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

   1 /*****************************************************************************
   2  * x264: h264 encoder
   3  *****************************************************************************
   4  * Copyright (C) 2003 Laurent Aimar
   5  * $Id: encoder.c,v 1.1 2004/06/03 19:27:08 fenrir Exp $
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27
  28 #include <math.h>
  29
  30 #include "common/common.h"
  31 #include "common/cpu.h"
  32
  33 #include "set.h"
  34 #include "analyse.h"
  35 #include "ratecontrol.h"
  36 #include "macroblock.h"
  37
  38 //#define DEBUG_MB_TYPE
  39 //#define DEBUG_DUMP_FRAME
  40 //#define DEBUG_BENCHMARK
  41
  42 #ifdef DEBUG_BENCHMARK
  43 static int64_t i_mtime_encode_frame = 0;
  44 static int64_t i_mtime_analyse = 0;
  45 static int64_t i_mtime_encode = 0;
  46 static int64_t i_mtime_write = 0;
  47 static int64_t i_mtime_filter = 0;
  48 #define TIMER_START( d ) \
  49     { \
  50         int64_t d##start = x264_mdate();
  51
  52 #define TIMER_STOP( d ) \
  53         d += x264_mdate() - d##start;\
  54     }
  55 #else
  56 #define TIMER_START( d )
  57 #define TIMER_STOP( d )
  58 #endif
  59
  60
  61 /****************************************************************************
  62  *
  63  ******************************* x264 libs **********************************
  64  *
  65  ****************************************************************************/
  66 static float x264_sqe( uint8_t *pix1, int i_pix_stride, uint8_t *pix2, int i_pix2_stride, int i_width, int i_height )
  67 {
  68     int64_t i_sqe = 0;
  69
  70     int x, y;
  71
  72     for( y = 0; y < i_height; y++ )
  73     {
  74         for( x = 0; x < i_width; x++ )
  75         {
  76             int tmp;
  77
  78             tmp = pix1[y*i_pix_stride+x] - pix2[y*i_pix2_stride+x];
  79
  80             i_sqe += tmp * tmp;
  81         }
  82     }
  83     return i_sqe;
  84 }
  85
  86 static float x264_mse( int64_t i_sqe, int64_t i_size )
  87 {
  88     return (double)i_sqe / ((double)65025.0 * (double)i_size);
  89 }
  90
  91 static float x264_psnr( int64_t i_sqe, int64_t i_size )
  92 {
  93     double f_mse = (double)i_sqe / ((double)65025.0 * (double)i_size);
  94     if( f_mse <= 0.0000000001 ) /* Max 100dB */
  95         return 100;
  96
  97     return (float)(-10.0 * log( f_mse ) / log( 10.0 ));
  98 }
  99
 100 #ifdef DEBUG_DUMP_FRAME
 101 static void x264_frame_dump( x264_t *h, x264_frame_t *fr, char *name )
 102 {
 103     FILE * f = fopen( name, "a" );
 104     int i, y;
 105
 106     fseek( f, 0, SEEK_END );
 107
 108     for( i = 0; i < fr->i_plane; i++ )
 109     {
 110         for( y = 0; y < h->param.i_height / ( i == 0 ? 1 : 2 ); y++ )
 111         {
 112             fwrite( &fr->plane[i][y*fr->i_stride[i]], 1, h->param.i_width / ( i == 0 ? 1 : 2 ), f );
 113         }
 114     }
 115     fclose( f );
 116 }
 117 #endif
 118
 119
 120 /* Fill "default" values */
 121 static void x264_slice_header_init( x264_slice_header_t *sh, x264_param_t *param,
 122                                     x264_sps_t *sps, x264_pps_t *pps,
 123                                     int i_type, int i_idr_pic_id, int i_frame )
 124 {
 125     /* First we fill all field */
 126     sh->sps = sps;
 127     sh->pps = pps;
 128
 129     sh->i_type      = i_type;
 130     sh->i_first_mb  = 0;
 131     sh->i_pps_id    = pps->i_id;
 132
 133     sh->i_frame_num = i_frame;
 134
 135     sh->b_field_pic = 0;    /* Not field support for now */
 136     sh->b_bottom_field = 1; /* not yet used */
 137
 138     sh->i_idr_pic_id = i_idr_pic_id;
 139
 140     /* poc stuff, fixed later */
 141     sh->i_poc_lsb = 0;
 142     sh->i_delta_poc_bottom = 0;
 143     sh->i_delta_poc[0] = 0;
 144     sh->i_delta_poc[1] = 0;
 145
 146     sh->i_redundant_pic_cnt = 0;
 147
 148     sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
 149
 150     sh->b_num_ref_idx_override = 0;
 151     sh->i_num_ref_idx_l0_active = 1;
 152     sh->i_num_ref_idx_l1_active = 1;
 153
 154     sh->i_cabac_init_idc = param->i_cabac_init_idc;
 155
 156     sh->i_qp_delta = 0;
 157     sh->b_sp_for_swidth = 0;
 158     sh->i_qs_delta = 0;
 159
 160     if( param->b_deblocking_filter )
 161     {
 162         sh->i_disable_deblocking_filter_idc = 0;
 163     }
 164     else
 165     {
 166         sh->i_disable_deblocking_filter_idc = 1;
 167     }
 168     sh->i_alpha_c0_offset = param->i_deblocking_filter_alphac0 << 1;
 169     sh->i_beta_offset = param->i_deblocking_filter_beta << 1;
 170 }
 171
 172 static void x264_slice_header_write( bs_t *s, x264_slice_header_t *sh, int i_nal_ref_idc )
 173 {
 174     bs_write_ue( s, sh->i_first_mb );
 175     bs_write_ue( s, sh->i_type + 5 );   /* same type things */
 176     bs_write_ue( s, sh->i_pps_id );
 177     bs_write( s, sh->sps->i_log2_max_frame_num, sh->i_frame_num );
 178
 179     if( sh->i_idr_pic_id >= 0 ) /* NAL IDR */
 180     {
 181         bs_write_ue( s, sh->i_idr_pic_id );
 182     }
 183
 184     if( sh->sps->i_poc_type == 0 )
 185     {
 186         bs_write( s, sh->sps->i_log2_max_poc_lsb, sh->i_poc_lsb );
 187         if( sh->pps->b_pic_order && !sh->b_field_pic )
 188         {
 189             bs_write_se( s, sh->i_delta_poc_bottom );
 190         }
 191     }
 192     else if( sh->sps->i_poc_type == 1 && !sh->sps->b_delta_pic_order_always_zero )
 193     {
 194         bs_write_se( s, sh->i_delta_poc[0] );
 195         if( sh->pps->b_pic_order && !sh->b_field_pic )
 196         {
 197             bs_write_se( s, sh->i_delta_poc[1] );
 198         }
 199     }
 200
 201     if( sh->pps->b_redundant_pic_cnt )
 202     {
 203         bs_write_ue( s, sh->i_redundant_pic_cnt );
 204     }
 205
 206     if( sh->i_type == SLICE_TYPE_B )
 207     {
 208         bs_write1( s, sh->b_direct_spatial_mv_pred );
 209     }
 210     if( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_SP || sh->i_type == SLICE_TYPE_B )
 211     {
 212         bs_write1( s, sh->b_num_ref_idx_override );
 213         if( sh->b_num_ref_idx_override )
 214         {
 215             bs_write_ue( s, sh->i_num_ref_idx_l0_active - 1 );
 216             if( sh->i_type == SLICE_TYPE_B )
 217             {
 218                 bs_write_ue( s, sh->i_num_ref_idx_l1_active - 1 );
 219             }
 220         }
 221     }
 222
 223     /* ref pic list reordering */
 224     if( sh->i_type != SLICE_TYPE_I )
 225     {
 226         int b_ref_pic_list_reordering_l0 = 0;
 227         bs_write1( s, b_ref_pic_list_reordering_l0 );
 228         if( b_ref_pic_list_reordering_l0 )
 229         {
 230             /* FIXME */
 231         }
 232     }
 233     if( sh->i_type == SLICE_TYPE_B )
 234     {
 235         int b_ref_pic_list_reordering_l1 = 0;
 236         bs_write1( s, b_ref_pic_list_reordering_l1 );
 237         if( b_ref_pic_list_reordering_l1 )
 238         {
 239             /* FIXME */
 240         }
 241     }
 242
 243     if( ( sh->pps->b_weighted_pred && ( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_SP ) ) ||
 244         ( sh->pps->b_weighted_bipred == 1 && sh->i_type == SLICE_TYPE_B ) )
 245     {
 246         /* FIXME */
 247     }
 248
 249     if( i_nal_ref_idc != 0 )
 250     {
 251         if( sh->i_idr_pic_id >= 0 )
 252         {
 253             bs_write1( s, 0 );  /* no output of prior pics flag */
 254             bs_write1( s, 0 );  /* long term reference flag */
 255         }
 256         else
 257         {
 258             bs_write1( s, 0 );  /* adaptive_ref_pic_marking_mode_flag */
 259             /* FIXME */
 260         }
 261     }
 262
 263     if( sh->pps->b_cabac && sh->i_type != SLICE_TYPE_I )
 264     {
 265         bs_write_ue( s, sh->i_cabac_init_idc );
 266     }
 267     bs_write_se( s, sh->i_qp_delta );      /* slice qp delta */
 268 #if 0
 269     if( sh->i_type == SLICE_TYPE_SP || sh->i_type == SLICE_TYPE_SI )
 270     {
 271         if( sh->i_type == SLICE_TYPE_SP )
 272         {
 273             bs_write1( s, sh->b_sp_for_swidth );
 274         }
 275         bs_write_se( s, sh->i_qs_delta );
 276     }
 277 #endif
 278
 279     if( sh->pps->b_deblocking_filter_control )
 280     {
 281         bs_write_ue( s, sh->i_disable_deblocking_filter_idc );
 282         if( sh->i_disable_deblocking_filter_idc != 1 )
 283         {
 284             bs_write_se( s, sh->i_alpha_c0_offset >> 1 );
 285             bs_write_se( s, sh->i_beta_offset >> 1 );
 286         }
 287     }
 288 }
 289
 290 /****************************************************************************
 291  *
 292  ****************************************************************************
 293  ****************************** External API*********************************
 294  ****************************************************************************
 295  *
 296  ****************************************************************************/
 297
 298 /****************************************************************************
 299  * x264_encoder_open:
 300  ****************************************************************************/
 301 x264_t *x264_encoder_open   ( x264_param_t *param )
 302 {
 303     x264_t *h = x264_malloc( sizeof( x264_t ) );
 304     int i, i_slice;
 305
 306     /* Create a copy of param */
 307     memcpy( &h->param, param, sizeof( x264_param_t ) );
 308     if( h->param.rc.psz_stat_out )
 309         h->param.rc.psz_stat_out = strdup( h->param.rc.psz_stat_out );
 310     if( h->param.rc.psz_stat_in )
 311         h->param.rc.psz_stat_in = strdup( h->param.rc.psz_stat_in );
 312     if( h->param.rc.psz_rc_eq )
 313         h->param.rc.psz_rc_eq = strdup( h->param.rc.psz_rc_eq );
 314
 315     /* Check parameters validity */
 316     if( param->i_width <= 0  || param->i_height <= 0 )
 317     {
 318         x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
 319                   param->i_width, param->i_height );
 320         free( h );
 321         return NULL;
 322     }
 323
 324     if( param->i_width % 16 != 0 || param->i_height % 16 != 0 )
 325     {
 326         x264_log( h, X264_LOG_ERROR, "width %% 16 != 0 pr height %% 16 != 0 (%dx%d)\n",
 327                  param->i_width, param->i_height );
 328         free( h );
 329         return NULL;
 330     }
 331     if( param->i_csp != X264_CSP_I420 )
 332     {
 333         x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420 supported)\n" );
 334         free( h );
 335         return NULL;
 336     }
 337
 338     /* Fix parameters values */
 339     h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, 15 );
 340     if( h->param.i_keyint_max <= 0 )
 341         h->param.i_keyint_max = 1;
 342     h->param.i_keyint_min = x264_clip3( h->param.i_keyint_min, 1, h->param.i_keyint_max/2+1 );
 343     h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_BFRAME_MAX );
 344
 345     h->param.i_deblocking_filter_alphac0 = x264_clip3( h->param.i_deblocking_filter_alphac0, -6, 6 );
 346     h->param.i_deblocking_filter_beta    = x264_clip3( h->param.i_deblocking_filter_beta, -6, 6 );
 347
 348     h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, -1, 2 );
 349
 350     h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 1, 5 );
 351     if( h->param.analyse.inter & X264_ANALYSE_PSUB8x8 )
 352         h->param.analyse.inter |= X264_ANALYSE_PSUB16x16;
 353
 354     if( h->param.rc.f_qblur < 0 )
 355         h->param.rc.f_qblur = 0;
 356     if( h->param.rc.f_complexity_blur < 0 )
 357         h->param.rc.f_complexity_blur = 0;
 358
 359     /* VUI */
 360     if( h->param.vui.i_sar_width > 0 && h->param.vui.i_sar_height > 0 )
 361     {
 362         int i_w = param->vui.i_sar_width;
 363         int i_h = param->vui.i_sar_height;
 364         int a = i_w, b = i_h;
 365
 366         while( b != 0 )
 367         {
 368             int t = a;
 369
 370             a = b;
 371             b = t % b;
 372         }
 373
 374         i_w /= a;
 375         i_h /= a;
 376         while( i_w > 65535 || i_h > 65535 )
 377         {
 378             i_w /= 2;
 379             i_h /= 2;
 380         }
 381
 382         h->param.vui.i_sar_width = 0;
 383         h->param.vui.i_sar_height = 0;
 384         if( i_w == 0 || i_h == 0 )
 385         {
 386             x264_log( h, X264_LOG_ERROR, "cannot create valid sample aspect ratio\n" );
 387         }
 388         else if( i_w == i_h )
 389         {
 390             x264_log( h, X264_LOG_INFO, "no need for a SAR\n" );
 391         }
 392         else
 393         {
 394             x264_log( h, X264_LOG_INFO, "using SAR=%d/%d\n", i_w, i_h );
 395             h->param.vui.i_sar_width = i_w;
 396             h->param.vui.i_sar_height = i_h;
 397         }
 398     }
 399
 400
 401     /* Init x264_t */
 402     h->out.i_nal = 0;
 403     h->out.i_bitstream = 1000000; /* FIXME estimate max size (idth/height) */
 404     h->out.p_bitstream = x264_malloc( h->out.i_bitstream );
 405
 406     h->i_frame = 0;
 407     h->i_frame_num = 0;
 408     h->i_poc   = 0;
 409     h->i_idr_pic_id = 0;
 410
 411     h->sps = &h->sps_array[0];
 412     x264_sps_init( h->sps, 0, &h->param );
 413
 414     h->pps = &h->pps_array[0];
 415     x264_pps_init( h->pps, 0, &h->param, h->sps);
 416
 417     h->mb.i_mb_count = h->sps->i_mb_width * h->sps->i_mb_height;
 418
 419     /* Init frames. */
 420     for( i = 0; i < X264_BFRAME_MAX + 1; i++ )
 421     {
 422         h->frames.current[i] = NULL;
 423         h->frames.next[i]    = NULL;
 424         h->frames.unused[i]  = NULL;
 425     }
 426     for( i = 0; i < 1 + h->param.i_bframe; i++ )
 427     {
 428         h->frames.unused[i] =  x264_frame_new( h );
 429     }
 430     for( i = 0; i < 2 + h->param.i_frame_reference; i++ )
 431     {
 432         /* 2 = 1 backward ref  + 1 fdec */
 433         h->frames.reference[i] = x264_frame_new( h );
 434     }
 435     h->frames.i_last_idr = - h->param.i_keyint_max;
 436     h->frames.i_input    = 0;
 437
 438     h->i_ref0 = 0;
 439     h->i_ref1 = 0;
 440
 441     h->fdec = h->frames.reference[0];
 442
 443     /* init mb cache */
 444     x264_macroblock_cache_init( h );
 445
 446     /* init cabac adaptive model */
 447     x264_cabac_model_init( &h->cabac );
 448
 449     /* init CPU functions */
 450     x264_predict_16x16_init( h->param.cpu, h->predict_16x16 );
 451     x264_predict_8x8_init( h->param.cpu, h->predict_8x8 );
 452     x264_predict_4x4_init( h->param.cpu, h->predict_4x4 );
 453
 454     x264_pixel_init( h->param.cpu, &h->pixf );
 455     x264_dct_init( h->param.cpu, &h->dctf );
 456     x264_mc_init( h->param.cpu, h->mc );
 457     x264_csp_init( h->param.cpu, h->param.i_csp, &h->csp );
 458
 459     /* rate control */
 460     if( x264_ratecontrol_new( h ) < 0 )
 461         return NULL;
 462
 463     h->i_last_intra_size = 0;
 464     h->i_last_inter_size = 0;
 465
 466     /* stat */
 467     for( i_slice = 0; i_slice < 5; i_slice++ )
 468     {
 469         h->stat.i_slice_count[i_slice] = 0;
 470         h->stat.i_slice_size[i_slice] = 0;
 471         h->stat.i_slice_qp[i_slice] = 0;
 472
 473         h->stat.i_sqe_global[i_slice] = 0;
 474         h->stat.f_psnr_average[i_slice] = 0.0;
 475         h->stat.f_psnr_mean_y[i_slice] = h->stat.f_psnr_mean_u[i_slice] = h->stat.f_psnr_mean_v[i_slice] = 0.0;
 476
 477         for( i = 0; i < 18; i++ )
 478             h->stat.i_mb_count[i_slice][i] = 0;
 479     }
 480
 481     x264_log( h, X264_LOG_INFO, "using cpu capabilities %s%s%s%s%s%s\n",
 482              param->cpu&X264_CPU_MMX ? "MMX " : "",
 483              param->cpu&X264_CPU_MMXEXT ? "MMXEXT " : "",
 484              param->cpu&X264_CPU_SSE ? "SSE " : "",
 485              param->cpu&X264_CPU_SSE2 ? "SSE2 " : "",
 486              param->cpu&X264_CPU_3DNOW ? "3DNow! " : "",
 487              param->cpu&X264_CPU_ALTIVEC ? "Altivec " : "" );
 488
 489     return h;
 490 }
 491
 492 /* internal usage */
 493 static void x264_nal_start( x264_t *h, int i_type, int i_ref_idc )
 494 {
 495     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
 496
 497     nal->i_ref_idc = i_ref_idc;
 498     nal->i_type    = i_type;
 499
 500     bs_align_0( &h->out.bs );   /* not needed */
 501
 502     nal->i_payload= 0;
 503     nal->p_payload= &h->out.p_bitstream[bs_pos( &h->out.bs) / 8];
 504 }
 505 static void x264_nal_end( x264_t *h )
 506 {
 507     x264_nal_t *nal = &h->out.nal[h->out.i_nal];
 508
 509     bs_align_0( &h->out.bs );   /* not needed */
 510
 511     nal->i_payload = &h->out.p_bitstream[bs_pos( &h->out.bs)/8] - nal->p_payload;
 512
 513     h->out.i_nal++;
 514 }
 515
 516 /****************************************************************************
 517  * x264_encoder_headers:
 518  ****************************************************************************/
 519 int x264_encoder_headers( x264_t *h, x264_nal_t **pp_nal, int *pi_nal )
 520 {
 521     /* init bitstream context */
 522     h->out.i_nal = 0;
 523     bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
 524
 525     /* Put SPS and PPS */
 526     if( h->i_frame == 0 )
 527     {
 528         /* generate sequence parameters */
 529         x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
 530         x264_sps_write( &h->out.bs, h->sps );
 531         x264_nal_end( h );
 532
 533         /* generate picture parameters */
 534         x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
 535         x264_pps_write( &h->out.bs, h->pps );
 536         x264_nal_end( h );
 537     }
 538     /* now set output*/
 539     *pi_nal = h->out.i_nal;
 540     *pp_nal = &h->out.nal[0];
 541
 542     return 0;
 543 }
 544
 545
 546 static void x264_frame_put( x264_frame_t *list[X264_BFRAME_MAX], x264_frame_t *frame )
 547 {
 548     int i = 0;
 549
 550     while( list[i] != NULL ) i++;
 551
 552     list[i] = frame;
 553 }
 554
 555 static x264_frame_t *x264_frame_get( x264_frame_t *list[X264_BFRAME_MAX+1] )
 556 {
 557     x264_frame_t *frame = list[0];
 558     int i;
 559
 560     for( i = 0; i < X264_BFRAME_MAX; i++ )
 561     {
 562         list[i] = list[i+1];
 563     }
 564     list[X264_BFRAME_MAX] = NULL;
 565
 566     return frame;
 567 }
 568
 569 /* Sort queued frames into input order */
 570 static void x264_frame_sort( x264_frame_t *list[X264_BFRAME_MAX+1] )
 571 {
 572     int i, b_ok;
 573     do {
 574         b_ok = 1;
 575         for( i = 0; i < X264_BFRAME_MAX && list[i+1]; i++ )
 576         {
 577             if( list[i]->i_frame > list[i+1]->i_frame )
 578             {
 579                 x264_frame_t *tmp = list[i+1];
 580                 list[i+1] = list[i];
 581                 list[i] = tmp;
 582                 b_ok = 0;
 583             }
 584         }
 585     } while( !b_ok );
 586 }
 587
 588 static inline void x264_reference_build_list( x264_t *h, int i_poc )
 589 {
 590     int i;
 591     int b_ok;
 592
 593     /* build ref list 0/1 */
 594     h->i_ref0 = 0;
 595     h->i_ref1 = 0;
 596     for( i = 1; i < h->param.i_frame_reference+2; i++ )
 597     {
 598         if( h->frames.reference[i]->i_poc >= 0 )
 599         {
 600             if( h->frames.reference[i]->i_poc < i_poc )
 601             {
 602                 h->fref0[h->i_ref0++] = h->frames.reference[i];
 603             }
 604             else if( h->frames.reference[i]->i_poc > i_poc )
 605             {
 606                 h->fref1[h->i_ref1++] = h->frames.reference[i];
 607             }
 608         }
 609     }
 610     /* Order ref0 from higher to lower poc */
 611     do
 612     {
 613         b_ok = 1;
 614         for( i = 0; i < h->i_ref0 - 1; i++ )
 615         {
 616             if( h->fref0[i]->i_poc < h->fref0[i+1]->i_poc )
 617             {
 618                 x264_frame_t *tmp = h->fref0[i+1];
 619
 620                 h->fref0[i+1] = h->fref0[i];
 621                 h->fref0[i] = tmp;
 622                 b_ok = 0;
 623                 break;
 624             }
 625         }
 626     } while( !b_ok );
 627     /* Order ref1 from lower to higher poc (bubble sort) for B-frame */
 628     do
 629     {
 630         b_ok = 1;
 631         for( i = 0; i < h->i_ref1 - 1; i++ )
 632         {
 633             if( h->fref1[i]->i_poc > h->fref1[i+1]->i_poc )
 634             {
 635                 x264_frame_t *tmp = h->fref1[i+1];
 636
 637                 h->fref1[i+1] = h->fref1[i];
 638                 h->fref1[i] = tmp;
 639                 b_ok = 0;
 640                 break;
 641             }
 642         }
 643     } while( !b_ok );
 644
 645     if( h->i_ref0 > h->param.i_frame_reference )
 646     {
 647         h->i_ref0 = h->param.i_frame_reference;
 648     }
 649     if( h->i_ref1 > 1 )
 650     {
 651         h->i_ref1 = 1;
 652     }
 653 }
 654
 655 static inline void x264_reference_update( x264_t *h )
 656 {
 657     int i;
 658
 659     /* apply deblocking filter to the current decoded picture */
 660     if( h->param.b_deblocking_filter )
 661     {
 662         TIMER_START( i_mtime_filter );
 663         x264_frame_deblocking_filter( h, h->sh.i_type );
 664         TIMER_STOP( i_mtime_filter );
 665     }
 666     /* expand border */
 667     x264_frame_expand_border( h->fdec );
 668
 669     /* move frame in the buffer */
 670     h->fdec = h->frames.reference[h->param.i_frame_reference+1];
 671     for( i = h->param.i_frame_reference+1; i > 0; i-- )
 672     {
 673         h->frames.reference[i] = h->frames.reference[i-1];
 674     }
 675     h->frames.reference[0] = h->fdec;
 676 }
 677
 678 static inline void x264_reference_reset( x264_t *h )
 679 {
 680     int i;
 681
 682     /* reset ref pictures */
 683     for( i = 1; i < h->param.i_frame_reference+2; i++ )
 684     {
 685         h->frames.reference[i]->i_poc = -1;
 686     }
 687     h->frames.reference[0]->i_poc = 0;
 688 }
 689
 690 static inline void x264_slice_init( x264_t *h, int i_nal_type, int i_slice_type, int i_global_qp )
 691 {
 692     /* ------------------------ Create slice header  ----------------------- */
 693     if( i_nal_type == NAL_SLICE_IDR )
 694     {
 695         x264_slice_header_init( &h->sh, &h->param, h->sps, h->pps, i_slice_type, h->i_idr_pic_id, h->i_frame_num - 1 );
 696
 697         /* increment id */
 698         h->i_idr_pic_id = ( h->i_idr_pic_id + 1 ) % 65536;
 699     }
 700     else
 701     {
 702         x264_slice_header_init( &h->sh, &h->param, h->sps, h->pps, i_slice_type, -1, h->i_frame_num - 1 );
 703
 704         /* always set the real higher num of ref frame used */
 705         h->sh.b_num_ref_idx_override = 1;
 706         h->sh.i_num_ref_idx_l0_active = h->i_ref0 <= 0 ? 1 : h->i_ref0;
 707         h->sh.i_num_ref_idx_l1_active = h->i_ref1 <= 0 ? 1 : h->i_ref1;
 708     }
 709
 710     if( h->sps->i_poc_type == 0 )
 711     {
 712         h->sh.i_poc_lsb = h->fdec->i_poc & ( (1 << h->sps->i_log2_max_poc_lsb) - 1 );
 713         h->sh.i_delta_poc_bottom = 0;   /* XXX won't work for field */
 714     }
 715     else if( h->sps->i_poc_type == 1 )
 716     {
 717         /* FIXME TODO FIXME */
 718     }
 719     else
 720     {
 721         /* Nothing to do ? */
 722     }
 723
 724     /* global qp */
 725     h->sh.i_qp_delta = i_global_qp - h->pps->i_pic_init_qp;
 726
 727     /* get adapative cabac model if needed */
 728     if( h->param.b_cabac )
 729     {
 730         if( h->param.i_cabac_init_idc == -1 )
 731         {
 732             h->sh.i_cabac_init_idc = x264_cabac_model_get( &h->cabac, i_slice_type );
 733         }
 734     }
 735
 736     x264_macroblock_slice_init( h );
 737 }
 738
 739 static inline void x264_slice_write( x264_t *h, int i_nal_type, int i_nal_ref_idc )
 740 {
 741     int i_skip;
 742     int mb_xy;
 743     int i;
 744
 745     /* Init stats */
 746     h->stat.frame.i_hdr_bits  =
 747     h->stat.frame.i_itex_bits =
 748     h->stat.frame.i_ptex_bits =
 749     h->stat.frame.i_misc_bits =
 750     h->stat.frame.i_intra_cost =
 751     h->stat.frame.i_inter_cost = 0;
 752     for( i = 0; i < 18; i++ )
 753         h->stat.frame.i_mb_count[i] = 0;
 754
 755     /* Slice */
 756     x264_nal_start( h, i_nal_type, i_nal_ref_idc );
 757
 758     /* Slice header */
 759     x264_slice_header_write( &h->out.bs, &h->sh, i_nal_ref_idc );
 760     if( h->param.b_cabac )
 761     {
 762         /* alignment needed */
 763         bs_align_1( &h->out.bs );
 764
 765         /* init cabac */
 766         x264_cabac_context_init( &h->cabac, h->sh.i_type, h->sh.pps->i_pic_init_qp + h->sh.i_qp_delta, h->sh.i_cabac_init_idc );
 767         x264_cabac_encode_init ( &h->cabac, &h->out.bs );
 768     }
 769     h->mb.i_last_qp = h->pps->i_pic_init_qp + h->sh.i_qp_delta;
 770     h->mb.i_last_dqp = 0;
 771
 772     for( mb_xy = 0, i_skip = 0; mb_xy < h->sps->i_mb_width * h->sps->i_mb_height; mb_xy++ )
 773     {
 774         const int i_mb_y = mb_xy / h->sps->i_mb_width;
 775         const int i_mb_x = mb_xy % h->sps->i_mb_width;
 776
 777         int mb_spos = bs_pos(&h->out.bs);
 778
 779         /* load cache */
 780         x264_macroblock_cache_load( h, i_mb_x, i_mb_y );
 781
 782         /* analyse parameters
 783          * Slice I: choose I_4x4 or I_16x16 mode
 784          * Slice P: choose between using P mode or intra (4x4 or 16x16)
 785          * */
 786         TIMER_START( i_mtime_analyse );
 787         x264_macroblock_analyse( h );
 788         TIMER_STOP( i_mtime_analyse );
 789
 790         /* encode this macrobock -> be carefull it can change the mb type to P_SKIP if needed */
 791         TIMER_START( i_mtime_encode );
 792         x264_macroblock_encode( h );
 793         TIMER_STOP( i_mtime_encode );
 794
 795         TIMER_START( i_mtime_write );
 796         if( IS_SKIP( h->mb.i_type ) )
 797         {
 798             if( h->param.b_cabac )
 799             {
 800                 if( mb_xy > 0 )
 801                 {
 802                     /* not end_of_slice_flag */
 803                     x264_cabac_encode_terminal( &h->cabac, 0 );
 804                 }
 805
 806                 x264_cabac_mb_skip( h, 1 );
 807             }
 808             else
 809             {
 810                 i_skip++;
 811             }
 812         }
 813         else
 814         {
 815             if( h->param.b_cabac )
 816             {
 817                 if( mb_xy > 0 )
 818                 {
 819                     /* not end_of_slice_flag */
 820                     x264_cabac_encode_terminal( &h->cabac, 0 );
 821                 }
 822                 if( h->sh.i_type != SLICE_TYPE_I )
 823                 {
 824                     x264_cabac_mb_skip( h, 0 );
 825                 }
 826                 x264_macroblock_write_cabac( h, &h->out.bs );
 827             }
 828             else
 829             {
 830                 if( h->sh.i_type != SLICE_TYPE_I )
 831                 {
 832                     bs_write_ue( &h->out.bs, i_skip );  /* skip run */
 833                     i_skip = 0;
 834                 }
 835                 x264_macroblock_write_cavlc( h, &h->out.bs );
 836             }
 837         }
 838         TIMER_STOP( i_mtime_write );
 839
 840         /* save cache */
 841         x264_macroblock_cache_save( h );
 842
 843         h->stat.frame.i_mb_count[h->mb.i_type]++;
 844
 845         x264_ratecontrol_mb(h, bs_pos(&h->out.bs) - mb_spos);
 846     }
 847
 848     if( h->param.b_cabac )
 849     {
 850         /* end of slice */
 851         x264_cabac_encode_terminal( &h->cabac, 1 );
 852     }
 853     else if( i_skip > 0 )
 854     {
 855         bs_write_ue( &h->out.bs, i_skip );  /* last skip run */
 856     }
 857
 858     if( h->param.b_cabac )
 859     {
 860         int i_cabac_word;
 861         x264_cabac_encode_flush( &h->cabac );
 862         /* TODO cabac stuffing things (p209) */
 863         i_cabac_word = (((3 * h->cabac.i_sym_cnt - 3 * 96 * h->sps->i_mb_width * h->sps->i_mb_height)/32) - bs_pos( &h->out.bs)/8)/3;
 864
 865         while( i_cabac_word > 0 )
 866         {
 867             bs_write( &h->out.bs, 16, 0x0000 );
 868             i_cabac_word--;
 869         }
 870     }
 871     else
 872     {
 873         /* rbsp_slice_trailing_bits */
 874         bs_rbsp_trailing( &h->out.bs );
 875     }
 876
 877     x264_nal_end( h );
 878
 879     /* Compute misc bits */
 880     h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
 881                               - h->stat.frame.i_itex_bits
 882                               - h->stat.frame.i_ptex_bits
 883                               - h->stat.frame.i_hdr_bits;
 884 }
 885
 886 /****************************************************************************
 887  * x264_encoder_encode:
 888  *  XXX: i_poc   : is the poc of the current given picture
 889  *       i_frame : is the number of the frame being coded
 890  *  ex:  type frame poc
 891  *       I      0   2*0
 892  *       P      1   2*3
 893  *       B      2   2*1
 894  *       B      3   2*2
 895  *       P      4   2*6
 896  *       B      5   2*4
 897  *       B      6   2*5
 898  ****************************************************************************/
 899 int     x264_encoder_encode( x264_t *h,
 900                              x264_nal_t **pp_nal, int *pi_nal,
 901                              x264_picture_t *pic )
 902 {
 903     x264_frame_t   *frame_psnr = h->fdec; /* just to keep the current decoded frame for psnr calculation */
 904     int     i_nal_type;
 905     int     i_nal_ref_idc;
 906     int     i_slice_type;
 907
 908     int i;
 909
 910     int   i_global_qp;
 911
 912     char psz_message[80];
 913
 914     /* no data out */
 915     *pi_nal = 0;
 916     *pp_nal = NULL;
 917
 918
 919     /* ------------------- Setup new frame from picture -------------------- */
 920     TIMER_START( i_mtime_encode_frame );
 921     if( pic != NULL )
 922     {
 923         /* 1: Copy the picture to a frame and move it to a buffer */
 924         x264_frame_t *fenc = x264_frame_get( h->frames.unused );
 925
 926         x264_frame_copy_picture( h, fenc, pic );
 927
 928         fenc->i_frame = h->frames.i_input++;
 929
 930         x264_frame_put( h->frames.next, fenc );
 931
 932         if( h->frames.i_input <= h->param.i_bframe )
 933         {
 934             /* Nothing yet to encode */
 935             /* waiting for filling bframe buffer */
 936             pic->i_type = X264_TYPE_AUTO;
 937             return 0;
 938         }
 939     }
 940
 941     if( h->frames.current[0] == NULL )
 942     {
 943         /* 2: Select frame types */
 944         x264_frame_t *frm;
 945         int bframes;
 946
 947         if( h->frames.next[0] == NULL )
 948             return 0;
 949
 950         if( h->param.rc.b_stat_read )
 951         {
 952             /* Use the frame types from the first pass */
 953             for( i = 0; h->frames.next[i] != NULL; i++ )
 954                 h->frames.next[i]->i_type =
 955                     x264_ratecontrol_slice_type( h, h->frames.next[i]->i_frame );
 956         }
 957
 958         for( bframes = 0;; bframes++ )
 959         {
 960             frm = h->frames.next[bframes];
 961
 962             /* Limit GOP size */
 963             if( frm->i_frame - h->frames.i_last_idr >= h->param.i_keyint_max )
 964             {
 965                 if( frm->i_type == X264_TYPE_AUTO )
 966                     frm->i_type = X264_TYPE_IDR;
 967                 if( frm->i_type != X264_TYPE_IDR )
 968                     x264_log( h, X264_LOG_ERROR, "specified frame type (%d) is not compatible with keyframe interval\n", frm->i_type );
 969             }
 970             if( frm->i_type == X264_TYPE_IDR )
 971             {
 972                 h->i_poc = 0;
 973                 h->i_frame_num = 0;
 974
 975                 /* Close GOP */
 976                 if( bframes > 0 )
 977                 {
 978                     bframes--;
 979                     h->frames.next[bframes]->i_type = X264_TYPE_P;
 980                 }
 981             }
 982
 983             if( bframes == h->param.i_bframe
 984                 || h->frames.next[bframes+1] == NULL )
 985             {
 986                 if( frm->i_type == X264_TYPE_B )
 987                     x264_log( h, X264_LOG_ERROR, "specified frame type is not compatible with max B-frames\n" );
 988                 if(    frm->i_type == X264_TYPE_AUTO
 989                     || frm->i_type == X264_TYPE_B )
 990                     frm->i_type = X264_TYPE_P;
 991             }
 992
 993             frm->i_poc = h->i_poc;
 994             h->i_poc += 2;
 995
 996             if( frm->i_type != X264_TYPE_AUTO && frm->i_type != X264_TYPE_B )
 997                 break;
 998
 999             frm->i_type = X264_TYPE_B;
1000         }
1001
1002         /* 3: move some B-frames and 1 non-B to encode queue */
1003         x264_frame_put( h->frames.current, h->frames.next[bframes] );
1004         while( bframes-- )
1005             x264_frame_put( h->frames.current, x264_frame_get( h->frames.next ) );
1006         x264_frame_get( h->frames.next );
1007     }
1008     TIMER_STOP( i_mtime_encode_frame );
1009
1010     /* ------------------- Get frame to be encoded ------------------------- */
1011     /* 4: get picture to encode */
1012     h->fenc = x264_frame_get( h->frames.current );
1013     if( h->fenc == NULL )
1014     {
1015         /* Nothing yet to encode (ex: waiting for I/P with B frames) */
1016         /* waiting for filling bframe buffer */
1017         pic->i_type = X264_TYPE_AUTO;
1018         return 0;
1019     }
1020
1021 do_encode:
1022
1023     if( h->fenc->i_type == X264_TYPE_IDR )
1024     {
1025         h->frames.i_last_idr = h->fenc->i_frame;
1026     }
1027
1028     /* ------------------- Setup frame context ----------------------------- */
1029     /* 5: Init data dependant of frame type */
1030     TIMER_START( i_mtime_encode_frame );
1031     if( h->fenc->i_type == X264_TYPE_IDR )
1032     {
1033         /* reset ref pictures */
1034         x264_reference_reset( h );
1035
1036         i_nal_type    = NAL_SLICE_IDR;
1037         i_nal_ref_idc = NAL_PRIORITY_HIGHEST;
1038         i_slice_type = SLICE_TYPE_I;
1039     }
1040     else if( h->fenc->i_type == X264_TYPE_I )
1041     {
1042         i_nal_type    = NAL_SLICE;
1043         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
1044         i_slice_type = SLICE_TYPE_I;
1045     }
1046     else if( h->fenc->i_type == X264_TYPE_P )
1047     {
1048         i_nal_type    = NAL_SLICE;
1049         i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
1050         i_slice_type = SLICE_TYPE_P;
1051     }
1052     else    /* B frame */
1053     {
1054         i_nal_type    = NAL_SLICE;
1055         i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
1056         i_slice_type = SLICE_TYPE_B;
1057     }
1058
1059     pic->i_type     =
1060     h->fdec->i_type = h->fenc->i_type;
1061     h->fdec->i_poc  = h->fenc->i_poc;
1062     h->fdec->i_frame = h->fenc->i_frame;
1063
1064
1065
1066     /* ------------------- Init                ----------------------------- */
1067     /* Init the rate control */
1068     x264_ratecontrol_start( h, i_slice_type );
1069     i_global_qp = x264_ratecontrol_qp( h );
1070     if( h->fenc->i_qpplus1 > 0 )
1071     {
1072         i_global_qp = x264_clip3( h->fenc->i_qpplus1 - 1, 0, 51 );
1073     }
1074
1075     /* build ref list 0/1 */
1076     x264_reference_build_list( h, h->fdec->i_poc );
1077
1078     /* increase frame num but only once for B frame */
1079     if( i_slice_type != SLICE_TYPE_B || h->sh.i_type != SLICE_TYPE_B )
1080     {
1081         h->i_frame_num++;
1082     }
1083
1084     /* ------------------------ Create slice header  ----------------------- */
1085     x264_slice_init( h, i_nal_type, i_slice_type, i_global_qp );
1086
1087     /* ---------------------- Write the bitstream -------------------------- */
1088     /* Init bitstream context */
1089     h->out.i_nal = 0;
1090     bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );
1091
1092     /* Write SPS and PPS */
1093     if( i_nal_type == NAL_SLICE_IDR )
1094     {
1095         /* generate sequence parameters */
1096         x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
1097         x264_sps_write( &h->out.bs, h->sps );
1098         x264_nal_end( h );
1099
1100         /* generate picture parameters */
1101         x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
1102         x264_pps_write( &h->out.bs, h->pps );
1103         x264_nal_end( h );
1104     }
1105
1106     /* Write the slice */
1107     x264_slice_write( h, i_nal_type, i_nal_ref_idc );
1108
1109     /* restore CPU state (before using float again) */
1110     x264_cpu_restore( h->param.cpu );
1111
1112     /* XXX: this scene cut won't work with B frame (it may never create IDR -> bad) */
1113     if( i_slice_type == SLICE_TYPE_P && !h->param.rc.b_stat_read
1114         && h->param.i_scenecut_threshold >= 0 )
1115     {
1116         int i_mb_i = h->stat.frame.i_mb_count[I_4x4] + h->stat.frame.i_mb_count[I_16x16];
1117         int i_mb_p = h->stat.frame.i_mb_count[P_L0] + h->stat.frame.i_mb_count[P_8x8];
1118         int i_mb_s = h->stat.frame.i_mb_count[P_SKIP];
1119         int i_mb   = h->sps->i_mb_width * h->sps->i_mb_height;
1120         int64_t i_inter_cost = h->stat.frame.i_inter_cost;
1121         int64_t i_intra_cost = h->stat.frame.i_intra_cost;
1122
1123         float f_bias;
1124         int i_gop_size = h->fenc->i_frame - h->frames.i_last_idr;
1125         float f_thresh_max = h->param.i_scenecut_threshold / 100.0;
1126         /* ratio of 10 pulled out of thin air */
1127         float f_thresh_min = f_thresh_max * h->param.i_keyint_min
1128                              / ( h->param.i_keyint_max * 4 );
1129         if( h->param.i_keyint_min == h->param.i_keyint_max )
1130              f_thresh_min= f_thresh_max;
1131
1132         /* macroblock_analyse() doesn't further analyse skipped mbs,
1133          * so we have to guess their cost */
1134         if( i_mb_s < i_mb )
1135             i_intra_cost = i_intra_cost * i_mb / (i_mb - i_mb_s);
1136
1137         if( i_gop_size < h->param.i_keyint_min / 4 )
1138             f_bias = f_thresh_min / 4;
1139         else if( i_gop_size <= h->param.i_keyint_min )
1140             f_bias = f_thresh_min * i_gop_size / h->param.i_keyint_min;
1141         else
1142         {
1143             f_bias = f_thresh_min
1144                      + ( f_thresh_max - f_thresh_min )
1145                        * ( i_gop_size - h->param.i_keyint_min )
1146                        / ( h->param.i_keyint_max - h->param.i_keyint_min );
1147         }
1148         f_bias = X264_MIN( f_bias, 1.0 );
1149
1150         /* Bad P will be reencoded as I */
1151         if( i_mb_s < i_mb &&
1152             i_inter_cost >= (1.0 - f_bias) * i_intra_cost )
1153             /* i_mb_i >= (1.0 - f_bias) * i_mb ) */
1154             /*
1155             h->out.nal[h->out.i_nal-1].i_payload > h->i_last_intra_size +
1156             h->i_last_intra_size * (3+h->i_last_intra_qp - i_global_qp) / 16 &&
1157             i_mb_count[I_4x4] + i_mb_count[I_16x16] > i_mb_count[P_SKIP] + i_mb_count[P_L0]/2 &&
1158             h->out.nal[h->out.i_nal-1].i_payload > 2 * h->i_last_inter_size &&
1159             h->frames.i_last_i > 4)*/
1160         {
1161
1162             x264_log( h, X264_LOG_DEBUG, "scene cut at %d size=%d Icost:%.0f Pcost:%.0f ratio:%.3f bias=%.3f lastIDR:%d (I:%d P:%d Skip:%d)\n",
1163                       h->fenc->i_frame,
1164                       h->out.nal[h->out.i_nal-1].i_payload,
1165                       (double)i_intra_cost, (double)i_inter_cost,
1166                       (double)i_inter_cost / i_intra_cost,
1167                       f_bias, i_gop_size,
1168                       i_mb_i, i_mb_p, i_mb_s );
1169
1170             /* Restore frame num */
1171             h->i_frame_num--;
1172
1173             for( i = 0; h->frames.current[i] && h->frames.current[i]->i_type == X264_TYPE_B; i++ );
1174             if( i > 0 )
1175             {
1176                 /* If using B-frames, force GOP to be closed.
1177                  * Even if this frame is going to be I and not IDR, forcing a
1178                  * P-frame before the scenecut will probably help compression.
1179                  *
1180                  * We don't yet know exactly which frame is the scene cut, so
1181                  * we can't assign an I-frame. Instead, change the previous
1182                  * B-frame to P, and rearrange coding order. */
1183
1184                 x264_frame_t *tmp = h->frames.current[i-1];
1185                 h->frames.current[i-1] = h->fenc;
1186                 h->fenc = tmp;
1187                 h->fenc->i_type = X264_TYPE_P;
1188             }
1189             /* Do IDR if needed */
1190             else if( i_gop_size >= h->param.i_keyint_min )
1191             {
1192                 x264_frame_t *tmp;
1193
1194                 /* Reset */
1195                 h->i_poc       = 0;
1196                 h->i_frame_num = 0;
1197
1198                 /* Reinit field of fenc */
1199                 h->fenc->i_type = X264_TYPE_IDR;
1200                 h->fenc->i_poc = 0;
1201
1202                 /* Next Poc */
1203                 h->i_poc += 2;
1204
1205                 /* Put enqueued frames back in the pool */
1206                 while( (tmp = x264_frame_get( h->frames.current ) ) != NULL )
1207                     x264_frame_put( h->frames.next, tmp );
1208                 x264_frame_sort( h->frames.next );
1209             }
1210             else
1211             {
1212                 h->fenc->i_type = X264_TYPE_I;
1213             }
1214             goto do_encode;
1215         }
1216         h->i_last_inter_size = h->out.nal[h->out.i_nal-1].i_payload;
1217     }
1218     else
1219     {
1220         h->i_last_intra_size = h->out.nal[h->out.i_nal-1].i_payload;
1221         h->i_last_intra_qp = i_global_qp;
1222     }
1223
1224     /* End bitstream, set output  */
1225     *pi_nal = h->out.i_nal;
1226     *pp_nal = &h->out.nal[0];
1227
1228     /* Set output picture properties */
1229     if( i_slice_type == SLICE_TYPE_I )
1230         pic->i_type = i_nal_type == NAL_SLICE_IDR ? X264_TYPE_IDR : X264_TYPE_I;
1231     else if( i_slice_type == SLICE_TYPE_P )
1232         pic->i_type = X264_TYPE_P;
1233     else
1234         pic->i_type = X264_TYPE_B;
1235     pic->i_pts = h->fenc->i_pts;
1236
1237     /* ---------------------- Update encoder state ------------------------- */
1238     /* update cabac */
1239     if( h->param.b_cabac )
1240     {
1241         x264_cabac_model_update( &h->cabac, i_slice_type, h->sh.pps->i_pic_init_qp + h->sh.i_qp_delta );
1242     }
1243
1244     /* handle references */
1245     if( i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE )
1246     {
1247         x264_reference_update( h );
1248     }
1249
1250     /* increase frame count */
1251     h->i_frame++;
1252
1253     /* restore CPU state (before using float again) */
1254     /* XXX: not needed? (done above) */
1255     x264_cpu_restore( h->param.cpu );
1256
1257     /* update rc */
1258     x264_ratecontrol_end( h, h->out.nal[h->out.i_nal-1].i_payload * 8 );
1259
1260     x264_frame_put( h->frames.unused, h->fenc );
1261
1262     TIMER_STOP( i_mtime_encode_frame );
1263
1264     /* ---------------------- Compute/Print statistics --------------------- */
1265     /* Slice stat */
1266     h->stat.i_slice_count[i_slice_type]++;
1267     h->stat.i_slice_size[i_slice_type] += bs_pos( &h->out.bs) / 8;
1268     h->stat.i_slice_qp[i_slice_type] += i_global_qp;
1269
1270     for( i = 0; i < 18; i++ )
1271     {
1272         h->stat.i_mb_count[h->sh.i_type][i] += h->stat.frame.i_mb_count[i];
1273     }
1274
1275     if( h->param.analyse.b_psnr )
1276     {
1277         int64_t i_sqe_y, i_sqe_u, i_sqe_v;
1278
1279         /* PSNR */
1280         i_sqe_y = x264_sqe( frame_psnr->plane[0], frame_psnr->i_stride[0], h->fenc->plane[0], h->fenc->i_stride[0], h->param.i_width, h->param.i_height );
1281         i_sqe_u = x264_sqe( frame_psnr->plane[1], frame_psnr->i_stride[1], h->fenc->plane[1], h->fenc->i_stride[1], h->param.i_width/2, h->param.i_height/2);
1282         i_sqe_v = x264_sqe( frame_psnr->plane[2], frame_psnr->i_stride[2], h->fenc->plane[2], h->fenc->i_stride[2], h->param.i_width/2, h->param.i_height/2);
1283
1284         h->stat.i_sqe_global[i_slice_type] += i_sqe_y + i_sqe_u + i_sqe_v;
1285         h->stat.f_psnr_average[i_slice_type] += x264_psnr( i_sqe_y + i_sqe_u + i_sqe_v, 3 * h->param.i_width * h->param.i_height / 2 );
1286         h->stat.f_psnr_mean_y[i_slice_type] += x264_psnr( i_sqe_y, h->param.i_width * h->param.i_height );
1287         h->stat.f_psnr_mean_u[i_slice_type] += x264_psnr( i_sqe_u, h->param.i_width * h->param.i_height / 4 );
1288         h->stat.f_psnr_mean_v[i_slice_type] += x264_psnr( i_sqe_v, h->param.i_width * h->param.i_height / 4 );
1289
1290         snprintf( psz_message, 80, " PSNR Y:%2.2f U:%2.2f V:%2.2f",
1291                   x264_psnr( i_sqe_y, h->param.i_width * h->param.i_height ),
1292                   x264_psnr( i_sqe_u, h->param.i_width * h->param.i_height / 4),
1293                   x264_psnr( i_sqe_v, h->param.i_width * h->param.i_height / 4) );
1294         psz_message[79] = '\0';
1295     }
1296     else
1297     {
1298         psz_message[0] = '\0';
1299     }
1300
1301     x264_log( h, X264_LOG_DEBUG,
1302                   "frame=%4d QP=%i NAL=%d Slice:%c Poc:%-3d I4x4:%-4d I16x16:%-4d P:%-4d SKIP:%-4d size=%d bytes%s\n",
1303               h->i_frame - 1,
1304               i_global_qp,
1305               i_nal_ref_idc,
1306               i_slice_type == SLICE_TYPE_I ? 'I' : (i_slice_type == SLICE_TYPE_P ? 'P' : 'B' ),
1307               frame_psnr->i_poc,
1308               h->stat.frame.i_mb_count[I_4x4],
1309               h->stat.frame.i_mb_count[I_16x16],
1310               h->stat.frame.i_mb_count_p,
1311               h->stat.frame.i_mb_count_skip,
1312               h->out.nal[h->out.i_nal-1].i_payload,
1313               psz_message );
1314
1315
1316 #ifdef DEBUG_MB_TYPE
1317 {
1318     static const char mb_chars[] = { 'i', 'I', 'C', 'P', '8', 'S',
1319         'D', '<', 'X', 'B', 'X', '>', 'B', 'B', 'B', 'B', '8', 'S' };
1320     int mb_xy;
1321     for( mb_xy = 0; mb_xy < h->sps->i_mb_width * h->sps->i_mb_height; mb_xy++ )
1322     {
1323         if( h->mb.type[mb_xy] < 18 && h->mb.type[mb_xy] >= 0 )
1324             fprintf( stderr, "%c ", mb_chars[ h->mb.type[mb_xy] ] );
1325         else
1326             fprintf( stderr, "? " );
1327
1328         if( (mb_xy+1) % h->sps->i_mb_width == 0 )
1329             fprintf( stderr, "\n" );
1330     }
1331 }
1332 #endif
1333
1334 #ifdef DEBUG_DUMP_FRAME
1335     /* Dump reconstructed frame */
1336     x264_frame_dump( h, frame_psnr, "fdec.yuv" );
1337 #endif
1338 #if 0
1339     if( h->i_ref0 > 0 )
1340     {
1341         x264_frame_dump( h, h->fref0[0], "ref0.yuv" );
1342     }
1343     if( h->i_ref1 > 0 )
1344     {
1345         x264_frame_dump( h, h->fref1[0], "ref1.yuv" );
1346     }
1347 #endif
1348     return 0;
1349 }
1350
1351 /****************************************************************************
1352  * x264_encoder_close:
1353  ****************************************************************************/
1354 void    x264_encoder_close  ( x264_t *h )
1355 {
1356 #ifdef DEBUG_BENCHMARK
1357     int64_t i_mtime_total = i_mtime_analyse + i_mtime_encode + i_mtime_write + i_mtime_filter + 1;
1358 #endif
1359     int64_t i_yuv_size = 3 * h->param.i_width * h->param.i_height / 2;
1360     int i;
1361
1362 #ifdef DEBUG_BENCHMARK
1363     x264_log( h, X264_LOG_INFO,
1364               "analyse=%d(%lldms) encode=%d(%lldms) write=%d(%lldms) filter=%d(%lldms)\n",
1365               (int)(100*i_mtime_analyse/i_mtime_total), i_mtime_analyse/1000,
1366               (int)(100*i_mtime_encode/i_mtime_total), i_mtime_encode/1000,
1367               (int)(100*i_mtime_write/i_mtime_total), i_mtime_write/1000,
1368               (int)(100*i_mtime_filter/i_mtime_total), i_mtime_filter/1000 );
1369 #endif
1370
1371     /* Slices used and PSNR */
1372     for( i=0; i<5; i++ )
1373     {
1374         static const int slice_order[] = { SLICE_TYPE_I, SLICE_TYPE_SI, SLICE_TYPE_P, SLICE_TYPE_SP, SLICE_TYPE_B };
1375         static const char *slice_name[] = { "P", "B", "I", "SP", "SI" };
1376         int i_slice = slice_order[i];
1377
1378         if( h->stat.i_slice_count[i_slice] > 0 )
1379         {
1380             const int i_count = h->stat.i_slice_count[i_slice];
1381             if( h->param.analyse.b_psnr )
1382             {
1383                 x264_log( h, X264_LOG_INFO,
1384                           "slice %s:%-4d Avg QP:%5.2f Avg size:%6.0f PSNR Mean Y:%5.2f U:%5.2f V:%5.2f Avg:%5.2f Global:%5.2f MSE*Size:%5.3f\n",
1385                           slice_name[i_slice],
1386                           i_count,
1387                           (double)h->stat.i_slice_qp[i_slice] / i_count,
1388                           (double)h->stat.i_slice_size[i_slice] / i_count,
1389                           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,
1390                           h->stat.f_psnr_average[i_slice] / i_count,
1391                           x264_psnr( h->stat.i_sqe_global[i_slice], i_count * i_yuv_size ),
1392                           x264_mse( h->stat.i_sqe_global[i_slice], i_count * i_yuv_size ) * h->stat.i_slice_size[i_slice] / i_count );
1393             }
1394             else
1395             {
1396                 x264_log( h, X264_LOG_INFO,
1397                           "slice %s:%-4d Avg QP:%5.2f Avg size:%6.0f\n",
1398                           slice_name[i_slice],
1399                           i_count,
1400                           (double)h->stat.i_slice_qp[i_slice] / i_count,
1401                           (double)h->stat.i_slice_size[i_slice] / i_count );
1402             }
1403         }
1404     }
1405
1406     /* MB types used */
1407     if( h->stat.i_slice_count[SLICE_TYPE_I] > 0 )
1408     {
1409         const int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_I];
1410         const double i_count = h->stat.i_slice_count[SLICE_TYPE_I] * h->mb.i_mb_count / 100.0;
1411         x264_log( h, X264_LOG_INFO,
1412                   "slice I   Avg I4x4:%.1f%%  I16x16:%.1f%%\n",
1413                   i_mb_count[I_4x4]  / i_count,
1414                   i_mb_count[I_16x16]/ i_count );
1415     }
1416     if( h->stat.i_slice_count[SLICE_TYPE_P] > 0 )
1417     {
1418         const int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_P];
1419         const double i_count = h->stat.i_slice_count[SLICE_TYPE_P] * h->mb.i_mb_count / 100.0;
1420         x264_log( h, X264_LOG_INFO,
1421                   "slice P   Avg I4x4:%.1f%%  I16x16:%.1f%%  P:%.1f%%  P8x8:%.1f%%  PSKIP:%.1f%%\n",
1422                   i_mb_count[I_4x4]  / i_count,
1423                   i_mb_count[I_16x16]/ i_count,
1424                   i_mb_count[P_L0]   / i_count,
1425                   i_mb_count[P_8x8]  / i_count,
1426                   i_mb_count[P_SKIP] / i_count );
1427     }
1428     if( h->stat.i_slice_count[SLICE_TYPE_B] > 0 )
1429     {
1430         const int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_B];
1431         const double i_count = h->stat.i_slice_count[SLICE_TYPE_B] * h->mb.i_mb_count / 100.0;
1432         x264_log( h, X264_LOG_INFO,
1433                   "slice B   Avg I4x4:%.1f%%  I16x16:%.1f%%  P:%.1f%%  B:%.1f%%  B8x8:%.1f%%  DIRECT:%.1f%%  BSKIP:%.1f%%\n",
1434                   i_mb_count[I_4x4]    / i_count,
1435                   i_mb_count[I_16x16]  / i_count,
1436                   (i_mb_count[B_L0_L0] + i_mb_count[B_L1_L1] + i_mb_count[B_L1_L0] + i_mb_count[B_L0_L1]) / i_count,
1437                   (i_mb_count[B_BI_BI] + i_mb_count[B_L0_BI] + i_mb_count[B_L1_BI] + i_mb_count[B_BI_L0] + i_mb_count[B_BI_L1]) / i_count,
1438                   i_mb_count[B_8x8]    / i_count,
1439                   i_mb_count[B_DIRECT] / i_count,
1440                   i_mb_count[B_SKIP]   / i_count );
1441     }
1442
1443     if( h->stat.i_slice_count[SLICE_TYPE_I] + h->stat.i_slice_count[SLICE_TYPE_P] + h->stat.i_slice_count[SLICE_TYPE_B] > 0 )
1444     {
1445         const int i_count = h->stat.i_slice_count[SLICE_TYPE_I] +
1446                             h->stat.i_slice_count[SLICE_TYPE_P] +
1447                             h->stat.i_slice_count[SLICE_TYPE_B];
1448         float fps = (float) h->param.i_fps_num / h->param.i_fps_den;
1449
1450         if( h->param.analyse.b_psnr )
1451             x264_log( h, X264_LOG_INFO,
1452                       "PSNR Mean Y:%5.2f U:%5.2f V:%5.2f Avg:%5.2f Global:%5.2f kb/s:%.1f\n",
1453                       (h->stat.f_psnr_mean_y[SLICE_TYPE_I] + h->stat.f_psnr_mean_y[SLICE_TYPE_P] + h->stat.f_psnr_mean_y[SLICE_TYPE_B]) / i_count,
1454                       (h->stat.f_psnr_mean_u[SLICE_TYPE_I] + h->stat.f_psnr_mean_u[SLICE_TYPE_P] + h->stat.f_psnr_mean_u[SLICE_TYPE_B]) / i_count,
1455                       (h->stat.f_psnr_mean_v[SLICE_TYPE_I] + h->stat.f_psnr_mean_v[SLICE_TYPE_P] + h->stat.f_psnr_mean_v[SLICE_TYPE_B]) / i_count,
1456
1457                       (h->stat.f_psnr_average[SLICE_TYPE_I] + h->stat.f_psnr_average[SLICE_TYPE_P] + h->stat.f_psnr_average[SLICE_TYPE_B]) / i_count,
1458
1459                       x264_psnr( h->stat.i_sqe_global[SLICE_TYPE_I] + h->stat.i_sqe_global[SLICE_TYPE_P]+ h->stat.i_sqe_global[SLICE_TYPE_B],
1460                                  i_count * i_yuv_size ),
1461                       fps * 8*(h->stat.i_slice_size[SLICE_TYPE_I]+h->stat.i_slice_size[SLICE_TYPE_P]+h->stat.i_slice_size[SLICE_TYPE_B]) / i_count / 1000 );
1462         else
1463             x264_log( h, X264_LOG_INFO,
1464                       "kb/s:%.1f\n",
1465                       fps * 8*(h->stat.i_slice_size[SLICE_TYPE_I]+h->stat.i_slice_size[SLICE_TYPE_P]+h->stat.i_slice_size[SLICE_TYPE_B]) / i_count / 1000 );
1466     }
1467
1468     /* frames */
1469     for( i = 0; i < X264_BFRAME_MAX + 1; i++ )
1470     {
1471         if( h->frames.current[i] ) x264_frame_delete( h->frames.current[i] );
1472         if( h->frames.next[i] )    x264_frame_delete( h->frames.next[i] );
1473         if( h->frames.unused[i] )  x264_frame_delete( h->frames.unused[i] );
1474     }
1475     /* ref frames */
1476     for( i = 0; i < h->param.i_frame_reference+2; i++ )
1477     {
1478         x264_frame_delete( h->frames.reference[i] );
1479     }
1480
1481     /* param */
1482     if( h->param.rc.psz_stat_out )
1483         free( h->param.rc.psz_stat_out );
1484     if( h->param.rc.psz_stat_in )
1485         free( h->param.rc.psz_stat_in );
1486     if( h->param.rc.psz_rc_eq )
1487         free( h->param.rc.psz_rc_eq );
1488
1489     /* rc */
1490     x264_ratecontrol_delete( h );
1491
1492     x264_macroblock_cache_end( h );
1493     x264_free( h->out.p_bitstream );
1494     x264_free( h );
1495 }
1496