. */
3177     x264_ratecontrol_start( h, h->fenc->i_qpplus1, overhead*8 );
3178     i_global_qp = x264_ratecontrol_qp( h );
3179
3180     pic_out->i_qpplus1 =
3181     h->fdec->i_qpplus1 = i_global_qp + 1;
3182
3183     if( h->param.rc.b_stat_read && h->sh.i_type != SLICE_TYPE_I )
3184     {
3185         x264_reference_build_list_optimal( h );
3186         x264_reference_check_reorder( h );
3187     }
3188
3189     if( h->i_ref[0] )
3190         h->fdec->i_poc_l0ref0 = h->fref[0][0]->i_poc;
3191
3192     /* ------------------------ Create slice header  ----------------------- */
3193     x264_slice_init( h, i_nal_type, i_global_qp );
3194
3195     /*------------------------- Weights -------------------------------------*/
3196     if( h->sh.i_type == SLICE_TYPE_B )
3197         x264_macroblock_bipred_init( h );
3198
3199     x264_weighted_pred_init( h );
3200
3201     if( i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE )
3202         h->i_frame_num++;
3203
3204     /* Write frame */
3205     h->i_threadslice_start = 0;
3206     h->i_threadslice_end = h->mb.i_mb_height;
3207     if( h->i_thread_frames > 1 )
3208     {
3209         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h );
3210         h->b_thread_active = 1;
3211     }
3212     else if( h->param.b_sliced_threads )
3213     {
3214         if( x264_threaded_slices_write( h ) )
3215             return -1;
3216     }
3217     else
3218         if( (intptr_t)x264_slices_write( h ) )
3219             return -1;
3220
3221     return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
3222 }
3223
3224 static int x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
3225                                    x264_nal_t **pp_nal, int *pi_nal,
3226                                    x264_picture_t *pic_out )
3227 {
3228     char psz_message[80];
3229
3230     if( !h->param.b_sliced_threads && h->b_thread_active )
3231     {
3232         h->b_thread_active = 0;
3233         if( (intptr_t)x264_threadpool_wait( h->threadpool, h ) )
3234             return -1;
3235     }
3236     if( !h->out.i_nal )
3237     {
3238         pic_out->i_type = X264_TYPE_AUTO;
3239         return 0;
3240     }
3241
3242     x264_emms();
3243
3244     if( h->fenc->mb_info_free )
3245     {
3246         h->fenc->mb_info_free( h->fenc->mb_info );
3247         h->fenc->mb_info = NULL;
3248         h->fenc->mb_info_free = NULL;
3249     }
3250
3251     /* generate buffering period sei and insert it into place */
3252     if( h->i_thread_frames > 1 && h->fenc->b_keyframe && h->sps->vui.b_nal_hrd_parameters_present )
3253     {
3254         x264_hrd_fullness( h );
3255         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3256         x264_sei_buffering_period_write( h, &h->out.bs );
3257         if( x264_nal_end( h ) )
3258            return -1;
3259         /* buffering period sei must follow AUD, SPS and PPS and precede all other SEIs */
3260         int idx = 0;
3261         while( h->out.nal[idx].i_type == NAL_AUD ||
3262                h->out.nal[idx].i_type == NAL_SPS ||
3263                h->out.nal[idx].i_type == NAL_PPS )
3264             idx++;
3265         x264_nal_t nal_tmp = h->out.nal[h->out.i_nal-1];
3266         memmove( &h->out.nal[idx+1], &h->out.nal[idx], (h->out.i_nal-idx-1)*sizeof(x264_nal_t) );
3267         h->out.nal[idx] = nal_tmp;
3268     }
3269
3270     int frame_size = x264_encoder_encapsulate_nals( h, 0 );
3271     if( frame_size < 0 )
3272         return -1;
3273
3274     /* Set output picture properties */
3275     pic_out->i_type = h->fenc->i_type;
3276
3277     pic_out->b_keyframe = h->fenc->b_keyframe;
3278     pic_out->i_pic_struct = h->fenc->i_pic_struct;
3279
3280     pic_out->i_pts = h->fdec->i_pts;
3281     pic_out->i_dts = h->fdec->i_dts;
3282
3283     if( pic_out->i_pts < pic_out->i_dts )
3284         x264_log( h, X264_LOG_WARNING, "invalid DTS: PTS is less than DTS\n" );
3285
3286     pic_out->opaque = h->fenc->opaque;
3287
3288     pic_out->img.i_csp = h->fdec->i_csp;
3289 #if HIGH_BIT_DEPTH
3290     pic_out->img.i_csp |= X264_CSP_HIGH_DEPTH;
3291 #endif
3292     pic_out->img.i_plane = h->fdec->i_plane;
3293     for( int i = 0; i < pic_out->img.i_plane; i++ )
3294     {
3295         pic_out->img.i_stride[i] = h->fdec->i_stride[i] * sizeof(pixel);
3296         pic_out->img.plane[i] = (uint8_t*)h->fdec->plane[i];
3297     }
3298
3299     x264_frame_push_unused( thread_current, h->fenc );
3300
3301     /* ---------------------- Update encoder state ------------------------- */
3302
3303     /* update rc */
3304     int filler = 0;
3305     if( x264_ratecontrol_end( h, frame_size * 8, &filler ) < 0 )
3306         return -1;
3307
3308     pic_out->hrd_timing = h->fenc->hrd_timing;
3309     pic_out->prop.f_crf_avg = h->fdec->f_crf_avg;
3310
3311     while( filler > 0 )
3312     {
3313         int f, overhead;
3314         overhead = (FILLER_OVERHEAD - h->param.b_annexb);
3315         if( h->param.i_slice_max_size && filler > h->param.i_slice_max_size )
3316         {
3317             int next_size = filler - h->param.i_slice_max_size;
3318             int overflow = X264_MAX( overhead - next_size, 0 );
3319             f = h->param.i_slice_max_size - overhead - overflow;
3320         }
3321         else
3322             f = X264_MAX( 0, filler - overhead );
3323
3324         x264_nal_start( h, NAL_FILLER, NAL_PRIORITY_DISPOSABLE );
3325         x264_filler_write( h, &h->out.bs, f );
3326         if( x264_nal_end( h ) )
3327             return -1;
3328         int total_size = x264_encoder_encapsulate_nals( h, h->out.i_nal-1 );
3329         if( total_size < 0 )
3330             return -1;
3331         frame_size += total_size;
3332         filler -= total_size;
3333     }
3334
3335     /* End bitstream, set output  */
3336     *pi_nal = h->out.i_nal;
3337     *pp_nal = h->out.nal;
3338
3339     h->out.i_nal = 0;
3340
3341     x264_noise_reduction_update( h );
3342
3343     /* ---------------------- Compute/Print statistics --------------------- */
3344     x264_thread_sync_stat( h, h->thread[0] );
3345
3346     /* Slice stat */
3347     h->stat.i_frame_count[h->sh.i_type]++;
3348     h->stat.i_frame_size[h->sh.i_type] += frame_size;
3349     h->stat.f_frame_qp[h->sh.i_type] += h->fdec->f_qp_avg_aq;
3350
3351     for( int i = 0; i < X264_MBTYPE_MAX; i++ )
3352         h->stat.i_mb_count[h->sh.i_type][i] += h->stat.frame.i_mb_count[i];
3353     for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3354         h->stat.i_mb_partition[h->sh.i_type][i] += h->stat.frame.i_mb_partition[i];
3355     for( int i = 0; i < 2; i++ )
3356         h->stat.i_mb_count_8x8dct[i] += h->stat.frame.i_mb_count_8x8dct[i];
3357     for( int i = 0; i < 6; i++ )
3358         h->stat.i_mb_cbp[i] += h->stat.frame.i_mb_cbp[i];
3359     for( int i = 0; i < 4; i++ )
3360         for( int j = 0; j < 13; j++ )
3361             h->stat.i_mb_pred_mode[i][j] += h->stat.frame.i_mb_pred_mode[i][j];
3362     if( h->sh.i_type != SLICE_TYPE_I )
3363         for( int i_list = 0; i_list < 2; i_list++ )
3364             for( int i = 0; i < X264_REF_MAX*2; i++ )
3365                 h->stat.i_mb_count_ref[h->sh.i_type][i_list][i] += h->stat.frame.i_mb_count_ref[i_list][i];
3366     for( int i = 0; i < 3; i++ )
3367         h->stat.i_mb_field[i] += h->stat.frame.i_mb_field[i];
3368     if( h->sh.i_type == SLICE_TYPE_P && h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE )
3369     {
3370         h->stat.i_wpred[0] += !!h->sh.weight[0][0].weightfn;
3371         h->stat.i_wpred[1] += !!h->sh.weight[0][1].weightfn || !!h->sh.weight[0][2].weightfn;
3372     }
3373     if( h->sh.i_type == SLICE_TYPE_B )
3374     {
3375         h->stat.i_direct_frames[ h->sh.b_direct_spatial_mv_pred ] ++;
3376         if( h->mb.b_direct_auto_write )
3377         {
3378             //FIXME somewhat arbitrary time constants
3379             if( h->stat.i_direct_score[0] + h->stat.i_direct_score[1] > h->mb.i_mb_count )
3380                 for( int i = 0; i < 2; i++ )
3381                     h->stat.i_direct_score[i] = h->stat.i_direct_score[i] * 9/10;
3382             for( int i = 0; i < 2; i++ )
3383                 h->stat.i_direct_score[i] += h->stat.frame.i_direct_score[i];
3384         }
3385     }
3386     else
3387         h->stat.i_consecutive_bframes[h->fenc->i_bframes]++;
3388
3389     psz_message[0] = '\0';
3390     double dur = h->fenc->f_duration;
3391     h->stat.f_frame_duration[h->sh.i_type] += dur;
3392     if( h->param.analyse.b_psnr )
3393     {
3394         int64_t ssd[3] =
3395         {
3396             h->stat.frame.i_ssd[0],
3397             h->stat.frame.i_ssd[1],
3398             h->stat.frame.i_ssd[2],
3399         };
3400         int luma_size = h->param.i_width * h->param.i_height;
3401         int chroma_size = CHROMA_SIZE( luma_size );
3402         pic_out->prop.f_psnr[0] = x264_psnr( ssd[0], luma_size );
3403         pic_out->prop.f_psnr[1] = x264_psnr( ssd[1], chroma_size );
3404         pic_out->prop.f_psnr[2] = x264_psnr( ssd[2], chroma_size );
3405         pic_out->prop.f_psnr_avg = x264_psnr( ssd[0] + ssd[1] + ssd[2], luma_size + chroma_size*2 );
3406
3407         h->stat.f_ssd_global[h->sh.i_type]   += dur * (ssd[0] + ssd[1] + ssd[2]);
3408         h->stat.f_psnr_average[h->sh.i_type] += dur * pic_out->prop.f_psnr_avg;
3409         h->stat.f_psnr_mean_y[h->sh.i_type]  += dur * pic_out->prop.f_psnr[0];
3410         h->stat.f_psnr_mean_u[h->sh.i_type]  += dur * pic_out->prop.f_psnr[1];
3411         h->stat.f_psnr_mean_v[h->sh.i_type]  += dur * pic_out->prop.f_psnr[2];
3412
3413         snprintf( psz_message, 80, " PSNR Y:%5.2f U:%5.2f V:%5.2f", pic_out->prop.f_psnr[0],
3414                                                                     pic_out->prop.f_psnr[1],
3415                                                                     pic_out->prop.f_psnr[2] );
3416     }
3417
3418     if( h->param.analyse.b_ssim )
3419     {
3420         pic_out->prop.f_ssim = h->stat.frame.f_ssim / h->stat.frame.i_ssim_cnt;
3421         h->stat.f_ssim_mean_y[h->sh.i_type] += pic_out->prop.f_ssim * dur;
3422         snprintf( psz_message + strlen(psz_message), 80 - strlen(psz_message),
3423                   " SSIM Y:%.5f", pic_out->prop.f_ssim );
3424     }
3425     psz_message[79] = '\0';
3426
3427     x264_log( h, X264_LOG_DEBUG,
3428                   "frame=%4d QP=%.2f NAL=%d Slice:%c Poc:%-3d I:%-4d P:%-4d SKIP:%-4d size=%d bytes%s\n",
3429               h->i_frame,
3430               h->fdec->f_qp_avg_aq,
3431               h->i_nal_ref_idc,
3432               h->sh.i_type == SLICE_TYPE_I ? 'I' : (h->sh.i_type == SLICE_TYPE_P ? 'P' : 'B' ),
3433               h->fdec->i_poc,
3434               h->stat.frame.i_mb_count_i,
3435               h->stat.frame.i_mb_count_p,
3436               h->stat.frame.i_mb_count_skip,
3437               frame_size,
3438               psz_message );
3439
3440     // keep stats all in one place
3441     x264_thread_sync_stat( h->thread[0], h );
3442     // for the use of the next frame
3443     x264_thread_sync_stat( thread_current, h );
3444
3445 #ifdef DEBUG_MB_TYPE
3446 {
3447     static const char mb_chars[] = { 'i', 'i', 'I', 'C', 'P', '8', 'S',
3448         'D', '<', 'X', 'B', 'X', '>', 'B', 'B', 'B', 'B', '8', 'S' };
3449     for( int mb_xy = 0; mb_xy < h->mb.i_mb_width * h->mb.i_mb_height; mb_xy++ )
3450     {
3451         if( h->mb.type[mb_xy] < X264_MBTYPE_MAX && h->mb.type[mb_xy] >= 0 )
3452             fprintf( stderr, "%c ", mb_chars[ h->mb.type[mb_xy] ] );
3453         else
3454             fprintf( stderr, "? " );
3455
3456         if( (mb_xy+1) % h->mb.i_mb_width == 0 )
3457             fprintf( stderr, "\n" );
3458     }
3459 }
3460 #endif
3461
3462     /* Remove duplicates, must be done near the end as breaks h->fref0 array
3463      * by freeing some of its pointers. */
3464     for( int i = 0; i < h->i_ref[0]; i++ )
3465         if( h->fref[0][i] && h->fref[0][i]->b_duplicate )
3466         {
3467             x264_frame_push_blank_unused( h, h->fref[0][i] );
3468             h->fref[0][i] = 0;
3469         }
3470
3471     if( h->param.psz_dump_yuv )
3472         x264_frame_dump( h );
3473     x264_emms();
3474
3475     return frame_size;
3476 }
3477
3478 static void x264_print_intra( int64_t *i_mb_count, double i_count, int b_print_pcm, char *intra )
3479 {
3480     intra += sprintf( intra, "I16..4%s: %4.1f%% %4.1f%% %4.1f%%",
3481         b_print_pcm ? "..PCM" : "",
3482         i_mb_count[I_16x16]/ i_count,
3483         i_mb_count[I_8x8]  / i_count,
3484         i_mb_count[I_4x4]  / i_count );
3485     if( b_print_pcm )
3486         sprintf( intra, " %4.1f%%", i_mb_count[I_PCM]  / i_count );
3487 }
3488
3489 /****************************************************************************
3490  * x264_encoder_close:
3491  ****************************************************************************/
3492 void    x264_encoder_close  ( x264_t *h )
3493 {
3494     int64_t i_yuv_size = FRAME_SIZE( h->param.i_width * h->param.i_height );
3495     int64_t i_mb_count_size[2][7] = {{0}};
3496     char buf[200];
3497     int b_print_pcm = h->stat.i_mb_count[SLICE_TYPE_I][I_PCM]
3498                    || h->stat.i_mb_count[SLICE_TYPE_P][I_PCM]
3499                    || h->stat.i_mb_count[SLICE_TYPE_B][I_PCM];
3500
3501     x264_lookahead_delete( h );
3502
3503     if( h->param.b_sliced_threads )
3504         x264_threadpool_wait_all( h );
3505     if( h->param.i_threads > 1 )
3506         x264_threadpool_delete( h->threadpool );
3507     if( h->param.i_lookahead_threads > 1 )
3508         x264_threadpool_delete( h->lookaheadpool );
3509     if( h->i_thread_frames > 1 )
3510     {
3511         for( int i = 0; i < h->i_thread_frames; i++ )
3512             if( h->thread[i]->b_thread_active )
3513             {
3514                 assert( h->thread[i]->fenc->i_reference_count == 1 );
3515                 x264_frame_delete( h->thread[i]->fenc );
3516             }
3517
3518         x264_t *thread_prev = h->thread[h->i_thread_phase];
3519         x264_thread_sync_ratecontrol( h, thread_prev, h );
3520         x264_thread_sync_ratecontrol( thread_prev, thread_prev, h );
3521         h->i_frame = thread_prev->i_frame + 1 - h->i_thread_frames;
3522     }
3523     h->i_frame++;
3524
3525     /* Slices used and PSNR */
3526     for( int i = 0; i < 3; i++ )
3527     {
3528         static const uint8_t slice_order[] = { SLICE_TYPE_I, SLICE_TYPE_P, SLICE_TYPE_B };
3529         int i_slice = slice_order[i];
3530
3531         if( h->stat.i_frame_count[i_slice] > 0 )
3532         {
3533             int i_count = h->stat.i_frame_count[i_slice];
3534             double dur =  h->stat.f_frame_duration[i_slice];
3535             if( h->param.analyse.b_psnr )
3536             {
3537                 x264_log( h, X264_LOG_INFO,
3538                           "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",
3539                           slice_type_to_char[i_slice],
3540                           i_count,
3541                           h->stat.f_frame_qp[i_slice] / i_count,
3542                           (double)h->stat.i_frame_size[i_slice] / i_count,
3543                           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,
3544                           h->stat.f_psnr_average[i_slice] / dur,
3545                           x264_psnr( h->stat.f_ssd_global[i_slice], dur * i_yuv_size ) );
3546             }
3547             else
3548             {
3549                 x264_log( h, X264_LOG_INFO,
3550                           "frame %c:%-5d Avg QP:%5.2f  size:%6.0f\n",
3551                           slice_type_to_char[i_slice],
3552                           i_count,
3553                           h->stat.f_frame_qp[i_slice] / i_count,
3554                           (double)h->stat.i_frame_size[i_slice] / i_count );
3555             }
3556         }
3557     }
3558     if( h->param.i_bframe && h->stat.i_frame_count[SLICE_TYPE_B] )
3559     {
3560         char *p = buf;
3561         int den = 0;
3562         // weight by number of frames (including the I/P-frames) that are in a sequence of N B-frames
3563         for( int i = 0; i <= h->param.i_bframe; i++ )
3564             den += (i+1) * h->stat.i_consecutive_bframes[i];
3565         for( int i = 0; i <= h->param.i_bframe; i++ )
3566             p += sprintf( p, " %4.1f%%", 100. * (i+1) * h->stat.i_consecutive_bframes[i] / den );
3567         x264_log( h, X264_LOG_INFO, "consecutive B-frames:%s\n", buf );
3568     }
3569
3570     for( int i_type = 0; i_type < 2; i_type++ )
3571         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3572         {
3573             if( i == D_DIRECT_8x8 ) continue; /* direct is counted as its own type */
3574             i_mb_count_size[i_type][x264_mb_partition_pixel_table[i]] += h->stat.i_mb_partition[i_type][i];
3575         }
3576
3577     /* MB types used */
3578     if( h->stat.i_frame_count[SLICE_TYPE_I] > 0 )
3579     {
3580         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_I];
3581         double i_count = h->stat.i_frame_count[SLICE_TYPE_I] * h->mb.i_mb_count / 100.0;
3582         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3583         x264_log( h, X264_LOG_INFO, "mb I  %s\n", buf );
3584     }
3585     if( h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3586     {
3587         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_P];
3588         double i_count = h->stat.i_frame_count[SLICE_TYPE_P] * h->mb.i_mb_count / 100.0;
3589         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_P];
3590         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3591         x264_log( h, X264_LOG_INFO,
3592                   "mb P  %s  P16..4: %4.1f%% %4.1f%% %4.1f%% %4.1f%% %4.1f%%    skip:%4.1f%%\n",
3593                   buf,
3594                   i_mb_size[PIXEL_16x16] / (i_count*4),
3595                   (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3596                   i_mb_size[PIXEL_8x8] / (i_count*4),
3597                   (i_mb_size[PIXEL_8x4] + i_mb_size[PIXEL_4x8]) / (i_count*4),
3598                   i_mb_size[PIXEL_4x4] / (i_count*4),
3599                   i_mb_count[P_SKIP] / i_count );
3600     }
3601     if( h->stat.i_frame_count[SLICE_TYPE_B] > 0 )
3602     {
3603         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_B];
3604         double i_count = h->stat.i_frame_count[SLICE_TYPE_B] * h->mb.i_mb_count / 100.0;
3605         double i_mb_list_count;
3606         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_B];
3607         int64_t list_count[3] = {0}; /* 0 == L0, 1 == L1, 2 == BI */
3608         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3609         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3610             for( int j = 0; j < 2; j++ )
3611             {
3612                 int l0 = x264_mb_type_list_table[i][0][j];
3613                 int l1 = x264_mb_type_list_table[i][1][j];
3614                 if( l0 || l1 )
3615                     list_count[l1+l0*l1] += h->stat.i_mb_count[SLICE_TYPE_B][i] * 2;
3616             }
3617         list_count[0] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L0_8x8];
3618         list_count[1] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L1_8x8];
3619         list_count[2] += h->stat.i_mb_partition[SLICE_TYPE_B][D_BI_8x8];
3620         i_mb_count[B_DIRECT] += (h->stat.i_mb_partition[SLICE_TYPE_B][D_DIRECT_8x8]+2)/4;
3621         i_mb_list_count = (list_count[0] + list_count[1] + list_count[2]) / 100.0;
3622         sprintf( buf + strlen(buf), "  B16..8: %4.1f%% %4.1f%% %4.1f%%  direct:%4.1f%%  skip:%4.1f%%",
3623                  i_mb_size[PIXEL_16x16] / (i_count*4),
3624                  (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3625                  i_mb_size[PIXEL_8x8] / (i_count*4),
3626                  i_mb_count[B_DIRECT] / i_count,
3627                  i_mb_count[B_SKIP]   / i_count );
3628         if( i_mb_list_count != 0 )
3629             sprintf( buf + strlen(buf), "  L0:%4.1f%% L1:%4.1f%% BI:%4.1f%%",
3630                      list_count[0] / i_mb_list_count,
3631                      list_count[1] / i_mb_list_count,
3632                      list_count[2] / i_mb_list_count );
3633         x264_log( h, X264_LOG_INFO, "mb B  %s\n", buf );
3634     }
3635
3636     x264_ratecontrol_summary( h );
3637
3638     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 )
3639     {
3640 #define SUM3(p) (p[SLICE_TYPE_I] + p[SLICE_TYPE_P] + p[SLICE_TYPE_B])
3641 #define SUM3b(p,o) (p[SLICE_TYPE_I][o] + p[SLICE_TYPE_P][o] + p[SLICE_TYPE_B][o])
3642         int64_t i_i8x8 = SUM3b( h->stat.i_mb_count, I_8x8 );
3643         int64_t i_intra = i_i8x8 + SUM3b( h->stat.i_mb_count, I_4x4 )
3644                                  + SUM3b( h->stat.i_mb_count, I_16x16 );
3645         int64_t i_all_intra = i_intra + SUM3b( h->stat.i_mb_count, I_PCM);
3646         int64_t i_skip = SUM3b( h->stat.i_mb_count, P_SKIP )
3647                        + SUM3b( h->stat.i_mb_count, B_SKIP );
3648         const int i_count = h->stat.i_frame_count[SLICE_TYPE_I] +
3649                             h->stat.i_frame_count[SLICE_TYPE_P] +
3650                             h->stat.i_frame_count[SLICE_TYPE_B];
3651         int64_t i_mb_count = (int64_t)i_count * h->mb.i_mb_count;
3652         int64_t i_inter = i_mb_count - i_skip - i_intra;
3653         const double duration = h->stat.f_frame_duration[SLICE_TYPE_I] +
3654                                 h->stat.f_frame_duration[SLICE_TYPE_P] +
3655                                 h->stat.f_frame_duration[SLICE_TYPE_B];
3656         float f_bitrate = SUM3(h->stat.i_frame_size) / duration / 125;
3657
3658         if( PARAM_INTERLACED )
3659         {
3660             char *fieldstats = buf;
3661             fieldstats[0] = 0;
3662             if( i_inter )
3663                 fieldstats += sprintf( fieldstats, " inter:%.1f%%", h->stat.i_mb_field[1] * 100.0 / i_inter );
3664             if( i_skip )
3665                 fieldstats += sprintf( fieldstats, " skip:%.1f%%", h->stat.i_mb_field[2] * 100.0 / i_skip );
3666             x264_log( h, X264_LOG_INFO, "field mbs: intra: %.1f%%%s\n",
3667                       h->stat.i_mb_field[0] * 100.0 / i_intra, buf );
3668         }
3669
3670         if( h->pps->b_transform_8x8_mode )
3671         {
3672             buf[0] = 0;
3673             if( h->stat.i_mb_count_8x8dct[0] )
3674                 sprintf( buf, " inter:%.1f%%", 100. * h->stat.i_mb_count_8x8dct[1] / h->stat.i_mb_count_8x8dct[0] );
3675             x264_log( h, X264_LOG_INFO, "8x8 transform intra:%.1f%%%s\n", 100. * i_i8x8 / i_intra, buf );
3676         }
3677
3678         if( (h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO ||
3679             (h->stat.i_direct_frames[0] && h->stat.i_direct_frames[1]))
3680             && h->stat.i_frame_count[SLICE_TYPE_B] )
3681         {
3682             x264_log( h, X264_LOG_INFO, "direct mvs  spatial:%.1f%% temporal:%.1f%%\n",
3683                       h->stat.i_direct_frames[1] * 100. / h->stat.i_frame_count[SLICE_TYPE_B],
3684                       h->stat.i_direct_frames[0] * 100. / h->stat.i_frame_count[SLICE_TYPE_B] );
3685         }
3686
3687         buf[0] = 0;
3688         int csize = CHROMA444 ? 4 : 1;
3689         if( i_mb_count != i_all_intra )
3690             sprintf( buf, " inter: %.1f%% %.1f%% %.1f%%",
3691                      h->stat.i_mb_cbp[1] * 100.0 / ((i_mb_count - i_all_intra)*4),
3692                      h->stat.i_mb_cbp[3] * 100.0 / ((i_mb_count - i_all_intra)*csize),
3693                      h->stat.i_mb_cbp[5] * 100.0 / ((i_mb_count - i_all_intra)*csize) );
3694         x264_log( h, X264_LOG_INFO, "coded y,%s,%s intra: %.1f%% %.1f%% %.1f%%%s\n",
3695                   CHROMA444?"u":"uvDC", CHROMA444?"v":"uvAC",
3696                   h->stat.i_mb_cbp[0] * 100.0 / (i_all_intra*4),
3697                   h->stat.i_mb_cbp[2] * 100.0 / (i_all_intra*csize),
3698                   h->stat.i_mb_cbp[4] * 100.0 / (i_all_intra*csize), buf );
3699
3700         int64_t fixed_pred_modes[4][9] = {{0}};
3701         int64_t sum_pred_modes[4] = {0};
3702         for( int i = 0; i <= I_PRED_16x16_DC_128; i++ )
3703         {
3704             fixed_pred_modes[0][x264_mb_pred_mode16x16_fix[i]] += h->stat.i_mb_pred_mode[0][i];
3705             sum_pred_modes[0] += h->stat.i_mb_pred_mode[0][i];
3706         }
3707         if( sum_pred_modes[0] )
3708             x264_log( h, X264_LOG_INFO, "i16 v,h,dc,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3709                       fixed_pred_modes[0][0] * 100.0 / sum_pred_modes[0],
3710                       fixed_pred_modes[0][1] * 100.0 / sum_pred_modes[0],
3711                       fixed_pred_modes[0][2] * 100.0 / sum_pred_modes[0],
3712                       fixed_pred_modes[0][3] * 100.0 / sum_pred_modes[0] );
3713         for( int i = 1; i <= 2; i++ )
3714         {
3715             for( int j = 0; j <= I_PRED_8x8_DC_128; j++ )
3716             {
3717                 fixed_pred_modes[i][x264_mb_pred_mode4x4_fix(j)] += h->stat.i_mb_pred_mode[i][j];
3718                 sum_pred_modes[i] += h->stat.i_mb_pred_mode[i][j];
3719             }
3720             if( sum_pred_modes[i] )
3721                 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,
3722                           fixed_pred_modes[i][0] * 100.0 / sum_pred_modes[i],
3723                           fixed_pred_modes[i][1] * 100.0 / sum_pred_modes[i],
3724                           fixed_pred_modes[i][2] * 100.0 / sum_pred_modes[i],
3725                           fixed_pred_modes[i][3] * 100.0 / sum_pred_modes[i],
3726                           fixed_pred_modes[i][4] * 100.0 / sum_pred_modes[i],
3727                           fixed_pred_modes[i][5] * 100.0 / sum_pred_modes[i],
3728                           fixed_pred_modes[i][6] * 100.0 / sum_pred_modes[i],
3729                           fixed_pred_modes[i][7] * 100.0 / sum_pred_modes[i],
3730                           fixed_pred_modes[i][8] * 100.0 / sum_pred_modes[i] );
3731         }
3732         for( int i = 0; i <= I_PRED_CHROMA_DC_128; i++ )
3733         {
3734             fixed_pred_modes[3][x264_mb_chroma_pred_mode_fix[i]] += h->stat.i_mb_pred_mode[3][i];
3735             sum_pred_modes[3] += h->stat.i_mb_pred_mode[3][i];
3736         }
3737         if( sum_pred_modes[3] && !CHROMA444 )
3738             x264_log( h, X264_LOG_INFO, "i8c dc,h,v,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3739                       fixed_pred_modes[3][0] * 100.0 / sum_pred_modes[3],
3740                       fixed_pred_modes[3][1] * 100.0 / sum_pred_modes[3],
3741                       fixed_pred_modes[3][2] * 100.0 / sum_pred_modes[3],
3742                       fixed_pred_modes[3][3] * 100.0 / sum_pred_modes[3] );
3743
3744         if( h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE && h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3745             x264_log( h, X264_LOG_INFO, "Weighted P-Frames: Y:%.1f%% UV:%.1f%%\n",
3746                       h->stat.i_wpred[0] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P],
3747                       h->stat.i_wpred[1] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P] );
3748
3749         for( int i_list = 0; i_list < 2; i_list++ )
3750             for( int i_slice = 0; i_slice < 2; i_slice++ )
3751             {
3752                 char *p = buf;
3753                 int64_t i_den = 0;
3754                 int i_max = 0;
3755                 for( int i = 0; i < X264_REF_MAX*2; i++ )
3756                     if( h->stat.i_mb_count_ref[i_slice][i_list][i] )
3757                     {
3758                         i_den += h->stat.i_mb_count_ref[i_slice][i_list][i];
3759                         i_max = i;
3760                     }
3761                 if( i_max == 0 )
3762                     continue;
3763                 for( int i = 0; i <= i_max; i++ )
3764                     p += sprintf( p, " %4.1f%%", 100. * h->stat.i_mb_count_ref[i_slice][i_list][i] / i_den );
3765                 x264_log( h, X264_LOG_INFO, "ref %c L%d:%s\n", "PB"[i_slice], i_list, buf );
3766             }
3767
3768         if( h->param.analyse.b_ssim )
3769         {
3770             float ssim = SUM3( h->stat.f_ssim_mean_y ) / duration;
3771             x264_log( h, X264_LOG_INFO, "SSIM Mean Y:%.7f (%6.3fdb)\n", ssim, x264_ssim( ssim ) );
3772         }
3773         if( h->param.analyse.b_psnr )
3774         {
3775             x264_log( h, X264_LOG_INFO,
3776                       "PSNR Mean Y:%6.3f U:%6.3f V:%6.3f Avg:%6.3f Global:%6.3f kb/s:%.2f\n",
3777                       SUM3( h->stat.f_psnr_mean_y ) / duration,
3778                       SUM3( h->stat.f_psnr_mean_u ) / duration,
3779                       SUM3( h->stat.f_psnr_mean_v ) / duration,
3780                       SUM3( h->stat.f_psnr_average ) / duration,
3781                       x264_psnr( SUM3( h->stat.f_ssd_global ), duration * i_yuv_size ),
3782                       f_bitrate );
3783         }
3784         else
3785             x264_log( h, X264_LOG_INFO, "kb/s:%.2f\n", f_bitrate );
3786     }
3787
3788     /* rc */
3789     x264_ratecontrol_delete( h );
3790
3791     /* param */
3792     if( h->param.rc.psz_stat_out )
3793         free( h->param.rc.psz_stat_out );
3794     if( h->param.rc.psz_stat_in )
3795         free( h->param.rc.psz_stat_in );
3796
3797     x264_cqm_delete( h );
3798     x264_free( h->nal_buffer );
3799     x264_analyse_free_costs( h );
3800
3801     if( h->i_thread_frames > 1 )
3802         h = h->thread[h->i_thread_phase];
3803
3804     /* frames */
3805     x264_frame_delete_list( h->frames.unused[0] );
3806     x264_frame_delete_list( h->frames.unused[1] );
3807     x264_frame_delete_list( h->frames.current );
3808     x264_frame_delete_list( h->frames.blank_unused );
3809
3810     h = h->thread[0];
3811
3812     for( int i = 0; i < h->i_thread_frames; i++ )
3813         if( h->thread[i]->b_thread_active )
3814             for( int j = 0; j < h->thread[i]->i_ref[0]; j++ )
3815                 if( h->thread[i]->fref[0][j] && h->thread[i]->fref[0][j]->b_duplicate )
3816                     x264_frame_delete( h->thread[i]->fref[0][j] );
3817
3818     if( h->param.i_lookahead_threads > 1 )
3819         for( int i = 0; i < h->param.i_lookahead_threads; i++ )
3820             x264_free( h->lookahead_thread[i] );
3821
3822     for( int i = h->param.i_threads - 1; i >= 0; i-- )
3823     {
3824         x264_frame_t **frame;
3825
3826         if( !h->param.b_sliced_threads || i == 0 )
3827         {
3828             for( frame = h->thread[i]->frames.reference; *frame; frame++ )
3829             {
3830                 assert( (*frame)->i_reference_count > 0 );
3831                 (*frame)->i_reference_count--;
3832                 if( (*frame)->i_reference_count == 0 )
3833                     x264_frame_delete( *frame );
3834             }
3835             frame = &h->thread[i]->fdec;
3836             if( *frame )
3837             {
3838                 assert( (*frame)->i_reference_count > 0 );
3839                 (*frame)->i_reference_count--;
3840                 if( (*frame)->i_reference_count == 0 )
3841                     x264_frame_delete( *frame );
3842             }
3843             x264_macroblock_cache_free( h->thread[i] );
3844         }
3845         x264_macroblock_thread_free( h->thread[i], 0 );
3846         x264_free( h->thread[i]->out.p_bitstream );
3847         x264_free( h->thread[i]->out.nal );
3848         x264_pthread_mutex_destroy( &h->thread[i]->mutex );
3849         x264_pthread_cond_destroy( &h->thread[i]->cv );
3850         x264_free( h->thread[i] );
3851     }
3852 }
3853
3854 int x264_encoder_delayed_frames( x264_t *h )
3855 {
3856     int delayed_frames = 0;
3857     if( h->i_thread_frames > 1 )
3858     {
3859         for( int i = 0; i < h->i_thread_frames; i++ )
3860             delayed_frames += h->thread[i]->b_thread_active;
3861         h = h->thread[h->i_thread_phase];
3862     }
3863     for( int i = 0; h->frames.current[i]; i++ )
3864         delayed_frames++;
3865     x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
3866     x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
3867     x264_pthread_mutex_lock( &h->lookahead->next.mutex );
3868     delayed_frames += h->lookahead->ifbuf.i_size + h->lookahead->next.i_size + h->lookahead->ofbuf.i_size;
3869     x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
3870     x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
3871     x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
3872     return delayed_frames;
3873 }
3874
3875 int x264_encoder_maximum_delayed_frames( x264_t *h )
3876 {
3877     return h->frames.i_delay;
3878 }