encoder.c 47.4 KB
Newer Older
Laurent Aimar's avatar
Laurent Aimar committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
/*****************************************************************************
 * x264: h264 encoder
 *****************************************************************************
 * Copyright (C) 2003 Laurent Aimar
 * $Id: encoder.c,v 1.1 2004/06/03 19:27:08 fenrir Exp $
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <math.h>

30 31
#include "common/common.h"
#include "common/cpu.h"
Laurent Aimar's avatar
Laurent Aimar committed
32 33 34 35 36 37 38

#include "set.h"
#include "analyse.h"
#include "ratecontrol.h"
#include "macroblock.h"

//#define DEBUG_MB_TYPE
39
//#define DEBUG_DUMP_FRAME
Laurent Aimar's avatar
Laurent Aimar committed
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

static int64_t i_mtime_encode_frame = 0;

static int64_t i_mtime_analyse = 0;
static int64_t i_mtime_encode = 0;
static int64_t i_mtime_write = 0;
static int64_t i_mtime_filter = 0;
#define TIMER_START( d ) \
    { \
        int64_t d##start = x264_mdate();

#define TIMER_STOP( d ) \
        d += x264_mdate() - d##start;\
    }


/****************************************************************************
 *
 ******************************* x264 libs **********************************
 *
 ****************************************************************************/
61
static float x264_sqe( uint8_t *pix1, int i_pix_stride, uint8_t *pix2, int i_pix2_stride, int i_width, int i_height )
Laurent Aimar's avatar
Laurent Aimar committed
62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
{
    int64_t i_sqe = 0;

    int x, y;

    for( y = 0; y < i_height; y++ )
    {
        for( x = 0; x < i_width; x++ )
        {
            int tmp;

            tmp = pix1[y*i_pix_stride+x] - pix2[y*i_pix2_stride+x];

            i_sqe += tmp * tmp;
        }
    }
78 79
    return i_sqe;
}
Laurent Aimar's avatar
Laurent Aimar committed
80

81 82 83
static float x264_mse( int64_t i_sqe, int64_t i_size )
{
    return (double)i_sqe / ((double)65025.0 * (double)i_size);
Laurent Aimar's avatar
Laurent Aimar committed
84 85
}

86 87 88 89 90 91 92 93 94 95
static float x264_psnr( int64_t i_sqe, int64_t i_size )
{
    double f_mse = (double)i_sqe / ((double)65025.0 * (double)i_size);
    if( f_mse <= 0.0000000001 ) /* Max 100dB */
        return 100;

    return (float)(-10.0 * log( f_mse ) / log( 10.0 ));
}

#ifdef DEBUG_DUMP_FRAME
Laurent Aimar's avatar
Laurent Aimar committed
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
static void x264_frame_dump( x264_t *h, x264_frame_t *fr, char *name )
{
    FILE * f = fopen( name, "a" );
    int i, y;

    fseek( f, 0, SEEK_END );

    for( i = 0; i < fr->i_plane; i++ )
    {
        for( y = 0; y < h->param.i_height / ( i == 0 ? 1 : 2 ); y++ )
        {
            fwrite( &fr->plane[i][y*fr->i_stride[i]], 1, h->param.i_width / ( i == 0 ? 1 : 2 ), f );
        }
    }
    fclose( f );
}
#endif


/* Fill "default" values */
static void x264_slice_header_init( x264_slice_header_t *sh, x264_param_t *param,
                                    x264_sps_t *sps, x264_pps_t *pps,
                                    int i_type, int i_idr_pic_id, int i_frame )
{
    /* First we fill all field */
    sh->sps = sps;
    sh->pps = pps;

    sh->i_type      = i_type;
    sh->i_first_mb  = 0;
    sh->i_pps_id    = pps->i_id;

    sh->i_frame_num = i_frame;

    sh->b_field_pic = 0;    /* Not field support for now */
    sh->b_bottom_field = 1; /* not yet used */

    sh->i_idr_pic_id = i_idr_pic_id;

    /* poc stuff, fixed later */
    sh->i_poc_lsb = 0;
    sh->i_delta_poc_bottom = 0;
    sh->i_delta_poc[0] = 0;
    sh->i_delta_poc[1] = 0;

    sh->i_redundant_pic_cnt = 0;

143
    sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
Laurent Aimar's avatar
Laurent Aimar committed
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298

    sh->b_num_ref_idx_override = 0;
    sh->i_num_ref_idx_l0_active = 1;
    sh->i_num_ref_idx_l1_active = 1;

    sh->i_cabac_init_idc = param->i_cabac_init_idc;

    sh->i_qp_delta = 0;
    sh->b_sp_for_swidth = 0;
    sh->i_qs_delta = 0;

    if( param->b_deblocking_filter )
    {
        sh->i_disable_deblocking_filter_idc = 0;
    }
    else
    {
        sh->i_disable_deblocking_filter_idc = 1;
    }
    sh->i_alpha_c0_offset = param->i_deblocking_filter_alphac0 << 1;
    sh->i_beta_offset = param->i_deblocking_filter_beta << 1;
}

static void x264_slice_header_write( bs_t *s, x264_slice_header_t *sh, int i_nal_ref_idc )
{
    bs_write_ue( s, sh->i_first_mb );
    bs_write_ue( s, sh->i_type + 5 );   /* same type things */
    bs_write_ue( s, sh->i_pps_id );
    bs_write( s, sh->sps->i_log2_max_frame_num, sh->i_frame_num );

    if( sh->i_idr_pic_id >= 0 ) /* NAL IDR */
    {
        bs_write_ue( s, sh->i_idr_pic_id );
    }

    if( sh->sps->i_poc_type == 0 )
    {
        bs_write( s, sh->sps->i_log2_max_poc_lsb, sh->i_poc_lsb );
        if( sh->pps->b_pic_order && !sh->b_field_pic )
        {
            bs_write_se( s, sh->i_delta_poc_bottom );
        }
    }
    else if( sh->sps->i_poc_type == 1 && !sh->sps->b_delta_pic_order_always_zero )
    {
        bs_write_se( s, sh->i_delta_poc[0] );
        if( sh->pps->b_pic_order && !sh->b_field_pic )
        {
            bs_write_se( s, sh->i_delta_poc[1] );
        }
    }

    if( sh->pps->b_redundant_pic_cnt )
    {
        bs_write_ue( s, sh->i_redundant_pic_cnt );
    }

    if( sh->i_type == SLICE_TYPE_B )
    {
        bs_write1( s, sh->b_direct_spatial_mv_pred );
    }
    if( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_SP || sh->i_type == SLICE_TYPE_B )
    {
        bs_write1( s, sh->b_num_ref_idx_override );
        if( sh->b_num_ref_idx_override )
        {
            bs_write_ue( s, sh->i_num_ref_idx_l0_active - 1 );
            if( sh->i_type == SLICE_TYPE_B )
            {
                bs_write_ue( s, sh->i_num_ref_idx_l1_active - 1 );
            }
        }
    }

    /* ref pic list reordering */
    if( sh->i_type != SLICE_TYPE_I )
    {
        int b_ref_pic_list_reordering_l0 = 0;
        bs_write1( s, b_ref_pic_list_reordering_l0 );
        if( b_ref_pic_list_reordering_l0 )
        {
            /* FIXME */
        }
    }
    if( sh->i_type == SLICE_TYPE_B )
    {
        int b_ref_pic_list_reordering_l1 = 0;
        bs_write1( s, b_ref_pic_list_reordering_l1 );
        if( b_ref_pic_list_reordering_l1 )
        {
            /* FIXME */
        }
    }

    if( ( sh->pps->b_weighted_pred && ( sh->i_type == SLICE_TYPE_P || sh->i_type == SLICE_TYPE_SP ) ) ||
        ( sh->pps->b_weighted_bipred == 1 && sh->i_type == SLICE_TYPE_B ) )
    {
        /* FIXME */
    }

    if( i_nal_ref_idc != 0 )
    {
        if( sh->i_idr_pic_id >= 0 )
        {
            bs_write1( s, 0 );  /* no output of prior pics flag */
            bs_write1( s, 0 );  /* long term reference flag */
        }
        else
        {
            bs_write1( s, 0 );  /* adaptive_ref_pic_marking_mode_flag */
            /* FIXME */
        }
    }

    if( sh->pps->b_cabac && sh->i_type != SLICE_TYPE_I )
    {
        bs_write_ue( s, sh->i_cabac_init_idc );
    }
    bs_write_se( s, sh->i_qp_delta );      /* slice qp delta */
#if 0
    if( sh->i_type == SLICE_TYPE_SP || sh->i_type == SLICE_TYPE_SI )
    {
        if( sh->i_type == SLICE_TYPE_SP )
        {
            bs_write1( s, sh->b_sp_for_swidth );
        }
        bs_write_se( s, sh->i_qs_delta );
    }
#endif

    if( sh->pps->b_deblocking_filter_control )
    {
        bs_write_ue( s, sh->i_disable_deblocking_filter_idc );
        if( sh->i_disable_deblocking_filter_idc != 1 )
        {
            bs_write_se( s, sh->i_alpha_c0_offset >> 1 );
            bs_write_se( s, sh->i_beta_offset >> 1 );
        }
    }
}

/****************************************************************************
 *
 ****************************************************************************
 ****************************** External API*********************************
 ****************************************************************************
 *
 ****************************************************************************/

/****************************************************************************
 * x264_encoder_open:
 ****************************************************************************/
x264_t *x264_encoder_open   ( x264_param_t *param )
{
    x264_t *h = x264_malloc( sizeof( x264_t ) );
Loren Merritt's avatar
Loren Merritt committed
299
    int i, i_slice;
Laurent Aimar's avatar
Laurent Aimar committed
300

301
    /* Create a copy of param */
302
    memcpy( &h->param, param, sizeof( x264_param_t ) );
303 304 305 306 307 308
    if( h->param.rc.psz_stat_out )
        h->param.rc.psz_stat_out = strdup( h->param.rc.psz_stat_out );
    if( h->param.rc.psz_stat_in )
        h->param.rc.psz_stat_in = strdup( h->param.rc.psz_stat_in );
    if( h->param.rc.psz_rc_eq )
        h->param.rc.psz_rc_eq = strdup( h->param.rc.psz_rc_eq );
309

Laurent Aimar's avatar
Laurent Aimar committed
310 311 312
    /* Check parameters validity */
    if( param->i_width <= 0  || param->i_height <= 0 )
    {
313 314
        x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
                  param->i_width, param->i_height );
Laurent Aimar's avatar
Laurent Aimar committed
315 316 317 318 319 320
        free( h );
        return NULL;
    }

    if( param->i_width % 16 != 0 || param->i_height % 16 != 0 )
    {
321
        x264_log( h, X264_LOG_ERROR, "width %% 16 != 0 pr height %% 16 != 0 (%dx%d)\n",
Laurent Aimar's avatar
Laurent Aimar committed
322 323 324 325 326 327
                 param->i_width, param->i_height );
        free( h );
        return NULL;
    }
    if( param->i_csp != X264_CSP_I420 )
    {
328
        x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420 supported)\n" );
Laurent Aimar's avatar
Laurent Aimar committed
329 330 331 332 333 334 335 336 337 338
        free( h );
        return NULL;
    }

    /* Fix parameters values */
    h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, 15 );
    if( h->param.i_idrframe <= 0 )
        h->param.i_idrframe = 1;
    if( h->param.i_iframe <= 0 )
        h->param.i_iframe = 1;
Loren Merritt's avatar
Loren Merritt committed
339
    h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_BFRAME_MAX );
Laurent Aimar's avatar
Laurent Aimar committed
340 341 342 343 344 345

    h->param.i_deblocking_filter_alphac0 = x264_clip3( h->param.i_deblocking_filter_alphac0, -6, 6 );
    h->param.i_deblocking_filter_beta    = x264_clip3( h->param.i_deblocking_filter_beta, -6, 6 );

    h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, -1, 2 );

346
    param->analyse.i_subpel_refine = x264_clip3( param->analyse.i_subpel_refine, 1, 5 );
347 348
    if( param->analyse.inter & X264_ANALYSE_PSUB8x8 )
        param->analyse.inter &= X264_ANALYSE_PSUB16x16;
349

Loren Merritt's avatar
Loren Merritt committed
350 351 352 353 354
    if( h->param.rc.f_qblur < 0 )
        h->param.rc.f_qblur = 0;
    if( h->param.rc.f_complexity_blur < 0 )
        h->param.rc.f_complexity_blur = 0;

355 356 357
    /* VUI */
    if( h->param.vui.i_sar_width > 0 && h->param.vui.i_sar_height > 0 )
    {
358 359 360
        int i_w = param->vui.i_sar_width;
        int i_h = param->vui.i_sar_height;
        int a = i_w, b = i_h;
361 362 363 364 365 366 367 368 369

        while( b != 0 )
        {
            int t = a;

            a = b;
            b = t % b;
        }

370 371 372
        i_w /= a;
        i_h /= a;
        while( i_w > 65535 || i_h > 65535 )
373
        {
374 375
            i_w /= 2;
            i_h /= 2;
376 377 378 379
        }

        h->param.vui.i_sar_width = 0;
        h->param.vui.i_sar_height = 0;
380
        if( i_w == 0 || i_h == 0 )
381 382 383
        {
            x264_log( h, X264_LOG_ERROR, "cannot create valid sample aspect ratio\n" );
        }
384
        else if( i_w == i_h )
385 386 387 388 389
        {
            x264_log( h, X264_LOG_INFO, "no need for a SAR\n" );
        }
        else
        {
390 391 392
            x264_log( h, X264_LOG_INFO, "using SAR=%d/%d\n", i_w, i_h );
            h->param.vui.i_sar_width = i_w;
            h->param.vui.i_sar_height = i_h;
393 394 395 396
        }
    }


Laurent Aimar's avatar
Laurent Aimar committed
397 398 399 400 401 402 403 404 405 406 407 408 409 410 411
    /* Init x264_t */
    h->out.i_nal = 0;
    h->out.i_bitstream = 1000000; /* FIXME estimate max size (idth/height) */
    h->out.p_bitstream = x264_malloc( h->out.i_bitstream );

    h->i_frame = 0;
    h->i_frame_num = 0;
    h->i_poc   = 0;
    h->i_idr_pic_id = 0;

    h->sps = &h->sps_array[0];
    x264_sps_init( h->sps, 0, &h->param );

    h->pps = &h->pps_array[0];
    x264_pps_init( h->pps, 0, &h->param, h->sps);
412 413
    
    h->mb.i_mb_count = h->sps->i_mb_width * h->sps->i_mb_height;
Laurent Aimar's avatar
Laurent Aimar committed
414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432

    /* Init frames. */
    for( i = 0; i < X264_BFRAME_MAX + 1; i++ )
    {
        h->frames.current[i] = NULL;
        h->frames.next[i]    = NULL;
        h->frames.unused[i]  = NULL;
    }
    for( i = 0; i < 1 + h->param.i_bframe; i++ )
    {
        h->frames.unused[i] =  x264_frame_new( h );
    }
    for( i = 0; i < 2 + h->param.i_frame_reference; i++ )
    {
        /* 2 = 1 backward ref  + 1 fdec */
        h->frames.reference[i] = x264_frame_new( h );
    }
    h->frames.i_last_idr = h->param.i_idrframe;
    h->frames.i_last_i   = h->param.i_iframe;
433
    h->frames.i_input    = 0;
Laurent Aimar's avatar
Laurent Aimar committed
434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456

    h->i_ref0 = 0;
    h->i_ref1 = 0;

    h->fdec = h->frames.reference[0];

    /* init mb cache */
    x264_macroblock_cache_init( h );

    /* init cabac adaptive model */
    x264_cabac_model_init( &h->cabac );

    /* init CPU functions */
    x264_predict_16x16_init( h->param.cpu, h->predict_16x16 );
    x264_predict_8x8_init( h->param.cpu, h->predict_8x8 );
    x264_predict_4x4_init( h->param.cpu, h->predict_4x4 );

    x264_pixel_init( h->param.cpu, &h->pixf );
    x264_dct_init( h->param.cpu, &h->dctf );
    x264_mc_init( h->param.cpu, h->mc );
    x264_csp_init( h->param.cpu, h->param.i_csp, &h->csp );

    /* rate control */
457 458
    if( x264_ratecontrol_new( h ) < 0 )
        return NULL;
459 460 461

    h->i_last_intra_size = 0;
    h->i_last_inter_size = 0;
Laurent Aimar's avatar
Laurent Aimar committed
462 463

    /* stat */
Loren Merritt's avatar
Loren Merritt committed
464
    for( i_slice = 0; i_slice < 5; i_slice++ )
Laurent Aimar's avatar
Laurent Aimar committed
465
    {
Loren Merritt's avatar
Loren Merritt committed
466 467 468 469 470 471 472 473 474 475
        h->stat.i_slice_count[i_slice] = 0;
        h->stat.i_slice_size[i_slice] = 0;
        h->stat.i_slice_qp[i_slice] = 0;

        h->stat.i_sqe_global[i_slice] = 0;
        h->stat.f_psnr_average[i_slice] = 0.0;
        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;
        
        for( i = 0; i < 18; i++ )
            h->stat.i_mb_count[i_slice][i] = 0;
Laurent Aimar's avatar
Laurent Aimar committed
476
    }
477 478 479 480 481 482 483 484 485

    x264_log( h, X264_LOG_INFO, "using cpu capabilities %s%s%s%s%s%s\n",
             param->cpu&X264_CPU_MMX ? "MMX " : "",
             param->cpu&X264_CPU_MMXEXT ? "MMXEXT " : "",
             param->cpu&X264_CPU_SSE ? "SSE " : "",
             param->cpu&X264_CPU_SSE2 ? "SSE2 " : "",
             param->cpu&X264_CPU_3DNOW ? "3DNow! " : "",
             param->cpu&X264_CPU_ALTIVEC ? "Altivec " : "" );

Laurent Aimar's avatar
Laurent Aimar committed
486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565
    return h;
}

/* internal usage */
static void x264_nal_start( x264_t *h, int i_type, int i_ref_idc )
{
    x264_nal_t *nal = &h->out.nal[h->out.i_nal];

    nal->i_ref_idc = i_ref_idc;
    nal->i_type    = i_type;

    bs_align_0( &h->out.bs );   /* not needed */

    nal->i_payload= 0;
    nal->p_payload= &h->out.p_bitstream[bs_pos( &h->out.bs) / 8];
}
static void x264_nal_end( x264_t *h )
{
    x264_nal_t *nal = &h->out.nal[h->out.i_nal];

    bs_align_0( &h->out.bs );   /* not needed */

    nal->i_payload = &h->out.p_bitstream[bs_pos( &h->out.bs)/8] - nal->p_payload;

    h->out.i_nal++;
}

/****************************************************************************
 * x264_encoder_headers:
 ****************************************************************************/
int x264_encoder_headers( x264_t *h, x264_nal_t **pp_nal, int *pi_nal )
{
    /* init bitstream context */
    h->out.i_nal = 0;
    bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );

    /* Put SPS and PPS */
    if( h->i_frame == 0 )
    {
        /* generate sequence parameters */
        x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
        x264_sps_write( &h->out.bs, h->sps );
        x264_nal_end( h );

        /* generate picture parameters */
        x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
        x264_pps_write( &h->out.bs, h->pps );
        x264_nal_end( h );
    }
    /* now set output*/
    *pi_nal = h->out.i_nal;
    *pp_nal = &h->out.nal[0];

    return 0;
}


static void x264_frame_put( x264_frame_t *list[X264_BFRAME_MAX], x264_frame_t *frame )
{
    int i = 0;

    while( list[i] != NULL ) i++;

    list[i] = frame;
}

static x264_frame_t *x264_frame_get( x264_frame_t *list[X264_BFRAME_MAX+1] )
{
    x264_frame_t *frame = list[0];
    int i;

    for( i = 0; i < X264_BFRAME_MAX; i++ )
    {
        list[i] = list[i+1];
    }
    list[X264_BFRAME_MAX] = NULL;

    return frame;
}

566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584
/* Sort queued frames into input order */
static void x264_frame_sort( x264_frame_t *list[X264_BFRAME_MAX+1] )
{
    int i, b_ok;
    do {
        b_ok = 1;
        for( i = 0; i < X264_BFRAME_MAX && list[i+1]; i++ )
        {
            if( list[i]->i_frame > list[i+1]->i_frame )
            {
                x264_frame_t *tmp = list[i+1];
                list[i+1] = list[i];
                list[i] = tmp;
                b_ok = 0;
            }
        }
    } while( !b_ok );
}

Laurent Aimar's avatar
Laurent Aimar committed
585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694
static inline void x264_reference_build_list( x264_t *h, int i_poc )
{
    int i;
    int b_ok;

    /* build ref list 0/1 */
    h->i_ref0 = 0;
    h->i_ref1 = 0;
    for( i = 1; i < h->param.i_frame_reference+2; i++ )
    {
        if( h->frames.reference[i]->i_poc >= 0 )
        {
            if( h->frames.reference[i]->i_poc < i_poc )
            {
                h->fref0[h->i_ref0++] = h->frames.reference[i];
            }
            else if( h->frames.reference[i]->i_poc > i_poc )
            {
                h->fref1[h->i_ref1++] = h->frames.reference[i];
            }
        }
    }
    /* Order ref0 from higher to lower poc */
    do
    {
        b_ok = 1;
        for( i = 0; i < h->i_ref0 - 1; i++ )
        {
            if( h->fref0[i]->i_poc < h->fref0[i+1]->i_poc )
            {
                x264_frame_t *tmp = h->fref0[i+1];

                h->fref0[i+1] = h->fref0[i];
                h->fref0[i] = tmp;
                b_ok = 0;
                break;
            }
        }
    } while( !b_ok );
    /* Order ref1 from lower to higher poc (bubble sort) for B-frame */
    do
    {
        b_ok = 1;
        for( i = 0; i < h->i_ref1 - 1; i++ )
        {
            if( h->fref1[i]->i_poc > h->fref1[i+1]->i_poc )
            {
                x264_frame_t *tmp = h->fref1[i+1];

                h->fref1[i+1] = h->fref1[i];
                h->fref1[i] = tmp;
                b_ok = 0;
                break;
            }
        }
    } while( !b_ok );

    if( h->i_ref0 > h->param.i_frame_reference )
    {
        h->i_ref0 = h->param.i_frame_reference;
    }
    if( h->i_ref1 > 1 )
    {
        h->i_ref1 = 1;
    }
}

static inline void x264_reference_update( x264_t *h )
{
    int i;

    /* apply deblocking filter to the current decoded picture */
    if( h->param.b_deblocking_filter )
    {
        TIMER_START( i_mtime_filter );
        x264_frame_deblocking_filter( h, h->sh.i_type );
        TIMER_STOP( i_mtime_filter );
    }
    /* expand border */
    x264_frame_expand_border( h->fdec );

    /* move frame in the buffer */
    h->fdec = h->frames.reference[h->param.i_frame_reference+1];
    for( i = h->param.i_frame_reference+1; i > 0; i-- )
    {
        h->frames.reference[i] = h->frames.reference[i-1];
    }
    h->frames.reference[0] = h->fdec;
}

static inline void x264_reference_reset( x264_t *h )
{
    int i;

    /* reset ref pictures */
    for( i = 1; i < h->param.i_frame_reference+2; i++ )
    {
        h->frames.reference[i]->i_poc = -1;
    }
    h->frames.reference[0]->i_poc = 0;
}

static inline void x264_slice_init( x264_t *h, int i_nal_type, int i_slice_type, int i_global_qp )
{
    /* ------------------------ Create slice header  ----------------------- */
    if( i_nal_type == NAL_SLICE_IDR )
    {
        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 );

        /* increment id */
695
        h->i_idr_pic_id = ( h->i_idr_pic_id + 1 ) % 65536;
Laurent Aimar's avatar
Laurent Aimar committed
696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
    }
    else
    {
        x264_slice_header_init( &h->sh, &h->param, h->sps, h->pps, i_slice_type, -1, h->i_frame_num - 1 );

        /* always set the real higher num of ref frame used */
        h->sh.b_num_ref_idx_override = 1;
        h->sh.i_num_ref_idx_l0_active = h->i_ref0 <= 0 ? 1 : h->i_ref0;
        h->sh.i_num_ref_idx_l1_active = h->i_ref1 <= 0 ? 1 : h->i_ref1;
    }

    if( h->sps->i_poc_type == 0 )
    {
        h->sh.i_poc_lsb = h->fdec->i_poc & ( (1 << h->sps->i_log2_max_poc_lsb) - 1 );
        h->sh.i_delta_poc_bottom = 0;   /* XXX won't work for field */
    }
    else if( h->sps->i_poc_type == 1 )
    {
        /* FIXME TODO FIXME */
    }
    else
    {
        /* Nothing to do ? */
    }

    /* global qp */
    h->sh.i_qp_delta = i_global_qp - h->pps->i_pic_init_qp;

    /* get adapative cabac model if needed */
    if( h->param.b_cabac )
    {
        if( h->param.i_cabac_init_idc == -1 )
        {
            h->sh.i_cabac_init_idc = x264_cabac_model_get( &h->cabac, i_slice_type );
        }
    }
732 733

    x264_macroblock_slice_init( h );
Laurent Aimar's avatar
Laurent Aimar committed
734 735
}

736
static inline void x264_slice_write( x264_t *h, int i_nal_type, int i_nal_ref_idc )
Laurent Aimar's avatar
Laurent Aimar committed
737 738 739 740 741 742
{
    int i_skip;
    int mb_xy;
    int i;

    /* Init stats */
743 744 745
    h->stat.frame.i_hdr_bits  =
    h->stat.frame.i_itex_bits =
    h->stat.frame.i_ptex_bits =
746 747 748
    h->stat.frame.i_misc_bits =
    h->stat.frame.i_intra_cost =
    h->stat.frame.i_inter_cost = 0;
Loren Merritt's avatar
Loren Merritt committed
749
    for( i = 0; i < 18; i++ )
750
        h->stat.frame.i_mb_count[i] = 0;
Laurent Aimar's avatar
Laurent Aimar committed
751 752 753 754 755 756 757 758

    /* Slice */
    x264_nal_start( h, i_nal_type, i_nal_ref_idc );

    /* Slice header */
    x264_slice_header_write( &h->out.bs, &h->sh, i_nal_ref_idc );
    if( h->param.b_cabac )
    {
759
        /* alignment needed */
Laurent Aimar's avatar
Laurent Aimar committed
760 761 762 763 764 765 766 767 768 769 770 771 772 773
        bs_align_1( &h->out.bs );

        /* init cabac */
        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 );
        x264_cabac_encode_init ( &h->cabac, &h->out.bs );
    }
    h->mb.i_last_qp = h->pps->i_pic_init_qp + h->sh.i_qp_delta;
    h->mb.i_last_dqp = 0;

    for( mb_xy = 0, i_skip = 0; mb_xy < h->sps->i_mb_width * h->sps->i_mb_height; mb_xy++ )
    {
        const int i_mb_y = mb_xy / h->sps->i_mb_width;
        const int i_mb_x = mb_xy % h->sps->i_mb_width;

774 775
        int mb_spos = bs_pos(&h->out.bs);

Laurent Aimar's avatar
Laurent Aimar committed
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
        /* load cache */
        x264_macroblock_cache_load( h, i_mb_x, i_mb_y );

        /* analyse parameters
         * Slice I: choose I_4x4 or I_16x16 mode
         * Slice P: choose between using P mode or intra (4x4 or 16x16)
         * */
        TIMER_START( i_mtime_analyse );
        x264_macroblock_analyse( h );
        TIMER_STOP( i_mtime_analyse );

        /* encode this macrobock -> be carefull it can change the mb type to P_SKIP if needed */
        TIMER_START( i_mtime_encode );
        x264_macroblock_encode( h );
        TIMER_STOP( i_mtime_encode );

        TIMER_START( i_mtime_write );
        if( IS_SKIP( h->mb.i_type ) )
        {
            if( h->param.b_cabac )
            {
                if( mb_xy > 0 )
                {
                    /* not end_of_slice_flag */
                    x264_cabac_encode_terminal( &h->cabac, 0 );
                }

                x264_cabac_mb_skip( h, 1 );
            }
            else
            {
                i_skip++;
            }
        }
        else
        {
            if( h->param.b_cabac )
            {
                if( mb_xy > 0 )
                {
                    /* not end_of_slice_flag */
                    x264_cabac_encode_terminal( &h->cabac, 0 );
                }
                if( h->sh.i_type != SLICE_TYPE_I )
                {
                    x264_cabac_mb_skip( h, 0 );
                }
                x264_macroblock_write_cabac( h, &h->out.bs );
            }
            else
            {
                if( h->sh.i_type != SLICE_TYPE_I )
                {
                    bs_write_ue( &h->out.bs, i_skip );  /* skip run */
                    i_skip = 0;
                }
                x264_macroblock_write_cavlc( h, &h->out.bs );
            }
        }
        TIMER_STOP( i_mtime_write );

        /* save cache */
        x264_macroblock_cache_save( h );

840
        h->stat.frame.i_mb_count[h->mb.i_type]++;
841 842

        x264_ratecontrol_mb(h, bs_pos(&h->out.bs) - mb_spos);
Laurent Aimar's avatar
Laurent Aimar committed
843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874
    }

    if( h->param.b_cabac )
    {
        /* end of slice */
        x264_cabac_encode_terminal( &h->cabac, 1 );
    }
    else if( i_skip > 0 )
    {
        bs_write_ue( &h->out.bs, i_skip );  /* last skip run */
    }

    if( h->param.b_cabac )
    {
        int i_cabac_word;
        x264_cabac_encode_flush( &h->cabac );
        /* TODO cabac stuffing things (p209) */
        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;

        while( i_cabac_word > 0 )
        {
            bs_write( &h->out.bs, 16, 0x0000 );
            i_cabac_word--;
        }
    }
    else
    {
        /* rbsp_slice_trailing_bits */
        bs_rbsp_trailing( &h->out.bs );
    }

    x264_nal_end( h );
875 876 877 878 879 880

    /* Compute misc bits */
    h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
                              - h->stat.frame.i_itex_bits
                              - h->stat.frame.i_ptex_bits
                              - h->stat.frame.i_hdr_bits;
Laurent Aimar's avatar
Laurent Aimar committed
881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899
}

/****************************************************************************
 * x264_encoder_encode:
 *  XXX: i_poc   : is the poc of the current given picture
 *       i_frame : is the number of the frame being coded
 *  ex:  type frame poc
 *       I      0   2*0
 *       P      1   2*3
 *       B      2   2*1
 *       B      3   2*2
 *       P      4   2*6
 *       B      5   2*4
 *       B      6   2*5
 ****************************************************************************/
int     x264_encoder_encode( x264_t *h,
                             x264_nal_t **pp_nal, int *pi_nal,
                             x264_picture_t *pic )
{
900
    x264_frame_t   *frame_psnr = h->fdec; /* just to keep the current decoded frame for psnr calculation */
Laurent Aimar's avatar
Laurent Aimar committed
901 902 903 904 905 906 907 908
    int     i_nal_type;
    int     i_nal_ref_idc;
    int     i_slice_type;

    int i;

    int   i_global_qp;

Loren Merritt's avatar
Loren Merritt committed
909 910
    char psz_message[80];

Laurent Aimar's avatar
Laurent Aimar committed
911 912 913 914 915 916 917 918 919
    /* no data out */
    *pi_nal = 0;
    *pp_nal = NULL;


    /* ------------------- Setup new frame from picture -------------------- */
    TIMER_START( i_mtime_encode_frame );
    if( pic != NULL )
    {
920
        /* 1: Copy the picture to a frame and move it to a buffer */
Laurent Aimar's avatar
Laurent Aimar committed
921 922 923 924
        x264_frame_t *fenc = x264_frame_get( h->frames.unused );

        x264_frame_copy_picture( h, fenc, pic );

925 926
        fenc->i_frame = h->frames.i_input++;

927 928 929
        x264_frame_put( h->frames.next, fenc );

        if( h->frames.i_input <= h->param.i_bframe )
930
        {
931 932 933 934
            /* Nothing yet to encode */
            /* waiting for filling bframe buffer */
            pic->i_type = X264_TYPE_AUTO;
            return 0;
935
        }
936
    }
Laurent Aimar's avatar
Laurent Aimar committed
937

938 939 940 941 942
    if( h->frames.current[0] == NULL )
    {
        /* 2: Select frame types */
        x264_frame_t *frm;
        int bframes;
Laurent Aimar's avatar
Laurent Aimar committed
943

944 945
        if( h->frames.next[0] == NULL )
            return 0;
Laurent Aimar's avatar
Laurent Aimar committed
946

947
        if( h->param.rc.b_stat_read )
Laurent Aimar's avatar
Laurent Aimar committed
948
        {
949 950 951 952
            /* Use the frame types from the first pass */
            for( i = 0; h->frames.next[i] != NULL; i++ )
                h->frames.next[i]->i_type =
                    x264_ratecontrol_slice_type( h, h->frames.next[i]->i_frame );
Laurent Aimar's avatar
Laurent Aimar committed
953
        }
954 955

        for( bframes = 0;; bframes++ )
Laurent Aimar's avatar
Laurent Aimar committed
956
        {
957 958 959 960
            frm = h->frames.next[bframes];

            if( h->frames.i_last_i + bframes + 1 >= h->param.i_iframe
                && frm->i_type != X264_TYPE_IDR )
Laurent Aimar's avatar
Laurent Aimar committed
961
            {
962 963 964
                if(    frm->i_type == X264_TYPE_P
                    || frm->i_type == X264_TYPE_B )
                    x264_log( h, X264_LOG_ERROR, "specified frame type is not compatible with keyframe interval\n" );
Laurent Aimar's avatar
Laurent Aimar committed
965

966 967
                frm->i_type = X264_TYPE_I;
            }
Laurent Aimar's avatar
Laurent Aimar committed
968

969 970 971 972
            if( frm->i_type == X264_TYPE_IDR
                || ( frm->i_type == X264_TYPE_I &&
                   ( h->frames.i_last_idr + 1 >= h->param.i_idrframe
                     && (bframes == 0 || !h->param.rc.b_stat_read ))))
Laurent Aimar's avatar
Laurent Aimar committed
973
            {
974 975 976 977 978 979 980 981 982
                frm->i_type = X264_TYPE_IDR;
                if( bframes > 0 )
                {
                    bframes--;
                    h->frames.next[bframes]->i_type = X264_TYPE_P;
                }

                h->i_poc = 0;
                h->i_frame_num = 0;
Laurent Aimar's avatar
Laurent Aimar committed
983 984
            }

985 986
            if( bframes == h->param.i_bframe
                || h->frames.next[bframes+1] == NULL )
Laurent Aimar's avatar
Laurent Aimar committed
987
            {
988 989 990 991 992
                if( frm->i_type == X264_TYPE_B )
                    x264_log( h, X264_LOG_ERROR, "specified frame type is not compatible with max B-frames\n" );
                if(    frm->i_type == X264_TYPE_AUTO
                    || frm->i_type == X264_TYPE_B )
                    frm->i_type = X264_TYPE_P;
Laurent Aimar's avatar
Laurent Aimar committed
993
            }
994 995 996 997 998 999 1000 1001

            frm->i_poc = h->i_poc;
            h->i_poc += 2;

            if( frm->i_type != X264_TYPE_AUTO && frm->i_type != X264_TYPE_B )
                break;

            frm->i_type = X264_TYPE_B;
Laurent Aimar's avatar
Laurent Aimar committed
1002
        }
1003 1004 1005 1006 1007 1008

        /* 3: move some B-frames and 1 non-B to encode queue */
        x264_frame_put( h->frames.current, h->frames.next[bframes] );
        while( bframes-- )
            x264_frame_put( h->frames.current, x264_frame_get( h->frames.next ) );
        x264_frame_get( h->frames.next );
Laurent Aimar's avatar
Laurent Aimar committed
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
    }
    TIMER_STOP( i_mtime_encode_frame );

    /* ------------------- Get frame to be encoded ------------------------- */
    /* 4: get picture to encode */
    h->fenc = x264_frame_get( h->frames.current );
    if( h->fenc == NULL )
    {
        /* Nothing yet to encode (ex: waiting for I/P with B frames) */
        /* waiting for filling bframe buffer */
        pic->i_type = X264_TYPE_AUTO;
        return 0;
    }

1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039
do_encode:

    if( h->fenc->i_type == X264_TYPE_IDR )
    {
        h->frames.i_last_idr = 0;
        h->frames.i_last_i = 0;
    }
    else if( h->fenc->i_type == X264_TYPE_I )
    {
        h->frames.i_last_idr++;
        h->frames.i_last_i = 0;
    }
    else
    {
        h->frames.i_last_i++;
    }

Laurent Aimar's avatar
Laurent Aimar committed
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073
    /* ------------------- Setup frame context ----------------------------- */
    /* 5: Init data dependant of frame type */
    TIMER_START( i_mtime_encode_frame );
    if( h->fenc->i_type == X264_TYPE_IDR )
    {
        /* reset ref pictures */
        x264_reference_reset( h );

        i_nal_type    = NAL_SLICE_IDR;
        i_nal_ref_idc = NAL_PRIORITY_HIGHEST;
        i_slice_type = SLICE_TYPE_I;
    }
    else if( h->fenc->i_type == X264_TYPE_I )
    {
        i_nal_type    = NAL_SLICE;
        i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
        i_slice_type = SLICE_TYPE_I;
    }
    else if( h->fenc->i_type == X264_TYPE_P )
    {
        i_nal_type    = NAL_SLICE;
        i_nal_ref_idc = NAL_PRIORITY_HIGH; /* Not completely true but for now it is (as all I/P are kept as ref)*/
        i_slice_type = SLICE_TYPE_P;
    }
    else    /* B frame */
    {
        i_nal_type    = NAL_SLICE;
        i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
        i_slice_type = SLICE_TYPE_B;
    }

    pic->i_type     =
    h->fdec->i_type = h->fenc->i_type;
    h->fdec->i_poc  = h->fenc->i_poc;
Loren Merritt's avatar
Loren Merritt committed
1074
    h->fdec->i_frame = h->fenc->i_frame;
Laurent Aimar's avatar
Laurent Aimar committed
1075 1076 1077 1078 1079



    /* ------------------- Init                ----------------------------- */
    /* Init the rate control */
1080 1081
    x264_ratecontrol_start( h, i_slice_type );
    i_global_qp = x264_ratecontrol_qp( h );
Laurent Aimar's avatar
Laurent Aimar committed
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
    if( h->fenc->i_qpplus1 > 0 )
    {
        i_global_qp = x264_clip3( h->fenc->i_qpplus1 - 1, 0, 51 );
    }

    /* build ref list 0/1 */
    x264_reference_build_list( h, h->fdec->i_poc );

    /* increase frame num but only once for B frame */
    if( i_slice_type != SLICE_TYPE_B || h->sh.i_type != SLICE_TYPE_B )
    {
        h->i_frame_num++;
    }

    /* ------------------------ Create slice header  ----------------------- */
    x264_slice_init( h, i_nal_type, i_slice_type, i_global_qp );

    /* ---------------------- Write the bitstream -------------------------- */
    /* Init bitstream context */
    h->out.i_nal = 0;
    bs_init( &h->out.bs, h->out.p_bitstream, h->out.i_bitstream );

    /* Write SPS and PPS */
    if( i_nal_type == NAL_SLICE_IDR )
    {
        /* generate sequence parameters */
        x264_nal_start( h, NAL_SPS, NAL_PRIORITY_HIGHEST );
        x264_sps_write( &h->out.bs, h->sps );
        x264_nal_end( h );

        /* generate picture parameters */
        x264_nal_start( h, NAL_PPS, NAL_PRIORITY_HIGHEST );
        x264_pps_write( &h->out.bs, h->pps );
        x264_nal_end( h );
    }

    /* Write the slice */
1119
    x264_slice_write( h, i_nal_type, i_nal_ref_idc );
Laurent Aimar's avatar
Laurent Aimar committed
1120

1121
    /* XXX: this scene cut won't work with B frame (it may never create IDR -> bad) */
1122
    if( i_slice_type == SLICE_TYPE_P && !h->param.rc.b_stat_read 
1123
        && h->param.i_scenecut_threshold >= 0 )
1124
    {
1125 1126
        int i_bias;

1127
        int i_mb_i = h->stat.frame.i_mb_count[I_4x4] + h->stat.frame.i_mb_count[I_16x16];
1128 1129
        int i_mb_p = h->stat.frame.i_mb_count[P_L0] + h->stat.frame.i_mb_count[P_8x8];
        int i_mb_s = h->stat.frame.i_mb_count[P_SKIP];
1130
        int i_mb   = h->sps->i_mb_width * h->sps->i_mb_height;
1131 1132 1133 1134 1135 1136 1137 1138
        int64_t i_inter_cost = h->stat.frame.i_inter_cost;
        int64_t i_intra_cost = h->stat.frame.i_intra_cost;

        /* macroblock_analyse() doesn't further analyse skipped mbs,
         * so we have to guess their cost */
        if( i_mb_s < i_mb )
            i_intra_cost = i_intra_cost * i_mb / (i_mb - i_mb_s);

1139
        if( h->param.i_iframe > 0 )
1140
            i_bias = h->param.i_scenecut_threshold * h->frames.i_last_i / h->param.i_iframe;
1141 1142
        else
            i_bias = 15;
1143
        i_bias = X264_MIN( i_bias, 100 );
1144

1145
        /* Bad P will be reencoded as I */
1146
        if( i_mb_s < i_mb &&
1147 1148
            100 * i_inter_cost >= (100 - i_bias) * i_intra_cost )
            /* 100 * i_mb_i >= (100 - i_bias) * i_mb ) */
1149
            /*
1150 1151 1152 1153
            h->out.nal[h->out.i_nal-1].i_payload > h->i_last_intra_size +
            h->i_last_intra_size * (3+h->i_last_intra_qp - i_global_qp) / 16 &&
            i_mb_count[I_4x4] + i_mb_count[I_16x16] > i_mb_count[P_SKIP] + i_mb_count[P_L0]/2 &&
            h->out.nal[h->out.i_nal-1].i_payload > 2 * h->i_last_inter_size &&
1154
            h->frames.i_last_i > 4)*/
1155 1156
        {

1157
            x264_log( h, X264_LOG_DEBUG, "scene cut at %d size=%d last I:%d last P:%d Intra:%lld Inter:%lld Ratio:%lld Bias=%d (I:%d P:%d Skip:%d)\n",
1158
                      h->fenc->i_frame,
1159
                      h->out.nal[h->out.i_nal-1].i_payload,
1160
                      h->i_last_intra_size, h->i_last_inter_size,
1161 1162 1163
                      i_intra_cost, i_inter_cost,
                      100 * i_inter_cost / i_intra_cost,
                      i_bias, i_mb_i, i_mb_p, i_mb_s );
1164 1165 1166 1167

            /* Restore frame num */
            h->i_frame_num--;

1168 1169
            /* Do IDR if needed */
            if( h->frames.i_last_idr + 1 >= h->param.i_idrframe )
1170
            {
1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
                /* If using B-frames, make sure GOP is closed */
                for( i = 0; h->frames.current[i] && h->frames.current[i]->i_type == X264_TYPE_B; i++ );
                if( i > 0 )
                {
                    /* We don't know which frame is the scene cut, so we can't
                     * assign an I-frame yet. Instead, change the previous
                     * B-frame to P, and rearrange coding order. */
                    x264_frame_t *tmp = h->frames.current[i-1];
                    h->frames.current[i-1] = h->fenc;
                    h->fenc = tmp;
                    h->fenc->i_type = X264_TYPE_P;
                }
                else
                {
                    x264_frame_t *tmp;

                    /* Reset */
                    h->i_poc       = 0;
                    h->i_frame_num = 0;
1190

1191 1192 1193
                    /* Reinit field of fenc */
                    h->fenc->i_type = X264_TYPE_IDR;
                    h->fenc->i_poc = h->i_poc;
1194

1195 1196 1197 1198 1199 1200 1201 1202
                    /* Next Poc */
                    h->i_poc += 2;

                    /* Put enqueued frames back in the pool */
                    while( (tmp = x264_frame_get( h->frames.current ) ) != NULL )
                        x264_frame_put( h->frames.next, tmp );
                    x264_frame_sort( h->frames.next );
                }
1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217
            }
            else
            {
                h->fenc->i_type = X264_TYPE_I;
            }
            goto do_encode;
        }
        h->i_last_inter_size = h->out.nal[h->out.i_nal-1].i_payload;
    }
    else
    {
        h->i_last_intra_size = h->out.nal[h->out.i_nal-1].i_payload;
        h->i_last_intra_qp = i_global_qp;
    }

Laurent Aimar's avatar
Laurent Aimar committed
1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
    /* End bitstream, set output  */
    *pi_nal = h->out.i_nal;
    *pp_nal = &h->out.nal[0];

    /* Set output picture properties */
    if( i_slice_type == SLICE_TYPE_I )
        pic->i_type = i_nal_type == NAL_SLICE_IDR ? X264_TYPE_IDR : X264_TYPE_I;
    else if( i_slice_type == SLICE_TYPE_P )
        pic->i_type = X264_TYPE_P;
    else
        pic->i_type = X264_TYPE_B;
    pic->i_pts = h->fenc->i_pts;

    /* ---------------------- Update encoder state ------------------------- */
    /* update cabac */
    if( h->param.b_cabac )
    {
        x264_cabac_model_update( &h->cabac, i_slice_type, h->sh.pps->i_pic_init_qp + h->sh.i_qp_delta );
    }

    /* handle references */
    if( i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE )
    {
        x264_reference_update( h );
    }

    /* increase frame count */
    h->i_frame++;

    /* restore CPU state (before using float again) */
    x264_cpu_restore( h->param.cpu );

1250 1251 1252
    /* update rc */
    x264_ratecontrol_end( h, h->out.nal[h->out.i_nal-1].i_payload * 8 );

1253 1254
    x264_frame_put( h->frames.unused, h->fenc );

Laurent Aimar's avatar
Laurent Aimar committed
1255 1256 1257 1258 1259 1260
    TIMER_STOP( i_mtime_encode_frame );

    /* ---------------------- Compute/Print statistics --------------------- */
    /* Slice stat */
    h->stat.i_slice_count[i_slice_type]++;
    h->stat.i_slice_size[i_slice_type] += bs_pos( &h->out.bs) / 8;
Loren Merritt's avatar
Loren Merritt committed
1261
    h->stat.i_slice_qp[i_slice_type] += i_global_qp;
1262

Loren Merritt's avatar
Loren Merritt committed
1263
    for( i = 0; i < 18; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
1264
    {
1265
        h->stat.i_mb_count[h->sh.i_type][i] += h->stat.frame.i_mb_count[i];
Laurent Aimar's avatar
Laurent Aimar committed
1266 1267
    }

1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
    if( h->param.analyse.b_psnr )
    {
        int64_t i_sqe_y, i_sqe_u, i_sqe_v;

        /* PSNR */
        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 );
        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);
        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);

        h->stat.i_sqe_global[i_slice_type] += i_sqe_y + i_sqe_u + i_sqe_v;
        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 );
        h->stat.f_psnr_mean_y[i_slice_type] += x264_psnr( i_sqe_y, h->param.i_width * h->param.i_height );
        h->stat.f_psnr_mean_u[i_slice_type] += x264_psnr( i_sqe_u, h->param.i_width * h->param.i_height / 4 );
        h->stat.f_psnr_mean_v[i_slice_type] += x264_psnr( i_sqe_v, h->param.i_width * h->param.i_height / 4 );

Loren Merritt's avatar
Loren Merritt committed
1283
        snprintf( psz_message, 80, " PSNR Y:%2.2f U:%2.2f V:%2.2f",
1284
                  x264_psnr( i_sqe_y, h->param.i_width * h->param.i_height ),
1285 1286
                  x264_psnr( i_sqe_u, h->param.i_width * h->param.i_height / 4),
                  x264_psnr( i_sqe_v, h->param.i_width * h->param.i_height / 4) );
Loren Merritt's avatar
Loren Merritt committed
1287
        psz_message[79] = '\0';
1288 1289 1290
    }
    else
    {
Loren Merritt's avatar
Loren Merritt committed
1291
        psz_message[0] = '\0';
1292
    }
Loren Merritt's avatar
Loren Merritt committed
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306
    
    x264_log( h, X264_LOG_DEBUG,
                  "frame=%4d QP=%i NAL=%d Slice:%c Poc:%-3d I4x4:%-4d I16x16:%-4d P:%-4d SKIP:%-4d size=%d bytes%s\n",
              h->i_frame - 1,
              i_global_qp,
              i_nal_ref_idc,
              i_slice_type == SLICE_TYPE_I ? 'I' : (i_slice_type == SLICE_TYPE_P ? 'P' : 'B' ),
              frame_psnr->i_poc,
              h->stat.frame.i_mb_count[I_4x4],
              h->stat.frame.i_mb_count[I_16x16],
              h->stat.frame.i_mb_count_p,
              h->stat.frame.i_mb_count_skip,
              h->out.nal[h->out.i_nal-1].i_payload,
              psz_message );
1307 1308


Laurent Aimar's avatar
Laurent Aimar committed
1309
#ifdef DEBUG_MB_TYPE
Loren Merritt's avatar
Loren Merritt committed
1310 1311 1312 1313
{
    static const char mb_chars[] = { 'i', 'I', 'C', 'P', '8', 'S',
        'D', '<', 'X', 'B', 'X', '>', 'B', 'B', 'B', 'B', '8', 'S' };
    int mb_xy;
Laurent Aimar's avatar
Laurent Aimar committed
1314 1315
    for( mb_xy = 0; mb_xy < h->sps->i_mb_width * h->sps->i_mb_height; mb_xy++ )
    {
Loren Merritt's avatar
Loren Merritt committed
1316 1317
        if( h->mb.type[mb_xy] < 18 && h->mb.type[mb_xy] >= 0 )
            fprintf( stderr, "%c ", mb_chars[ h->mb.type[mb_xy] ] );
Laurent Aimar's avatar
Laurent Aimar committed
1318
        else
Loren Merritt's avatar
Loren Merritt committed
1319
            fprintf( stderr, "? " );
Laurent Aimar's avatar
Laurent Aimar committed
1320

Loren Merritt's avatar
Loren Merritt committed
1321 1322
        if( (mb_xy+1) % h->sps->i_mb_width == 0 )
            fprintf( stderr, "\n" );
Laurent Aimar's avatar
Laurent Aimar committed
1323
    }
Loren Merritt's avatar
Loren Merritt committed
1324
}
Laurent Aimar's avatar
Laurent Aimar committed
1325 1326
#endif

1327
#ifdef DEBUG_DUMP_FRAME
Laurent Aimar's avatar
Laurent Aimar committed
1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349
    /* Dump reconstructed frame */
    x264_frame_dump( h, frame_psnr, "fdec.yuv" );
#endif
#if 0
    if( h->i_ref0 > 0 )
    {
        x264_frame_dump( h, h->fref0[0], "ref0.yuv" );
    }
    if( h->i_ref1 > 0 )
    {
        x264_frame_dump( h, h->fref1[0], "ref1.yuv" );
    }
#endif
    return 0;
}

/****************************************************************************
 * x264_encoder_close:
 ****************************************************************************/
void    x264_encoder_close  ( x264_t *h )
{
    int64_t i_mtime_total = i_mtime_analyse + i_mtime_encode + i_mtime_write + i_mtime_filter + 1;
1350
    int64_t i_yuv_size = 3 * h->param.i_width * h->param.i_height / 2;
Laurent Aimar's avatar
Laurent Aimar committed
1351 1352
    int i;

1353 1354 1355 1356 1357 1358
    x264_log( h, X264_LOG_INFO,
              "analyse=%d(%lldms) encode=%d(%lldms) write=%d(%lldms) filter=%d(%lldms)\n",
              (int)(100*i_mtime_analyse/i_mtime_total), i_mtime_analyse/1000,
              (int)(100*i_mtime_encode/i_mtime_total), i_mtime_encode/1000,
              (int)(100*i_mtime_write/i_mtime_total), i_mtime_write/1000,
              (int)(100*i_mtime_filter/i_mtime_total), i_mtime_filter/1000 );
Laurent Aimar's avatar
Laurent Aimar committed
1359

Loren Merritt's avatar
Loren Merritt committed
1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395
    /* Slices used and PSNR */
    for( i=0; i<5; i++ )
    {
        static const int slice_order[] = { SLICE_TYPE_I, SLICE_TYPE_SI, SLICE_TYPE_P, SLICE_TYPE_SP, SLICE_TYPE_B };
        static const char *slice_name[] = { "P", "B", "I", "SP", "SI" };
        int i_slice = slice_order[i];

        if( h->stat.i_slice_count[i_slice] > 0 )
        {
            const int i_count = h->stat.i_slice_count[i_slice];
            if( h->param.analyse.b_psnr )
            {
                x264_log( h, X264_LOG_INFO,
                          "slice %s:%-4d Avg QP:%5.2f Avg size:%-5lld PSNR Mean Y:%5.2f U:%5.2f V:%5.2f Avg:%5.2f Global:%5.2f MSE*Size:%5.3f\n",
                          slice_name[i_slice],
                          i_count,
                          (float)h->stat.i_slice_qp[i_slice] / i_count,
                          h->stat.i_slice_size[i_slice] / i_count,
                          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,
                          h->stat.f_psnr_average[i_slice] / i_count,
                          x264_psnr( h->stat.i_sqe_global[i_slice], i_count * i_yuv_size ),
                          x264_mse( h->stat.i_sqe_global[i_slice], i_count * i_yuv_size ) * h->stat.i_slice_size[i_slice] / i_count );
            }
            else
            {
                x264_log( h, X264_LOG_INFO,
                          "slice %s:%-4d Avg QP:%5.2f Avg size:%-5lld\n",
                          slice_name[i_slice],
                          i_count,
                          (float)h->stat.i_slice_qp[i_slice] / i_count,
                          h->stat.i_slice_size[i_slice] / i_count );
            }
        }
    }

    /* MB types used */
Laurent Aimar's avatar
Laurent Aimar committed
1396 1397
    if( h->stat.i_slice_count[SLICE_TYPE_I] > 0 )
    {
Loren Merritt's avatar
Loren Merritt committed
1398
        const int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_I];
Laurent Aimar's avatar
Laurent Aimar committed
1399
        const int i_count = h->stat.i_slice_count[SLICE_TYPE_I];
1400
        x264_log( h, X264_LOG_INFO,
Loren Merritt's avatar
Loren Merritt committed
1401 1402 1403
                  "slice I      Avg I4x4:%-4lld I16x16:%-4lld\n",
                  i_mb_count[I_4x4]  / i_count,
                  i_mb_count[I_16x16]/ i_count );
Laurent Aimar's avatar
Laurent Aimar committed
1404 1405 1406
    }
    if( h->stat.i_slice_count[SLICE_TYPE_P] > 0 )
    {
Loren Merritt's avatar
Loren Merritt committed
1407
        const int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_P];
Laurent Aimar's avatar
Laurent Aimar committed
1408
        const int i_count = h->stat.i_slice_count[SLICE_TYPE_P];
1409
        x264_log( h, X264_LOG_INFO,
Loren Merritt's avatar
Loren Merritt committed
1410 1411 1412 1413 1414 1415
                  "slice P      Avg I4x4:%-4lld I16x16:%-4lld P:%-4lld P8x8:%-4lld PSKIP:%-4lld\n",
                  i_mb_count[I_4x4]  / i_count,
                  i_mb_count[I_16x16]/ i_count,
                  i_mb_count[P_L0]   / i_count,
                  i_mb_count[P_8x8]  / i_count,
                  i_mb_count[P_SKIP] / i_count );
Laurent Aimar's avatar
Laurent Aimar committed
1416 1417 1418
    }
    if( h->stat.i_slice_count[SLICE_TYPE_B] > 0 )
    {
Loren Merritt's avatar
Loren Merritt committed
1419
        const int64_t *i_mb_count = h->stat.i_mb_count[SLICE_TYPE_B];
1420
        const int i_count = h->stat.i_slice_count[SLICE_TYPE_B];
1421
        x264_log( h, X264_LOG_INFO,
Loren Merritt's avatar
Loren Merritt committed
1422 1423 1424 1425 1426 1427 1428 1429
                  "slice B      Avg I4x4:%-4lld I16x16:%-4lld P:%-4lld B:%-4lld B8x8:%-4lld DIRECT:%-4lld BSKIP:%-4lld\n",
                  i_mb_count[I_4x4]    / i_count,
                  i_mb_count[I_16x16]  / i_count,
                  (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,
                  (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,
                  i_mb_count[B_8x8]    / i_count,
                  i_mb_count[B_DIRECT] / i_count,
                  i_mb_count[B_SKIP]   / i_count );
Laurent Aimar's avatar
Laurent Aimar committed
1430 1431
    }

1432
    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 )
Laurent Aimar's avatar
Laurent Aimar committed
1433 1434 1435 1436
    {
        const int i_count = h->stat.i_slice_count[SLICE_TYPE_I] +
                            h->stat.i_slice_count[SLICE_TYPE_P] +
                            h->stat.i_slice_count[SLICE_TYPE_B];
1437
        float fps = (float) h->param.i_fps_num / h->param.i_fps_den;
Laurent Aimar's avatar
Laurent Aimar committed
1438

1439 1440 1441 1442 1443 1444
        if( h->param.analyse.b_psnr )
            x264_log( h, X264_LOG_INFO,
                      "PSNR Mean Y:%5.2f U:%5.2f V:%5.2f Avg:%5.2f Global:%5.2f kb/s:%.1f fps:%.3f\n",
                      (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,
                      (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,
                      (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,
1445

1446
                      (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,
1447

1448 1449 1450 1451 1452 1453 1454 1455 1456
                      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],
                                 i_count * i_yuv_size ),
                      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,
                      (double)1000000.0 * (double)i_count / (double)i_mtime_encode_frame );
        else
            x264_log( h, X264_LOG_INFO,
                      "kb/s:%.1f fps:%.3f\n",
                      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,
                      (double)1000000.0 * (double)i_count / (double)i_mtime_encode_frame );
Laurent Aimar's avatar
Laurent Aimar committed
1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471
    }

    /* frames */
    for( i = 0; i < X264_BFRAME_MAX + 1; i++ )
    {
        if( h->frames.current[i] ) x264_frame_delete( h->frames.current[i] );
        if( h->frames.next[i] )    x264_frame_delete( h->frames.next[i] );
        if( h->frames.unused[i] )  x264_frame_delete( h->frames.unused[i] );
    }
    /* ref frames */
    for( i = 0; i < h->param.i_frame_reference+2; i++ )
    {
        x264_frame_delete( h->frames.reference[i] );
    }

1472 1473 1474 1475 1476 1477 1478 1479
    /* param */
    if( h->param.rc.psz_stat_out )
        free( h->param.rc.psz_stat_out );
    if( h->param.rc.psz_stat_in )
        free( h->param.rc.psz_stat_in );
    if( h->param.rc.psz_rc_eq )
        free( h->param.rc.psz_rc_eq );

Laurent Aimar's avatar
Laurent Aimar committed
1480