encoder.c 59.2 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
/*****************************************************************************
 * 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>

29
#ifdef __WIN32__
30 31 32
#include <windows.h>
#define pthread_t               HANDLE
#define pthread_create(t,u,f,d) *(t)=CreateThread(NULL,0,f,d,0,NULL)
33 34
#define pthread_join(t,s)       { WaitForSingleObject(t,INFINITE); \
                                  CloseHandle(t); } 
35
#define HAVE_PTHREAD 1
36 37

#elif defined(SYS_BEOS)
38 39
#include <kernel/OS.h>
#define pthread_t               thread_id
40 41
#define pthread_create(t,u,f,d) { *(t)=spawn_thread(f,"",10,d); \
                                  resume_thread(*(t)); }
42
#define pthread_join(t,s)       wait_for_thread(t,(long*)s)
43 44 45
#define HAVE_PTHREAD 1

#elif HAVE_PTHREAD
Loren Merritt's avatar
Loren Merritt committed
46 47 48
#include <pthread.h>
#endif

49 50
#include "common/common.h"
#include "common/cpu.h"
Laurent Aimar's avatar
Laurent Aimar committed
51 52 53 54 55 56

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

Loren Merritt's avatar
Loren Merritt committed
57 58 59 60
#if VISUALIZE
#include "common/visualize.h"
#endif

Laurent Aimar's avatar
Laurent Aimar committed
61
//#define DEBUG_MB_TYPE
Loren Merritt's avatar
Loren Merritt committed
62
//#define DEBUG_DUMP_FRAME
63
//#define DEBUG_BENCHMARK
Laurent Aimar's avatar
Laurent Aimar committed
64

65
#ifdef DEBUG_BENCHMARK
Laurent Aimar's avatar
Laurent Aimar committed
66 67 68 69 70 71 72 73 74 75 76 77
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;\
    }
78 79 80 81
#else
#define TIMER_START( d )
#define TIMER_STOP( d )
#endif
Laurent Aimar's avatar
Laurent Aimar committed
82

83
#define NALU_OVERHEAD 5 // startcode + NAL type costs 5 bytes per frame
Laurent Aimar's avatar
Laurent Aimar committed
84 85 86 87 88 89

/****************************************************************************
 *
 ******************************* x264 libs **********************************
 *
 ****************************************************************************/
90
static int64_t x264_sqe( x264_t *h, 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
91 92 93 94
{
    int64_t i_sqe = 0;
    int x, y;

95 96 97 98 99 100 101 102 103 104 105 106 107
#define SSD(size) i_sqe += h->pixf.ssd[size]( pix1+y*i_pix_stride+x, i_pix_stride, \
                                              pix2+y*i_pix2_stride+x, i_pix2_stride );
    for( y = 0; y < i_height-15; y += 16 )
    {
        for( x = 0; x < i_width-15; x += 16 )
            SSD(PIXEL_16x16);
        if( x < i_width-7 )
            SSD(PIXEL_8x16);
    }
    if( y < i_height-7 )
        for( x = 0; x < i_width-7; x += 8 )
            SSD(PIXEL_8x8);
#undef SSD
108
    x264_cpu_restore( h->param.cpu );
Laurent Aimar's avatar
Laurent Aimar committed
109

110 111
    return i_sqe;
}
Laurent Aimar's avatar
Laurent Aimar committed
112

113 114 115 116 117 118 119 120 121 122
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
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 */
143
static void x264_slice_header_init( x264_t *h, x264_slice_header_t *sh,
Laurent Aimar's avatar
Laurent Aimar committed
144
                                    x264_sps_t *sps, x264_pps_t *pps,
145
                                    int i_type, int i_idr_pic_id, int i_frame, int i_qp )
Laurent Aimar's avatar
Laurent Aimar committed
146
{
147
    x264_param_t *param = &h->param;
148
    int i;
149

Laurent Aimar's avatar
Laurent Aimar committed
150 151 152 153 154 155
    /* First we fill all field */
    sh->sps = sps;
    sh->pps = pps;

    sh->i_type      = i_type;
    sh->i_first_mb  = 0;
Loren Merritt's avatar
Loren Merritt committed
156
    sh->i_last_mb   = h->sps->i_mb_width * h->sps->i_mb_height;
Laurent Aimar's avatar
Laurent Aimar committed
157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
    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;

174
    sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
Laurent Aimar's avatar
Laurent Aimar committed
175 176 177 178 179

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

180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198
    sh->b_ref_pic_list_reordering_l0 = h->b_ref_reorder[0];
    sh->b_ref_pic_list_reordering_l1 = h->b_ref_reorder[1];

    /* If the ref list isn't in the default order, construct reordering header */
    /* List1 reordering isn't needed yet */
    if( sh->b_ref_pic_list_reordering_l0 )
    {
        int pred_frame_num = i_frame;
        for( i = 0; i < h->i_ref0; i++ )
        {
            int diff = h->fref0[i]->i_frame_num - pred_frame_num;
            if( diff == 0 )
                x264_log( h, X264_LOG_ERROR, "diff frame num == 0\n" );
            sh->ref_pic_list_order[0][i].idc = ( diff > 0 );
            sh->ref_pic_list_order[0][i].arg = abs( diff ) - 1;
            pred_frame_num = h->fref0[i]->i_frame_num;
        }
    }

Laurent Aimar's avatar
Laurent Aimar committed
199 200
    sh->i_cabac_init_idc = param->i_cabac_init_idc;

201
    sh->i_qp_delta = i_qp - pps->i_pic_init_qp;
Laurent Aimar's avatar
Laurent Aimar committed
202 203 204
    sh->b_sp_for_swidth = 0;
    sh->i_qs_delta = 0;

205 206 207 208
    /* If effective qp <= 15, deblocking would have no effect anyway */
    if( param->b_deblocking_filter
        && ( h->mb.b_variable_qp
        || 15 < i_qp + X264_MAX(param->i_deblocking_filter_alphac0, param->i_deblocking_filter_beta) ) )
Laurent Aimar's avatar
Laurent Aimar committed
209 210 211 212 213 214 215 216 217 218 219 220 221
    {
        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 )
{
222 223
    int i;

Laurent Aimar's avatar
Laurent Aimar committed
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
    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 )
    {
276 277
        bs_write1( s, sh->b_ref_pic_list_reordering_l0 );
        if( sh->b_ref_pic_list_reordering_l0 )
Laurent Aimar's avatar
Laurent Aimar committed
278
        {
279 280 281 282 283 284 285
            for( i = 0; i < sh->i_num_ref_idx_l0_active; i++ )
            {
                bs_write_ue( s, sh->ref_pic_list_order[0][i].idc );
                bs_write_ue( s, sh->ref_pic_list_order[0][i].arg );
                        
            }
            bs_write_ue( s, 3 );
Laurent Aimar's avatar
Laurent Aimar committed
286 287 288 289
        }
    }
    if( sh->i_type == SLICE_TYPE_B )
    {
290 291
        bs_write1( s, sh->b_ref_pic_list_reordering_l1 );
        if( sh->b_ref_pic_list_reordering_l1 )
Laurent Aimar's avatar
Laurent Aimar committed
292
        {
293 294 295 296 297 298
            for( i = 0; i < sh->i_num_ref_idx_l1_active; i++ )
            {
                bs_write_ue( s, sh->ref_pic_list_order[1][i].idc );
                bs_write_ue( s, sh->ref_pic_list_order[1][i].arg );
            }
            bs_write_ue( s, 3 );
Laurent Aimar's avatar
Laurent Aimar committed
299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355
        }
    }

    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 */
        }
    }

    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*********************************
 ****************************************************************************
 *
 ****************************************************************************/

356
static int x264_validate_parameters( x264_t *h )
Laurent Aimar's avatar
Laurent Aimar committed
357
{
358
    if( h->param.i_width <= 0 || h->param.i_height <= 0 )
Laurent Aimar's avatar
Laurent Aimar committed
359
    {
360
        x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
361 362
                  h->param.i_width, h->param.i_height );
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
363 364
    }

365
    if( h->param.i_width % 16 != 0 || h->param.i_height % 16 != 0 )
Laurent Aimar's avatar
Laurent Aimar committed
366
    {
367
        x264_log( h, X264_LOG_ERROR, "width %% 16 != 0 or height %% 16 != 0 (%dx%d)\n",
368 369
                  h->param.i_width, h->param.i_height );
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
370
    }
371
    if( h->param.i_csp != X264_CSP_I420 )
Laurent Aimar's avatar
Laurent Aimar committed
372
    {
373
        x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420 supported)\n" );
374
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
375 376
    }

Loren Merritt's avatar
Loren Merritt committed
377 378 379 380 381 382 383 384 385 386
    h->param.i_threads = x264_clip3( h->param.i_threads, 1, X264_SLICE_MAX );
    h->param.i_threads = X264_MIN( h->param.i_threads, h->param.i_height / 16 );
#if !(HAVE_PTHREAD)
    if( h->param.i_threads > 1 )
    {
        x264_log( h, X264_LOG_WARNING, "not compiled with pthread support!\n");
        x264_log( h, X264_LOG_WARNING, "multislicing anyway, but you won't see any speed gain.\n" );
    }
#endif

Loren Merritt's avatar
Loren Merritt committed
387 388 389 390
    if( !h->param.rc.b_cbr && h->param.rc.i_qp_constant == 0 )
    {
        h->mb.b_lossless = 1;
        h->param.analyse.b_transform_8x8 = 0;
Loren Merritt's avatar
Loren Merritt committed
391
        h->param.i_cqm_preset = X264_CQM_FLAT;
Loren Merritt's avatar
Loren Merritt committed
392
        h->param.psz_cqm_file = NULL;
Loren Merritt's avatar
Loren Merritt committed
393 394 395 396 397
        h->param.rc.f_ip_factor = 1;
        h->param.rc.f_pb_factor = 1;
        h->param.analyse.b_psnr = 0;
    }

Loren Merritt's avatar
Loren Merritt committed
398
    h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, 16 );
399 400 401
    if( h->param.i_keyint_max <= 0 )
        h->param.i_keyint_max = 1;
    h->param.i_keyint_min = x264_clip3( h->param.i_keyint_min, 1, h->param.i_keyint_max/2+1 );
402

Loren Merritt's avatar
Loren Merritt committed
403
    h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_BFRAME_MAX );
404
    h->param.i_bframe_bias = x264_clip3( h->param.i_bframe_bias, -90, 100 );
405
    h->param.b_bframe_pyramid = h->param.b_bframe_pyramid && h->param.i_bframe > 1;
Laurent Aimar's avatar
Laurent Aimar committed
406 407 408 409 410

    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 );
Loren Merritt's avatar
Loren Merritt committed
411 412 413
    /* don't yet support merging of cabac stats */
    if( h->param.i_threads > 1 && h->param.i_cabac_init_idc == -1 )
        h->param.i_cabac_init_idc = 0;
Laurent Aimar's avatar
Laurent Aimar committed
414

Loren Merritt's avatar
Loren Merritt committed
415 416 417
    if( h->param.i_cqm_preset < X264_CQM_FLAT || h->param.i_cqm_preset > X264_CQM_CUSTOM )
        h->param.i_cqm_preset = X264_CQM_FLAT;

418 419
    if( h->param.analyse.i_me_method < X264_ME_DIA ||
        h->param.analyse.i_me_method > X264_ME_ESA )
420
        h->param.analyse.i_me_method = X264_ME_HEX;
421 422 423
    if( h->param.analyse.i_me_range < 4 )
        h->param.analyse.i_me_range = 4;
    if( h->param.analyse.i_me_range > 16 && h->param.analyse.i_me_method <= X264_ME_HEX )
424
        h->param.analyse.i_me_range = 16;
425
    h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 1, 6 );
426 427
    if( !(h->param.analyse.inter & X264_ANALYSE_PSUB16x16) )
        h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
428 429 430 431 432
    if( !h->param.analyse.b_transform_8x8 )
    {
        h->param.analyse.inter &= ~X264_ANALYSE_I8x8;
        h->param.analyse.intra &= ~X264_ANALYSE_I8x8;
    }
433
    h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
434
    h->param.analyse.i_mv_range = x264_clip3(h->param.analyse.i_mv_range, 32, 2048);
435

Loren Merritt's avatar
Loren Merritt committed
436 437 438 439
    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;
440
    h->param.rc.i_qp_constant = x264_clip3(h->param.rc.i_qp_constant, 0, 51);
Loren Merritt's avatar
Loren Merritt committed
441

442 443 444 445 446 447 448 449 450
    return 0;
}

/****************************************************************************
 * x264_encoder_open:
 ****************************************************************************/
x264_t *x264_encoder_open   ( x264_param_t *param )
{
    x264_t *h = x264_malloc( sizeof( x264_t ) );
451 452 453
    int i;

    memset( h, 0, sizeof( x264_t ) );
454 455 456 457 458 459 460 461 462 463

    /* Create a copy of param */
    memcpy( &h->param, param, sizeof( x264_param_t ) );

    if( x264_validate_parameters( h ) < 0 )
    {
        x264_free( h );
        return NULL;
    }

464 465 466 467 468 469 470
    if( h->param.psz_cqm_file )
        if( x264_cqm_parse_file( h, h->param.psz_cqm_file ) < 0 )
        {
            x264_free( h );
            return NULL;
        }

471 472 473 474 475 476 477
    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 );

478 479 480
    /* VUI */
    if( h->param.vui.i_sar_width > 0 && h->param.vui.i_sar_height > 0 )
    {
481 482 483
        int i_w = param->vui.i_sar_width;
        int i_h = param->vui.i_sar_height;
        int a = i_w, b = i_h;
484 485 486 487 488 489 490 491 492

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

            a = b;
            b = t % b;
        }

493 494 495
        i_w /= a;
        i_h /= a;
        while( i_w > 65535 || i_h > 65535 )
496
        {
497 498
            i_w /= 2;
            i_h /= 2;
499 500 501 502
        }

        h->param.vui.i_sar_width = 0;
        h->param.vui.i_sar_height = 0;
503
        if( i_w == 0 || i_h == 0 )
504 505 506
        {
            x264_log( h, X264_LOG_ERROR, "cannot create valid sample aspect ratio\n" );
        }
507
        else if( i_w == i_h )
508 509 510 511 512
        {
            x264_log( h, X264_LOG_INFO, "no need for a SAR\n" );
        }
        else
        {
513 514 515
            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;
516 517 518 519
        }
    }


Laurent Aimar's avatar
Laurent Aimar committed
520 521
    /* Init x264_t */
    h->out.i_nal = 0;
522 523 524
    h->out.i_bitstream = X264_MAX( 1000000, h->param.i_width * h->param.i_height * 1.7
        * ( h->param.rc.b_cbr ? pow( 0.5, h->param.rc.i_qp_min )
          : pow( 0.5, h->param.rc.i_qp_constant ) * X264_MAX( 1, h->param.rc.f_ip_factor )));
Laurent Aimar's avatar
Laurent Aimar committed
525 526 527 528 529 530 531 532 533 534 535
    h->out.p_bitstream = x264_malloc( h->out.i_bitstream );

    h->i_frame = 0;
    h->i_frame_num = 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);
Loren Merritt's avatar
Loren Merritt committed
536 537

    x264_cqm_init( h );
538 539
    
    h->mb.i_mb_count = h->sps->i_mb_width * h->sps->i_mb_height;
Laurent Aimar's avatar
Laurent Aimar committed
540 541

    /* Init frames. */
542 543 544 545 546
    h->frames.i_delay = h->param.i_bframe;
    h->frames.i_max_ref0 = h->param.i_frame_reference;
    h->frames.i_max_ref1 = h->sps->vui.i_num_reorder_frames;
    h->frames.i_max_dpb  = h->sps->vui.i_max_dec_frame_buffering + 1;

547
    for( i = 0; i < X264_BFRAME_MAX + 3; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
548 549 550 551 552
    {
        h->frames.current[i] = NULL;
        h->frames.next[i]    = NULL;
        h->frames.unused[i]  = NULL;
    }
553
    for( i = 0; i < 1 + h->frames.i_delay; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
554 555 556
    {
        h->frames.unused[i] =  x264_frame_new( h );
    }
557
    for( i = 0; i < h->frames.i_max_dpb; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
558 559 560
    {
        h->frames.reference[i] = x264_frame_new( h );
    }
561
    h->frames.reference[h->frames.i_max_dpb] = NULL;
562
    h->frames.i_last_idr = - h->param.i_keyint_max;
563
    h->frames.i_input    = 0;
564
    h->frames.last_nonb  = NULL;
Laurent Aimar's avatar
Laurent Aimar committed
565 566 567 568 569 570 571 572 573 574 575 576 577 578

    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 );
579
    x264_predict_8x8c_init( h->param.cpu, h->predict_8x8c );
Laurent Aimar's avatar
Laurent Aimar committed
580 581 582 583 584
    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 );
585
    x264_mc_init( h->param.cpu, &h->mc );
Laurent Aimar's avatar
Laurent Aimar committed
586
    x264_csp_init( h->param.cpu, h->param.i_csp, &h->csp );
587
    x264_quant_init( h, h->param.cpu, &h->quantf );
Laurent Aimar's avatar
Laurent Aimar committed
588

Loren Merritt's avatar
Loren Merritt committed
589 590 591 592
    memcpy( h->pixf.mbcmp,
            ( h->mb.b_lossless || h->param.analyse.i_subpel_refine <= 1 ) ? h->pixf.sad : h->pixf.satd,
            sizeof(h->pixf.mbcmp) );

Laurent Aimar's avatar
Laurent Aimar committed
593
    /* rate control */
594 595
    if( x264_ratecontrol_new( h ) < 0 )
        return NULL;
596

597 598 599 600 601 602 603 604
    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 " : "" );

Loren Merritt's avatar
Loren Merritt committed
605 606 607 608
    h->thread[0] = h;
    for( i = 1; i < param->i_threads; i++ )
        h->thread[i] = x264_malloc( sizeof(x264_t) );

Laurent Aimar's avatar
Laurent Aimar committed
609 610 611
    return h;
}

612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
/****************************************************************************
 * x264_encoder_reconfig:
 ****************************************************************************/
int x264_encoder_reconfig( x264_t *h, x264_param_t *param )
{
    h->param.i_bframe_bias = param->i_bframe_bias;
    h->param.i_deblocking_filter_alphac0 = param->i_deblocking_filter_alphac0;
    h->param.i_deblocking_filter_beta    = param->i_deblocking_filter_beta;
    h->param.analyse.i_me_method = param->analyse.i_me_method;
    h->param.analyse.i_me_range = param->analyse.i_me_range;
    h->param.analyse.i_subpel_refine = param->analyse.i_subpel_refine;
    h->param.analyse.intra = param->analyse.intra;
    h->param.analyse.inter = param->analyse.inter;
    if( h->sps->b_direct8x8_inference && h->param.i_bframe
        && h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_TEMPORAL )
        h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
Loren Merritt's avatar
Loren Merritt committed
628 629 630 631 632

    memcpy( h->pixf.mbcmp,
            ( h->mb.b_lossless || h->param.analyse.i_subpel_refine <= 1 ) ? h->pixf.sad : h->pixf.satd,
            sizeof(h->pixf.mbcmp) );

633 634 635
    return x264_validate_parameters( h );
}

Laurent Aimar's avatar
Laurent Aimar committed
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
/* 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 )
    {
672 673 674 675 676
        /* identify ourself */
        x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
        x264_sei_version_write( &h->out.bs );
        x264_nal_end( h );

Laurent Aimar's avatar
Laurent Aimar committed
677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697
        /* 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;
698
    while( list[i] ) i++;
Laurent Aimar's avatar
Laurent Aimar committed
699 700 701
    list[i] = frame;
}

702 703 704 705 706 707 708 709 710
static void x264_frame_push( x264_frame_t *list[X264_BFRAME_MAX], x264_frame_t *frame )
{
    int i = 0;
    while( list[i] ) i++;
    while( i-- )
        list[i+1] = list[i];
    list[0] = frame;
}

Laurent Aimar's avatar
Laurent Aimar committed
711 712 713 714
static x264_frame_t *x264_frame_get( x264_frame_t *list[X264_BFRAME_MAX+1] )
{
    x264_frame_t *frame = list[0];
    int i;
715
    for( i = 0; list[i]; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
716 717 718 719
        list[i] = list[i+1];
    return frame;
}

720
static void x264_frame_sort( x264_frame_t *list[X264_BFRAME_MAX+1], int b_dts )
721 722 723 724
{
    int i, b_ok;
    do {
        b_ok = 1;
725
        for( i = 0; list[i+1]; i++ )
726
        {
727 728 729 730 731
            int dtype = list[i]->i_type - list[i+1]->i_type;
            int dtime = list[i]->i_frame - list[i+1]->i_frame;
            int swap = b_dts ? dtype > 0 || ( dtype == 0 && dtime > 0 )
                             : dtime > 0;
            if( swap )
732 733 734 735 736 737 738 739 740
            {
                x264_frame_t *tmp = list[i+1];
                list[i+1] = list[i];
                list[i] = tmp;
                b_ok = 0;
            }
        }
    } while( !b_ok );
}
741 742
#define x264_frame_sort_dts(list) x264_frame_sort(list, 1)
#define x264_frame_sort_pts(list) x264_frame_sort(list, 0)
743

744
static inline void x264_reference_build_list( x264_t *h, int i_poc, int i_slice_type )
Laurent Aimar's avatar
Laurent Aimar committed
745 746 747 748 749 750 751
{
    int i;
    int b_ok;

    /* build ref list 0/1 */
    h->i_ref0 = 0;
    h->i_ref1 = 0;
752
    for( i = 1; i < h->frames.i_max_dpb; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
753 754 755 756 757 758 759 760 761 762 763 764 765
    {
        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];
            }
        }
    }
766

Laurent Aimar's avatar
Laurent Aimar committed
767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801
    /* 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 );

802 803 804 805 806
    /* In the standard, a P-frame's ref list is sorted by frame_num.
     * We use POC, but check whether explicit reordering is needed */
    h->b_ref_reorder[0] =
    h->b_ref_reorder[1] = 0;
    if( i_slice_type == SLICE_TYPE_P )
Laurent Aimar's avatar
Laurent Aimar committed
807
    {
808 809 810 811 812 813
        for( i = 0; i < h->i_ref0 - 1; i++ )
            if( h->fref0[i]->i_frame_num < h->fref0[i+1]->i_frame_num )
            {
                h->b_ref_reorder[0] = 1;
                break;
            }
Laurent Aimar's avatar
Laurent Aimar committed
814
    }
815 816

    h->i_ref1 = X264_MIN( h->i_ref1, h->frames.i_max_ref1 );
817 818
    h->i_ref0 = X264_MIN( h->i_ref0, h->frames.i_max_ref0 );
    h->i_ref0 = X264_MIN( h->i_ref0, 16 - h->i_ref1 );
Laurent Aimar's avatar
Laurent Aimar committed
819 820 821 822 823 824 825
}

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

    /* apply deblocking filter to the current decoded picture */
826
    if( !h->sh.i_disable_deblocking_filter_idc )
Laurent Aimar's avatar
Laurent Aimar committed
827 828 829 830 831 832 833 834
    {
        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 );

835 836 837 838 839 840
    /* create filtered images */
    x264_frame_filter( h->param.cpu, h->fdec );

    /* expand border of filtered images */
    x264_frame_expand_border_filtered( h->fdec );

841 842 843 844 845 846 847 848 849 850 851 852
    /* move lowres copy of the image to the ref frame */
    for( i = 0; i < 4; i++)
    {
        uint8_t *tmp = h->fdec->lowres[i];
        h->fdec->lowres[i] = h->fenc->lowres[i];
        h->fenc->lowres[i] = tmp;
    }

    /* adaptive B decision needs a pointer, since it can't use the ref lists */
    if( h->sh.i_type != SLICE_TYPE_B )
        h->frames.last_nonb = h->fdec;

Laurent Aimar's avatar
Laurent Aimar committed
853
    /* move frame in the buffer */
854 855
    h->fdec = h->frames.reference[h->frames.i_max_dpb-1];
    for( i = h->frames.i_max_dpb-1; i > 0; i-- )
Laurent Aimar's avatar
Laurent Aimar committed
856 857 858 859 860 861 862 863 864 865 866
    {
        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 */
867
    for( i = 1; i < h->frames.i_max_dpb; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
868 869 870 871 872 873 874 875 876 877 878
    {
        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 )
    {
879
        x264_slice_header_init( h, &h->sh, h->sps, h->pps, i_slice_type, h->i_idr_pic_id, h->i_frame_num - 1, i_global_qp );
Laurent Aimar's avatar
Laurent Aimar committed
880 881

        /* increment id */
882
        h->i_idr_pic_id = ( h->i_idr_pic_id + 1 ) % 65536;
Laurent Aimar's avatar
Laurent Aimar committed
883 884 885
    }
    else
    {
886
        x264_slice_header_init( h, &h->sh, h->sps, h->pps, i_slice_type, -1, h->i_frame_num - 1, i_global_qp );
Laurent Aimar's avatar
Laurent Aimar committed
887 888 889 890 891 892 893

        /* 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;
    }

894 895
    h->fdec->i_frame_num = h->sh.i_frame_num;

Laurent Aimar's avatar
Laurent Aimar committed
896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917
    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 ? */
    }

    /* 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 );
        }
    }
918 919

    x264_macroblock_slice_init( h );
Laurent Aimar's avatar
Laurent Aimar committed
920 921
}

Loren Merritt's avatar
Loren Merritt committed
922
static int x264_slice_write( x264_t *h )
Laurent Aimar's avatar
Laurent Aimar committed
923 924 925
{
    int i_skip;
    int mb_xy;
926
    int i;
Laurent Aimar's avatar
Laurent Aimar committed
927

928
    /* init stats */
Loren Merritt's avatar
Loren Merritt committed
929
    memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
Laurent Aimar's avatar
Laurent Aimar committed
930 931

    /* Slice */
Loren Merritt's avatar
Loren Merritt committed
932
    x264_nal_start( h, h->i_nal_type, h->i_nal_ref_idc );
Laurent Aimar's avatar
Laurent Aimar committed
933 934

    /* Slice header */
Loren Merritt's avatar
Loren Merritt committed
935
    x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
Laurent Aimar's avatar
Laurent Aimar committed
936 937
    if( h->param.b_cabac )
    {
938
        /* alignment needed */
Laurent Aimar's avatar
Laurent Aimar committed
939 940 941 942 943 944 945 946 947
        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;

Loren Merritt's avatar
Loren Merritt committed
948
    for( mb_xy = h->sh.i_first_mb, i_skip = 0; mb_xy < h->sh.i_last_mb; mb_xy++ )
Laurent Aimar's avatar
Laurent Aimar committed
949 950 951 952
    {
        const int i_mb_y = mb_xy / h->sps->i_mb_width;
        const int i_mb_x = mb_xy % h->sps->i_mb_width;

953 954
        int mb_spos = bs_pos(&h->out.bs);

Laurent Aimar's avatar
Laurent Aimar committed
955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971
        /* 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 );
Loren Merritt's avatar
Loren Merritt committed
972
        if( h->param.b_cabac )
Laurent Aimar's avatar
Laurent Aimar committed
973
        {
Loren Merritt's avatar
Loren Merritt committed
974 975
            if( mb_xy > h->sh.i_first_mb )
                x264_cabac_encode_terminal( &h->cabac, 0 );
Laurent Aimar's avatar
Laurent Aimar committed
976

Loren Merritt's avatar
Loren Merritt committed
977
            if( IS_SKIP( h->mb.i_type ) )
Laurent Aimar's avatar
Laurent Aimar committed
978 979 980 981 982
                x264_cabac_mb_skip( h, 1 );
            else
            {
                if( h->sh.i_type != SLICE_TYPE_I )
                    x264_cabac_mb_skip( h, 0 );
983
                x264_macroblock_write_cabac( h, &h->cabac );
Laurent Aimar's avatar
Laurent Aimar committed
984
            }
Loren Merritt's avatar
Loren Merritt committed
985 986 987 988 989
        }
        else
        {
            if( IS_SKIP( h->mb.i_type ) )
                i_skip++;
Laurent Aimar's avatar
Laurent Aimar committed
990 991 992 993 994 995 996 997 998 999 1000 1001
            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 );

Loren Merritt's avatar
Loren Merritt committed
1002 1003 1004 1005 1006
#if VISUALIZE
        if( h->param.b_visualize )
            x264_visualize_mb( h );
#endif

Laurent Aimar's avatar
Laurent Aimar committed
1007 1008 1009
        /* save cache */
        x264_macroblock_cache_save( h );

1010
        /* accumulate mb stats */
1011
        h->stat.frame.i_mb_count[h->mb.i_type]++;
1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
        if( !IS_SKIP(h->mb.i_type) && !IS_INTRA(h->mb.i_type) && !IS_DIRECT(h->mb.i_type) )
        {
            if( h->mb.i_partition != D_8x8 )
                h->stat.frame.i_mb_count_size[ x264_mb_partition_pixel_table[ h->mb.i_partition ] ] += 4;
            else
                for( i = 0; i < 4; i++ )
                    h->stat.frame.i_mb_count_size[ x264_mb_partition_pixel_table[ h->mb.i_sub_partition[i] ] ] ++;
            if( h->param.i_frame_reference > 1 )
            {
                for( i = 0; i < 4; i++ )
                {
                    int i_ref = h->mb.cache.ref[0][ x264_scan8[4*i] ];
                    if( i_ref >= 0 )
                        h->stat.frame.i_mb_count_ref[i_ref] ++;
                }
            }
        }
1029 1030 1031 1032 1033
        if( h->mb.i_cbp_luma && !IS_INTRA(h->mb.i_type) )
        {
            h->stat.frame.i_mb_count_8x8dct[0] ++;
            h->stat.frame.i_mb_count_8x8dct[1] += h->mb.b_transform_8x8;
        }
1034

1035 1036
        if( h->mb.b_variable_qp )
            x264_ratecontrol_mb(h, bs_pos(&h->out.bs) - mb_spos);
Laurent Aimar's avatar
Laurent Aimar committed
1037 1038 1039 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
    }

    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 );
1069 1070 1071

    /* Compute misc bits */
    h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
1072
                              + NALU_OVERHEAD * 8
1073 1074 1075
                              - h->stat.frame.i_itex_bits
                              - h->stat.frame.i_ptex_bits
                              - h->stat.frame.i_hdr_bits;
Loren Merritt's avatar
Loren Merritt committed
1076 1077 1078 1079 1080 1081

    return 0;
}

static inline int x264_slices_write( x264_t *h )
{
1082 1083 1084 1085 1086 1087 1088
    int i_frame_size;

#if VISUALIZE
    if( h->param.b_visualize )
        x264_visualize_init( h );
#endif

Loren Merritt's avatar
Loren Merritt committed
1089 1090 1091
    if( h->param.i_threads == 1 )
    {
        x264_slice_write( h );
1092
        i_frame_size = h->out.nal[h->out.i_nal-1].i_payload;
Loren Merritt's avatar
Loren Merritt committed
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 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
    }
    else
    {
        int i_nal = h->out.i_nal;
        int i_bs_size = h->out.i_bitstream / h->param.i_threads;
        int i;
        /* duplicate contexts */
        for( i = 0; i < h->param.i_threads; i++ )
        {
            x264_t *t = h->thread[i];
            if( i > 0 )
            {
                memcpy( t, h, sizeof(x264_t) );
                t->out.p_bitstream += i*i_bs_size;
                bs_init( &t->out.bs, t->out.p_bitstream, i_bs_size );
            }
            t->sh.i_first_mb = (i    * h->sps->i_mb_height / h->param.i_threads) * h->sps->i_mb_width;
            t->sh.i_last_mb = ((i+1) * h->sps->i_mb_height / h->param.i_threads) * h->sps->i_mb_width;
            t->out.i_nal = i_nal + i;
        }

        /* dispatch */
#if HAVE_PTHREAD
        {
            pthread_t handles[X264_SLICE_MAX];
            void *status;
            for( i = 0; i < h->param.i_threads; i++ )
                pthread_create( &handles[i], NULL, (void*)x264_slice_write, (void*)h->thread[i] );
            for( i = 0; i < h->param.i_threads; i++ )
                pthread_join( handles[i], &status );
        }
#else
        for( i = 0; i < h->param.i_threads; i++ )
            x264_slice_write( h->thread[i] );
#endif

        /* merge contexts */
        i_frame_size = h->out.nal[i_nal].i_payload;
        for( i = 1; i < h->param.i_threads; i++ )
        {
            int j;
            x264_t *t = h->thread[i];
            h->out.nal[i_nal+i] = t->out.nal[i_nal+i];
            i_frame_size += t->out.nal[i_nal+i].i_payload;
            // all entries in stat.frame are ints
            for( j = 0; j < sizeof(h->stat.frame) / sizeof(int); j++ )
                ((int*)&h->stat.frame)[j] += ((int*)&t->stat.frame)[j];
        }
        h->out.i_nal = i_nal + h->param.i_threads;
    }
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152

#if VISUALIZE
    if( h->param.b_visualize )
    {
        x264_visualize_show( h );
        x264_visualize_close( h );
    }
#endif

    return i_frame_size;
Laurent Aimar's avatar
Laurent Aimar committed
1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169
}

/****************************************************************************
 * 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,
1170 1171
                             x264_picture_t *pic_in,
                             x264_picture_t *pic_out )
Laurent Aimar's avatar
Laurent Aimar committed
1172
{
1173
    x264_frame_t   *frame_psnr = h->fdec; /* just to keep the current decoded frame for psnr calculation */
Laurent Aimar's avatar
Laurent Aimar committed
1174 1175 1176
    int     i_nal_type;
    int     i_nal_ref_idc;
    int     i_slice_type;
Loren Merritt's avatar
Loren Merritt committed
1177
    int     i_frame_size;
Laurent Aimar's avatar
Laurent Aimar committed
1178 1179 1180 1181 1182

    int i;

    int   i_global_qp;

Loren Merritt's avatar
Loren Merritt committed
1183 1184
    char psz_message[80];

Laurent Aimar's avatar
Laurent Aimar committed
1185 1186 1187 1188 1189 1190 1191
    /* no data out */
    *pi_nal = 0;
    *pp_nal = NULL;


    /* ------------------- Setup new frame from picture -------------------- */
    TIMER_START( i_mtime_encode_frame );
1192
    if( pic_in != NULL )
Laurent Aimar's avatar
Laurent Aimar committed
1193
    {
1194
        /* 1: Copy the picture to a frame and move it to a buffer */
Laurent Aimar's avatar
Laurent Aimar committed
1195 1196
        x264_frame_t *fenc = x264_frame_get( h->frames.unused );

1197
        x264_frame_copy_picture( h, fenc, pic_in );
Laurent Aimar's avatar
Laurent Aimar committed
1198

1199 1200
        fenc->i_frame = h->frames.i_input++;

1201 1202
        x264_frame_put( h->frames.next, fenc );

1203 1204 1205
        x264_frame_init_lowres( h->param.cpu, fenc );

        if( h->frames.i_input <= h->frames.i_delay )
1206
        {
1207 1208
            /* Nothing yet to encode */
            /* waiting for filling bframe buffer */
1209
            pic_out->i_type = X264_TYPE_AUTO;
1210
            return 0;
1211
        }
1212
    }
Laurent Aimar's avatar
Laurent Aimar committed
1213

1214 1215
    if( h->frames.current[0] == NULL )
    {
1216
        int bframes = 0;
1217 1218 1219
        /* 2: Select frame types */
        if( h->frames.next[0] == NULL )
            return 0;
Laurent Aimar's avatar
Laurent Aimar committed
1220

1221
        x264_slicetype_decide( h );
1222 1223

        /* 3: move some B-frames and 1 non-B to encode queue */
1224
        while( IS_X264_TYPE_B( h->frames.next[bframes]->i_type ) )
1225
            bframes++;
1226 1227 1228 1229 1230 1231 1232 1233 1234
        x264_frame_put( h->frames.current, x264_frame_get( &h->frames.next[bframes] ) );
        /* FIXME: when max B-frames > 3, BREF may no longer be centered after GOP closing */
        if( h->param.b_bframe_pyramid && bframes > 1 )
        {
            x264_frame_t *mid = x264_frame_get( &h->frames.next[bframes/2] );
            mid->i_type = X264_TYPE_BREF;
            x264_frame_put( h->frames.current, mid );
            bframes--;
        }
1235 1236
        while( bframes-- )
            x264_frame_put( h->frames.current, x264_frame_get( h->frames.next ) );
Laurent Aimar's avatar
Laurent Aimar committed
1237 1238 1239 1240 1241 1242 1243 1244 1245 1246
    }
    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 */
1247
        pic_out->i_type = X264_TYPE_AUTO;
Laurent Aimar's avatar
Laurent Aimar committed
1248 1249 1250
        return 0;
    }

1251 1252 1253 1254
do_encode:

    if( h->fenc->i_type == X264_TYPE_IDR )
    {
1255
        h->frames.i_last_idr = h->fenc->i_frame;
1256 1257
    }

Laurent Aimar's avatar
Laurent Aimar committed
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281
    /* ------------------- 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;
    }
1282 1283 1284 1285 1286 1287
    else if( h->fenc->i_type == X264_TYPE_BREF )
    {
        i_nal_type    = NAL_SLICE;
        i_nal_ref_idc = NAL_PRIORITY_HIGH; /* maybe add MMCO to forget it? -> low */
        i_slice_type = SLICE_TYPE_B;
    }
Laurent Aimar's avatar
Laurent Aimar committed
1288