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

   1 /*****************************************************************************
   2  * x264: h264 encoder
   3  *****************************************************************************
   4  * Copyright (C) 2003-2008 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
  25 #include <math.h>
  26
  27 #include "common/common.h"
  28 #include "common/cpu.h"
  29
  30 #include "set.h"
  31 #include "analyse.h"
  32 #include "ratecontrol.h"
  33 #include "macroblock.h"
  34
  35 #if VISUALIZE
  36 #include "common/visualize.h"
  37 #endif
  38
  39 //#define DEBUG_MB_TYPE
  40
  41 #define NALU_OVERHEAD 5 // startcode + NAL type costs 5 bytes per frame
  42
  43 #define bs_write_ue bs_write_ue_big
  44
  45 static int x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
  46                                    x264_nal_t **pp_nal, int *pi_nal,
  47                                    x264_picture_t *pic_out );
  48
  49 /****************************************************************************
  50  *
  51  ******************************* x264 libs **********************************
  52  *
  53  ****************************************************************************/
  54 static float x264_psnr( int64_t i_sqe, int64_t i_size )
  55 {
  56     double f_mse = (double)i_sqe / ((double)65025.0 * (double)i_size);
  57     if( f_mse <= 0.0000000001 ) /* Max 100dB */
  58         return 100;
  59
  60     return (float)(-10.0 * log( f_mse ) / log( 10.0 ));
  61 }
  62
  63 static void x264_frame_dump( x264_t *h )
  64 {
  65     FILE *f = fopen( h->param.psz_dump_yuv, "r+b" );
  66     int i, y;
  67     if( !f )
  68         return;
  69     /* Write the frame in display order */
  70     fseek( f, (uint64_t)h->fdec->i_frame * h->param.i_height * h->param.i_width * 3/2, SEEK_SET );
  71     for( i = 0; i < h->fdec->i_plane; i++ )
  72         for( y = 0; y < h->param.i_height >> !!i; y++ )
  73             fwrite( &h->fdec->plane[i][y*h->fdec->i_stride[i]], 1, h->param.i_width >> !!i, f );
  74     fclose( f );
  75 }
  76
  77
  78 /* Fill "default" values */
  79 static void x264_slice_header_init( x264_t *h, x264_slice_header_t *sh,
  80                                     x264_sps_t *sps, x264_pps_t *pps,
  81                                     int i_idr_pic_id, int i_frame, int i_qp )
  82 {
  83     x264_param_t *param = &h->param;
  84     int i;
  85
  86     /* First we fill all field */
  87     sh->sps = sps;
  88     sh->pps = pps;
  89
  90     sh->i_first_mb  = 0;
  91     sh->i_last_mb   = h->mb.i_mb_count - 1;
  92     sh->i_pps_id    = pps->i_id;
  93
  94     sh->i_frame_num = i_frame;
  95
  96     sh->b_mbaff = h->param.b_interlaced;
  97     sh->b_field_pic = 0;    /* no field support for now */
  98     sh->b_bottom_field = 0; /* not yet used */
  99
 100     sh->i_idr_pic_id = i_idr_pic_id;
 101
 102     /* poc stuff, fixed later */
 103     sh->i_poc_lsb = 0;
 104     sh->i_delta_poc_bottom = 0;
 105     sh->i_delta_poc[0] = 0;
 106     sh->i_delta_poc[1] = 0;
 107
 108     sh->i_redundant_pic_cnt = 0;
 109
 110     if( !h->mb.b_direct_auto_read )
 111     {
 112         if( h->mb.b_direct_auto_write )
 113             sh->b_direct_spatial_mv_pred = ( h->stat.i_direct_score[1] > h->stat.i_direct_score[0] );
 114         else
 115             sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
 116     }
 117     /* else b_direct_spatial_mv_pred was read from the 2pass statsfile */
 118
 119     sh->b_num_ref_idx_override = 0;
 120     sh->i_num_ref_idx_l0_active = 1;
 121     sh->i_num_ref_idx_l1_active = 1;
 122
 123     sh->b_ref_pic_list_reordering_l0 = h->b_ref_reorder[0];
 124     sh->b_ref_pic_list_reordering_l1 = h->b_ref_reorder[1];
 125
 126     /* If the ref list isn't in the default order, construct reordering header */
 127     /* List1 reordering isn't needed yet */
 128     if( sh->b_ref_pic_list_reordering_l0 )
 129     {
 130         int pred_frame_num = i_frame;
 131         for( i = 0; i < h->i_ref0; i++ )
 132         {
 133             int diff = h->fref0[i]->i_frame_num - pred_frame_num;
 134             if( diff == 0 )
 135                 x264_log( h, X264_LOG_ERROR, "diff frame num == 0\n" );
 136             sh->ref_pic_list_order[0][i].idc = ( diff > 0 );
 137             sh->ref_pic_list_order[0][i].arg = abs( diff ) - 1;
 138             pred_frame_num = h->fref0[i]->i_frame_num;
 139         }
 140     }
 141
 142     sh->i_cabac_init_idc = param->i_cabac_init_idc;
 143
 144     sh->i_qp = i_qp;
 145     sh->i_qp_delta = i_qp - pps->i_pic_init_qp;
 146     sh->b_sp_for_swidth = 0;
 147     sh->i_qs_delta = 0;
 148
 149     /* If effective qp <= 15, deblocking would have no effect anyway */
 150     if( param->b_deblocking_filter
 151         && ( h->mb.b_variable_qp
 152         || 15 < i_qp + 2 * X264_MIN(param->i_deblocking_filter_alphac0, param->i_deblocking_filter_beta) ) )
 153     {
 154         sh->i_disable_deblocking_filter_idc = 0;
 155     }
 156     else
 157     {
 158         sh->i_disable_deblocking_filter_idc = 1;
 159     }
 160     sh->i_alpha_c0_offset = param->i_deblocking_filter_alphac0 << 1;
 161     sh->i_beta_offset = param->i_deblocking_filter_beta << 1;
 162 }
 163
 164 static void x264_slice_header_write( bs_t *s, x264_slice_header_t *sh, int i_nal_ref_idc )
 165 {
 166     int i;
 167
 168     if( sh->b_mbaff )
 169     {
 170         assert( sh->i_first_mb % (2*sh->sps->i_mb_width) == 0 );
 171         bs_write_ue( s, sh->i_first_mb >> 1 );
 172     }
 173     else
 174         bs_write_ue( s, sh->i_first_mb );
 175
 176     bs_write_ue( s, sh->i_type + 5 );   /* same type things */
 177     bs_write_ue( s, sh->i_pps_id );
 178     bs_write( s, sh->sps->i_log2_max_frame_num, sh->i_frame_num & ((1<<sh->sps->i_log2_max_frame_num)-1) );
 179
 180     if( !sh->sps->b_frame_mbs_only )
 181     {
 182         bs_write1( s, sh->b_field_pic );
 183         if( sh->b_field_pic )
 184             bs_write1( s, sh->b_bottom_field );
 185     }
 186
 187     if( sh->i_idr_pic_id >= 0 ) /* NAL IDR */
 188     {
 189         bs_write_ue( s, sh->i_idr_pic_id );
 190     }
 191
 192     if( sh->sps->i_poc_type == 0 )
 193     {
 194         bs_write( s, sh->sps->i_log2_max_poc_lsb, sh->i_poc_lsb & ((1<<sh->sps->i_log2_max_poc_lsb)-1) );
 195         if( sh->pps->b_pic_order && !sh->b_field_pic )
 196         {
 197             bs_write_se( s, sh->i_delta_poc_bottom );
 198         }
 199     }
 200     else if( sh->sps->i_poc_type == 1 && !sh->sps->b_delta_pic_order_always_zero )
 201     {
 202         bs_write_se( s, sh->i_delta_poc[0] );
 203         if( sh->pps->b_pic_order && !sh->b_field_pic )
 204         {
 205             bs_write_se( s, sh->i_delta_poc[1] );
 206         }
 207     }
 208
 209     if( sh->pps->b_redundant_pic_cnt )
 210     {
 211         bs_write_ue( s, sh->i_redundant_pic_cnt );
 212     }
 213
 214     if( sh->i_type == SLICE_TYPE_B )
 215     {
 216         bs_write1( s, sh->b_direct_spatial_mv_pred );
 217     }
 218     if( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_SP || sh->i_type == SLICE_TYPE_B )
 219     {
 220         bs_write1( s, sh->b_num_ref_idx_override );
 221         if( sh->b_num_ref_idx_override )
 222         {
 223             bs_write_ue( s, sh->i_num_ref_idx_l0_active - 1 );
 224             if( sh->i_type == SLICE_TYPE_B )
 225             {
 226                 bs_write_ue( s, sh->i_num_ref_idx_l1_active - 1 );
 227             }
 228         }
 229     }
 230
 231     /* ref pic list reordering */
 232     if( sh->i_type != SLICE_TYPE_I )
 233     {
 234         bs_write1( s, sh->b_ref_pic_list_reordering_l0 );
 235         if( sh->b_ref_pic_list_reordering_l0 )
 236         {
 237             for( i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
 238             {
 239                 bs_write_ue( s, sh->ref_pic_list_order[0][i].idc );
 240                 bs_write_ue( s, sh->ref_pic_list_order[0][i].arg );
 241
 242             }
 243             bs_write_ue( s, 3 );
 244         }
 245     }
 246     if( sh->i_type == SLICE_TYPE_B )
 247     {
 248         bs_write1( s, sh->b_ref_pic_list_reordering_l1 );
 249         if( sh->b_ref_pic_list_reordering_l1 )
 250         {
 251             for( i = 0; i < sh->i_num_ref_idx_l1_active; i++ )
 252             {
 253                 bs_write_ue( s, sh->ref_pic_list_order[1][i].idc );
 254                 bs_write_ue( s, sh->ref_pic_list_order[1][i].arg );
 255             }
 256             bs_write_ue( s, 3 );
 257         }
 258     }
 259
 260     if( sh->pps->b_weighted_pred && ( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_SP ) )
 261     {
 262         /* pred_weight_table() */
 263         bs_write_ue( s, sh->weight[0][0].i_denom );
 264         bs_write_ue( s, sh->weight[0][1].i_denom );
 265         for( i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
 266         {
 267             int luma_weight_l0_flag = !!sh->weight[i][0].weightfn;
 268             int chroma_weight_l0_flag = !!sh->weight[i][1].weightfn || !!sh->weight[i][2].weightfn;
 269             bs_write1( s, luma_weight_l0_flag );
 270             if( luma_weight_l0_flag )
 271             {
 272                 bs_write_se( s, sh->weight[i][0].i_scale );
 273                 bs_write_se( s, sh->weight[i][0].i_offset );
 274             }
 275             bs_write1( s, chroma_weight_l0_flag );
 276             if( chroma_weight_l0_flag )
 277             {
 278                 int j;
 279                 for( j = 1; j < 3; j++ )
 280                 {
 281                     bs_write_se( s, sh->weight[i][j].i_scale );
 282                     bs_write_se( s, sh->weight[i][j].i_offset );
 283                 }
 284             }
 285         }
 286     }
 287     else if( sh->pps->b_weighted_bipred == 1 && sh->i_type == SLICE_TYPE_B )
 288     {
 289       /* TODO */
 290     }
 291
 292     if( i_nal_ref_idc != 0 )
 293     {
 294         if( sh->i_idr_pic_id >= 0 )
 295         {
 296             bs_write1( s, 0 );  /* no output of prior pics flag */
 297             bs_write1( s, 0 );  /* long term reference flag */
 298         }
 299         else
 300         {
 301             bs_write1( s, sh->i_mmco_command_count > 0 ); /* adaptive_ref_pic_marking_mode_flag */
 302             if( sh->i_mmco_command_count > 0 )
 303             {
 304                 int i;
 305                 for( i = 0; i < sh->i_mmco_command_count; i++ )
 306                 {
 307                     bs_write_ue( s, 1 ); /* mark short term ref as unused */
 308                     bs_write_ue( s, sh->mmco[i].i_difference_of_pic_nums - 1 );
 309                 }
 310                 bs_write_ue( s, 0 ); /* end command list */
 311             }
 312         }
 313     }
 314
 315     if( sh->pps->b_cabac && sh->i_type != SLICE_TYPE_I )
 316     {
 317         bs_write_ue( s, sh->i_cabac_init_idc );
 318     }
 319     bs_write_se( s, sh->i_qp_delta );      /* slice qp delta */
 320
 321     if( sh->pps->b_deblocking_filter_control )
 322     {
 323         bs_write_ue( s, sh->i_disable_deblocking_filter_idc );
 324         if( sh->i_disable_deblocking_filter_idc != 1 )
 325         {
 326             bs_write_se( s, sh->i_alpha_c0_offset >> 1 );
 327             bs_write_se( s, sh->i_beta_offset >> 1 );
 328         }
 329     }
 330 }
 331
 332 /* If we are within a reasonable distance of the end of the memory allocated for the bitstream, */
 333 /* reallocate, adding an arbitrary amount of space (100 kilobytes). */
 334 static int x264_bitstream_check_buffer( x264_t *h )
 335 {
 336     uint8_t *bs_bak = h->out.p_bitstream;
 337     if( ( h->param.b_cabac && (h->cabac.p_end - h->cabac.p < 2500) )
 338      || ( h->out.bs.p_end - h->out.bs.p < 2500 ) )
 339     {
 340         intptr_t delta;
 341         int i;
 342
 343         h->out.i_bitstream += 100000;
 344         CHECKED_MALLOC( h->out.p_bitstream, h->out.i_bitstream );
 345         h->mc.memcpy_aligned( h->out.p_bitstream, bs_bak, (h->out.i_bitstream - 100000) & ~15 );
 346         delta = h->out.p_bitstream - bs_bak;
 347
 348         h->out.bs.p_start += delta;
 349         h->out.bs.p += delta;
 350         h->out.bs.p_end = h->out.p_bitstream + h->out.i_bitstream;
 351
 352         h->cabac.p_start += delta;
 353         h->cabac.p += delta;
 354         h->cabac.p_end = h->out.p_bitstream + h->out.i_bitstream;
 355
 356         for( i = 0; i <= h->out.i_nal; i++ )
 357             h->out.nal[i].p_payload += delta;
 358         x264_free( bs_bak );
 359     }
 360     return 0;
 361 fail:
 362     x264_free( bs_bak );
 363     return -1;
 364 }
 365
 366 /****************************************************************************
 367  *
 368  ****************************************************************************
 369  ****************************** External API*********************************
 370  ****************************************************************************
 371  *
 372  ****************************************************************************/
 373
 374 static int x264_validate_parameters( x264_t *h )
 375 {
 376 #ifdef HAVE_MMX
 377     if( !(x264_cpu_detect() & X264_CPU_SSE) )
 378     {
 379         x264_log( h, X264_LOG_ERROR, "your cpu does not support SSE1, but x264 was compiled with asm support\n");
 380         x264_log( h, X264_LOG_ERROR, "to run x264, recompile without asm support (configure --disable-asm)\n");
 381         return -1;
 382     }
 383 #endif
 384     if( h->param.i_width <= 0 || h->param.i_height <= 0 )
 385     {
 386         x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
 387                   h->param.i_width, h->param.i_height );
 388         return -1;
 389     }
 390
 391     if( h->param.i_width % 2 || h->param.i_height % 2 )
 392     {
 393         x264_log( h, X264_LOG_ERROR, "width or height not divisible by 2 (%dx%d)\n",
 394                   h->param.i_width, h->param.i_height );
 395         return -1;
 396     }
 397     if( h->param.i_csp != X264_CSP_I420 )
 398     {
 399         x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420 supported)\n" );
 400         return -1;
 401     }
 402
 403     if( h->param.i_threads == X264_THREADS_AUTO )
 404         h->param.i_threads = x264_cpu_num_processors() * 3/2;
 405     h->param.i_threads = x264_clip3( h->param.i_threads, 1, X264_THREAD_MAX );
 406     if( h->param.i_threads > 1 )
 407     {
 408 #ifndef HAVE_PTHREAD
 409         x264_log( h, X264_LOG_WARNING, "not compiled with pthread support!\n");
 410         h->param.i_threads = 1;
 411 #endif
 412     }
 413
 414     if( h->param.b_interlaced )
 415     {
 416         if( h->param.analyse.i_me_method >= X264_ME_ESA )
 417         {
 418             x264_log( h, X264_LOG_WARNING, "interlace + me=esa is not implemented\n" );
 419             h->param.analyse.i_me_method = X264_ME_UMH;
 420         }
 421         if( h->param.analyse.i_direct_mv_pred > X264_DIRECT_PRED_SPATIAL )
 422         {
 423             x264_log( h, X264_LOG_WARNING, "interlace + direct=temporal is not implemented\n" );
 424             h->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
 425         }
 426         if( h->param.analyse.i_weighted_pred > 0 )
 427         {
 428             x264_log( h, X264_LOG_WARNING, "interlace + weightp is not implemented\n" );
 429             h->param.analyse.i_weighted_pred = X264_WEIGHTP_NONE;
 430         }
 431     }
 432
 433     /* Detect default ffmpeg settings and terminate with an error. */
 434     {
 435         int score = 0;
 436         score += h->param.analyse.i_me_range == 0;
 437         score += h->param.rc.i_qp_step == 3;
 438         score += h->param.i_keyint_max == 12;
 439         score += h->param.rc.i_qp_min == 2;
 440         score += h->param.rc.i_qp_max == 31;
 441         score += h->param.rc.f_qcompress == 0.5;
 442         score += fabs(h->param.rc.f_ip_factor - 1.25) < 0.01;
 443         score += fabs(h->param.rc.f_pb_factor - 1.25) < 0.01;
 444         score += h->param.analyse.inter == 0 && h->param.analyse.i_subpel_refine == 8;
 445         if( score >= 5 )
 446         {
 447             x264_log( h, X264_LOG_ERROR, "broken ffmpeg default settings detected\n" );
 448             x264_log( h, X264_LOG_ERROR, "use an encoding preset (vpre)\n" );
 449             return -1;
 450         }
 451     }
 452
 453     if( h->param.rc.i_rc_method < 0 || h->param.rc.i_rc_method > 2 )
 454     {
 455         x264_log( h, X264_LOG_ERROR, "no ratecontrol method specified\n" );
 456         return -1;
 457     }
 458     h->param.rc.f_rf_constant = x264_clip3f( h->param.rc.f_rf_constant, 0, 51 );
 459     h->param.rc.i_qp_constant = x264_clip3( h->param.rc.i_qp_constant, 0, 51 );
 460     if( h->param.rc.i_rc_method == X264_RC_CRF )
 461     {
 462         h->param.rc.i_qp_constant = h->param.rc.f_rf_constant;
 463         h->param.rc.i_bitrate = 0;
 464     }
 465     if( (h->param.rc.i_rc_method == X264_RC_CQP || h->param.rc.i_rc_method == X264_RC_CRF)
 466         && h->param.rc.i_qp_constant == 0 )
 467     {
 468         h->mb.b_lossless = 1;
 469         h->param.i_cqm_preset = X264_CQM_FLAT;
 470         h->param.psz_cqm_file = NULL;
 471         h->param.rc.i_rc_method = X264_RC_CQP;
 472         h->param.rc.f_ip_factor = 1;
 473         h->param.rc.f_pb_factor = 1;
 474         h->param.analyse.b_psnr = 0;
 475         h->param.analyse.b_ssim = 0;
 476         h->param.analyse.i_chroma_qp_offset = 0;
 477         h->param.analyse.i_trellis = 0;
 478         h->param.analyse.b_fast_pskip = 0;
 479         h->param.analyse.i_noise_reduction = 0;
 480         h->param.analyse.f_psy_rd = 0;
 481         h->param.i_bframe = 0;
 482         /* 8x8dct is not useful at all in CAVLC lossless */
 483         if( !h->param.b_cabac )
 484             h->param.analyse.b_transform_8x8 = 0;
 485     }
 486     if( h->param.rc.i_rc_method == X264_RC_CQP )
 487     {
 488         float qp_p = h->param.rc.i_qp_constant;
 489         float qp_i = qp_p - 6*log(h->param.rc.f_ip_factor)/log(2);
 490         float qp_b = qp_p + 6*log(h->param.rc.f_pb_factor)/log(2);
 491         h->param.rc.i_qp_min = x264_clip3( (int)(X264_MIN3( qp_p, qp_i, qp_b )), 0, 51 );
 492         h->param.rc.i_qp_max = x264_clip3( (int)(X264_MAX3( qp_p, qp_i, qp_b ) + .999), 0, 51 );
 493         h->param.rc.i_aq_mode = 0;
 494         h->param.rc.b_mb_tree = 0;
 495     }
 496     h->param.rc.i_qp_max = x264_clip3( h->param.rc.i_qp_max, 0, 51 );
 497     h->param.rc.i_qp_min = x264_clip3( h->param.rc.i_qp_min, 0, h->param.rc.i_qp_max );
 498
 499     int max_slices = (h->param.i_height+((16<<h->param.b_interlaced)-1))/(16<<h->param.b_interlaced);
 500     h->param.i_slice_count = x264_clip3( h->param.i_slice_count, 0, max_slices );
 501     h->param.i_slice_max_size = X264_MAX( h->param.i_slice_max_size, 0 );
 502     h->param.i_slice_max_mbs = X264_MAX( h->param.i_slice_max_mbs, 0 );
 503     if( h->param.b_interlaced && h->param.i_slice_max_size )
 504     {
 505         x264_log( h, X264_LOG_WARNING, "interlaced + slice-max-size is not implemented\n" );
 506         h->param.i_slice_max_size = 0;
 507     }
 508     if( h->param.b_interlaced && h->param.i_slice_max_mbs )
 509     {
 510         x264_log( h, X264_LOG_WARNING, "interlaced + slice-max-mbs is not implemented\n" );
 511         h->param.i_slice_max_mbs = 0;
 512     }
 513     if( h->param.i_slice_max_mbs || h->param.i_slice_max_size )
 514         h->param.i_slice_count = 0;
 515
 516     h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, 16 );
 517     if( h->param.i_keyint_max <= 0 )
 518         h->param.i_keyint_max = 1;
 519     if( h->param.i_scenecut_threshold < 0 )
 520         h->param.i_scenecut_threshold = 0;
 521     h->param.i_keyint_min = x264_clip3( h->param.i_keyint_min, 1, h->param.i_keyint_max/2+1 );
 522     if( !h->param.analyse.i_subpel_refine && h->param.analyse.i_direct_mv_pred > X264_DIRECT_PRED_SPATIAL )
 523     {
 524         x264_log( h, X264_LOG_WARNING, "subme=0 + direct=temporal is not supported\n" );
 525         h->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
 526     }
 527     h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_BFRAME_MAX );
 528     if( h->param.i_keyint_max == 1 )
 529         h->param.i_bframe = 0;
 530     h->param.i_bframe_bias = x264_clip3( h->param.i_bframe_bias, -90, 100 );
 531     if( h->param.i_bframe <= 1 )
 532         h->param.i_bframe_pyramid = X264_B_PYRAMID_NONE;
 533     h->param.i_bframe_pyramid = x264_clip3( h->param.i_bframe_pyramid, X264_B_PYRAMID_NONE, X264_B_PYRAMID_NORMAL );
 534     if( !h->param.i_bframe )
 535     {
 536         h->param.i_bframe_adaptive = X264_B_ADAPT_NONE;
 537         h->param.analyse.i_direct_mv_pred = 0;
 538         h->param.analyse.b_weighted_bipred = 0;
 539     }
 540     h->param.rc.i_lookahead = x264_clip3( h->param.rc.i_lookahead, 0, X264_LOOKAHEAD_MAX );
 541     {
 542         int maxrate = X264_MAX( h->param.rc.i_vbv_max_bitrate, h->param.rc.i_bitrate );
 543         float bufsize = maxrate ? (float)h->param.rc.i_vbv_buffer_size / maxrate : 0;
 544         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;
 545         h->param.rc.i_lookahead = X264_MIN( h->param.rc.i_lookahead, X264_MAX( h->param.i_keyint_max, bufsize*fps ) );
 546     }
 547
 548     h->param.rc.f_qcompress = x264_clip3f( h->param.rc.f_qcompress, 0.0, 1.0 );
 549     if( !h->param.rc.i_lookahead || h->param.i_keyint_max == 1 || h->param.rc.f_qcompress == 1 )
 550         h->param.rc.b_mb_tree = 0;
 551     if( h->param.rc.b_stat_read )
 552         h->param.rc.i_lookahead = 0;
 553 #ifdef HAVE_PTHREAD
 554     if( h->param.i_sync_lookahead )
 555         h->param.i_sync_lookahead = x264_clip3( h->param.i_sync_lookahead, h->param.i_threads + h->param.i_bframe, X264_LOOKAHEAD_MAX );
 556     if( h->param.rc.b_stat_read || h->param.i_threads == 1 )
 557         h->param.i_sync_lookahead = 0;
 558 #else
 559     h->param.i_sync_lookahead = 0;
 560 #endif
 561
 562     h->mb.b_direct_auto_write = h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO
 563                                 && h->param.i_bframe
 564                                 && ( h->param.rc.b_stat_write || !h->param.rc.b_stat_read );
 565
 566     h->param.i_deblocking_filter_alphac0 = x264_clip3( h->param.i_deblocking_filter_alphac0, -6, 6 );
 567     h->param.i_deblocking_filter_beta    = x264_clip3( h->param.i_deblocking_filter_beta, -6, 6 );
 568     h->param.analyse.i_luma_deadzone[0] = x264_clip3( h->param.analyse.i_luma_deadzone[0], 0, 32 );
 569     h->param.analyse.i_luma_deadzone[1] = x264_clip3( h->param.analyse.i_luma_deadzone[1], 0, 32 );
 570
 571     h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, 0, 2 );
 572
 573     if( h->param.i_cqm_preset < X264_CQM_FLAT || h->param.i_cqm_preset > X264_CQM_CUSTOM )
 574         h->param.i_cqm_preset = X264_CQM_FLAT;
 575
 576     if( h->param.analyse.i_me_method < X264_ME_DIA ||
 577         h->param.analyse.i_me_method > X264_ME_TESA )
 578         h->param.analyse.i_me_method = X264_ME_HEX;
 579     if( h->param.analyse.i_me_range < 4 )
 580         h->param.analyse.i_me_range = 4;
 581     if( h->param.analyse.i_me_range > 16 && h->param.analyse.i_me_method <= X264_ME_HEX )
 582         h->param.analyse.i_me_range = 16;
 583     if( h->param.analyse.i_me_method == X264_ME_TESA &&
 584         (h->mb.b_lossless || h->param.analyse.i_subpel_refine <= 1) )
 585         h->param.analyse.i_me_method = X264_ME_ESA;
 586     h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 0, 10 );
 587     h->param.analyse.b_mixed_references = h->param.analyse.b_mixed_references && h->param.i_frame_reference > 1;
 588     h->param.analyse.inter &= X264_ANALYSE_PSUB16x16|X264_ANALYSE_PSUB8x8|X264_ANALYSE_BSUB16x16|
 589                               X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
 590     h->param.analyse.intra &= X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
 591     if( !(h->param.analyse.inter & X264_ANALYSE_PSUB16x16) )
 592         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
 593     if( !h->param.analyse.b_transform_8x8 )
 594     {
 595         h->param.analyse.inter &= ~X264_ANALYSE_I8x8;
 596         h->param.analyse.intra &= ~X264_ANALYSE_I8x8;
 597     }
 598     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
 599     if( !h->param.b_cabac )
 600         h->param.analyse.i_trellis = 0;
 601     h->param.analyse.i_trellis = x264_clip3( h->param.analyse.i_trellis, 0, 2 );
 602     if( !h->param.analyse.b_psy )
 603     {
 604         h->param.analyse.f_psy_rd = 0;
 605         h->param.analyse.f_psy_trellis = 0;
 606     }
 607     if( !h->param.analyse.i_trellis )
 608         h->param.analyse.f_psy_trellis = 0;
 609     h->param.analyse.f_psy_rd = x264_clip3f( h->param.analyse.f_psy_rd, 0, 10 );
 610     h->param.analyse.f_psy_trellis = x264_clip3f( h->param.analyse.f_psy_trellis, 0, 10 );
 611     if( h->param.analyse.i_subpel_refine < 6 )
 612         h->param.analyse.f_psy_rd = 0;
 613     h->mb.i_psy_rd = FIX8( h->param.analyse.f_psy_rd );
 614     /* Psy RDO increases overall quantizers to improve the quality of luma--this indirectly hurts chroma quality */
 615     /* so we lower the chroma QP offset to compensate */
 616     /* This can be triggered repeatedly on multiple calls to parameter_validate, but since encoding
 617      * uses the pps chroma qp offset not the param chroma qp offset, this is not a problem. */
 618     if( h->mb.i_psy_rd )
 619         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_rd < 0.25 ? 1 : 2;
 620     h->mb.i_psy_trellis = FIX8( h->param.analyse.f_psy_trellis / 4 );
 621     /* Psy trellis has a similar effect. */
 622     if( h->mb.i_psy_trellis )
 623         h->param.analyse.i_chroma_qp_offset -= h->param.analyse.f_psy_trellis < 0.25 ? 1 : 2;
 624     else
 625         h->mb.i_psy_trellis = 0;
 626     h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
 627     h->param.rc.i_aq_mode = x264_clip3( h->param.rc.i_aq_mode, 0, 2 );
 628     h->param.rc.f_aq_strength = x264_clip3f( h->param.rc.f_aq_strength, 0, 3 );
 629     if( h->param.rc.f_aq_strength == 0 )
 630         h->param.rc.i_aq_mode = 0;
 631     /* MB-tree requires AQ to be on, even if the strength is zero. */
 632     if( !h->param.rc.i_aq_mode && h->param.rc.b_mb_tree )
 633     {
 634         h->param.rc.i_aq_mode = 1;
 635         h->param.rc.f_aq_strength = 0;
 636     }
 637     if( h->param.rc.b_mb_tree && h->param.i_bframe_pyramid )
 638     {
 639         x264_log( h, X264_LOG_WARNING, "b-pyramid + mb-tree is not supported\n" );
 640         h->param.i_bframe_pyramid = X264_B_PYRAMID_NONE;
 641     }
 642     h->param.analyse.i_noise_reduction = x264_clip3( h->param.analyse.i_noise_reduction, 0, 1<<16 );
 643     if( h->param.analyse.i_subpel_refine == 10 && (h->param.analyse.i_trellis != 2 || !h->param.rc.i_aq_mode) )
 644         h->param.analyse.i_subpel_refine = 9;
 645
 646     {
 647         const x264_level_t *l = x264_levels;
 648         if( h->param.i_level_idc < 0 )
 649         {
 650             int maxrate_bak = h->param.rc.i_vbv_max_bitrate;
 651             if( h->param.rc.i_rc_method == X264_RC_ABR && h->param.rc.i_vbv_buffer_size <= 0 )
 652                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate * 2;
 653             h->sps = h->sps_array;
 654             x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
 655             do h->param.i_level_idc = l->level_idc;
 656                 while( l[1].level_idc && x264_validate_levels( h, 0 ) && l++ );
 657             h->param.rc.i_vbv_max_bitrate = maxrate_bak;
 658         }
 659         else
 660         {
 661             while( l->level_idc && l->level_idc != h->param.i_level_idc )
 662                 l++;
 663             if( l->level_idc == 0 )
 664             {
 665                 x264_log( h, X264_LOG_ERROR, "invalid level_idc: %d\n", h->param.i_level_idc );
 666                 return -1;
 667             }
 668         }
 669         if( h->param.analyse.i_mv_range <= 0 )
 670             h->param.analyse.i_mv_range = l->mv_range >> h->param.b_interlaced;
 671         else
 672             h->param.analyse.i_mv_range = x264_clip3(h->param.analyse.i_mv_range, 32, 512 >> h->param.b_interlaced);
 673     }
 674
 675     h->param.analyse.i_weighted_pred = x264_clip3( h->param.analyse.i_weighted_pred, 0, X264_WEIGHTP_SMART );
 676     if( !h->param.analyse.i_weighted_pred && h->param.rc.b_mb_tree && h->param.analyse.b_psy && !h->param.b_interlaced )
 677         h->param.analyse.i_weighted_pred = X264_WEIGHTP_FAKE;
 678
 679     if( h->param.i_threads > 1 )
 680     {
 681         int r = h->param.analyse.i_mv_range_thread;
 682         int r2;
 683         if( r <= 0 )
 684         {
 685             // half of the available space is reserved and divided evenly among the threads,
 686             // the rest is allocated to whichever thread is far enough ahead to use it.
 687             // reserving more space increases quality for some videos, but costs more time
 688             // in thread synchronization.
 689             int max_range = (h->param.i_height + X264_THREAD_HEIGHT) / h->param.i_threads - X264_THREAD_HEIGHT;
 690             r = max_range / 2;
 691         }
 692         r = X264_MAX( r, h->param.analyse.i_me_range );
 693         r = X264_MIN( r, h->param.analyse.i_mv_range );
 694         // round up to use the whole mb row
 695         r2 = (r & ~15) + ((-X264_THREAD_HEIGHT) & 15);
 696         if( r2 < r )
 697             r2 += 16;
 698         x264_log( h, X264_LOG_DEBUG, "using mv_range_thread = %d\n", r2 );
 699         h->param.analyse.i_mv_range_thread = r2;
 700     }
 701
 702     if( h->param.rc.f_qblur < 0 )
 703         h->param.rc.f_qblur = 0;
 704     if( h->param.rc.f_complexity_blur < 0 )
 705         h->param.rc.f_complexity_blur = 0;
 706
 707     h->param.i_sps_id &= 31;
 708
 709     if( h->param.i_log_level < X264_LOG_INFO )
 710     {
 711         h->param.analyse.b_psnr = 0;
 712         h->param.analyse.b_ssim = 0;
 713     }
 714
 715     /* ensure the booleans are 0 or 1 so they can be used in math */
 716 #define BOOLIFY(x) h->param.x = !!h->param.x
 717     BOOLIFY( b_cabac );
 718     BOOLIFY( b_deblocking_filter );
 719     BOOLIFY( b_interlaced );
 720     BOOLIFY( analyse.b_transform_8x8 );
 721     BOOLIFY( analyse.b_chroma_me );
 722     BOOLIFY( analyse.b_fast_pskip );
 723     BOOLIFY( rc.b_stat_write );
 724     BOOLIFY( rc.b_stat_read );
 725     BOOLIFY( rc.b_mb_tree );
 726 #undef BOOLIFY
 727
 728     return 0;
 729 }
 730
 731 static void mbcmp_init( x264_t *h )
 732 {
 733     int satd = !h->mb.b_lossless && h->param.analyse.i_subpel_refine > 1;
 734     memcpy( h->pixf.mbcmp, satd ? h->pixf.satd : h->pixf.sad_aligned, sizeof(h->pixf.mbcmp) );
 735     memcpy( h->pixf.mbcmp_unaligned, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.mbcmp_unaligned) );
 736     h->pixf.intra_mbcmp_x3_16x16 = satd ? h->pixf.intra_satd_x3_16x16 : h->pixf.intra_sad_x3_16x16;
 737     h->pixf.intra_mbcmp_x3_8x8c = satd ? h->pixf.intra_satd_x3_8x8c : h->pixf.intra_sad_x3_8x8c;
 738     h->pixf.intra_mbcmp_x3_4x4 = satd ? h->pixf.intra_satd_x3_4x4 : h->pixf.intra_sad_x3_4x4;
 739     satd &= h->param.analyse.i_me_method == X264_ME_TESA;
 740     memcpy( h->pixf.fpelcmp, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.fpelcmp) );
 741     memcpy( h->pixf.fpelcmp_x3, satd ? h->pixf.satd_x3 : h->pixf.sad_x3, sizeof(h->pixf.fpelcmp_x3) );
 742     memcpy( h->pixf.fpelcmp_x4, satd ? h->pixf.satd_x4 : h->pixf.sad_x4, sizeof(h->pixf.fpelcmp_x4) );
 743 }
 744
 745 static void x264_set_aspect_ratio( x264_t *h, x264_param_t *param, int initial )
 746 {
 747     /* VUI */
 748     if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
 749     {
 750         int i_w = param->vui.i_sar_width;
 751         int i_h = param->vui.i_sar_height;
 752         int old_w = h->param.vui.i_sar_width;
 753         int old_h = h->param.vui.i_sar_height;
 754
 755         x264_reduce_fraction( &i_w, &i_h );
 756
 757         while( i_w > 65535 || i_h > 65535 )
 758         {
 759             i_w /= 2;
 760             i_h /= 2;
 761         }
 762
 763         x264_reduce_fraction( &i_w, &i_h );
 764
 765         if( i_w != old_w || i_h != old_h || initial )
 766         {
 767             h->param.vui.i_sar_width = 0;
 768             h->param.vui.i_sar_height = 0;
 769             if( i_w == 0 || i_h == 0 )
 770                 x264_log( h, X264_LOG_WARNING, "cannot create valid sample aspect ratio\n" );
 771             else
 772             {
 773                 x264_log( h, initial?X264_LOG_INFO:X264_LOG_DEBUG, "using SAR=%d/%d\n", i_w, i_h );
 774                 h->param.vui.i_sar_width = i_w;
 775                 h->param.vui.i_sar_height = i_h;
 776             }
 777         }
 778     }
 779 }
 780
 781 /****************************************************************************
 782  * x264_encoder_open:
 783  ****************************************************************************/
 784 x264_t *x264_encoder_open( x264_param_t *param )
 785 {
 786     x264_t *h;
 787     char buf[1000], *p;
 788     int i, qp, i_slicetype_length;
 789
 790     CHECKED_MALLOCZERO( h, sizeof(x264_t) );
 791
 792     /* Create a copy of param */
 793     memcpy( &h->param, param, sizeof(x264_param_t) );
 794
 795     if( param->param_free )
 796         param->param_free( param );
 797
 798     if( x264_validate_parameters( h ) < 0 )
 799         goto fail;
 800
 801     if( h->param.psz_cqm_file )
 802         if( x264_cqm_parse_file( h, h->param.psz_cqm_file ) < 0 )
 803             goto fail;
 804
 805     if( h->param.rc.psz_stat_out )
 806         h->param.rc.psz_stat_out = strdup( h->param.rc.psz_stat_out );
 807     if( h->param.rc.psz_stat_in )
 808         h->param.rc.psz_stat_in = strdup( h->param.rc.psz_stat_in );
 809
 810     x264_set_aspect_ratio( h, param, 1 );
 811
 812     x264_reduce_fraction( &h->param.i_fps_num, &h->param.i_fps_den );
 813
 814     /* Init x264_t */
 815     h->i_frame = -1;
 816     h->i_frame_num = 0;
 817     h->i_idr_pic_id = 0;
 818
 819     h->sps = &h->sps_array[0];
 820     x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
 821
 822     h->pps = &h->pps_array[0];
 823     x264_pps_init( h->pps, h->param.i_sps_id, &h->param, h->sps );
 824
 825     x264_validate_levels( h, 1 );
 826
 827     h->chroma_qp_table = i_chroma_qp_table + 12 + h->pps->i_chroma_qp_index_offset;
 828
 829     if( x264_cqm_init( h ) < 0 )
 830         goto fail;
 831
 832     h->mb.i_mb_count = h->sps->i_mb_width * h->sps->i_mb_height;
 833
 834     /* Init frames. */
 835     if( h->param.i_bframe_adaptive == X264_B_ADAPT_TRELLIS )
 836         h->frames.i_delay = X264_MAX(h->param.i_bframe,3)*4;
 837     else
 838         h->frames.i_delay = h->param.i_bframe;
 839     if( h->param.rc.b_mb_tree || h->param.rc.i_vbv_buffer_size )
 840         h->frames.i_delay = X264_MAX( h->frames.i_delay, h->param.rc.i_lookahead );
 841     i_slicetype_length = h->frames.i_delay;
 842     h->frames.i_delay += h->param.i_threads - 1;
 843     h->frames.i_delay = X264_MIN( h->frames.i_delay, X264_LOOKAHEAD_MAX );
 844     h->frames.i_delay += h->param.i_sync_lookahead;
 845
 846     h->frames.i_max_ref0 = h->param.i_frame_reference;
 847     h->frames.i_max_ref1 = h->sps->vui.i_num_reorder_frames;
 848     h->frames.i_max_dpb  = h->sps->vui.i_max_dec_frame_buffering;
 849     h->frames.b_have_lowres = !h->param.rc.b_stat_read
 850         && ( h->param.rc.i_rc_method == X264_RC_ABR
 851           || h->param.rc.i_rc_method == X264_RC_CRF
 852           || h->param.i_bframe_adaptive
 853           || h->param.i_scenecut_threshold
 854           || h->param.rc.b_mb_tree
 855           || h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART );
 856     h->frames.b_have_lowres |= h->param.rc.b_stat_read && h->param.rc.i_vbv_buffer_size > 0;
 857     h->frames.b_have_sub8x8_esa = !!(h->param.analyse.inter & X264_ANALYSE_PSUB8x8);
 858
 859     h->frames.i_last_idr = - h->param.i_keyint_max;
 860     h->frames.i_input    = 0;
 861
 862     CHECKED_MALLOCZERO( h->frames.unused[0], (h->frames.i_delay + 3) * sizeof(x264_frame_t *) );
 863     /* Allocate room for max refs plus a few extra just in case. */
 864     CHECKED_MALLOCZERO( h->frames.unused[1], (h->param.i_threads + 20) * sizeof(x264_frame_t *) );
 865     CHECKED_MALLOCZERO( h->frames.current, (h->param.i_sync_lookahead + h->param.i_bframe
 866                         + h->param.i_threads + 3) * sizeof(x264_frame_t *) );
 867     if( h->param.analyse.i_weighted_pred > 0 )
 868         CHECKED_MALLOCZERO( h->frames.blank_unused, h->param.i_threads * 4 * sizeof(x264_frame_t *) );
 869     h->i_ref0 = 0;
 870     h->i_ref1 = 0;
 871
 872     x264_rdo_init();
 873
 874     /* init CPU functions */
 875     x264_predict_16x16_init( h->param.cpu, h->predict_16x16 );
 876     x264_predict_8x8c_init( h->param.cpu, h->predict_8x8c );
 877     x264_predict_8x8_init( h->param.cpu, h->predict_8x8, &h->predict_8x8_filter );
 878     x264_predict_4x4_init( h->param.cpu, h->predict_4x4 );
 879     if( !h->param.b_cabac )
 880         x264_init_vlc_tables();
 881     x264_pixel_init( h->param.cpu, &h->pixf );
 882     x264_dct_init( h->param.cpu, &h->dctf );
 883     x264_zigzag_init( h->param.cpu, &h->zigzagf, h->param.b_interlaced );
 884     x264_mc_init( h->param.cpu, &h->mc );
 885     x264_quant_init( h, h->param.cpu, &h->quantf );
 886     x264_deblock_init( h->param.cpu, &h->loopf );
 887     x264_dct_init_weights();
 888
 889     mbcmp_init( h );
 890
 891     p = buf + sprintf( buf, "using cpu capabilities:" );
 892     for( i=0; x264_cpu_names[i].flags; i++ )
 893     {
 894         if( !strcmp(x264_cpu_names[i].name, "SSE2")
 895             && param->cpu & (X264_CPU_SSE2_IS_FAST|X264_CPU_SSE2_IS_SLOW) )
 896             continue;
 897         if( !strcmp(x264_cpu_names[i].name, "SSE3")
 898             && (param->cpu & X264_CPU_SSSE3 || !(param->cpu & X264_CPU_CACHELINE_64)) )
 899             continue;
 900         if( !strcmp(x264_cpu_names[i].name, "SSE4.1")
 901             && (param->cpu & X264_CPU_SSE42) )
 902             continue;
 903         if( (param->cpu & x264_cpu_names[i].flags) == x264_cpu_names[i].flags
 904             && (!i || x264_cpu_names[i].flags != x264_cpu_names[i-1].flags) )
 905             p += sprintf( p, " %s", x264_cpu_names[i].name );
 906     }
 907     if( !param->cpu )
 908         p += sprintf( p, " none!" );
 909     x264_log( h, X264_LOG_INFO, "%s\n", buf );
 910
 911     for( qp = h->param.rc.i_qp_min; qp <= h->param.rc.i_qp_max; qp++ )
 912         if( x264_analyse_init_costs( h, qp ) )
 913             goto fail;
 914     if( x264_analyse_init_costs( h, X264_LOOKAHEAD_QP ) )
 915         goto fail;
 916     if( h->cost_mv[1][2013] != 24 )
 917     {
 918         x264_log( h, X264_LOG_ERROR, "MV cost test failed: x264 has been miscompiled!\n" );
 919         goto fail;
 920     }
 921
 922     h->out.i_nal = 0;
 923     h->out.i_bitstream = X264_MAX( 1000000, h->param.i_width * h->param.i_height * 4
 924         * ( h->param.rc.i_rc_method == X264_RC_ABR ? pow( 0.95, h->param.rc.i_qp_min )
 925           : pow( 0.95, h->param.rc.i_qp_constant ) * X264_MAX( 1, h->param.rc.f_ip_factor )));
 926
 927     CHECKED_MALLOC( h->nal_buffer, h->out.i_bitstream * 3/2 + 4 );
 928     h->nal_buffer_size = h->out.i_bitstream * 3/2 + 4;
 929
 930     h->thread[0] = h;
 931     h->i_thread_num = 0;
 932     for( i = 1; i < h->param.i_threads + !!h->param.i_sync_lookahead; i++ )
 933         CHECKED_MALLOC( h->thread[i], sizeof(x264_t) );
 934
 935     for( i = 0; i < h->param.i_threads; i++ )
 936     {
 937         if( i > 0 )
 938             *h->thread[i] = *h;
 939         h->thread[i]->fdec = x264_frame_pop_unused( h, 1 );
 940         if( !h->thread[i]->fdec )
 941             goto fail;
 942         CHECKED_MALLOC( h->thread[i]->out.p_bitstream, h->out.i_bitstream );
 943         /* Start each thread with room for 8 NAL units; it'll realloc later if needed. */
 944         CHECKED_MALLOC( h->thread[i]->out.nal, 8*sizeof(x264_nal_t) );
 945         h->thread[i]->out.i_nals_allocated = 8;
 946         if( x264_macroblock_cache_init( h->thread[i] ) < 0 )
 947             goto fail;
 948     }
 949
 950     if( x264_lookahead_init( h, i_slicetype_length ) )
 951         goto fail;
 952
 953     if( x264_ratecontrol_new( h ) < 0 )
 954         goto fail;
 955
 956     if( h->param.psz_dump_yuv )
 957     {
 958         /* create or truncate the reconstructed video file */
 959         FILE *f = fopen( h->param.psz_dump_yuv, "w" );
 960         if( !f )
 961         {
 962             x264_log( h, X264_LOG_ERROR, "dump_yuv: can't write to %s\n", h->param.psz_dump_yuv );
 963             goto fail;
 964         }
 965         else if( !x264_is_regular_file( f ) )
 966         {
 967             x264_log( h, X264_LOG_ERROR, "dump_yuv: incompatible with non-regular file %s\n", h->param.psz_dump_yuv );
 968             goto fail;
 969         }
 970         fclose( f );
 971     }
 972
 973     x264_log( h, X264_LOG_INFO, "profile %s, level %d.%d\n",
 974         h->sps->i_profile_idc == PROFILE_BASELINE ? "Baseline" :
 975         h->sps->i_profile_idc == PROFILE_MAIN ? "Main" :
 976         h->sps->i_profile_idc == PROFILE_HIGH ? "High" :
 977         "High 4:4:4 Predictive", h->sps->i_level_idc/10, h->sps->i_level_idc%10 );
 978
 979     return h;
 980 fail:
 981     x264_free( h );
 982     return NULL;
 983 }
 984
 985 /****************************************************************************
 986  * x264_encoder_reconfig:
 987  ****************************************************************************/
 988 int x264_encoder_reconfig( x264_t *h, x264_param_t *param )
 989 {
 990     h = h->thread[h->i_thread_phase];
 991     x264_set_aspect_ratio( h, param, 0 );
 992 #define COPY(var) h->param.var = param->var
 993     COPY( i_frame_reference ); // but never uses more refs than initially specified
 994     COPY( i_bframe_bias );
 995     if( h->param.i_scenecut_threshold )
 996         COPY( i_scenecut_threshold ); // can't turn it on or off, only vary the threshold
 997     COPY( b_deblocking_filter );
 998     COPY( i_deblocking_filter_alphac0 );
 999     COPY( i_deblocking_filter_beta );
1000     COPY( analyse.intra );
1001     COPY( analyse.inter );
1002     COPY( analyse.i_direct_mv_pred );
1003     /* Scratch buffer prevents me_range from being increased for esa/tesa */
1004     if( h->param.analyse.i_me_method < X264_ME_ESA || param->analyse.i_me_range < h->param.analyse.i_me_range )
1005         COPY( analyse.i_me_range );
1006     COPY( analyse.i_noise_reduction );
1007     /* We can't switch out of subme=0 during encoding. */
1008     if( h->param.analyse.i_subpel_refine )
1009         COPY( analyse.i_subpel_refine );
1010     COPY( analyse.i_trellis );
1011     COPY( analyse.b_chroma_me );
1012     COPY( analyse.b_dct_decimate );
1013     COPY( analyse.b_fast_pskip );
1014     COPY( analyse.b_mixed_references );
1015     COPY( analyse.f_psy_rd );
1016     COPY( analyse.f_psy_trellis );
1017     // can only twiddle these if they were enabled to begin with:
1018     if( h->param.analyse.i_me_method >= X264_ME_ESA || param->analyse.i_me_method < X264_ME_ESA )
1019         COPY( analyse.i_me_method );
1020     if( h->param.analyse.i_me_method >= X264_ME_ESA && !h->frames.b_have_sub8x8_esa )
1021         h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
1022     if( h->pps->b_transform_8x8_mode )
1023         COPY( analyse.b_transform_8x8 );
1024     if( h->frames.i_max_ref1 > 1 )
1025         COPY( i_bframe_pyramid );
1026     COPY( i_slice_max_size );
1027     COPY( i_slice_max_mbs );
1028     COPY( i_slice_count );
1029 #undef COPY
1030
1031     mbcmp_init( h );
1032
1033     return x264_validate_parameters( h );
1034 }
1035
1036 /* internal usage */
1037 static void x264_nal_start( x264_t *h, int i_type, int i_ref_idc )
1038 {
1039     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1040
1041     nal->i_ref_idc = i_ref_idc;
1042     nal->i_type    = i_type;
1043
1044     nal->i_payload= 0;
1045     nal->p_payload= &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8];
1046 }
1047 static int x264_nal_end( x264_t *h )
1048 {
1049     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
1050     nal->i_payload = &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8] - nal->p_payload;
1051     h->out.i_nal++;
1052
1053     /* if number of allocated nals is not enough, re-allocate a larger one. */
1054     if( h->out.i_nal >= h->out.i_nals_allocated )
1055     {
1056         x264_nal_t *new_out = x264_malloc( sizeof(x264_nal_t) * (h->out.i_nals_allocated*2) );
1057         if( !new_out )
1058             return -1;
1059         memcpy( new_out, h->out.nal, sizeof(x264_nal_t) * (h->out.i_nals_allocated) );
1060         x264_free( h->out.nal );
1061         h->out.nal = new_out;
1062         h->out.i_nals_allocated *= 2;
1063     }
1064     return 0;
1065 }
1066
1067 static int x264_encoder_encapsulate_nals( x264_t *h )
1068 {
1069     int nal_size = 0, i;
1070     for( i = 0; i < h->out.i_nal; i++ )
1071         nal_size += h->out.nal[i].i_payload;
1072
1073     /* Worst-case NAL unit escaping: reallocate the buffer if it's too small. */
1074     if( h->nal_buffer_size < nal_size * 3/2 + h->out.i_nal * 4 )
1075     {
1076         uint8_t *buf = x264_malloc( nal_size * 2 + h->out.i_nal * 4 );
1077         if( !buf )
1078             return -1;
1079         x264_free( h->nal_buffer );
1080         h->nal_buffer = buf;
1081     }
1082
1083     uint8_t *nal_buffer = h->nal_buffer;
1084
1085     for( i = 0; i < h->out.i_nal; i++ )
1086     {
1087         int size = x264_nal_encode( nal_buffer, h->param.b_annexb, &h->out.nal[i] );
1088         h->out.nal[i].i_payload = size;
1089         h->out.nal[i].p_payload = nal_buffer;
1090         nal_buffer += size;
1091     }
1092
1093     return nal_buffer - h->nal_buffer;
1094 }
1095
1096 /****************************************************************************
1097  * x264_encoder_headers:
1098  ****************************************************************************/
1099 int x264_encoder_headers( x264_t *h, x264_nal_t **pp_nal, int *pi_nal )
1100 {
1101     int frame_size = 0;
1102     /* init bitstream context */
1103     h->out.i_nal = 0;
1104     bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
1105
1106     /* Write SEI, SPS and PPS. */
1107     x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
1108     if( x264_sei_version_write( h, &h->out.bs ) )
1109         return -1;
1110     if( x264_nal_end( h ) )
1111         return -1;
1112
1113     /* generate sequence parameters */
1114     x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
1115     x264_sps_write( &h->out.bs, h->sps );
1116     if( x264_nal_end( h ) )
1117         return -1;
1118
1119     /* generate picture parameters */
1120     x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
1121     x264_pps_write( &h->out.bs, h->pps );
1122     if( x264_nal_end( h ) )
1123         return -1;
1124     bs_flush( &h->out.bs );
1125
1126     frame_size = x264_encoder_encapsulate_nals( h );
1127
1128     /* now set output*/
1129     *pi_nal = h->out.i_nal;
1130     *pp_nal = &h->out.nal[0];
1131     h->out.i_nal = 0;
1132
1133     return frame_size;
1134 }
1135
1136 /* Check to see whether we have chosen a reference list ordering different
1137  * from the standard's default. */
1138 static inline void x264_reference_check_reorder( x264_t *h )
1139 {
1140     int i;
1141     for( i = 0; i < h->i_ref0 - 1; i++ )
1142         /* P and B-frames use different default orders. */
1143         if( h->sh.i_type == SLICE_TYPE_P ? h->fref0[i]->i_frame_num < h->fref0[i+1]->i_frame_num
1144                                          : h->fref0[i]->i_poc < h->fref0[i+1]->i_poc )
1145         {
1146             h->b_ref_reorder[0] = 1;
1147             break;
1148         }
1149 }
1150
1151 /* return -1 on failure, else return the index of the new reference frame */
1152 int x264_weighted_reference_duplicate( x264_t *h, int i_ref, const x264_weight_t *w )
1153 {
1154     int i = h->i_ref0;
1155     int j;
1156     x264_frame_t *newframe;
1157     if( i <= 1 ) /* empty list, definitely can't duplicate frame */
1158         return -1;
1159
1160     /* Find a place to insert the duplicate in the reference list. */
1161     for( j = 0; j < i; j++ )
1162         if( h->fref0[i_ref]->i_frame != h->fref0[j]->i_frame )
1163         {
1164             /* found a place, after j, make sure there is not already a duplicate there */
1165             if( j == i-1 || ( h->fref0[j+1] && h->fref0[i_ref]->i_frame != h->fref0[j+1]->i_frame ) )
1166                 break;
1167         }
1168
1169     if( j == i ) /* No room in the reference list for the duplicate. */
1170         return -1;
1171     j++;
1172
1173     newframe = x264_frame_pop_blank_unused( h );
1174
1175     //FIXME: probably don't need to copy everything
1176     *newframe = *h->fref0[i_ref];
1177     newframe->i_reference_count = 1;
1178     newframe->orig = h->fref0[i_ref];
1179     newframe->b_duplicate = 1;
1180     memcpy( h->fenc->weight[j], w, sizeof(h->fenc->weight[i]) );
1181
1182     /* shift the frames to make space for the dupe. */
1183     h->b_ref_reorder[0] = 1;
1184     if( h->i_ref0 < 16 )
1185         ++h->i_ref0;
1186     h->fref0[15] = NULL;
1187     x264_frame_unshift( &h->fref0[j], newframe );
1188
1189     return j;
1190 }
1191
1192 static void x264_weighted_pred_init( x264_t *h )
1193 {
1194     int i_ref;
1195     int i;
1196
1197     /* for now no analysis and set all weights to nothing */
1198     for( i_ref = 0; i_ref < h->i_ref0; i_ref++ )
1199         h->fenc->weighted[i_ref] = h->fref0[i_ref]->filtered[0];
1200
1201     // FIXME: This only supports weighting of one reference frame
1202     // and duplicates of that frame.
1203     h->fenc->i_lines_weighted = 0;
1204
1205     for( i_ref = 0; i_ref < h->i_ref0; i_ref++ )
1206         for( i = 0; i < 3; i++ )
1207             h->sh.weight[i_ref][i].weightfn = NULL;
1208
1209
1210     if( h->sh.i_type != SLICE_TYPE_P || h->param.analyse.i_weighted_pred <= 0 )
1211         return;
1212
1213     int i_padv = PADV << h->param.b_interlaced;
1214     int denom = -1;
1215     int weightluma = 0;
1216     int buffer_next = 0;
1217     int j;
1218     //FIXME: when chroma support is added, move this into loop
1219     h->sh.weight[0][1].weightfn = h->sh.weight[0][2].weightfn = NULL;
1220     h->sh.weight[0][1].i_denom = h->sh.weight[0][2].i_denom = 0;
1221     for( j = 0; j < h->i_ref0; j++ )
1222     {
1223         if( h->fenc->weight[j][0].weightfn )
1224         {
1225             h->sh.weight[j][0] = h->fenc->weight[j][0];
1226             // if weight is useless, don't write it to stream
1227             if( h->sh.weight[j][0].i_scale == 1<<h->sh.weight[j][0].i_denom && h->sh.weight[j][0].i_offset == 0 )
1228                 h->sh.weight[j][0].weightfn = NULL;
1229             else
1230             {
1231                 if( !weightluma )
1232                 {
1233                     weightluma = 1;
1234                     h->sh.weight[0][0].i_denom = denom = h->sh.weight[j][0].i_denom;
1235                 }
1236                 assert( h->sh.weight[j][0].i_denom == denom );
1237                 h->fenc->weighted[j] = h->mb.p_weight_buf[buffer_next++] +
1238                     h->fenc->i_stride[0] * i_padv + PADH;
1239             }
1240         }
1241
1242         //scale full resolution frame
1243         if( h->sh.weight[j][0].weightfn && h->param.i_threads == 1 )
1244         {
1245             uint8_t *src = h->fref0[j]->filtered[0] - h->fref0[j]->i_stride[0]*i_padv - PADH;
1246             uint8_t *dst = h->fenc->weighted[j] - h->fenc->i_stride[0]*i_padv - PADH;
1247             int stride = h->fenc->i_stride[0];
1248             int width = h->fenc->i_width[0] + PADH*2;
1249             int height = h->fenc->i_lines[0] + i_padv*2;
1250             x264_weight_scale_plane( h, dst, stride, src, stride, width, height, &h->sh.weight[j][0] );
1251             h->fenc->i_lines_weighted = height;
1252         }
1253     }
1254     if( !weightluma )
1255         h->sh.weight[0][0].i_denom = 0;
1256 }
1257
1258 static inline void x264_reference_build_list( x264_t *h, int i_poc )
1259 {
1260     int i;
1261     int b_ok;
1262
1263     /* build ref list 0/1 */
1264     h->i_ref0 = 0;
1265     h->i_ref1 = 0;
1266     for( i = 0; h->frames.reference[i]; i++ )
1267     {
1268         if( h->frames.reference[i]->i_poc < i_poc )
1269         {
1270             h->fref0[h->i_ref0++] = h->frames.reference[i];
1271         }
1272         else if( h->frames.reference[i]->i_poc > i_poc )
1273         {
1274             h->fref1[h->i_ref1++] = h->frames.reference[i];
1275         }
1276     }
1277
1278     /* Order ref0 from higher to lower poc */
1279     do
1280     {
1281         b_ok = 1;
1282         for( i = 0; i < h->i_ref0 - 1; i++ )
1283         {
1284             if( h->fref0[i]->i_poc < h->fref0[i+1]->i_poc )
1285             {
1286                 XCHG( x264_frame_t*, h->fref0[i], h->fref0[i+1] );
1287                 b_ok = 0;
1288                 break;
1289             }
1290         }
1291     } while( !b_ok );
1292
1293     if( h->sh.i_mmco_remove_from_end )
1294         for( i = h->i_ref0-1; i >= h->i_ref0 - h->sh.i_mmco_remove_from_end; i-- )
1295         {
1296             int diff = h->i_frame_num - h->fref0[i]->i_frame_num;
1297             h->sh.mmco[h->sh.i_mmco_command_count].i_poc = h->fref0[i]->i_poc;
1298             h->sh.mmco[h->sh.i_mmco_command_count++].i_difference_of_pic_nums = diff;
1299         }
1300
1301     /* Order ref1 from lower to higher poc (bubble sort) for B-frame */
1302     do
1303     {
1304         b_ok = 1;
1305         for( i = 0; i < h->i_ref1 - 1; i++ )
1306         {
1307             if( h->fref1[i]->i_poc > h->fref1[i+1]->i_poc )
1308             {
1309                 XCHG( x264_frame_t*, h->fref1[i], h->fref1[i+1] );
1310                 b_ok = 0;
1311                 break;
1312             }
1313         }
1314     } while( !b_ok );
1315
1316     x264_reference_check_reorder( h );
1317
1318     h->i_ref1 = X264_MIN( h->i_ref1, h->frames.i_max_ref1 );
1319     h->i_ref0 = X264_MIN( h->i_ref0, h->frames.i_max_ref0 );
1320     h->i_ref0 = X264_MIN( h->i_ref0, h->param.i_frame_reference ); // if reconfig() has lowered the limit
1321
1322     /* add duplicates */
1323     if( h->fenc->i_type == X264_TYPE_P )
1324     {
1325         if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
1326         {
1327             x264_weight_t w[3];
1328             w[1].weightfn = w[2].weightfn = NULL;
1329             if( h->param.rc.b_stat_read )
1330                 x264_ratecontrol_set_weights( h, h->fenc );
1331
1332             if( !h->fenc->weight[0][0].weightfn )
1333             {
1334                 h->fenc->weight[0][0].i_denom = 0;
1335                 SET_WEIGHT( w[0], 1, 1, 0, -1 );
1336                 x264_weighted_reference_duplicate( h, 0, w );
1337             }
1338             else
1339             {
1340                 if( h->fenc->weight[0][0].i_scale == 1<<h->fenc->weight[0][0].i_denom )
1341                 {
1342                     SET_WEIGHT( h->fenc->weight[0][0], 1, 1, 0, h->fenc->weight[0][0].i_offset );
1343                 }
1344                 x264_weighted_reference_duplicate( h, 0, weight_none );
1345                 w[0] = h->fenc->weight[0][0];
1346                 w[0].i_offset--;
1347                 h->mc.weight_cache( h, &w[0] );
1348                 x264_weighted_reference_duplicate( h, 0, w );
1349             }
1350         }
1351         else if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_BLIND )
1352         {
1353             //weighted offset=-1
1354             x264_weight_t w[3];
1355             SET_WEIGHT( w[0], 1, 1, 0, -1 );
1356             h->fenc->weight[0][0].i_denom = 0;
1357             w[1].weightfn = w[2].weightfn = NULL;
1358             x264_weighted_reference_duplicate( h, 0, w );
1359         }
1360     }
1361
1362     assert( h->i_ref0 + h->i_ref1 <= 16 );
1363     h->mb.pic.i_fref[0] = h->i_ref0;
1364     h->mb.pic.i_fref[1] = h->i_ref1;
1365 }
1366
1367 static void x264_fdec_filter_row( x264_t *h, int mb_y )
1368 {
1369     /* mb_y is the mb to be encoded next, not the mb to be filtered here */
1370     int b_hpel = h->fdec->b_kept_as_ref;
1371     int b_deblock = !h->sh.i_disable_deblocking_filter_idc;
1372     int b_end = mb_y == h->sps->i_mb_height;
1373     int min_y = mb_y - (1 << h->sh.b_mbaff);
1374     int max_y = b_end ? h->sps->i_mb_height : mb_y;
1375     b_deblock &= b_hpel || h->param.psz_dump_yuv;
1376     if( mb_y & h->sh.b_mbaff )
1377         return;
1378     if( min_y < 0 )
1379         return;
1380
1381     if( !b_end )
1382     {
1383         int i, j;
1384         for( j=0; j<=h->sh.b_mbaff; j++ )
1385             for( i=0; i<3; i++ )
1386             {
1387                 memcpy( h->mb.intra_border_backup[j][i],
1388                         h->fdec->plane[i] + ((mb_y*16 >> !!i) + j - 1 - h->sh.b_mbaff) * h->fdec->i_stride[i],
1389                         h->sps->i_mb_width*16 >> !!i );
1390             }
1391     }
1392
1393     if( b_deblock )
1394     {
1395         int y;
1396         for( y = min_y; y < max_y; y += (1 << h->sh.b_mbaff) )
1397             x264_frame_deblock_row( h, y );
1398     }
1399
1400     if( b_hpel )
1401     {
1402         x264_frame_expand_border( h, h->fdec, min_y, b_end );
1403         if( h->param.analyse.i_subpel_refine )
1404         {
1405             x264_frame_filter( h, h->fdec, min_y, b_end );
1406             x264_frame_expand_border_filtered( h, h->fdec, min_y, b_end );
1407         }
1408     }
1409
1410     if( h->param.i_threads > 1 && h->fdec->b_kept_as_ref )
1411     {
1412         x264_frame_cond_broadcast( h->fdec, mb_y*16 + (b_end ? 10000 : -(X264_THREAD_HEIGHT << h->sh.b_mbaff)) );
1413     }
1414
1415     min_y = X264_MAX( min_y*16-8, 0 );
1416     max_y = b_end ? h->param.i_height : mb_y*16-8;
1417
1418     if( h->param.analyse.b_psnr )
1419     {
1420         int i;
1421         for( i=0; i<3; i++ )
1422             h->stat.frame.i_ssd[i] +=
1423                 x264_pixel_ssd_wxh( &h->pixf,
1424                     h->fdec->plane[i] + (min_y>>!!i) * h->fdec->i_stride[i], h->fdec->i_stride[i],
1425                     h->fenc->plane[i] + (min_y>>!!i) * h->fenc->i_stride[i], h->fenc->i_stride[i],
1426                     h->param.i_width >> !!i, (max_y-min_y) >> !!i );
1427     }
1428
1429     if( h->param.analyse.b_ssim )
1430     {
1431         x264_emms();
1432         /* offset by 2 pixels to avoid alignment of ssim blocks with dct blocks,
1433          * and overlap by 4 */
1434         min_y += min_y == 0 ? 2 : -6;
1435         h->stat.frame.f_ssim +=
1436             x264_pixel_ssim_wxh( &h->pixf,
1437                 h->fdec->plane[0] + 2+min_y*h->fdec->i_stride[0], h->fdec->i_stride[0],
1438                 h->fenc->plane[0] + 2+min_y*h->fenc->i_stride[0], h->fenc->i_stride[0],
1439                 h->param.i_width-2, max_y-min_y, h->scratch_buffer );
1440     }
1441 }
1442
1443 static inline int x264_reference_update( x264_t *h )
1444 {
1445     int i, j;
1446     if( !h->fdec->b_kept_as_ref )
1447     {
1448         if( h->param.i_threads > 1 )
1449         {
1450             x264_frame_push_unused( h, h->fdec );
1451             h->fdec = x264_frame_pop_unused( h, 1 );
1452             if( !h->fdec )
1453                 return -1;
1454         }
1455         return 0;
1456     }
1457
1458     /* apply mmco from previous frame. */
1459     for( i = 0; i < h->sh.i_mmco_command_count; i++ )
1460         for( j = 0; h->frames.reference[j]; j++ )
1461             if( h->frames.reference[j]->i_poc == h->sh.mmco[i].i_poc )
1462                 x264_frame_push_unused( h, x264_frame_shift( &h->frames.reference[j] ) );
1463
1464     /* move frame in the buffer */
1465     x264_frame_push( h->frames.reference, h->fdec );
1466     if( h->frames.reference[h->sps->i_num_ref_frames] )
1467         x264_frame_push_unused( h, x264_frame_shift( h->frames.reference ) );
1468     h->fdec = x264_frame_pop_unused( h, 1 );
1469     if( !h->fdec )
1470         return -1;
1471     return 0;
1472 }
1473
1474 static inline void x264_reference_reset( x264_t *h )
1475 {
1476     while( h->frames.reference[0] )
1477         x264_frame_push_unused( h, x264_frame_pop( h->frames.reference ) );
1478     h->fdec->i_poc =
1479     h->fenc->i_poc = 0;
1480 }
1481
1482 static inline void x264_reference_hierarchy_reset( x264_t *h )
1483 {
1484     int i, ref;
1485     int b_hasdelayframe = 0;
1486     if( !h->param.i_bframe_pyramid )
1487         return;
1488
1489     /* look for delay frames -- chain must only contain frames that are disposable */
1490     for( i = 0; h->frames.current[i] && IS_DISPOSABLE( h->frames.current[i]->i_type ); i++ )
1491         b_hasdelayframe |= h->frames.current[i]->i_dts
1492                         != h->frames.current[i]->i_frame + h->sps->vui.i_num_reorder_frames;
1493
1494     if( h->param.i_bframe_pyramid != X264_B_PYRAMID_STRICT && !b_hasdelayframe )
1495         return;
1496
1497     /* Remove last BREF. There will never be old BREFs in the
1498      * dpb during a BREF decode when pyramid == STRICT */
1499     for( ref = 0; h->frames.reference[ref]; ref++ )
1500     {
1501         if( h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT
1502             && h->frames.reference[ref]->i_type == X264_TYPE_BREF )
1503         {
1504             int diff = h->i_frame_num - h->frames.reference[ref]->i_frame_num;
1505             h->sh.mmco[h->sh.i_mmco_command_count].i_difference_of_pic_nums = diff;
1506             h->sh.mmco[h->sh.i_mmco_command_count++].i_poc = h->frames.reference[ref]->i_poc;
1507             x264_frame_push_unused( h, x264_frame_pop( h->frames.reference ) );
1508             h->b_ref_reorder[0] = 1;
1509             break;
1510         }
1511     }
1512
1513     /* Prepare to room in the dpb for the delayed display time of the later b-frame's */
1514     h->sh.i_mmco_remove_from_end = X264_MAX( ref + 2 - h->frames.i_max_dpb, 0 );
1515 }
1516
1517 static inline void x264_slice_init( x264_t *h, int i_nal_type, int i_global_qp )
1518 {
1519     /* ------------------------ Create slice header  ----------------------- */
1520     if( i_nal_type == NAL_SLICE_IDR )
1521     {
1522         x264_slice_header_init( h, &h->sh, h->sps, h->pps, h->i_idr_pic_id, h->i_frame_num, i_global_qp );
1523
1524         /* increment id */
1525         h->i_idr_pic_id = ( h->i_idr_pic_id + 1 ) % 65536;
1526     }
1527     else
1528     {
1529         x264_slice_header_init( h, &h->sh, h->sps, h->pps, -1, h->i_frame_num, i_global_qp );
1530
1531         /* always set the real higher num of ref frame used */
1532         h->sh.b_num_ref_idx_override = 1;
1533         h->sh.i_num_ref_idx_l0_active = h->i_ref0 <= 0 ? 1 : h->i_ref0;
1534         h->sh.i_num_ref_idx_l1_active = h->i_ref1 <= 0 ? 1 : h->i_ref1;
1535     }
1536
1537     h->fdec->i_frame_num = h->sh.i_frame_num;
1538
1539     if( h->sps->i_poc_type == 0 )
1540     {
1541         h->sh.i_poc_lsb = h->fdec->i_poc & ( (1 << h->sps->i_log2_max_poc_lsb) - 1 );
1542         h->sh.i_delta_poc_bottom = 0;   /* XXX won't work for field */
1543     }
1544     else if( h->sps->i_poc_type == 1 )
1545     {
1546         /* FIXME TODO FIXME */
1547     }
1548     else
1549     {
1550         /* Nothing to do ? */
1551     }
1552
1553     x264_macroblock_slice_init( h );
1554 }
1555
1556 static int x264_slice_write( x264_t *h )
1557 {
1558     int i_skip;
1559     int mb_xy, i_mb_x, i_mb_y;
1560     int i, i_list, i_ref, i_skip_bak = 0; /* Shut up GCC. */
1561     bs_t bs_bak;
1562     x264_cabac_t cabac_bak;
1563     uint8_t cabac_prevbyte_bak = 0; /* Shut up GCC. */
1564     /* Assume no more than 3 bytes of NALU escaping. */
1565     int slice_max_size = h->param.i_slice_max_size > 0 ? (h->param.i_slice_max_size-3-NALU_OVERHEAD)*8 : INT_MAX;
1566     int starting_bits = bs_pos(&h->out.bs);
1567
1568     /* Slice */
1569     x264_nal_start( h, h->i_nal_type, h->i_nal_ref_idc );
1570
1571     /* Slice header */
1572     x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
1573     if( h->param.b_cabac )
1574     {
1575         /* alignment needed */
1576         bs_align_1( &h->out.bs );
1577
1578         /* init cabac */
1579         x264_cabac_context_init( &h->cabac, h->sh.i_type, h->sh.i_qp, h->sh.i_cabac_init_idc );
1580         x264_cabac_encode_init ( &h->cabac, h->out.bs.p, h->out.bs.p_end );
1581     }
1582     h->mb.i_last_qp = h->sh.i_qp;
1583     h->mb.i_last_dqp = 0;
1584
1585     i_mb_y = h->sh.i_first_mb / h->sps->i_mb_width;
1586     i_mb_x = h->sh.i_first_mb % h->sps->i_mb_width;
1587     i_skip = 0;
1588
1589     while( (mb_xy = i_mb_x + i_mb_y * h->sps->i_mb_width) <= h->sh.i_last_mb )
1590     {
1591         int mb_spos = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
1592         if( h->param.i_slice_max_size > 0 )
1593         {
1594             /* We don't need the contexts because flushing the CABAC encoder has no context
1595              * dependency and macroblocks are only re-encoded in the case where a slice is
1596              * ended (and thus the content of all contexts are thrown away). */
1597             if( h->param.b_cabac )
1598             {
1599                 memcpy( &cabac_bak, &h->cabac, offsetof(x264_cabac_t, f8_bits_encoded) );
1600                 /* x264's CABAC writer modifies the previous byte during carry, so it has to be
1601                  * backed up. */
1602                 cabac_prevbyte_bak = h->cabac.p[-1];
1603             }
1604             else
1605             {
1606                 bs_bak = h->out.bs;
1607                 i_skip_bak = i_skip;
1608             }
1609         }
1610
1611         if( i_mb_x == 0 && !h->mb.b_reencode_mb )
1612             x264_fdec_filter_row( h, i_mb_y );
1613
1614         /* load cache */
1615         x264_macroblock_cache_load( h, i_mb_x, i_mb_y );
1616
1617         x264_macroblock_analyse( h );
1618
1619         /* encode this macroblock -> be careful it can change the mb type to P_SKIP if needed */
1620         x264_macroblock_encode( h );
1621
1622         if( x264_bitstream_check_buffer( h ) )
1623             return -1;
1624
1625         if( h->param.b_cabac )
1626         {
1627             if( mb_xy > h->sh.i_first_mb && !(h->sh.b_mbaff && (i_mb_y&1)) )
1628                 x264_cabac_encode_terminal( &h->cabac );
1629
1630             if( IS_SKIP( h->mb.i_type ) )
1631                 x264_cabac_mb_skip( h, 1 );
1632             else
1633             {
1634                 if( h->sh.i_type != SLICE_TYPE_I )
1635                     x264_cabac_mb_skip( h, 0 );
1636                 x264_macroblock_write_cabac( h, &h->cabac );
1637             }
1638         }
1639         else
1640         {
1641             if( IS_SKIP( h->mb.i_type ) )
1642                 i_skip++;
1643             else
1644             {
1645                 if( h->sh.i_type != SLICE_TYPE_I )
1646                 {
1647                     bs_write_ue( &h->out.bs, i_skip );  /* skip run */
1648                     i_skip = 0;
1649                 }
1650                 x264_macroblock_write_cavlc( h, &h->out.bs );
1651             }
1652         }
1653
1654         int total_bits = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);
1655         int mb_size = total_bits - mb_spos;
1656
1657         /* We'll just re-encode this last macroblock if we go over the max slice size. */
1658         if( total_bits - starting_bits > slice_max_size && !h->mb.b_reencode_mb )
1659         {
1660             if( mb_xy != h->sh.i_first_mb )
1661             {
1662                 if( h->param.b_cabac )
1663                 {
1664                     memcpy( &h->cabac, &cabac_bak, offsetof(x264_cabac_t, f8_bits_encoded) );
1665                     h->cabac.p[-1] = cabac_prevbyte_bak;
1666                 }
1667                 else
1668                 {
1669                     h->out.bs = bs_bak;
1670                     i_skip = i_skip_bak;
1671                 }
1672                 h->mb.b_reencode_mb = 1;
1673                 h->sh.i_last_mb = mb_xy-1;
1674                 break;
1675             }
1676             else
1677             {
1678                 h->sh.i_last_mb = mb_xy;
1679                 h->mb.b_reencode_mb = 0;
1680             }
1681         }
1682         else
1683             h->mb.b_reencode_mb = 0;
1684
1685 #if VISUALIZE
1686         if( h->param.b_visualize )
1687             x264_visualize_mb( h );
1688 #endif
1689
1690         /* save cache */
1691         x264_macroblock_cache_save( h );
1692
1693         /* accumulate mb stats */
1694         h->stat.frame.i_mb_count[h->mb.i_type]++;
1695
1696         if( !IS_INTRA(h->mb.i_type) && !IS_SKIP(h->mb.i_type) && !IS_DIRECT(h->mb.i_type) )
1697         {
1698             if( h->mb.i_partition != D_8x8 )
1699                     h->stat.frame.i_mb_partition[h->mb.i_partition] += 4;
1700                 else
1701                     for( i = 0; i < 4; i++ )
1702                         h->stat.frame.i_mb_partition[h->mb.i_sub_partition[i]] ++;
1703             if( h->param.i_frame_reference > 1 )
1704                 for( i_list = 0; i_list <= (h->sh.i_type == SLICE_TYPE_B); i_list++ )
1705                     for( i = 0; i < 4; i++ )
1706                     {
1707                         i_ref = h->mb.cache.ref[i_list][ x264_scan8[4*i] ];
1708                         if( i_ref >= 0 )
1709                             h->stat.frame.i_mb_count_ref[i_list][i_ref] ++;
1710                     }
1711         }
1712
1713         if( h->param.i_log_level >= X264_LOG_INFO )
1714         {
1715             if( h->mb.i_cbp_luma || h->mb.i_cbp_chroma )
1716             {
1717                 int cbpsum = (h->mb.i_cbp_luma&1) + ((h->mb.i_cbp_luma>>1)&1)
1718                            + ((h->mb.i_cbp_luma>>2)&1) + (h->mb.i_cbp_luma>>3);
1719                 int b_intra = IS_INTRA(h->mb.i_type);
1720                 h->stat.frame.i_mb_cbp[!b_intra + 0] += cbpsum;
1721                 h->stat.frame.i_mb_cbp[!b_intra + 2] += h->mb.i_cbp_chroma >= 1;
1722                 h->stat.frame.i_mb_cbp[!b_intra + 4] += h->mb.i_cbp_chroma == 2;
1723             }
1724             if( h->mb.i_cbp_luma && !IS_INTRA(h->mb.i_type) )
1725             {
1726                 h->stat.frame.i_mb_count_8x8dct[0] ++;
1727                 h->stat.frame.i_mb_count_8x8dct[1] += h->mb.b_transform_8x8;
1728             }
1729             if( IS_INTRA(h->mb.i_type) && h->mb.i_type != I_PCM )
1730             {
1731                 if( h->mb.i_type == I_16x16 )
1732                     h->stat.frame.i_mb_pred_mode[0][h->mb.i_intra16x16_pred_mode]++;
1733                 else if( h->mb.i_type == I_8x8 )
1734                     for( i = 0; i < 16; i += 4 )
1735                         h->stat.frame.i_mb_pred_mode[1][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
1736                 else //if( h->mb.i_type == I_4x4 )
1737                     for( i = 0; i < 16; i++ )
1738                         h->stat.frame.i_mb_pred_mode[2][h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]]++;
1739             }
1740         }
1741
1742         x264_ratecontrol_mb( h, mb_size );
1743
1744         if( h->sh.b_mbaff )
1745         {
1746             i_mb_x += i_mb_y & 1;
1747             i_mb_y ^= i_mb_x < h->sps->i_mb_width;
1748         }
1749         else
1750             i_mb_x++;
1751         if( i_mb_x == h->sps->i_mb_width )
1752         {
1753             i_mb_y++;
1754             i_mb_x = 0;
1755         }
1756     }
1757
1758     if( h->param.b_cabac )
1759     {
1760         x264_cabac_encode_flush( h, &h->cabac );
1761         h->out.bs.p = h->cabac.p;
1762     }
1763     else
1764     {
1765         if( i_skip > 0 )
1766             bs_write_ue( &h->out.bs, i_skip );  /* last skip run */
1767         /* rbsp_slice_trailing_bits */
1768         bs_rbsp_trailing( &h->out.bs );
1769         bs_flush( &h->out.bs );
1770     }
1771     if( x264_nal_end( h ) )
1772         return -1;
1773
1774     if( h->sh.i_last_mb == h->mb.i_mb_count-1 )
1775     {
1776         h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
1777                                   + (h->out.i_nal*NALU_OVERHEAD * 8)
1778                                   - h->stat.frame.i_tex_bits
1779                                   - h->stat.frame.i_mv_bits;
1780         x264_fdec_filter_row( h, h->sps->i_mb_height );
1781     }
1782
1783     return 0;
1784 }
1785
1786 static void x264_thread_sync_context( x264_t *dst, x264_t *src )
1787 {
1788     x264_frame_t **f;
1789     if( dst == src )
1790         return;
1791
1792     // reference counting
1793     for( f = src->frames.reference; *f; f++ )
1794         (*f)->i_reference_count++;
1795     for( f = dst->frames.reference; *f; f++ )
1796         x264_frame_push_unused( src, *f );
1797     src->fdec->i_reference_count++;
1798     x264_frame_push_unused( src, dst->fdec );
1799
1800     // copy everything except the per-thread pointers and the constants.
1801     memcpy( &dst->i_frame, &src->i_frame, offsetof(x264_t, mb.type) - offsetof(x264_t, i_frame) );
1802     dst->param = src->param;
1803     dst->stat = src->stat;
1804 }
1805
1806 static void x264_thread_sync_stat( x264_t *dst, x264_t *src )
1807 {
1808     if( dst == src )
1809         return;
1810     memcpy( &dst->stat.i_frame_count, &src->stat.i_frame_count, sizeof(dst->stat) - sizeof(dst->stat.frame) );
1811 }
1812
1813 static void *x264_slices_write( x264_t *h )
1814 {
1815     int i_slice_num = 0;
1816     if( h->param.i_sync_lookahead )
1817         x264_lower_thread_priority( 10 );
1818
1819 #ifdef HAVE_MMX
1820     /* Misalign mask has to be set separately for each thread. */
1821     if( h->param.cpu&X264_CPU_SSE_MISALIGN )
1822         x264_cpu_mask_misalign_sse();
1823 #endif
1824
1825 #if VISUALIZE
1826     if( h->param.b_visualize )
1827         if( x264_visualize_init( h ) )
1828             return (void *)-1;
1829 #endif
1830
1831     /* init stats */
1832     memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
1833     h->mb.b_reencode_mb = 0;
1834     while( h->sh.i_first_mb < h->mb.i_mb_count )
1835     {
1836         h->sh.i_last_mb = h->mb.i_mb_count - 1;
1837         if( h->param.i_slice_max_mbs )
1838             h->sh.i_last_mb = h->sh.i_first_mb + h->param.i_slice_max_mbs - 1;
1839         else if( h->param.i_slice_count )
1840         {
1841             x264_emms();
1842             i_slice_num++;
1843             double height = h->sps->i_mb_height >> h->param.b_interlaced;
1844             int width = h->sps->i_mb_width << h->param.b_interlaced;
1845             h->sh.i_last_mb = (int)(height * i_slice_num / h->param.i_slice_count + 0.5) * width - 1;
1846         }
1847         h->sh.i_last_mb = X264_MIN( h->sh.i_last_mb, h->mb.i_mb_count - 1 );
1848         if( x264_stack_align( x264_slice_write, h ) )
1849             return (void *)-1;
1850         h->sh.i_first_mb = h->sh.i_last_mb + 1;
1851     }
1852
1853 #if VISUALIZE
1854     if( h->param.b_visualize )
1855     {
1856         x264_visualize_show( h );
1857         x264_visualize_close( h );
1858     }
1859 #endif
1860
1861     return (void *)0;
1862 }
1863
1864 /****************************************************************************
1865  * x264_encoder_encode:
1866  *  XXX: i_poc   : is the poc of the current given picture
1867  *       i_frame : is the number of the frame being coded
1868  *  ex:  type frame poc
1869  *       I      0   2*0
1870  *       P      1   2*3
1871  *       B      2   2*1
1872  *       B      3   2*2
1873  *       P      4   2*6
1874  *       B      5   2*4
1875  *       B      6   2*5
1876  ****************************************************************************/
1877 int     x264_encoder_encode( x264_t *h,
1878                              x264_nal_t **pp_nal, int *pi_nal,
1879                              x264_picture_t *pic_in,
1880                              x264_picture_t *pic_out )
1881 {
1882     x264_t *thread_current, *thread_prev, *thread_oldest;
1883     int     i_nal_type;
1884     int     i_nal_ref_idc;
1885
1886     int   i_global_qp;
1887
1888     if( h->param.i_threads > 1)
1889     {
1890         thread_prev    = h->thread[ h->i_thread_phase ];
1891         h->i_thread_phase = (h->i_thread_phase + 1) % h->param.i_threads;
1892         thread_current = h->thread[ h->i_thread_phase ];
1893         thread_oldest  = h->thread[ (h->i_thread_phase + 1) % h->param.i_threads ];
1894         x264_thread_sync_context( thread_current, thread_prev );
1895         x264_thread_sync_ratecontrol( thread_current, thread_prev, thread_oldest );
1896         h = thread_current;
1897 //      fprintf(stderr, "current: %p  prev: %p  oldest: %p \n", thread_current, thread_prev, thread_oldest);
1898     }
1899     else
1900     {
1901         thread_current =
1902         thread_oldest  = h;
1903     }
1904
1905     // ok to call this before encoding any frames, since the initial values of fdec have b_kept_as_ref=0
1906     if( x264_reference_update( h ) )
1907         return -1;
1908     h->fdec->i_lines_completed = -1;
1909
1910     /* no data out */
1911     *pi_nal = 0;
1912     *pp_nal = NULL;
1913
1914     /* ------------------- Setup new frame from picture -------------------- */
1915     if( pic_in != NULL )
1916     {
1917         /* 1: Copy the picture to a frame and move it to a buffer */
1918         x264_frame_t *fenc = x264_frame_pop_unused( h, 0 );
1919         if( !fenc )
1920             return -1;
1921
1922         if( x264_frame_copy_picture( h, fenc, pic_in ) < 0 )
1923             return -1;
1924
1925         if( h->param.i_width != 16 * h->sps->i_mb_width ||
1926             h->param.i_height != 16 * h->sps->i_mb_height )
1927             x264_frame_expand_border_mod16( h, fenc );
1928
1929         fenc->i_frame = h->frames.i_input++;
1930
1931         if( h->frames.b_have_lowres )
1932             x264_frame_init_lowres( h, fenc );
1933
1934         if( h->param.rc.b_mb_tree && h->param.rc.b_stat_read )
1935         {
1936             if( x264_macroblock_tree_read( h, fenc ) )
1937                 return -1;
1938         }
1939         else if( h->param.rc.i_aq_mode )
1940             x264_adaptive_quant_frame( h, fenc );
1941
1942         /* 2: Place the frame into the queue for its slice type decision */
1943         x264_lookahead_put_frame( h, fenc );
1944
1945         if( h->frames.i_input <= h->frames.i_delay + 1 - h->param.i_threads )
1946         {
1947             /* Nothing yet to encode, waiting for filling of buffers */
1948             pic_out->i_type = X264_TYPE_AUTO;
1949             return 0;
1950         }
1951     }
1952     else
1953     {
1954         /* signal kills for lookahead thread */
1955         h->lookahead->b_exit_thread = 1;
1956         x264_pthread_cond_broadcast( &h->lookahead->ifbuf.cv_fill );
1957     }
1958
1959     h->i_frame++;
1960     /* 3: The picture is analyzed in the lookahead */
1961     if( !h->frames.current[0] )
1962         x264_lookahead_get_frames( h );
1963
1964     if( !h->frames.current[0] && x264_lookahead_is_empty( h ) )
1965         return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
1966
1967     /* ------------------- Get frame to be encoded ------------------------- */
1968     /* 4: get picture to encode */
1969     h->fenc = x264_frame_shift( h->frames.current );
1970     if( h->fenc->param )
1971     {
1972         x264_encoder_reconfig( h, h->fenc->param );
1973         if( h->fenc->param->param_free )
1974             h->fenc->param->param_free( h->fenc->param );
1975     }
1976
1977     if( h->fenc->i_type == X264_TYPE_IDR )
1978     {
1979         h->frames.i_last_idr = h->fenc->i_frame;
1980         h->i_frame_num = 0;
1981     }
1982     h->sh.i_mmco_command_count = 0;
1983     h->sh.i_mmco_remove_from_end = 0;
1984     h->b_ref_reorder[0] =
1985     h->b_ref_reorder[1] = 0;
1986
1987     /* ------------------- Setup frame context ----------------------------- */
1988     /* 5: Init data dependent of frame type */
1989     if( h->fenc->i_type == X264_TYPE_IDR )
1990     {
1991         /* reset ref pictures */
1992         i_nal_type    = NAL_SLICE_IDR;
1993         i_nal_ref_idc = NAL_PRIORITY_HIGHEST;
1994         h->sh.i_type = SLICE_TYPE_I;
1995         x264_reference_reset( h );
1996     }
1997     else if( h->fenc->i_type == X264_TYPE_I )
1998     {
1999         i_nal_type    = NAL_SLICE;
2000         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2001         h->sh.i_type = SLICE_TYPE_I;
2002         x264_reference_hierarchy_reset( h );
2003     }
2004     else if( h->fenc->i_type == X264_TYPE_P )
2005     {
2006         i_nal_type    = NAL_SLICE;
2007         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
2008         h->sh.i_type = SLICE_TYPE_P;
2009         x264_reference_hierarchy_reset( h );
2010     }
2011     else if( h->fenc->i_type == X264_TYPE_BREF )
2012     {
2013         i_nal_type    = NAL_SLICE;
2014         i_nal_ref_idc = h->param.i_bframe_pyramid == X264_B_PYRAMID_STRICT ? NAL_PRIORITY_LOW : NAL_PRIORITY_HIGH;
2015         h->sh.i_type = SLICE_TYPE_B;
2016         x264_reference_hierarchy_reset( h );
2017     }
2018     else    /* B frame */
2019     {
2020         i_nal_type    = NAL_SLICE;
2021         i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
2022         h->sh.i_type = SLICE_TYPE_B;
2023     }
2024
2025     h->fdec->i_poc =
2026     h->fenc->i_poc = 2 * (h->fenc->i_frame - h->frames.i_last_idr);
2027     h->fdec->i_type = h->fenc->i_type;
2028     h->fdec->i_frame = h->fenc->i_frame;
2029     h->fenc->b_kept_as_ref =
2030     h->fdec->b_kept_as_ref = i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE && h->param.i_keyint_max > 1;
2031
2032
2033
2034     /* ------------------- Init                ----------------------------- */
2035     /* build ref list 0/1 */
2036     x264_reference_build_list( h, h->fdec->i_poc );
2037
2038     /* ---------------------- Write the bitstream -------------------------- */
2039     /* Init bitstream context */
2040     h->out.i_nal = 0;
2041     bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
2042
2043     if( h->param.b_aud )
2044     {
2045         int pic_type;
2046
2047         if( h->sh.i_type == SLICE_TYPE_I )
2048             pic_type = 0;
2049         else if( h->sh.i_type == SLICE_TYPE_P )
2050             pic_type = 1;
2051         else if( h->sh.i_type == SLICE_TYPE_B )
2052             pic_type = 2;
2053         else
2054             pic_type = 7;
2055
2056         x264_nal_start( h, NAL_AUD, NAL_PRIORITY_DISPOSABLE );
2057         bs_write( &h->out.bs, 3, pic_type );
2058         bs_rbsp_trailing( &h->out.bs );
2059         if( x264_nal_end( h ) )
2060             return -1;
2061     }
2062
2063     h->i_nal_type = i_nal_type;
2064     h->i_nal_ref_idc = i_nal_ref_idc;
2065
2066     int overhead = NALU_OVERHEAD;
2067
2068     /* Write SPS and PPS */
2069     if( i_nal_type == NAL_SLICE_IDR && h->param.b_repeat_headers )
2070     {
2071         if( h->fenc->i_frame == 0 )
2072         {
2073             /* identify ourself */
2074             x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
2075             if( x264_sei_version_write( h, &h->out.bs ) )
2076                 return -1;
2077             if( x264_nal_end( h ) )
2078                 return -1;
2079             overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2080         }
2081
2082         /* generate sequence parameters */
2083         x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
2084         x264_sps_write( &h->out.bs, h->sps );
2085         if( x264_nal_end( h ) )
2086             return -1;
2087         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2088
2089         /* generate picture parameters */
2090         x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
2091         x264_pps_write( &h->out.bs, h->pps );
2092         if( x264_nal_end( h ) )
2093             return -1;
2094         overhead += h->out.nal[h->out.i_nal-1].i_payload + NALU_OVERHEAD;
2095     }
2096
2097     /* Init the rate control */
2098     /* FIXME: Include slice header bit cost. */
2099     x264_ratecontrol_start( h, h->fenc->i_qpplus1, overhead*8 );
2100     i_global_qp = x264_ratecontrol_qp( h );
2101
2102     pic_out->i_qpplus1 =
2103     h->fdec->i_qpplus1 = i_global_qp + 1;
2104
2105     if( h->param.rc.b_stat_read && h->sh.i_type != SLICE_TYPE_I )
2106     {
2107         x264_reference_build_list_optimal( h );
2108         x264_reference_check_reorder( h );
2109     }
2110
2111     if( h->sh.i_type == SLICE_TYPE_B )
2112         x264_macroblock_bipred_init( h );
2113
2114     /*------------------------- Weights -------------------------------------*/
2115     x264_weighted_pred_init( h );
2116
2117     /* ------------------------ Create slice header  ----------------------- */
2118     x264_slice_init( h, i_nal_type, i_global_qp );
2119
2120     if( i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE )
2121         h->i_frame_num++;
2122
2123     /* Write frame */
2124     if( h->param.i_threads > 1 )
2125     {
2126         if( x264_pthread_create( &h->thread_handle, NULL, (void*)x264_slices_write, h ) )
2127             return -1;
2128         h->b_thread_active = 1;
2129     }
2130     else
2131         if( (intptr_t)x264_slices_write( h ) )
2132             return -1;
2133
2134     return x264_encoder_frame_end( thread_oldest, thread_current, pp_nal, pi_nal, pic_out );
2135 }
2136
2137 static int x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
2138                                    x264_nal_t **pp_nal, int *pi_nal,
2139                                    x264_picture_t *pic_out )
2140 {
2141     int i, j, i_list, frame_size;
2142     char psz_message[80];
2143
2144     if( h->b_thread_active )
2145     {
2146         void *ret = NULL;
2147         x264_pthread_join( h->thread_handle, &ret );
2148         if( (intptr_t)ret )
2149             return (intptr_t)ret;
2150         h->b_thread_active = 0;
2151     }
2152     if( !h->out.i_nal )
2153     {
2154         pic_out->i_type = X264_TYPE_AUTO;
2155         return 0;
2156     }
2157
2158     x264_frame_push_unused( thread_current, h->fenc );
2159
2160     /* End bitstream, set output  */
2161     *pi_nal = h->out.i_nal;
2162     *pp_nal = h->out.nal;
2163
2164     frame_size = x264_encoder_encapsulate_nals( h );
2165
2166     h->out.i_nal = 0;
2167
2168     /* Set output picture properties */
2169     if( h->sh.i_type == SLICE_TYPE_I )
2170         pic_out->i_type = h->i_nal_type == NAL_SLICE_IDR ? X264_TYPE_IDR : X264_TYPE_I;
2171     else if( h->sh.i_type == SLICE_TYPE_P )
2172         pic_out->i_type = X264_TYPE_P;
2173     else
2174         pic_out->i_type = X264_TYPE_B;
2175     pic_out->i_pts = h->fenc->i_pts;
2176
2177     pic_out->img.i_plane = h->fdec->i_plane;
2178     for(i = 0; i < 3; i++)
2179     {
2180         pic_out->img.i_stride[i] = h->fdec->i_stride[i];
2181         pic_out->img.plane[i] = h->fdec->plane[i];
2182     }
2183
2184     /* ---------------------- Update encoder state ------------------------- */
2185
2186     /* update rc */
2187     x264_emms();
2188     if( x264_ratecontrol_end( h, frame_size * 8 ) < 0 )
2189         return -1;
2190
2191     x264_noise_reduction_update( thread_current );
2192
2193     /* ---------------------- Compute/Print statistics --------------------- */
2194     x264_thread_sync_stat( h, h->thread[0] );
2195
2196     /* Slice stat */
2197     h->stat.i_frame_count[h->sh.i_type]++;
2198     h->stat.i_frame_size[h->sh.i_type] += frame_size;
2199     h->stat.f_frame_qp[h->sh.i_type] += h->fdec->f_qp_avg_aq;
2200
2201     for( i = 0; i < X264_MBTYPE_MAX; i++ )
2202         h->stat.i_mb_count[h->sh.i_type][i] += h->stat.frame.i_mb_count[i];
2203     for( i = 0; i < X264_PARTTYPE_MAX; i++ )
2204         h->stat.i_mb_partition[h->sh.i_type][i] += h->stat.frame.i_mb_partition[i];
2205     for( i = 0; i < 2; i++ )
2206         h->stat.i_mb_count_8x8dct[i] += h->stat.frame.i_mb_count_8x8dct[i];
2207     for( i = 0; i < 6; i++ )
2208         h->stat.i_mb_cbp[i] += h->stat.frame.i_mb_cbp[i];
2209     for( i = 0; i < 3; i++ )
2210         for( j = 0; j < 13; j++ )
2211             h->stat.i_mb_pred_mode[i][j] += h->stat.frame.i_mb_pred_mode[i][j];
2212     if( h->sh.i_type != SLICE_TYPE_I )
2213         for( i_list = 0; i_list < 2; i_list++ )
2214             for( i = 0; i < 32; i++ )
2215                 h->stat.i_mb_count_ref[h->sh.i_type][i_list][i] += h->stat.frame.i_mb_count_ref[i_list][i];
2216     if( h->sh.i_type == SLICE_TYPE_P )
2217     {
2218         h->stat.i_consecutive_bframes[h->fdec->i_frame - h->fref0[0]->i_frame - 1]++;
2219         if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
2220         {
2221             for( i = 0; i < 3; i++ )
2222                 for( j = 0; j < h->i_ref0; j++ )
2223                     if( h->sh.weight[0][i].i_denom != 0 )
2224                     {
2225                         h->stat.i_wpred[i]++;
2226                         break;
2227                     }
2228         }
2229     }
2230     if( h->sh.i_type == SLICE_TYPE_B )
2231     {
2232         h->stat.i_direct_frames[ h->sh.b_direct_spatial_mv_pred ] ++;
2233         if( h->mb.b_direct_auto_write )
2234         {
2235             //FIXME somewhat arbitrary time constants
2236             if( h->stat.i_direct_score[0] + h->stat.i_direct_score[1] > h->mb.i_mb_count )
2237             {
2238                 for( i = 0; i < 2; i++ )
2239                     h->stat.i_direct_score[i] = h->stat.i_direct_score[i] * 9/10;
2240             }
2241             for( i = 0; i < 2; i++ )
2242                 h->stat.i_direct_score[i] += h->stat.frame.i_direct_score[i];
2243         }
2244     }
2245
2246     psz_message[0] = '\0';
2247     if( h->param.analyse.b_psnr )
2248     {
2249         int64_t ssd[3] = {
2250             h->stat.frame.i_ssd[0],
2251             h->stat.frame.i_ssd[1],
2252             h->stat.frame.i_ssd[2],
2253         };
2254
2255         h->stat.i_ssd_global[h->sh.i_type] += ssd[0] + ssd[1] + ssd[2];
2256         h->stat.f_psnr_average[h->sh.i_type] += x264_psnr( ssd[0] + ssd[1] + ssd[2], 3 * h->param.i_width * h->param.i_height / 2 );
2257         h->stat.f_psnr_mean_y[h->sh.i_type] += x264_psnr( ssd[0], h->param.i_width * h->param.i_height );
2258         h->stat.f_psnr_mean_u[h->sh.i_type] += x264_psnr( ssd[1], h->param.i_width * h->param.i_height / 4 );
2259         h->stat.f_psnr_mean_v[h->sh.i_type] += x264_psnr( ssd[2], h->param.i_width * h->param.i_height / 4 );
2260
2261         snprintf( psz_message, 80, " PSNR Y:%5.2f U:%5.2f V:%5.2f",
2262                   x264_psnr( ssd[0], h->param.i_width * h->param.i_height ),
2263                   x264_psnr( ssd[1], h->param.i_width * h->param.i_height / 4),
2264                   x264_psnr( ssd[2], h->param.i_width * h->param.i_height / 4) );
2265     }
2266
2267     if( h->param.analyse.b_ssim )
2268     {
2269         double ssim_y = h->stat.frame.f_ssim
2270                       / (((h->param.i_width-6)>>2) * ((h->param.i_height-6)>>2));
2271         h->stat.f_ssim_mean_y[h->sh.i_type] += ssim_y;
2272         snprintf( psz_message + strlen(psz_message), 80 - strlen(psz_message),
2273                   " SSIM Y:%.5f", ssim_y );
2274     }
2275     psz_message[79] = '\0';
2276
2277     x264_log( h, X264_LOG_DEBUG,
2278                   "frame=%4d QP=%.2f NAL=%d Slice:%c Poc:%-3d I:%-4d P:%-4d SKIP:%-4d size=%d bytes%s\n",
2279               h->i_frame,
2280               h->fdec->f_qp_avg_aq,
2281               h->i_nal_ref_idc,
2282               h->sh.i_type == SLICE_TYPE_I ? 'I' : (h->sh.i_type == SLICE_TYPE_P ? 'P' : 'B' ),
2283               h->fdec->i_poc,
2284               h->stat.frame.i_mb_count_i,
2285               h->stat.frame.i_mb_count_p,
2286               h->stat.frame.i_mb_count_skip,
2287               frame_size,
2288               psz_message );
2289
2290     // keep stats all in one place
2291     x264_thread_sync_stat( h->thread[0], h );
2292     // for the use of the next frame
2293     x264_thread_sync_stat( thread_current, h );
2294
2295 #ifdef DEBUG_MB_TYPE
2296 {
2297     static const char mb_chars[] = { 'i', 'i', 'I', 'C', 'P', '8', 'S',
2298         'D', '<', 'X', 'B', 'X', '>', 'B', 'B', 'B', 'B', '8', 'S' };
2299     int mb_xy;
2300     for( mb_xy = 0; mb_xy < h->sps->i_mb_width * h->sps->i_mb_height; mb_xy++ )
2301     {
2302         if( h->mb.type[mb_xy] < X264_MBTYPE_MAX && h->mb.type[mb_xy] >= 0 )
2303             fprintf( stderr, "%c ", mb_chars[ h->mb.type[mb_xy] ] );
2304         else
2305             fprintf( stderr, "? " );
2306
2307         if( (mb_xy+1) % h->sps->i_mb_width == 0 )
2308             fprintf( stderr, "\n" );
2309     }
2310 }
2311 #endif
2312
2313     /* Remove duplicates, must be done near the end as breaks h->fref0 array
2314      * by freeing some of its pointers. */
2315      for( i = 0; i < h->i_ref0; i++ )
2316          if( h->fref0[i] && h->fref0[i]->b_duplicate )
2317          {
2318              x264_frame_push_blank_unused( h, h->fref0[i] );
2319              h->fref0[i] = 0;
2320          }
2321
2322     if( h->param.psz_dump_yuv )
2323         x264_frame_dump( h );
2324
2325     return frame_size;
2326 }
2327
2328 static void x264_print_intra( int64_t *i_mb_count, double i_count, int b_print_pcm, char *intra )
2329 {
2330     intra += sprintf( intra, "I16..4%s: %4.1f%% %4.1f%% %4.1f%%",
2331         b_print_pcm ? "..PCM" : "",
2332         i_mb_count[I_16x16]/ i_count,
2333         i_mb_count[I_8x8]  / i_count,
2334         i_mb_count[I_4x4]  / i_count );
2335     if( b_print_pcm )
2336         sprintf( intra, " %4.1f%%", i_mb_count[I_PCM]  / i_count );
2337 }
2338
2339 /****************************************************************************
2340  * x264_encoder_close:
2341  ****************************************************************************/
2342 void    x264_encoder_close  ( x264_t *h )
2343 {
2344     int64_t i_yuv_size = 3 * h->param.i_width * h->param.i_height / 2;
2345     int64_t i_mb_count_size[2][7] = {{0}};
2346     char buf[200];
2347     int i, j, i_list, i_type;
2348     int b_print_pcm = h->stat.i_mb_count[SLICE_TYPE_I][I_PCM]
2349                    || h->stat.i_mb_count[SLICE_TYPE_P][I_PCM]
2350                    || h->stat.i_mb_count[SLICE_TYPE_B][I_PCM];
2351
2352     x264_lookahead_delete( h );
2353
2354     for( i=0; i<h->param.i_threads; i++ )
2355     {
2356         // don't strictly have to wait for the other threads, but it's simpler than canceling them
2357         if( h->thread[i]->b_thread_active )
2358         {
2359             x264_pthread_join( h->thread[i]->thread_handle, NULL );
2360             assert( h->thread[i]->fenc->i_reference_count == 1 );
2361             x264_frame_delete( h->thread[i]->fenc );
2362         }
2363     }
2364
2365     if( h->param.i_threads > 1 )
2366     {
2367         x264_t *thread_prev;
2368
2369         thread_prev = h->thread[h->i_thread_phase];
2370         x264_thread_sync_ratecontrol( h, thread_prev, h );
2371         x264_thread_sync_ratecontrol( thread_prev, thread_prev, h );
2372         h->i_frame = thread_prev->i_frame + 1 - h->param.i_threads;
2373     }
2374     h->i_frame++;
2375
2376     /* Slices used and PSNR */
2377     for( i=0; i<5; i++ )
2378     {
2379         static const int slice_order[] = { SLICE_TYPE_I, SLICE_TYPE_SI, SLICE_TYPE_P, SLICE_TYPE_SP, SLICE_TYPE_B };
2380         static const char *slice_name[] = { "P", "B", "I", "SP", "SI" };
2381         int i_slice = slice_order[i];
2382
2383         if( h->stat.i_frame_count[i_slice] > 0 )
2384         {
2385             const int i_count = h->stat.i_frame_count[i_slice];
2386             if( h->param.analyse.b_psnr )
2387             {
2388                 x264_log( h, X264_LOG_INFO,
2389                           "frame %s:%-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",
2390                           slice_name[i_slice],
2391                           i_count,
2392                           h->stat.f_frame_qp[i_slice] / i_count,
2393                           (double)h->stat.i_frame_size[i_slice] / i_count,
2394                           h->stat.f_psnr_mean_y[i_slice] / i_count, h->stat.f_psnr_mean_u[i_slice] / i_count, h->stat.f_psnr_mean_v[i_slice] / i_count,
2395                           h->stat.f_psnr_average[i_slice] / i_count,
2396                           x264_psnr( h->stat.i_ssd_global[i_slice], i_count * i_yuv_size ) );
2397             }
2398             else
2399             {
2400                 x264_log( h, X264_LOG_INFO,
2401                           "frame %s:%-5d Avg QP:%5.2f  size:%6.0f\n",
2402                           slice_name[i_slice],
2403                           i_count,
2404                           h->stat.f_frame_qp[i_slice] / i_count,
2405                           (double)h->stat.i_frame_size[i_slice] / i_count );
2406             }
2407         }
2408     }
2409     if( h->param.i_bframe && h->stat.i_frame_count[SLICE_TYPE_P] )
2410     {
2411         char *p = buf;
2412         int den = 0;
2413         // weight by number of frames (including the P-frame) that are in a sequence of N B-frames
2414         for( i=0; i<=h->param.i_bframe; i++ )
2415             den += (i+1) * h->stat.i_consecutive_bframes[i];
2416         for( i=0; i<=h->param.i_bframe; i++ )
2417             p += sprintf( p, " %4.1f%%", 100. * (i+1) * h->stat.i_consecutive_bframes[i] / den );
2418         x264_log( h, X264_LOG_INFO, "consecutive B-frames:%s\n", buf );
2419     }
2420
2421     for( i_type = 0; i_type < 2; i_type++ )
2422         for( i = 0; i < X264_PARTTYPE_MAX; i++ )
2423         {
2424             if( i == D_DIRECT_8x8 ) continue; /* direct is counted as its own type */
2425             i_mb_count_size[i_type][x264_mb_partition_pixel_table[i]] += h->stat.i_mb_partition[i_type][i];
2426         }
2427
2428     /* MB types used */
2429     if( h->stat.i_frame_count[SLICE_TYPE_I] > 0 )
2430     {
2431         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_I];
2432         double i_count = h->stat.i_frame_count[SLICE_TYPE_I] * h->mb.i_mb_count / 100.0;
2433         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
2434         x264_log( h, X264_LOG_INFO, "mb I  %s\n", buf );
2435     }
2436     if( h->stat.i_frame_count[SLICE_TYPE_P] > 0 )
2437     {
2438         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_P];
2439         double i_count = h->stat.i_frame_count[SLICE_TYPE_P] * h->mb.i_mb_count / 100.0;
2440         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_P];
2441         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
2442         x264_log( h, X264_LOG_INFO,
2443                   "mb P  %s  P16..4: %4.1f%% %4.1f%% %4.1f%% %4.1f%% %4.1f%%    skip:%4.1f%%\n",
2444                   buf,
2445                   i_mb_size[PIXEL_16x16] / (i_count*4),
2446                   (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
2447                   i_mb_size[PIXEL_8x8] / (i_count*4),
2448                   (i_mb_size[PIXEL_8x4] + i_mb_size[PIXEL_4x8]) / (i_count*4),
2449                   i_mb_size[PIXEL_4x4] / (i_count*4),
2450                   i_mb_count[P_SKIP] / i_count );
2451     }
2452     if( h->stat.i_frame_count[SLICE_TYPE_B] > 0 )
2453     {
2454         int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_B];
2455         double i_count = h->stat.i_frame_count[SLICE_TYPE_B] * h->mb.i_mb_count / 100.0;
2456         double i_mb_list_count;
2457         int64_t *i_mb_size = i_mb_count_size[SLICE_TYPE_B];
2458         int64_t list_count[3] = {0}; /* 0 == L0, 1 == L1, 2 == BI */
2459         x264_print_intra( i_mb_count, i_count, b_print_pcm, buf );
2460         for( i = 0; i < X264_PARTTYPE_MAX; i++ )
2461             for( j = 0; j < 2; j++ )
2462             {
2463                 int l0 = x264_mb_type_list_table[i][0][j];
2464                 int l1 = x264_mb_type_list_table[i][1][j];
2465                 if( l0 || l1 )
2466                     list_count[l1+l0*l1] += h->stat.i_mb_count[SLICE_TYPE_B][i] * 2;
2467             }
2468         list_count[0] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L0_8x8];
2469         list_count[1] += h->stat.i_mb_partition[SLICE_TYPE_B][D_L1_8x8];
2470         list_count[2] += h->stat.i_mb_partition[SLICE_TYPE_B][D_BI_8x8];
2471         i_mb_count[B_DIRECT] += (h->stat.i_mb_partition[SLICE_TYPE_B][D_DIRECT_8x8]+2)/4;
2472         i_mb_list_count = (list_count[0] + list_count[1] + list_count[2]) / 100.0;
2473         x264_log( h, X264_LOG_INFO,
2474                   "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",
2475                   buf,
2476                   i_mb_size[PIXEL_16x16] / (i_count*4),
2477                   (i_mb_size[PIXEL_16x8] + i_mb_size[PIXEL_8x16]) / (i_count*4),
2478                   i_mb_size[PIXEL_8x8] / (i_count*4),
2479                   i_mb_count[B_DIRECT] / i_count,
2480                   i_mb_count[B_SKIP]   / i_count,
2481                   list_count[0] / i_mb_list_count,
2482                   list_count[1] / i_mb_list_count,
2483                   list_count[2] / i_mb_list_count );
2484     }
2485
2486     x264_ratecontrol_summary( h );
2487
2488     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 )
2489     {
2490 #define SUM3(p) (p[SLICE_TYPE_I] + p[SLICE_TYPE_P] + p[SLICE_TYPE_B])
2491 #define SUM3b(p,o) (p[SLICE_TYPE_I][o] + p[SLICE_TYPE_P][o] + p[SLICE_TYPE_B][o])
2492         int64_t i_i8x8 = SUM3b( h->stat.i_mb_count, I_8x8 );
2493         int64_t i_intra = i_i8x8 + SUM3b( h->stat.i_mb_count, I_4x4 )
2494                                  + SUM3b( h->stat.i_mb_count, I_16x16 );
2495         int64_t i_all_intra = i_intra + SUM3b( h->stat.i_mb_count, I_PCM);
2496         const int i_count = h->stat.i_frame_count[SLICE_TYPE_I] +
2497                             h->stat.i_frame_count[SLICE_TYPE_P] +
2498                             h->stat.i_frame_count[SLICE_TYPE_B];
2499         int64_t i_mb_count = i_count * h->mb.i_mb_count;
2500         float fps = (float) h->param.i_fps_num / h->param.i_fps_den;
2501         float f_bitrate = fps * SUM3(h->stat.i_frame_size) / i_count / 125;
2502
2503         if( h->pps->b_transform_8x8_mode )
2504         {
2505             buf[0] = 0;
2506             if( h->stat.i_mb_count_8x8dct[0] )
2507                 sprintf( buf, " inter:%.1f%%", 100. * h->stat.i_mb_count_8x8dct[1] / h->stat.i_mb_count_8x8dct[0] );
2508             x264_log( h, X264_LOG_INFO, "8x8 transform intra:%.1f%%%s\n", 100. * i_i8x8 / i_intra, buf );
2509         }
2510
2511         if( h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO
2512             && h->stat.i_frame_count[SLICE_TYPE_B] )
2513         {
2514             x264_log( h, X264_LOG_INFO, "direct mvs  spatial:%.1f%% temporal:%.1f%%\n",
2515                       h->stat.i_direct_frames[1] * 100. / h->stat.i_frame_count[SLICE_TYPE_B],
2516                       h->stat.i_direct_frames[0] * 100. / h->stat.i_frame_count[SLICE_TYPE_B] );
2517         }
2518
2519         buf[0] = 0;
2520         if( i_mb_count != i_all_intra )
2521             sprintf( buf, " inter: %.1f%% %.1f%% %.1f%%",
2522                      h->stat.i_mb_cbp[1] * 100.0 / ((i_mb_count - i_all_intra)*4),
2523                      h->stat.i_mb_cbp[3] * 100.0 / ((i_mb_count - i_all_intra)  ),
2524                      h->stat.i_mb_cbp[5] * 100.0 / ((i_mb_count - i_all_intra)) );
2525         x264_log( h, X264_LOG_INFO, "coded y,uvDC,uvAC intra: %.1f%% %.1f%% %.1f%%%s\n",
2526                   h->stat.i_mb_cbp[0] * 100.0 / (i_all_intra*4),
2527                   h->stat.i_mb_cbp[2] * 100.0 / (i_all_intra  ),
2528                   h->stat.i_mb_cbp[4] * 100.0 / (i_all_intra  ), buf );
2529
2530         int64_t fixed_pred_modes[3][9] = {{0}};
2531         int64_t sum_pred_modes[3] = {0};
2532         for( i = 0; i <= I_PRED_16x16_DC_128; i++ )
2533         {
2534             fixed_pred_modes[0][x264_mb_pred_mode16x16_fix[i]] += h->stat.i_mb_pred_mode[0][i];
2535             sum_pred_modes[0] += h->stat.i_mb_pred_mode[0][i];
2536         }
2537         if( sum_pred_modes[0] )
2538             x264_log( h, X264_LOG_INFO, "i16 v,h,dc,p: %2.0f%% %2.0f%% %2.0f%% %2.0f%%\n",
2539                       fixed_pred_modes[0][0] * 100.0 / sum_pred_modes[0],
2540                       fixed_pred_modes[0][1] * 100.0 / sum_pred_modes[0],
2541                       fixed_pred_modes[0][2] * 100.0 / sum_pred_modes[0],
2542                       fixed_pred_modes[0][3] * 100.0 / sum_pred_modes[0] );
2543         for( i = 1; i <= 2; i++ )
2544         {
2545             for( j = 0; j <= I_PRED_8x8_DC_128; j++ )
2546             {
2547                 fixed_pred_modes[i][x264_mb_pred_mode4x4_fix(j)] += h->stat.i_mb_pred_mode[i][j];
2548                 sum_pred_modes[i] += h->stat.i_mb_pred_mode[i][j];
2549             }
2550             if( sum_pred_modes[i] )
2551                 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,
2552                           fixed_pred_modes[i][0] * 100.0 / sum_pred_modes[i],
2553                           fixed_pred_modes[i][1] * 100.0 / sum_pred_modes[i],
2554                           fixed_pred_modes[i][2] * 100.0 / sum_pred_modes[i],
2555                           fixed_pred_modes[i][3] * 100.0 / sum_pred_modes[i],
2556                           fixed_pred_modes[i][4] * 100.0 / sum_pred_modes[i],
2557                           fixed_pred_modes[i][5] * 100.0 / sum_pred_modes[i],
2558                           fixed_pred_modes[i][6] * 100.0 / sum_pred_modes[i],
2559                           fixed_pred_modes[i][7] * 100.0 / sum_pred_modes[i],
2560                           fixed_pred_modes[i][8] * 100.0 / sum_pred_modes[i] );
2561         }
2562
2563         if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
2564             x264_log( h, X264_LOG_INFO, "Weighted P-Frames: Y:%.1f%%\n",
2565                       h->stat.i_wpred[0] * 100.0 / h->stat.i_frame_count[SLICE_TYPE_P] );
2566
2567         for( i_list = 0; i_list < 2; i_list++ )
2568         {
2569             int i_slice;
2570             for( i_slice = 0; i_slice < 2; i_slice++ )
2571             {
2572                 char *p = buf;
2573                 int64_t i_den = 0;
2574                 int i_max = 0;
2575                 for( i = 0; i < 32; i++ )
2576                     if( h->stat.i_mb_count_ref[i_slice][i_list][i] )
2577                     {
2578                         i_den += h->stat.i_mb_count_ref[i_slice][i_list][i];
2579                         i_max = i;
2580                     }
2581                 if( i_max == 0 )
2582                     continue;
2583                 for( i = 0; i <= i_max; i++ )
2584                     p += sprintf( p, " %4.1f%%", 100. * h->stat.i_mb_count_ref[i_slice][i_list][i] / i_den );
2585                 x264_log( h, X264_LOG_INFO, "ref %c L%d:%s\n", "PB"[i_slice], i_list, buf );
2586             }
2587         }
2588
2589         if( h->param.analyse.b_ssim )
2590         {
2591             x264_log( h, X264_LOG_INFO,
2592                       "SSIM Mean Y:%.7f\n",
2593                       SUM3( h->stat.f_ssim_mean_y ) / i_count );
2594         }
2595         if( h->param.analyse.b_psnr )
2596         {
2597             x264_log( h, X264_LOG_INFO,
2598                       "PSNR Mean Y:%6.3f U:%6.3f V:%6.3f Avg:%6.3f Global:%6.3f kb/s:%.2f\n",
2599                       SUM3( h->stat.f_psnr_mean_y ) / i_count,
2600                       SUM3( h->stat.f_psnr_mean_u ) / i_count,
2601                       SUM3( h->stat.f_psnr_mean_v ) / i_count,
2602                       SUM3( h->stat.f_psnr_average ) / i_count,
2603                       x264_psnr( SUM3( h->stat.i_ssd_global ), i_count * i_yuv_size ),
2604                       f_bitrate );
2605         }
2606         else
2607             x264_log( h, X264_LOG_INFO, "kb/s:%.2f\n", f_bitrate );
2608     }
2609
2610     /* rc */
2611     x264_ratecontrol_delete( h );
2612
2613     /* param */
2614     if( h->param.rc.psz_stat_out )
2615         free( h->param.rc.psz_stat_out );
2616     if( h->param.rc.psz_stat_in )
2617         free( h->param.rc.psz_stat_in );
2618
2619     x264_cqm_delete( h );
2620     x264_free( h->nal_buffer );
2621     x264_analyse_free_costs( h );
2622
2623     if( h->param.i_threads > 1)
2624         h = h->thread[h->i_thread_phase];
2625
2626     /* frames */
2627     x264_frame_delete_list( h->frames.unused[0] );
2628     x264_frame_delete_list( h->frames.unused[1] );
2629     x264_frame_delete_list( h->frames.current );
2630     x264_frame_delete_list( h->frames.blank_unused );
2631
2632     h = h->thread[0];
2633
2634     for( i = h->param.i_threads - 1; i >= 0; i-- )
2635     {
2636         x264_frame_t **frame;
2637
2638         for( frame = h->thread[i]->frames.reference; *frame; frame++ )
2639         {
2640             assert( (*frame)->i_reference_count > 0 );
2641             (*frame)->i_reference_count--;
2642             if( (*frame)->i_reference_count == 0 )
2643                 x264_frame_delete( *frame );
2644         }
2645         frame = &h->thread[i]->fdec;
2646         assert( (*frame)->i_reference_count > 0 );
2647         (*frame)->i_reference_count--;
2648         if( (*frame)->i_reference_count == 0 )
2649             x264_frame_delete( *frame );
2650
2651         x264_macroblock_cache_end( h->thread[i] );
2652         x264_free( h->thread[i]->out.p_bitstream );
2653         x264_free( h->thread[i]->out.nal);
2654         x264_free( h->thread[i] );
2655     }
2656 }
2657
2658 /****************************************************************************
2659  * x264_encoder_delayed_frames:
2660  ****************************************************************************/
2661 int x264_encoder_delayed_frames( x264_t *h )
2662 {
2663     int delayed_frames = 0;
2664     int i;
2665     for( i=0; i<h->param.i_threads; i++ )
2666         delayed_frames += h->thread[i]->b_thread_active;
2667     h = h->thread[h->i_thread_phase];
2668     for( i=0; h->frames.current[i]; i++ )
2669         delayed_frames++;
2670     x264_pthread_mutex_lock( &h->lookahead->ofbuf.mutex );
2671     x264_pthread_mutex_lock( &h->lookahead->ifbuf.mutex );
2672     x264_pthread_mutex_lock( &h->lookahead->next.mutex );
2673     delayed_frames += h->lookahead->ifbuf.i_size + h->lookahead->next.i_size + h->lookahead->ofbuf.i_size;
2674     x264_pthread_mutex_unlock( &h->lookahead->next.mutex );
2675     x264_pthread_mutex_unlock( &h->lookahead->ifbuf.mutex );
2676     x264_pthread_mutex_unlock( &h->lookahead->ofbuf.mutex );
2677     return delayed_frames;
2678 }