git.sesse.net Git - x264/blob - encoder/encoder.c

   1 /*****************************************************************************
   2  * encoder.c: top-level encoder functions
   3  *****************************************************************************
   4  * Copyright (C) 2003-2011 x264 project
   5  *
   6  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   7  *          Loren Merritt <lorenm@u.washington.edu>
   8  *          Fiona Glaser <fiona@x264.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     return -10.0 * log10( 1 - ssim );
  65 }
  66
  67 static void x264_frame_dump( x264_t *h )
  68 {
  69     FILE *f = fopen( h->param.psz_dump_yuv, "r+b" );
  70     if( !f )
  71         return;
  72     /* Write the frame in display order */
  73     fseek( f, (uint64_t)h->fdec->i_frame * h->param.i_height * h->param.i_width * 3/2 * sizeof(pixel), SEEK_SET );
  74     for( int y = 0; y < h->param.i_height; y++ )
  75         fwrite( &h->fdec->plane[0][y*h->fdec->i_stride[0]], sizeof(pixel), h->param.i_width, f );
  76     int cw = h->param.i_width>>1;
  77     int ch = h->param.i_height>>1;
  78     pixel *planeu = x264_malloc( (cw*ch*2+32)*sizeof(pixel) );
  79     pixel *planev = planeu + cw*ch + 16;
  80     h->mc.plane_copy_deinterleave( planeu, cw, planev, cw, h->fdec->plane[1], h->fdec->i_stride[1], cw, ch );
  81     fwrite( planeu, 1, cw*ch*sizeof(pixel), f );
  82     fwrite( planev, 1, cw*ch*sizeof(pixel), f );
  83     x264_free( planeu );
  84     fclose( f );
  85 }
  86
  87
  88 /* Fill "default" values */
  89 static void x264_slice_header_init( x264_t *h, x264_slice_header_t *sh,
  90                                     x264_sps_t *sps, x264_pps_t *pps,
  91                                     int i_idr_pic_id, int i_frame, int i_qp )
  92 {
  93     x264_param_t *param = &h->param;
  94
  95     /* First we fill all fields */
  96     sh->sps = sps;
  97     sh->pps = pps;
  98
  99     sh->i_first_mb  = 0;
 100     sh->i_last_mb   = h->mb.i_mb_count - 1;
 101     sh->i_pps_id    = pps->i_id;
 102
 103     sh->i_frame_num = i_frame;
 104
 105     sh->b_mbaff = PARAM_INTERLACED;
 106     sh->b_field_pic = 0;    /* no field support for now */
 107     sh->b_bottom_field = 0; /* not yet used */
 108
 109     sh->i_idr_pic_id = i_idr_pic_id;
 110
 111     /* poc stuff, fixed later */
 112     sh->i_poc = 0;
 113     sh->i_delta_poc_bottom = 0;
 114     sh->i_delta_poc[0] = 0;
 115     sh->i_delta_poc[1] = 0;
 116
 117     sh->i_redundant_pic_cnt = 0;
 118
 119     h->mb.b_direct_auto_write = h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO
 120                                 && h->param.i_bframe
 121                                 && ( h->param.rc.b_stat_write || !h->param.rc.b_stat_read );
 122
 123     if( !h->mb.b_direct_auto_read && sh->i_type == SLICE_TYPE_B )
 124     {
 125         if( h->fref[1][0]->i_poc_l0ref0 == h->fref[0][0]->i_poc )
 126         {
 127             if( h->mb.b_direct_auto_write )
 128                 sh->b_direct_spatial_mv_pred = ( h->stat.i_direct_score[1] > h->stat.i_direct_score[0] );
 129             else
 130                 sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
 131         }
 132         else
 133         {
 134             h->mb.b_direct_auto_write = 0;
 135             sh->b_direct_spatial_mv_pred = 1;
 136         }
 137     }
 138     /* else b_direct_spatial_mv_pred was read from the 2pass statsfile */
 139
 140     sh->b_num_ref_idx_override = 0;
 141     sh->i_num_ref_idx_l0_active = 1;
 142     sh->i_num_ref_idx_l1_active = 1;
 143
 144     sh->b_ref_pic_list_reordering[0] = h->b_ref_reorder[0];
 145     sh->b_ref_pic_list_reordering[1] = h->b_ref_reorder[1];
 146
 147     /* If the ref list isn't in the default order, construct reordering header */
 148     for( int list = 0; list < 2; list++ )
 149     {
 150         if( sh->b_ref_pic_list_reordering[list] )
 151         {
 152             int pred_frame_num = i_frame;
 153             for( int i = 0; i < h->i_ref[list]; i++ )
 154             {
 155                 int diff = h->fref[list][i]->i_frame_num - pred_frame_num;
 156                 sh->ref_pic_list_order[list][i].idc = ( diff > 0 );
 157                 sh->ref_pic_list_order[list][i].arg = (abs(diff) - 1) & ((1 << sps->i_log2_max_frame_num) - 1);
 158                 pred_frame_num = h->fref[list][i]->i_frame_num;
 159             }
 160         }
 161     }
 162
 163     sh->i_cabac_init_idc = param->i_cabac_init_idc;
 164
 165     sh->i_qp = SPEC_QP(i_qp);
 166     sh->i_qp_delta = sh->i_qp - pps->i_pic_init_qp;
 167     sh->b_sp_for_swidth = 0;
 168     sh->i_qs_delta = 0;
 169
 170     int deblock_thresh = i_qp + 2 * X264_MIN(param->i_deblocking_filter_alphac0, param->i_deblocking_filter_beta);
 171     /* If effective qp <= 15, deblocking would have no effect anyway */
 172     if( param->b_deblocking_filter && (h->mb.b_variable_qp || 15 < deblock_thresh ) )
 173         sh->i_disable_deblocking_filter_idc = param->b_sliced_threads ? 2 : 0;
 174     else
 175         sh->i_disable_deblocking_filter_idc = 1;
 176     sh->i_alpha_c0_offset = param->i_deblocking_filter_alphac0 << 1;
 177     sh->i_beta_offset = param->i_deblocking_filter_beta << 1;
 178 }
 179
 180 static void x264_slice_header_write( bs_t *s, x264_slice_header_t *sh, int i_nal_ref_idc )
 181 {
 182     if( sh->b_mbaff )
 183     {
 184         int first_x = sh->i_first_mb % sh->sps->i_mb_width;
 185         int first_y = sh->i_first_mb / sh->sps->i_mb_width;
 186         assert( (first_y&1) == 0 );
 187         bs_write_ue( s, (2*first_x + sh->sps->i_mb_width*(first_y&~1) + (first_y&1)) >> 1 );
 188     }
 189     else
 190         bs_write_ue( s, sh->i_first_mb );
 191
 192     bs_write_ue( s, sh->i_type + 5 );   /* same type things */
 193     bs_write_ue( s, sh->i_pps_id );
 194     bs_write( s, sh->sps->i_log2_max_frame_num, sh->i_frame_num & ((1<<sh->sps->i_log2_max_frame_num)-1) );
 195
 196     if( !sh->sps->b_frame_mbs_only )
 197     {
 198         bs_write1( s, sh->b_field_pic );
 199         if( sh->b_field_pic )
 200             bs_write1( s, sh->b_bottom_field );
 201     }
 202
 203     if( sh->i_idr_pic_id >= 0 ) /* NAL IDR */
 204         bs_write_ue( s, sh->i_idr_pic_id );
 205
 206     if( sh->sps->i_poc_type == 0 )
 207     {
 208         bs_write( s, sh->sps->i_log2_max_poc_lsb, sh->i_poc & ((1<<sh->sps->i_log2_max_poc_lsb)-1) );
 209         if( sh->pps->b_pic_order && !sh->b_field_pic )
 210             bs_write_se( s, sh->i_delta_poc_bottom );
 211     }
 212     else if( sh->sps->i_poc_type == 1 && !sh->sps->b_delta_pic_order_always_zero )
 213     {
 214         bs_write_se( s, sh->i_delta_poc[0] );
 215         if( sh->pps->b_pic_order && !sh->b_field_pic )
 216             bs_write_se( s, sh->i_delta_poc[1] );
 217     }
 218
 219     if( sh->pps->b_redundant_pic_cnt )
 220         bs_write_ue( s, sh->i_redundant_pic_cnt );
 221
 222     if( sh->i_type == SLICE_TYPE_B )
 223         bs_write1( s, sh->b_direct_spatial_mv_pred );
 224
 225     if( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_B )
 226     {
 227         bs_write1( s, sh->b_num_ref_idx_override );
 228         if( sh->b_num_ref_idx_override )
 229         {
 230             bs_write_ue( s, sh->i_num_ref_idx_l0_active - 1 );
 231             if( sh->i_type == SLICE_TYPE_B )
 232                 bs_write_ue( s, sh->i_num_ref_idx_l1_active - 1 );
 233         }
 234     }
 235
 236     /* ref pic list reordering */
 237     if( sh->i_type != SLICE_TYPE_I )
 238     {
 239         bs_write1( s, sh->b_ref_pic_list_reordering[0] );
 240         if( sh->b_ref_pic_list_reordering[0] )
 241         {
 242             for( int i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
 243             {
 244                 bs_write_ue( s, sh->ref_pic_list_order[0][i].idc );
 245                 bs_write_ue( s, sh->ref_pic_list_order[0][i].arg );
 246             }
 247             bs_write_ue( s, 3 );
 248         }
 249     }
 250     if( sh->i_type == SLICE_TYPE_B )
 251     {
 252         bs_write1( s, sh->b_ref_pic_list_reordering[1] );
 253         if( sh->b_ref_pic_list_reordering[1] )
 254         {
 255             for( int i = 0; i < sh->i_num_ref_idx_l1_active; i++ )
 256             {
 257                 bs_write_ue( s, sh->ref_pic_list_order[1][i].idc );
 258                 bs_write_ue( s, sh->ref_pic_list_order[1][i].arg );
 259             }
 260             bs_write_ue( s, 3 );
 261         }
 262     }
 263
 264     if( sh->pps->b_weighted_pred && sh->i_type == SLICE_TYPE_P )
 265     {
 266         /* pred_weight_table() */
 267         bs_write_ue( s, sh->weight[0][0].i_denom );
 268         bs_write_ue( s, sh->weight[0][1].i_denom );
 269         for( int i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
 270         {
 271             int luma_weight_l0_flag = !!sh->weight[i][0].weightfn;
 272             int chroma_weight_l0_flag = !!sh->weight[i][1].weightfn || !!sh->weight[i][2].weightfn;
 273             bs_write1( s, luma_weight_l0_flag );
 274             if( luma_weight_l0_flag )
 275             {
 276                 bs_write_se( s, sh->weight[i][0].i_scale );
 277                 bs_write_se( s, sh->weight[i][0].i_offset );
 278             }
 279             bs_write1( s, chroma_weight_l0_flag );
 280             if( chroma_weight_l0_flag )
 281             {
 282                 for( int j = 1; j < 3; j++ )
 283                 {
 284                     bs_write_se( s, sh->weight[i][j].i_scale );
 285                     bs_write_se( s, sh->weight[i][j].i_offset );
 286                 }
 287             }
 288         }
 289     }
 290     else if( sh->pps->b_weighted_bipred == 1 && sh->i_type == SLICE_TYPE_B )
 291     {
 292       /* TODO */
 293     }
 294
 295     if( i_nal_ref_idc != 0 )
 296     {
 297         if( sh->i_idr_pic_id >= 0 )
 298         {
 299             bs_write1( s, 0 );  /* no output of prior pics flag */
 300             bs_write1( s, 0 );  /* long term reference flag */
 301         }
 302         else
 303         {
 304             bs_write1( s, sh->i_mmco_command_count > 0 ); /* adaptive_ref_pic_marking_mode_flag */
 305             if( sh->i_mmco_command_count > 0 )
 306             {
 307                 for( int i = 0; i < sh->i_mmco_command_count; i++ )
 308                 {
 309                     bs_write_ue( s, 1 ); /* mark short term ref as unused */
 310                     bs_write_ue( s, sh->mmco[i].i_difference_of_pic_nums - 1 );
 311                 }
 312                 bs_write_ue( s, 0 ); /* end command list */
 313             }
 314         }
 315     }
 316
 317     if( sh->pps->b_cabac && sh->i_type != SLICE_TYPE_I )
 318         bs_write_ue( s, sh->i_cabac_init_idc );
 319
 320     bs_write_se( s, sh->i_qp_delta );      /* slice qp delta */
 321
 322     if( sh->pps->b_deblocking_filter_control )
 323     {
 324         bs_write_ue( s, sh->i_disable_deblocking_filter_idc );
 325         if( sh->i_disable_deblocking_filter_idc != 1 )
 326         {
 327             bs_write_se( s, sh->i_alpha_c0_offset >> 1 );
 328             bs_write_se( s, sh->i_beta_offset >> 1 );
 329         }
 330     }
 331 }
 332
 333 /* If we are within a reasonable distance of the end of the memory allocated for the bitstream, */
 334 /* reallocate, adding an arbitrary amount of space (100 kilobytes). */
 335 static int x264_bitstream_check_buffer( x264_t *h )
 336 {
 337     uint8_t *bs_bak = h->out.p_bitstream;
 338     if( (h->param.b_cabac && (h->cabac.p_end - h->cabac.p < 2500)) ||
 339         (h->out.bs.p_end - h->out.bs.p < 2500) )
 340     {
 341         h->out.i_bitstream += 100000;
 342         CHECKED_MALLOC( h->out.p_bitstream, h->out.i_bitstream );
 343         h->mc.memcpy_aligned( h->out.p_bitstream, bs_bak, (h->out.i_bitstream - 100000) & ~15 );
 344         intptr_t delta = h->out.p_bitstream - bs_bak;
 345
 346         h->out.bs.p_start += delta;
 347         h->out.bs.p += delta;
 348         h->out.bs.p_end = h->out.p_bitstream + h->out.i_bitstream;
 349
 350         h->cabac.p_start += delta;
 351         h->cabac.p += delta;
 352         h->cabac.p_end = h->out.p_bitstream + h->out.i_bitstream;
 353
 354         for( int i = 0; i <= h->out.i_nal; i++ )
 355             h->out.nal[i].p_payload += delta;
 356         x264_free( bs_bak );
 357     }
 358     return 0;
 359 fail:
 360     x264_free( bs_bak );
 361     return -1;
 362 }
 363
 364 #if HAVE_THREAD
 365 static void x264_encoder_thread_init( x264_t *h )
 366 {
 367     if( h->param.i_sync_lookahead )
 368         x264_lower_thread_priority( 10 );
 369
 370 #if HAVE_MMX
 371     /* Misalign mask has to be set separately for each thread. */
 372     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
 373         x264_cpu_mask_misalign_sse();
 374 #endif
 375 }
 376 #endif
 377
 378 /****************************************************************************
 379  *
 380  ****************************************************************************
 381  ****************************** External API*********************************
 382  ****************************************************************************
 383  *
 384  ****************************************************************************/
 385
 386 static int x264_validate_parameters( x264_t *h, int b_open )
 387 {
 388 #if HAVE_MMX
 389 #ifdef __SSE__
 390     if( b_open && !(x264_cpu_detect() & X264_CPU_SSE) )
 391     {
 392         x264_log( h, X264_LOG_ERROR, "your cpu does not support SSE1, but x264 was compiled with asm support\n");
 393 #else
 394     if( b_open && !(x264_cpu_detect() & X264_CPU_MMXEXT) )
 395     {
 396         x264_log( h, X264_LOG_ERROR, "your cpu does not support MMXEXT, but x264 was compiled with asm support\n");
 397 #endif
 398         x264_log( h, X264_LOG_ERROR, "to run x264, recompile without asm support (configure --disable-asm)\n");
 399         return -1;
 400     }
 401 #endif
 402     if( h->param.i_width <= 0 || h->param.i_height <= 0 )
 403     {
 404         x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
 405                   h->param.i_width, h->param.i_height );
 406         return -1;
 407     }
 408
 409     if( h->param.i_width % 2 || h->param.i_height % 2 )
 410     {
 411         x264_log( h, X264_LOG_ERROR, "width or height not divisible by 2 (%dx%d)\n",
 412                   h->param.i_width, h->param.i_height );
 413         return -1;
 414     }
 415     int i_csp = h->param.i_csp & X264_CSP_MASK;
 416     if( i_csp <= X264_CSP_NONE || i_csp >= X264_CSP_MAX )
 417     {
 418         x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420/YV12/NV12 supported)\n" );
 419         return -1;
 420     }
 421
 422 #if HAVE_INTERLACED
 423     h->param.b_interlaced = !!PARAM_INTERLACED;
 424 #else
 425     if( h->param.b_interlaced )
 426     {
 427         x264_log( h, X264_LOG_ERROR, "not compiled with interlaced support\n" );
 428         return -1;
 429     }
 430 #endif
 431
 432     if( (h->param.crop_rect.i_left + h->param.crop_rect.i_right ) >= h->param.i_width ||
 433         (h->param.crop_rect.i_top  + h->param.crop_rect.i_bottom) >= h->param.i_height )
 434     {
 435         x264_log( h, X264_LOG_ERROR, "invalid crop-rect %u,%u,%u,%u\n", h->param.crop_rect.i_left,
 436                   h->param.crop_rect.i_top, h->param.crop_rect.i_right,  h->param.crop_rect.i_bottom );
 437         return -1;
 438     }
 439
 440     if( h->param.i_threads == X264_THREADS_AUTO )
 441         h->param.i_threads = x264_cpu_num_processors() * (h->param.b_sliced_threads?2:3)/2;
 442     h->param.i_threads = x264_clip3( h->param.i_threads, 1, X264_THREAD_MAX );
 443     if( h->param.i_threads > 1 )
 444     {
 445 #if !HAVE_THREAD
 446         x264_log( h, X264_LOG_WARNING, "not compiled with thread support!\n");
 447         h->param.i_threads = 1;
 448 #endif
 449         /* Avoid absurdly small thread slices as they can reduce performance
 450          * and VBV compliance.  Capped at an arbitrary 4 rows per thread. */
 451         if( h->param.b_sliced_threads )
 452         {
 453             int max_threads = (h->param.i_height+15)/16 / 4;
 454             h->param.i_threads = X264_MIN( h->param.i_threads, max_threads );
 455         }
 456     }
 457     else
 458         h->param.b_sliced_threads = 0;
 459     h->i_thread_frames = h->param.b_sliced_threads ? 1 : h->param.i_threads;
 460     if( h->i_thread_frames > 1 )
 461         h->param.nalu_process = NULL;
 462
 463     h->param.i_keyint_max = x264_clip3( h->param.i_keyint_max, 1, X264_KEYINT_MAX_INFINITE );
 464     if( h->param.i_keyint_max == 1 )
 465     {
 466         h->param.b_intra_refresh = 0;
 467         h->param.analyse.i_weighted_pred = 0;
 468     }
 469
 470     h->param.i_frame_packing = x264_clip3( h->param.i_frame_packing, -1, 5 );
 471
 472     /* Detect default ffmpeg settings and terminate with an error. */
 473     if( b_open )
 474     {
 475         int score = 0;
 476         score += h->param.analyse.i_me_range == 0;
 477         score += h->param.rc.i_qp_step == 3;
 478         score += h->param.i_keyint_max == 12;
 479         score += h->param.rc.i_qp_min == 2;
 480         score += h->param.rc.i_qp_max == 31;
 481         score += h->param.rc.f_qcompress == 0.5;
 482         score += fabs(h->param.rc.f_ip_factor - 1.25) < 0.01;
 483         score += fabs(h->param.rc.f_pb_factor - 1.25) < 0.01;
 484         score += h->param.analyse.inter == 0 && h->param.analyse.i_subpel_refine == 8;
 485         if( score >= 5 )
 486         {
 487             x264_log( h, X264_LOG_ERROR, "broken ffmpeg default settings detected\n" );
 488             x264_log( h, X264_LOG_ERROR, "use an encoding preset (e.g. -vpre medium)\n" );
 489             x264_log( h, X264_LOG_ERROR, "preset usage: -vpre <speed> -vpre <profile>\n" );
 490             x264_log( h, X264_LOG_ERROR, "speed presets are listed in x264 --help\n" );
 491             x264_log( h, X264_LOG_ERROR, "profile is optional; x264 defaults to high\n" );
 492             return -1;
 493         }
 494     }
 495
 496     if( h->param.rc.i_rc_method < 0 || h->param.rc.i_rc_method > 2 )
 497     {
 498         x264_log( h, X264_LOG_ERROR, "no ratecontrol method specified\n" );
 499         return -1;
 500     }
 501     h->param.rc.f_rf_constant = x264_clip3f( h->param.rc.f_rf_constant, -QP_BD_OFFSET, 51 );
 502     h->param.rc.f_rf_constant_max = x264_clip3f( h->param.rc.f_rf_constant_max, -QP_BD_OFFSET, 51 );
 503     h->param.rc.i_qp_constant = x264_clip3( h->param.rc.i_qp_constant, 0, QP_MAX );
 504     h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 0, 10 );
 505     h->param.rc.f_ip_factor = X264_MAX( h->param.rc.f_ip_factor, 0.01f );
 506     h->param.rc.f_pb_factor = X264_MAX( h->param.rc.f_pb_factor, 0.01f );
 507     if( h->param.rc.i_rc_method == X264_RC_CRF )
 508     {
 509         h->param.rc.i_qp_constant = h->param.rc.f_rf_constant + QP_BD_OFFSET;
 510         h->param.rc.i_bitrate = 0;
 511     }
 512     if( (h->param.rc.i_rc_method == X264_RC_CQP || h->param.rc.i_rc_method == X264_RC_CRF)
 513         && h->param.rc.i_qp_constant == 0 )
 514     {
 515         h->mb.b_lossless = 1;
 516         h->param.i_cqm_preset = X264_CQM_FLAT;
 517         h->param.psz_cqm_file = NULL;
 518         h->param.rc.i_rc_method = X264_RC_CQP;
 519         h->param.rc.f_ip_factor = 1;
 520         h->param.rc.f_pb_factor = 1;
 521         h->param.analyse.b_psnr = 0;
 522         h->param.analyse.b_ssim = 0;
 523         h->param.analyse.i_chroma_qp_offset = 0;
 524         h->param.analyse.i_trellis = 0;
 525         h->param.analyse.b_fast_pskip = 0;
 526         h->param.analyse.i_noise_reduction = 0;
 527         h->param.analyse.b_psy = 0;
 528         h->param.i_bframe = 0;
 529         /* 8x8dct is not useful without RD in CAVLC lossless */
 530         if( !h->param.b_cabac && h->param.analyse.i_subpel_refine < 6 )
 531             h->param.analyse.b_transform_8x8 = 0;
 532     }
 533     if( h->param.rc.i_rc_method == X264_RC_CQP )
 534     {
 535         float qp_p = h->param.rc.i_qp_constant;
 536         float qp_i = qp_p - 6*log2f( h->param.rc.f_ip_factor );
 537         float qp_b = qp_p + 6*log2f( h->param.rc.f_pb_factor );
 538         h->param.rc.i_qp_min = x264_clip3( (int)(X264_MIN3( qp_p, qp_i, qp_b )), 0, QP_MAX );
 539         h->param.rc.i_qp_max = x264_clip3( (int)(X264_MAX3( qp_p, qp_i, qp_b ) + .999), 0, QP_MAX );
 540         h->param.rc.i_aq_mode = 0;
 541         h->param.rc.b_mb_tree = 0;
 542         h->param.rc.i_bitrate = 0;
 543     }
 544     h->param.rc.i_qp_max = x264_clip3( h->param.rc.i_qp_max, 0, QP_MAX );
 545     h->param.rc.i_qp_min = x264_clip3( h->param.rc.i_qp_min, 0, h->param.rc.i_qp_max );
 546     h->param.rc.i_qp_step = x264_clip3( h->param.rc.i_qp_step, 0, QP_MAX );
 547     h->param.rc.i_bitrate = x264_clip3( h->param.rc.i_bitrate, 0, 2000000 );
 548     h->param.rc.i_vbv_buffer_size = x264_clip3( h->param.rc.i_vbv_buffer_size, 0, 2000000 );
 549     h->param.rc.i_vbv_max_bitrate = x264_clip3( h->param.rc.i_vbv_max_bitrate, 0, 2000000 );
 550     h->param.rc.f_vbv_buffer_init = x264_clip3f( h->param.rc.f_vbv_buffer_init, 0, 2000000 );
 551     if( h->param.rc.i_vbv_buffer_size )
 552     {
 553         if( h->param.rc.i_rc_method == X264_RC_CQP )
 554         {
 555             x264_log( h, X264_LOG_WARNING, "VBV is incompatible with constant QP, ignored.\n" );
 556             h->param.rc.i_vbv_max_bitrate = 0;
 557             h->param.rc.i_vbv_buffer_size = 0;
 558         }
 559         else if( h->param.rc.i_vbv_max_bitrate == 0 )
 560         {
 561             if( h->param.rc.i_rc_method == X264_RC_ABR )
 562             {
 563                 x264_log( h, X264_LOG_WARNING, "VBV maxrate unspecified, assuming CBR\n" );
 564                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
 565             }
 566             else
 567             {
 568                 x264_log( h, X264_LOG_WARNING, "VBV bufsize set but maxrate unspecified, ignored\n" );
 569                 h->param.rc.i_vbv_buffer_size = 0;
 570             }
 571         }
 572         else if( h->param.rc.i_vbv_max_bitrate < h->param.rc.i_bitrate &&
 573                  h->param.rc.i_rc_method == X264_RC_ABR )
 574         {
 575             x264_log( h, X264_LOG_WARNING, "max bitrate less than average bitrate, assuming CBR\n" );
 576             h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate;
 577         }
 578     }
 579     else if( h->param.rc.i_vbv_max_bitrate )
 580     {
 581         x264_log( h, X264_LOG_WARNING, "VBV maxrate specified, but no bufsize, ignored\n" );
 582         h->param.rc.i_vbv_max_bitrate = 0;
 583     }
 584
 585     h->param.i_slice_max_size = X264_MAX( h->param.i_slice_max_size, 0 );
 586     h->param.i_slice_max_mbs = X264_MAX( h->param.i_slice_max_mbs, 0 );
 587
 588     int max_slices = (h->param.i_height+((16<<PARAM_INTERLACED)-1))/(16<<PARAM_INTERLACED);
 589     if( h->param.b_sliced_threads )
 590         h->param.i_slice_count = x264_clip3( h->param.i_threads, 0, max_slices );
 591     else
 592     {
 593         h->param.i_slice_count = x264_clip3( h->param.i_slice_count, 0, max_slices );
 594         if( h->param.i_slice_max_mbs || h->param.i_slice_max_size )
 595             h->param.i_slice_count = 0;
 596     }
 597
 598     if( h->param.b_bluray_compat )
 599     {
 600         h->param.i_bframe_pyramid = X264_MIN( X264_B_PYRAMID_STRICT, h->param.i_bframe_pyramid );
 601         h->param.i_bframe = X264_MIN( h->param.i_bframe, 3 );
 602         h->param.b_aud = 1;
 603         h->param.i_nal_hrd = X264_MAX( h->param.i_nal_hrd, X264_NAL_HRD_VBR );
 604         h->param.i_slice_max_size = 0;
 605         h->param.i_slice_max_mbs = 0;
 606         h->param.b_intra_refresh = 0;
 607         h->param.i_frame_reference = X264_MIN( h->param.i_frame_reference, 6 );
 608         h->param.i_dpb_size = X264_MIN( h->param.i_dpb_size, 6 );
 609         /* Due to the proliferation of broken players that don't handle dupes properly. */
 610         h->param.analyse.i_weighted_pred = X264_MIN( h->param.analyse.i_weighted_pred, X264_WEIGHTP_SIMPLE );
 611         if( h->param.b_fake_interlaced )
 612             h->param.b_pic_struct = 1;
 613     }
 614
 615     h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, X264_REF_MAX );
 616     h->param.i_dpb_size = x264_clip3( h->param.i_dpb_size, 1, X264_REF_MAX );
 617     if( h->param.i_scenecut_threshold < 0 )
 618         h->param.i_scenecut_threshold = 0;
 619     h->param.analyse.i_direct_mv_pred = x264_clip3( h->param.analyse.i_direct_mv_pred, X264_DIRECT_PRED_NONE, X264_DIRECT_PRED_AUTO );
 620     if( !h->param.analyse.i_subpel_refine && h->param.analyse.i_direct_mv_pred > X264_DIRECT_PRED_SPATIAL )
 621     {
 622         x264_log( h, X264_LOG_WARNING, "subme=0 + direct=temporal is not supported\n" );
 623         h->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
 624     }
 625     h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_MIN( X264_BFRAME_MAX, h->param.i_keyint_max-1 ) );
 626     h->param.i_bframe_bias = x264_clip3( h->param.i_bframe_bias, -90, 100 );
 627     if( h->param.i_bframe <= 1 )
 628         h->param.i_bframe_pyramid = X264_B_PYRAMID_NONE;
 629     h->param.i_bframe_pyramid = x264_clip3( h->param.i_bframe_pyramid, X264_B_PYRAMID_NONE, X264_B_PYRAMID_NORMAL );
 630     h->param.i_bframe_adaptive = x264_clip3( h->param.i_bframe_adaptive, X264_B_ADAPT_NONE, X264_B_ADAPT_TRELLIS );
 631     if( !h->param.i_bframe )
 632     {
 633         h->param.i_bframe_adaptive = X264_B_ADAPT_NONE;
 634         h->param.analyse.i_direct_mv_pred = 0;
 635         h->param.analyse.b_weighted_bipred = 0;
 636         h->param.b_open_gop = 0;
 637     }
 638     if( h->param.b_intra_refresh && h->param.i_bframe_pyramid == X264_B_PYRAMID_NORMAL )
 639     {
 640         x264_log( h, X264_LOG_WARNING, "b-pyramid normal + intra-refresh is not supported\n" );
 641         h->param.i_bframe_pyramid = X264_B_PYRAMID_STRICT;
 642     }
 643     if( h->param.b_intra_refresh && (h->param.i_frame_reference > 1 || h->param.i_dpb_size > 1) )
 644     {
 645         x264_log( h, X264_LOG_WARNING, "ref > 1 + intra-refresh is not supported\n" );
 646         h->param.i_frame_reference = 1;
 647         h->param.i_dpb_size = 1;
 648     }
 649     if( h->param.b_intra_refresh && h->param.b_open_gop )
 650     {
 651         x264_log( h, X264_LOG_WARNING, "intra-refresh is not compatible with open-gop\n" );
 652         h->param.b_open_gop = 0;
 653     }
 654     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;
 655     if( h->param.i_keyint_min == X264_KEYINT_MIN_AUTO )
 656         h->param.i_keyint_min = X264_MIN( h->param.i_keyint_max / 10, fps );
 657     h->param.i_keyint_min = x264_clip3( h->param.i_keyint_min, 1, h->param.i_keyint_max/2+1 );
 658     h->param.rc.i_lookahead = x264_clip3( h->param.rc.i_lookahead, 0, X264_LOOKAHEAD_MAX );
 659     {
 660         int maxrate = X264_MAX( h->param.rc.i_vbv_max_bitrate, h->param.rc.i_bitrate );
 661         float bufsize = maxrate ? (float)h->param.rc.i_vbv_buffer_size / maxrate : 0;
 662         h->param.rc.i_lookahead = X264_MIN( h->param.rc.i_lookahead, X264_MAX( h->param.i_keyint_max, bufsize*fps ) );
 663     }
 664
 665     if( !h->param.i_timebase_num || !h->param.i_timebase_den || !(h->param.b_vfr_input || h->param.b_pulldown) )
 666     {
 667         h->param.i_timebase_num = h->param.i_fps_den;
 668         h->param.i_timebase_den = h->param.i_fps_num;
 669     }
 670
 671     h->param.rc.f_qcompress = x264_clip3f( h->param.rc.f_qcompress, 0.0, 1.0 );
 672     if( h->param.i_keyint_max == 1 || h->param.rc.f_qcompress == 1 )
 673         h->param.rc.b_mb_tree = 0;
 674     if( (!h->param.b_intra_refresh && h->param.i_keyint_max != X264_KEYINT_MAX_INFINITE) &&
 675         !h->param.rc.i_lookahead && h->param.rc.b_mb_tree )
 676     {
 677         x264_log( h, X264_LOG_WARNING, "lookaheadless mb-tree requires intra refresh or infinite keyint\n" );
 678         h->param.rc.b_mb_tree = 0;
 679     }
 680     if( h->param.rc.b_stat_read )
 681         h->param.rc.i_lookahead = 0;
 682 #if HAVE_THREAD
 683     if( h->param.i_sync_lookahead < 0 )
 684         h->param.i_sync_lookahead = h->param.i_bframe + 1;
 685     h->param.i_sync_lookahead = X264_MIN( h->param.i_sync_lookahead, X264_LOOKAHEAD_MAX );
 686     if( h->param.rc.b_stat_read || h->i_thread_frames == 1 )
 687         h->param.i_sync_lookahead = 0;
 688 #else
 689     h->param.i_sync_lookahead = 0;
 690 #endif
 691
 692     h->param.i_deblocking_filter_alphac0 = x264_clip3( h->param.i_deblocking_filter_alphac0, -6, 6 );
 693     h->param.i_deblocking_filter_beta    = x264_clip3( h->param.i_deblocking_filter_beta, -6, 6 );
 694     h->param.analyse.i_luma_deadzone[0] = x264_clip3( h->param.analyse.i_luma_deadzone[0], 0, 32 );
 695     h->param.analyse.i_luma_deadzone[1] = x264_clip3( h->param.analyse.i_luma_deadzone[1], 0, 32 );
 696
 697     h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, 0, 2 );
 698
 699     if( h->param.i_cqm_preset < X264_CQM_FLAT || h->param.i_cqm_preset > X264_CQM_CUSTOM )
 700         h->param.i_cqm_preset = X264_CQM_FLAT;
 701
 702     if( h->param.analyse.i_me_method < X264_ME_DIA ||
 703         h->param.analyse.i_me_method > X264_ME_TESA )
 704         h->param.analyse.i_me_method = X264_ME_HEX;
 705     h->param.analyse.i_me_range = x264_clip3( h->param.analyse.i_me_range, 4, 1024 );
 706     if( h->param.analyse.i_me_range > 16 && h->param.analyse.i_me_method <= X264_ME_HEX )
 707         h->param.analyse.i_me_range = 16;
 708     if( h->param.analyse.i_me_method == X264_ME_TESA &&
 709         (h->mb.b_lossless || h->param.analyse.i_subpel_refine <= 1) )
 710         h->param.analyse.i_me_method = X264_ME_ESA;
 711     h->param.analyse.b_mixed_references = h->param.analyse.b_mixed_references && h->param.i_frame_reference > 1;
 712     h->param.analyse.inter &= X264_ANALYSE_PSUB16x16|X264_ANALYSE_PSUB8x8|X264_ANALYSE_BSUB16x16|
 713                               X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
 714     h->param.analyse.intra &= X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
 715     if( !(h->param.analyse.inter & X264_ANALYSE_PSUB16x16) )
 716         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
 717     if( !h->param.analyse.b_transform_8x8 )
 718     {
 719         h->param.analyse.inter &= ~X264_ANALYSE_I8x8;
 720         h->param.analyse.intra &= ~X264_ANALYSE_I8x8;
 721     }
 722     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
 723     h->param.analyse.i_trellis = x264_clip3( h->param.analyse.i_trellis, 0, 2 );
 724     h->param.rc.i_aq_mode = x264_clip3( h->param.rc.i_aq_mode, 0, 2 );
 725     h->param.rc.f_aq_strength = x264_clip3f( h->param.rc.f_aq_strength, 0, 3 );
 726     if( h->param.rc.f_aq_strength == 0 )
 727         h->param.rc.i_aq_mode = 0;
 728
 729     if( h->param.i_log_level < X264_LOG_INFO )
 730     {
 731         h->param.analyse.b_psnr = 0;
 732         h->param.analyse.b_ssim = 0;
 733     }
 734     /* Warn users trying to measure PSNR/SSIM with psy opts on. */
 735     if( b_open && (h->param.analyse.b_psnr || h->param.analyse.b_ssim) )
 736     {
 737         char *s = NULL;
 738
 739         if( h->param.analyse.b_psy )
 740         {
 741             s = h->param.analyse.b_psnr ? "psnr" : "ssim";
 742             x264_log( h, X264_LOG_WARNING, "--%s used with psy on: results will be invalid!\n", s );
 743         }
 744         else if( !h->param.rc.i_aq_mode && h->param.analyse.b_ssim )
 745         {
 746             x264_log( h, X264_LOG_WARNING, "--ssim used with AQ off: results will be invalid!\n" );
 747             s = "ssim";
 748         }
 749         else if(  h->param.rc.i_aq_mode && h->param.analyse.b_psnr )
 750         {
 751             x264_log( h, X264_LOG_WARNING, "--psnr used with AQ on: results will be invalid!\n" );
 752             s = "psnr";
 753         }
 754         if( s )
 755             x264_log( h, X264_LOG_WARNING, "--tune %s should be used if attempting to benchmark %s!\n", s, s );
 756     }
 757
 758     if( !h->param.analyse.b_psy )
 759     {
 760         h->param.analyse.f_psy_rd = 0;
 761         h->param.analyse.f_psy_trellis = 0;
 762     }
 763     h->param.analyse.f_psy_rd = x264_clip3f( h->param.analyse.f_psy_rd, 0, 10 );
 764     h->param.analyse.f_psy_trellis = x264_clip3f( h->param.analyse.f_psy_trellis, 0, 10 );
 765     h->mb.i_psy_rd = h->param.analyse.i_subpel_refine >= 6 ? FIX8( h->param.analyse.f_psy_rd ) : 0;
 766     h->mb.i_psy_trellis = h->param.analyse.i_trellis ? FIX8( h->param.analyse.f_psy_trellis / 4 ) : 0;
 767     /* Psy RDO increases overall quantizers to improve the quality of luma--this indirectly hurts chroma quality */
 768     /* so we lower the chroma QP offset to compensate */
 769     if( b_open && h->mb.i_psy_rd )
 770         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_rd < 0.25 ? 1 : 2;
 771     /* Psy trellis has a similar effect. */
 772     if( b_open && h->mb.i_psy_trellis )
 773         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_trellis < 0.25 ? 1 : 2;
 774     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
 775     /* MB-tree requires AQ to be on, even if the strength is zero. */
 776     if( !h->param.rc.i_aq_mode && h->param.rc.b_mb_tree )
 777     {
 778         h->param.rc.i_aq_mode = 1;
 779         h->param.rc.f_aq_strength = 0;
 780     }
 781     h->param.analyse.i_noise_reduction = x264_clip3( h->param.analyse.i_noise_reduction, 0, 1<<16 );
 782     if( h->param.analyse.i_subpel_refine == 10 && (h->param.analyse.i_trellis != 2 || !h->param.rc.i_aq_mode) )
 783         h->param.analyse.i_subpel_refine = 9;
 784
 785     {
 786         const x264_level_t *l = x264_levels;
 787         if( h->param.i_level_idc < 0 )
 788         {
 789             int maxrate_bak = h->param.rc.i_vbv_max_bitrate;
 790             if( h->param.rc.i_rc_method == X264_RC_ABR && h->param.rc.i_vbv_buffer_size <= 0 )
 791                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate * 2;
 792             h->sps = h->sps_array;
 793             x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
 794             do h->param.i_level_idc = l->level_idc;
 795                 while( l[1].level_idc && x264_validate_levels( h, 0 ) && l++ );
 796             h->param.rc.i_vbv_max_bitrate = maxrate_bak;
 797         }
 798         else
 799         {
 800             while( l->level_idc && l->level_idc != h->param.i_level_idc )
 801                 l++;
 802             if( l->level_idc == 0 )
 803             {
 804                 x264_log( h, X264_LOG_ERROR, "invalid level_idc: %d\n", h->param.i_level_idc );
 805                 return -1;
 806             }
 807         }
 808         if( h->param.analyse.i_mv_range <= 0 )
 809             h->param.analyse.i_mv_range = l->mv_range >> PARAM_INTERLACED;
 810         else
 811             h->param.analyse.i_mv_range = x264_clip3(h->param.analyse.i_mv_range, 32, 512 >> PARAM_INTERLACED);
 812     }
 813
 814     h->param.analyse.i_weighted_pred = x264_clip3( h->param.analyse.i_weighted_pred, X264_WEIGHTP_NONE, X264_WEIGHTP_SMART );
 815
 816     if( PARAM_INTERLACED )
 817     {
 818         if( h->param.analyse.i_me_method >= X264_ME_ESA )
 819         {
 820             x264_log( h, X264_LOG_WARNING, "interlace + me=esa is not implemented\n" );
 821             h->param.analyse.i_me_method = X264_ME_UMH;
 822         }
 823         if( h->param.analyse.i_weighted_pred > 0 )
 824         {
 825             x264_log( h, X264_LOG_WARNING, "interlace + weightp is not implemented\n" );
 826             h->param.analyse.i_weighted_pred = X264_WEIGHTP_NONE;
 827         }
 828     }
 829
 830     if( !h->param.analyse.i_weighted_pred && h->param.rc.b_mb_tree && h->param.analyse.b_psy )
 831         h->param.analyse.i_weighted_pred = X264_WEIGHTP_FAKE;
 832
 833     if( h->i_thread_frames > 1 )
 834     {
 835         int r = h->param.analyse.i_mv_range_thread;
 836         int r2;
 837         if( r <= 0 )
 838         {
 839             // half of the available space is reserved and divided evenly among the threads,
 840             // the rest is allocated to whichever thread is far enough ahead to use it.
 841             // reserving more space increases quality for some videos, but costs more time
 842             // in thread synchronization.
 843             int max_range = (h->param.i_height + X264_THREAD_HEIGHT) / h->i_thread_frames - X264_THREAD_HEIGHT;
 844             r = max_range / 2;
 845         }
 846         r = X264_MAX( r, h->param.analyse.i_me_range );
 847         r = X264_MIN( r, h->param.analyse.i_mv_range );
 848         // round up to use the whole mb row
 849         r2 = (r & ~15) + ((-X264_THREAD_HEIGHT) & 15);
 850         if( r2 < r )
 851             r2 += 16;
 852         x264_log( h, X264_LOG_DEBUG, "using mv_range_thread = %d\n", r2 );
 853         h->param.analyse.i_mv_range_thread = r2;
 854     }
 855
 856     if( h->param.rc.f_rate_tolerance < 0 )
 857         h->param.rc.f_rate_tolerance = 0;
 858     if( h->param.rc.f_qblur < 0 )
 859         h->param.rc.f_qblur = 0;
 860     if( h->param.rc.f_complexity_blur < 0 )
 861         h->param.rc.f_complexity_blur = 0;
 862
 863     h->param.i_sps_id &= 31;
 864
 865     if( PARAM_INTERLACED )
 866         h->param.b_pic_struct = 1;
 867
 868     h->param.i_nal_hrd = x264_clip3( h->param.i_nal_hrd, X264_NAL_HRD_NONE, X264_NAL_HRD_CBR );
 869
 870     if( h->param.i_nal_hrd && !h->param.rc.i_vbv_buffer_size )
 871     {
 872         x264_log( h, X264_LOG_WARNING, "NAL HRD parameters require VBV parameters\n" );
 873         h->param.i_nal_hrd = X264_NAL_HRD_NONE;
 874     }
 875
 876     if( h->param.i_nal_hrd == X264_NAL_HRD_CBR &&
 877        (h->param.rc.i_bitrate != h->param.rc.i_vbv_max_bitrate || !h->param.rc.i_vbv_max_bitrate) )
 878     {
 879         x264_log( h, X264_LOG_WARNING, "CBR HRD requires constant bitrate\n" );
 880         h->param.i_nal_hrd = X264_NAL_HRD_VBR;
 881     }
 882
 883     /* ensure the booleans are 0 or 1 so they can be used in math */
 884 #define BOOLIFY(x) h->param.x = !!h->param.x
 885     BOOLIFY( b_cabac );
 886     BOOLIFY( b_constrained_intra );
 887     BOOLIFY( b_deblocking_filter );
 888     BOOLIFY( b_deterministic );
 889     BOOLIFY( b_sliced_threads );
 890     BOOLIFY( b_interlaced );
 891     BOOLIFY( b_intra_refresh );
 892     BOOLIFY( b_visualize );
 893     BOOLIFY( b_aud );
 894     BOOLIFY( b_repeat_headers );
 895     BOOLIFY( b_annexb );
 896     BOOLIFY( b_vfr_input );
 897     BOOLIFY( b_pulldown );
 898     BOOLIFY( b_tff );
 899     BOOLIFY( b_pic_struct );
 900     BOOLIFY( b_fake_interlaced );
 901     BOOLIFY( b_open_gop );
 902     BOOLIFY( b_bluray_compat );
 903     BOOLIFY( analyse.b_transform_8x8 );
 904     BOOLIFY( analyse.b_weighted_bipred );
 905     BOOLIFY( analyse.b_chroma_me );
 906     BOOLIFY( analyse.b_mixed_references );
 907     BOOLIFY( analyse.b_fast_pskip );
 908     BOOLIFY( analyse.b_dct_decimate );
 909     BOOLIFY( analyse.b_psy );
 910     BOOLIFY( analyse.b_psnr );
 911     BOOLIFY( analyse.b_ssim );
 912     BOOLIFY( rc.b_stat_write );
 913     BOOLIFY( rc.b_stat_read );
 914     BOOLIFY( rc.b_mb_tree );
 915 #undef BOOLIFY
 916
 917     return 0;
 918 }
 919
 920 static void mbcmp_init( x264_t *h )
 921 {
 922     int satd = !h->mb.b_lossless && h->param.analyse.i_subpel_refine > 1;
 923     memcpy( h->pixf.mbcmp, satd ? h->pixf.satd : h->pixf.sad_aligned, sizeof(h->pixf.mbcmp) );
 924     memcpy( h->pixf.mbcmp_unaligned, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.mbcmp_unaligned) );
 925     h->pixf.intra_mbcmp_x3_16x16 = satd ? h->pixf.intra_satd_x3_16x16 : h->pixf.intra_sad_x3_16x16;
 926     h->pixf.intra_mbcmp_x3_8x8c = satd ? h->pixf.intra_satd_x3_8x8c : h->pixf.intra_sad_x3_8x8c;
 927     h->pixf.intra_mbcmp_x3_8x8 = satd ? h->pixf.intra_sa8d_x3_8x8 : h->pixf.intra_sad_x3_8x8;
 928     h->pixf.intra_mbcmp_x3_4x4 = satd ? h->pixf.intra_satd_x3_4x4 : h->pixf.intra_sad_x3_4x4;
 929     satd &= h->param.analyse.i_me_method == X264_ME_TESA;
 930     memcpy( h->pixf.fpelcmp, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.fpelcmp) );
 931     memcpy( h->pixf.fpelcmp_x3, satd ? h->pixf.satd_x3 : h->pixf.sad_x3, sizeof(h->pixf.fpelcmp_x3) );
 932     memcpy( h->pixf.fpelcmp_x4, satd ? h->pixf.satd_x4 : h->pixf.sad_x4, sizeof(h->pixf.fpelcmp_x4) );
 933 }
 934
 935 static void x264_set_aspect_ratio( x264_t *h, x264_param_t *param, int initial )
 936 {
 937     /* VUI */
 938     if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
 939     {
 940         uint32_t i_w = param->vui.i_sar_width;
 941         uint32_t i_h = param->vui.i_sar_height;
 942         uint32_t old_w = h->param.vui.i_sar_width;
 943         uint32_t old_h = h->param.vui.i_sar_height;
 944
 945         x264_reduce_fraction( &i_w, &i_h );
 946
 947         while( i_w > 65535 || i_h > 65535 )
 948         {
 949             i_w /= 2;
 950             i_h /= 2;
 951         }
 952
 953         x264_reduce_fraction( &i_w, &i_h );
 954
 955         if( i_w != old_w || i_h != old_h || initial )
 956         {
 957             h->param.vui.i_sar_width = 0;
 958             h->param.vui.i_sar_height = 0;
 959             if( i_w == 0 || i_h == 0 )
 960                 x264_log( h, X264_LOG_WARNING, "cannot create valid sample aspect ratio\n" );
 961             else
 962             {
 963                 x264_log( h, initial?X264_LOG_INFO:X264_LOG_DEBUG, "using SAR=%d/%d\n", i_w, i_h );
 964                 h->param.vui.i_sar_width = i_w;
 965                 h->param.vui.i_sar_height = i_h;
 966             }
 967             x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
 968         }
 969     }
 970 }
 971
 972 /****************************************************************************
 973  * x264_encoder_open:
 974  ****************************************************************************/
 975 x264_t *x264_encoder_open( x264_param_t *param )
 976 {
 977     x264_t *h;
 978     char buf[1000], *p;
 979     int qp, i_slicetype_length;
 980
 981     CHECKED_MALLOCZERO( h, sizeof(x264_t) );
 982
 983     /* Create a copy of param */
 984     memcpy( &h->param, param, sizeof(x264_param_t) );
 985
 986     if( param->param_free )
 987         param->param_free( param );
 988
 989     if( x264_threading_init() )
 990     {
 991         x264_log( h, X264_LOG_ERROR, "unable to initialize threading\n" );
 992         goto fail;
 993     }
 994
 995     if( x264_validate_parameters( h, 1 ) < 0 )
 996         goto fail;
 997
 998     if( h->param.psz_cqm_file )
 999         if( x264_cqm_parse_file( h, h->param.psz_cqm_file ) < 0 )
1000             goto fail;
1001
1002     if( h->param.rc.psz_stat_out )
1003         h->param.rc.psz_stat_out = strdup( h->param.rc.psz_stat_out );
1004     if( h->param.rc.psz_stat_in )
1005         h->param.rc.psz_stat_in = strdup( h->param.rc.psz_stat_in );
1006
1007     x264_reduce_fraction( &h->param.i_fps_num, &h->param.i_fps_den );
1008     x264_reduce_fraction( &h->param.i_timebase_num, &h->param.i_timebase_den );
1009
1010     /* Init x264_t */
1011     h->i_frame = -1;
1012     h->i_frame_num = 0;
1013     h->i_idr_pic_id = 0;
1014
1015     if( (uint64_t)h->param.i_timebase_den * 2 > UINT32_MAX )
1016     {
1017         x264_log( h, X264_LOG_ERROR, "Effective timebase denominator %u exceeds H.264 maximum\n", h->param.i_timebase_den );
1018         goto fail;
1019     }
1020
1021     h->sps = &h->sps_array[0];
1022     x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
1023
1024     h->pps = &h->pps_array[0];
1025     x264_pps_init( h->pps, h->param.i_sps_id, &h->param, h->sps );
1026
1027     x264_set_aspect_ratio( h, &h->param, 1 );
1028
1029     x264_validate_levels( h, 1 );
1030
1031     h->chroma_qp_table = i_chroma_qp_table + 12 + h->pps->i_chroma_qp_index_offset;
1032
1033     if( x264_cqm_init( h ) < 0 )
1034         goto fail;
1035
1036     h->mb.i_mb_width = h->sps->i_mb_width;
1037     h->mb.i_mb_height = h->sps->i_mb_height;
1038     h->mb.i_mb_count = h->mb.i_mb_width * h->mb.i_mb_height;
1039     /* Adaptive MBAFF and subme 0 are not supported as we require halving motion
1040      * vectors during prediction, resulting in hpel mvs.
1041      * The chosen solution is to make MBAFF non-adaptive in this case. */
1042     h->mb.b_adaptive_mbaff = PARAM_INTERLACED && h->param.analyse.i_subpel_refine;
1043
1044     /* Init frames. */
1045     if( h->param.i_bframe_adaptive == X264_B_ADAPT_TRELLIS && !h->param.rc.b_stat_read )
1046         h->frames.i_delay = X264_MAX(h->param.i_bframe,3)*4;
1047     else
1048         h->frames.i_delay = h->param.i_bframe;
1049     if( h->param.rc.b_mb_tree || h->param.rc.i_vbv_buffer_size )
1050         h->frames.i_delay = X264_MAX( h->frames.i_delay, h->param.rc.i_lookahead );
1051     i_slicetype_length = h->frames.i_delay;
1052     h->frames.i_delay += h->i_thread_frames - 1;
1053     h->frames.i_delay += h->param.i_sync_lookahead;
1054     h->frames.i_delay += h->param.b_vfr_input;
1055     h->frames.i_bframe_delay = h->param.i_bframe ? (h->param.i_bframe_pyramid ? 2 : 1) : 0;
1056
1057     h->frames.i_max_ref0 = h->param.i_frame_reference;
1058     h->frames.i_max_ref1 = X264_MIN( h->sps->vui.i_num_reorder_frames, h->param.i_frame_reference );
1059     h->frames.i_max_dpb  = h->sps->vui.i_max_dec_frame_buffering;
1060     h->frames.b_have_lowres = !h->param.rc.b_stat_read
1061         && ( h->param.rc.i_rc_method == X264_RC_ABR
1062           || h->param.rc.i_rc_method == X264_RC_CRF
1063           || h->param.i_bframe_adaptive
1064           || h->param.i_scenecut_threshold
1065           || h->param.rc.b_mb_tree
1066           || h->param.analyse.i_weighted_pred );
1067     h->frames.b_have_lowres |= h->param.rc.b_stat_read && h->param.rc.i_vbv_buffer_size > 0;
1068     h->frames.b_have_sub8x8_esa = !!(h->param.analyse.inter & X264_ANALYSE_PSUB8x8);
1069
1070     h->frames.i_last_idr =
1071     h->frames.i_last_keyframe = - h->param.i_keyint_max;
1072     h->frames.i_input    = 0;
1073     h->frames.i_largest_pts = h->frames.i_second_largest_pts = -1;
1074     h->frames.i_poc_last_open_gop = -1;
1075
1076     CHECKED_MALLOCZERO( h->frames.unused[0], (h->frames.i_delay + 3) * sizeof(x264_frame_t *) );
1077     /* Allocate room for max refs plus a few extra just in case. */
1078     CHECKED_MALLOCZERO( h->frames.unused[1], (h->i_thread_frames + X264_REF_MAX + 4) * sizeof(x264_frame_t *) );
1079     CHECKED_MALLOCZERO( h->frames.current, (h->param.i_sync_lookahead + h->param.i_bframe
1080                         + h->i_thread_frames + 3) * sizeof(x264_frame_t *) );
1081     if( h->param.analyse.i_weighted_pred > 0 )
1082         CHECKED_MALLOCZERO( h->frames.blank_unused, h->i_thread_frames * 4 * sizeof(x264_frame_t *) );
1083     h->i_ref[0] = h->i_ref[1] = 0;
1084     h->i_cpb_delay = h->i_coded_fields = h->i_disp_fields = 0;
1085     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);
1086     h->i_disp_fields_last_frame = -1;
1087     x264_rdo_init();
1088
1089     /* init CPU functions */
1090     x264_predict_16x16_init( h->param.cpu, h->predict_16x16 );
1091     x264_predict_8x8c_init( h->param.cpu, h->predict_8x8c );
1092     x264_predict_8x8_init( h->param.cpu, h->predict_8x8, &h->predict_8x8_filter );
1093     x264_predict_4x4_init( h->param.cpu, h->predict_4x4 );
1094     if( h->param.b_cabac )
1095         x264_cabac_init();
1096     else
1097         x264_cavlc_init();
1098     x264_pixel_init( h->param.cpu, &h->pixf );
1099     x264_dct_init( h->param.cpu, &h->dctf );
1100     x264_zigzag_init( h->param.cpu, &h->zigzagf_progressive, &h->zigzagf_interlaced );
1101     memcpy( &h->zigzagf, PARAM_INTERLACED ? &h->zigzagf_interlaced : &h->zigzagf_progressive, sizeof(h->zigzagf) );
1102     x264_mc_init( h->param.cpu, &h->mc );
1103     x264_quant_init( h, h->param.cpu, &h->quantf );
1104     x264_deblock_init( h->param.cpu, &h->loopf, PARAM_INTERLACED );
1105     x264_bitstream_init( h->param.cpu, &h->bsf );
1106     x264_dct_init_weights();
1107
1108     mbcmp_init( h );
1109
1110     p = buf + sprintf( buf, "using cpu capabilities:" );
1111     for( int i = 0; x264_cpu_names[i].flags; i++ )
1112     {
1113         if( !strcmp(x264_cpu_names[i].name, "SSE2")
1114             && h->param.cpu & (X264_CPU_SSE2_IS_FAST|X264_CPU_SSE2_IS_SLOW) )
1115             continue;
1116         if( !strcmp(x264_cpu_names[i].name, "SSE3")
1117             && (h->param.cpu & X264_CPU_SSSE3 || !(h->param.cpu & X264_CPU_CACHELINE_64)) )
1118             continue;
1119         if( !strcmp(x264_cpu_names[i].name, "SSE4.1")
1120             && (h->param.cpu & X264_CPU_SSE42) )
1121             continue;
1122         if( (h->param.cpu & x264_cpu_names[i].flags) == x264_cpu_names[i].flags
1123             && (!i || x264_cpu_names[i].flags != x264_cpu_names[i-1].flags) )
1124             p += sprintf( p, " %s", x264_cpu_names[i].name );
1125     }
1126     if( !h->param.cpu )
1127         p += sprintf( p, " none!" );
1128     x264_log( h, X264_LOG_INFO, "%s\n", buf );
1129
1130     float *logs = x264_analyse_prepare_costs( h );
1131     if( !logs )
1132         goto fail;
1133     for( qp = X264_MIN( h->param.rc.i_qp_min, QP_MAX_SPEC ); qp <= h->param.rc.i_qp_max; qp++ )
1134         if( x264_analyse_init_costs( h, logs, qp ) )
1135             goto fail;
1136     if( x264_analyse_init_costs( h, logs, X264_LOOKAHEAD_QP ) )
1137         goto fail;
1138     x264_free( logs );
1139
1140     static const uint16_t cost_mv_correct[7] = { 24, 47, 95, 189, 379, 757, 1515 };
1141     /* Checks for known miscompilation issues. */
1142     if( h->cost_mv[X264_LOOKAHEAD_QP][2013] != cost_mv_correct[BIT_DEPTH-8] )
1143     {
1144         x264_log( h, X264_LOG_ERROR, "MV cost test failed: x264 has been miscompiled!\n" );
1145         goto fail;
1146     }
1147
1148     /* Must be volatile or else GCC will optimize it out. */
1149     volatile int temp = 392;
1150     if( x264_clz( temp ) != 23 )
1151     {
1152         x264_log( h, X264_LOG_ERROR, "CLZ test failed: x264 has been miscompiled!\n" );
1153 #if ARCH_X86 || ARCH_X86_64
1154         x264_log( h, X264_LOG_ERROR, "Are you attempting to run an SSE4a-targeted build on a CPU that\n" );
1155         x264_log( h, X264_LOG_ERROR, "doesn't support it?\n" );
1156 #endif
1157         goto fail;
1158     }
1159
1160     h->out.i_nal = 0;
1161     h->out.i_bitstream = X264_MAX( 1000000, h->param.i_width * h->param.i_height * 4
1162         * ( h->param.rc.i_rc_method == X264_RC_ABR ? pow( 0.95, h->param.rc.i_qp_min )
1163           : pow( 0.95, h->param.rc.i_qp_constant ) * X264_MAX( 1, h->param.rc.f_ip_factor )));
1164
1165     h->nal_buffer_size = h->out.i_bitstream * 3/2 + 4;
1166     CHECKED_MALLOC( h->nal_buffer, h->nal_buffer_size );
1167
1168     if( h->param.i_threads > 1 &&
1169         x264_threadpool_init( &h->threadpool, h->param.i_threads, (void*)x264_encoder_thread_init, h ) )
1170         goto fail;
1171
1172     h->thread[0] = h;
1173     for( int i = 1; i < h->param.i_threads + !!h->param.i_sync_lookahead; i++ )
1174         CHECKED_MALLOC( h->thread[i], sizeof(x264_t) );
1175
1176     for( int i = 0; i < h->param.i_threads; i++ )
1177     {
1178         int init_nal_count = h->param.i_slice_count + 3;
1179         int allocate_threadlocal_data = !h->param.b_sliced_threads || !i;
1180         if( i > 0 )
1181             *h->thread[i] = *h;
1182
1183         if( allocate_threadlocal_data )
1184         {
1185             h->thread[i]->fdec = x264_frame_pop_unused( h, 1 );
1186             if( !h->thread[i]->fdec )
1187                 goto fail;
1188         }
1189         else
1190             h->thread[i]->fdec = h->thread[0]->fdec;
1191
1192         h->thread[i]->sps = &h->thread[i]->sps_array[0];
1193         h->thread[i]->pps = &h->thread[i]->pps_array[0];
1194
1195         CHECKED_MALLOC( h->thread[i]->out.p_bitstream, h->out.i_bitstream );
1196         /* Start each thread with room for init_nal_count NAL units; it'll realloc later if needed. */
1197         CHECKED_MALLOC( h->thread[i]->out.nal, init_nal_count*sizeof(x264_nal_t) );
1198         h->thread[i]->out.i_nals_allocated = init_nal_count;
1199
1200         if( allocate_threadlocal_data && x264_macroblock_cache_allocate( h->thread[i] ) < 0 )
1201             goto fail;
1202     }
1203
1204     if( x264_lookahead_init( h, i_slicetype_length ) )
1205         goto fail;
1206
1207     for( int i = 0; i < h->param.i_threads; i++ )
1208         if( x264_macroblock_thread_allocate( h->thread[i], 0 ) < 0 )
1209             goto fail;
1210
1211     if( x264_ratecontrol_new( h ) < 0 )
1212         goto fail;
1213
1214     if( h->param.i_nal_hrd )
1215     {
1216         x264_log( h, X264_LOG_DEBUG, "HRD bitrate: %i bits/sec\n", h->sps->vui.hrd.i_bit_rate_unscaled );
1217         x264_log( h, X264_LOG_DEBUG, "CPB size: %i bits\n", h->sps->vui.hrd.i_cpb_size_unscaled );
1218     }
1219
1220     if( h->param.psz_dump_yuv )
1221     {
1222         /* create or truncate the reconstructed video file */
1223         FILE *f = fopen( h->param.psz_dump_yuv, "w" );
1224         if( !f )
1225         {
1226             x264_log( h, X264_LOG_ERROR, "dump_yuv: can't write to %s\n", h->param.psz_dump_yuv );
1227             goto fail;
1228         }
1229         else if( !x264_is_regular_file( f ) )
1230         {
1231             x264_log( h, X264_LOG_ERROR, "dump_yuv: incompatible with non-regular file %s\n", h->param.psz_dump_yuv );
1232             goto fail;
1233         }
1234         fclose( f );
1235     }
1236
1237     const char *profile = h->sps->i_profile_idc == PROFILE_BASELINE ? "Constrained Baseline" :
1238                           h->sps->i_profile_idc == PROFILE_MAIN ? "Main" :
1239                           h->sps->i_profile_idc == PROFILE_HIGH ? "High" :
1240                           h->sps->i_profile_idc == PROFILE_HIGH10 ? (h->sps->b_constraint_set3 == 1 ? "High 10 Intra" : "High 10") :
1241                           "High 4:4:4 Predictive";
1242     char level[4];
1243     snprintf( level, sizeof(level), "%d.%d", h->sps->i_level_idc/10, h->sps->i_level_idc%10 );
1244     if( h->sps->i_level_idc == 9 || ( h->sps->i_level_idc == 11 && h->sps->b_constraint_set3 ) )
1245         strcpy( level, "1b" );
1246
1247     if( h->sps->i_profile_idc < PROFILE_HIGH10 )
1248     {
1249         x264_log( h, X264_LOG_INFO, "profile %s, level %s\n",
1250             profile, level );
1251     }
1252     else
1253     {
1254         x264_log( h, X264_LOG_INFO, "profile %s, level %s, bit depth %d\n",
1255             profile, level, BIT_DEPTH );
1256     }
1257
1258     return h;
1259 fail:
1260     x264_free( h );
1261     return NULL;
1262 }
1263
1264 /****************************************************************************
1265  * x264_encoder_reconfig:
1266  ****************************************************************************/
1267 int x264_encoder_reconfig( x264_t *h, x264_param_t *param )
1268 {
1269     int rc_reconfig = 0;
1270     h = h->thread[h->thread[0]->i_thread_phase];
1271     x264_set_aspect_ratio( h, param, 0 );
1272 #define COPY(var) h->param.var = param->var
1273     COPY( i_frame_reference ); // but never uses more refs than initially specified
1274     COPY( i_bframe_bias );
1275     if( h->param.i_scenecut_threshold )
1276         COPY( i_scenecut_threshold ); // can't turn it on or off, only vary the threshold
1277     COPY( b_deblocking_filter );
1278     COPY( i_deblocking_filter_alphac0 );
1279     COPY( i_deblocking_filter_beta );
1280     COPY( i_frame_packing );
1281     COPY( analyse.inter );
1282     COPY( analyse.intra );
1283     COPY( analyse.i_direct_mv_pred );
1284     /* Scratch buffer prevents me_range from being increased for esa/tesa */
1285     if( h->param.analyse.i_me_method < X264_ME_ESA || param->analyse.i_me_range < h->param.analyse.i_me_range )
1286         COPY( analyse.i_me_range );
1287     COPY( analyse.i_noise_reduction );
1288     /* We can't switch out of subme=0 during encoding. */
1289     if( h->param.analyse.i_subpel_refine )
1290         COPY( analyse.i_subpel_refine );
1291     COPY( analyse.i_trellis );
1292     COPY( analyse.b_chroma_me );
1293     COPY( analyse.b_dct_decimate );
1294     COPY( analyse.b_fast_pskip );
1295     COPY( analyse.b_mixed_references );
1296     COPY( analyse.f_psy_rd );
1297     COPY( analyse.f_psy_trellis );
1298     COPY( crop_rect );
1299     // can only twiddle these if they were enabled to begin with:
1300     if( h->param.analyse.i_me_method >= X264_ME_ESA || param->analyse.i_me_method < X264_ME_ESA )
1301         COPY( analyse.i_me_method );
1302     if( h->param.analyse.i_me_method >= X264_ME_ESA && !h->frames.b_have_sub8x8_esa )
1303         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
1304     if( h->pps->b_transform_8x8_mode )
1305         COPY( analyse.b_transform_8x8 );
1306     if( h->frames.i_max_ref1 > 1 )
1307         COPY( i_bframe_pyramid );
1308     COPY( i_slice_max_size );
1309     COPY( i_slice_max_mbs );
1310     COPY( i_slice_count );
1311     COPY( b_tff );
1312
1313     /* VBV can't be turned on if it wasn't on to begin with */
1314     if( h->param.rc.i_vbv_max_bitrate > 0 && h->param.rc.i_vbv_buffer_size > 0 &&
1315           param->rc.i_vbv_max_bitrate > 0 &&   param->rc.i_vbv_buffer_size > 0 )
1316     {
1317         rc_reconfig |= h->param.rc.i_vbv_max_bitrate != param->rc.i_vbv_max_bitrate;
1318         rc_reconfig |= h->param.rc.i_vbv_buffer_size != param->rc.i_vbv_buffer_size;
1319         rc_reconfig |= h->param.rc.i_bitrate != param->rc.i_bitrate;
1320         COPY( rc.i_vbv_max_bitrate );
1321         COPY( rc.i_vbv_buffer_size );
1322         COPY( rc.i_bitrate );
1323     }
1324     rc_reconfig |= h->param.rc.f_rf_constant != param->rc.f_rf_constant;
1325     rc_reconfig |= h->param.rc.f_rf_constant_max != param->rc.f_rf_constant_max;
1326     COPY( rc.f_rf_constant );
1327     COPY( rc.f_rf_constant_max );
1328 #undef COPY
1329
1330     mbcmp_init( h );
1331
1332     int ret = x264_validate_parameters( h, 0 );
1333
1334     /* Supported reconfiguration options (1-pass only):
1335      * vbv-maxrate
1336      * vbv-bufsize
1337      * crf
1338      * bitrate (CBR only) */
1339     if( !ret && rc_reconfig )
1340         x264_ratecontrol_init_reconfigurable( h, 0 );
1341
1342     return ret;
1343 }
1344
1345 /****************************************************************************
1346  * x264_encoder_parameters:
1347  ****************************************************************************/
1348 void x264_encoder_parameters( x264_t *h, x264_param_t *param )
1349 {
1350     memcpy( param, &h->thread[h->i_thread_phase]->param, sizeof(x264_param_t) );
1351 }
1352
1353 /* internal usage */
1354 static void x264_nal_start( x264_t *h, int i_type, int i_ref_idc )
1355 {
1356     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1357
1358     nal->i_ref_idc        = i_ref_idc;
1359     nal->i_type           = i_type;
1360     nal->b_long_startcode = 1;
1361
1362     nal->i_payload= 0;
1363     nal->p_payload= &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8];
1364 }
1365
1366 /* if number of allocated nals is not enough, re-allocate a larger one. */
1367 static int x264_nal_check_buffer( x264_t *h )
1368 {
1369     if( h->out.i_nal >= h->out.i_nals_allocated )
1370     {
1371         x264_nal_t *new_out = x264_malloc( sizeof(x264_nal_t) * (h->out.i_nals_allocated*2) );
1372         if( !new_out )
1373             return -1;
1374         memcpy( new_out, h->out.nal, sizeof(x264_nal_t) * (h->out.i_nals_allocated) );
1375         x264_free( h->out.nal );
1376         h->out.nal = new_out;
1377         h->out.i_nals_allocated *= 2;
1378     }
1379     return 0;
1380 }
1381
1382 static int x264_nal_end( x264_t *h )
1383 {
1384     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1385     nal->i_payload = &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8] - nal->p_payload;
1386     if( h->param.nalu_process )
1387         h->param.nalu_process( h, nal );
1388     h->out.i_nal++;
1389
1390     return x264_nal_check_buffer( h );
1391 }
1392
1393 static int x264_encoder_encapsulate_nals( x264_t *h, int start )
1394 {
1395     int nal_size = 0, previous_nal_size = 0;
1396
1397     if( h->param.nalu_process )
1398     {
1399         for( int i = start; i < h->out.i_nal; i++ )
1400             nal_size += h->out.nal[i].i_payload;
1401         return nal_size;
1402     }
1403
1404     for( int i = 0; i < start; i++ )
1405         previous_nal_size += h->out.nal[i].i_payload;
1406
1407     for( int i = start; i < h->out.i_nal; i++ )
1408         nal_size += h->out.nal[i].i_payload;
1409
1410     /* Worst-case NAL unit escaping: reallocate the buffer if it's too small. */
1411     int necessary_size = nal_size * 3/2 + h->out.i_nal * 4;
1412     if( h->nal_buffer_size < necessary_size )
1413     {
1414         h->nal_buffer_size = necessary_size * 2;
1415         uint8_t *buf = x264_malloc( h->nal_buffer_size );
1416         if( !buf )
1417             return -1;
1418         if( previous_nal_size )
1419             memcpy( buf, h->nal_buffer, previous_nal_size );
1420         x264_free( h->nal_buffer );
1421         h->nal_buffer = buf;
1422     }
1423
1424     uint8_t *nal_buffer = h->nal_buffer + previous_nal_size;
1425
1426     for( int i = start; i < h->out.i_nal; i++ )
1427     {
1428         h->out.nal[i].b_long_startcode = !i || h->out.nal[i].i_type == NAL_SPS || h->out.nal[i].i_type == NAL_PPS;
1429         x264_nal_encode( h, nal_buffer, &h->out.nal[i] );
1430         nal_buffer += h->out.nal[i].i_payload;
1431     }
1432
1433     x264_emms();
1434
1435     return nal_buffer - (h->nal_buffer + previous_nal_size);
1436 }
1437
1438 /****************************************************************************
1439  * x264_encoder_headers:
1440  ****************************************************************************/
1441 int x264_encoder_headers( x264_t *h, x264_nal_t **pp_nal, int *pi_nal )
1442 {
1443     int frame_size = 0;
1444     /* init bitstream context */
1445     h->out.i_nal = 0;
1446     bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
1447
1448     /* Write SEI, SPS and PPS. */
1449
1450     /* generate sequence parameters */
1451     x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
1452     x264_sps_write( &h->out.bs, h->sps );
1453     if( x264_nal_end( h ) )
1454         return -1;
1455
1456     /* generate picture parameters */
1457     x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
1458     x264_pps_write( &h->out.bs, h->pps );
1459     if( x264_nal_end( h ) )
1460         return -1;
1461
1462     /* identify ourselves */
1463     x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
1464     if( x264_sei_version_write( h, &h->out.bs ) )
1465         return -1;
1466     if( x264_nal_end( h ) )
1467         return -1;
1468
1469     frame_size = x264_encoder_encapsulate_nals( h, 0 );
1470     if( frame_size < 0 )
1471         return -1;
1472
1473     /* now set output*/
1474     *pi_nal = h->out.i_nal;
1475     *pp_nal = &h->out.nal[0];
1476     h->out.i_nal = 0;
1477
1478     return frame_size;
1479 }
1480
1481 /* Check to see whether we have chosen a reference list ordering different
1482  * from the standard's default. */
1483 static inline void x264_reference_check_reorder( x264_t *h )
1484 {
1485     /* The reorder check doesn't check for missing frames, so just
1486      * force a reorder if one of the reference list is corrupt. */
1487     for( int i = 0; h->frames.reference[i]; i++ )
1488         if( h->frames.reference[i]->b_corrupt )
1489         {
1490             h->b_ref_reorder[0] = 1;
1491             return;
1492         }
1493     for( int list = 0; list <= (h->sh.i_type == SLICE_TYPE_B); list++ )
1494         for( int i = 0; i < h->i_ref[list] - 1; i++ )
1495         {
1496             int framenum_diff = h->fref[list][i+1]->i_frame_num - h->fref[list][i]->i_frame_num;
1497             int poc_diff = h->fref[list][i+1]->i_poc - h->fref[list][i]->i_poc;
1498             /* P and B-frames use different default orders. */
1499             if( h->sh.i_type == SLICE_TYPE_P ? framenum_diff > 0 : list == 1 ? poc_diff < 0 : poc_diff > 0 )
1500             {
1501                 h->b_ref_reorder[list] = 1;
1502                 return;
1503             }
1504         }
1505 }
1506
1507 /* return -1 on failure, else return the index of the new reference frame */
1508 int x264_weighted_reference_duplicate( x264_t *h, int i_ref, const x264_weight_t *w )
1509 {
1510     int i = h->i_ref[0];
1511     int j = 1;
1512     x264_frame_t *newframe;
1513     if( i <= 1 ) /* empty list, definitely can't duplicate frame */
1514         return -1;
1515
1516     //Duplication is only used in X264_WEIGHTP_SMART
1517     if( h->param.analyse.i_weighted_pred != X264_WEIGHTP_SMART )
1518         return -1;
1519
1520     /* Duplication is a hack to compensate for crappy rounding in motion compensation.
1521      * With high bit depth, it's not worth doing, so turn it off except in the case of
1522      * unweighted dupes. */
1523     if( BIT_DEPTH > 8 && w != weight_none )
1524         return -1;
1525
1526     newframe = x264_frame_pop_blank_unused( h );
1527     if( !newframe )
1528         return -1;
1529
1530     //FIXME: probably don't need to copy everything
1531     *newframe = *h->fref[0][i_ref];
1532     newframe->i_reference_count = 1;
1533     newframe->orig = h->fref[0][i_ref];
1534     newframe->b_duplicate = 1;
1535     memcpy( h->fenc->weight[j], w, sizeof(h->fenc->weight[i]) );
1536
1537     /* shift the frames to make space for the dupe. */
1538     h->b_ref_reorder[0] = 1;
1539     if( h->i_ref[0] < X264_REF_MAX )
1540         ++h->i_ref[0];
1541     h->fref[0][X264_REF_MAX-1] = NULL;
1542     x264_frame_unshift( &h->fref[0][j], newframe );
1543
1544     return j;
1545 }
1546
1547 static void x264_weighted_pred_init( x264_t *h )
1548 {
1549     /* for now no analysis and set all weights to nothing */
1550     for( int i_ref = 0; i_ref < h->i_ref[0]; i_ref++ )
1551         h->fenc->weighted[i_ref] = h->fref[0][i_ref]->filtered[0];
1552
1553     // FIXME: This only supports weighting of one reference frame
1554     // and duplicates of that frame.
1555     h->fenc->i_lines_weighted = 0;
1556
1557     for( int i_ref = 0; i_ref < (h->i_ref[0] << SLICE_MBAFF); i_ref++ )
1558         for( int i = 0; i < 3; i++ )
1559             h->sh.weight[i_ref][i].weightfn = NULL;
1560
1561
1562     if( h->sh.i_type != SLICE_TYPE_P || h->param.analyse.i_weighted_pred <= 0 )
1563         return;
1564
1565     int i_padv = PADV << PARAM_INTERLACED;
1566     int denom = -1;
1567     int weightplane[2] = { 0, 0 };
1568     int buffer_next = 0;
1569     for( int i = 0; i < 3; i++ )
1570     {
1571         for( int j = 0; j < h->i_ref[0]; j++ )
1572         {
1573             if( h->fenc->weight[j][i].weightfn )
1574             {
1575                 h->sh.weight[j][i] = h->fenc->weight[j][i];
1576                 // if weight is useless, don't write it to stream
1577                 if( h->sh.weight[j][i].i_scale == 1<<h->sh.weight[j][i].i_denom && h->sh.weight[j][i].i_offset == 0 )
1578                     h->sh.weight[j][i].weightfn = NULL;
1579                 else
1580                 {
1581                     if( !weightplane[!!i] )
1582                     {
1583                         weightplane[!!i] = 1;
1584                         h->sh.weight[0][!!i].i_denom = denom = h->sh.weight[j][i].i_denom;
1585                         assert( x264_clip3( denom, 0, 7 ) == denom );
1586                     }
1587
1588                     assert( h->sh.weight[j][i].i_denom == denom );
1589                     if( !i )
1590                     {
1591                         h->fenc->weighted[j] = h->mb.p_weight_buf[buffer_next++] + h->fenc->i_stride[0] * i_padv + PADH;
1592                         //scale full resolution frame
1593                         if( h->param.i_threads == 1 )
1594                         {
1595                             pixel *src = h->fref[0][j]->filtered[0] - h->fref[0][j]->i_stride[0]*i_padv - PADH;
1596                             pixel *dst = h->fenc->weighted[j] - h->fenc->i_stride[0]*i_padv - PADH;
1597                             int stride = h->fenc->i_stride[0];
1598                             int width = h->fenc->i_width[0] + PADH*2;
1599                             int height = h->fenc->i_lines[0] + i_padv*2;
1600                             x264_weight_scale_plane( h, dst, stride, src, stride, width, height, &h->sh.weight[j][0] );
1601                             h->fenc->i_lines_weighted = height;
1602                         }
1603                     }
1604                 }
1605             }
1606         }
1607     }
1608
1609     if( weightplane[1] )
1610         for( int i = 0; i < h->i_ref[0]; i++ )
1611         {
1612             if( h->sh.weight[i][1].weightfn && !h->sh.weight[i][2].weightfn )
1613             {
1614                 h->sh.weight[i][2].i_scale = 1 << h->sh.weight[0][1].i_denom;
1615                 h->sh.weight[i][2].i_offset = 0;
1616             }
1617             else if( h->sh.weight[i][2].weightfn && !h->sh.weight[i][1].weightfn )
1618             {
1619                 h->sh.weight[i][1].i_scale = 1 << h->sh.weight[0][1].i_denom;
1620                 h->sh.weight[i][1].i_offset = 0;
1621             }
1622         }
1623
1624     if( !weightplane[0] )
1625         h->sh.weight[0][0].i_denom = 0;
1626     if( !weightplane[1] )
1627         h->sh.weight[0][1].i_denom = 0;
1628     h->sh.weight[0][2].i_denom = h->sh.weight[0][1].i_denom;
1629 }
1630
1631 static inline int x264_reference_distance( x264_t *h, x264_frame_t *frame )
1632 {
1633     if( h->param.i_frame_packing == 5 )
1634         return abs((h->fenc->i_frame&~1) - (frame->i_frame&~1)) +
1635                   ((h->fenc->i_frame&1) != (frame->i_frame&1));
1636     else
1637         return abs(h->fenc->i_frame - frame->i_frame);
1638 }
1639
1640 static inline void x264_reference_build_list( x264_t *h, int i_poc )
1641 {
1642     int b_ok;
1643
1644     /* build ref list 0/1 */
1645     h->mb.pic.i_fref[0] = h->i_ref[0] = 0;
1646     h->mb.pic.i_fref[1] = h->i_ref[1] = 0;
1647     if( h->sh.i_type == SLICE_TYPE_I )
1648         return;
1649
1650     for( int i = 0; h->frames.reference[i]; i++ )
1651     {
1652         if( h->frames.reference[i]->b_corrupt )
1653             continue;
1654         if( h->frames.reference[i]->i_poc < i_poc )
1655             h->fref[0][h->i_ref[0]++] = h->frames.reference[i];
1656         else if( h->frames.reference[i]->i_poc > i_poc )
1657             h->fref[1][h->i_ref[1]++] = h->frames.reference[i];
1658     }
1659
1660     /* Order reference lists by distance from the current frame. */
1661     for( int list = 0; list < 2; list++ )
1662     {
1663         h->fref_nearest[list] = h->fref[list][0];
1664         do
1665         {
1666             b_ok = 1;
1667             for( int i = 0; i < h->i_ref[list] - 1; i++ )
1668             {
1669                 if( list ? h->fref[list][i+1]->i_poc < h->fref_nearest[list]->i_poc
1670                          : h->fref[list][i+1]->i_poc > h->fref_nearest[list]->i_poc )
1671                     h->fref_nearest[list] = h->fref[list][i+1];
1672                 if( x264_reference_distance( h, h->fref[list][i] ) > x264_reference_distance( h, h->fref[list][i+1] ) )
1673                 {
1674                     XCHG( x264_frame_t*, h->fref[list][i], h->fref[list][i+1] );
1675                     b_ok = 0;
1676                     break;
1677                 }
1678             }
1679         } while( !b_ok );
1680     }
1681
1682     if( h->sh.i_mmco_remove_from_end )
1683         for( int i = h->i_ref[0]-1; i >= h->i_ref[0] - h->sh.i_mmco_remove_from_end; i-- )
1684         {
1685             int diff = h->i_frame_num - h->fref[0][i]->i_frame_num;
1686             h->sh.mmco[h->sh.i_mmco_command_count].i_poc = h->fref[0][i]->i_poc;
1687             h->sh.mmco[h->sh.i_mmco_command_count++].i_difference_of_pic_nums = diff;
1688         }
1689
1690     x264_reference_check_reorder( h );
1691
1692     h->i_ref[1] = X264_MIN( h->i_ref[1], h->frames.i_max_ref1 );
1693     h->i_ref[0] = X264_MIN( h->i_ref[0], h->frames.i_max_ref0 );
1694     h->i_ref[0] = X264_MIN( h->i_ref[0], h->param.i_frame_reference ); // if reconfig() has lowered the limit
1695
1696     /* For Blu-ray compliance, don't reference frames outside of the minigop. */
1697     if( IS_X264_TYPE_B( h->fenc->i_type ) && h->param.b_bluray_compat )
1698         h->i_ref[0] = X264_MIN( h->i_ref[0], IS_X264_TYPE_B( h->fref[0][0]->i_type ) + 1 );
1699
1700     /* add duplicates */
1701     if( h->fenc->i_type == X264_TYPE_P )
1702     {
1703         int idx = -1;
1704         if( h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE )
1705         {
1706             x264_weight_t w[3];
1707             w[1].weightfn = w[2].weightfn = NULL;
1708             if( h->param.rc.b_stat_read )
1709                 x264_ratecontrol_set_weights( h, h->fenc );
1710
1711             if( !h->fenc->weight[0][0].weightfn )
1712             {
1713                 h->fenc->weight[0][0].i_denom = 0;
1714                 SET_WEIGHT( w[0], 1, 1, 0, -1 );
1715                 idx = x264_weighted_reference_duplicate( h, 0, w );
1716             }
1717             else
1718             {
1719                 if( h->fenc->weight[0][0].i_scale == 1<<h->fenc->weight[0][0].i_denom )
1720                 {
1721                     SET_WEIGHT( h->fenc->weight[0][0], 1, 1, 0, h->fenc->weight[0][0].i_offset );
1722                 }
1723                 x264_weighted_reference_duplicate( h, 0, weight_none );
1724                 if( h->fenc->weight[0][0].i_offset > -128 )
1725                 {
1726                     w[0] = h->fenc->weight[0][0];
1727                     w[0].i_offset--;
1728                     h->mc.weight_cache( h, &w[0] );
1729                     idx = x264_weighted_reference_duplicate( h, 0, w );
1730                 }
1731             }
1732         }
1733         h->mb.ref_blind_dupe = idx;
1734     }
1735
1736     assert( h->i_ref[0] + h->i_ref[1] <= X264_REF_MAX );
1737     h->mb.pic.i_fref[0] = h->i_ref[0];
1738     h->mb.pic.i_fref[1] = h->i_ref[1];
1739 }
1740
1741 static void x264_fdec_filter_row( x264_t *h, int mb_y, int b_inloop )
1742 {
1743     /* mb_y is the mb to be encoded next, not the mb to be filtered here */
1744     int b_hpel = h->fdec->b_kept_as_ref;
1745     int b_deblock = h->sh.i_disable_deblocking_filter_idc != 1;
1746     int b_end = mb_y == h->i_threadslice_end;
1747     int b_measure_quality = 1;
1748     int min_y = mb_y - (1 << SLICE_MBAFF);
1749     int b_start = min_y == h->i_threadslice_start;
1750     /* Even in interlaced mode, deblocking never modifies more than 4 pixels
1751      * above each MB, as bS=4 doesn't happen for the top of interlaced mbpairs. */
1752     int minpix_y = min_y*16 - 4 * !b_start;
1753     int maxpix_y = mb_y*16 - 4 * !b_end;
1754     b_deblock &= b_hpel || h->param.psz_dump_yuv;
1755     if( h->param.b_sliced_threads && b_start && min_y && !b_inloop )
1756     {
1757         b_deblock = 0;         /* We already deblocked on the inloop pass. */
1758         b_measure_quality = 0; /* We already measured quality on the inloop pass. */
1759     }
1760     if( mb_y & SLICE_MBAFF )
1761         return;
1762     if( min_y < h->i_threadslice_start )
1763         return;
1764
1765     if( b_deblock )
1766         for( int y = min_y; y < mb_y; y += (1 << SLICE_MBAFF) )
1767             x264_frame_deblock_row( h, y );
1768
1769     /* FIXME: Prediction requires different borders for interlaced/progressive mc,
1770      * but the actual image data is equivalent. For now, maintain this
1771      * consistency by copying deblocked pixels between planes. */
1772     if( PARAM_INTERLACED )
1773         for( int p = 0; p < 2; p++ )
1774             for( int i = minpix_y>>p; i < maxpix_y>>p; i++ )
1775                 memcpy( h->fdec->plane_fld[p] + i*h->fdec->i_stride[p],
1776                         h->fdec->plane[p]     + i*h->fdec->i_stride[p],
1777                         h->mb.i_mb_width*16*sizeof(pixel) );
1778
1779     if( b_hpel )
1780     {
1781         int end = mb_y == h->mb.i_mb_height;
1782         x264_frame_expand_border( h, h->fdec, min_y, end );
1783         if( h->param.analyse.i_subpel_refine )
1784         {
1785             x264_frame_filter( h, h->fdec, min_y, end );
1786             x264_frame_expand_border_filtered( h, h->fdec, min_y, end );
1787         }
1788     }
1789
1790     if( SLICE_MBAFF )
1791         for( int i = 0; i < 2; i++ )
1792         {
1793             XCHG( pixel *, h->intra_border_backup[0][i], h->intra_border_backup[3][i] );
1794             XCHG( pixel *, h->intra_border_backup[1][i], h->intra_border_backup[4][i] );
1795         }
1796
1797     if( h->i_thread_frames > 1 && h->fdec->b_kept_as_ref )
1798         x264_frame_cond_broadcast( h->fdec, mb_y*16 + (b_end ? 10000 : -(X264_THREAD_HEIGHT << SLICE_MBAFF)) );
1799
1800     if( b_measure_quality )
1801     {
1802         maxpix_y = X264_MIN( maxpix_y, h->param.i_height );
1803         if( h->param.analyse.b_psnr )
1804         {
1805             uint64_t ssd_y = x264_pixel_ssd_wxh( &h->pixf,
1806                 h->fdec->plane[0] + minpix_y * h->fdec->i_stride[0], h->fdec->i_stride[0],
1807                 h->fenc->plane[0] + minpix_y * h->fenc->i_stride[0], h->fenc->i_stride[0],
1808                 h->param.i_width, maxpix_y-minpix_y );
1809             uint64_t ssd_u, ssd_v;
1810             x264_pixel_ssd_nv12( &h->pixf,
1811                 h->fdec->plane[1] + (minpix_y>>1) * h->fdec->i_stride[1], h->fdec->i_stride[1],
1812                 h->fenc->plane[1] + (minpix_y>>1) * h->fenc->i_stride[1], h->fenc->i_stride[1],
1813                 h->param.i_width>>1, (maxpix_y-minpix_y)>>1, &ssd_u, &ssd_v );
1814             h->stat.frame.i_ssd[0] += ssd_y;
1815             h->stat.frame.i_ssd[1] += ssd_u;
1816             h->stat.frame.i_ssd[2] += ssd_v;
1817         }
1818
1819         if( h->param.analyse.b_ssim )
1820         {
1821             x264_emms();
1822             /* offset by 2 pixels to avoid alignment of ssim blocks with dct blocks,
1823              * and overlap by 4 */
1824             minpix_y += b_start ? 2 : -6;
1825             h->stat.frame.f_ssim +=
1826                 x264_pixel_ssim_wxh( &h->pixf,
1827                     h->fdec->plane[0] + 2+minpix_y*h->fdec->i_stride[0], h->fdec->i_stride[0],
1828                     h->fenc->plane[0] + 2+minpix_y*h->fenc->i_stride[0], h->fenc->i_stride[0],
1829                     h->param.i_width-2, maxpix_y-minpix_y, h->scratch_buffer );
1830         }
1831     }
1832 }
1833
1834 static inline int x264_reference_update( x264_t *h )
1835 {
1836     if( !h->fdec->b_kept_as_ref )
1837     {
1838         if( h->i_thread_frames > 1 )
1839         {
1840             x264_frame_push_unused( h, h->fdec );
1841             h->fdec = x264_frame_pop_unused( h, 1 );
1842             if( !h->fdec )
1843                 return -1;
1844         }
1845         return 0;
1846     }
1847
1848     /* apply mmco from previous frame. */
1849     for( int i = 0; i < h->sh.i_mmco_command_count; i++ )
1850         for( int j = 0; h->frames.reference[j]; j++ )
1851             if( h->frames.reference[j]->i_poc == h->sh.mmco[i].i_poc )
1852                 x264_frame_push_unused( h, x264_frame_shift( &h->frames.reference[j] ) );
1853
1854     /* move frame in the buffer */
1855     x264_frame_push( h->frames.reference, h->fdec );
1856     if( h->frames.reference[h->sps->i_num_ref_frames] )
1857         x264_frame_push_unused( h, x264_frame_shift( h->frames.reference ) );
1858     h->fdec = x264_frame_pop_unused( h, 1 );
1859     if( !h->fdec )
1860         return -1;
1861     return 0;
1862 }
1863
1864 static inline void x264_reference_reset( x264_t *h )
1865 {
1866     while( h->frames.reference[0] )
1867         x264_frame_push_unused( h, x264_frame_pop( h->frames.reference ) );
1868     h->fdec->i_poc =
1869     h->fenc->i_poc = 0;
1870 }
1871
1872 static inline void x264_reference_hierarchy_reset( x264_t *h )
1873 {
1874     int ref;
1875     int b_hasdelayframe = 0;
1876
1877     /* look for delay frames -- chain must only contain frames that are disposable */
1878     for( int i = 0; h->frames.current[i] && IS_DISPOSABLE( h->frames.current[i]->i_type ); i++ )
1879         b_hasdelayframe |= h->frames.current[i]->i_coded
1880                         != h->frames.current[i]->i_frame + h->sps->vui.i_num_reorder_frames;
1881
1882     /* This function must handle b-pyramid and clear frames for open-gop */
1883     if( h->param.i_bframe_pyramid != X264_B_PYRAMID_STRICT && !b_hasdelayframe && h->frames.i_poc_last_open_gop == -1 )
1884         return;
1885
1886     /* Remove last BREF. There will never be old BREFs in the
1887      * dpb during a BREF decode when pyramid == STRICT */
1888     for( ref = 0; h->frames.reference[ref]; ref++ )
1889     {
1890         if( ( h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT
1891             && h->frames.reference[ref]->i_type == X264_TYPE_BREF )
1892             || ( h->frames.reference[ref]->i_poc < h->frames.i_poc_last_open_gop
1893             && h->sh.i_type != SLICE_TYPE_B ) )
1894         {
1895             int diff = h->i_frame_num - h->frames.reference[ref]->i_frame_num;
1896             h->sh.mmco[h->sh.i_mmco_command_count].i_difference_of_pic_nums = diff;
1897             h->sh.mmco[h->sh.i_mmco_command_count++].i_poc = h->frames.reference[ref]->i_poc;
1898             x264_frame_push_unused( h, x264_frame_shift( &h->frames.reference[ref] ) );
1899             h->b_ref_reorder[0] = 1;
1900             ref--;
1901         }
1902     }
1903
1904     /* Prepare room in the dpb for the delayed display time of the later b-frame's */
1905     if( h->param.i_bframe_pyramid )
1906         h->sh.i_mmco_remove_from_end = X264_MAX( ref + 2 - h->frames.i_max_dpb, 0 );
1907 }
1908
1909 static inline void x264_slice_init( x264_t *h, int i_nal_type, int i_global_qp )
1910 {
1911     /* ------------------------ Create slice header  ----------------------- */
1912     if( i_nal_type == NAL_SLICE_IDR )
1913     {
1914         x264_slice_header_init( h, &h->sh, h->sps, h->pps, h->i_idr_pic_id, h->i_frame_num, i_global_qp );
1915
1916         /* alternate id */
1917         h->i_idr_pic_id ^= 1;
1918     }
1919     else
1920     {
1921         x264_slice_header_init( h, &h->sh, h->sps, h->pps, -1, h->i_frame_num, i_global_qp );
1922
1923         h->sh.i_num_ref_idx_l0_active = h->i_ref[0] <= 0 ? 1 : h->i_ref[0];
1924         h->sh.i_num_ref_idx_l1_active = h->i_ref[1] <= 0 ? 1 : h->i_ref[1];
1925         if( h->sh.i_num_ref_idx_l0_active != h->pps->i_num_ref_idx_l0_default_active ||
1926             (h->sh.i_type == SLICE_TYPE_B && h->sh.i_num_ref_idx_l1_active != h->pps->i_num_ref_idx_l1_default_active) )
1927         {
1928             h->sh.b_num_ref_idx_override = 1;
1929         }
1930     }
1931
1932     if( h->fenc->i_type == X264_TYPE_BREF && h->param.b_bluray_compat && h->sh.i_mmco_command_count )
1933     {
1934         h->b_sh_backup = 1;
1935         h->sh_backup = h->sh;
1936     }
1937
1938     h->fdec->i_frame_num = h->sh.i_frame_num;
1939
1940     if( h->sps->i_poc_type == 0 )
1941     {
1942         h->sh.i_poc = h->fdec->i_poc;
1943         if( PARAM_INTERLACED )
1944         {
1945             h->sh.i_delta_poc_bottom = h->param.b_tff ? 1 : -1;
1946             h->sh.i_poc += h->sh.i_delta_poc_bottom == -1;
1947         }
1948         else
1949             h->sh.i_delta_poc_bottom = 0;
1950         h->fdec->i_delta_poc[0] = h->sh.i_delta_poc_bottom == -1;
1951         h->fdec->i_delta_poc[1] = h->sh.i_delta_poc_bottom ==  1;
1952     }
1953     else if( h->sps->i_poc_type == 1 )
1954     {
1955         /* FIXME TODO FIXME */
1956     }
1957     else
1958     {
1959         /* Nothing to do ? */
1960     }
1961
1962     x264_macroblock_slice_init( h );
1963 }
1964
1965 static int x264_slice_write( x264_t *h )
1966 {
1967     int i_skip;
1968     int mb_xy, i_mb_x, i_mb_y;
1969     int i_skip_bak = 0; /* Shut up GCC. */
1970     bs_t UNINIT(bs_bak);
1971     x264_cabac_t cabac_bak;
1972     uint8_t cabac_prevbyte_bak = 0; /* Shut up GCC. */
1973     int mv_bits_bak = 0;
1974     int tex_bits_bak = 0;
1975     /* NALUs other than the first use a 3-byte startcode.
1976      * Add one extra byte for the rbsp, and one more for the final CABAC putbyte.
1977      * Then add an extra 5 bytes just in case, to account for random NAL escapes and
1978      * other inaccuracies. */
1979     int overhead_guess = (NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal)) + 1 + h->param.b_cabac + 5;
1980     int slice_max_size = h->param.i_slice_max_size > 0 ? (h->param.i_slice_max_size-overhead_guess)*8 : 0;
1981     int back_up_bitstream = slice_max_size || (!h->param.b_cabac && h->sps->i_profile_idc < PROFILE_HIGH);
1982     int starting_bits = bs_pos(&h->out.bs);
1983     int b_deblock = h->sh.i_disable_deblocking_filter_idc != 1;
1984     int b_hpel = h->fdec->b_kept_as_ref;
1985     uint8_t *last_emu_check;
1986     b_deblock &= b_hpel || h->param.psz_dump_yuv;
1987     bs_realign( &h->out.bs );
1988
1989     /* Slice */
1990     x264_nal_start( h, h->i_nal_type, h->i_nal_ref_idc );
1991     h->out.nal[h->out.i_nal].i_first_mb = h->sh.i_first_mb;
1992
1993     /* Slice header */
1994     x264_macroblock_thread_init( h );
1995
1996     /* If this isn't the first slice in the threadslice, set the slice QP
1997      * equal to the last QP in the previous slice for more accurate
1998      * CABAC initialization. */
1999     if( h->sh.i_first_mb != h->i_threadslice_start * h->mb.i_mb_width )
2000     {
2001         h->sh.i_qp = h->mb.i_last_qp;
2002         h->sh.i_qp_delta = h->sh.i_qp - h->pps->i_pic_init_qp;
2003     }
2004
2005     x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
2006     if( h->param.b_cabac )
2007     {
2008         /* alignment needed */
2009         bs_align_1( &h->out.bs );
2010
2011         /* init cabac */
2012         x264_cabac_context_init( &h->cabac, h->sh.i_type, x264_clip3( h->sh.i_qp-QP_BD_OFFSET, 0, 51 ), h->sh.i_cabac_init_idc );
2013         x264_cabac_encode_init ( &h->cabac, h->out.bs.p, h->out.bs.p_end );
2014         last_emu_check = h->cabac.p;
2015     }
2016     else
2017         last_emu_check = h->out.bs.p;
2018     h->mb.i_last_qp = h->sh.i_qp;
2019     h->mb.i_last_dqp = 0;
2020     h->mb.field_decoding_flag = 0;
2021
2022     i_mb_y = h->sh.i_first_mb / h->mb.i_mb_width;
2023     i_mb_x = h->sh.i_first_mb % h->mb.i_mb_width;
2024     i_skip = 0;
2025     int mb_size[2];
2026
2027     while( 1 )
2028     {
2029         mb_xy = i_mb_x + i_mb_y * h->mb.i_mb_width;
2030         int mb_spos = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2031
2032         if( x264_bitstream_check_buffer( h ) )
2033             return -1;
2034
2035         if( back_up_bitstream && (!SLICE_MBAFF || (i_mb_y&1) == 0) )
2036         {
2037             mv_bits_bak = h->stat.frame.i_mv_bits;
2038             tex_bits_bak = h->stat.frame.i_tex_bits;
2039             /* We don't need the contexts because flushing the CABAC encoder has no context
2040              * dependency and macroblocks are only re-encoded in the case where a slice is
2041              * ended (and thus the content of all contexts are thrown away). */
2042             if( h->param.b_cabac )
2043             {
2044                 memcpy( &cabac_bak, &h->cabac, offsetof(x264_cabac_t, f8_bits_encoded) );
2045                 /* x264's CABAC writer modifies the previous byte during carry, so it has to be
2046                  * backed up. */
2047                 cabac_prevbyte_bak = h->cabac.p[-1];
2048             }
2049             else
2050             {
2051                 bs_bak = h->out.bs;
2052                 i_skip_bak = i_skip;
2053             }
2054         }
2055
2056         if( i_mb_x == 0 && !h->mb.b_reencode_mb )
2057             x264_fdec_filter_row( h, i_mb_y, 1 );
2058
2059         if( PARAM_INTERLACED )
2060         {
2061             if( h->mb.b_adaptive_mbaff )
2062             {
2063                 if( !(i_mb_y&1) )
2064                 {
2065                     /* FIXME: VSAD is fast but fairly poor at choosing the best interlace type. */
2066                     int stride = h->fenc->i_stride[0];
2067                     pixel *fenc = h->fenc->plane[0] + 16 * (i_mb_x + i_mb_y * stride);
2068                     h->mb.b_interlaced = x264_field_vsad( h, fenc, stride );
2069                     memcpy( &h->zigzagf, MB_INTERLACED ? &h->zigzagf_interlaced : &h->zigzagf_progressive, sizeof(h->zigzagf) );
2070                 }
2071             }
2072             h->mb.field[mb_xy] = MB_INTERLACED;
2073         }
2074
2075         /* load cache */
2076         if( SLICE_MBAFF )
2077             x264_macroblock_cache_load_interlaced( h, i_mb_x, i_mb_y );
2078         else
2079             x264_macroblock_cache_load_progressive( h, i_mb_x, i_mb_y );
2080
2081         x264_macroblock_analyse( h );
2082
2083         /* encode this macroblock -> be careful it can change the mb type to P_SKIP if needed */
2084 reencode:
2085         x264_macroblock_encode( h );
2086
2087         if( h->param.b_cabac )
2088         {
2089             if( mb_xy > h->sh.i_first_mb && !(SLICE_MBAFF && (i_mb_y&1)) )
2090                 x264_cabac_encode_terminal( &h->cabac );
2091
2092             if( IS_SKIP( h->mb.i_type ) )
2093                 x264_cabac_mb_skip( h, 1 );
2094             else
2095             {
2096                 if( h->sh.i_type != SLICE_TYPE_I )
2097                     x264_cabac_mb_skip( h, 0 );
2098                 x264_macroblock_write_cabac( h, &h->cabac );
2099             }
2100         }
2101         else
2102         {
2103             if( IS_SKIP( h->mb.i_type ) )
2104                 i_skip++;
2105             else
2106             {
2107                 if( h->sh.i_type != SLICE_TYPE_I )
2108                 {
2109                     bs_write_ue( &h->out.bs, i_skip );  /* skip run */
2110                     i_skip = 0;
2111                 }
2112                 x264_macroblock_write_cavlc( h );
2113                 /* If there was a CAVLC level code overflow, try again at a higher QP. */
2114                 if( h->mb.b_overflow )
2115                 {
2116                     h->mb.i_chroma_qp = h->chroma_qp_table[++h->mb.i_qp];
2117                     h->mb.i_skip_intra = 0;
2118                     h->mb.b_skip_mc = 0;
2119                     h->mb.b_overflow = 0;
2120                     h->out.bs = bs_bak;
2121                     i_skip = i_skip_bak;
2122                     h->stat.frame.i_mv_bits = mv_bits_bak;
2123                     h->stat.frame.i_tex_bits = tex_bits_bak;
2124                     goto reencode;
2125                 }
2126             }
2127         }
2128
2129         int total_bits = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
2130         mb_size[i_mb_y&1] = total_bits - mb_spos;
2131
2132         if( slice_max_size )
2133         {
2134             /* Count the skip run, just in case. */
2135             if( !h->param.b_cabac )
2136                 total_bits += bs_size_ue_big( i_skip );
2137             /* Check for escape bytes. */
2138             uint8_t *end = h->param.b_cabac ? h->cabac.p : h->out.bs.p;
2139             for( ; last_emu_check < end - 2; last_emu_check++ )
2140                 if( last_emu_check[0] == 0 && last_emu_check[1] == 0 && last_emu_check[2] <= 3 )
2141                 {
2142                     slice_max_size -= 8;
2143                     last_emu_check++;
2144                 }
2145             /* We'll just re-encode this last macroblock if we go over the max slice size. */
2146             if( total_bits - starting_bits > slice_max_size && !h->mb.b_reencode_mb )
2147             {
2148                 if( mb_xy != h->sh.i_first_mb )
2149                 {
2150                     h->stat.frame.i_mv_bits = mv_bits_bak;
2151                     h->stat.frame.i_tex_bits = tex_bits_bak;
2152                     if( h->param.b_cabac )
2153                     {
2154                         memcpy( &h->cabac, &cabac_bak, offsetof(x264_cabac_t, f8_bits_encoded) );
2155                         h->cabac.p[-1] = cabac_prevbyte_bak;
2156                     }
2157                     else
2158                     {
2159                         h->out.bs = bs_bak;
2160                         i_skip = i_skip_bak;
2161                     }
2162                     h->mb.b_reencode_mb = 1;
2163                     if( SLICE_MBAFF )
2164                     {
2165                         // set to bottom of previous mbpair
2166                         if( i_mb_x )
2167                             h->sh.i_last_mb = mb_xy-1+h->mb.i_mb_stride*(!(i_mb_y&1));
2168                         else
2169                             h->sh.i_last_mb = (i_mb_y-2+!(i_mb_y&1))*h->mb.i_mb_stride + h->mb.i_mb_width - 1;
2170                     }
2171                     else
2172                         h->sh.i_last_mb = mb_xy-1;
2173                     break;
2174                 }
2175                 else
2176                 {
2177                     h->sh.i_last_mb = mb_xy;
2178                     h->mb.b_reencode_mb = 0;
2179                 }
2180             }
2181             else
2182                 h->mb.b_reencode_mb = 0;
2183         }
2184
2185 #if HAVE_VISUALIZE
2186         if( h->param.b_visualize )
2187             x264_visualize_mb( h );
2188 #endif
2189
2190         /* save cache */
2191         x264_macroblock_cache_save( h );
2192
2193         /* accumulate mb stats */
2194         h->stat.frame.i_mb_count[h->mb.i_type]++;
2195
2196         int b_intra = IS_INTRA( h->mb.i_type );
2197         if( h->param.i_log_level >= X264_LOG_INFO || h->param.rc.b_stat_write )
2198         {
2199             if( !b_intra && !IS_SKIP( h->mb.i_type ) && !IS_DIRECT( h->mb.i_type ) )
2200             {
2201                 if( h->mb.i_partition != D_8x8 )
2202                         h->stat.frame.i_mb_partition[h->mb.i_partition] += 4;
2203                     else
2204                         for( int i = 0; i < 4; i++ )
2205                             h->stat.frame.i_mb_partition[h->mb.i_sub_partition[i]] ++;
2206                 if( h->param.i_frame_reference > 1 )
2207                     for( int i_list = 0; i_list <= (h->sh.i_type == SLICE_TYPE_B); i_list++ )
2208                         for( int i = 0; i < 4; i++ )
2209                         {
2210                             int i_ref = h->mb.cache.ref[i_list][ x264_scan8[4*i] ];
2211                             if( i_ref >= 0 )
2212                                 h->stat.frame.i_mb_count_ref[i_list][i_ref] ++;
2213                         }
2214             }
2215         }
2216
2217         if( h->param.i_log_level >= X264_LOG_INFO )
2218         {
2219             if( h->mb.i_cbp_luma | h->mb.i_cbp_chroma )
2220             {
2221                 int cbpsum = (h->mb.i_cbp_luma&1) + ((h->mb.i_cbp_luma>>1)&1)
2222                            + ((h->mb.i_cbp_luma>>2)&1) + (h->mb.i_cbp_luma>>3);
2223                 h->stat.frame.i_mb_cbp[!b_intra + 0] += cbpsum;
2224                 h->stat.frame.i_mb_cbp[!b_intra + 2] += !!h->mb.i_cbp_chroma;
2225                 h->stat.frame.i_mb_cbp[!b_intra + 4] += h->mb.i_cbp_chroma >> 1;
2226             }
2227             if( h->mb.i_cbp_luma && !b_intra )
2228             {
2229                 h->stat.frame.i_mb_count_8x8dct[0] ++;
2230                 h->stat.frame.i_mb_count_8x8dct[1] += h->mb.b_transform_8x8;
2231             }
2232             if( b_intra && h->mb.i_type != I_PCM )
2233             {
2234                 if( h->mb.i_type == I_16x16 )
2235                     h->stat.frame.i_mb_pred_mode[0][h->mb.i_intra16x16_pred_mode]++;
2236                 else if( h->mb.i_type == I_8x8 )
2237                     for( int i = 0; i < 16; i += 4 )
2238                         h->stat.frame.i_mb_pred_mode[1][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2239                 else //if( h->mb.i_type == I_4x4 )
2240                     for( int i = 0; i < 16; i++ )
2241                         h->stat.frame.i_mb_pred_mode[2][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
2242                 h->stat.frame.i_mb_pred_mode[3][x264_mb_pred_mode8x8c_fix[h->mb.i_chroma_pred_mode]]++;
2243             }
2244         }
2245
2246         /* calculate deblock strength values (actual deblocking is done per-row along with hpel) */
2247         if( b_deblock )
2248             x264_macroblock_deblock_strength( h );
2249
2250         if( SLICE_MBAFF )
2251         {
2252             /* update ratecontrol per-mbpair in MBAFF */
2253             if( i_mb_y&1 )
2254                 x264_ratecontrol_mb( h, mb_size[0]+mb_size[1] );
2255         }
2256         else
2257             x264_ratecontrol_mb( h, mb_size[i_mb_y&1] );
2258
2259         if( mb_xy == h->sh.i_last_mb )
2260             break;
2261
2262         if( SLICE_MBAFF )
2263         {
2264             i_mb_x += i_mb_y & 1;
2265             i_mb_y ^= i_mb_x < h->mb.i_mb_width;
2266         }
2267         else
2268             i_mb_x++;
2269         if( i_mb_x == h->mb.i_mb_width )
2270         {
2271             i_mb_y++;
2272             i_mb_x = 0;
2273         }
2274     }
2275     h->out.nal[h->out.i_nal].i_last_mb = h->sh.i_last_mb;
2276
2277     if( h->param.b_cabac )
2278     {
2279         x264_cabac_encode_flush( h, &h->cabac );
2280         h->out.bs.p = h->cabac.p;
2281     }
2282     else
2283     {
2284         if( i_skip > 0 )
2285             bs_write_ue( &h->out.bs, i_skip );  /* last skip run */
2286         /* rbsp_slice_trailing_bits */
2287         bs_rbsp_trailing( &h->out.bs );
2288         bs_flush( &h->out.bs );
2289     }
2290     if( x264_nal_end( h ) )
2291         return -1;
2292
2293     if( h->sh.i_last_mb == (h->i_threadslice_end * h->mb.i_mb_width - 1) )
2294     {
2295         h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
2296                                   + (h->out.i_nal*NALU_OVERHEAD * 8)
2297                                   - h->stat.frame.i_tex_bits
2298                                   - h->stat.frame.i_mv_bits;
2299         x264_fdec_filter_row( h, h->i_threadslice_end, 1 );
2300     }
2301
2302     return 0;
2303 }
2304
2305 static void x264_thread_sync_context( x264_t *dst, x264_t *src )
2306 {
2307     if( dst == src )
2308         return;
2309
2310     // reference counting
2311     for( x264_frame_t **f = src->frames.reference; *f; f++ )
2312         (*f)->i_reference_count++;
2313     for( x264_frame_t **f = dst->frames.reference; *f; f++ )
2314         x264_frame_push_unused( src, *f );
2315     src->fdec->i_reference_count++;
2316     x264_frame_push_unused( src, dst->fdec );
2317
2318     // copy everything except the per-thread pointers and the constants.
2319     memcpy( &dst->i_frame, &src->i_frame, offsetof(x264_t, mb.type) - offsetof(x264_t, i_frame) );
2320     dst->param = src->param;
2321     dst->stat = src->stat;
2322     dst->pixf = src->pixf;
2323 }
2324
2325 static void x264_thread_sync_stat( x264_t *dst, x264_t *src )
2326 {
2327     if( dst == src )
2328         return;
2329     memcpy( &dst->stat.i_frame_count, &src->stat.i_frame_count, sizeof(dst->stat) - sizeof(dst->stat.frame) );
2330 }
2331
2332 static void *x264_slices_write( x264_t *h )
2333 {
2334     int i_slice_num = 0;
2335     int last_thread_mb = h->sh.i_last_mb;
2336
2337 #if HAVE_VISUALIZE
2338     if( h->param.b_visualize )
2339         if( x264_visualize_init( h ) )
2340             return (void *)-1;
2341 #endif
2342
2343     /* init stats */
2344     memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
2345     h->mb.b_reencode_mb = 0;
2346     while( h->sh.i_first_mb + SLICE_MBAFF*h->mb.i_mb_stride <= last_thread_mb )
2347     {
2348         h->sh.i_last_mb = last_thread_mb;
2349         if( h->param.i_slice_max_mbs )
2350         {
2351             if( SLICE_MBAFF )
2352             {
2353                 // convert first to mbaff form, add slice-max-mbs, then convert back to normal form
2354                 int last_mbaff = 2*(h->sh.i_first_mb % h->mb.i_mb_width)
2355                     + h->mb.i_mb_width*(h->sh.i_first_mb / h->mb.i_mb_width)
2356                     + h->param.i_slice_max_mbs - 1;
2357                 int last_x = (last_mbaff % (2*h->mb.i_mb_width))/2;
2358                 int last_y = (last_mbaff / (2*h->mb.i_mb_width))*2 + 1;
2359                 h->sh.i_last_mb = last_x + h->mb.i_mb_stride*last_y;
2360             }
2361             else
2362                 h->sh.i_last_mb = h->sh.i_first_mb + h->param.i_slice_max_mbs - 1;
2363         }
2364         else if( h->param.i_slice_count && !h->param.b_sliced_threads )
2365         {
2366             int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2367             int width = h->mb.i_mb_width << PARAM_INTERLACED;
2368             i_slice_num++;
2369             h->sh.i_last_mb = (height * i_slice_num + h->param.i_slice_count/2) / h->param.i_slice_count * width - 1;
2370         }
2371         h->sh.i_last_mb = X264_MIN( h->sh.i_last_mb, last_thread_mb );
2372         if( x264_stack_align( x264_slice_write, h ) )
2373             return (void *)-1;
2374         h->sh.i_first_mb = h->sh.i_last_mb + 1;
2375         // if i_first_mb is not the last mb in a row then go to the next mb in MBAFF order
2376         if( SLICE_MBAFF && h->sh.i_first_mb % h->mb.i_mb_width )
2377             h->sh.i_first_mb -= h->mb.i_mb_stride;
2378     }
2379
2380 #if HAVE_VISUALIZE
2381     if( h->param.b_visualize )
2382     {
2383         x264_visualize_show( h );
2384         x264_visualize_close( h );
2385     }
2386 #endif
2387
2388     return (void *)0;
2389 }
2390
2391 static int x264_threaded_slices_write( x264_t *h )
2392 {
2393     /* set first/last mb and sync contexts */
2394     for( int i = 0; i < h->param.i_threads; i++ )
2395     {
2396         x264_t *t = h->thread[i];
2397         if( i )
2398         {
2399             t->param = h->param;
2400             memcpy( &t->i_frame, &h->i_frame, offsetof(x264_t, rc) - offsetof(x264_t, i_frame) );
2401         }
2402         int height = h->mb.i_mb_height >> PARAM_INTERLACED;
2403         t->i_threadslice_start = ((height *  i    + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2404         t->i_threadslice_end   = ((height * (i+1) + h->param.i_slice_count/2) / h->param.i_threads) << PARAM_INTERLACED;
2405         t->sh.i_first_mb = t->i_threadslice_start * h->mb.i_mb_width;
2406         t->sh.i_last_mb  =   t->i_threadslice_end * h->mb.i_mb_width - 1;
2407     }
2408
2409     x264_stack_align( x264_analyse_weight_frame, h, h->mb.i_mb_height*16 + 16 );
2410
2411     x264_threads_distribute_ratecontrol( h );
2412
2413     /* dispatch */
2414     for( int i = 0; i < h->param.i_threads; i++ )
2415     {
2416         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h->thread[i] );
2417         h->thread[i]->b_thread_active = 1;
2418     }
2419     for( int i = 0; i < h->param.i_threads; i++ )
2420     {
2421         h->thread[i]->b_thread_active = 0;
2422         if( (intptr_t)x264_threadpool_wait( h->threadpool, h->thread[i] ) )
2423             return -1;
2424     }
2425
2426     /* Go back and fix up the hpel on the borders between slices. */
2427     for( int i = 1; i < h->param.i_threads; i++ )
2428     {
2429         x264_fdec_filter_row( h->thread[i], h->thread[i]->i_threadslice_start + 1, 0 );
2430         if( SLICE_MBAFF )
2431             x264_fdec_filter_row( h->thread[i], h->thread[i]->i_threadslice_start + 2, 0 );
2432     }
2433
2434     x264_threads_merge_ratecontrol( h );
2435
2436     for( int i = 1; i < h->param.i_threads; i++ )
2437     {
2438         x264_t *t = h->thread[i];
2439         for( int j = 0; j < t->out.i_nal; j++ )
2440         {
2441             h->out.nal[h->out.i_nal] = t->out.nal[j];
2442             h->out.i_nal++;
2443             x264_nal_check_buffer( h );
2444         }
2445         /* All entries in stat.frame are ints except for ssd/ssim. */
2446         for( int j = 0; j < (offsetof(x264_t,stat.frame.i_ssd) - offsetof(x264_t,stat.frame.i_mv_bits)) / sizeof(int); j++ )
2447             ((int*)&h->stat.frame)[j] += ((int*)&t->stat.frame)[j];
2448         for( int j = 0; j < 3; j++ )
2449             h->stat.frame.i_ssd[j] += t->stat.frame.i_ssd[j];
2450         h->stat.frame.f_ssim += t->stat.frame.f_ssim;
2451     }
2452
2453     return 0;
2454 }
2455
2456 void x264_encoder_intra_refresh( x264_t *h )
2457 {
2458     h = h->thread[h->i_thread_phase];
2459     h->b_queued_intra_refresh = 1;
2460 }
2461
2462 int x264_encoder_invalidate_reference( x264_t *h, int64_t pts )
2463 {
2464     if( h->param.i_bframe )
2465     {
2466         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with B-frames enabled\n" );
2467         return -1;
2468     }
2469     if( h->param.b_intra_refresh )
2470     {
2471         x264_log( h, X264_LOG_ERROR, "x264_encoder_invalidate_reference is not supported with intra refresh enabled\n" );
2472         return -1;
2473     }
2474     h = h->thread[h->i_thread_phase];
2475     if( pts >= h->i_last_idr_pts )
2476     {
2477         for( int i = 0; h->frames.reference[i]; i++ )
2478             if( pts <= h->frames.reference[i]->i_pts )
2479                 h->frames.reference[i]->b_corrupt = 1;
2480         if( pts <= h->fdec->i_pts )
2481             h->fdec->b_corrupt = 1;
2482     }
2483     return 0;
2484 }
2485
2486 /****************************************************************************
2487  * x264_encoder_encode:
2488  *  XXX: i_poc   : is the poc of the current given picture
2489  *       i_frame : is the number of the frame being coded
2490  *  ex:  type frame poc
2491  *       I      0   2*0
2492  *       P      1   2*3
2493  *       B      2   2*1
2494  *       B      3   2*2
2495  *       P      4   2*6
2496  *       B      5   2*4
2497  *       B      6   2*5
2498  ****************************************************************************/
2499 int     x264_encoder_encode( x264_t *h,
2500                              x264_nal_t **pp_nal, int *pi_nal,
2501                              x264_picture_t *pic_in,
2502                              x264_picture_t *pic_out )
2503 {
2504     x264_t *thread_current, *thread_prev, *thread_oldest;
2505     int i_nal_type, i_nal_ref_idc, i_global_qp;
2506     int overhead = NALU_OVERHEAD;
2507
2508     if( h->i_thread_frames > 1 )
2509     {
2510         thread_prev    = h->thread[ h->i_thread_phase ];
2511         h->i_thread_phase = (h->i_thread_phase + 1) % h->i_thread_frames;
2512         thread_current = h->thread[ h->i_thread_phase ];
2513         thread_oldest  = h->thread[ (h->i_thread_phase + 1) % h->i_thread_frames ];
2514         x264_thread_sync_context( thread_current, thread_prev );
2515         x264_thread_sync_ratecontrol( thread_current, thread_prev, thread_oldest );
2516         h = thread_current;
2517     }
2518     else
2519     {
2520         thread_current =
2521         thread_oldest  = h;
2522     }
2523 #if HAVE_MMX
2524     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
2525         x264_cpu_mask_misalign_sse();
2526 #endif
2527
2528     // ok to call this before encoding any frames, since the initial values of fdec have b_kept_as_ref=0
2529     if( x264_reference_update( h ) )
2530         return -1;
2531     h->fdec->i_lines_completed = -1;
2532
2533     /* no data out */
2534     *pi_nal = 0;
2535     *pp_nal = NULL;
2536
2537     /* ------------------- Setup new frame from picture -------------------- */
2538     if( pic_in != NULL )
2539     {
2540         /* 1: Copy the picture to a frame and move it to a buffer */
2541         x264_frame_t *fenc = x264_frame_pop_unused( h, 0 );
2542         if( !fenc )
2543             return -1;
2544
2545         if( x264_frame_copy_picture( h, fenc, pic_in ) < 0 )
2546             return -1;
2547
2548         if( h->param.i_width != 16 * h->mb.i_mb_width ||
2549             h->param.i_height != 16 * h->mb.i_mb_height )
2550             x264_frame_expand_border_mod16( h, fenc );
2551
2552         fenc->i_frame = h->frames.i_input++;
2553
2554         if( fenc->i_frame == 0 )
2555             h->frames.i_first_pts = fenc->i_pts;
2556         if( h->frames.i_bframe_delay && fenc->i_frame == h->frames.i_bframe_delay )
2557             h->frames.i_bframe_delay_time = fenc->i_pts - h->frames.i_first_pts;
2558
2559         if( h->param.b_vfr_input && fenc->i_pts <= h->frames.i_largest_pts )
2560             x264_log( h, X264_LOG_WARNING, "non-strictly-monotonic PTS\n" );
2561
2562         h->frames.i_second_largest_pts = h->frames.i_largest_pts;
2563         h->frames.i_largest_pts = fenc->i_pts;
2564
2565         if( (fenc->i_pic_struct < PIC_STRUCT_AUTO) || (fenc->i_pic_struct > PIC_STRUCT_TRIPLE) )
2566             fenc->i_pic_struct = PIC_STRUCT_AUTO;
2567
2568         if( fenc->i_pic_struct == PIC_STRUCT_AUTO )
2569         {
2570 #if HAVE_INTERLACED
2571             int b_interlaced = fenc->param ? fenc->param->b_interlaced : h->param.b_interlaced;
2572 #else
2573             int b_interlaced = 0;
2574 #endif
2575             if( b_interlaced )
2576             {
2577                 int b_tff = fenc->param ? fenc->param->b_tff : h->param.b_tff;
2578                 fenc->i_pic_struct = b_tff ? PIC_STRUCT_TOP_BOTTOM : PIC_STRUCT_BOTTOM_TOP;
2579             }
2580             else
2581                 fenc->i_pic_struct = PIC_STRUCT_PROGRESSIVE;
2582         }
2583
2584         if( h->param.rc.b_mb_tree && h->param.rc.b_stat_read )
2585         {
2586             if( x264_macroblock_tree_read( h, fenc, pic_in->prop.quant_offsets ) )
2587                 return -1;
2588         }
2589         else
2590             x264_stack_align( x264_adaptive_quant_frame, h, fenc, pic_in->prop.quant_offsets );
2591
2592         if( pic_in->prop.quant_offsets_free )
2593             pic_in->prop.quant_offsets_free( pic_in->prop.quant_offsets );
2594
2595         if( h->frames.b_have_lowres )
2596             x264_frame_init_lowres( h, fenc );
2597
2598         /* 2: Place the frame into the queue for its slice type decision */
2599         x264_lookahead_put_frame( h, fenc );
2600
2601         if( h->frames.i_input <= h->frames.i_delay + 1 - h->i_thread_frames )
2602         {
2603             /* Nothing yet to encode, waiting for filling of buffers */
2604             pic_out->i_type = X264_TYPE_AUTO;
2605             return 0;
2606         }
2607     }
2608     else
2609     {
2610         /* signal kills for lookahead thread */
2611         x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
2612         h->lookahead->b_exit_thread = 1;
2613         x264_pthread_cond_broadcast( &h->lookahead->ifbuf.cv_fill );
2614         x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
2615     }
2616
2617     h->i_frame++;
2618     /* 3: The picture is analyzed in the lookahead */
2619     if( !h->frames.current[0] )
2620         x264_lookahead_get_frames( h );
2621
2622     if( !h->frames.current[0] && x264_lookahead_is_empty( h ) )
2623         return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
2624
2625     /* ------------------- Get frame to be encoded ------------------------- */
2626     /* 4: get picture to encode */
2627     h->fenc = x264_frame_shift( h->frames.current );
2628     if( h->i_frame == h->i_thread_frames - 1 )
2629         h->i_reordered_pts_delay = h->fenc->i_reordered_pts;
2630     if( h->fenc->param )
2631     {
2632         x264_encoder_reconfig( h, h->fenc->param );
2633         if( h->fenc->param->param_free )
2634             h->fenc->param->param_free( h->fenc->param );
2635     }
2636
2637     if( !IS_X264_TYPE_I( h->fenc->i_type ) )
2638     {
2639         int valid_refs_left = 0;
2640         for( int i = 0; h->frames.reference[i]; i++ )
2641             if( !h->frames.reference[i]->b_corrupt )
2642                 valid_refs_left++;
2643         /* No valid reference frames left: force an IDR. */
2644         if( !valid_refs_left )
2645         {
2646             h->fenc->b_keyframe = 1;
2647             h->fenc->i_type = X264_TYPE_IDR;
2648         }
2649     }
2650
2651     if( h->fenc->b_keyframe )
2652     {
2653         h->frames.i_last_keyframe = h->fenc->i_frame;
2654         if( h->fenc->i_type == X264_TYPE_IDR )
2655         {
2656             h->i_frame_num = 0;
2657             h->frames.i_last_idr = h->fenc->i_frame;
2658         }
2659     }
2660     h->sh.i_mmco_command_count =
2661     h->sh.i_mmco_remove_from_end = 0;
2662     h->b_ref_reorder[0] =
2663     h->b_ref_reorder[1] = 0;
2664     h->fdec->i_poc =
2665     h->fenc->i_poc = 2 * ( h->fenc->i_frame - X264_MAX( h->frames.i_last_idr, 0 ) );
2666
2667     /* ------------------- Setup frame context ----------------------------- */
2668     /* 5: Init data dependent of frame type */
2669     if( h->fenc->i_type == X264_TYPE_IDR )
2670     {
2671         /* reset ref pictures */
2672         i_nal_type    = NAL_SLICE_IDR;
2673         i_nal_ref_idc = NAL_PRIORITY_HIGHEST;
2674         h->sh.i_type = SLICE_TYPE_I;
2675         x264_reference_reset( h );
2676         h->frames.i_poc_last_open_gop = -1;
2677     }
2678     else if( h->fenc->i_type == X264_TYPE_I )
2679     {
2680         i_nal_type    = NAL_SLICE;
2681         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2682         h->sh.i_type = SLICE_TYPE_I;
2683         x264_reference_hierarchy_reset( h );
2684         if( h->param.b_open_gop )
2685             h->frames.i_poc_last_open_gop = h->fenc->b_keyframe ? h->fenc->i_poc : -1;
2686     }
2687     else if( h->fenc->i_type == X264_TYPE_P )
2688     {
2689         i_nal_type    = NAL_SLICE;
2690         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2691         h->sh.i_type = SLICE_TYPE_P;
2692         x264_reference_hierarchy_reset( h );
2693         h->frames.i_poc_last_open_gop = -1;
2694     }
2695     else if( h->fenc->i_type == X264_TYPE_BREF )
2696     {
2697         i_nal_type    = NAL_SLICE;
2698         i_nal_ref_idc = h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT ? NAL_PRIORITY_LOW : NAL_PRIORITY_HIGH;
2699         h->sh.i_type = SLICE_TYPE_B;
2700         x264_reference_hierarchy_reset( h );
2701     }
2702     else    /* B frame */
2703     {
2704         i_nal_type    = NAL_SLICE;
2705         i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
2706         h->sh.i_type = SLICE_TYPE_B;
2707     }
2708
2709     h->fdec->i_type = h->fenc->i_type;
2710     h->fdec->i_frame = h->fenc->i_frame;
2711     h->fenc->b_kept_as_ref =
2712     h->fdec->b_kept_as_ref = i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE && h->param.i_keyint_max > 1;
2713
2714     h->fdec->i_pts = h->fenc->i_pts;
2715     if( h->frames.i_bframe_delay )
2716     {
2717         int64_t *prev_reordered_pts = thread_current->frames.i_prev_reordered_pts;
2718         h->fdec->i_dts = h->i_frame > h->frames.i_bframe_delay
2719                        ? prev_reordered_pts[ (h->i_frame - h->frames.i_bframe_delay) % h->frames.i_bframe_delay ]
2720                        : h->fenc->i_reordered_pts - h->frames.i_bframe_delay_time;
2721         prev_reordered_pts[ h->i_frame % h->frames.i_bframe_delay ] = h->fenc->i_reordered_pts;
2722     }
2723     else
2724         h->fdec->i_dts = h->fenc->i_reordered_pts;
2725     if( h->fenc->i_type == X264_TYPE_IDR )
2726         h->i_last_idr_pts = h->fdec->i_pts;
2727
2728     /* ------------------- Init                ----------------------------- */
2729     /* build ref list 0/1 */
2730     x264_reference_build_list( h, h->fdec->i_poc );
2731
2732     /* ---------------------- Write the bitstream -------------------------- */
2733     /* Init bitstream context */
2734     if( h->param.b_sliced_threads )
2735     {
2736         for( int i = 0; i < h->param.i_threads; i++ )
2737         {
2738             bs_init( &h->thread[i]->out.bs, h->thread[i]->out.p_bitstream, h->thread[i]->out.i_bitstream );
2739             h->thread[i]->out.i_nal = 0;
2740         }
2741     }
2742     else
2743     {
2744         bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
2745         h->out.i_nal = 0;
2746     }
2747
2748     if( h->param.b_aud )
2749     {
2750         int pic_type;
2751
2752         if( h->sh.i_type == SLICE_TYPE_I )
2753             pic_type = 0;
2754         else if( h->sh.i_type == SLICE_TYPE_P )
2755             pic_type = 1;
2756         else if( h->sh.i_type == SLICE_TYPE_B )
2757             pic_type = 2;
2758         else
2759             pic_type = 7;
2760
2761         x264_nal_start( h, NAL_AUD, NAL_PRIORITY_DISPOSABLE );
2762         bs_write( &h->out.bs, 3, pic_type );
2763         bs_rbsp_trailing( &h->out.bs );
2764         if( x264_nal_end( h ) )
2765             return -1;
2766         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2767     }
2768
2769     h->i_nal_type = i_nal_type;
2770     h->i_nal_ref_idc = i_nal_ref_idc;
2771
2772     if( h->param.b_intra_refresh )
2773     {
2774         if( IS_X264_TYPE_I( h->fenc->i_type ) )
2775         {
2776             h->fdec->i_frames_since_pir = 0;
2777             h->b_queued_intra_refresh = 0;
2778             /* PIR is currently only supported with ref == 1, so any intra frame effectively refreshes
2779              * the whole frame and counts as an intra refresh. */
2780             h->fdec->f_pir_position = h->mb.i_mb_width;
2781         }
2782         else if( h->fenc->i_type == X264_TYPE_P )
2783         {
2784             int pocdiff = (h->fdec->i_poc - h->fref[0][0]->i_poc)/2;
2785             float increment = X264_MAX( ((float)h->mb.i_mb_width-1) / h->param.i_keyint_max, 1 );
2786             h->fdec->f_pir_position = h->fref[0][0]->f_pir_position;
2787             h->fdec->i_frames_since_pir = h->fref[0][0]->i_frames_since_pir + pocdiff;
2788             if( h->fdec->i_frames_since_pir >= h->param.i_keyint_max ||
2789                 (h->b_queued_intra_refresh && h->fdec->f_pir_position + 0.5 >= h->mb.i_mb_width) )
2790             {
2791                 h->fdec->f_pir_position = 0;
2792                 h->fdec->i_frames_since_pir = 0;
2793                 h->b_queued_intra_refresh = 0;
2794                 h->fenc->b_keyframe = 1;
2795             }
2796             h->fdec->i_pir_start_col = h->fdec->f_pir_position+0.5;
2797             h->fdec->f_pir_position += increment * pocdiff;
2798             h->fdec->i_pir_end_col = h->fdec->f_pir_position+0.5;
2799             /* If our intra refresh has reached the right side of the frame, we're done. */
2800             if( h->fdec->i_pir_end_col >= h->mb.i_mb_width - 1 )
2801                 h->fdec->f_pir_position = h->mb.i_mb_width;
2802         }
2803     }
2804
2805     if( h->fenc->b_keyframe )
2806     {
2807         /* Write SPS and PPS */
2808         if( h->param.b_repeat_headers )
2809         {
2810             /* generate sequence parameters */
2811             x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
2812             x264_sps_write( &h->out.bs, h->sps );
2813             if( x264_nal_end( h ) )
2814                 return -1;
2815             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2816
2817             /* generate picture parameters */
2818             x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
2819             x264_pps_write( &h->out.bs, h->pps );
2820             if( x264_nal_end( h ) )
2821                 return -1;
2822             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2823         }
2824
2825         /* buffering period sei is written in x264_encoder_frame_end */
2826     }
2827
2828     /* write extra sei */
2829     for( int i = 0; i < h->fenc->extra_sei.num_payloads; i++ )
2830     {
2831         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2832         x264_sei_write( &h->out.bs, h->fenc->extra_sei.payloads[i].payload, h->fenc->extra_sei.payloads[i].payload_size,
2833                         h->fenc->extra_sei.payloads[i].payload_type );
2834         if( x264_nal_end( h ) )
2835             return -1;
2836         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2837         if( h->fenc->extra_sei.sei_free && h->fenc->extra_sei.payloads[i].payload )
2838             h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads[i].payload );
2839     }
2840
2841     if( h->fenc->extra_sei.sei_free && h->fenc->extra_sei.payloads )
2842         h->fenc->extra_sei.sei_free( h->fenc->extra_sei.payloads );
2843
2844     if( h->fenc->b_keyframe )
2845     {
2846         if( h->param.b_repeat_headers && h->fenc->i_frame == 0 )
2847         {
2848             /* identify ourself */
2849             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2850             if( x264_sei_version_write( h, &h->out.bs ) )
2851                 return -1;
2852             if( x264_nal_end( h ) )
2853                 return -1;
2854             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2855         }
2856
2857         if( h->fenc->i_type != X264_TYPE_IDR )
2858         {
2859             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;
2860             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2861             x264_sei_recovery_point_write( h, &h->out.bs, time_to_recovery );
2862             if( x264_nal_end( h ) )
2863                 return -1;
2864             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2865         }
2866
2867         if ( h->param.i_frame_packing >= 0 )
2868         {
2869             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2870             x264_sei_frame_packing_write( h, &h->out.bs );
2871             if( x264_nal_end( h ) )
2872                 return -1;
2873             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2874         }
2875     }
2876
2877     /* generate sei pic timing */
2878     if( h->sps->vui.b_pic_struct_present || h->sps->vui.b_nal_hrd_parameters_present )
2879     {
2880         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2881         x264_sei_pic_timing_write( h, &h->out.bs );
2882         if( x264_nal_end( h ) )
2883             return -1;
2884         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2885     }
2886
2887     /* As required by Blu-ray. */
2888     if( !IS_X264_TYPE_B( h->fenc->i_type ) && h->b_sh_backup )
2889     {
2890         h->b_sh_backup = 0;
2891         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2892         x264_sei_dec_ref_pic_marking_write( h, &h->out.bs );
2893         if( x264_nal_end( h ) )
2894             return -1;
2895         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD - (h->param.b_annexb && h->out.i_nal-1);
2896     }
2897
2898     if( h->fenc->b_keyframe && h->param.b_intra_refresh )
2899         h->i_cpb_delay_pir_offset = h->fenc->i_cpb_delay;
2900
2901     /* Init the rate control */
2902     /* FIXME: Include slice header bit cost. */
2903     x264_ratecontrol_start( h, h->fenc->i_qpplus1, overhead*8 );
2904     i_global_qp = x264_ratecontrol_qp( h );
2905
2906     pic_out->i_qpplus1 =
2907     h->fdec->i_qpplus1 = i_global_qp + 1;
2908
2909     if( h->param.rc.b_stat_read && h->sh.i_type != SLICE_TYPE_I )
2910     {
2911         x264_reference_build_list_optimal( h );
2912         x264_reference_check_reorder( h );
2913     }
2914
2915     if( h->i_ref[0] )
2916         h->fdec->i_poc_l0ref0 = h->fref[0][0]->i_poc;
2917
2918     /* ------------------------ Create slice header  ----------------------- */
2919     x264_slice_init( h, i_nal_type, i_global_qp );
2920
2921     /*------------------------- Weights -------------------------------------*/
2922     if( h->sh.i_type == SLICE_TYPE_B )
2923         x264_macroblock_bipred_init( h );
2924
2925     x264_weighted_pred_init( h );
2926
2927     if( i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE )
2928         h->i_frame_num++;
2929
2930     /* Write frame */
2931     h->i_threadslice_start = 0;
2932     h->i_threadslice_end = h->mb.i_mb_height;
2933     if( h->i_thread_frames > 1 )
2934     {
2935         x264_threadpool_run( h->threadpool, (void*)x264_slices_write, h );
2936         h->b_thread_active = 1;
2937     }
2938     else if( h->param.b_sliced_threads )
2939     {
2940         if( x264_threaded_slices_write( h ) )
2941             return -1;
2942     }
2943     else
2944         if( (intptr_t)x264_slices_write( h ) )
2945             return -1;
2946
2947     return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
2948 }
2949
2950 static int x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
2951                                    x264_nal_t **pp_nal, int *pi_nal,
2952                                    x264_picture_t *pic_out )
2953 {
2954     char psz_message[80];
2955
2956     if( h->b_thread_active )
2957     {
2958         h->b_thread_active = 0;
2959         if( (intptr_t)x264_threadpool_wait( h->threadpool, h ) )
2960             return -1;
2961     }
2962     if( !h->out.i_nal )
2963     {
2964         pic_out->i_type = X264_TYPE_AUTO;
2965         return 0;
2966     }
2967
2968     x264_emms();
2969     /* generate sei buffering period and insert it into place */
2970     if( h->fenc->b_keyframe && h->sps->vui.b_nal_hrd_parameters_present )
2971     {
2972         x264_hrd_fullness( h );
2973         x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2974         x264_sei_buffering_period_write( h, &h->out.bs );
2975         if( x264_nal_end( h ) )
2976            return -1;
2977         /* buffering period sei must follow AUD, SPS and PPS and precede all other SEIs */
2978         int idx = 0;
2979         while( h->out.nal[idx].i_type == NAL_AUD ||
2980                h->out.nal[idx].i_type == NAL_SPS ||
2981                h->out.nal[idx].i_type == NAL_PPS )
2982             idx++;
2983         x264_nal_t nal_tmp = h->out.nal[h->out.i_nal-1];
2984         memmove( &h->out.nal[idx+1], &h->out.nal[idx], (h->out.i_nal-idx-1)*sizeof(x264_nal_t) );
2985         h->out.nal[idx] = nal_tmp;
2986     }
2987
2988     int frame_size = x264_encoder_encapsulate_nals( h, 0 );
2989     if( frame_size < 0 )
2990         return -1;
2991
2992     /* Set output picture properties */
2993     pic_out->i_type = h->fenc->i_type;
2994
2995     pic_out->b_keyframe = h->fenc->b_keyframe;
2996     pic_out->i_pic_struct = h->fenc->i_pic_struct;
2997
2998     pic_out->i_pts = h->fdec->i_pts;
2999     pic_out->i_dts = h->fdec->i_dts;
3000
3001     if( pic_out->i_pts < pic_out->i_dts )
3002         x264_log( h, X264_LOG_WARNING, "invalid DTS: PTS is less than DTS\n" );
3003
3004     pic_out->img.i_csp = X264_CSP_NV12;
3005 #if HIGH_BIT_DEPTH
3006     pic_out->img.i_csp |= X264_CSP_HIGH_DEPTH;
3007 #endif
3008     pic_out->img.i_plane = h->fdec->i_plane;
3009     for( int i = 0; i < 2; i++ )
3010     {
3011         pic_out->img.i_stride[i] = h->fdec->i_stride[i] * sizeof(pixel);
3012         pic_out->img.plane[i] = (uint8_t*)h->fdec->plane[i];
3013     }
3014
3015     x264_frame_push_unused( thread_current, h->fenc );
3016
3017     /* ---------------------- Update encoder state ------------------------- */
3018
3019     /* update rc */
3020     int filler = 0;
3021     if( x264_ratecontrol_end( h, frame_size * 8, &filler ) < 0 )
3022         return -1;
3023
3024     pic_out->hrd_timing = h->fenc->hrd_timing;
3025
3026     while( filler > 0 )
3027     {
3028         int f, overhead;
3029         overhead = (FILLER_OVERHEAD - h->param.b_annexb);
3030         if( h->param.i_slice_max_size && filler > h->param.i_slice_max_size )
3031         {
3032             int next_size = filler - h->param.i_slice_max_size;
3033             int overflow = X264_MAX( overhead - next_size, 0 );
3034             f = h->param.i_slice_max_size - overhead - overflow;
3035         }
3036         else
3037             f = X264_MAX( 0, filler - overhead );
3038
3039         x264_nal_start( h, NAL_FILLER, NAL_PRIORITY_DISPOSABLE );
3040         x264_filler_write( h, &h->out.bs, f );
3041         if( x264_nal_end( h ) )
3042             return -1;
3043         int total_size = x264_encoder_encapsulate_nals( h, h->out.i_nal-1 );
3044         if( total_size < 0 )
3045             return -1;
3046         frame_size += total_size;
3047         filler -= total_size;
3048     }
3049
3050     /* End bitstream, set output  */
3051     *pi_nal = h->out.i_nal;
3052     *pp_nal = h->out.nal;
3053
3054     h->out.i_nal = 0;
3055
3056     x264_noise_reduction_update( h );
3057
3058     /* ---------------------- Compute/Print statistics --------------------- */
3059     x264_thread_sync_stat( h, h->thread[0] );
3060
3061     /* Slice stat */
3062     h->stat.i_frame_count[h->sh.i_type]++;
3063     h->stat.i_frame_size[h->sh.i_type] += frame_size;
3064     h->stat.f_frame_qp[h->sh.i_type] += h->fdec->f_qp_avg_aq;
3065
3066     for( int i = 0; i < X264_MBTYPE_MAX; i++ )
3067         h->stat.i_mb_count[h->sh.i_type][i] += h->stat.frame.i_mb_count[i];
3068     for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3069         h->stat.i_mb_partition[h->sh.i_type][i] += h->stat.frame.i_mb_partition[i];
3070     for( int i = 0; i < 2; i++ )
3071         h->stat.i_mb_count_8x8dct[i] += h->stat.frame.i_mb_count_8x8dct[i];
3072     for( int i = 0; i < 6; i++ )
3073         h->stat.i_mb_cbp[i] += h->stat.frame.i_mb_cbp[i];
3074     for( int i = 0; i < 4; i++ )
3075         for( int j = 0; j < 13; j++ )
3076             h->stat.i_mb_pred_mode[i][j] += h->stat.frame.i_mb_pred_mode[i][j];
3077     if( h->sh.i_type != SLICE_TYPE_I )
3078         for( int i_list = 0; i_list < 2; i_list++ )
3079             for( int i = 0; i < X264_REF_MAX*2; i++ )
3080                 h->stat.i_mb_count_ref[h->sh.i_type][i_list][i] += h->stat.frame.i_mb_count_ref[i_list][i];
3081     if( h->sh.i_type == SLICE_TYPE_P && h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE )
3082     {
3083         h->stat.i_wpred[0] += !!h->sh.weight[0][0].weightfn;
3084         h->stat.i_wpred[1] += !!h->sh.weight[0][1].weightfn || !!h->sh.weight[0][2].weightfn;
3085     }
3086     if( h->sh.i_type == SLICE_TYPE_B )
3087     {
3088         h->stat.i_direct_frames[ h->sh.b_direct_spatial_mv_pred ] ++;
3089         if( h->mb.b_direct_auto_write )
3090         {
3091             //FIXME somewhat arbitrary time constants
3092             if( h->stat.i_direct_score[0] + h->stat.i_direct_score[1] > h->mb.i_mb_count )
3093                 for( int i = 0; i < 2; i++ )
3094                     h->stat.i_direct_score[i] = h->stat.i_direct_score[i] * 9/10;
3095             for( int i = 0; i < 2; i++ )
3096                 h->stat.i_direct_score[i] += h->stat.frame.i_direct_score[i];
3097         }
3098     }
3099     else
3100         h->stat.i_consecutive_bframes[h->fenc->i_bframes]++;
3101
3102     psz_message[0] = '\0';
3103     double dur = h->fenc->f_duration;
3104     h->stat.f_frame_duration[h->sh.i_type] += dur;
3105     if( h->param.analyse.b_psnr )
3106     {
3107         int64_t ssd[3] =
3108         {
3109             h->stat.frame.i_ssd[0],
3110             h->stat.frame.i_ssd[1],
3111             h->stat.frame.i_ssd[2],
3112         };
3113
3114         h->stat.f_ssd_global[h->sh.i_type]   += dur * (ssd[0] + ssd[1] + ssd[2]);
3115         h->stat.f_psnr_average[h->sh.i_type] += dur * x264_psnr( ssd[0] + ssd[1] + ssd[2], 3 * h->param.i_width * h->param.i_height / 2 );
3116         h->stat.f_psnr_mean_y[h->sh.i_type]  += dur * x264_psnr( ssd[0], h->param.i_width * h->param.i_height );
3117         h->stat.f_psnr_mean_u[h->sh.i_type]  += dur * x264_psnr( ssd[1], h->param.i_width * h->param.i_height / 4 );
3118         h->stat.f_psnr_mean_v[h->sh.i_type]  += dur * x264_psnr( ssd[2], h->param.i_width * h->param.i_height / 4 );
3119
3120         snprintf( psz_message, 80, " PSNR Y:%5.2f U:%5.2f V:%5.2f",
3121                   x264_psnr( ssd[0], h->param.i_width * h->param.i_height ),
3122                   x264_psnr( ssd[1], h->param.i_width * h->param.i_height / 4),
3123                   x264_psnr( ssd[2], h->param.i_width * h->param.i_height / 4) );
3124     }
3125
3126     if( h->param.analyse.b_ssim )
3127     {
3128         double ssim_y = h->stat.frame.f_ssim
3129                       / (((h->param.i_width-6)>>2) * ((h->param.i_height-6)>>2));
3130         h->stat.f_ssim_mean_y[h->sh.i_type] += ssim_y * dur;
3131         snprintf( psz_message + strlen(psz_message), 80 - strlen(psz_message),
3132                   " SSIM Y:%.5f", ssim_y );
3133     }
3134     psz_message[79] = '\0';
3135
3136     x264_log( h, X264_LOG_DEBUG,
3137                   "frame=%4d QP=%.2f NAL=%d Slice:%c Poc:%-3d I:%-4d P:%-4d SKIP:%-4d size=%d bytes%s\n",
3138               h->i_frame,
3139               h->fdec->f_qp_avg_aq,
3140               h->i_nal_ref_idc,
3141               h->sh.i_type == SLICE_TYPE_I ? 'I' : (h->sh.i_type == SLICE_TYPE_P ? 'P' : 'B' ),
3142               h->fdec->i_poc,
3143               h->stat.frame.i_mb_count_i,
3144               h->stat.frame.i_mb_count_p,
3145               h->stat.frame.i_mb_count_skip,
3146               frame_size,
3147               psz_message );
3148
3149     // keep stats all in one place
3150     x264_thread_sync_stat( h->thread[0], h );
3151     // for the use of the next frame
3152     x264_thread_sync_stat( thread_current, h );
3153
3154 #ifdef DEBUG_MB_TYPE
3155 {
3156     static const char mb_chars[] = { 'i', 'i', 'I', 'C', 'P', '8', 'S',
3157         'D', '<', 'X', 'B', 'X', '>', 'B', 'B', 'B', 'B', '8', 'S' };
3158     for( int mb_xy = 0; mb_xy < h->mb.i_mb_width * h->mb.i_mb_height; mb_xy++ )
3159     {
3160         if( h->mb.type[mb_xy] < X264_MBTYPE_MAX && h->mb.type[mb_xy] >= 0 )
3161             fprintf( stderr, "%c ", mb_chars[ h->mb.type[mb_xy] ] );
3162         else
3163             fprintf( stderr, "? " );
3164
3165         if( (mb_xy+1) % h->mb.i_mb_width == 0 )
3166             fprintf( stderr, "\n" );
3167     }
3168 }
3169 #endif
3170
3171     /* Remove duplicates, must be done near the end as breaks h->fref0 array
3172      * by freeing some of its pointers. */
3173     for( int i = 0; i < h->i_ref[0]; i++ )
3174         if( h->fref[0][i] && h->fref[0][i]->b_duplicate )
3175         {
3176             x264_frame_push_blank_unused( h, h->fref[0][i] );
3177             h->fref[0][i] = 0;
3178         }
3179
3180     if( h->param.psz_dump_yuv )
3181         x264_frame_dump( h );
3182     x264_emms();
3183
3184     return frame_size;
3185 }
3186
3187 static void x264_print_intra( int64_t *i_mb_count, double i_count, int b_print_pcm, char *intra )
3188 {
3189     intra += sprintf( intra, "I16..4%s: %4.1f%% %4.1f%% %4.1f%%",
3190         b_print_pcm ? "..PCM" : "",
3191         i_mb_count[I_16x16]/ i_count,
3192         i_mb_count[I_8x8]  / i_count,
3193         i_mb_count[I_4x4]  / i_count );
3194     if( b_print_pcm )
3195         sprintf( intra, " %4.1f%%", i_mb_count[I_PCM]  / i_count );
3196 }
3197
3198 /****************************************************************************
3199  * x264_encoder_close:
3200  ****************************************************************************/
3201 void    x264_encoder_close  ( x264_t *h )
3202 {
3203     int64_t i_yuv_size = 3 * h->param.i_width * h->param.i_height / 2;
3204     int64_t i_mb_count_size[2][7] = {{0}};
3205     char buf[200];
3206     int b_print_pcm = h->stat.i_mb_count[SLICE_TYPE_I][I_PCM]
3207                    || h->stat.i_mb_count[SLICE_TYPE_P][I_PCM]
3208                    || h->stat.i_mb_count[SLICE_TYPE_B][I_PCM];
3209
3210     x264_lookahead_delete( h );
3211
3212     if( h->param.i_threads > 1 )
3213         x264_threadpool_delete( h->threadpool );
3214     if( h->i_thread_frames > 1 )
3215     {
3216         for( int i = 0; i < h->i_thread_frames; i++ )
3217             if( h->thread[i]->b_thread_active )
3218             {
3219                 assert( h->thread[i]->fenc->i_reference_count == 1 );
3220                 x264_frame_delete( h->thread[i]->fenc );
3221             }
3222
3223         x264_t *thread_prev = h->thread[h->i_thread_phase];
3224         x264_thread_sync_ratecontrol( h, thread_prev, h );
3225         x264_thread_sync_ratecontrol( thread_prev, thread_prev, h );
3226         h->i_frame = thread_prev->i_frame + 1 - h->i_thread_frames;
3227     }
3228     h->i_frame++;
3229
3230     /* Slices used and PSNR */
3231     for( int i = 0; i < 3; i++ )
3232     {
3233         static const uint8_t slice_order[] = { SLICE_TYPE_I, SLICE_TYPE_P, SLICE_TYPE_B };
3234         int i_slice = slice_order[i];
3235
3236         if( h->stat.i_frame_count[i_slice] > 0 )
3237         {
3238             int i_count = h->stat.i_frame_count[i_slice];
3239             double dur =  h->stat.f_frame_duration[i_slice];
3240             if( h->param.analyse.b_psnr )
3241             {
3242                 x264_log( h, X264_LOG_INFO,
3243                           "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",
3244                           slice_type_to_char[i_slice],
3245                           i_count,
3246                           h->stat.f_frame_qp[i_slice] / i_count,
3247                           (double)h->stat.i_frame_size[i_slice] / i_count,
3248                           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,
3249                           h->stat.f_psnr_average[i_slice] / dur,
3250                           x264_psnr( h->stat.f_ssd_global[i_slice], dur * i_yuv_size ) );
3251             }
3252             else
3253             {
3254                 x264_log( h, X264_LOG_INFO,
3255                           "frame %c:%-5d Avg QP:%5.2f  size:%6.0f\n",
3256                           slice_type_to_char[i_slice],
3257                           i_count,
3258                           h->stat.f_frame_qp[i_slice] / i_count,
3259                           (double)h->stat.i_frame_size[i_slice] / i_count );
3260             }
3261         }
3262     }
3263     if( h->param.i_bframe && h->stat.i_frame_count[SLICE_TYPE_B] )
3264     {
3265         char *p = buf;
3266         int den = 0;
3267         // weight by number of frames (including the I/P-frames) that are in a sequence of N B-frames
3268         for( int i = 0; i <= h->param.i_bframe; i++ )
3269             den += (i+1) * h->stat.i_consecutive_bframes[i];
3270         for( int i = 0; i <= h->param.i_bframe; i++ )
3271             p += sprintf( p, " %4.1f%%", 100. * (i+1) * h->stat.i_consecutive_bframes[i] / den );
3272         x264_log( h, X264_LOG_INFO, "consecutive B-frames:%s\n", buf );
3273     }
3274
3275     for( int i_type = 0; i_type < 2; i_type++ )
3276         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3277         {
3278             if( i == D_DIRECT_8x8 ) continue; /* direct is counted as its own type */
3279             i_mb_count_size[i_type][x264_mb_partition_pixel_table[i]] += h->stat.i_mb_partition[i_type][i];
3280         }
3281
3282     /* MB types used */
3283     if( h->stat.i_frame_count[SLICE_TYPE_I] > 0 )
3284     {
3285         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_I];
3286         double i_count = h->stat.i_frame_count[SLICE_TYPE_I] * h->mb.i_mb_count / 100.0;
3287         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3288         x264_log( h, X264_LOG_INFO, "mb I  %s\n", buf );
3289     }
3290     if( h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3291     {
3292         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_P];
3293         double i_count = h->stat.i_frame_count[SLICE_TYPE_P] * h->mb.i_mb_count / 100.0;
3294         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_P];
3295         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3296         x264_log( h, X264_LOG_INFO,
3297                   "mb P  %s  P16..4: %4.1f%% %4.1f%% %4.1f%% %4.1f%% %4.1f%%    skip:%4.1f%%\n",
3298                   buf,
3299                   i_mb_size[PIXEL_16x16] / (i_count*4),
3300                   (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3301                   i_mb_size[PIXEL_8x8] / (i_count*4),
3302                   (i_mb_size[PIXEL_8x4] + i_mb_size[PIXEL_4x8]) / (i_count*4),
3303                   i_mb_size[PIXEL_4x4] / (i_count*4),
3304                   i_mb_count[P_SKIP] / i_count );
3305     }
3306     if( h->stat.i_frame_count[SLICE_TYPE_B] > 0 )
3307     {
3308         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_B];
3309         double i_count = h->stat.i_frame_count[SLICE_TYPE_B] * h->mb.i_mb_count / 100.0;
3310         double i_mb_list_count;
3311         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_B];
3312         int64_t list_count[3] = {0}; /* 0 == L0, 1 == L1, 2 == BI */
3313         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
3314         for( int i = 0; i < X264_PARTTYPE_MAX; i++ )
3315             for( int j = 0; j < 2; j++ )
3316             {
3317                 int l0 = x264_mb_type_list_table[i][0][j];
3318                 int l1 = x264_mb_type_list_table[i][1][j];
3319                 if( l0 || l1 )
3320                     list_count[l1+l0*l1] += h->stat.i_mb_count[SLICE_TYPE_B][i] * 2;
3321             }
3322         list_count[0] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L0_8x8];
3323         list_count[1] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L1_8x8];
3324         list_count[2] += h->stat.i_mb_partition[SLICE_TYPE_B][D_BI_8x8];
3325         i_mb_count[B_DIRECT] += (h->stat.i_mb_partition[SLICE_TYPE_B][D_DIRECT_8x8]+2)/4;
3326         i_mb_list_count = (list_count[0] + list_count[1] + list_count[2]) / 100.0;
3327         x264_log( h, X264_LOG_INFO,
3328                   "mb B  %s  B16..8: %4.1f%% %4.1f%% %4.1f%%  direct:%4.1f%%  skip:%4.1f%%  L0:%4.1f%% L1:%4.1f%% BI:%4.1f%%\n",
3329                   buf,
3330                   i_mb_size[PIXEL_16x16] / (i_count*4),
3331                   (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
3332                   i_mb_size[PIXEL_8x8] / (i_count*4),
3333                   i_mb_count[B_DIRECT] / i_count,
3334                   i_mb_count[B_SKIP]   / i_count,
3335                   list_count[0] / i_mb_list_count,
3336                   list_count[1] / i_mb_list_count,
3337                   list_count[2] / i_mb_list_count );
3338     }
3339
3340     x264_ratecontrol_summary( h );
3341
3342     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 )
3343     {
3344 #define SUM3(p) (p[SLICE_TYPE_I] + p[SLICE_TYPE_P] + p[SLICE_TYPE_B])
3345 #define SUM3b(p,o) (p[SLICE_TYPE_I][o] + p[SLICE_TYPE_P][o] + p[SLICE_TYPE_B][o])
3346         int64_t i_i8x8 = SUM3b( h->stat.i_mb_count, I_8x8 );
3347         int64_t i_intra = i_i8x8 + SUM3b( h->stat.i_mb_count, I_4x4 )
3348                                  + SUM3b( h->stat.i_mb_count, I_16x16 );
3349         int64_t i_all_intra = i_intra + SUM3b( h->stat.i_mb_count, I_PCM);
3350         const int i_count = h->stat.i_frame_count[SLICE_TYPE_I] +
3351                             h->stat.i_frame_count[SLICE_TYPE_P] +
3352                             h->stat.i_frame_count[SLICE_TYPE_B];
3353         const double duration = h->stat.f_frame_duration[SLICE_TYPE_I] +
3354                                 h->stat.f_frame_duration[SLICE_TYPE_P] +
3355                                 h->stat.f_frame_duration[SLICE_TYPE_B];
3356         int64_t i_mb_count = (int64_t)i_count * h->mb.i_mb_count;
3357         float f_bitrate = SUM3(h->stat.i_frame_size) / duration / 125;
3358
3359         if( h->pps->b_transform_8x8_mode )
3360         {
3361             buf[0] = 0;
3362             if( h->stat.i_mb_count_8x8dct[0] )
3363                 sprintf( buf, " inter:%.1f%%", 100. * h->stat.i_mb_count_8x8dct[1] / h->stat.i_mb_count_8x8dct[0] );
3364             x264_log( h, X264_LOG_INFO, "8x8 transform intra:%.1f%%%s\n", 100. * i_i8x8 / i_intra, buf );
3365         }
3366
3367         if( (h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO ||
3368             (h->stat.i_direct_frames[0] && h->stat.i_direct_frames[1]))
3369             && h->stat.i_frame_count[SLICE_TYPE_B] )
3370         {
3371             x264_log( h, X264_LOG_INFO, "direct mvs  spatial:%.1f%% temporal:%.1f%%\n",
3372                       h->stat.i_direct_frames[1] * 100. / h->stat.i_frame_count[SLICE_TYPE_B],
3373                       h->stat.i_direct_frames[0] * 100. / h->stat.i_frame_count[SLICE_TYPE_B] );
3374         }
3375
3376         buf[0] = 0;
3377         if( i_mb_count != i_all_intra )
3378             sprintf( buf, " inter: %.1f%% %.1f%% %.1f%%",
3379                      h->stat.i_mb_cbp[1] * 100.0 / ((i_mb_count - i_all_intra)*4),
3380                      h->stat.i_mb_cbp[3] * 100.0 / ((i_mb_count - i_all_intra)  ),
3381                      h->stat.i_mb_cbp[5] * 100.0 / ((i_mb_count - i_all_intra)) );
3382         x264_log( h, X264_LOG_INFO, "coded y,uvDC,uvAC intra: %.1f%% %.1f%% %.1f%%%s\n",
3383                   h->stat.i_mb_cbp[0] * 100.0 / (i_all_intra*4),
3384                   h->stat.i_mb_cbp[2] * 100.0 / (i_all_intra  ),
3385                   h->stat.i_mb_cbp[4] * 100.0 / (i_all_intra  ), buf );
3386
3387         int64_t fixed_pred_modes[4][9] = {{0}};
3388         int64_t sum_pred_modes[4] = {0};
3389         for( int i = 0; i <= I_PRED_16x16_DC_128; i++ )
3390         {
3391             fixed_pred_modes[0][x264_mb_pred_mode16x16_fix[i]] += h->stat.i_mb_pred_mode[0][i];
3392             sum_pred_modes[0] += h->stat.i_mb_pred_mode[0][i];
3393         }
3394         if( sum_pred_modes[0] )
3395             x264_log( h, X264_LOG_INFO, "i16 v,h,dc,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3396                       fixed_pred_modes[0][0] * 100.0 / sum_pred_modes[0],
3397                       fixed_pred_modes[0][1] * 100.0 / sum_pred_modes[0],
3398                       fixed_pred_modes[0][2] * 100.0 / sum_pred_modes[0],
3399                       fixed_pred_modes[0][3] * 100.0 / sum_pred_modes[0] );
3400         for( int i = 1; i <= 2; i++ )
3401         {
3402             for( int j = 0; j <= I_PRED_8x8_DC_128; j++ )
3403             {
3404                 fixed_pred_modes[i][x264_mb_pred_mode4x4_fix(j)] += h->stat.i_mb_pred_mode[i][j];
3405                 sum_pred_modes[i] += h->stat.i_mb_pred_mode[i][j];
3406             }
3407             if( sum_pred_modes[i] )
3408                 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,
3409                           fixed_pred_modes[i][0] * 100.0 / sum_pred_modes[i],
3410                           fixed_pred_modes[i][1] * 100.0 / sum_pred_modes[i],
3411                           fixed_pred_modes[i][2] * 100.0 / sum_pred_modes[i],
3412                           fixed_pred_modes[i][3] * 100.0 / sum_pred_modes[i],
3413                           fixed_pred_modes[i][4] * 100.0 / sum_pred_modes[i],
3414                           fixed_pred_modes[i][5] * 100.0 / sum_pred_modes[i],
3415                           fixed_pred_modes[i][6] * 100.0 / sum_pred_modes[i],
3416                           fixed_pred_modes[i][7] * 100.0 / sum_pred_modes[i],
3417                           fixed_pred_modes[i][8] * 100.0 / sum_pred_modes[i] );
3418         }
3419         for( int i = 0; i <= I_PRED_CHROMA_DC_128; i++ )
3420         {
3421             fixed_pred_modes[3][x264_mb_pred_mode8x8c_fix[i]] += h->stat.i_mb_pred_mode[3][i];
3422             sum_pred_modes[3] += h->stat.i_mb_pred_mode[3][i];
3423         }
3424         if( sum_pred_modes[3] )
3425             x264_log( h, X264_LOG_INFO, "i8c dc,h,v,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
3426                       fixed_pred_modes[3][0] * 100.0 / sum_pred_modes[3],
3427                       fixed_pred_modes[3][1] * 100.0 / sum_pred_modes[3],
3428                       fixed_pred_modes[3][2] * 100.0 / sum_pred_modes[3],
3429                       fixed_pred_modes[3][3] * 100.0 / sum_pred_modes[3] );
3430
3431         if( h->param.analyse.i_weighted_pred >= X264_WEIGHTP_SIMPLE && h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
3432             x264_log( h, X264_LOG_INFO, "Weighted P-Frames: Y:%.1f%% UV:%.1f%%\n",
3433                       h->stat.i_wpred[0] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P],
3434                       h->stat.i_wpred[1] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P] );
3435
3436         for( int i_list = 0; i_list < 2; i_list++ )
3437             for( int i_slice = 0; i_slice < 2; i_slice++ )
3438             {
3439                 char *p = buf;
3440                 int64_t i_den = 0;
3441                 int i_max = 0;
3442                 for( int i = 0; i < X264_REF_MAX*2; i++ )
3443                     if( h->stat.i_mb_count_ref[i_slice][i_list][i] )
3444                     {
3445                         i_den += h->stat.i_mb_count_ref[i_slice][i_list][i];
3446                         i_max = i;
3447                     }
3448                 if( i_max == 0 )
3449                     continue;
3450                 for( int i = 0; i <= i_max; i++ )
3451                     p += sprintf( p, " %4.1f%%", 100. * h->stat.i_mb_count_ref[i_slice][i_list][i] / i_den );
3452                 x264_log( h, X264_LOG_INFO, "ref %c L%d:%s\n", "PB"[i_slice], i_list, buf );
3453             }
3454
3455         if( h->param.analyse.b_ssim )
3456         {
3457             float ssim = SUM3( h->stat.f_ssim_mean_y ) / duration;
3458             x264_log( h, X264_LOG_INFO, "SSIM Mean Y:%.7f (%6.3fdb)\n", ssim, x264_ssim( ssim ) );
3459         }
3460         if( h->param.analyse.b_psnr )
3461         {
3462             x264_log( h, X264_LOG_INFO,
3463                       "PSNR Mean Y:%6.3f U:%6.3f V:%6.3f Avg:%6.3f Global:%6.3f kb/s:%.2f\n",
3464                       SUM3( h->stat.f_psnr_mean_y ) / duration,
3465                       SUM3( h->stat.f_psnr_mean_u ) / duration,
3466                       SUM3( h->stat.f_psnr_mean_v ) / duration,
3467                       SUM3( h->stat.f_psnr_average ) / duration,
3468                       x264_psnr( SUM3( h->stat.f_ssd_global ), duration * i_yuv_size ),
3469                       f_bitrate );
3470         }
3471         else
3472             x264_log( h, X264_LOG_INFO, "kb/s:%.2f\n", f_bitrate );
3473     }
3474
3475     /* rc */
3476     x264_ratecontrol_delete( h );
3477
3478     /* param */
3479     if( h->param.rc.psz_stat_out )
3480         free( h->param.rc.psz_stat_out );
3481     if( h->param.rc.psz_stat_in )
3482         free( h->param.rc.psz_stat_in );
3483
3484     x264_cqm_delete( h );
3485     x264_free( h->nal_buffer );
3486     x264_analyse_free_costs( h );
3487
3488     if( h->i_thread_frames > 1)
3489         h = h->thread[h->i_thread_phase];
3490
3491     /* frames */
3492     x264_frame_delete_list( h->frames.unused[0] );
3493     x264_frame_delete_list( h->frames.unused[1] );
3494     x264_frame_delete_list( h->frames.current );
3495     x264_frame_delete_list( h->frames.blank_unused );
3496
3497     h = h->thread[0];
3498
3499     for( int i = 0; i < h->i_thread_frames; i++ )
3500         if( h->thread[i]->b_thread_active )
3501             for( int j = 0; j < h->thread[i]->i_ref[0]; j++ )
3502                 if( h->thread[i]->fref[0][j] && h->thread[i]->fref[0][j]->b_duplicate )
3503                     x264_frame_delete( h->thread[i]->fref[0][j] );
3504
3505     for( int i = h->param.i_threads - 1; i >= 0; i-- )
3506     {
3507         x264_frame_t **frame;
3508
3509         if( !h->param.b_sliced_threads || i == 0 )
3510         {
3511             for( frame = h->thread[i]->frames.reference; *frame; frame++ )
3512             {
3513                 assert( (*frame)->i_reference_count > 0 );
3514                 (*frame)->i_reference_count--;
3515                 if( (*frame)->i_reference_count == 0 )
3516                     x264_frame_delete( *frame );
3517             }
3518             frame = &h->thread[i]->fdec;
3519             if( *frame )
3520             {
3521                 assert( (*frame)->i_reference_count > 0 );
3522                 (*frame)->i_reference_count--;
3523                 if( (*frame)->i_reference_count == 0 )
3524                     x264_frame_delete( *frame );
3525             }
3526             x264_macroblock_cache_free( h->thread[i] );
3527         }
3528         x264_macroblock_thread_free( h->thread[i], 0 );
3529         x264_free( h->thread[i]->out.p_bitstream );
3530         x264_free( h->thread[i]->out.nal);
3531         x264_free( h->thread[i] );
3532     }
3533 }
3534
3535 int x264_encoder_delayed_frames( x264_t *h )
3536 {
3537     int delayed_frames = 0;
3538     if( h->i_thread_frames > 1 )
3539     {
3540         for( int i = 0; i < h->i_thread_frames; i++ )
3541             delayed_frames += h->thread[i]->b_thread_active;
3542         h = h->thread[h->i_thread_phase];
3543     }
3544     for( int i = 0; h->frames.current[i]; i++ )
3545         delayed_frames++;
3546     x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
3547     x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
3548     x264_pthread_mutex_lock( &h->lookahead->next.mutex );
3549     delayed_frames += h->lookahead->ifbuf.i_size + h->lookahead->next.i_size + h->lookahead->ofbuf.i_size;
3550     x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
3551     x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
3552     x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
3553     return delayed_frames;
3554 }
3555
3556 int x264_encoder_maximum_delayed_frames( x264_t *h )
3557 {
3558     return h->frames.i_delay;
3559 }