encoder.c 59 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
91
92
93
94
95
96
97
98
99
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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
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 */
120
static void x264_slice_header_init( x264_t *h, x264_slice_header_t *sh,
Laurent Aimar's avatar
Laurent Aimar committed
121
                                    x264_sps_t *sps, x264_pps_t *pps,
122
                                    int i_type, int i_idr_pic_id, int i_frame, int i_qp )
Laurent Aimar's avatar
Laurent Aimar committed
123
{
124
    x264_param_t *param = &h->param;
125
    int i;
126

Laurent Aimar's avatar
Laurent Aimar committed
127
128
129
130
131
132
    /* 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
133
    sh->i_last_mb   = h->sps->i_mb_width * h->sps->i_mb_height;
Laurent Aimar's avatar
Laurent Aimar committed
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
    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;

151
    sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
Laurent Aimar's avatar
Laurent Aimar committed
152
153
154
155
156

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

157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
    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
176
177
    sh->i_cabac_init_idc = param->i_cabac_init_idc;

178
    sh->i_qp = i_qp;
179
    sh->i_qp_delta = i_qp - pps->i_pic_init_qp;
Laurent Aimar's avatar
Laurent Aimar committed
180
181
182
    sh->b_sp_for_swidth = 0;
    sh->i_qs_delta = 0;

183
184
185
186
    /* 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
187
188
189
190
191
192
193
194
195
196
197
198
199
    {
        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 )
{
200
201
    int i;

Laurent Aimar's avatar
Laurent Aimar committed
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
    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 )
    {
254
255
        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
256
        {
257
258
259
260
261
262
263
            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
264
265
266
267
        }
    }
    if( sh->i_type == SLICE_TYPE_B )
    {
268
269
        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
270
        {
271
272
273
274
275
276
            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
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
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
        }
    }

    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( 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*********************************
 ****************************************************************************
 *
 ****************************************************************************/

324
static int x264_validate_parameters( x264_t *h )
Laurent Aimar's avatar
Laurent Aimar committed
325
{
326
    if( h->param.i_width <= 0 || h->param.i_height <= 0 )
Laurent Aimar's avatar
Laurent Aimar committed
327
    {
328
        x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
329
330
                  h->param.i_width, h->param.i_height );
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
331
332
    }

Loren Merritt's avatar
Loren Merritt committed
333
    if( h->param.i_width % 2 || h->param.i_height % 2 )
Laurent Aimar's avatar
Laurent Aimar committed
334
    {
Loren Merritt's avatar
Loren Merritt committed
335
        x264_log( h, X264_LOG_ERROR, "width or height not divisible by 2 (%dx%d)\n",
336
337
                  h->param.i_width, h->param.i_height );
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
338
    }
339
    if( h->param.i_csp != X264_CSP_I420 )
Laurent Aimar's avatar
Laurent Aimar committed
340
    {
341
        x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420 supported)\n" );
342
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
343
344
    }

Loren Merritt's avatar
Loren Merritt committed
345
    h->param.i_threads = x264_clip3( h->param.i_threads, 1, X264_SLICE_MAX );
Loren Merritt's avatar
Loren Merritt committed
346
    h->param.i_threads = X264_MIN( h->param.i_threads, (h->param.i_height + 15) / 16 );
Loren Merritt's avatar
Loren Merritt committed
347
348
349
350
351
352
353
354
#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

355
356
357
358
    if( h->param.rc.i_rf_constant > 0 )
        h->param.rc.i_qp_constant = h->param.rc.i_rf_constant;
    h->param.rc.i_rf_constant = x264_clip3( h->param.rc.i_rf_constant, 0, 51 );
    h->param.rc.i_qp_constant = x264_clip3( h->param.rc.i_qp_constant, 0, 51 );
Loren Merritt's avatar
Loren Merritt committed
359
360
361
362
    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
363
        h->param.i_cqm_preset = X264_CQM_FLAT;
Loren Merritt's avatar
Loren Merritt committed
364
        h->param.psz_cqm_file = NULL;
Loren Merritt's avatar
Loren Merritt committed
365
366
367
        h->param.rc.f_ip_factor = 1;
        h->param.rc.f_pb_factor = 1;
        h->param.analyse.b_psnr = 0;
368
        h->param.analyse.i_chroma_qp_offset = 0;
369
        h->param.analyse.i_trellis = 0;
Loren Merritt's avatar
Loren Merritt committed
370
371
    }

Loren Merritt's avatar
Loren Merritt committed
372
373
374
375
376
377
378
    if( ( h->param.i_width % 16 || h->param.i_height % 16 ) && !h->mb.b_lossless )
    {
        x264_log( h, X264_LOG_WARNING, 
                  "width or height not divisible by 16 (%dx%d), compression will suffer.\n",
                  h->param.i_width, h->param.i_height );
    }

Loren Merritt's avatar
Loren Merritt committed
379
    h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, 16 );
380
381
382
    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 );
383

Loren Merritt's avatar
Loren Merritt committed
384
    h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_BFRAME_MAX );
385
    h->param.i_bframe_bias = x264_clip3( h->param.i_bframe_bias, -90, 100 );
386
    h->param.b_bframe_pyramid = h->param.b_bframe_pyramid && h->param.i_bframe > 1;
387
    h->param.b_bframe_adaptive = h->param.b_bframe_adaptive && h->param.i_bframe > 0;
Laurent Aimar's avatar
Laurent Aimar committed
388
389
390
391

    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 );

392
    h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, 0, 2 );
Laurent Aimar's avatar
Laurent Aimar committed
393

Loren Merritt's avatar
Loren Merritt committed
394
395
396
    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;

397
398
    if( h->param.analyse.i_me_method < X264_ME_DIA ||
        h->param.analyse.i_me_method > X264_ME_ESA )
399
        h->param.analyse.i_me_method = X264_ME_HEX;
400
401
402
    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 )
403
        h->param.analyse.i_me_range = 16;
404
    h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 1, 6 );
405
406
407
408
409
    h->param.analyse.b_bframe_rdo = h->param.analyse.b_bframe_rdo && h->param.analyse.i_subpel_refine >= 6;
    h->param.analyse.b_mixed_references = h->param.analyse.b_mixed_references && h->param.i_frame_reference > 1;
    h->param.analyse.inter &= X264_ANALYSE_PSUB16x16|X264_ANALYSE_PSUB8x8|X264_ANALYSE_BSUB16x16|
                              X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
    h->param.analyse.intra &= X264_ANALYSE_I4x4|X264_ANALYSE_I8x8;
410
411
    if( !(h->param.analyse.inter & X264_ANALYSE_PSUB16x16) )
        h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
412
413
414
415
416
    if( !h->param.analyse.b_transform_8x8 )
    {
        h->param.analyse.inter &= ~X264_ANALYSE_I8x8;
        h->param.analyse.intra &= ~X264_ANALYSE_I8x8;
    }
417
    h->param.analyse.i_chroma_qp_offset = x264_clip3(h->param.analyse.i_chroma_qp_offset, -12, 12);
Loren Merritt's avatar
Loren Merritt committed
418
419
    if( !h->param.b_cabac )
        h->param.analyse.i_trellis = 0;
420

421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
    {
        const x264_level_t *l = x264_levels;
        while( l->level_idc != 0 && l->level_idc != h->param.i_level_idc )
            l++;
        if( l->level_idc == 0 )
        {
            x264_log( h, X264_LOG_ERROR, "invalid level_idc: %d\n", h->param.i_level_idc );
            return -1;
        }
        if( h->param.analyse.i_mv_range <= 0 )
            h->param.analyse.i_mv_range = l->mv_range;
        else
            h->param.analyse.i_mv_range = x264_clip3(h->param.analyse.i_mv_range, 32, 2048);
    }

Loren Merritt's avatar
Loren Merritt committed
436
437
438
439
440
    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;

441
442
443
444
445
446
447
448
449
    return 0;
}

/****************************************************************************
 * x264_encoder_open:
 ****************************************************************************/
x264_t *x264_encoder_open   ( x264_param_t *param )
{
    x264_t *h = x264_malloc( sizeof( x264_t ) );
450
451
452
    int i;

    memset( h, 0, sizeof( x264_t ) );
453
454
455
456
457
458
459
460
461
462

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

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

463
464
465
466
467
468
469
    if( h->param.psz_cqm_file )
        if( x264_cqm_parse_file( h, h->param.psz_cqm_file ) < 0 )
        {
            x264_free( h );
            return NULL;
        }

470
471
472
473
474
475
476
    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 );

477
478
479
    /* VUI */
    if( h->param.vui.i_sar_width > 0 && h->param.vui.i_sar_height > 0 )
    {
480
481
482
        int i_w = param->vui.i_sar_width;
        int i_h = param->vui.i_sar_height;
        int a = i_w, b = i_h;
483
484
485
486
487
488
489
490
491

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

            a = b;
            b = t % b;
        }

492
493
494
        i_w /= a;
        i_h /= a;
        while( i_w > 65535 || i_h > 65535 )
495
        {
496
497
            i_w /= 2;
            i_h /= 2;
498
499
500
501
        }

        h->param.vui.i_sar_width = 0;
        h->param.vui.i_sar_height = 0;
502
        if( i_w == 0 || i_h == 0 )
503
504
505
        {
            x264_log( h, X264_LOG_ERROR, "cannot create valid sample aspect ratio\n" );
        }
506
        else if( i_w == i_h )
507
508
509
510
511
        {
            x264_log( h, X264_LOG_INFO, "no need for a SAR\n" );
        }
        else
        {
512
513
514
            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;
515
516
517
518
        }
    }


Laurent Aimar's avatar
Laurent Aimar committed
519
520
    /* Init x264_t */
    h->out.i_nal = 0;
521
522
523
    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
524
525
526
527
528
529
530
531
532
533
534
    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
535

536
537
    x264_validate_levels( h );

Loren Merritt's avatar
Loren Merritt committed
538
    x264_cqm_init( h );
539
540
    
    h->mb.i_mb_count = h->sps->i_mb_width * h->sps->i_mb_height;
Laurent Aimar's avatar
Laurent Aimar committed
541
542

    /* Init frames. */
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
    h->frames.b_have_lowres = !h->param.rc.b_stat_read
548
        && ( h->param.rc.b_cbr || h->param.rc.i_rf_constant || h->param.b_bframe_adaptive );
549

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

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

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

    x264_macroblock_cache_init( h );
Loren Merritt's avatar
Loren Merritt committed
575
    x264_rdo_init( );
Laurent Aimar's avatar
Laurent Aimar committed
576
577
578

    /* 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 );
Loren Merritt's avatar
Loren Merritt committed
588
    x264_deblock_init( h->param.cpu, &h->loopf );
Laurent Aimar's avatar
Laurent Aimar committed
589

Loren Merritt's avatar
Loren Merritt committed
590
591
592
593
    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
594
    /* rate control */
595
596
    if( x264_ratecontrol_new( h ) < 0 )
        return NULL;
597

598
599
600
601
602
603
604
605
    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
606
607
608
609
    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
610
611
612
    return h;
}

613
614
615
616
617
618
619
620
621
622
623
/****************************************************************************
 * 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;
Loren Merritt's avatar
Loren Merritt committed
624
    h->param.analyse.i_trellis = param->analyse.i_trellis;
625
626
627
628
629
    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
630
631
632
633
634

    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) );

635
636
637
    return x264_validate_parameters( h );
}

Laurent Aimar's avatar
Laurent Aimar committed
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
/* 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 )
    {
674
675
        /* identify ourself */
        x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
676
        x264_sei_version_write( h, &h->out.bs );
677
678
        x264_nal_end( h );

Laurent Aimar's avatar
Laurent Aimar committed
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
        /* 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;
700
    while( list[i] ) i++;
Laurent Aimar's avatar
Laurent Aimar committed
701
702
703
    list[i] = frame;
}

704
705
706
707
708
709
710
711
712
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
713
714
715
716
static x264_frame_t *x264_frame_get( x264_frame_t *list[X264_BFRAME_MAX+1] )
{
    x264_frame_t *frame = list[0];
    int i;
717
    for( i = 0; list[i]; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
718
719
720
721
        list[i] = list[i+1];
    return frame;
}

722
static void x264_frame_sort( x264_frame_t *list[X264_BFRAME_MAX+1], int b_dts )
723
724
725
726
{
    int i, b_ok;
    do {
        b_ok = 1;
727
        for( i = 0; list[i+1]; i++ )
728
        {
729
730
731
732
733
            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 )
734
            {
Loren Merritt's avatar
Loren Merritt committed
735
                XCHG( x264_frame_t*, list[i], list[i+1] );
736
737
738
739
740
                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
    /* 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 )
            {
Loren Merritt's avatar
Loren Merritt committed
775
                XCHG( x264_frame_t*, h->fref0[i], h->fref0[i+1] );
Laurent Aimar's avatar
Laurent Aimar committed
776
777
778
779
780
781
782
783
784
785
786
787
788
                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 )
            {
Loren Merritt's avatar
Loren Merritt committed
789
                XCHG( x264_frame_t*, h->fref1[i], h->fref1[i+1] );
Laurent Aimar's avatar
Laurent Aimar committed
790
791
792
793
794
795
                b_ok = 0;
                break;
            }
        }
    } while( !b_ok );

796
797
798
799
800
    /* 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
801
    {
802
803
804
805
806
807
        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
808
    }
809
810

    h->i_ref1 = X264_MIN( h->i_ref1, h->frames.i_max_ref1 );
811
812
    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
813
814
815
816
817
818
819
}

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

    /* apply deblocking filter to the current decoded picture */
820
    if( !h->sh.i_disable_deblocking_filter_idc )
Laurent Aimar's avatar
Laurent Aimar committed
821
822
823
824
825
826
827
828
    {
        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 );

829
830
831
832
833
834
    /* create filtered images */
    x264_frame_filter( h->param.cpu, h->fdec );

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

835
836
    /* move lowres copy of the image to the ref frame */
    for( i = 0; i < 4; i++)
Loren Merritt's avatar
Loren Merritt committed
837
        XCHG( uint8_t*, h->fdec->lowres[i], h->fenc->lowres[i] );
838
839
840
841
842

    /* 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
843
    /* move frame in the buffer */
844
845
    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
846
847
848
849
850
851
852
853
854
855
856
    {
        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 */
857
    for( i = 1; i < h->frames.i_max_dpb; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
858
859
860
861
862
863
864
865
866
867
868
    {
        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 )
    {
869
        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
870
871

        /* increment id */
872
        h->i_idr_pic_id = ( h->i_idr_pic_id + 1 ) % 65536;
Laurent Aimar's avatar
Laurent Aimar committed
873
874
875
    }
    else
    {
876
        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
877
878
879
880
881
882
883

        /* 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;
    }

884
885
    h->fdec->i_frame_num = h->sh.i_frame_num;

Laurent Aimar's avatar
Laurent Aimar committed
886
887
888
889
890
891
892
893
894
895
896
897
898
899
    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 ? */
    }

900
    x264_macroblock_slice_init( h );
Laurent Aimar's avatar
Laurent Aimar committed
901
902
}

Loren Merritt's avatar
Loren Merritt committed
903
static int x264_slice_write( x264_t *h )
Laurent Aimar's avatar
Laurent Aimar committed
904
905
906
{
    int i_skip;
    int mb_xy;
907
    int i;
Laurent Aimar's avatar
Laurent Aimar committed
908

909
    /* init stats */
Loren Merritt's avatar
Loren Merritt committed
910
    memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
Laurent Aimar's avatar
Laurent Aimar committed
911
912

    /* Slice */
Loren Merritt's avatar
Loren Merritt committed
913
    x264_nal_start( h, h->i_nal_type, h->i_nal_ref_idc );
Laurent Aimar's avatar
Laurent Aimar committed
914
915

    /* Slice header */
Loren Merritt's avatar
Loren Merritt committed
916
    x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
Laurent Aimar's avatar
Laurent Aimar committed
917
918
    if( h->param.b_cabac )
    {
919
        /* alignment needed */
Laurent Aimar's avatar
Laurent Aimar committed
920
921
922
        bs_align_1( &h->out.bs );

        /* init cabac */
923
        x264_cabac_context_init( &h->cabac, h->sh.i_type, h->sh.i_qp, h->sh.i_cabac_init_idc );
Laurent Aimar's avatar
Laurent Aimar committed
924
925
        x264_cabac_encode_init ( &h->cabac, &h->out.bs );
    }
926
    h->mb.i_last_qp = h->sh.i_qp;
Laurent Aimar's avatar
Laurent Aimar committed
927
928
    h->mb.i_last_dqp = 0;

Loren Merritt's avatar
Loren Merritt committed
929
    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
930
931
932
933
    {
        const int i_mb_y = mb_xy / h->sps->i_mb_width;
        const int i_mb_x = mb_xy % h->sps->i_mb_width;

934
935
        int mb_spos = bs_pos(&h->out.bs);

Laurent Aimar's avatar
Laurent Aimar committed
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
        /* 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
953
        if( h->param.b_cabac )
Laurent Aimar's avatar
Laurent Aimar committed
954
        {
Loren Merritt's avatar
Loren Merritt committed
955
956
            if( mb_xy > h->sh.i_first_mb )
                x264_cabac_encode_terminal( &h->cabac, 0 );
Laurent Aimar's avatar
Laurent Aimar committed
957

Loren Merritt's avatar
Loren Merritt committed
958
            if( IS_SKIP( h->mb.i_type ) )
Laurent Aimar's avatar
Laurent Aimar committed
959
960
961
962
963
                x264_cabac_mb_skip( h, 1 );
            else
            {
                if( h->sh.i_type != SLICE_TYPE_I )
                    x264_cabac_mb_skip( h, 0 );
964
                x264_macroblock_write_cabac( h, &h->cabac );
Laurent Aimar's avatar
Laurent Aimar committed
965
            }
Loren Merritt's avatar
Loren Merritt committed
966
967
968
969
970
        }
        else
        {
            if( IS_SKIP( h->mb.i_type ) )
                i_skip++;
Laurent Aimar's avatar
Laurent Aimar committed
971
972
973
974
975
976
977
978
979
980
981
982
            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
983
984
985
986
987
#if VISUALIZE
        if( h->param.b_visualize )
            x264_visualize_mb( h );
#endif

Laurent Aimar's avatar
Laurent Aimar committed
988
989
990
        /* save cache */
        x264_macroblock_cache_save( h );

991
        /* accumulate mb stats */
992
        h->stat.frame.i_mb_count[h->mb.i_type]++;
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
        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] ++;
                }
            }
        }
1010
1011
1012
1013
1014
        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;
        }
1015

1016
1017
        if( h->mb.b_variable_qp )
            x264_ratecontrol_mb(h, bs_pos(&h->out.bs) - mb_spos);
Laurent Aimar's avatar
Laurent Aimar committed
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
    }

    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 )
    {
        x264_cabac_encode_flush( &h->cabac );
1033

Laurent Aimar's avatar
Laurent Aimar committed
1034
1035
1036
1037
1038
1039
1040
1041
    }
    else
    {
        /* rbsp_slice_trailing_bits */
        bs_rbsp_trailing( &h->out.bs );
    }

    x264_nal_end( h );
1042
1043
1044

    /* Compute misc bits */
    h->stat.frame.i_misc_bits = bs_pos( &h->out.bs )
1045
                              + NALU_OVERHEAD * 8
1046
1047
1048
                              - 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
1049
1050
1051
1052
1053
1054

    return 0;
}

static inline int x264_slices_write( x264_t *h )
{
1055
1056
1057
1058
1059
1060
1061
    int i_frame_size;

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

Loren Merritt's avatar
Loren Merritt committed
1062
1063
1064
    if( h->param.i_threads == 1 )
    {
        x264_slice_write( h );
1065
        i_frame_size = h->out.nal[h->out.i_nal-1].i_payload;
Loren Merritt's avatar
Loren Merritt committed
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
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
    }
    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;
    }
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125

#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
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
}

/****************************************************************************
 * 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,
1143
1144
                             x264_picture_t *pic_in,
                             x264_picture_t *pic_out )
Laurent Aimar's avatar
Laurent Aimar committed
1145
{
1146
    x264_frame_t   *frame_psnr = h->fdec; /* just to keep the current decoded frame for psnr calculation */
Laurent Aimar's avatar
Laurent Aimar committed
1147
1148
1149
    int     i_nal_type;
    int     i_nal_ref_idc;
    int     i_slice_type;
Loren Merritt's avatar
Loren Merritt committed
1150
    int     i_frame_size;
Laurent Aimar's avatar
Laurent Aimar committed
1151
1152
1153
1154
1155

    int i;

    int   i_global_qp;

Loren Merritt's avatar
Loren Merritt committed
1156
1157
    char psz_message[80];

Laurent Aimar's avatar
Laurent Aimar committed
1158
1159
1160
1161
1162
1163
1164
    /* no data out */
    *pi_nal = 0;
    *pp_nal = NULL;


    /* ------------------- Setup new frame from picture -------------------- */
    TIMER_START( i_mtime_encode_frame );
1165
    if( pic_in != NULL )
Laurent Aimar's avatar
Laurent Aimar committed
1166
    {
1167
        /* 1: Copy the picture to a frame and move it to a buffer */
Laurent Aimar's avatar
Laurent Aimar committed
1168
1169
        x264_frame_t *fenc = x264_frame_get( h->frames.unused );

1170
        x264_frame_copy_picture( h, fenc, pic_in );
Laurent Aimar's avatar
Laurent Aimar committed
1171

Loren Merritt's avatar
Loren Merritt committed
1172
1173
1174
        if( h->param.i_width % 16 || h->param.i_height % 16 )
            x264_frame_expand_border_mod16( h, fenc );

1175
1176
        fenc->i_frame = h->frames.i_input++;

1177
1178
        x264_frame_put( h->frames.next, fenc );

1179
1180
        if( h->frames.b_have_lowres )
            x264_frame_init_lowres( h->param.cpu, fenc );
1181
1182

        if( h->frames.i_input <= h->frames.i_delay )
1183
        {
1184
1185
            /* Nothing yet to encode */
            /* waiting for filling bframe buffer */
1186
            pic_out->i_type = X264_TYPE_AUTO;
1187
            return 0;
1188
        }
1189
    }
Laurent Aimar's avatar
Laurent Aimar committed
1190

1191
1192
    if( h->frames.current[0] == NULL )
    {
1193
        int bframes = 0;
1194
1195
1196
        /* 2: Select frame types */
        if( h->frames.next[0] == NULL )
            return 0;
Laurent Aimar's avatar
Laurent Aimar committed
1197

1198
        x264_slicetype_decide( h );
1199
1200

        /* 3: move some B-frames and 1 non-B to encode queue */
1201
        while( IS_X264_TYPE_B( h->frames.next[bframes]->i_type ) )
1202
            bframes++;
1203
1204
1205
1206
1207
1208
1209
1210
1211
        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--;
        }
1212
1213
        while( bframes-- )
            x264_frame_put( h->frames.current, x264_frame_get( h->frames.next ) );
Laurent Aimar's avatar
Laurent Aimar committed
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
    }
    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 */
1224
        pic_out->i_type = X264_TYPE_AUTO;
Laurent Aimar's avatar
Laurent Aimar committed
1225
1226
1227
        return 0;
    }

1228
1229
1230
1231
do_encode:

    if( h->fenc->i_type == X264_TYPE_IDR )
    {
1232
        h->frames.i_last_idr = h->fenc->i_frame;
1233
1234
    }

Laurent Aimar's avatar
Laurent Aimar committed
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
    /* ------------------- 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;
    }
1259
1260
1261
1262
1263
1264
    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
1265
1266
1267
1268
1269
1270
1271
    else    /* B frame */
    {
        i_nal_type    = NAL_SLICE;
        i_nal_ref_idc = NAL_PRIORITY_DISPOSABLE;
        i_slice_type = SLICE_TYPE_B;
    }

1272
1273
    h->fdec->i_poc =
    h->fenc->i_poc = 2 * (h->fenc->i_frame - h->frames.i_last_idr);
Laurent Aimar's avatar
Laurent Aimar committed
1274
    h->fdec->i_type = h->fenc->i_type;
Loren Merritt's avatar
Loren Merritt committed
1275
    h->fdec->i_frame = h->fenc->i_frame;
1276
1277
    h->fenc->b_kept_as_ref =
    h->fdec->b_kept_as_ref = i_nal_ref_idc != NAL_PRIORITY_DISPOSABLE;
Laurent Aimar's avatar
Laurent Aimar committed
1278
1279
1280
1281



    /* ------------------- Init                ----------------------------- */
Loren Merritt's avatar
Loren Merritt committed
1282
1283
1284
    /* build ref list 0/1 */
    x264_reference_build_list( h, h->fdec->i_poc, i_slice_type );

Laurent Aimar's avatar
Laurent Aimar committed
1285
    /* Init the rate control */
Måns Rullgård's avatar
Måns Rullgård committed
1286
    x264_ratecontrol_start( h, i_slice_type, h->fenc->i_qpplus1 );
1287
    i_global_qp = x264_ratecontrol_qp( h );
1288

1289
1290
    pic_out->i_qpplus1 =
    h->fdec->i_qpplus1 = i_global_qp + 1;
Laurent Aimar's avatar
Laurent Aimar committed
1291

1292
1293
1294
    if( i_slice_type == SLICE_TYPE_B )
        x264_macroblock_bipred_init( h );

1295
    if( h->fenc->b_kept_as_ref )
Laurent Aimar's avatar
Laurent Aimar committed
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
        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 );

1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
    if(h->param.b_aud){
        int pic_type;

        if(i_slice_type == SLICE_TYPE_I)
            pic_type = 0;
        else if(i_slice_type == SLICE_TYPE_P)
            pic_type = 1;
        else if(i_slice_type == SLICE_TYPE_B)
            pic_type = 2;
        else
            pic_type = 7;

        x264_nal_start(h, NAL_AUD, NAL_PRIORITY_DISPOSABLE);
        bs_write(&h->out.bs, 3, pic_type);
1320
        bs_rbsp_trailing(&h->out.bs);
1321
1322
1323
        x264_nal_end(h);
    }

Loren Merritt's avatar
Loren Merritt committed
1324
1325
1326
    h->i_nal_type = i_nal_type;
    h->i_nal_ref_idc = i_nal_ref_idc;

Laurent Aimar's avatar
Laurent Aimar committed
1327
    /* Write SPS and PPS */