Abstract bitstream backup/restore functions
[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 void x264_frame_dump( x264_t *h )
72 {
73     FILE *f = fopen( h->param.psz_dump_yuv, "r+b" );
74     if( !f )
75         return;
76
77     /* Write the frame in display order */
78     int frame_size = FRAME_SIZE( h->param.i_height * h->param.i_width * sizeof(pixel) );
79     fseek( f, (uint64_t)h->fdec->i_frame * frame_size, SEEK_SET );
80     for( int p = 0; p < (CHROMA444 ? 3 : 1); p++ )
81         for( int y = 0; y < h->param.i_height; y++ )
82             fwrite( &h->fdec->plane[p][y*h->fdec->i_stride[p]], sizeof(pixel), h->param.i_width, f );
83     if( !CHROMA444 )
84     {
85         int cw = h->param.i_width>>1;
86         int ch = h->param.i_height>>CHROMA_V_SHIFT;
87         pixel *planeu = x264_malloc( (cw*ch*2+32)*sizeof(pixel) );
88         pixel *planev = planeu + cw*ch + 16;
89         h->mc.plane_copy_deinterleave( planeu, cw, planev, cw, h->fdec->plane[1], h->fdec->i_stride[1], cw, ch );
90         fwrite( planeu, 1, cw*ch*sizeof(pixel), f );
91         fwrite( planev, 1, cw*ch*sizeof(pixel), f );
92         x264_free( planeu );
93     }
94     fclose( f );
95 }
96
97 /* Fill "default" values */
98 static void x264_slice_header_init( x264_t *h, x264_slice_header_t *sh,
99                                     x264_sps_t *sps, x264_pps_t *pps,
100                                     int i_idr_pic_id, int i_frame, int i_qp )
101 {
102     x264_param_t *param = &h->param;
103
104     /* First we fill all fields */
105     sh->sps = sps;
106     sh->pps = pps;
107
108     sh->i_first_mb  = 0;
109     sh->i_last_mb   = h->mb.i_mb_count - 1;
110     sh->i_pps_id    = pps->i_id;
111
112     sh->i_frame_num = i_frame;
113
114     sh->b_mbaff = PARAM_INTERLACED;
115     sh->b_field_pic = 0;    /* no field support for now */
116     sh->b_bottom_field = 0; /* not yet used */
117
118     sh->i_idr_pic_id = i_idr_pic_id;
119
120     /* poc stuff, fixed later */
121     sh->i_poc = 0;
122     sh->i_delta_poc_bottom = 0;
123     sh->i_delta_poc[0] = 0;
124     sh->i_delta_poc[1] = 0;
125
126     sh->i_redundant_pic_cnt = 0;
127
128     h->mb.b_direct_auto_write = h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO
129                                 && h->param.i_bframe
130                                 && ( h->param.rc.b_stat_write || !h->param.rc.b_stat_read );
131
132     if( !h->mb.b_direct_auto_read && sh->i_type == SLICE_TYPE_B )
133     {
134         if( h->fref[1][0]->i_poc_l0ref0 == h->fref[0][0]->i_poc )
135         {
136             if( h->mb.b_direct_auto_write )
137                 sh->b_direct_spatial_mv_pred = ( h->stat.i_direct_score[1] > h->stat.i_direct_score[0] );
138             else
139                 sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
140         }
141         else
142         {
143             h->mb.b_direct_auto_write = 0;
144             sh->b_direct_spatial_mv_pred = 1;
145         }
146     }
147     /* else b_direct_spatial_mv_pred was read from the 2pass statsfile */
148
149     sh->b_num_ref_idx_override = 0;
150     sh->i_num_ref_idx_l0_active = 1;
151     sh->i_num_ref_idx_l1_active = 1;
152
153     sh->b_ref_pic_list_reordering[0] = h->b_ref_reorder[0];
154     sh->b_ref_pic_list_reordering[1] = h->b_ref_reorder[1];
155
156     /* If the ref list isn't in the default order, construct reordering header */
157     for( int list = 0; list < 2; list++ )
158     {
159         if( sh->b_ref_pic_list_reordering[list] )
160         {
161             int pred_frame_num = i_frame;
162             for( int i = 0; i < h->i_ref[list]; i++ )
163             {
164                 int diff = h->fref[list][i]->i_frame_num - pred_frame_num;
165                 sh->ref_pic_list_order[list][i].idc = ( diff > 0 );
166                 sh->ref_pic_list_order[list][i].arg = (abs(diff) - 1) & ((1 << sps->i_log2_max_frame_num) - 1);
167                 pred_frame_num = h->fref[list][i]->i_frame_num;
168             }
169         }
170     }
171
172     sh->i_cabac_init_idc = param->i_cabac_init_idc;
173
174     sh->i_qp = SPEC_QP(i_qp);
175     sh->i_qp_delta = sh->i_qp - pps->i_pic_init_qp;
176     sh->b_sp_for_swidth = 0;
177     sh->i_qs_delta = 0;
178
179     int deblock_thresh = i_qp + 2 * X264_MIN(param->i_deblocking_filter_alphac0, param->i_deblocking_filter_beta);
180     /* If effective qp <= 15, deblocking would have no effect anyway */
181     if( param->b_deblocking_filter && (h->mb.b_variable_qp || 15 < deblock_thresh ) )
182         sh->i_disable_deblocking_filter_idc = param->b_sliced_threads ? 2 : 0;
183     else
184         sh->i_disable_deblocking_filter_idc = 1;
185     sh->i_alpha_c0_offset = param->i_deblocking_filter_alphac0 << 1;
186     sh->i_beta_offset = param->i_deblocking_filter_beta << 1;
187 }
188
189 static void x264_slice_header_write( bs_t *s, x264_slice_header_t *sh, int i_nal_ref_idc )
190 {
191     if( sh->b_mbaff )
192     {
193         int first_x = sh->i_first_mb % sh->sps->i_mb_width;
194         int first_y = sh->i_first_mb / sh->sps->i_mb_width;
195         assert( (first_y&1) == 0 );
196         bs_write_ue( s, (2*first_x + sh->sps->i_mb_width*(first_y&~1) + (first_y&1)) >> 1 );
197     }
198     else
199         bs_write_ue( s, sh->i_first_mb );
200
201     bs_write_ue( s, sh->i_type + 5 );   /* same type things */
202     bs_write_ue( s, sh->i_pps_id );
203     bs_write( s, sh->sps->i_log2_max_frame_num, sh->i_frame_num & ((1<<sh->sps->i_log2_max_frame_num)-1) );
204
205     if( !sh->sps->b_frame_mbs_only )
206     {
207         bs_write1( s, sh->b_field_pic );
208         if( sh->b_field_pic )
209             bs_write1( s, sh->b_bottom_field );
210     }
211
212     if( sh->i_idr_pic_id >= 0 ) /* NAL IDR */
213         bs_write_ue( s, sh->i_idr_pic_id );
214
215     if( sh->sps->i_poc_type == 0 )
216     {
217         bs_write( s, sh->sps->i_log2_max_poc_lsb, sh->i_poc & ((1<<sh->sps->i_log2_max_poc_lsb)-1) );
218         if( sh->pps->b_pic_order && !sh->b_field_pic )
219             bs_write_se( s, sh->i_delta_poc_bottom );
220     }
221
222     if( sh->pps->b_redundant_pic_cnt )
223         bs_write_ue( s, sh->i_redundant_pic_cnt );
224
225     if( sh->i_type == SLICE_TYPE_B )
226         bs_write1( s, sh->b_direct_spatial_mv_pred );
227
228     if( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_B )
229     {
230         bs_write1( s, sh->b_num_ref_idx_override );
231         if( sh->b_num_ref_idx_override )
232         {
233             bs_write_ue( s, sh->i_num_ref_idx_l0_active - 1 );
234             if( sh->i_type == SLICE_TYPE_B )
235                 bs_write_ue( s, sh->i_num_ref_idx_l1_active - 1 );
236         }
237     }
238
239     /* ref pic list reordering */
240     if( sh->i_type != SLICE_TYPE_I )
241     {
242         bs_write1( s, sh->b_ref_pic_list_reordering[0] );
243         if( sh->b_ref_pic_list_reordering[0] )
244         {
245             for( int i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
246             {
247                 bs_write_ue( s, sh->ref_pic_list_order[0][i].idc );
248                 bs_write_ue( s, sh->ref_pic_list_order[0][i].arg );
249             }
250             bs_write_ue( s, 3 );
251         }
252     }
253     if( sh->i_type == SLICE_TYPE_B )
254     {
255         bs_write1( s, sh->b_ref_pic_list_reordering[1] );
256         if( sh->b_ref_pic_list_reordering[1] )
257         {
258             for( int i = 0; i < sh->i_num_ref_idx_l1_active; i++ )
259             {
260                 bs_write_ue( s, sh->ref_pic_list_order[1][i].idc );
261                 bs_write_ue( s, sh->ref_pic_list_order[1][i].arg );
262             }
263             bs_write_ue( s, 3 );
264         }
265     }
266
267     if( sh->pps->b_weighted_pred && sh->i_type == SLICE_TYPE_P )
268     {
269         /* pred_weight_table() */
270         bs_write_ue( s, sh->weight[0][0].i_denom );
271         bs_write_ue( s, sh->weight[0][1].i_denom );
272         for( int i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
273         {
274             int luma_weight_l0_flag = !!sh->weight[i][0].weightfn;
275             int chroma_weight_l0_flag = !!sh->weight[i][1].weightfn || !!sh->weight[i][2].weightfn;
276             bs_write1( s, luma_weight_l0_flag );
277             if( luma_weight_l0_flag )
278             {
279                 bs_write_se( s, sh->weight[i][0].i_scale );
280                 bs_write_se( s, sh->weight[i][0].i_offset );
281             }
282             bs_write1( s, chroma_weight_l0_flag );
283             if( chroma_weight_l0_flag )
284             {
285                 for( int j = 1; j < 3; j++ )
286                 {
287                     bs_write_se( s, sh->weight[i][j].i_scale );
288                     bs_write_se( s, sh->weight[i][j].i_offset );
289                 }
290             }
291         }
292     }
293     else if( sh->pps->b_weighted_bipred == 1 && sh->i_type == SLICE_TYPE_B )
294     {
295       /* TODO */
296     }
297
298     if( i_nal_ref_idc != 0 )
299     {
300         if( sh->i_idr_pic_id >= 0 )
301         {
302             bs_write1( s, 0 );  /* no output of prior pics flag */
303             bs_write1( s, 0 );  /* long term reference flag */
304         }
305         else
306         {
307             bs_write1( s, sh->i_mmco_command_count > 0 ); /* adaptive_ref_pic_marking_mode_flag */
308             if( sh->i_mmco_command_count > 0 )
309             {
310                 for( int i = 0; i < sh->i_mmco_command_count; i++ )
311                 {
312                     bs_write_ue( s, 1 ); /* mark short term ref as unused */
313                     bs_write_ue( s, sh->mmco[i].i_difference_of_pic_nums - 1 );
314                 }
315                 bs_write_ue( s, 0 ); /* end command list */
316             }
317         }
318     }
319
320     if( sh->pps->b_cabac && sh->i_type != SLICE_TYPE_I )
321         bs_write_ue( s, sh->i_cabac_init_idc );
322
323     bs_write_se( s, sh->i_qp_delta );      /* slice qp delta */
324
325     if( sh->pps->b_deblocking_filter_control )
326     {
327         bs_write_ue( s, sh->i_disable_deblocking_filter_idc );
328         if( sh->i_disable_deblocking_filter_idc != 1 )
329         {
330             bs_write_se( s, sh->i_alpha_c0_offset >> 1 );
331             bs_write_se( s, sh->i_beta_offset >> 1 );
332         }
333     }
334 }
335
336 /* If we are within a reasonable distance of the end of the memory allocated for the bitstream, */
337 /* reallocate, adding an arbitrary amount of space (100 kilobytes). */
338 static int x264_bitstream_check_buffer( x264_t *h )
339 {
340     uint8_t *bs_bak = h->out.p_bitstream;
341     int max_mb_size = 2500 << SLICE_MBAFF;
342     if( (h->param.b_cabac && (h->cabac.p_end - h->cabac.p < max_mb_size)) ||
343         (h->out.bs.p_end - h->out.bs.p < max_mb_size) )
344     {
345         h->out.i_bitstream += 100000;
346         CHECKED_MALLOC( h->out.p_bitstream, h->out.i_bitstream );
347         h->mc.memcpy_aligned( h->out.p_bitstream, bs_bak, (h->out.i_bitstream - 100000) & ~15 );
348         intptr_t delta = h->out.p_bitstream - bs_bak;
349
350         h->out.bs.p_start += delta;
351         h->out.bs.p += delta;
352         h->out.bs.p_end = h->out.p_bitstream + h->out.i_bitstream;
353
354         h->cabac.p_start += delta;
355         h->cabac.p += delta;
356         h->cabac.p_end = h->out.p_bitstream + h->out.i_bitstream;
357
358         for( int i = 0; i <= h->out.i_nal; i++ )
359             h->out.nal[i].p_payload += delta;
360         x264_free( bs_bak );
361     }
362     return 0;
363 fail:
364     x264_free( bs_bak );
365     return -1;
366 }
367
368 #if HAVE_THREAD
369 static void x264_encoder_thread_init( x264_t *h )
370 {
371     if( h->param.i_sync_lookahead )
372         x264_lower_thread_priority( 10 );
373
374 #if HAVE_MMX
375     /* Misalign mask has to be set separately for each thread. */
376     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
377         x264_cpu_mask_misalign_sse();
378 #endif
379 }
380 #endif
381
382 /****************************************************************************
383  *
384  ****************************************************************************
385  ****************************** External API*********************************
386  ****************************************************************************
387  *
388  ****************************************************************************/
389
390 static int x264_validate_parameters( x264_t *h, int b_open )
391 {
392 #if HAVE_MMX
393 #ifdef __SSE__
394     if( b_open && !(x264_cpu_detect() & X264_CPU_SSE) )
395     {
396         x264_log( h, X264_LOG_ERROR, "your cpu does not support SSE1, but x264 was compiled with asm support\n");
397 #else
398     if( b_open && !(x264_cpu_detect() & X264_CPU_MMX2) )
399     {
400         x264_log( h, X264_LOG_ERROR, "your cpu does not support MMXEXT, but x264 was compiled with asm support\n");
401 #endif
402         x264_log( h, X264_LOG_ERROR, "to run x264, recompile without asm support (configure --disable-asm)\n");
403         return -1;
404     }
405 #endif
406
407 #if HAVE_INTERLACED
408     h->param.b_interlaced = !!PARAM_INTERLACED;
409 #else
410     if( h->param.b_interlaced )
411     {
412         x264_log( h, X264_LOG_ERROR, "not compiled with interlaced support\n" );
413         return -1;
414     }
415 #endif
416
417     if( h->param.i_width <= 0 || h->param.i_height <= 0 )
418     {
419         x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
420                   h->param.i_width, h->param.i_height );
421         return -1;
422     }
423
424     int i_csp = h->param.i_csp & X264_CSP_MASK;
425 #if X264_CHROMA_FORMAT
426     if( CHROMA_FORMAT != CHROMA_420 && i_csp >= X264_CSP_I420 && i_csp <= X264_CSP_NV12 )
427     {
428         x264_log( h, X264_LOG_ERROR, "not compiled with 4:2:0 support\n" );
429         return -1;
430     }
431     else if( CHROMA_FORMAT != CHROMA_422 && i_csp >= X264_CSP_I422 && i_csp <= X264_CSP_NV16 )
432     {
433         x264_log( h, X264_LOG_ERROR, "not compiled with 4:2:2 support\n" );
434         return -1;
435     }
436     else if( CHROMA_FORMAT != CHROMA_444 && i_csp >= X264_CSP_I444 && i_csp <= X264_CSP_RGB )
437     {
438         x264_log( h, X264_LOG_ERROR, "not compiled with 4:4:4 support\n" );
439         return -1;
440     }
441 #endif
442     if( i_csp <= X264_CSP_NONE || i_csp >= X264_CSP_MAX )
443     {
444         x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420/YV12/NV12/I422/YV16/NV16/I444/YV24/BGR/BGRA/RGB supported)\n" );
445         return -1;
446     }
447
448     if( i_csp < X264_CSP_I444 && h->param.i_width % 2 )
449     {
450         x264_log( h, X264_LOG_ERROR, "width not divisible by 2 (%dx%d)\n",
451                   h->param.i_width, h->param.i_height );
452         return -1;
453     }
454
455     if( i_csp < X264_CSP_I422 && PARAM_INTERLACED && h->param.i_height % 4 )
456     {
457         x264_log( h, X264_LOG_ERROR, "height not divisible by 4 (%dx%d)\n",
458                   h->param.i_width, h->param.i_height );
459         return -1;
460     }
461
462     if( (i_csp < X264_CSP_I422 || PARAM_INTERLACED) && h->param.i_height % 2 )
463     {
464         x264_log( h, X264_LOG_ERROR, "height not divisible by 2 (%dx%d)\n",
465                   h->param.i_width, h->param.i_height );
466         return -1;
467     }
468
469     if( (h->param.crop_rect.i_left + h->param.crop_rect.i_right ) >= h->param.i_width ||
470         (h->param.crop_rect.i_top  + h->param.crop_rect.i_bottom) >= h->param.i_height )
471     {
472         x264_log( h, X264_LOG_ERROR, "invalid crop-rect %u,%u,%u,%u\n", h->param.crop_rect.i_left,
473                   h->param.crop_rect.i_top, h->param.crop_rect.i_right,  h->param.crop_rect.i_bottom );
474         return -1;
475     }
476
477     if( h->param.i_threads == X264_THREADS_AUTO )
478         h->param.i_threads = x264_cpu_num_processors() * (h->param.b_sliced_threads?2:3)/2;
479     if( h->param.i_threads > 1 )
480     {
481 #if !HAVE_THREAD
482         x264_log( h, X264_LOG_WARNING, "not compiled with thread support!\n");
483         h->param.i_threads = 1;
484 #endif
485         /* Avoid absurdly small thread slices as they can reduce performance
486          * and VBV compliance.  Capped at an arbitrary 4 rows per thread. */
487         if( h->param.b_sliced_threads )
488         {
489             int max_threads = (h->param.i_height+15)/16 / 4;
490             h->param.i_threads = X264_MIN( h->param.i_threads, max_threads );
491         }
492     }
493     h->param.i_threads = x264_clip3( h->param.i_threads, 1, X264_THREAD_MAX );
494     if( h->param.i_threads == 1 )
495         h->param.b_sliced_threads = 0;
496     h->i_thread_frames = h->param.b_sliced_threads ? 1 : h->param.i_threads;
497     if( h->i_thread_frames > 1 )
498         h->param.nalu_process = NULL;
499
500     h->param.i_keyint_max = x264_clip3( h->param.i_keyint_max, 1, X264_KEYINT_MAX_INFINITE );
501     if( h->param.i_keyint_max == 1 )
502     {
503         h->param.b_intra_refresh = 0;
504         h->param.analyse.i_weighted_pred = 0;
505     }
506
507     h->param.i_frame_packing = x264_clip3( h->param.i_frame_packing, -1, 5 );
508
509     /* Detect default ffmpeg settings and terminate with an error. */
510     if( b_open )
511     {
512         int score = 0;
513         score += h->param.analyse.i_me_range == 0;
514         score += h->param.rc.i_qp_step == 3;
515         score += h->param.i_keyint_max == 12;
516         score += h->param.rc.i_qp_min == 2;
517         score += h->param.rc.i_qp_max == 31;
518         score += h->param.rc.f_qcompress == 0.5;
519         score += fabs(h->param.rc.f_ip_factor - 1.25) < 0.01;
520         score += fabs(h->param.rc.f_pb_factor - 1.25) < 0.01;
521         score += h->param.analyse.inter == 0 && h->param.analyse.i_subpel_refine == 8;
522         if( score >= 5 )
523         {
524             x264_log( h, X264_LOG_ERROR, "broken ffmpeg default settings detected\n" );
525             x264_log( h, X264_LOG_ERROR, "use an encoding preset (e.g. -vpre medium)\n" );
526             x264_log( h, X264_LOG_ERROR, "preset usage: -vpre <speed> -vpre <profile>\n" );
527             x264_log( h, X264_LOG_ERROR, "speed presets are listed in x264 --help\n" );
528             x264_log( h, X264_LOG_ERROR, "profile is optional; x264 defaults to high\n" );
529             return -1;
530         }
531     }
532
533     if( h->param.rc.i_rc_method < 0 || h->param.rc.i_rc_method > 2 )
534     {
535         x264_log( h, X264_LOG_ERROR, "no ratecontrol method specified\n" );
536         return -1;
537     }
538     h->param.rc.f_rf_constant = x264_clip3f( h->param.rc.f_rf_constant, -QP_BD_OFFSET, 51 );
539     h->param.rc.f_rf_constant_max = x264_clip3f( h->param.rc.f_rf_constant_max, -QP_BD_OFFSET, 51 );
540     h->param.rc.i_qp_constant = x264_clip3( h->param.rc.i_qp_constant, 0, QP_MAX );
541     h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 0, 11 );
542     h->param.rc.f_ip_factor = X264_MAX( h->param.rc.f_ip_factor, 0.01f );
543     h->param.rc.f_pb_factor = X264_MAX( h->param.rc.f_pb_factor, 0.01f );
544     if( h->param.rc.i_rc_method == X264_RC_CRF )
545     {
546         h->param.rc.i_qp_constant = h->param.rc.f_rf_constant + QP_BD_OFFSET;
547         h->param.rc.i_bitrate = 0;
548     }
549     if( (h->param.rc.i_rc_method == X264_RC_CQP || h->param.rc.i_rc_method == X264_RC_CRF)
550         && h->param.rc.i_qp_constant == 0 )
551     {
552         h->mb.b_lossless = 1;
553         h->param.i_cqm_preset = X264_CQM_FLAT;
554         h->param.psz_cqm_file = NULL;
555         h->param.rc.i_rc_method = X264_RC_CQP;
556         h->param.rc.f_ip_factor = 1;
557         h->param.rc.f_pb_factor = 1;
558         h->param.analyse.b_psnr = 0;
559         h->param.analyse.b_ssim = 0;
560         h->param.analyse.i_chroma_qp_offset = 0;
561         h->param.analyse.i_trellis = 0;
562         h->param.analyse.b_fast_pskip = 0;
563         h->param.analyse.i_noise_reduction = 0;
564         h->param.analyse.b_psy = 0;
565         h->param.i_bframe = 0;
566         /* 8x8dct is not useful without RD in CAVLC lossless */
567         if( !h->param.b_cabac && h->param.analyse.i_subpel_refine < 6 )
568             h->param.analyse.b_transform_8x8 = 0;
569     }
570     if( h->param.rc.i_rc_method == X264_RC_CQP )
571     {
572         float qp_p = h->param.rc.i_qp_constant;
573         float qp_i = qp_p - 6*log2f( h->param.rc.f_ip_factor );
574         float qp_b = qp_p + 6*log2f( h->param.rc.f_pb_factor );
575         h->param.rc.i_qp_min = x264_clip3( (int)(X264_MIN3( qp_p, qp_i, qp_b )), 0, QP_MAX );
576         h->param.rc.i_qp_max = x264_clip3( (int)(X264_MAX3( qp_p, qp_i, qp_b ) + .999), 0, QP_MAX );
577         h->param.rc.i_aq_mode = 0;
578         h->param.rc.b_mb_tree = 0;
579         h->param.rc.i_bitrate = 0;
580     }
581     h->param.rc.i_qp_max = x264_clip3( h->param.rc.i_qp_max, 0, QP_MAX );
582     h->param.rc.i_qp_min = x264_clip3( h->param.rc.i_qp_min, 0, h->param.rc.i_qp_max );
583     h->param.rc.i_qp_step = x264_clip3( h->param.rc.i_qp_step, 0, QP_MAX );
584     h->param.rc.i_bitrate = x264_clip3( h->param.rc.i_bitrate, 0, 2000000 );
585     h->param.rc.i_vbv_buffer_size = x264_clip3( h->param.rc.i_vbv_buffer_size, 0, 2000000 );
586     h->param.rc.i_vbv_max_bitrate = x264_clip3( h->param.rc.i_vbv_max_bitrate, 0, 2000000 );
587     h->param.rc.f_vbv_buffer_init = x264_clip3f( h->param.rc.f_vbv_buffer_init, 0, 2000000 );
588     if( h->param.rc.i_vbv_buffer_size )
589     {
590         if( h->param.rc.i_rc_method == X264_RC_CQP )
591         {
592             x264_log( h, X264_LOG_WARNING, "VBV is incompatible with constant QP, ignored.\n" );
593             h->param.rc.i_vbv_max_bitrate = 0;
594             h->param.rc.i_vbv_buffer_size = 0;
595         }
596         else if( h->param.rc.i_vbv_max_bitrate == 0 )
597         {
598             if( h->param.rc.i_rc_method == X264_RC_ABR )
599             {
600                 x264_log( h, X264_LOG_WARNING, "VBV maxrate unspecified, assuming CBR\n" );
601                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
602             }
603             else
604             {
605                 x264_log( h, X264_LOG_WARNING, "VBV bufsize set but maxrate unspecified, ignored\n" );
606                 h->param.rc.i_vbv_buffer_size = 0;
607             }
608         }
609         else if( h->param.rc.i_vbv_max_bitrate < h->param.rc.i_bitrate &&
610                  h->param.rc.i_rc_method == X264_RC_ABR )
611         {
612             x264_log( h, X264_LOG_WARNING, "max bitrate less than average bitrate, assuming CBR\n" );
613             h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
614         }
615     }
616     else if( h->param.rc.i_vbv_max_bitrate )
617     {
618         x264_log( h, X264_LOG_WARNING, "VBV maxrate specified, but no bufsize, ignored\n" );
619         h->param.rc.i_vbv_max_bitrate = 0;
620     }
621
622     h->param.i_slice_max_size = X264_MAX( h->param.i_slice_max_size, 0 );
623     h->param.i_slice_max_mbs = X264_MAX( h->param.i_slice_max_mbs, 0 );
624
625     int max_slices = (h->param.i_height+((16<<PARAM_INTERLACED)-1))/(16<<PARAM_INTERLACED);
626     if( h->param.b_sliced_threads )
627         h->param.i_slice_count = x264_clip3( h->param.i_threads, 0, max_slices );
628     else
629     {
630         h->param.i_slice_count = x264_clip3( h->param.i_slice_count, 0, max_slices );
631         if( h->param.i_slice_max_mbs || h->param.i_slice_max_size )
632             h->param.i_slice_count = 0;
633     }
634
635     if( h->param.b_bluray_compat )
636     {
637         h->param.i_bframe_pyramid = X264_MIN( X264_B_PYRAMID_STRICT, h->param.i_bframe_pyramid );
638         h->param.i_bframe = X264_MIN( h->param.i_bframe, 3 );
639         h->param.b_aud = 1;
640         h->param.i_nal_hrd = X264_MAX( h->param.i_nal_hrd, X264_NAL_HRD_VBR );
641         h->param.i_slice_max_size = 0;
642         h->param.i_slice_max_mbs = 0;
643         h->param.b_intra_refresh = 0;
644         h->param.i_frame_reference = X264_MIN( h->param.i_frame_reference, 6 );
645         h->param.i_dpb_size = X264_MIN( h->param.i_dpb_size, 6 );
646         /* Don't use I-frames, because Blu-ray treats them the same as IDR. */
647         h->param.i_keyint_min = 1;
648         /* Due to the proliferation of broken players that don't handle dupes properly. */
649         h->param.analyse.i_weighted_pred = X264_MIN( h->param.analyse.i_weighted_pred, X264_WEIGHTP_SIMPLE );
650         if( h->param.b_fake_interlaced )
651             h->param.b_pic_struct = 1;
652     }
653
654     h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, X264_REF_MAX );
655     h->param.i_dpb_size = x264_clip3( h->param.i_dpb_size, 1, X264_REF_MAX );
656     if( h->param.i_scenecut_threshold < 0 )
657         h->param.i_scenecut_threshold = 0;
658     h->param.analyse.i_direct_mv_pred = x264_clip3( h->param.analyse.i_direct_mv_pred, X264_DIRECT_PRED_NONE, X264_DIRECT_PRED_AUTO );
659     if( !h->param.analyse.i_subpel_refine && h->param.analyse.i_direct_mv_pred > X264_DIRECT_PRED_SPATIAL )
660     {
661         x264_log( h, X264_LOG_WARNING, "subme=0 + direct=temporal is not supported\n" );
662         h->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
663     }
664     h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_MIN( X264_BFRAME_MAX, h->param.i_keyint_max-1 ) );
665     h->param.i_bframe_bias = x264_clip3( h->param.i_bframe_bias, -90, 100 );
666     if( h->param.i_bframe <= 1 )
667         h->param.i_bframe_pyramid = X264_B_PYRAMID_NONE;
668     h->param.i_bframe_pyramid = x264_clip3( h->param.i_bframe_pyramid, X264_B_PYRAMID_NONE, X264_B_PYRAMID_NORMAL );
669     h->param.i_bframe_adaptive = x264_clip3( h->param.i_bframe_adaptive, X264_B_ADAPT_NONE, X264_B_ADAPT_TRELLIS );
670     if( !h->param.i_bframe )
671     {
672         h->param.i_bframe_adaptive = X264_B_ADAPT_NONE;
673         h->param.analyse.i_direct_mv_pred = 0;
674         h->param.analyse.b_weighted_bipred = 0;
675         h->param.b_open_gop = 0;
676     }
677     if( h->param.b_intra_refresh && h->param.i_bframe_pyramid == X264_B_PYRAMID_NORMAL )
678     {
679         x264_log( h, X264_LOG_WARNING, "b-pyramid normal + intra-refresh is not supported\n" );
680         h->param.i_bframe_pyramid = X264_B_PYRAMID_STRICT;
681     }
682     if( h->param.b_intra_refresh && (h->param.i_frame_reference > 1 || h->param.i_dpb_size > 1) )
683     {
684         x264_log( h, X264_LOG_WARNING, "ref > 1 + intra-refresh is not supported\n" );
685         h->param.i_frame_reference = 1;
686         h->param.i_dpb_size = 1;
687     }
688     if( h->param.b_intra_refresh && h->param.b_open_gop )
689     {
690         x264_log( h, X264_LOG_WARNING, "intra-refresh is not compatible with open-gop\n" );
691         h->param.b_open_gop = 0;
692     }
693     float fps = h->param.i_fps_num > 0 && h->param.i_fps_den > 0 ? (float) h->param.i_fps_num / h->param.i_fps_den : 25.0;
694     if( h->param.i_keyint_min == X264_KEYINT_MIN_AUTO )
695         h->param.i_keyint_min = X264_MIN( h->param.i_keyint_max / 10, fps );
696     h->param.i_keyint_min = x264_clip3( h->param.i_keyint_min, 1, h->param.i_keyint_max/2+1 );
697     h->param.rc.i_lookahead = x264_clip3( h->param.rc.i_lookahead, 0, X264_LOOKAHEAD_MAX );
698     {
699         int maxrate = X264_MAX( h->param.rc.i_vbv_max_bitrate, h->param.rc.i_bitrate );
700         float bufsize = maxrate ? (float)h->param.rc.i_vbv_buffer_size / maxrate : 0;
701         h->param.rc.i_lookahead = X264_MIN( h->param.rc.i_lookahead, X264_MAX( h->param.i_keyint_max, bufsize*fps ) );
702     }
703
704     if( !h->param.i_timebase_num || !h->param.i_timebase_den || !(h->param.b_vfr_input || h->param.b_pulldown) )
705     {
706         h->param.i_timebase_num = h->param.i_fps_den;
707         h->param.i_timebase_den = h->param.i_fps_num;
708     }
709
710     h->param.rc.f_qcompress = x264_clip3f( h->param.rc.f_qcompress, 0.0, 1.0 );
711     if( h->param.i_keyint_max == 1 || h->param.rc.f_qcompress == 1 )
712         h->param.rc.b_mb_tree = 0;
713     if( (!h->param.b_intra_refresh && h->param.i_keyint_max != X264_KEYINT_MAX_INFINITE) &&
714         !h->param.rc.i_lookahead && h->param.rc.b_mb_tree )
715     {
716         x264_log( h, X264_LOG_WARNING, "lookaheadless mb-tree requires intra refresh or infinite keyint\n" );
717         h->param.rc.b_mb_tree = 0;
718     }
719     if( h->param.rc.b_stat_read )
720         h->param.rc.i_lookahead = 0;
721 #if HAVE_THREAD
722     if( h->param.i_sync_lookahead < 0 )
723         h->param.i_sync_lookahead = h->param.i_bframe + 1;
724     h->param.i_sync_lookahead = X264_MIN( h->param.i_sync_lookahead, X264_LOOKAHEAD_MAX );
725     if( h->param.rc.b_stat_read || h->i_thread_frames == 1 )
726         h->param.i_sync_lookahead = 0;
727 #else
728     h->param.i_sync_lookahead = 0;
729 #endif
730
731     h->param.i_deblocking_filter_alphac0 = x264_clip3( h->param.i_deblocking_filter_alphac0, -6, 6 );
732     h->param.i_deblocking_filter_beta    = x264_clip3( h->param.i_deblocking_filter_beta, -6, 6 );
733     h->param.analyse.i_luma_deadzone[0] = x264_clip3( h->param.analyse.i_luma_deadzone[0], 0, 32 );
734     h->param.analyse.i_luma_deadzone[1] = x264_clip3( h->param.analyse.i_luma_deadzone[1], 0, 32 );
735
736     h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, 0, 2 );
737
738     if( h->param.i_cqm_preset < X264_CQM_FLAT || h->param.i_cqm_preset > X264_CQM_CUSTOM )
739         h->param.i_cqm_preset = X264_CQM_FLAT;
740
741     if( h->param.analyse.i_me_method < X264_ME_DIA ||
742         h->param.analyse.i_me_method > X264_ME_TESA )
743         h->param.analyse.i_me_method = X264_ME_HEX;
744     h->param.analyse.i_me_range = x264_clip3( h->param.analyse.i_me_range, 4, 1024 );
745     if( h->param.analyse.i_me_range > 16 && h->param.analyse.i_me_method <= X264_ME_HEX )
746         h->param.analyse.i_me_range = 16;
747     if( h->param.analyse.i_me_method == X264_ME_TESA &&
748         (h->mb.b_lossless || h->param.analyse.i_subpel_refine <= 1) )
749         h->param.analyse.i_me_method = X264_ME_ESA;
750     h->param.analyse.b_mixed_references = h->param.analyse.b_mixed_references && h->param.i_frame_reference > 1;
751     h->param.analyse.inter &= X264_ANALYSE_PSUB16x16|X264_ANALYSE_PSUB8x8|X264_ANALYSE_BSUB16x16|
752                               X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
753     h->param.analyse.intra &= X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
754     if( !(h->param.analyse.inter & X264_ANALYSE_PSUB16x16) )
755         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
756     if( !h->param.analyse.b_transform_8x8 )
757     {
758         h->param.analyse.inter &= ~X264_ANALYSE_I8x8;
759         h->param.analyse.intra &= ~X264_ANALYSE_I8x8;
760     }
761     h->param.analyse.i_trellis = x264_clip3( h->param.analyse.i_trellis, 0, 2 );
762     h->param.rc.i_aq_mode = x264_clip3( h->param.rc.i_aq_mode, 0, 2 );
763     h->param.rc.f_aq_strength = x264_clip3f( h->param.rc.f_aq_strength, 0, 3 );
764     if( h->param.rc.f_aq_strength == 0 )
765         h->param.rc.i_aq_mode = 0;
766
767     if( h->param.i_log_level < X264_LOG_INFO )
768     {
769         h->param.analyse.b_psnr = 0;
770         h->param.analyse.b_ssim = 0;
771     }
772     /* Warn users trying to measure PSNR/SSIM with psy opts on. */
773     if( b_open && (h->param.analyse.b_psnr || h->param.analyse.b_ssim) )
774     {
775         char *s = NULL;
776
777         if( h->param.analyse.b_psy )
778         {
779             s = h->param.analyse.b_psnr ? "psnr" : "ssim";
780             x264_log( h, X264_LOG_WARNING, "--%s used with psy on: results will be invalid!\n", s );
781         }
782         else if( !h->param.rc.i_aq_mode && h->param.analyse.b_ssim )
783         {
784             x264_log( h, X264_LOG_WARNING, "--ssim used with AQ off: results will be invalid!\n" );
785             s = "ssim";
786         }
787         else if(  h->param.rc.i_aq_mode && h->param.analyse.b_psnr )
788         {
789             x264_log( h, X264_LOG_WARNING, "--psnr used with AQ on: results will be invalid!\n" );
790             s = "psnr";
791         }
792         if( s )
793             x264_log( h, X264_LOG_WARNING, "--tune %s should be used if attempting to benchmark %s!\n", s, s );
794     }
795
796     if( !h->param.analyse.b_psy )
797     {
798         h->param.analyse.f_psy_rd = 0;
799         h->param.analyse.f_psy_trellis = 0;
800     }
801     h->param.analyse.f_psy_rd = x264_clip3f( h->param.analyse.f_psy_rd, 0, 10 );
802     h->param.analyse.f_psy_trellis = x264_clip3f( h->param.analyse.f_psy_trellis, 0, 10 );
803     h->mb.i_psy_rd = h->param.analyse.i_subpel_refine >= 6 ? FIX8( h->param.analyse.f_psy_rd ) : 0;
804     h->mb.i_psy_trellis = h->param.analyse.i_trellis ? FIX8( h->param.analyse.f_psy_trellis / 4 ) : 0;
805     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -32, 32);
806     /* In 4:4:4 mode, chroma gets twice as much resolution, so we can halve its quality. */
807     if( b_open && i_csp >= X264_CSP_I444 && i_csp < X264_CSP_BGR && h->param.analyse.b_psy )
808         h->param.analyse.i_chroma_qp_offset += 6;
809     /* Psy RDO increases overall quantizers to improve the quality of luma--this indirectly hurts chroma quality */
810     /* so we lower the chroma QP offset to compensate */
811     if( b_open && h->mb.i_psy_rd )
812         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_rd < 0.25 ? 1 : 2;
813     /* Psy trellis has a similar effect. */
814     if( b_open && h->mb.i_psy_trellis )
815         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_trellis < 0.25 ? 1 : 2;
816     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
817     /* MB-tree requires AQ to be on, even if the strength is zero. */
818     if( !h->param.rc.i_aq_mode && h->param.rc.b_mb_tree )
819     {
820         h->param.rc.i_aq_mode = 1;
821         h->param.rc.f_aq_strength = 0;
822     }
823     h->param.analyse.i_noise_reduction = x264_clip3( h->param.analyse.i_noise_reduction, 0, 1<<16 );
824     if( h->param.analyse.i_subpel_refine >= 10 && (h->param.analyse.i_trellis != 2 || !h->param.rc.i_aq_mode) )
825         h->param.analyse.i_subpel_refine = 9;
826
827     {
828         const x264_level_t *l = x264_levels;
829         if( h->param.i_level_idc < 0 )
830         {
831             int maxrate_bak = h->param.rc.i_vbv_max_bitrate;
832             if( h->param.rc.i_rc_method == X264_RC_ABR && h->param.rc.i_vbv_buffer_size <= 0 )
833                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate * 2;
834             x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
835             do h->param.i_level_idc = l->level_idc;
836                 while( l[1].level_idc && x264_validate_levels( h, 0 ) && l++ );
837             h->param.rc.i_vbv_max_bitrate = maxrate_bak;
838         }
839         else
840         {
841             while( l->level_idc && l->level_idc != h->param.i_level_idc )
842                 l++;
843             if( l->level_idc == 0 )
844             {
845                 x264_log( h, X264_LOG_ERROR, "invalid level_idc: %d\n", h->param.i_level_idc );
846                 return -1;
847             }
848         }
849         if( h->param.analyse.i_mv_range <= 0 )
850             h->param.analyse.i_mv_range = l->mv_range >> PARAM_INTERLACED;
851         else
852             h->param.analyse.i_mv_range = x264_clip3(h->param.analyse.i_mv_range, 32, 512 >> PARAM_INTERLACED);
853     }
854
855     h->param.analyse.i_weighted_pred = x264_clip3( h->param.analyse.i_weighted_pred, X264_WEIGHTP_NONE, X264_WEIGHTP_SMART );
856
857     if( PARAM_INTERLACED )
858     {
859         if( h->param.analyse.i_me_method >= X264_ME_ESA )
860         {
861             x264_log( h, X264_LOG_WARNING, "interlace + me=esa is not implemented\n" );
862             h->param.analyse.i_me_method = X264_ME_UMH;
863         }
864         if( h->param.analyse.i_weighted_pred > 0 )
865         {
866             x264_log( h, X264_LOG_WARNING, "interlace + weightp is not implemented\n" );
867             h->param.analyse.i_weighted_pred = X264_WEIGHTP_NONE;
868         }
869     }
870
871     if( !h->param.analyse.i_weighted_pred && h->param.rc.b_mb_tree && h->param.analyse.b_psy )
872         h->param.analyse.i_weighted_pred = X264_WEIGHTP_FAKE;
873
874     if( h->i_thread_frames > 1 )
875     {
876         int r = h->param.analyse.i_mv_range_thread;
877         int r2;
878         if( r <= 0 )
879         {
880             // half of the available space is reserved and divided evenly among the threads,
881             // the rest is allocated to whichever thread is far enough ahead to use it.
882             // reserving more space increases quality for some videos, but costs more time
883             // in thread synchronization.
884             int max_range = (h->param.i_height + X264_THREAD_HEIGHT) / h->i_thread_frames - X264_THREAD_HEIGHT;
885             r = max_range / 2;
886         }
887         r = X264_MAX( r, h->param.analyse.i_me_range );
888         r = X264_MIN( r, h->param.analyse.i_mv_range );
889         // round up to use the whole mb row
890         r2 = (r & ~15) + ((-X264_THREAD_HEIGHT) & 15);
891         if( r2 < r )
892             r2 += 16;
893         x264_log( h, X264_LOG_DEBUG, "using mv_range_thread = %d\n", r2 );
894         h->param.analyse.i_mv_range_thread = r2;
895     }
896
897     if( h->param.rc.f_rate_tolerance < 0 )
898         h->param.rc.f_rate_tolerance = 0;
899     if( h->param.rc.f_qblur < 0 )
900         h->param.rc.f_qblur = 0;
901     if( h->param.rc.f_complexity_blur < 0 )
902         h->param.rc.f_complexity_blur = 0;
903
904     h->param.i_sps_id &= 31;
905
906     if( PARAM_INTERLACED )
907         h->param.b_pic_struct = 1;
908
909     h->param.i_nal_hrd = x264_clip3( h->param.i_nal_hrd, X264_NAL_HRD_NONE, X264_NAL_HRD_CBR );
910
911     if( h->param.i_nal_hrd && !h->param.rc.i_vbv_buffer_size )
912     {
913         x264_log( h, X264_LOG_WARNING, "NAL HRD parameters require VBV parameters\n" );
914         h->param.i_nal_hrd = X264_NAL_HRD_NONE;
915     }
916
917     if( h->param.i_nal_hrd == X264_NAL_HRD_CBR &&
918        (h->param.rc.i_bitrate != h->param.rc.i_vbv_max_bitrate || !h->param.rc.i_vbv_max_bitrate) )
919     {
920         x264_log( h, X264_LOG_WARNING, "CBR HRD requires constant bitrate\n" );
921         h->param.i_nal_hrd = X264_NAL_HRD_VBR;
922     }
923
924     /* ensure the booleans are 0 or 1 so they can be used in math */
925 #define BOOLIFY(x) h->param.x = !!h->param.x
926     BOOLIFY( b_cabac );
927     BOOLIFY( b_constrained_intra );
928     BOOLIFY( b_deblocking_filter );
929     BOOLIFY( b_deterministic );
930     BOOLIFY( b_sliced_threads );
931     BOOLIFY( b_interlaced );
932     BOOLIFY( b_intra_refresh );
933     BOOLIFY( b_visualize );
934     BOOLIFY( b_aud );
935     BOOLIFY( b_repeat_headers );
936     BOOLIFY( b_annexb );
937     BOOLIFY( b_vfr_input );
938     BOOLIFY( b_pulldown );
939     BOOLIFY( b_tff );
940     BOOLIFY( b_pic_struct );
941     BOOLIFY( b_fake_interlaced );
942     BOOLIFY( b_open_gop );
943     BOOLIFY( b_bluray_compat );
944     BOOLIFY( analyse.b_transform_8x8 );
945     BOOLIFY( analyse.b_weighted_bipred );
946     BOOLIFY( analyse.b_chroma_me );
947     BOOLIFY( analyse.b_mixed_references );
948     BOOLIFY( analyse.b_fast_pskip );
949     BOOLIFY( analyse.b_dct_decimate );
950     BOOLIFY( analyse.b_psy );
951     BOOLIFY( analyse.b_psnr );
952     BOOLIFY( analyse.b_ssim );
953     BOOLIFY( rc.b_stat_write );
954     BOOLIFY( rc.b_stat_read );
955     BOOLIFY( rc.b_mb_tree );
956 #undef BOOLIFY
957
958     return 0;
959 }
960
961 static void mbcmp_init( x264_t *h )
962 {
963     int satd = !h->mb.b_lossless && h->param.analyse.i_subpel_refine > 1;
964     memcpy( h->pixf.mbcmp, satd ? h->pixf.satd : h->pixf.sad_aligned, sizeof(h->pixf.mbcmp) );
965     memcpy( h->pixf.mbcmp_unaligned, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.mbcmp_unaligned) );
966     h->pixf.intra_mbcmp_x3_16x16 = satd ? h->pixf.intra_satd_x3_16x16 : h->pixf.intra_sad_x3_16x16;
967     h->pixf.intra_mbcmp_x3_8x16c = satd ? h->pixf.intra_satd_x3_8x16c : h->pixf.intra_sad_x3_8x16c;
968     h->pixf.intra_mbcmp_x3_8x8c  = satd ? h->pixf.intra_satd_x3_8x8c  : h->pixf.intra_sad_x3_8x8c;
969     h->pixf.intra_mbcmp_x3_8x8 = satd ? h->pixf.intra_sa8d_x3_8x8 : h->pixf.intra_sad_x3_8x8;
970     h->pixf.intra_mbcmp_x3_4x4 = satd ? h->pixf.intra_satd_x3_4x4 : h->pixf.intra_sad_x3_4x4;
971     h->pixf.intra_mbcmp_x9_4x4 = h->param.b_cpu_independent || h->mb.b_lossless ? NULL
972                                : satd ? h->pixf.intra_satd_x9_4x4 : h->pixf.intra_sad_x9_4x4;
973     h->pixf.intra_mbcmp_x9_8x8 = h->param.b_cpu_independent || h->mb.b_lossless ? NULL
974                                : satd ? h->pixf.intra_sa8d_x9_8x8 : h->pixf.intra_sad_x9_8x8;
975     satd &= h->param.analyse.i_me_method == X264_ME_TESA;
976     memcpy( h->pixf.fpelcmp, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.fpelcmp) );
977     memcpy( h->pixf.fpelcmp_x3, satd ? h->pixf.satd_x3 : h->pixf.sad_x3, sizeof(h->pixf.fpelcmp_x3) );
978     memcpy( h->pixf.fpelcmp_x4, satd ? h->pixf.satd_x4 : h->pixf.sad_x4, sizeof(h->pixf.fpelcmp_x4) );
979 }
980
981 static void chroma_dsp_init( x264_t *h )
982 {
983     memcpy( h->luma2chroma_pixel, x264_luma2chroma_pixel[CHROMA_FORMAT], sizeof(h->luma2chroma_pixel) );
984
985     switch( CHROMA_FORMAT )
986     {
987         case CHROMA_420:
988             memcpy( h->predict_chroma, h->predict_8x8c, sizeof(h->predict_chroma) );
989             h->mc.prefetch_fenc = h->mc.prefetch_fenc_420;
990             h->loopf.deblock_chroma[0] = h->loopf.deblock_h_chroma_420;
991             h->loopf.deblock_chroma_intra[0] = h->loopf.deblock_h_chroma_420_intra;
992             h->loopf.deblock_chroma_mbaff = h->loopf.deblock_chroma_420_mbaff;
993             h->loopf.deblock_chroma_intra_mbaff = h->loopf.deblock_chroma_420_intra_mbaff;
994             h->pixf.intra_mbcmp_x3_chroma = h->pixf.intra_mbcmp_x3_8x8c;
995             h->quantf.coeff_last[DCT_CHROMA_DC] = h->quantf.coeff_last4;
996             h->quantf.coeff_level_run[DCT_CHROMA_DC] = h->quantf.coeff_level_run4;
997             break;
998         case CHROMA_422:
999             memcpy( h->predict_chroma, h->predict_8x16c, sizeof(h->predict_chroma) );
1000             h->mc.prefetch_fenc = h->mc.prefetch_fenc_422;
1001             h->loopf.deblock_chroma[0] = h->loopf.deblock_h_chroma_422;
1002             h->loopf.deblock_chroma_intra[0] = h->loopf.deblock_h_chroma_422_intra;
1003             h->loopf.deblock_chroma_mbaff = h->loopf.deblock_chroma_422_mbaff;
1004             h->loopf.deblock_chroma_intra_mbaff = h->loopf.deblock_chroma_422_intra_mbaff;
1005             h->pixf.intra_mbcmp_x3_chroma = h->pixf.intra_mbcmp_x3_8x16c;
1006             h->quantf.coeff_last[DCT_CHROMA_DC] = h->quantf.coeff_last8;
1007             h->quantf.coeff_level_run[DCT_CHROMA_DC] = h->quantf.coeff_level_run8;
1008             break;
1009         case CHROMA_444:
1010             h->mc.prefetch_fenc = h->mc.prefetch_fenc_422; /* FIXME: doesn't cover V plane */
1011             h->loopf.deblock_chroma_mbaff = h->loopf.deblock_luma_mbaff;
1012             h->loopf.deblock_chroma_intra_mbaff = h->loopf.deblock_luma_intra_mbaff;
1013             break;
1014     }
1015 }
1016
1017 static void x264_set_aspect_ratio( x264_t *h, x264_param_t *param, int initial )
1018 {
1019     /* VUI */
1020     if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
1021     {
1022         uint32_t i_w = param->vui.i_sar_width;
1023         uint32_t i_h = param->vui.i_sar_height;
1024         uint32_t old_w = h->param.vui.i_sar_width;
1025         uint32_t old_h = h->param.vui.i_sar_height;
1026
1027         x264_reduce_fraction( &i_w, &i_h );
1028
1029         while( i_w > 65535 || i_h > 65535 )
1030         {
1031             i_w /= 2;
1032             i_h /= 2;
1033         }
1034
1035         x264_reduce_fraction( &i_w, &i_h );
1036
1037         if( i_w != old_w || i_h != old_h || initial )
1038         {
1039             h->param.vui.i_sar_width = 0;
1040             h->param.vui.i_sar_height = 0;
1041             if( i_w == 0 || i_h == 0 )
1042                 x264_log( h, X264_LOG_WARNING, "cannot create valid sample aspect ratio\n" );
1043             else
1044             {
1045                 x264_log( h, initial?X264_LOG_INFO:X264_LOG_DEBUG, "using SAR=%d/%d\n", i_w, i_h );
1046                 h->param.vui.i_sar_width = i_w;
1047                 h->param.vui.i_sar_height = i_h;
1048             }
1049             x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
1050         }
1051     }
1052 }
1053
1054 /****************************************************************************
1055  * x264_encoder_open:
1056  ****************************************************************************/
1057 x264_t *x264_encoder_open( x264_param_t *param )
1058 {
1059     x264_t *h;
1060     char buf[1000], *p;
1061     int qp, i_slicetype_length;
1062
1063     CHECKED_MALLOCZERO( h, sizeof(x264_t) );
1064
1065     /* Create a copy of param */
1066     memcpy( &h->param, param, sizeof(x264_param_t) );
1067
1068     if( param->param_free )
1069         param->param_free( param );
1070
1071     if( x264_threading_init() )
1072     {
1073         x264_log( h, X264_LOG_ERROR, "unable to initialize threading\n" );
1074         goto fail;
1075     }
1076
1077     if( x264_validate_parameters( h, 1 ) < 0 )
1078         goto fail;
1079
1080     if( h->param.psz_cqm_file )
1081         if( x264_cqm_parse_file( h, h->param.psz_cqm_file ) < 0 )
1082             goto fail;
1083
1084     if( h->param.rc.psz_stat_out )
1085         h->param.rc.psz_stat_out = strdup( h->param.rc.psz_stat_out );
1086     if( h->param.rc.psz_stat_in )
1087         h->param.rc.psz_stat_in = strdup( h->param.rc.psz_stat_in );
1088
1089     x264_reduce_fraction( &h->param.i_fps_num, &h->param.i_fps_den );
1090     x264_reduce_fraction( &h->param.i_timebase_num, &h->param.i_timebase_den );
1091
1092     /* Init x264_t */
1093     h->i_frame = -1;
1094     h->i_frame_num = 0;
1095     h->i_idr_pic_id = 0;
1096
1097     if( (uint64_t)h->param.i_timebase_den * 2 > UINT32_MAX )
1098     {
1099         x264_log( h, X264_LOG_ERROR, "Effective timebase denominator %u exceeds H.264 maximum\n", h->param.i_timebase_den );
1100         goto fail;
1101     }
1102
1103     x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
1104     x264_pps_init( h->pps, h->param.i_sps_id, &h->param, h->sps );
1105
1106     x264_set_aspect_ratio( h, &h->param, 1 );
1107
1108     x264_validate_levels( h, 1 );
1109
1110     h->chroma_qp_table = i_chroma_qp_table + 12 + h->pps->i_chroma_qp_index_offset;
1111
1112     if( x264_cqm_init( h ) < 0 )
1113         goto fail;
1114
1115     h->mb.i_mb_width = h->sps->i_mb_width;
1116     h->mb.i_mb_height = h->sps->i_mb_height;
1117     h->mb.i_mb_count = h->mb.i_mb_width * h->mb.i_mb_height;
1118
1119     h->mb.chroma_h_shift = CHROMA_FORMAT == CHROMA_420 || CHROMA_FORMAT == CHROMA_422;
1120     h->mb.chroma_v_shift = CHROMA_FORMAT == CHROMA_420;
1121
1122     /* Adaptive MBAFF and subme 0 are not supported as we require halving motion
1123      * vectors during prediction, resulting in hpel mvs.
1124      * The chosen solution is to make MBAFF non-adaptive in this case. */
1125     h->mb.b_adaptive_mbaff = PARAM_INTERLACED && h->param.analyse.i_subpel_refine;
1126
1127     /* Init frames. */
1128     if( h->param.i_bframe_adaptive == X264_B_ADAPT_TRELLIS && !h->param.rc.b_stat_read )
1129         h->frames.i_delay = X264_MAX(h->param.i_bframe,3)*4;
1130     else
1131         h->frames.i_delay = h->param.i_bframe;
1132     if( h->param.rc.b_mb_tree || h->param.rc.i_vbv_buffer_size )
1133         h->frames.i_delay = X264_MAX( h->frames.i_delay, h->param.rc.i_lookahead );
1134     i_slicetype_length = h->frames.i_delay;
1135     h->frames.i_delay += h->i_thread_frames - 1;
1136     h->frames.i_delay += h->param.i_sync_lookahead;
1137     h->frames.i_delay += h->param.b_vfr_input;
1138     h->frames.i_bframe_delay = h->param.i_bframe ? (h->param.i_bframe_pyramid ? 2 : 1) : 0;
1139
1140     h->frames.i_max_ref0 = h->param.i_frame_reference;
1141     h->frames.i_max_ref1 = X264_MIN( h->sps->vui.i_num_reorder_frames, h->param.i_frame_reference );
1142     h->frames.i_max_dpb  = h->sps->vui.i_max_dec_frame_buffering;
1143     h->frames.b_have_lowres = !h->param.rc.b_stat_read
1144         && ( h->param.rc.i_rc_method == X264_RC_ABR
1145           || h->param.rc.i_rc_method == X264_RC_CRF
1146           || h->param.i_bframe_adaptive
1147           || h->param.i_scenecut_threshold
1148           || h->param.rc.b_mb_tree
1149           || h->param.analyse.i_weighted_pred );
1150     h->frames.b_have_lowres |= h->param.rc.b_stat_read && h->param.rc.i_vbv_buffer_size > 0;
1151     h->frames.b_have_sub8x8_esa = !!(h->param.analyse.inter & X264_ANALYSE_PSUB8x8);
1152
1153     h->frames.i_last_idr =
1154     h->frames.i_last_keyframe = - h->param.i_keyint_max;
1155     h->frames.i_input    = 0;
1156     h->frames.i_largest_pts = h->frames.i_second_largest_pts = -1;
1157     h->frames.i_poc_last_open_gop = -1;
1158
1159     CHECKED_MALLOCZERO( h->frames.unused[0], (h->frames.i_delay + 3) * sizeof(x264_frame_t *) );
1160     /* Allocate room for max refs plus a few extra just in case. */
1161     CHECKED_MALLOCZERO( h->frames.unused[1], (h->i_thread_frames + X264_REF_MAX + 4) * sizeof(x264_frame_t *) );
1162     CHECKED_MALLOCZERO( h->frames.current, (h->param.i_sync_lookahead + h->param.i_bframe
1163                         + h->i_thread_frames + 3) * sizeof(x264_frame_t *) );
1164     if( h->param.analyse.i_weighted_pred > 0 )
1165         CHECKED_MALLOCZERO( h->frames.blank_unused, h->i_thread_frames * 4 * sizeof(x264_frame_t *) );
1166     h->i_ref[0] = h->i_ref[1] = 0;
1167     h->i_cpb_delay = h->i_coded_fields = h->i_disp_fields = 0;
1168     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);
1169     h->i_disp_fields_last_frame = -1;
1170     x264_rdo_init();
1171
1172     /* init CPU functions */
1173     x264_predict_16x16_init( h->param.cpu, h->predict_16x16 );
1174     x264_predict_8x8c_init( h->param.cpu, h->predict_8x8c );
1175     x264_predict_8x16c_init( h->param.cpu, h->predict_8x16c );
1176     x264_predict_8x8_init( h->param.cpu, h->predict_8x8, &h->predict_8x8_filter );
1177     x264_predict_4x4_init( h->param.cpu, h->predict_4x4 );
1178     x264_pixel_init( h->param.cpu, &h->pixf );
1179     x264_dct_init( h->param.cpu, &h->dctf );
1180     x264_zigzag_init( h->param.cpu, &h->zigzagf_progressive, &h->zigzagf_interlaced );
1181     memcpy( &h->zigzagf, PARAM_INTERLACED ? &h->zigzagf_interlaced : &h->zigzagf_progressive, sizeof(h->zigzagf) );
1182     x264_mc_init( h->param.cpu, &h->mc );
1183     x264_quant_init( h, h->param.cpu, &h->quantf );
1184     x264_deblock_init( h->param.cpu, &h->loopf, PARAM_INTERLACED );
1185     x264_bitstream_init( h->param.cpu, &h->bsf );
1186     if( h->param.b_cabac )
1187         x264_cabac_init( h );
1188     else
1189         x264_stack_align( x264_cavlc_init, h );
1190
1191     mbcmp_init( h );
1192     chroma_dsp_init( h );
1193
1194     p = buf + sprintf( buf, "using cpu capabilities:" );
1195     for( int i = 0; x264_cpu_names[i].flags; i++ )
1196     {
1197         if( !strcmp(x264_cpu_names[i].name, "SSE2")
1198             && h->param.cpu & (X264_CPU_SSE2_IS_FAST|X264_CPU_SSE2_IS_SLOW) )
1199             continue;
1200         if( !strcmp(x264_cpu_names[i].name, "SSE3")
1201             && (h->param.cpu & X264_CPU_SSSE3 || !(h->param.cpu & X264_CPU_CACHELINE_64)) )
1202             continue;
1203         if( !strcmp(x264_cpu_names[i].name, "SSE4.1")
1204             && (h->param.cpu & X264_CPU_SSE42) )
1205             continue;
1206         if( (h->param.cpu & x264_cpu_names[i].flags) == x264_cpu_names[i].flags
1207             && (!i || x264_cpu_names[i].flags != x264_cpu_names[i-1].flags) )
1208             p += sprintf( p, " %s", x264_cpu_names[i].name );
1209     }
1210     if( !h->param.cpu )
1211         p += sprintf( p, " none!" );
1212     x264_log( h, X264_LOG_INFO, "%s\n", buf );
1213
1214     float *logs = x264_analyse_prepare_costs( h );
1215     if( !logs )
1216         goto fail;
1217     for( qp = X264_MIN( h->param.rc.i_qp_min, QP_MAX_SPEC ); qp <= h->param.rc.i_qp_max; qp++ )
1218         if( x264_analyse_init_costs( h, logs, qp ) )
1219             goto fail;
1220     if( x264_analyse_init_costs( h, logs, X264_LOOKAHEAD_QP ) )
1221         goto fail;
1222     x264_free( logs );
1223
1224     static const uint16_t cost_mv_correct[7] = { 24, 47, 95, 189, 379, 757, 1515 };
1225     /* Checks for known miscompilation issues. */
1226     if( h->cost_mv[X264_LOOKAHEAD_QP][2013] != cost_mv_correct[BIT_DEPTH-8] )
1227     {
1228         x264_log( h, X264_LOG_ERROR, "MV cost test failed: x264 has been miscompiled!\n" );
1229         goto fail;
1230     }
1231
1232     /* Must be volatile or else GCC will optimize it out. */
1233     volatile int temp = 392;
1234     if( x264_clz( temp ) != 23 )
1235     {
1236         x264_log( h, X264_LOG_ERROR, "CLZ test failed: x264 has been miscompiled!\n" );
1237 #if ARCH_X86 || ARCH_X86_64
1238         x264_log( h, X264_LOG_ERROR, "Are you attempting to run an SSE4a-targeted build on a CPU that\n" );
1239         x264_log( h, X264_LOG_ERROR, "doesn't support it?\n" );
1240 #endif
1241         goto fail;
1242     }
1243
1244     h->out.i_nal = 0;
1245     h->out.i_bitstream = X264_MAX( 1000000, h->param.i_width * h->param.i_height * 4
1246         * ( h->param.rc.i_rc_method == X264_RC_ABR ? pow( 0.95, h->param.rc.i_qp_min )
1247           : pow( 0.95, h->param.rc.i_qp_constant ) * X264_MAX( 1, h->param.rc.f_ip_factor )));
1248
1249     h->nal_buffer_size = h->out.i_bitstream * 3/2 + 4;
1250     CHECKED_MALLOC( h->nal_buffer, h->nal_buffer_size );
1251
1252     if( h->param.i_threads > 1 &&
1253         x264_threadpool_init( &h->threadpool, h->param.i_threads, (void*)x264_encoder_thread_init, h ) )
1254         goto fail;
1255
1256     h->thread[0] = h;
1257     for( int i = 1; i < h->param.i_threads + !!h->param.i_sync_lookahead; i++ )
1258         CHECKED_MALLOC( h->thread[i], sizeof(x264_t) );
1259
1260     for( int i = 0; i < h->param.i_threads; i++ )
1261     {
1262         int init_nal_count = h->param.i_slice_count + 3;
1263         int allocate_threadlocal_data = !h->param.b_sliced_threads || !i;
1264         if( i > 0 )
1265             *h->thread[i] = *h;
1266
1267         if( allocate_threadlocal_data )
1268         {
1269             h->thread[i]->fdec = x264_frame_pop_unused( h, 1 );
1270             if( !h->thread[i]->fdec )
1271                 goto fail;
1272         }
1273         else
1274             h->thread[i]->fdec = h->thread[0]->fdec;
1275
1276         CHECKED_MALLOC( h->thread[i]->out.p_bitstream, h->out.i_bitstream );
1277         /* Start each thread with room for init_nal_count NAL units; it'll realloc later if needed. */
1278         CHECKED_MALLOC( h->thread[i]->out.nal, init_nal_count*sizeof(x264_nal_t) );
1279         h->thread[i]->out.i_nals_allocated = init_nal_count;
1280
1281         if( allocate_threadlocal_data && x264_macroblock_cache_allocate( h->thread[i] ) < 0 )
1282             goto fail;
1283     }
1284
1285     if( x264_lookahead_init( h, i_slicetype_length ) )
1286         goto fail;
1287
1288     for( int i = 0; i < h->param.i_threads; i++ )
1289         if( x264_macroblock_thread_allocate( h->thread[i], 0 ) < 0 )
1290             goto fail;
1291
1292     if( x264_ratecontrol_new( h ) < 0 )
1293         goto fail;
1294
1295     if( h->param.i_nal_hrd )
1296     {
1297         x264_log( h, X264_LOG_DEBUG, "HRD bitrate: %i bits/sec\n", h->sps->vui.hrd.i_bit_rate_unscaled );
1298         x264_log( h, X264_LOG_DEBUG, "CPB size: %i bits\n", h->sps->vui.hrd.i_cpb_size_unscaled );
1299     }
1300
1301     if( h->param.psz_dump_yuv )
1302     {
1303         /* create or truncate the reconstructed video file */
1304         FILE *f = fopen( h->param.psz_dump_yuv, "w" );
1305         if( !f )
1306         {
1307             x264_log( h, X264_LOG_ERROR, "dump_yuv: can't write to %s\n", h->param.psz_dump_yuv );
1308             goto fail;
1309         }
1310         else if( !x264_is_regular_file( f ) )
1311         {
1312             x264_log( h, X264_LOG_ERROR, "dump_yuv: incompatible with non-regular file %s\n", h->param.psz_dump_yuv );
1313             goto fail;
1314         }
1315         fclose( f );
1316     }
1317
1318     const char *profile = h->sps->i_profile_idc == PROFILE_BASELINE ? "Constrained Baseline" :
1319                           h->sps->i_profile_idc == PROFILE_MAIN ? "Main" :
1320                           h->sps->i_profile_idc == PROFILE_HIGH ? "High" :
1321                           h->sps->i_profile_idc == PROFILE_HIGH10 ? (h->sps->b_constraint_set3 == 1 ? "High 10 Intra" : "High 10") :
1322                           h->sps->i_profile_idc == PROFILE_HIGH422 ? (h->sps->b_constraint_set3 == 1 ? "High 4:2:2 Intra" : "High 4:2:2") :
1323                           h->sps->b_constraint_set3 == 1 ? "High 4:4:4 Intra" : "High 4:4:4 Predictive";
1324     char level[4];
1325     snprintf( level, sizeof(level), "%d.%d", h->sps->i_level_idc/10, h->sps->i_level_idc%10 );
1326     if( h->sps->i_level_idc == 9 || ( h->sps->i_level_idc == 11 && h->sps->b_constraint_set3 &&
1327         (h->sps->i_profile_idc >= PROFILE_BASELINE && h->sps->i_profile_idc <= PROFILE_EXTENDED) ) )
1328         strcpy( level, "1b" );
1329
1330     if( h->sps->i_profile_idc < PROFILE_HIGH10 )
1331     {
1332         x264_log( h, X264_LOG_INFO, "profile %s, level %s\n",
1333             profile, level );
1334     }
1335     else
1336     {
1337         static const char * const subsampling[4] = { "4:0:0", "4:2:0", "4:2:2", "4:4:4" };
1338         x264_log( h, X264_LOG_INFO, "profile %s, level %s, %s %d-bit\n",
1339             profile, level, subsampling[CHROMA_FORMAT], BIT_DEPTH );
1340     }
1341
1342     return h;
1343 fail:
1344     x264_free( h );
1345     return NULL;
1346 }
1347
1348 /****************************************************************************
1349  * x264_encoder_reconfig:
1350  ****************************************************************************/
1351 int x264_encoder_reconfig( x264_t *h, x264_param_t *param )
1352 {
1353     int rc_reconfig = 0;
1354     h = h->thread[h->thread[0]->i_thread_phase];
1355     x264_set_aspect_ratio( h, param, 0 );
1356 #define COPY(var) h->param.var = param->var
1357     COPY( i_frame_reference ); // but never uses more refs than initially specified
1358     COPY( i_bframe_bias );
1359     if( h->param.i_scenecut_threshold )
1360         COPY( i_scenecut_threshold ); // can't turn it on or off, only vary the threshold
1361     COPY( b_deblocking_filter );
1362     COPY( i_deblocking_filter_alphac0 );
1363     COPY( i_deblocking_filter_beta );
1364     COPY( i_frame_packing );
1365     COPY( analyse.inter );
1366     COPY( analyse.intra );
1367     COPY( analyse.i_direct_mv_pred );
1368     /* Scratch buffer prevents me_range from being increased for esa/tesa */
1369     if( h->param.analyse.i_me_method < X264_ME_ESA || param->analyse.i_me_range < h->param.analyse.i_me_range )
1370         COPY( analyse.i_me_range );
1371     COPY( analyse.i_noise_reduction );
1372     /* We can't switch out of subme=0 during encoding. */
1373     if( h->param.analyse.i_subpel_refine )
1374         COPY( analyse.i_subpel_refine );
1375     COPY( analyse.i_trellis );
1376     COPY( analyse.b_chroma_me );
1377     COPY( analyse.b_dct_decimate );
1378     COPY( analyse.b_fast_pskip );
1379     COPY( analyse.b_mixed_references );
1380     COPY( analyse.f_psy_rd );
1381     COPY( analyse.f_psy_trellis );
1382     COPY( crop_rect );
1383     // can only twiddle these if they were enabled to begin with:
1384     if( h->param.analyse.i_me_method >= X264_ME_ESA || param->analyse.i_me_method < X264_ME_ESA )
1385         COPY( analyse.i_me_method );
1386     if( h->param.analyse.i_me_method >= X264_ME_ESA && !h->frames.b_have_sub8x8_esa )
1387         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
1388     if( h->pps->b_transform_8x8_mode )
1389         COPY( analyse.b_transform_8x8 );
1390     if( h->frames.i_max_ref1 > 1 )
1391         COPY( i_bframe_pyramid );
1392     COPY( i_slice_max_size );
1393     COPY( i_slice_max_mbs );
1394     COPY( i_slice_count );
1395     COPY( b_tff );
1396
1397     /* VBV can't be turned on if it wasn't on to begin with */
1398     if( h->param.rc.i_vbv_max_bitrate > 0 && h->param.rc.i_vbv_buffer_size > 0 &&
1399           param->rc.i_vbv_max_bitrate > 0 &&   param->rc.i_vbv_buffer_size > 0 )
1400     {
1401         rc_reconfig |= h->param.rc.i_vbv_max_bitrate != param->rc.i_vbv_max_bitrate;
1402         rc_reconfig |= h->param.rc.i_vbv_buffer_size != param->rc.i_vbv_buffer_size;
1403         rc_reconfig |= h->param.rc.i_bitrate != param->rc.i_bitrate;
1404         COPY( rc.i_vbv_max_bitrate );
1405         COPY( rc.i_vbv_buffer_size );
1406         COPY( rc.i_bitrate );
1407     }
1408     rc_reconfig |= h->param.rc.f_rf_constant != param->rc.f_rf_constant;
1409     rc_reconfig |= h->param.rc.f_rf_constant_max != param->rc.f_rf_constant_max;
1410     COPY( rc.f_rf_constant );
1411     COPY( rc.f_rf_constant_max );
1412 #undef COPY
1413
1414     mbcmp_init( h );
1415
1416     int ret = x264_validate_parameters( h, 0 );
1417
1418     /* Supported reconfiguration options (1-pass only):
1419      * vbv-maxrate
1420      * vbv-bufsize
1421      * crf
1422      * bitrate (CBR only) */
1423     if( !ret && rc_reconfig )
1424         x264_ratecontrol_init_reconfigurable( h, 0 );
1425
1426     return ret;
1427 }
1428
1429 /****************************************************************************
1430  * x264_encoder_parameters:
1431  ****************************************************************************/
1432 void x264_encoder_parameters( x264_t *h, x264_param_t *param )
1433 {
1434     memcpy( param, &h->thread[h->i_thread_phase]->param, sizeof(x264_param_t) );
1435 }
1436
1437 /* internal usage */
1438 static void x264_nal_start( x264_t *h, int i_type, int i_ref_idc )
1439 {
1440     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1441
1442     nal->i_ref_idc        = i_ref_idc;
1443     nal->i_type           = i_type;
1444     nal->b_long_startcode = 1;
1445
1446     nal->i_payload= 0;
1447     nal->p_payload= &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8];
1448 }
1449
1450 /* if number of allocated nals is not enough, re-allocate a larger one. */
1451 static int x264_nal_check_buffer( x264_t *h )
1452 {
1453     if( h->out.i_nal >= h->out.i_nals_allocated )
1454     {
1455         x264_nal_t *new_out = x264_malloc( sizeof(x264_nal_t) * (h->out.i_nals_allocated*2) );
1456         if( !new_out )
1457             return -1;
1458         memcpy( new_out, h->out.nal, sizeof(x264_nal_t) * (h->out.i_nals_allocated) );
1459         x264_free( h->out.nal );
1460         h->out.nal = new_out;
1461         h->out.i_nals_allocated *= 2;
1462     }
1463     return 0;
1464 }
1465
1466 static int x264_nal_end( x264_t *h )
1467 {
1468     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1469     uint8_t *end = &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8];
1470     nal->i_payload = end - nal->p_payload;
1471     /* nal_escape_mmx reads past the end of the input.
1472      * While undefined padding wouldn't actually affect the output, it makes valgrind unhappy. */
1473     memset( end, 0xff, 32 );
1474     if( h->param.nalu_process )
1475         h->param.nalu_process( h, nal );
1476     h->out.i_nal++;
1477
1478     return x264_nal_check_buffer( h );
1479 }
1480
1481 static int x264_encoder_encapsulate_nals( x264_t *h, int start )
1482 {
1483     int nal_size = 0, previous_nal_size = 0;
1484
1485     if( h->param.nalu_process )
1486     {
1487         for( int i = start; i < h->out.i_nal; i++ )
1488             nal_size += h->out.nal[i].i_payload;
1489         return nal_size;
1490     }
1491
1492     for( int i = 0; i < start; i++ )
1493         previous_nal_size += h->out.nal[i].i_payload;
1494
1495     for( int i = start; i < h->out.i_nal; i++ )
1496         nal_size += h->out.nal[i].i_payload;
1497
1498     /* Worst-case NAL unit escaping: reallocate the buffer if it's too small. */
1499     int necessary_size = nal_size * 3/2 + h->out.i_nal * 4;
1500     if( h->nal_buffer_size < necessary_size )
1501     {
1502         h->nal_buffer_size = necessary_size * 2;
1503         uint8_t *buf = x264_malloc( h->nal_buffer_size );
1504         if( !buf )
1505             return -1;
1506         if( previous_nal_size )
1507             memcpy( buf, h->nal_buffer, previous_nal_size );
1508         x264_free( h->nal_buffer );
1509         h->nal_buffer = buf;
1510     }
1511
1512     uint8_t *nal_buffer = h->nal_buffer + previous_nal_size;
1513
1514     for( int i = start; i < h->out.i_nal; i++ )
1515     {
1516         h->out.nal[i].b_long_startcode = !i || h->out.nal[i].i_type == NAL_SPS || h->out.nal[i].i_type == NAL_PPS;
1517         x264_nal_encode( h, nal_buffer, &h->out.nal[i] );
1518         nal_buffer += h->out.nal[i].i_payload;
1519     }
1520
1521     x264_emms();
1522
1523     return nal_buffer - (h->nal_buffer + previous_nal_size);
1524 }
1525
1526 /****************************************************************************
1527  * x264_encoder_headers:
1528  ****************************************************************************/
1529 int x264_encoder_headers( x264_t *h, x264_nal_t **pp_nal, int *pi_nal )
1530 {
1531     int frame_size = 0;
1532     /* init bitstream context */
1533     h->out.i_nal = 0;
1534     bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
1535
1536     /* Write SEI, SPS and PPS. */
1537
1538     /* generate sequence parameters */
1539     x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
1540     x264_sps_write( &h->out.bs, h->sps );
1541     if( x264_nal_end( h ) )
1542         return -1;
1543
1544     /* generate picture parameters */
1545     x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
1546     x264_pps_write( &h->out.bs, h->sps, h->pps );
1547     if( x264_nal_end( h ) )
1548         return -1;
1549
1550     /* identify ourselves */
1551     x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
1552     if( x264_sei_version_write( h, &h->out.bs ) )
1553         return -1;
1554     if( x264_nal_end( h ) )
1555         return -1;
1556
1557     frame_size = x264_encoder_encapsulate_nals( h, 0 );
1558     if( frame_size < 0 )
1559         return -1;
1560
1561     /* now set output*/
1562     *pi_nal = h->out.i_nal;
1563     *pp_nal = &h->out.nal[0];
1564     h->out.i_nal = 0;
1565
1566     return frame_size;
1567 }
1568
1569 /* Check to see whether we have chosen a reference list ordering different
1570  * from the standard's default. */
1571 static inline void x264_reference_check_reorder( x264_t *h )
1572 {
1573     /* The reorder check doesn't check for missing frames, so just
1574      * force a reorder if one of the reference list is corrupt. */
1575     for( int i = 0; h->frames.reference[i]; i++ )
1576         if( h->frames.reference[i]->b_corrupt )
1577         {
1578             h->b_ref_reorder[0] = 1;
1579             return;
1580         }
1581     for( int list = 0; list <= (h->sh.i_type == SLICE_TYPE_B); list++ )
1582         for( int i = 0; i < h->i_ref[list] - 1; i++ )
1583         {
1584             int framenum_diff = h->fref[list][i+1]->i_frame_num - h->fref[list][i]->i_frame_num;
1585             int poc_diff = h->fref[list][i+1]->i_poc - h->fref[list][i]->i_poc;
1586             /* P and B-frames use different default orders. */
1587             if( h->sh.i_type == SLICE_TYPE_P ? framenum_diff > 0 : list == 1 ? poc_diff < 0 : poc_diff > 0 )
1588             {
1589                 h->b_ref_reorder[list] = 1;
1590                 return;
1591             }
1592         }
1593 }
1594
1595 /* return -1 on failure, else return the index of the new reference frame */
1596 int x264_weighted_reference_duplicate( x264_t *h, int i_ref, const x264_weight_t *w )
1597 {
1598     int i = h->i_ref[0];
1599     int j = 1;
1600     x264_frame_t *newframe;
1601     if( i <= 1 ) /* empty list, definitely can't duplicate frame */
1602         return -1;
1603
1604     //Duplication is only used in X264_WEIGHTP_SMART
1605     if( h->param.analyse.i_weighted_pred != X264_WEIGHTP_SMART )
1606         return -1;
1607
1608     /* Duplication is a hack to compensate for crappy rounding in motion compensation.
1609      * With high bit depth, it's not worth doing, so turn it off except in the case of
1610      * unweighted dupes. */
1611     if( BIT_DEPTH > 8 && w != x264_weight_none )
1612         return -1;
1613
1614     newframe = x264_frame_pop_blank_unused( h );
1615     if( !newframe )
1616         return -1;
1617
1618     //FIXME: probably don't need to copy everything
1619     *newframe = *h->fref[0][i_ref];
1620     newframe->i_reference_count = 1;
1621     newframe->orig = h->fref[0][i_ref];
1622     newframe->b_duplicate = 1;
1623     memcpy( h->fenc->weight[j], w, sizeof(h->fenc->weight[i]) );
1624
1625     /* shift the frames to make space for the dupe. */
1626     h->b_ref_reorder[0] = 1;
1627     if( h->i_ref[0] < X264_REF_MAX )
1628         ++h->i_ref[0];
1629     h->fref[0][X264_REF_MAX-1] = NULL;
1630     x264_frame_unshift( &h->fref[0][j], newframe );
1631
1632     return j;
1633 }
1634
1635 static void x264_weighted_pred_init( x264_t *h )
1636 {
1637     /* for now no analysis and set all weights to nothing */
1638     for( int i_ref = 0; i_ref < h->i_ref[0]; i_ref++ )
1639         h->fenc->weighted[i_ref] = h->fref[0][i_ref]->filtered[0][0];
1640
1641     // FIXME: This only supports weighting of one reference frame
1642     // and duplicates of that frame.
1643     h->fenc->i_lines_weighted = 0;
1644
1645     for( int i_ref = 0; i_ref < (h->i_ref[0] << SLICE_MBAFF); i_ref++ )
1646         for( int i = 0; i < 3; i++ )
1647             h->sh.weight[i_ref][i].weightfn = NULL;
1648
1649
1650     if( h->sh.i_type != SLICE_TYPE_P || h->param.analyse.i_weighted_pred <= 0 )
1651         return;
1652
1653     int i_padv = PADV << PARAM_INTERLACED;
1654     int denom = -1;
1655     int weightplane[2] = { 0, 0 };
1656     int buffer_next = 0;
1657     for( int i = 0; i < 3; i++ )
1658     {
1659         for( int j = 0; j < h->i_ref[0]; j++ )
1660         {
1661             if( h->fenc->weight[j][i].weightfn )
1662             {
1663                 h->sh.weight[j][i] = h->fenc->weight[j][i];
1664                 // if weight is useless, don't write it to stream
1665                 if( h->sh.weight[j][i].i_scale == 1<<h->sh.weight[j][i].i_denom && h->sh.weight[j][i].i_offset == 0 )
1666                     h->sh.weight[j][i].weightfn = NULL;
1667                 else
1668                 {
1669                     if( !weightplane[!!i] )
1670                     {
1671                         weightplane[!!i] = 1;
1672                         h->sh.weight[0][!!i].i_denom = denom = h->sh.weight[j][i].i_denom;
1673                         assert( x264_clip3( denom, 0, 7 ) == denom );
1674                     }
1675
1676                     assert( h->sh.weight[j][i].i_denom == denom );
1677                     if( !i )
1678                     {
1679                         h->fenc->weighted[j] = h->mb.p_weight_buf[buffer_next++] + h->fenc->i_stride[0] * i_padv + PADH;
1680                         //scale full resolution frame
1681                         if( h->param.i_threads == 1 )
1682                         {
1683                             pixel *src = h->fref[0][j]->filtered[0][0] - h->fref[0][j]->i_stride[0]*i_padv - PADH;
1684                             pixel *dst = h->fenc->weighted[j] - h->fenc->i_stride[0]*i_padv - PADH;
1685                             int stride = h->fenc->i_stride[0];
1686                             int width = h->fenc->i_width[0] + PADH*2;
1687                             int height = h->fenc->i_lines[0] + i_padv*2;
1688                             x264_weight_scale_plane( h, dst, stride, src, stride, width, height, &h->sh.weight[j][0] );
1689                             h->fenc->i_lines_weighted = height;
1690                         }
1691                     }
1692                 }
1693             }
1694         }
1695     }
1696
1697     if( weightplane[1] )
1698         for( int i = 0; i < h->i_ref[0]; i++ )
1699         {
1700             if( h->sh.weight[i][1].weightfn && !h->sh.weight[i][2].weightfn )
1701             {
1702                 h->sh.weight[i][2].i_scale = 1 << h->sh.weight[0][1].i_denom;
1703                 h->sh.weight[i][2].i_offset = 0;
1704             }
1705             else if( h->sh.weight[i][2].weightfn && !h->sh.weight[i][1].weightfn )
1706             {
1707                 h->sh.weight[i][1].i_scale = 1 << h->sh.weight[0][1].i_denom;
1708                 h->sh.weight[i][1].i_offset = 0;
1709             }
1710         }
1711
1712     if( !weightplane[0] )
1713         h->sh.weight[0][0].i_denom = 0;
1714     if( !weightplane[1] )
1715         h->sh.weight[0][1].i_denom = 0;
1716     h->sh.weight[0][2].i_denom = h->sh.weight[0][1].i_denom;
1717 }
1718
1719 static inline int x264_reference_distance( x264_t *h, x264_frame_t *frame )
1720 {
1721     if( h->param.i_frame_packing == 5 )
1722         return abs((h->fenc->i_frame&~1) - (frame->i_frame&~1)) +
1723                   ((h->fenc->i_frame&1) != (frame->i_frame&1));
1724     else
1725         return abs(h->fenc->i_frame - frame->i_frame);
1726 }
1727
1728 static inline void x264_reference_build_list( x264_t *h, int i_poc )
1729 {
1730     int b_ok;
1731
1732     /* build ref list 0/1 */
1733     h->mb.pic.i_fref[0] = h->i_ref[0] = 0;
1734     h->mb.pic.i_fref[1] = h->i_ref[1] = 0;
1735     if( h->sh.i_type == SLICE_TYPE_I )
1736         return;
1737
1738     for( int i = 0; h->frames.reference[i]; i++ )
1739     {
1740         if( h->frames.reference[i]->b_corrupt )
1741             continue;
1742         if( h->frames.reference[i]->i_poc < i_poc )
1743             h->fref[0][h->i_ref[0]++] = h->frames.reference[i];
1744         else if( h->frames.reference[i]->i_poc > i_poc )
1745             h->fref[1][h->i_ref[1]++] = h->frames.reference[i];
1746     }
1747
1748     /* Order reference lists by distance from the current frame. */
1749     for( int list = 0; list < 2; list++ )
1750     {
1751         h->fref_nearest[list] = h->fref[list][0];
1752         do
1753         {
1754             b_ok = 1;
1755             for( int i = 0; i < h->i_ref[list] - 1; i++ )
1756             {
1757                 if( list ? h->fref[list][i+1]->i_poc < h->fref_nearest[list]->i_poc
1758                          : h->fref[list][i+1]->i_poc > h->fref_nearest[list]->i_poc )
1759                     h->fref_nearest[list] = h->fref[list][i+1];
1760                 if( x264_reference_distance( h, h->fref[list][i] ) > x264_reference_distance( h, h->fref[list][i+1] ) )
1761                 {
1762                     XCHG( x264_frame_t*, h->fref[list][i], h->fref[list][i+1] );
1763                     b_ok = 0;
1764                     break;
1765                 }
1766             }
1767         } while( !b_ok );
1768     }
1769
1770     if( h->sh.i_mmco_remove_from_end )
1771         for( int i = h->i_ref[0]-1; i >= h->i_ref[0] - h->sh.i_mmco_remove_from_end; i-- )
1772         {
1773             int diff = h->i_frame_num - h->fref[0][i]->i_frame_num;
1774             h->sh.mmco[h->sh.i_mmco_command_count].i_poc = h->fref[0][i]->i_poc;
1775             h->sh.mmco[h->sh.i_mmco_command_count++].i_difference_of_pic_nums = diff;
1776         }
1777
1778     x264_reference_check_reorder( h );
1779
1780     h->i_ref[1] = X264_MIN( h->i_ref[1], h->frames.i_max_ref1 );
1781     h->i_ref[0] = X264_MIN( h->i_ref[0], h->frames.i_max_ref0 );
1782     h->i_ref[0] = X264_MIN( h->i_ref[0], h->param.i_frame_reference ); // if reconfig() has lowered the limit
1783
1784     /* For Blu-ray compliance, don't reference frames outside of the minigop. */
1785     if( IS_X264_TYPE_B( h->fenc->i_type ) && h->param.b_bluray_compat )
1786         h->i_ref[0] = X264_MIN( h->i_ref[0], IS_X264_TYPE_B( h->fref[0][0]->i_type ) + 1 );
1787
1788     /* add duplicates */
1789     if( h->fenc->i_type == X264_TYPE_P )
1790     {
1791         int idx = -1;
1792         if( h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE )
1793         {
1794             x264_weight_t w[3];
1795             w[1].weightfn = w[2].weightfn = NULL;
1796             if( h->param.rc.b_stat_read )
1797                 x264_ratecontrol_set_weights( h, h->fenc );
1798
1799             if( !h->fenc->weight[0][0].weightfn )
1800             {
1801                 h->fenc->weight[0][0].i_denom = 0;
1802                 SET_WEIGHT( w[0], 1, 1, 0, -1 );
1803                 idx = x264_weighted_reference_duplicate( h, 0, w );
1804             }
1805             else
1806             {
1807                 if( h->fenc->weight[0][0].i_scale == 1<<h->fenc->weight[0][0].i_denom )
1808                 {
1809                     SET_WEIGHT( h->fenc->weight[0][0], 1, 1, 0, h->fenc->weight[0][0].i_offset );
1810                 }
1811                 x264_weighted_reference_duplicate( h, 0, x264_weight_none );
1812                 if( h->fenc->weight[0][0].i_offset > -128 )
1813                 {
1814                     w[0] = h->fenc->weight[0][0];
1815                     w[0].i_offset--;
1816                     h->mc.weight_cache( h, &w[0] );
1817                     idx = x264_weighted_reference_duplicate( h, 0, w );
1818                 }
1819             }
1820         }
1821         h->mb.ref_blind_dupe = idx;
1822     }
1823
1824     assert( h->i_ref[0] + h->i_ref[1] <= X264_REF_MAX );
1825     h->mb.pic.i_fref[0] = h->i_ref[0];
1826     h->mb.pic.i_fref[1] = h->i_ref[1];
1827 }
1828
1829 static void x264_fdec_filter_row( x264_t *h, int mb_y, int b_inloop )
1830 {
1831     /* mb_y is the mb to be encoded next, not the mb to be filtered here */
1832     int b_hpel = h->fdec->b_kept_as_ref;
1833     int b_deblock = h->sh.i_disable_deblocking_filter_idc != 1;
1834     int b_end = mb_y == h->i_threadslice_end;
1835     int b_measure_quality = 1;
1836     int min_y = mb_y - (1 << SLICE_MBAFF);
1837     int b_start = min_y == h->i_threadslice_start;
1838     /* Even in interlaced mode, deblocking never modifies more than 4 pixels
1839      * above each MB, as bS=4 doesn't happen for the top of interlaced mbpairs. */
1840     int minpix_y = min_y*16 - 4 * !b_start;
1841     int maxpix_y = mb_y*16 - 4 * !b_end;
1842     b_deblock &= b_hpel || h->param.psz_dump_yuv;
1843     if( h->param.b_sliced_threads && b_start && min_y && !b_inloop )
1844     {
1845         b_deblock = 0;         /* We already deblocked on the inloop pass. */
1846         b_measure_quality = 0; /* We already measured quality on the inloop pass. */
1847     }
1848     if( mb_y & SLICE_MBAFF )
1849         return;
1850     if( min_y < h->i_threadslice_start )
1851         return;
1852
1853     if( b_deblock )
1854         for( int y = min_y; y < mb_y; y += (1 << SLICE_MBAFF) )
1855             x264_frame_deblock_row( h, y );
1856
1857     /* FIXME: Prediction requires different borders for interlaced/progressive mc,
1858      * but the actual image data is equivalent. For now, maintain this
1859      * consistency by copying deblocked pixels between planes. */
1860     if( PARAM_INTERLACED )
1861         for( int p = 0; p < h->fdec->i_plane; p++ )
1862             for( int i = minpix_y>>(CHROMA_V_SHIFT && p); i < maxpix_y>>(CHROMA_V_SHIFT && p); i++ )
1863                 memcpy( h->fdec->plane_fld[p] + i*h->fdec->i_stride[p],
1864                         h->fdec->plane[p]     + i*h->fdec->i_stride[p],
1865                         h->mb.i_mb_width*16*sizeof(pixel) );
1866
1867     if( b_hpel )
1868     {
1869         int end = mb_y == h->mb.i_mb_height;
1870         x264_frame_expand_border( h, h->fdec, min_y, end );
1871         if( h->param.analyse.i_subpel_refine )
1872         {
1873             x264_frame_filter( h, h->fdec, min_y, end );
1874             x264_frame_expand_border_filtered( h, h->fdec, min_y, end );
1875         }
1876     }
1877
1878     if( SLICE_MBAFF )
1879         for( int i = 0; i < 3; i++ )
1880         {
1881             XCHG( pixel *, h->intra_border_backup[0][i], h->intra_border_backup[3][i] );
1882             XCHG( pixel *, h->intra_border_backup[1][i], h->intra_border_backup[4][i] );
1883         }
1884
1885     if( h->i_thread_frames > 1 && h->fdec->b_kept_as_ref )
1886         x264_frame_cond_broadcast( h->fdec, mb_y*16 + (b_end ? 10000 : -(X264_THREAD_HEIGHT << SLICE_MBAFF)) );
1887
1888     if( b_measure_quality )
1889     {
1890         maxpix_y = X264_MIN( maxpix_y, h->param.i_height );
1891         if( h->param.analyse.b_psnr )
1892         {
1893             for( int p = 0; p < (CHROMA444 ? 3 : 1); p++ )
1894                 h->stat.frame.i_ssd[p] += x264_pixel_ssd_wxh( &h->pixf,
1895                     h->fdec->plane[p] + minpix_y * h->fdec->i_stride[p], h->fdec->i_stride[p],
1896                     h->fenc->plane[p] + minpix_y * h->fenc->i_stride[p], h->fenc->i_stride[p],
1897                     h->param.i_width, maxpix_y-minpix_y );
1898             if( !CHROMA444 )
1899             {
1900                 uint64_t ssd_u, ssd_v;
1901                 int v_shift = CHROMA_V_SHIFT;
1902                 x264_pixel_ssd_nv12( &h->pixf,
1903                     h->fdec->plane[1] + (minpix_y>>v_shift) * h->fdec->i_stride[1], h->fdec->i_stride[1],
1904                     h->fenc->plane[1] + (minpix_y>>v_shift) * h->fenc->i_stride[1], h->fenc->i_stride[1],
1905                     h->param.i_width>>1, (maxpix_y-minpix_y)>>v_shift, &ssd_u, &ssd_v );
1906                 h->stat.frame.i_ssd[1] += ssd_u;
1907                 h->stat.frame.i_ssd[2] += ssd_v;
1908             }
1909         }
1910
1911         if( h->param.analyse.b_ssim )
1912         {
1913             int ssim_cnt;
1914             x264_emms();
1915             /* offset by 2 pixels to avoid alignment of ssim blocks with dct blocks,
1916              * and overlap by 4 */
1917             minpix_y += b_start ? 2 : -6;
1918             h->stat.frame.f_ssim +=
1919                 x264_pixel_ssim_wxh( &h->pixf,
1920                     h->fdec->plane[0] + 2+minpix_y*h->fdec->i_stride[0], h->fdec->i_stride[0],
1921                     h->fenc->plane[0] + 2+minpix_y*h->fenc->i_stride[0], h->fenc->i_stride[0],
1922                     h->param.i_width-2, maxpix_y-minpix_y, h->scratch_buffer, &ssim_cnt );
1923             h->stat.frame.i_ssim_cnt += ssim_cnt;
1924         }
1925     }
1926 }
1927
1928 static inline int x264_reference_update( x264_t *h )
1929 {
1930     if( !h->fdec->b_kept_as_ref )
1931     {
1932         if( h->i_thread_frames > 1 )
1933         {
1934             x264_frame_push_unused( h, h->fdec );
1935             h->fdec = x264_frame_pop_unused( h, 1 );
1936             if( !h->fdec )
1937                 return -1;
1938         }
1939         return 0;
1940     }
1941
1942     /* apply mmco from previous frame. */
1943     for( int i = 0; i < h->sh.i_mmco_command_count; i++ )
1944         for( int j = 0; h->frames.reference[j]; j++ )
1945             if( h->frames.reference[j]->i_poc == h->sh.mmco[i].i_poc )
1946                 x264_frame_push_unused( h, x264_frame_shift( &h->frames.reference[j] ) );
1947
1948     /* move frame in the buffer */
1949     x264_frame_push( h->frames.reference, h->fdec );
1950     if( h->frames.reference[h->sps->i_num_ref_frames] )
1951         x264_frame_push_unused( h, x264_frame_shift( h->frames.reference ) );
1952     h->fdec = x264_frame_pop_unused( h, 1 );
1953     if( !h->fdec )
1954         return -1;
1955     return 0;
1956 }
1957
1958 static inline void x264_reference_reset( x264_t *h )
1959 {
1960     while( h->frames.reference[0] )
1961         x264_frame_push_unused( h, x264_frame_pop( h->frames.reference ) );
1962     h->fdec->i_poc =
1963     h->fenc->i_poc = 0;
1964 }
1965
1966 static inline void x264_reference_hierarchy_reset( x264_t *h )
1967 {
1968     int ref;
1969     int b_hasdelayframe = 0;
1970
1971     /* look for delay frames -- chain must only contain frames that are disposable */
1972     for( int i = 0; h->frames.current[i] && IS_DISPOSABLE( h->frames.current[i]->i_type ); i++ )
1973         b_hasdelayframe |= h->frames.current[i]->i_coded
1974                         != h->frames.current[i]->i_frame + h->sps->vui.i_num_reorder_frames;
1975
1976     /* This function must handle b-pyramid and clear frames for open-gop */
1977     if( h->param.i_bframe_pyramid != X264_B_PYRAMID_STRICT && !b_hasdelayframe && h->frames.i_poc_last_open_gop == -1 )
1978         return;
1979
1980     /* Remove last BREF. There will never be old BREFs in the
1981      * dpb during a BREF decode when pyramid == STRICT */
1982     for( ref = 0; h->frames.reference[ref]; ref++ )
1983     {
1984         if( ( h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT
1985             && h->frames.reference[ref]->i_type == X264_TYPE_BREF )
1986             || ( h->frames.reference[ref]->i_poc < h->frames.i_poc_last_open_gop
1987             && h->sh.i_type != SLICE_TYPE_B ) )
1988         {
1989             int diff = h->i_frame_num - h->frames.reference[ref]->i_frame_num;
1990             h->sh.mmco[h->sh.i_mmco_command_count].i_difference_of_pic_nums = diff;
1991             h->sh.mmco[h->sh.i_mmco_command_count++].i_poc = h->frames.reference[ref]->i_poc;
1992             x264_frame_push_unused( h, x264_frame_shift( &h->frames.reference[ref] ) );
1993             h->b_ref_reorder[0] = 1;
1994             ref--;
1995         }
1996     }
1997
1998     /* Prepare room in the dpb for the delayed display time of the later b-frame's */
1999     if( h->param.i_bframe_pyramid )
2000         h->sh.i_mmco_remove_from_end = X264_MAX( ref + 2 - h->frames.i_max_dpb, 0 );
2001 }
2002
2003 static inline void x264_slice_init( x264_t *h, int i_nal_type, int i_global_qp )
2004 {
2005     /* ------------------------ Create slice header  ----------------------- */
2006     if( i_nal_type == NAL_SLICE_IDR )
2007     {
2008         x264_slice_header_init( h, &h->sh, h->sps, h->pps, h->i_idr_pic_id, h->i_frame_num, i_global_qp );
2009
2010         /* alternate id */
2011         h->i_idr_pic_id ^= 1;
2012     }
2013     else
2014     {
2015         x264_slice_header_init( h, &h->sh, h->sps, h->pps, -1, h->i_frame_num, i_global_qp );
2016
2017         h->sh.i_num_ref_idx_l0_active = h->i_ref[0] <= 0 ? 1 : h->i_ref[0];
2018         h->sh.i_num_ref_idx_l1_active = h->i_ref[1] <= 0 ? 1 : h->i_ref[1];
2019         if( h->sh.i_num_ref_idx_l0_active != h->pps->i_num_ref_idx_l0_default_active ||
2020             (h->sh.i_type == SLICE_TYPE_B && h->sh.i_num_ref_idx_l1_active != h->pps->i_num_ref_idx_l1_default_active) )
2021         {
2022             h->sh.b_num_ref_idx_override = 1;
2023         }
2024     }
2025
2026     if( h->fenc->i_type == X264_TYPE_BREF && h->param.b_bluray_compat && h->sh.i_mmco_command_count )
2027     {
2028         h->b_sh_backup = 1;
2029         h->sh_backup = h->sh;
2030     }
2031
2032     h->fdec->i_frame_num = h->sh.i_frame_num;
2033
2034     if( h->sps->i_poc_type == 0 )
2035     {
2036         h->sh.i_poc = h->fdec->i_poc;
2037         if( PARAM_INTERLACED )
2038         {
2039             h->sh.i_delta_poc_bottom = h->param.b_tff ? 1 : -1;
2040             h->sh.i_poc += h->sh.i_delta_poc_bottom == -1;
2041         }
2042         else
2043             h->sh.i_delta_poc_bottom = 0;
2044         h->fdec->i_delta_poc[0] = h->sh.i_delta_poc_bottom == -1;
2045         h->fdec->i_delta_poc[1] = h->sh.i_delta_poc_bottom ==  1;
2046     }
2047     else
2048     {
2049         /* Nothing to do ? */
2050     }
2051
2052     x264_macroblock_slice_init( h );
2053 }
2054
2055 typedef struct
2056 {
2057     int skip;
2058     uint8_t cabac_prevbyte;
2059     bs_t bs;
2060     x264_cabac_t cabac;
2061     x264_frame_stat_t stat;
2062 } x264_bs_bak_t;
2063
2064 static ALWAYS_INLINE void x264_bitstream_backup( x264_t *h, x264_bs_bak_t *bak, int i_skip, int full )
2065 {
2066     if( full )
2067         bak->stat = h->stat.frame;
2068     else
2069     {
2070         bak->stat.i_mv_bits = h->stat.frame.i_mv_bits;
2071         bak->stat.i_tex_bits = h->stat.frame.i_tex_bits;
2072     }
2073     /* In the per-MB backup, we don't need the contexts because flushing the CABAC
2074      * encoder has no context dependency and in this case, a slice is ended (and
2075      * thus the content of all contexts are thrown away). */
2076     if( h->param.b_cabac )
2077     {
2078         if( full )
2079             memcpy( &bak->cabac, &h->cabac, sizeof(x264_cabac_t) );
2080         else
2081             memcpy( &bak->cabac, &h->cabac, offsetof(x264_cabac_t, f8_bits_encoded) );
2082         /* x264's CABAC writer modifies the previous byte during carry, so it has to be
2083          * backed up. */
2084         bak->cabac_prevbyte = h->cabac.p[-1];
2085     }
2086     else
2087     {
2088         bak->bs = h->out.bs;
2089         bak->skip = i_skip;
2090     }
2091 }
2092
2093 static ALWAYS_INLINE void x264_bitstream_restore( x264_t *h, x264_bs_bak_t *bak, int *skip, int full )
2094 {
2095     if( full )
2096         h->stat.frame = bak->stat;
2097     else
2098     {
2099         h->stat.frame.i_mv_bits = bak->stat.i_mv_bits;
2100         h->stat.frame.i_tex_bits = bak->stat.i_tex_bits;
2101     }
2102     if( h->param.b_cabac )
2103     {
2104         if( full )
2105             memcpy( &h->cabac, &bak->cabac, sizeof(x264_cabac_t) );
2106         else
2107             memcpy( &h->cabac, &bak->cabac, offsetof(x264_cabac_t, f8_bits_encoded) );
2108         h->cabac.p[-1] = bak->cabac_prevbyte;
2109     }
2110     else
2111     {
2112         h->out.bs = bak->bs;
2113         *skip = bak->skip;
2114     }
2115 }
2116
2117 static int x264_slice_write( x264_t *h )
2118 {
2119     int i_skip;
2120     int mb_xy, i_mb_x, i_mb_y;
2121     /* NALUs other than the first use a 3-byte startcode.
2122      * Add one extra byte for the rbsp, and one more for the final CABAC putbyte.
2123      * Then add an extra 5 bytes just in case, to account for random NAL escapes and
2124      * other inaccuracies. */
2125     int overhead_guess = (NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal)) + 1 + h->param.b_cabac + 5;
2126     int slice_max_size = h->param.i_slice_max_size > 0 ? (h->param.i_slice_max_size-overhead_guess)*8 : 0;
2127     int back_up_bitstream = slice_max_size || (!h->param.b_cabac && h->sps->i_profile_idc < PROFILE_HIGH);
2128     int starting_bits = bs_pos(&h->out.bs);
2129     int b_deblock = h->sh.i_disable_deblocking_filter_idc != 1;
2130     int b_hpel = h->fdec->b_kept_as_ref;
2131     uint8_t *last_emu_check;
2132     x264_bs_bak_t bs_bak[1];
2133     b_deblock &= b_hpel || h->param.psz_dump_yuv;
2134     bs_realign( &h->out.bs );
2135
2136     /* Slice */
2137     x264_nal_start( h, h->i_nal_type, h->i_nal_ref_idc );
2138     h->out.nal[h->out.i_nal].i_first_mb = h->sh.i_first_mb;
2139
2140     /* Slice header */
2141     x264_macroblock_thread_init( h );
2142
2143     /* If this isn't the first slice in the threadslice, set the slice QP
2144      * equal to the last QP in the previous slice for more accurate
2145      * CABAC initialization. */
2146     if( h->sh.i_first_mb != h->i_threadslice_start * h->mb.i_mb_width )
2147     {
2148         h->sh.i_qp = h->mb.i_last_qp;
2149         h->sh.i_qp_delta = h->sh.i_qp - h->pps->i_pic_init_qp;
2150     }
2151
2152     x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
2153     if( h->param.b_cabac )
2154     {
2155         /* alignment needed */
2156         bs_align_1( &h->out.bs );
2157
2158         /* init cabac */
2159         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 );
2160         x264_cabac_encode_init ( &h->cabac, h->out.bs.p, h->out.bs.p_end );
2161         last_emu_check = h->cabac.p;
2162     }
2163     else
2164         last_emu_check = h->out.bs.p;
2165     h->mb.i_last_qp = h->sh.i_qp;
2166     h->mb.i_last_dqp = 0;
2167     h->mb.field_decoding_flag = 0;
2168
2169     i_mb_y = h->sh.i_first_mb / h->mb.i_mb_width;
2170     i_mb_x = h->sh.i_first_mb % h->mb.i_mb_width;
2171     i_skip = 0;
2172
2173     while( 1 )
2174     {
2175         mb_xy = i_mb_x + i_mb_y * h->mb.i_mb_width;
2176         int mb_spos = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2177
2178         if( !(i_mb_y & SLICE_MBAFF) )
2179         {
2180             if( x264_bitstream_check_buffer( h ) )
2181                 return -1;
2182
2183             if( back_up_bitstream )
2184                 x264_bitstream_backup( h, &bs_bak[0], i_skip, 0 );
2185         }
2186
2187         if( i_mb_x == 0 && !h->mb.b_reencode_mb )
2188             x264_fdec_filter_row( h, i_mb_y, 1 );
2189
2190         if( PARAM_INTERLACED )
2191         {
2192             if( h->mb.b_adaptive_mbaff )
2193             {
2194                 if( !(i_mb_y&1) )
2195                 {
2196                     /* FIXME: VSAD is fast but fairly poor at choosing the best interlace type. */
2197                     h->mb.b_interlaced = x264_field_vsad( h, i_mb_x, i_mb_y );
2198                     memcpy( &h->zigzagf, MB_INTERLACED ? &h->zigzagf_interlaced : &h->zigzagf_progressive, sizeof(h->zigzagf) );
2199                     if( !MB_INTERLACED && (i_mb_y+2) == h->mb.i_mb_height )
2200                         x264_expand_border_mbpair( h, i_mb_x, i_mb_y );
2201                 }
2202             }
2203             h->mb.field[mb_xy] = MB_INTERLACED;
2204         }
2205
2206         /* load cache */
2207         if( SLICE_MBAFF )
2208             x264_macroblock_cache_load_interlaced( h, i_mb_x, i_mb_y );
2209         else
2210             x264_macroblock_cache_load_progressive( h, i_mb_x, i_mb_y );
2211
2212         x264_macroblock_analyse( h );
2213
2214         /* encode this macroblock -> be careful it can change the mb type to P_SKIP if needed */
2215 reencode:
2216         x264_macroblock_encode( h );
2217
2218         if( h->param.b_cabac )
2219         {
2220             if( mb_xy > h->sh.i_first_mb && !(SLICE_MBAFF && (i_mb_y&1)) )
2221                 x264_cabac_encode_terminal( &h->cabac );
2222
2223             if( IS_SKIP( h->mb.i_type ) )
2224                 x264_cabac_mb_skip( h, 1 );
2225             else
2226             {
2227                 if( h->sh.i_type != SLICE_TYPE_I )
2228                     x264_cabac_mb_skip( h, 0 );
2229                 x264_macroblock_write_cabac( h, &h->cabac );
2230             }
2231         }
2232         else
2233         {
2234             if( IS_SKIP( h->mb.i_type ) )
2235                 i_skip++;
2236             else
2237             {
2238                 if( h->sh.i_type != SLICE_TYPE_I )
2239                 {
2240                     bs_write_ue( &h->out.bs, i_skip );  /* skip run */
2241                     i_skip = 0;
2242                 }
2243                 x264_macroblock_write_cavlc( h );
2244                 /* If there was a CAVLC level code overflow, try again at a higher QP. */
2245                 if( h->mb.b_overflow )
2246                 {
2247                     h->mb.i_chroma_qp = h->chroma_qp_table[++h->mb.i_qp];
2248                     h->mb.i_skip_intra = 0;
2249                     h->mb.b_skip_mc = 0;
2250                     h->mb.b_overflow = 0;
2251                     x264_bitstream_restore( h, &bs_bak[0], &i_skip, 0 );
2252                     goto reencode;
2253                 }
2254             }
2255         }
2256
2257         int total_bits = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2258         int mb_size = total_bits - mb_spos;
2259
2260         if( slice_max_size && (!SLICE_MBAFF || (i_mb_y&1)) )
2261         {
2262             /* Count the skip run, just in case. */
2263             if( !h->param.b_cabac )
2264                 total_bits += bs_size_ue_big( i_skip );
2265             /* Check for escape bytes. */
2266             uint8_t *end = h->param.b_cabac ? h->cabac.p : h->out.bs.p;
2267             for( ; last_emu_check < end - 2; last_emu_check++ )
2268                 if( last_emu_check[0] == 0 && last_emu_check[1] == 0 && last_emu_check[2] <= 3 )
2269                 {
2270                     slice_max_size -= 8;
2271                     last_emu_check++;
2272                 }
2273             /* We'll just re-encode this last macroblock if we go over the max slice size. */
2274             if( total_bits - starting_bits > slice_max_size && !h->mb.b_reencode_mb )
2275             {
2276                 if( mb_xy-SLICE_MBAFF*h->mb.i_mb_stride != h->sh.i_first_mb )
2277                 {
2278                     x264_bitstream_restore( h, &bs_bak[0], &i_skip, 0 );
2279                     h->mb.b_reencode_mb = 1;
2280                     if( SLICE_MBAFF )
2281                     {
2282                         // set to bottom of previous mbpair
2283                         if( i_mb_x )
2284                             h->sh.i_last_mb = mb_xy-1+h->mb.i_mb_stride*(!(i_mb_y&1));
2285                         else
2286                             h->sh.i_last_mb = (i_mb_y-2+!(i_mb_y&1))*h->mb.i_mb_stride + h->mb.i_mb_width - 1;
2287                     }
2288                     else
2289                         h->sh.i_last_mb = mb_xy-1;
2290                     break;
2291                 }
2292                 else
2293                 {
2294                     h->sh.i_last_mb = mb_xy;
2295                     h->mb.b_reencode_mb = 0;
2296                 }
2297             }
2298             else
2299                 h->mb.b_reencode_mb = 0;
2300         }
2301
2302 #if HAVE_VISUALIZE
2303         if( h->param.b_visualize )
2304             x264_visualize_mb( h );
2305 #endif
2306
2307         /* save cache */
2308         x264_macroblock_cache_save( h );
2309
2310         /* accumulate mb stats */
2311         h->stat.frame.i_mb_count[h->mb.i_type]++;
2312
2313         int b_intra = IS_INTRA( h->mb.i_type );
2314         int b_skip = IS_SKIP( h->mb.i_type );
2315         if( h->param.i_log_level >= X264_LOG_INFO || h->param.rc.b_stat_write )
2316         {
2317             if( !b_intra && !b_skip && !IS_DIRECT( h->mb.i_type ) )
2318             {
2319                 if( h->mb.i_partition != D_8x8 )
2320                         h->stat.frame.i_mb_partition[h->mb.i_partition] += 4;
2321                     else
2322                         for( int i = 0; i < 4; i++ )
2323                             h->stat.frame.i_mb_partition[h->mb.i_sub_partition[i]] ++;
2324                 if( h->param.i_frame_reference > 1 )
2325                     for( int i_list = 0; i_list <= (h->sh.i_type == SLICE_TYPE_B); i_list++ )
2326                         for( int i = 0; i < 4; i++ )
2327                         {
2328                             int i_ref = h->mb.cache.ref[i_list][ x264_scan8[4*i] ];
2329                             if( i_ref >= 0 )
2330                                 h->stat.frame.i_mb_count_ref[i_list][i_ref] ++;
2331                         }
2332             }
2333         }
2334
2335         if( h->param.i_log_level >= X264_LOG_INFO )
2336         {
2337             if( h->mb.i_cbp_luma | h->mb.i_cbp_chroma )
2338             {
2339                 if( CHROMA444 )
2340                 {
2341                     for( int i = 0; i < 4; i++ )
2342                         if( h->mb.i_cbp_luma & (1 << i) )
2343                             for( int p = 0; p < 3; p++ )
2344                             {
2345                                 int s8 = i*4+p*16;
2346                                 int nnz8x8 = M16( &h->mb.cache.non_zero_count[x264_scan8[s8]+0] )
2347                                            | M16( &h->mb.cache.non_zero_count[x264_scan8[s8]+8] );
2348                                 h->stat.frame.i_mb_cbp[!b_intra + p*2] += !!nnz8x8;
2349                             }
2350                 }
2351                 else
2352                 {
2353                     int cbpsum = (h->mb.i_cbp_luma&1) + ((h->mb.i_cbp_luma>>1)&1)
2354                                + ((h->mb.i_cbp_luma>>2)&1) + (h->mb.i_cbp_luma>>3);
2355                     h->stat.frame.i_mb_cbp[!b_intra + 0] += cbpsum;
2356                     h->stat.frame.i_mb_cbp[!b_intra + 2] += !!h->mb.i_cbp_chroma;
2357                     h->stat.frame.i_mb_cbp[!b_intra + 4] += h->mb.i_cbp_chroma >> 1;
2358                 }
2359             }
2360             if( h->mb.i_cbp_luma && !b_intra )
2361             {
2362                 h->stat.frame.i_mb_count_8x8dct[0] ++;
2363                 h->stat.frame.i_mb_count_8x8dct[1] += h->mb.b_transform_8x8;
2364             }
2365             if( b_intra && h->mb.i_type != I_PCM )
2366             {
2367                 if( h->mb.i_type == I_16x16 )
2368                     h->stat.frame.i_mb_pred_mode[0][h->mb.i_intra16x16_pred_mode]++;
2369                 else if( h->mb.i_type == I_8x8 )
2370                     for( int i = 0; i < 16; i += 4 )
2371                         h->stat.frame.i_mb_pred_mode[1][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2372                 else //if( h->mb.i_type == I_4x4 )
2373                     for( int i = 0; i < 16; i++ )
2374                         h->stat.frame.i_mb_pred_mode[2][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2375                 h->stat.frame.i_mb_pred_mode[3][x264_mb_chroma_pred_mode_fix[h->mb.i_chroma_pred_mode]]++;
2376             }
2377             h->stat.frame.i_mb_field[b_intra?0:b_skip?2:1] += MB_INTERLACED;
2378         }
2379
2380         /* calculate deblock strength values (actual deblocking is done per-row along with hpel) */
2381         if( b_deblock )
2382             x264_macroblock_deblock_strength( h );
2383
2384         x264_ratecontrol_mb( h, mb_size );
2385
2386         if( mb_xy == h->sh.i_last_mb )
2387             break;
2388
2389         if( SLICE_MBAFF )
2390         {
2391             i_mb_x += i_mb_y & 1;
2392             i_mb_y ^= i_mb_x < h->mb.i_mb_width;
2393         }
2394         else
2395             i_mb_x++;
2396         if( i_mb_x == h->mb.i_mb_width )
2397         {
2398             i_mb_y++;
2399             i_mb_x = 0;
2400         }
2401     }
2402     h->out.nal[h->out.i_nal].i_last_mb = h->sh.i_last_mb;
2403
2404     if( h->param.b_cabac )
2405     {
2406         x264_cabac_encode_flush( h, &h->cabac );
2407         h->out.bs.p = h->cabac.p;
2408     }
2409     else
2410     {
2411         if( i_skip > 0 )
2412             bs_write_ue( &h->out.bs, i_skip );  /* last skip run */
2413         /* rbsp_slice_trailing_bits */
2414         bs_rbsp_trailing( &h->out.bs );
2415         bs_flush( &h->out.bs );
2416     }
2417     if( x264_nal_end( h ) )
2418         return -1;
2419
2420     if( h->sh.i_last_mb == (h->i_threadslice_end * h->mb.i_mb_width - 1) )
2421     {
2422         h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
2423                                   + (h->out.i_nal*NALU_OVERHEAD * 8)
2424                                   - h->stat.frame.i_tex_bits
2425                                   - h->stat.frame.i_mv_bits;
2426         x264_fdec_filter_row( h, h->i_threadslice_end, 1 );
2427     }
2428
2429     return 0;
2430 }
2431
2432 static void x264_thread_sync_context( x264_t *dst, x264_t *src )
2433 {
2434     if( dst == src )
2435         return;
2436
2437     // reference counting
2438     for( x264_frame_t **f = src->frames.reference; *f; f++ )
2439         (*f)->i_reference_count++;
2440     for( x264_frame_t **f = dst->frames.reference; *f; f++ )
2441         x264_frame_push_unused( src, *f );
2442     src->fdec->i_reference_count++;
2443     x264_frame_push_unused( src, dst->fdec );
2444
2445     // copy everything except the per-thread pointers and the constants.
2446     memcpy( &dst->i_frame, &src->i_frame, offsetof(x264_t, mb.type) - offsetof(x264_t, i_frame) );
2447     dst->param = src->param;
2448     dst->stat = src->stat;
2449     dst->pixf = src->pixf;
2450 }
2451
2452 static void x264_thread_sync_stat( x264_t *dst, x264_t *src )
2453 {
2454     if( dst == src )
2455         return;
2456     memcpy( &dst->stat.i_frame_count, &src->stat.i_frame_count, sizeof(dst->stat) - sizeof(dst->stat.frame) );
2457 }
2458
2459 static void *x264_slices_write( x264_t *h )
2460 {
2461     int i_slice_num = 0;
2462     int last_thread_mb = h->sh.i_last_mb;
2463
2464 #if HAVE_VISUALIZE
2465     if( h->param.b_visualize )
2466         if( x264_visualize_init( h ) )
2467             return (void *)-1;
2468 #endif
2469
2470     /* init stats */
2471     memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
2472     h->mb.b_reencode_mb = 0;
2473     while( h->sh.i_first_mb + SLICE_MBAFF*h->mb.i_mb_stride <= last_thread_mb )
2474     {
2475         h->sh.i_last_mb = last_thread_mb;
2476         if( h->param.i_slice_max_mbs )
2477         {
2478             if( SLICE_MBAFF )
2479             {
2480                 // convert first to mbaff form, add slice-max-mbs, then convert back to normal form
2481                 int last_mbaff = 2*(h->sh.i_first_mb % h->mb.i_mb_width)
2482                     + h->mb.i_mb_width*(h->sh.i_first_mb / h->mb.i_mb_width)
2483                     + h->param.i_slice_max_mbs - 1;
2484                 int last_x = (last_mbaff % (2*h->mb.i_mb_width))/2;
2485                 int last_y = (last_mbaff / (2*h->mb.i_mb_width))*2 + 1;
2486                 h->sh.i_last_mb = last_x + h->mb.i_mb_stride*last_y;
2487             }
2488             else
2489                 h->sh.i_last_mb = h->sh.i_first_mb + h->param.i_slice_max_mbs - 1;
2490         }
2491         else if( h->param.i_slice_count && !h->param.b_sliced_threads )
2492         {
2493             int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2494             int width = h->mb.i_mb_width << PARAM_INTERLACED;
2495             i_slice_num++;
2496             h->sh.i_last_mb = (height * i_slice_num + h->param.i_slice_count/2) / h->param.i_slice_count * width - 1;
2497         }
2498         h->sh.i_last_mb = X264_MIN( h->sh.i_last_mb, last_thread_mb );
2499         if( x264_stack_align( x264_slice_write, h ) )
2500             return (void *)-1;
2501         h->sh.i_first_mb = h->sh.i_last_mb + 1;
2502         // if i_first_mb is not the last mb in a row then go to the next mb in MBAFF order
2503         if( SLICE_MBAFF && h->sh.i_first_mb % h->mb.i_mb_width )
2504             h->sh.i_first_mb -= h->mb.i_mb_stride;
2505     }
2506
2507 #if HAVE_VISUALIZE
2508     if( h->param.b_visualize )
2509     {
2510         x264_visualize_show( h );
2511         x264_visualize_close( h );
2512     }
2513 #endif
2514
2515     return (void *)0;
2516 }
2517
2518 static int x264_threaded_slices_write( x264_t *h )
2519 {
2520     /* set first/last mb and sync contexts */
2521     for( int i = 0; i < h->param.i_threads; i++ )
2522     {
2523         x264_t *t = h->thread[i];
2524         if( i )
2525         {
2526             t->param = h->param;
2527             memcpy( &t->i_frame, &h->i_frame, offsetof(x264_t, rc) - offsetof(x264_t, i_frame) );
2528         }
2529         int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2530         t->i_threadslice_start = ((height *  i    + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2531         t->i_threadslice_end   = ((height * (i+1) + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2532         t->sh.i_first_mb = t->i_threadslice_start * h->mb.i_mb_width;
2533         t->sh.i_last_mb  =   t->i_threadslice_end * h->mb.i_mb_width - 1;
2534     }
2535
2536     x264_stack_align( x264_analyse_weight_frame, h, h->mb.i_mb_height*16 + 16 );
2537
2538     x264_threads_distribute_ratecontrol( h );
2539
2540     /* dispatch */
2541     for( int i = 0; i < h->param.i_threads; i++ )
2542     {
2543         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h->thread[i] );
2544         h->thread[i]->b_thread_active = 1;
2545     }
2546     for( int i = 0; i < h->param.i_threads; i++ )
2547     {
2548         h->thread[i]->b_thread_active = 0;
2549         if( (intptr_t)x264_threadpool_wait( h->threadpool, h->thread[i] ) )
2550             return -1;
2551     }
2552
2553     /* Go back and fix up the hpel on the borders between slices. */
2554     for( int i = 1; i < h->param.i_threads; i++ )
2555     {
2556         x264_fdec_filter_row( h->thread[i], h->thread[i]->i_threadslice_start + 1, 0 );
2557         if( SLICE_MBAFF )
2558             x264_fdec_filter_row( h->thread[i], h->thread[i]->i_threadslice_start + 2, 0 );
2559     }
2560
2561     x264_threads_merge_ratecontrol( h );
2562
2563     for( int i = 1; i < h->param.i_threads; i++ )
2564     {
2565         x264_t *t = h->thread[i];
2566         for( int j = 0; j < t->out.i_nal; j++ )
2567         {
2568             h->out.nal[h->out.i_nal] = t->out.nal[j];
2569             h->out.i_nal++;
2570             x264_nal_check_buffer( h );
2571         }
2572         /* All entries in stat.frame are ints except for ssd/ssim. */
2573         for( int j = 0; j < (offsetof(x264_t,stat.frame.i_ssd) - offsetof(x264_t,stat.frame.i_mv_bits)) / sizeof(int); j++ )
2574             ((int*)&h->stat.frame)[j] += ((int*)&t->stat.frame)[j];
2575         for( int j = 0; j < 3; j++ )
2576             h->stat.frame.i_ssd[j] += t->stat.frame.i_ssd[j];
2577         h->stat.frame.f_ssim += t->stat.frame.f_ssim;
2578         h->stat.frame.i_ssim_cnt += t->stat.frame.i_ssim_cnt;
2579     }
2580
2581     return 0;
2582 }
2583
2584 void x264_encoder_intra_refresh( x264_t *h )
2585 {
2586     h = h->thread[h->i_thread_phase];
2587     h->b_queued_intra_refresh = 1;
2588 }
2589
2590 int x264_encoder_invalidate_reference( x264_t *h, int64_t pts )
2591 {
2592     if( h->param.i_bframe )
2593     {
2594         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with B-frames enabled\n" );
2595         return -1;
2596     }
2597     if( h->param.b_intra_refresh )
2598     {
2599         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with intra refresh enabled\n" );
2600         return -1;
2601     }
2602     h = h->thread[h->i_thread_phase];
2603     if( pts >= h->i_last_idr_pts )
2604     {
2605         for( int i = 0; h->frames.reference[i]; i++ )
2606             if( pts <= h->frames.reference[i]->i_pts )
2607                 h->frames.reference[i]->b_corrupt = 1;
2608         if( pts <= h->fdec->i_pts )
2609             h->fdec->b_corrupt = 1;
2610     }
2611     return 0;
2612 }
2613
2614 /****************************************************************************
2615  * x264_encoder_encode:
2616  *  XXX: i_poc   : is the poc of the current given picture
2617  *       i_frame : is the number of the frame being coded
2618  *  ex:  type frame poc
2619  *       I      0   2*0
2620  *       P      1   2*3
2621  *       B      2   2*1
2622  *       B      3   2*2
2623  *       P      4   2*6
2624  *       B      5   2*4
2625  *       B      6   2*5
2626  ****************************************************************************/
2627 int     x264_encoder_encode( x264_t *h,
2628                              x264_nal_t **pp_nal, int *pi_nal,
2629                              x264_picture_t *pic_in,
2630                              x264_picture_t *pic_out )
2631 {
2632     x264_t *thread_current, *thread_prev, *thread_oldest;
2633     int i_nal_type, i_nal_ref_idc, i_global_qp;
2634     int overhead = NALU_OVERHEAD;
2635
2636     if( h->i_thread_frames > 1 )
2637     {
2638         thread_prev    = h->thread[ h->i_thread_phase ];
2639         h->i_thread_phase = (h->i_thread_phase + 1) % h->i_thread_frames;
2640         thread_current = h->thread[ h->i_thread_phase ];
2641         thread_oldest  = h->thread[ (h->i_thread_phase + 1) % h->i_thread_frames ];
2642         x264_thread_sync_context( thread_current, thread_prev );
2643         x264_thread_sync_ratecontrol( thread_current, thread_prev, thread_oldest );
2644         h = thread_current;
2645     }
2646     else
2647     {
2648         thread_current =
2649         thread_oldest  = h;
2650     }
2651 #if HAVE_MMX
2652     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
2653         x264_cpu_mask_misalign_sse();
2654 #endif
2655
2656     // ok to call this before encoding any frames, since the initial values of fdec have b_kept_as_ref=0
2657     if( x264_reference_update( h ) )
2658         return -1;
2659     h->fdec->i_lines_completed = -1;
2660
2661     /* no data out */
2662     *pi_nal = 0;
2663     *pp_nal = NULL;
2664
2665     /* ------------------- Setup new frame from picture -------------------- */
2666     if( pic_in != NULL )
2667     {
2668         /* 1: Copy the picture to a frame and move it to a buffer */
2669         x264_frame_t *fenc = x264_frame_pop_unused( h, 0 );
2670         if( !fenc )
2671             return -1;
2672
2673         if( x264_frame_copy_picture( h, fenc, pic_in ) < 0 )
2674             return -1;
2675
2676         if( h->param.i_width != 16 * h->mb.i_mb_width ||
2677             h->param.i_height != 16 * h->mb.i_mb_height )
2678             x264_frame_expand_border_mod16( h, fenc );
2679
2680         fenc->i_frame = h->frames.i_input++;
2681
2682         if( fenc->i_frame == 0 )
2683             h->frames.i_first_pts = fenc->i_pts;
2684         if( h->frames.i_bframe_delay && fenc->i_frame == h->frames.i_bframe_delay )
2685             h->frames.i_bframe_delay_time = fenc->i_pts - h->frames.i_first_pts;
2686
2687         if( h->param.b_vfr_input && fenc->i_pts <= h->frames.i_largest_pts )
2688             x264_log( h, X264_LOG_WARNING, "non-strictly-monotonic PTS\n" );
2689
2690         h->frames.i_second_largest_pts = h->frames.i_largest_pts;
2691         h->frames.i_largest_pts = fenc->i_pts;
2692
2693         if( (fenc->i_pic_struct < PIC_STRUCT_AUTO) || (fenc->i_pic_struct > PIC_STRUCT_TRIPLE) )
2694             fenc->i_pic_struct = PIC_STRUCT_AUTO;
2695
2696         if( fenc->i_pic_struct == PIC_STRUCT_AUTO )
2697         {
2698 #if HAVE_INTERLACED
2699             int b_interlaced = fenc->param ? fenc->param->b_interlaced : h->param.b_interlaced;
2700 #else
2701             int b_interlaced = 0;
2702 #endif
2703             if( b_interlaced )
2704             {
2705                 int b_tff = fenc->param ? fenc->param->b_tff : h->param.b_tff;
2706                 fenc->i_pic_struct = b_tff ? PIC_STRUCT_TOP_BOTTOM : PIC_STRUCT_BOTTOM_TOP;
2707             }
2708             else
2709                 fenc->i_pic_struct = PIC_STRUCT_PROGRESSIVE;
2710         }
2711
2712         if( h->param.rc.b_mb_tree && h->param.rc.b_stat_read )
2713         {
2714             if( x264_macroblock_tree_read( h, fenc, pic_in->prop.quant_offsets ) )
2715                 return -1;
2716         }
2717         else
2718             x264_stack_align( x264_adaptive_quant_frame, h, fenc, pic_in->prop.quant_offsets );
2719
2720         if( pic_in->prop.quant_offsets_free )
2721             pic_in->prop.quant_offsets_free( pic_in->prop.quant_offsets );
2722
2723         if( h->frames.b_have_lowres )
2724             x264_frame_init_lowres( h, fenc );
2725
2726         /* 2: Place the frame into the queue for its slice type decision */
2727         x264_lookahead_put_frame( h, fenc );
2728
2729         if( h->frames.i_input <= h->frames.i_delay + 1 - h->i_thread_frames )
2730         {
2731             /* Nothing yet to encode, waiting for filling of buffers */
2732             pic_out->i_type = X264_TYPE_AUTO;
2733             return 0;
2734         }
2735     }
2736     else
2737     {
2738         /* signal kills for lookahead thread */
2739         x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
2740         h->lookahead->b_exit_thread = 1;
2741         x264_pthread_cond_broadcast( &h->lookahead->ifbuf.cv_fill );
2742         x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
2743     }
2744
2745     h->i_frame++;
2746     /* 3: The picture is analyzed in the lookahead */
2747     if( !h->frames.current[0] )
2748         x264_lookahead_get_frames( h );
2749
2750     if( !h->frames.current[0] && x264_lookahead_is_empty( h ) )
2751         return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
2752
2753     /* ------------------- Get frame to be encoded ------------------------- */
2754     /* 4: get picture to encode */
2755     h->fenc = x264_frame_shift( h->frames.current );
2756     if( h->i_frame == h->i_thread_frames - 1 )
2757         h->i_reordered_pts_delay = h->fenc->i_reordered_pts;
2758     if( h->fenc->param )
2759     {
2760         x264_encoder_reconfig( h, h->fenc->param );
2761         if( h->fenc->param->param_free )
2762             h->fenc->param->param_free( h->fenc->param );
2763     }
2764
2765     if( !IS_X264_TYPE_I( h->fenc->i_type ) )
2766     {
2767         int valid_refs_left = 0;
2768         for( int i = 0; h->frames.reference[i]; i++ )
2769             if( !h->frames.reference[i]->b_corrupt )
2770                 valid_refs_left++;
2771         /* No valid reference frames left: force an IDR. */
2772         if( !valid_refs_left )
2773         {
2774             h->fenc->b_keyframe = 1;
2775             h->fenc->i_type = X264_TYPE_IDR;
2776         }
2777     }
2778
2779     if( h->fenc->b_keyframe )
2780     {
2781         h->frames.i_last_keyframe = h->fenc->i_frame;
2782         if( h->fenc->i_type == X264_TYPE_IDR )
2783         {
2784             h->i_frame_num = 0;
2785             h->frames.i_last_idr = h->fenc->i_frame;
2786         }
2787     }
2788     h->sh.i_mmco_command_count =
2789     h->sh.i_mmco_remove_from_end = 0;
2790     h->b_ref_reorder[0] =
2791     h->b_ref_reorder[1] = 0;
2792     h->fdec->i_poc =
2793     h->fenc->i_poc = 2 * ( h->fenc->i_frame - X264_MAX( h->frames.i_last_idr, 0 ) );
2794
2795     /* ------------------- Setup frame context ----------------------------- */
2796     /* 5: Init data dependent of frame type */
2797     if( h->fenc->i_type == X264_TYPE_IDR )
2798     {
2799         /* reset ref pictures */
2800         i_nal_type    = NAL_SLICE_IDR;
2801         i_nal_ref_idc = NAL_PRIORITY_HIGHEST;
2802         h->sh.i_type = SLICE_TYPE_I;
2803         x264_reference_reset( h );
2804         h->frames.i_poc_last_open_gop = -1;
2805     }
2806     else if( h->fenc->i_type == X264_TYPE_I )
2807     {
2808         i_nal_type    = NAL_SLICE;
2809         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2810         h->sh.i_type = SLICE_TYPE_I;
2811         x264_reference_hierarchy_reset( h );
2812         if( h->param.b_open_gop )
2813             h->frames.i_poc_last_open_gop = h->fenc->b_keyframe ? h->fenc->i_poc : -1;
2814     }
2815     else if( h->fenc->i_type == X264_TYPE_P )
2816     {
2817         i_nal_type    = NAL_SLICE;
2818         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2819         h->sh.i_type = SLICE_TYPE_P;
2820         x264_reference_hierarchy_reset( h );
2821         h->frames.i_poc_last_open_gop = -1;
2822     }
2823     else if( h->fenc->i_type == X264_TYPE_BREF )
2824     {
2825         i_nal_type    = NAL_SLICE;
2826         i_nal_ref_idc = h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT ? NAL_PRIORITY_LOW : NAL_PRIORITY_HIGH;
2827         h->sh.i_type = SLICE_TYPE_B;
2828         x264_reference_hierarchy_reset( h );
2829     }
2830     else    /* B frame */
2831     {
2832         i_nal_type    = NAL_SLICE;
2833         i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
2834         h->sh.i_type = SLICE_TYPE_B;
2835     }
2836
2837     h->fdec->i_type = h->fenc->i_type;
2838     h->fdec->i_frame = h->fenc->i_frame;
2839     h->fenc->b_kept_as_ref =
2840     h->fdec->b_kept_as_ref = i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE && h->param.i_keyint_max > 1;
2841
2842     h->fdec->i_pts = h->fenc->i_pts;
2843     if( h->frames.i_bframe_delay )
2844     {
2845         int64_t *prev_reordered_pts = thread_current->frames.i_prev_reordered_pts;
2846         h->fdec->i_dts = h->i_frame > h->frames.i_bframe_delay
2847                        ? prev_reordered_pts[ (h->i_frame - h->frames.i_bframe_delay) % h->frames.i_bframe_delay ]
2848                        : h->fenc->i_reordered_pts - h->frames.i_bframe_delay_time;
2849         prev_reordered_pts[ h->i_frame % h->frames.i_bframe_delay ] = h->fenc->i_reordered_pts;
2850     }
2851     else
2852         h->fdec->i_dts = h->fenc->i_reordered_pts;
2853     if( h->fenc->i_type == X264_TYPE_IDR )
2854         h->i_last_idr_pts = h->fdec->i_pts;
2855
2856     /* ------------------- Init                ----------------------------- */
2857     /* build ref list 0/1 */
2858     x264_reference_build_list( h, h->fdec->i_poc );
2859
2860     /* ---------------------- Write the bitstream -------------------------- */
2861     /* Init bitstream context */
2862     if( h->param.b_sliced_threads )
2863     {
2864         for( int i = 0; i < h->param.i_threads; i++ )
2865         {
2866             bs_init( &h->thread[i]->out.bs, h->thread[i]->out.p_bitstream, h->thread[i]->out.i_bitstream );
2867             h->thread[i]->out.i_nal = 0;
2868         }
2869     }
2870     else
2871     {
2872         bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
2873         h->out.i_nal = 0;
2874     }
2875
2876     if( h->param.b_aud )
2877     {
2878         int pic_type;
2879
2880         if( h->sh.i_type == SLICE_TYPE_I )
2881             pic_type = 0;
2882         else if( h->sh.i_type == SLICE_TYPE_P )
2883             pic_type = 1;
2884         else if( h->sh.i_type == SLICE_TYPE_B )
2885             pic_type = 2;
2886         else
2887             pic_type = 7;
2888
2889         x264_nal_start( h, NAL_AUD, NAL_PRIORITY_DISPOSABLE );
2890         bs_write( &h->out.bs, 3, pic_type );
2891         bs_rbsp_trailing( &h->out.bs );
2892         if( x264_nal_end( h ) )
2893             return -1;
2894         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2895     }
2896
2897     h->i_nal_type = i_nal_type;
2898     h->i_nal_ref_idc = i_nal_ref_idc;
2899
2900     if( h->param.b_intra_refresh )
2901     {
2902         if( IS_X264_TYPE_I( h->fenc->i_type ) )
2903         {
2904             h->fdec->i_frames_since_pir = 0;
2905             h->b_queued_intra_refresh = 0;
2906             /* PIR is currently only supported with ref == 1, so any intra frame effectively refreshes
2907              * the whole frame and counts as an intra refresh. */
2908             h->fdec->f_pir_position = h->mb.i_mb_width;
2909         }
2910         else if( h->fenc->i_type == X264_TYPE_P )
2911         {
2912             int pocdiff = (h->fdec->i_poc - h->fref[0][0]->i_poc)/2;
2913             float increment = X264_MAX( ((float)h->mb.i_mb_width-1) / h->param.i_keyint_max, 1 );
2914             h->fdec->f_pir_position = h->fref[0][0]->f_pir_position;
2915             h->fdec->i_frames_since_pir = h->fref[0][0]->i_frames_since_pir + pocdiff;
2916             if( h->fdec->i_frames_since_pir >= h->param.i_keyint_max ||
2917                 (h->b_queued_intra_refresh && h->fdec->f_pir_position + 0.5 >= h->mb.i_mb_width) )
2918             {
2919                 h->fdec->f_pir_position = 0;
2920                 h->fdec->i_frames_since_pir = 0;
2921                 h->b_queued_intra_refresh = 0;
2922                 h->fenc->b_keyframe = 1;
2923             }
2924             h->fdec->i_pir_start_col = h->fdec->f_pir_position+0.5;
2925             h->fdec->f_pir_position += increment * pocdiff;
2926             h->fdec->i_pir_end_col = h->fdec->f_pir_position+0.5;
2927             /* If our intra refresh has reached the right side of the frame, we're done. */
2928             if( h->fdec->i_pir_end_col >= h->mb.i_mb_width - 1 )
2929             {
2930                 h->fdec->f_pir_position = h->mb.i_mb_width;
2931                 h->fdec->i_pir_end_col = h->mb.i_mb_width - 1;
2932             }
2933         }
2934     }
2935
2936     if( h->fenc->b_keyframe )
2937     {
2938         /* Write SPS and PPS */
2939         if( h->param.b_repeat_headers )
2940         {
2941             /* generate sequence parameters */
2942             x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
2943             x264_sps_write( &h->out.bs, h->sps );
2944             if( x264_nal_end( h ) )
2945                 return -1;
2946             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2947
2948             /* generate picture parameters */
2949             x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
2950             x264_pps_write( &h->out.bs, h->sps, h->pps );
2951             if( x264_nal_end( h ) )
2952                 return -1;
2953             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2954         }
2955
2956         /* when frame threading is used, buffering period sei is written in x264_encoder_frame_end */
2957         if( h->i_thread_frames == 1 && h->sps->vui.b_nal_hrd_parameters_present )
2958         {
2959             x264_hrd_fullness( h );
2960             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2961             x264_sei_buffering_period_write( h, &h->out.bs );
2962             if( x264_nal_end( h ) )
2963                return -1;
2964             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2965         }
2966     }
2967
2968     /* write extra sei */
2969     for( int i = 0; i < h->fenc->extra_sei.num_payloads; i++ )
2970     {
2971         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2972         x264_sei_write( &h->out.bs, h->fenc->extra_sei.payloads[i].payload, h->fenc->extra_sei.payloads[i].payload_size,
2973                         h->fenc->extra_sei.payloads[i].payload_type );
2974         if( x264_nal_end( h ) )
2975             return -1;
2976         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2977         if( h->fenc->extra_sei.sei_free && h->fenc->extra_sei.payloads[i].payload )
2978             h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads[i].payload );
2979     }
2980
2981     if( h->fenc->extra_sei.sei_free && h->fenc->extra_sei.payloads )
2982         h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads );
2983
2984     if( h->fenc->b_keyframe )
2985     {
2986         if( h->param.b_repeat_headers && h->fenc->i_frame == 0 )
2987         {
2988             /* identify ourself */
2989             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2990             if( x264_sei_version_write( h, &h->out.bs ) )
2991                 return -1;
2992             if( x264_nal_end( h ) )
2993                 return -1;
2994             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2995         }
2996
2997         if( h->fenc->i_type != X264_TYPE_IDR )
2998         {
2999             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;
3000             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3001             x264_sei_recovery_point_write( h, &h->out.bs, time_to_recovery );
3002             if( x264_nal_end( h ) )
3003                 return -1;
3004             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3005         }
3006
3007         if ( h->param.i_frame_packing >= 0 )
3008         {
3009             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3010             x264_sei_frame_packing_write( h, &h->out.bs );
3011             if( x264_nal_end( h ) )
3012                 return -1;
3013             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3014         }
3015     }
3016
3017     /* generate sei pic timing */
3018     if( h->sps->vui.b_pic_struct_present || h->sps->vui.b_nal_hrd_parameters_present )
3019     {
3020         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3021         x264_sei_pic_timing_write( h, &h->out.bs );
3022         if( x264_nal_end( h ) )
3023             return -1;
3024         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3025     }
3026
3027     /* As required by Blu-ray. */
3028     if( !IS_X264_TYPE_B( h->fenc->i_type ) && h->b_sh_backup )
3029     {
3030         h->b_sh_backup = 0;
3031         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3032         x264_sei_dec_ref_pic_marking_write( h, &h->out.bs );
3033         if( x264_nal_end( h ) )
3034             return -1;
3035         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
3036     }
3037
3038     if( h->fenc->b_keyframe && h->param.b_intra_refresh )
3039         h->i_cpb_delay_pir_offset = h->fenc->i_cpb_delay;
3040
3041     /* Init the rate control */
3042     /* FIXME: Include slice header bit cost. */
3043     x264_ratecontrol_start( h, h->fenc->i_qpplus1, overhead*8 );
3044     i_global_qp = x264_ratecontrol_qp( h );
3045
3046     pic_out->i_qpplus1 =
3047     h->fdec->i_qpplus1 = i_global_qp + 1;
3048
3049     if( h->param.rc.b_stat_read && h->sh.i_type != SLICE_TYPE_I )
3050     {
3051         x264_reference_build_list_optimal( h );
3052         x264_reference_check_reorder( h );
3053     }
3054
3055     if( h->i_ref[0] )
3056         h->fdec->i_poc_l0ref0 = h->fref[0][0]->i_poc;
3057
3058     /* ------------------------ Create slice header  ----------------------- */
3059     x264_slice_init( h, i_nal_type, i_global_qp );
3060
3061     /*------------------------- Weights -------------------------------------*/
3062     if( h->sh.i_type == SLICE_TYPE_B )
3063         x264_macroblock_bipred_init( h );
3064
3065     x264_weighted_pred_init( h );
3066
3067     if( i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE )
3068         h->i_frame_num++;
3069
3070     /* Write frame */
3071     h->i_threadslice_start = 0;
3072     h->i_threadslice_end = h->mb.i_mb_height;
3073     if( h->i_thread_frames > 1 )
3074     {
3075         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h );
3076         h->b_thread_active = 1;
3077     }
3078     else if( h->param.b_sliced_threads )
3079     {
3080         if( x264_threaded_slices_write( h ) )
3081             return -1;
3082     }
3083     else
3084         if( (intptr_t)x264_slices_write( h ) )
3085             return -1;
3086
3087     return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
3088 }
3089
3090 static int x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
3091                                    x264_nal_t **pp_nal, int *pi_nal,
3092                                    x264_picture_t *pic_out )
3093 {
3094     char psz_message[80];
3095
3096     if( h->b_thread_active )
3097     {
3098         h->b_thread_active = 0;
3099         if( (intptr_t)x264_threadpool_wait( h->threadpool, h ) )
3100             return -1;
3101     }
3102     if( !h->out.i_nal )
3103     {
3104         pic_out->i_type = X264_TYPE_AUTO;
3105         return 0;
3106     }
3107
3108     x264_emms();
3109     /* generate buffering period sei and insert it into place */
3110     if( h->i_thread_frames > 1 && h->fenc->b_keyframe && h->sps->vui.b_nal_hrd_parameters_present )
3111     {
3112         x264_hrd_fullness( h );
3113         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
3114         x264_sei_buffering_period_write( h, &h->out.bs );
3115         if( x264_nal_end( h ) )
3116            return -1;
3117         /* buffering period sei must follow AUD, SPS and PPS and precede all other SEIs */
3118         int idx = 0;
3119         while( h->out.nal[idx].i_type == NAL_AUD ||
3120                h->out.nal[idx].i_type == NAL_SPS ||
3121                h->out.nal[idx].i_type == NAL_PPS )
3122             idx++;
3123         x264_nal_t nal_tmp = h->out.nal[h->out.i_nal-1];
3124         memmove( &h->out.nal[idx+1], &h->out.nal[idx], (h->out.i_nal-idx-1)*sizeof(x264_nal_t) );
3125         h->out.nal[idx] = nal_tmp;
3126     }
3127
3128     int frame_size = x264_encoder_encapsulate_nals( h, 0 );
3129     if( frame_size < 0 )
3130         return -1;
3131
3132     /* Set output picture properties */
3133     pic_out->i_type = h->fenc->i_type;
3134
3135     pic_out->b_keyframe = h->fenc->b_keyframe;
3136     pic_out->i_pic_struct = h->fenc->i_pic_struct;
3137
3138     pic_out->i_pts = h->fdec->i_pts;
3139     pic_out->i_dts = h->fdec->i_dts;
3140
3141     if( pic_out->i_pts < pic_out->i_dts )
3142         x264_log( h, X264_LOG_WARNING, "invalid DTS: PTS is less than DTS\n" );
3143
3144     pic_out->opaque = h->fenc->opaque;
3145
3146     pic_out->img.i_csp = h->fdec->i_csp;
3147 #if HIGH_BIT_DEPTH
3148     pic_out->img.i_csp |= X264_CSP_HIGH_DEPTH;
3149 #endif
3150     pic_out->img.i_plane = h->fdec->i_plane;
3151     for( int i = 0; i < pic_out->img.i_plane; i++ )
3152     {
3153         pic_out->img.i_stride[i] = h->fdec->i_stride[i] * sizeof(pixel);
3154         pic_out->img.plane[i] = (uint8_t*)h->fdec->plane[i];
3155     }
3156
3157     x264_frame_push_unused( thread_current, h->fenc );
3158
3159     /* ---------------------- Update encoder state ------------------------- */
3160
3161     /* update rc */
3162     int filler = 0;
3163     if( x264_ratecontrol_end( h, frame_size * 8, &filler ) < 0 )
3164         return -1;
3165
3166     pic_out->hrd_timing = h->fenc->hrd_timing;
3167
3168     while( filler > 0 )
3169     {
3170         int f, overhead;
3171         overhead = (FILLER_OVERHEAD - h->param.b_annexb);
3172         if( h->param.i_slice_max_size && filler > h->param.i_slice_max_size )
3173         {
3174             int next_size = filler - h->param.i_slice_max_size;
3175             int overflow = X264_MAX( overhead - next_size, 0 );
3176             f = h->param.i_slice_max_size - overhead - overflow;
3177         }
3178         else
3179             f = X264_MAX( 0, filler - overhead );
3180
3181         x264_nal_start( h, NAL_FILLER, NAL_PRIORITY_DISPOSABLE );
3182         x264_filler_write( h, &h->out.bs, f );
3183         if( x264_nal_end( h ) )
3184             return -1;
3185         int total_size = x264_encoder_encapsulate_nals( h, h->out.i_nal-1 );
3186         if( total_size < 0 )
3187             return -1;
3188         frame_size += total_size;
3189         filler -= total_size;
3190     }
3191
3192     /* End bitstream, set output  */
3193     *pi_nal = h->out.i_nal;
3194     *pp_nal = h->out.nal;
3195
3196     h->out.i_nal = 0;
3197
3198     x264_noise_reduction_update( h );
3199
3200     /* ---------------------- Compute/Print statistics --------------------- */
3201     x264_thread_sync_stat( h, h->thread[0] );
3202
3203     /* Slice stat */
3204     h->stat.i_frame_count[h->sh.i_type]++;
3205     h->stat.i_frame_size[h->sh.i_type] += frame_size;
3206     h->stat.f_frame_qp[h->sh.i_type] += h->fdec->f_qp_avg_aq;
3207
3208     for( int i = 0; i < X264_MBTYPE_MAX; i++ )
3209         h->stat.i_mb_count[h->sh.i_type][i] += h->stat.frame.i_mb_count[i];
3210     for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3211         h->stat.i_mb_partition[h->sh.i_type][i] += h->stat.frame.i_mb_partition[i];
3212     for( int i = 0; i < 2; i++ )
3213         h->stat.i_mb_count_8x8dct[i] += h->stat.frame.i_mb_count_8x8dct[i];
3214     for( int i = 0; i < 6; i++ )
3215         h->stat.i_mb_cbp[i] += h->stat.frame.i_mb_cbp[i];
3216     for( int i = 0; i < 4; i++ )
3217         for( int j = 0; j < 13; j++ )
3218             h->stat.i_mb_pred_mode[i][j] += h->stat.frame.i_mb_pred_mode[i][j];
3219     if( h->sh.i_type != SLICE_TYPE_I )
3220         for( int i_list = 0; i_list < 2; i_list++ )
3221             for( int i = 0; i < X264_REF_MAX*2; i++ )
3222                 h->stat.i_mb_count_ref[h->sh.i_type][i_list][i] += h->stat.frame.i_mb_count_ref[i_list][i];
3223     for( int i = 0; i < 3; i++ )
3224         h->stat.i_mb_field[i] += h->stat.frame.i_mb_field[i];
3225     if( h->sh.i_type == SLICE_TYPE_P && h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE )
3226     {
3227         h->stat.i_wpred[0] += !!h->sh.weight[0][0].weightfn;
3228         h->stat.i_wpred[1] += !!h->sh.weight[0][1].weightfn || !!h->sh.weight[0][2].weightfn;
3229     }
3230     if( h->sh.i_type == SLICE_TYPE_B )
3231     {
3232         h->stat.i_direct_frames[ h->sh.b_direct_spatial_mv_pred ] ++;
3233         if( h->mb.b_direct_auto_write )
3234         {
3235             //FIXME somewhat arbitrary time constants
3236             if( h->stat.i_direct_score[0] + h->stat.i_direct_score[1] > h->mb.i_mb_count )
3237                 for( int i = 0; i < 2; i++ )
3238                     h->stat.i_direct_score[i] = h->stat.i_direct_score[i] * 9/10;
3239             for( int i = 0; i < 2; i++ )
3240                 h->stat.i_direct_score[i] += h->stat.frame.i_direct_score[i];
3241         }
3242     }
3243     else
3244         h->stat.i_consecutive_bframes[h->fenc->i_bframes]++;
3245
3246     psz_message[0] = '\0';
3247     double dur = h->fenc->f_duration;
3248     h->stat.f_frame_duration[h->sh.i_type] += dur;
3249     if( h->param.analyse.b_psnr )
3250     {
3251         int64_t ssd[3] =
3252         {
3253             h->stat.frame.i_ssd[0],
3254             h->stat.frame.i_ssd[1],
3255             h->stat.frame.i_ssd[2],
3256         };
3257         int luma_size = h->param.i_width * h->param.i_height;
3258         int chroma_size = CHROMA_SIZE( luma_size );
3259         pic_out->prop.f_psnr[0] = x264_psnr( ssd[0], luma_size );
3260         pic_out->prop.f_psnr[1] = x264_psnr( ssd[1], chroma_size );
3261         pic_out->prop.f_psnr[2] = x264_psnr( ssd[2], chroma_size );
3262         pic_out->prop.f_psnr_avg = x264_psnr( ssd[0] + ssd[1] + ssd[2], luma_size + chroma_size*2 );
3263
3264         h->stat.f_ssd_global[h->sh.i_type]   += dur * (ssd[0] + ssd[1] + ssd[2]);
3265         h->stat.f_psnr_average[h->sh.i_type] += dur * pic_out->prop.f_psnr_avg;
3266         h->stat.f_psnr_mean_y[h->sh.i_type]  += dur * pic_out->prop.f_psnr[0];
3267         h->stat.f_psnr_mean_u[h->sh.i_type]  += dur * pic_out->prop.f_psnr[1];
3268         h->stat.f_psnr_mean_v[h->sh.i_type]  += dur * pic_out->prop.f_psnr[2];
3269
3270         snprintf( psz_message, 80, " PSNR Y:%5.2f U:%5.2f V:%5.2f", pic_out->prop.f_psnr[0],
3271                                                                     pic_out->prop.f_psnr[1],
3272                                                                     pic_out->prop.f_psnr[2] );
3273     }
3274
3275     if( h->param.analyse.b_ssim )
3276     {
3277         pic_out->prop.f_ssim = h->stat.frame.f_ssim / h->stat.frame.i_ssim_cnt;
3278         h->stat.f_ssim_mean_y[h->sh.i_type] += pic_out->prop.f_ssim * dur;
3279         snprintf( psz_message + strlen(psz_message), 80 - strlen(psz_message),
3280                   " SSIM Y:%.5f", pic_out->prop.f_ssim );
3281     }
3282     psz_message[79] = '\0';
3283
3284     x264_log( h, X264_LOG_DEBUG,
3285                   "frame=%4d QP=%.2f NAL=%d Slice:%c Poc:%-3d I:%-4d P:%-4d SKIP:%-4d size=%d bytes%s\n",
3286               h->i_frame,
3287               h->fdec->f_qp_avg_aq,
3288               h->i_nal_ref_idc,
3289               h->sh.i_type == SLICE_TYPE_I ? 'I' : (h->sh.i_type == SLICE_TYPE_P ? 'P' : 'B' ),
3290               h->fdec->i_poc,
3291               h->stat.frame.i_mb_count_i,
3292               h->stat.frame.i_mb_count_p,
3293               h->stat.frame.i_mb_count_skip,
3294               frame_size,
3295               psz_message );
3296
3297     // keep stats all in one place
3298     x264_thread_sync_stat( h->thread[0], h );
3299     // for the use of the next frame
3300     x264_thread_sync_stat( thread_current, h );
3301
3302 #ifdef DEBUG_MB_TYPE
3303 {
3304     static const char mb_chars[] = { 'i', 'i', 'I', 'C', 'P', '8', 'S',
3305         'D', '<', 'X', 'B', 'X', '>', 'B', 'B', 'B', 'B', '8', 'S' };
3306     for( int mb_xy = 0; mb_xy < h->mb.i_mb_width * h->mb.i_mb_height; mb_xy++ )
3307     {
3308         if( h->mb.type[mb_xy] < X264_MBTYPE_MAX && h->mb.type[mb_xy] >= 0 )
3309             fprintf( stderr, "%c ", mb_chars[ h->mb.type[mb_xy] ] );
3310         else
3311             fprintf( stderr, "? " );
3312
3313         if( (mb_xy+1) % h->mb.i_mb_width == 0 )
3314             fprintf( stderr, "\n" );
3315     }
3316 }
3317 #endif
3318
3319     /* Remove duplicates, must be done near the end as breaks h->fref0 array
3320      * by freeing some of its pointers. */
3321     for( int i = 0; i < h->i_ref[0]; i++ )
3322         if( h->fref[0][i] && h->fref[0][i]->b_duplicate )
3323         {
3324             x264_frame_push_blank_unused( h, h->fref[0][i] );
3325             h->fref[0][i] = 0;
3326         }
3327
3328     if( h->param.psz_dump_yuv )
3329         x264_frame_dump( h );
3330     x264_emms();
3331
3332     return frame_size;
3333 }
3334
3335 static void x264_print_intra( int64_t *i_mb_count, double i_count, int b_print_pcm, char *intra )
3336 {
3337     intra += sprintf( intra, "I16..4%s: %4.1f%% %4.1f%% %4.1f%%",
3338         b_print_pcm ? "..PCM" : "",
3339         i_mb_count[I_16x16]/ i_count,
3340         i_mb_count[I_8x8]  / i_count,
3341         i_mb_count[I_4x4]  / i_count );
3342     if( b_print_pcm )
3343         sprintf( intra, " %4.1f%%", i_mb_count[I_PCM]  / i_count );
3344 }
3345
3346 /****************************************************************************
3347  * x264_encoder_close:
3348  ****************************************************************************/
3349 void    x264_encoder_close  ( x264_t *h )
3350 {
3351     int64_t i_yuv_size = FRAME_SIZE( h->param.i_width * h->param.i_height );
3352     int64_t i_mb_count_size[2][7] = {{0}};
3353     char buf[200];
3354     int b_print_pcm = h->stat.i_mb_count[SLICE_TYPE_I][I_PCM]
3355                    || h->stat.i_mb_count[SLICE_TYPE_P][I_PCM]
3356                    || h->stat.i_mb_count[SLICE_TYPE_B][I_PCM];
3357
3358     x264_lookahead_delete( h );
3359
3360     if( h->param.i_threads > 1 )
3361         x264_threadpool_delete( h->threadpool );
3362     if( h->i_thread_frames > 1 )
3363     {
3364         for( int i = 0; i < h->i_thread_frames; i++ )
3365             if( h->thread[i]->b_thread_active )
3366             {
3367                 assert( h->thread[i]->fenc->i_reference_count == 1 );
3368                 x264_frame_delete( h->thread[i]->fenc );
3369             }
3370
3371         x264_t *thread_prev = h->thread[h->i_thread_phase];
3372         x264_thread_sync_ratecontrol( h, thread_prev, h );
3373         x264_thread_sync_ratecontrol( thread_prev, thread_prev, h );
3374         h->i_frame = thread_prev->i_frame + 1 - h->i_thread_frames;
3375     }
3376     h->i_frame++;
3377
3378     /* Slices used and PSNR */
3379     for( int i = 0; i < 3; i++ )
3380     {
3381         static const uint8_t slice_order[] = { SLICE_TYPE_I, SLICE_TYPE_P, SLICE_TYPE_B };
3382         int i_slice = slice_order[i];
3383
3384         if( h->stat.i_frame_count[i_slice] > 0 )
3385         {
3386             int i_count = h->stat.i_frame_count[i_slice];
3387             double dur =  h->stat.f_frame_duration[i_slice];
3388             if( h->param.analyse.b_psnr )
3389             {
3390                 x264_log( h, X264_LOG_INFO,
3391                           "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",
3392                           slice_type_to_char[i_slice],
3393                           i_count,
3394                           h->stat.f_frame_qp[i_slice] / i_count,
3395                           (double)h->stat.i_frame_size[i_slice] / i_count,
3396                           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,
3397                           h->stat.f_psnr_average[i_slice] / dur,
3398                           x264_psnr( h->stat.f_ssd_global[i_slice], dur * i_yuv_size ) );
3399             }
3400             else
3401             {
3402                 x264_log( h, X264_LOG_INFO,
3403                           "frame %c:%-5d Avg QP:%5.2f  size:%6.0f\n",
3404                           slice_type_to_char[i_slice],
3405                           i_count,
3406                           h->stat.f_frame_qp[i_slice] / i_count,
3407                           (double)h->stat.i_frame_size[i_slice] / i_count );
3408             }
3409         }
3410     }
3411     if( h->param.i_bframe && h->stat.i_frame_count[SLICE_TYPE_B] )
3412     {
3413         char *p = buf;
3414         int den = 0;
3415         // weight by number of frames (including the I/P-frames) that are in a sequence of N B-frames
3416         for( int i = 0; i <= h->param.i_bframe; i++ )
3417             den += (i+1) * h->stat.i_consecutive_bframes[i];
3418         for( int i = 0; i <= h->param.i_bframe; i++ )
3419             p += sprintf( p, " %4.1f%%", 100. * (i+1) * h->stat.i_consecutive_bframes[i] / den );
3420         x264_log( h, X264_LOG_INFO, "consecutive B-frames:%s\n", buf );
3421     }
3422
3423     for( int i_type = 0; i_type < 2; i_type++ )
3424         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3425         {
3426             if( i == D_DIRECT_8x8 ) continue; /* direct is counted as its own type */
3427             i_mb_count_size[i_type][x264_mb_partition_pixel_table[i]] += h->stat.i_mb_partition[i_type][i];
3428         }
3429
3430     /* MB types used */
3431     if( h->stat.i_frame_count[SLICE_TYPE_I] > 0 )
3432     {
3433         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_I];
3434         double i_count = h->stat.i_frame_count[SLICE_TYPE_I] * h->mb.i_mb_count / 100.0;
3435         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3436         x264_log( h, X264_LOG_INFO, "mb I  %s\n", buf );
3437     }
3438     if( h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3439     {
3440         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_P];
3441         double i_count = h->stat.i_frame_count[SLICE_TYPE_P] * h->mb.i_mb_count / 100.0;
3442         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_P];
3443         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3444         x264_log( h, X264_LOG_INFO,
3445                   "mb P  %s  P16..4: %4.1f%% %4.1f%% %4.1f%% %4.1f%% %4.1f%%    skip:%4.1f%%\n",
3446                   buf,
3447                   i_mb_size[PIXEL_16x16] / (i_count*4),
3448                   (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3449                   i_mb_size[PIXEL_8x8] / (i_count*4),
3450                   (i_mb_size[PIXEL_8x4] + i_mb_size[PIXEL_4x8]) / (i_count*4),
3451                   i_mb_size[PIXEL_4x4] / (i_count*4),
3452                   i_mb_count[P_SKIP] / i_count );
3453     }
3454     if( h->stat.i_frame_count[SLICE_TYPE_B] > 0 )
3455     {
3456         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_B];
3457         double i_count = h->stat.i_frame_count[SLICE_TYPE_B] * h->mb.i_mb_count / 100.0;
3458         double i_mb_list_count;
3459         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_B];
3460         int64_t list_count[3] = {0}; /* 0 == L0, 1 == L1, 2 == BI */
3461         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3462         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3463             for( int j = 0; j < 2; j++ )
3464             {
3465                 int l0 = x264_mb_type_list_table[i][0][j];
3466                 int l1 = x264_mb_type_list_table[i][1][j];
3467                 if( l0 || l1 )
3468                     list_count[l1+l0*l1] += h->stat.i_mb_count[SLICE_TYPE_B][i] * 2;
3469             }
3470         list_count[0] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L0_8x8];
3471         list_count[1] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L1_8x8];
3472         list_count[2] += h->stat.i_mb_partition[SLICE_TYPE_B][D_BI_8x8];
3473         i_mb_count[B_DIRECT] += (h->stat.i_mb_partition[SLICE_TYPE_B][D_DIRECT_8x8]+2)/4;
3474         i_mb_list_count = (list_count[0] + list_count[1] + list_count[2]) / 100.0;
3475         sprintf( buf + strlen(buf), "  B16..8: %4.1f%% %4.1f%% %4.1f%%  direct:%4.1f%%  skip:%4.1f%%",
3476                  i_mb_size[PIXEL_16x16] / (i_count*4),
3477                  (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3478                  i_mb_size[PIXEL_8x8] / (i_count*4),
3479                  i_mb_count[B_DIRECT] / i_count,
3480                  i_mb_count[B_SKIP]   / i_count );
3481         if( i_mb_list_count != 0 )
3482             sprintf( buf + strlen(buf), "  L0:%4.1f%% L1:%4.1f%% BI:%4.1f%%",
3483                      list_count[0] / i_mb_list_count,
3484                      list_count[1] / i_mb_list_count,
3485                      list_count[2] / i_mb_list_count );
3486         x264_log( h, X264_LOG_INFO, "mb B  %s\n", buf );
3487     }
3488
3489     x264_ratecontrol_summary( h );
3490
3491     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 )
3492     {
3493 #define SUM3(p) (p[SLICE_TYPE_I] + p[SLICE_TYPE_P] + p[SLICE_TYPE_B])
3494 #define SUM3b(p,o) (p[SLICE_TYPE_I][o] + p[SLICE_TYPE_P][o] + p[SLICE_TYPE_B][o])
3495         int64_t i_i8x8 = SUM3b( h->stat.i_mb_count, I_8x8 );
3496         int64_t i_intra = i_i8x8 + SUM3b( h->stat.i_mb_count, I_4x4 )
3497                                  + SUM3b( h->stat.i_mb_count, I_16x16 );
3498         int64_t i_all_intra = i_intra + SUM3b( h->stat.i_mb_count, I_PCM);
3499         int64_t i_skip = SUM3b( h->stat.i_mb_count, P_SKIP )
3500                        + SUM3b( h->stat.i_mb_count, B_SKIP );
3501         const int i_count = h->stat.i_frame_count[SLICE_TYPE_I] +
3502                             h->stat.i_frame_count[SLICE_TYPE_P] +
3503                             h->stat.i_frame_count[SLICE_TYPE_B];
3504         int64_t i_mb_count = (int64_t)i_count * h->mb.i_mb_count;
3505         int64_t i_inter = i_mb_count - i_skip - i_intra;
3506         const double duration = h->stat.f_frame_duration[SLICE_TYPE_I] +
3507                                 h->stat.f_frame_duration[SLICE_TYPE_P] +
3508                                 h->stat.f_frame_duration[SLICE_TYPE_B];
3509         float f_bitrate = SUM3(h->stat.i_frame_size) / duration / 125;
3510
3511         if( PARAM_INTERLACED )
3512         {
3513             char *fieldstats = buf;
3514             fieldstats[0] = 0;
3515             if( i_inter )
3516                 fieldstats += sprintf( fieldstats, " inter:%.1f%%", h->stat.i_mb_field[1] * 100.0 / i_inter );
3517             if( i_skip )
3518                 fieldstats += sprintf( fieldstats, " skip:%.1f%%", h->stat.i_mb_field[2] * 100.0 / i_skip );
3519             x264_log( h, X264_LOG_INFO, "field mbs: intra: %.1f%%%s\n",
3520                       h->stat.i_mb_field[0] * 100.0 / i_intra, buf );
3521         }
3522
3523         if( h->pps->b_transform_8x8_mode )
3524         {
3525             buf[0] = 0;
3526             if( h->stat.i_mb_count_8x8dct[0] )
3527                 sprintf( buf, " inter:%.1f%%", 100. * h->stat.i_mb_count_8x8dct[1] / h->stat.i_mb_count_8x8dct[0] );
3528             x264_log( h, X264_LOG_INFO, "8x8 transform intra:%.1f%%%s\n", 100. * i_i8x8 / i_intra, buf );
3529         }
3530
3531         if( (h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO ||
3532             (h->stat.i_direct_frames[0] && h->stat.i_direct_frames[1]))
3533             && h->stat.i_frame_count[SLICE_TYPE_B] )
3534         {
3535             x264_log( h, X264_LOG_INFO, "direct mvs  spatial:%.1f%% temporal:%.1f%%\n",
3536                       h->stat.i_direct_frames[1] * 100. / h->stat.i_frame_count[SLICE_TYPE_B],
3537                       h->stat.i_direct_frames[0] * 100. / h->stat.i_frame_count[SLICE_TYPE_B] );
3538         }
3539
3540         buf[0] = 0;
3541         int csize = CHROMA444 ? 4 : 1;
3542         if( i_mb_count != i_all_intra )
3543             sprintf( buf, " inter: %.1f%% %.1f%% %.1f%%",
3544                      h->stat.i_mb_cbp[1] * 100.0 / ((i_mb_count - i_all_intra)*4),
3545                      h->stat.i_mb_cbp[3] * 100.0 / ((i_mb_count - i_all_intra)*csize),
3546                      h->stat.i_mb_cbp[5] * 100.0 / ((i_mb_count - i_all_intra)*csize) );
3547         x264_log( h, X264_LOG_INFO, "coded y,%s,%s intra: %.1f%% %.1f%% %.1f%%%s\n",
3548                   CHROMA444?"u":"uvDC", CHROMA444?"v":"uvAC",
3549                   h->stat.i_mb_cbp[0] * 100.0 / (i_all_intra*4),
3550                   h->stat.i_mb_cbp[2] * 100.0 / (i_all_intra*csize),
3551                   h->stat.i_mb_cbp[4] * 100.0 / (i_all_intra*csize), buf );
3552
3553         int64_t fixed_pred_modes[4][9] = {{0}};
3554         int64_t sum_pred_modes[4] = {0};
3555         for( int i = 0; i <= I_PRED_16x16_DC_128; i++ )
3556         {
3557             fixed_pred_modes[0][x264_mb_pred_mode16x16_fix[i]] += h->stat.i_mb_pred_mode[0][i];
3558             sum_pred_modes[0] += h->stat.i_mb_pred_mode[0][i];
3559         }
3560         if( sum_pred_modes[0] )
3561             x264_log( h, X264_LOG_INFO, "i16 v,h,dc,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3562                       fixed_pred_modes[0][0] * 100.0 / sum_pred_modes[0],
3563                       fixed_pred_modes[0][1] * 100.0 / sum_pred_modes[0],
3564                       fixed_pred_modes[0][2] * 100.0 / sum_pred_modes[0],
3565                       fixed_pred_modes[0][3] * 100.0 / sum_pred_modes[0] );
3566         for( int i = 1; i <= 2; i++ )
3567         {
3568             for( int j = 0; j <= I_PRED_8x8_DC_128; j++ )
3569             {
3570                 fixed_pred_modes[i][x264_mb_pred_mode4x4_fix(j)] += h->stat.i_mb_pred_mode[i][j];
3571                 sum_pred_modes[i] += h->stat.i_mb_pred_mode[i][j];
3572             }
3573             if( sum_pred_modes[i] )
3574                 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,
3575                           fixed_pred_modes[i][0] * 100.0 / sum_pred_modes[i],
3576                           fixed_pred_modes[i][1] * 100.0 / sum_pred_modes[i],
3577                           fixed_pred_modes[i][2] * 100.0 / sum_pred_modes[i],
3578                           fixed_pred_modes[i][3] * 100.0 / sum_pred_modes[i],
3579                           fixed_pred_modes[i][4] * 100.0 / sum_pred_modes[i],
3580                           fixed_pred_modes[i][5] * 100.0 / sum_pred_modes[i],
3581                           fixed_pred_modes[i][6] * 100.0 / sum_pred_modes[i],
3582                           fixed_pred_modes[i][7] * 100.0 / sum_pred_modes[i],
3583                           fixed_pred_modes[i][8] * 100.0 / sum_pred_modes[i] );
3584         }
3585         for( int i = 0; i <= I_PRED_CHROMA_DC_128; i++ )
3586         {
3587             fixed_pred_modes[3][x264_mb_chroma_pred_mode_fix[i]] += h->stat.i_mb_pred_mode[3][i];
3588             sum_pred_modes[3] += h->stat.i_mb_pred_mode[3][i];
3589         }
3590         if( sum_pred_modes[3] && !CHROMA444 )
3591             x264_log( h, X264_LOG_INFO, "i8c dc,h,v,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3592                       fixed_pred_modes[3][0] * 100.0 / sum_pred_modes[3],
3593                       fixed_pred_modes[3][1] * 100.0 / sum_pred_modes[3],
3594                       fixed_pred_modes[3][2] * 100.0 / sum_pred_modes[3],
3595                       fixed_pred_modes[3][3] * 100.0 / sum_pred_modes[3] );
3596
3597         if( h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE && h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3598             x264_log( h, X264_LOG_INFO, "Weighted P-Frames: Y:%.1f%% UV:%.1f%%\n",
3599                       h->stat.i_wpred[0] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P],
3600                       h->stat.i_wpred[1] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P] );
3601
3602         for( int i_list = 0; i_list < 2; i_list++ )
3603             for( int i_slice = 0; i_slice < 2; i_slice++ )
3604             {
3605                 char *p = buf;
3606                 int64_t i_den = 0;
3607                 int i_max = 0;
3608                 for( int i = 0; i < X264_REF_MAX*2; i++ )
3609                     if( h->stat.i_mb_count_ref[i_slice][i_list][i] )
3610                     {
3611                         i_den += h->stat.i_mb_count_ref[i_slice][i_list][i];
3612                         i_max = i;
3613                     }
3614                 if( i_max == 0 )
3615                     continue;
3616                 for( int i = 0; i <= i_max; i++ )
3617                     p += sprintf( p, " %4.1f%%", 100. * h->stat.i_mb_count_ref[i_slice][i_list][i] / i_den );
3618                 x264_log( h, X264_LOG_INFO, "ref %c L%d:%s\n", "PB"[i_slice], i_list, buf );
3619             }
3620
3621         if( h->param.analyse.b_ssim )
3622         {
3623             float ssim = SUM3( h->stat.f_ssim_mean_y ) / duration;
3624             x264_log( h, X264_LOG_INFO, "SSIM Mean Y:%.7f (%6.3fdb)\n", ssim, x264_ssim( ssim ) );
3625         }
3626         if( h->param.analyse.b_psnr )
3627         {
3628             x264_log( h, X264_LOG_INFO,
3629                       "PSNR Mean Y:%6.3f U:%6.3f V:%6.3f Avg:%6.3f Global:%6.3f kb/s:%.2f\n",
3630                       SUM3( h->stat.f_psnr_mean_y ) / duration,
3631                       SUM3( h->stat.f_psnr_mean_u ) / duration,
3632                       SUM3( h->stat.f_psnr_mean_v ) / duration,
3633                       SUM3( h->stat.f_psnr_average ) / duration,
3634                       x264_psnr( SUM3( h->stat.f_ssd_global ), duration * i_yuv_size ),
3635                       f_bitrate );
3636         }
3637         else
3638             x264_log( h, X264_LOG_INFO, "kb/s:%.2f\n", f_bitrate );
3639     }
3640
3641     /* rc */
3642     x264_ratecontrol_delete( h );
3643
3644     /* param */
3645     if( h->param.rc.psz_stat_out )
3646         free( h->param.rc.psz_stat_out );
3647     if( h->param.rc.psz_stat_in )
3648         free( h->param.rc.psz_stat_in );
3649
3650     x264_cqm_delete( h );
3651     x264_free( h->nal_buffer );
3652     x264_analyse_free_costs( h );
3653
3654     if( h->i_thread_frames > 1)
3655         h = h->thread[h->i_thread_phase];
3656
3657     /* frames */
3658     x264_frame_delete_list( h->frames.unused[0] );
3659     x264_frame_delete_list( h->frames.unused[1] );
3660     x264_frame_delete_list( h->frames.current );
3661     x264_frame_delete_list( h->frames.blank_unused );
3662
3663     h = h->thread[0];
3664
3665     for( int i = 0; i < h->i_thread_frames; i++ )
3666         if( h->thread[i]->b_thread_active )
3667             for( int j = 0; j < h->thread[i]->i_ref[0]; j++ )
3668                 if( h->thread[i]->fref[0][j] && h->thread[i]->fref[0][j]->b_duplicate )
3669                     x264_frame_delete( h->thread[i]->fref[0][j] );
3670
3671     for( int i = h->param.i_threads - 1; i >= 0; i-- )
3672     {
3673         x264_frame_t **frame;
3674
3675         if( !h->param.b_sliced_threads || i == 0 )
3676         {
3677             for( frame = h->thread[i]->frames.reference; *frame; frame++ )
3678             {
3679                 assert( (*frame)->i_reference_count > 0 );
3680                 (*frame)->i_reference_count--;
3681                 if( (*frame)->i_reference_count == 0 )
3682                     x264_frame_delete( *frame );
3683             }
3684             frame = &h->thread[i]->fdec;
3685             if( *frame )
3686             {
3687                 assert( (*frame)->i_reference_count > 0 );
3688                 (*frame)->i_reference_count--;
3689                 if( (*frame)->i_reference_count == 0 )
3690                     x264_frame_delete( *frame );
3691             }
3692             x264_macroblock_cache_free( h->thread[i] );
3693         }
3694         x264_macroblock_thread_free( h->thread[i], 0 );
3695         x264_free( h->thread[i]->out.p_bitstream );
3696         x264_free( h->thread[i]->out.nal);
3697         x264_free( h->thread[i] );
3698     }
3699 }
3700
3701 int x264_encoder_delayed_frames( x264_t *h )
3702 {
3703     int delayed_frames = 0;
3704     if( h->i_thread_frames > 1 )
3705     {
3706         for( int i = 0; i < h->i_thread_frames; i++ )
3707             delayed_frames += h->thread[i]->b_thread_active;
3708         h = h->thread[h->i_thread_phase];
3709     }
3710     for( int i = 0; h->frames.current[i]; i++ )
3711         delayed_frames++;
3712     x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
3713     x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
3714     x264_pthread_mutex_lock( &h->lookahead->next.mutex );
3715     delayed_frames += h->lookahead->ifbuf.i_size + h->lookahead->next.i_size + h->lookahead->ofbuf.i_size;
3716     x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
3717     x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
3718     x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
3719     return delayed_frames;
3720 }
3721
3722 int x264_encoder_maximum_delayed_frames( x264_t *h )
3723 {
3724     return h->frames.i_delay;
3725 }