encoder.c 68 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
/*****************************************************************************
 * 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 <math.h>

26 27
#include "common/common.h"
#include "common/cpu.h"
Laurent Aimar's avatar
Laurent Aimar committed
28 29 30 31 32 33

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

Loren Merritt's avatar
Loren Merritt committed
34 35 36 37
#if VISUALIZE
#include "common/visualize.h"
#endif

Laurent Aimar's avatar
Laurent Aimar committed
38
//#define DEBUG_MB_TYPE
Loren Merritt's avatar
Loren Merritt committed
39
//#define DEBUG_DUMP_FRAME
40
//#define DEBUG_BENCHMARK
Laurent Aimar's avatar
Laurent Aimar committed
41

42
#ifdef DEBUG_BENCHMARK
Laurent Aimar's avatar
Laurent Aimar committed
43 44 45 46 47 48 49 50 51 52 53 54
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;\
    }
55 56 57 58
#else
#define TIMER_START( d )
#define TIMER_STOP( d )
#endif
Laurent Aimar's avatar
Laurent Aimar committed
59

60
#define NALU_OVERHEAD 5 // startcode + NAL type costs 5 bytes per frame
Laurent Aimar's avatar
Laurent Aimar committed
61

Loren Merritt's avatar
Loren Merritt committed
62 63 64 65
static void x264_encoder_frame_end( x264_t *h, x264_t *thread_current,
                                    x264_nal_t **pp_nal, int *pi_nal,
                                    x264_picture_t *pic_out );

Laurent Aimar's avatar
Laurent Aimar committed
66 67 68 69 70
/****************************************************************************
 *
 ******************************* x264 libs **********************************
 *
 ****************************************************************************/
71 72 73 74 75 76 77 78 79 80
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
81 82
static void x264_frame_dump( x264_t *h, x264_frame_t *fr, char *name )
{
83
    FILE *f = fopen( name, "r+b" );
Laurent Aimar's avatar
Laurent Aimar committed
84
    int i, y;
85 86
    if( !f )
        return;
Laurent Aimar's avatar
Laurent Aimar committed
87

88 89
    /* Write the frame in display order */
    fseek( f, fr->i_frame * h->param.i_height * h->param.i_width * 3 / 2, SEEK_SET );
Laurent Aimar's avatar
Laurent Aimar committed
90 91 92 93 94 95 96 97 98 99 100 101 102 103

    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 */
104
static void x264_slice_header_init( x264_t *h, x264_slice_header_t *sh,
Laurent Aimar's avatar
Laurent Aimar committed
105
                                    x264_sps_t *sps, x264_pps_t *pps,
Loren Merritt's avatar
Loren Merritt committed
106
                                    int i_idr_pic_id, int i_frame, int i_qp )
Laurent Aimar's avatar
Laurent Aimar committed
107
{
108
    x264_param_t *param = &h->param;
109
    int i;
110

Laurent Aimar's avatar
Laurent Aimar committed
111 112 113 114 115
    /* First we fill all field */
    sh->sps = sps;
    sh->pps = pps;

    sh->i_first_mb  = 0;
Loren Merritt's avatar
Loren Merritt committed
116
    sh->i_last_mb   = h->sps->i_mb_width * h->sps->i_mb_height;
Laurent Aimar's avatar
Laurent Aimar committed
117 118 119 120
    sh->i_pps_id    = pps->i_id;

    sh->i_frame_num = i_frame;

121 122 123
    sh->b_mbaff = h->param.b_interlaced;
    sh->b_field_pic = 0;    /* no field support for now */
    sh->b_bottom_field = 0; /* not yet used */
Laurent Aimar's avatar
Laurent Aimar committed
124 125 126 127 128 129 130 131 132 133 134

    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;

Loren Merritt's avatar
Loren Merritt committed
135 136 137 138 139 140 141 142
    if( !h->mb.b_direct_auto_read )
    {
        if( h->mb.b_direct_auto_write )
            sh->b_direct_spatial_mv_pred = ( h->stat.i_direct_score[1] > h->stat.i_direct_score[0] );
        else
            sh->b_direct_spatial_mv_pred = ( param->analyse.i_direct_mv_pred == X264_DIRECT_PRED_SPATIAL );
    }
    /* else b_direct_spatial_mv_pred was read from the 2pass statsfile */
Laurent Aimar's avatar
Laurent Aimar committed
143 144 145 146 147

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

148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166
    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
167 168
    sh->i_cabac_init_idc = param->i_cabac_init_idc;

169
    sh->i_qp = i_qp;
170
    sh->i_qp_delta = i_qp - pps->i_pic_init_qp;
Laurent Aimar's avatar
Laurent Aimar committed
171 172 173
    sh->b_sp_for_swidth = 0;
    sh->i_qs_delta = 0;

174 175 176
    /* If effective qp <= 15, deblocking would have no effect anyway */
    if( param->b_deblocking_filter
        && ( h->mb.b_variable_qp
177
        || 15 < i_qp + 2 * X264_MAX(param->i_deblocking_filter_alphac0, param->i_deblocking_filter_beta) ) )
Laurent Aimar's avatar
Laurent Aimar committed
178 179 180 181 182 183 184 185 186 187 188 189 190
    {
        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 )
{
191 192
    int i;

193 194 195 196 197 198 199 200
    if( sh->b_mbaff )
    {
        assert( sh->i_first_mb % (2*sh->sps->i_mb_width) == 0 );
        bs_write_ue( s, sh->i_first_mb >> 1 );
    }
    else
        bs_write_ue( s, sh->i_first_mb );

Laurent Aimar's avatar
Laurent Aimar committed
201 202 203 204
    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 );

205 206 207 208 209 210 211
    if( !sh->sps->b_frame_mbs_only )
    {
        bs_write1( s, sh->b_field_pic );
        if ( sh->b_field_pic )
            bs_write1( s, sh->b_bottom_field );
    }

Laurent Aimar's avatar
Laurent Aimar committed
212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258
    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 )
    {
259 260
        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
261
        {
262 263 264 265 266 267 268
            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
269 270 271 272
        }
    }
    if( sh->i_type == SLICE_TYPE_B )
    {
273 274
        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
275
        {
276 277 278 279 280 281
            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
282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328
        }
    }

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

329
static int x264_validate_parameters( x264_t *h )
Laurent Aimar's avatar
Laurent Aimar committed
330
{
331
    if( h->param.i_width <= 0 || h->param.i_height <= 0 )
Laurent Aimar's avatar
Laurent Aimar committed
332
    {
333
        x264_log( h, X264_LOG_ERROR, "invalid width x height (%dx%d)\n",
334 335
                  h->param.i_width, h->param.i_height );
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
336 337
    }

Loren Merritt's avatar
Loren Merritt committed
338
    if( h->param.i_width % 2 || h->param.i_height % 2 )
Laurent Aimar's avatar
Laurent Aimar committed
339
    {
Loren Merritt's avatar
Loren Merritt committed
340
        x264_log( h, X264_LOG_ERROR, "width or height not divisible by 2 (%dx%d)\n",
341 342
                  h->param.i_width, h->param.i_height );
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
343
    }
344
    if( h->param.i_csp != X264_CSP_I420 )
Laurent Aimar's avatar
Laurent Aimar committed
345
    {
346
        x264_log( h, X264_LOG_ERROR, "invalid CSP (only I420 supported)\n" );
347
        return -1;
Laurent Aimar's avatar
Laurent Aimar committed
348 349
    }

350
    if( h->param.i_threads == 0 )
Loren Merritt's avatar
Loren Merritt committed
351 352
        h->param.i_threads = x264_cpu_num_processors() * 3/2;
    h->param.i_threads = x264_clip3( h->param.i_threads, 1, X264_THREAD_MAX );
Loren Merritt's avatar
Loren Merritt committed
353 354
    if( h->param.i_threads > 1 )
    {
Loren Merritt's avatar
Loren Merritt committed
355
#ifndef HAVE_PTHREAD
Loren Merritt's avatar
Loren Merritt committed
356
        x264_log( h, X264_LOG_WARNING, "not compiled with pthread support!\n");
Loren Merritt's avatar
Loren Merritt committed
357 358 359 360
        h->param.i_threads = 1;
#else
        if( h->param.i_scenecut_threshold >= 0 )
            h->param.b_pre_scenecut = 1;
Loren Merritt's avatar
Loren Merritt committed
361
#endif
Loren Merritt's avatar
Loren Merritt committed
362
    }
Loren Merritt's avatar
Loren Merritt committed
363

364 365
    if( h->param.b_interlaced )
    {
366
        if( h->param.analyse.i_me_method >= X264_ME_ESA )
367 368 369 370 371 372 373 374 375 376 377
        {
            x264_log( h, X264_LOG_WARNING, "interlace + me=esa is not implemented\n" );
            h->param.analyse.i_me_method = X264_ME_UMH;
        }
        if( h->param.analyse.i_direct_mv_pred > X264_DIRECT_PRED_SPATIAL )
        {
            x264_log( h, X264_LOG_WARNING, "interlace + direct=temporal is not implemented\n" );
            h->param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
        }
    }

378 379
    if( h->param.rc.i_rc_method < 0 || h->param.rc.i_rc_method > 2 )
    {
380
        x264_log( h, X264_LOG_ERROR, "no ratecontrol method specified\n" );
381 382
        return -1;
    }
Loren Merritt's avatar
Loren Merritt committed
383
    h->param.rc.f_rf_constant = x264_clip3f( h->param.rc.f_rf_constant, 0, 51 );
384
    h->param.rc.i_qp_constant = x264_clip3( h->param.rc.i_qp_constant, 0, 51 );
385
    if( h->param.rc.i_rc_method == X264_RC_CRF )
Loren Merritt's avatar
Loren Merritt committed
386
        h->param.rc.i_qp_constant = h->param.rc.f_rf_constant;
387 388
    if( (h->param.rc.i_rc_method == X264_RC_CQP || h->param.rc.i_rc_method == X264_RC_CRF)
        && h->param.rc.i_qp_constant == 0 )
Loren Merritt's avatar
Loren Merritt committed
389 390
    {
        h->mb.b_lossless = 1;
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;
393
        h->param.rc.i_rc_method = X264_RC_CQP;
Loren Merritt's avatar
Loren Merritt committed
394 395
        h->param.rc.f_ip_factor = 1;
        h->param.rc.f_pb_factor = 1;
396
        h->param.analyse.b_transform_8x8 = 0;
Loren Merritt's avatar
Loren Merritt committed
397
        h->param.analyse.b_psnr = 0;
398
        h->param.analyse.b_ssim = 0;
399
        h->param.analyse.i_chroma_qp_offset = 0;
400
        h->param.analyse.i_trellis = 0;
Loren Merritt's avatar
Loren Merritt committed
401
        h->param.analyse.b_fast_pskip = 0;
402
        h->param.analyse.i_noise_reduction = 0;
403
        h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 1, 6 );
404
        h->param.rc.i_aq_mode = 0;
Loren Merritt's avatar
Loren Merritt committed
405
    }
Loren Merritt's avatar
Loren Merritt committed
406 407 408 409 410 411 412 413
    if( h->param.rc.i_rc_method == X264_RC_CQP )
    {
        float qp_p = h->param.rc.i_qp_constant;
        float qp_i = qp_p - 6*log(h->param.rc.f_ip_factor)/log(2);
        float qp_b = qp_p + 6*log(h->param.rc.f_pb_factor)/log(2);
        h->param.rc.i_qp_min = x264_clip3( (int)(X264_MIN3( qp_p, qp_i, qp_b )), 0, 51 );
        h->param.rc.i_qp_max = x264_clip3( (int)(X264_MAX3( qp_p, qp_i, qp_b ) + .999), 0, 51 );
    }
Loren Merritt's avatar
Loren Merritt committed
414

415 416
    if( ( h->param.i_width % 16 || h->param.i_height % 16 )
        && h->param.i_height != 1080 && !h->mb.b_lossless )
Loren Merritt's avatar
Loren Merritt committed
417
    {
418 419 420
        // There's nothing special about 1080 in that the warning still applies to it,
        // but chances are the user can't help it if his content is already 1080p,
        // so there's no point in warning in that case.
Loren Merritt's avatar
Loren Merritt committed
421 422 423 424 425
        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
426
    h->param.i_frame_reference = x264_clip3( h->param.i_frame_reference, 1, 16 );
427 428 429
    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 );
430

Loren Merritt's avatar
Loren Merritt committed
431
    h->param.i_bframe = x264_clip3( h->param.i_bframe, 0, X264_BFRAME_MAX );
432
    h->param.i_bframe_bias = x264_clip3( h->param.i_bframe_bias, -90, 100 );
433
    h->param.b_bframe_pyramid = h->param.b_bframe_pyramid && h->param.i_bframe > 1;
434
    h->param.b_bframe_adaptive = h->param.b_bframe_adaptive && h->param.i_bframe > 0;
435
    h->param.analyse.b_weighted_bipred = h->param.analyse.b_weighted_bipred && h->param.i_bframe > 0;
Loren Merritt's avatar
Loren Merritt committed
436 437 438
    h->mb.b_direct_auto_write = h->param.analyse.i_direct_mv_pred == X264_DIRECT_PRED_AUTO
                                && h->param.i_bframe
                                && ( h->param.rc.b_stat_write || !h->param.rc.b_stat_read );
439 440
    if( h->param.i_scenecut_threshold < 0 )
        h->param.b_pre_scenecut = 0;
Laurent Aimar's avatar
Laurent Aimar committed
441 442 443

    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 );
444 445
    h->param.analyse.i_luma_deadzone[0] = x264_clip3( h->param.analyse.i_luma_deadzone[0], 0, 32 );
    h->param.analyse.i_luma_deadzone[1] = x264_clip3( h->param.analyse.i_luma_deadzone[1], 0, 32 );
Laurent Aimar's avatar
Laurent Aimar committed
446

447
    h->param.i_cabac_init_idc = x264_clip3( h->param.i_cabac_init_idc, 0, 2 );
Laurent Aimar's avatar
Laurent Aimar committed
448

Loren Merritt's avatar
Loren Merritt committed
449 450 451
    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;

452
    if( h->param.analyse.i_me_method < X264_ME_DIA ||
453
        h->param.analyse.i_me_method > X264_ME_TESA )
454
        h->param.analyse.i_me_method = X264_ME_HEX;
455 456 457
    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 )
458
        h->param.analyse.i_me_range = 16;
459 460 461
    if( h->param.analyse.i_me_method == X264_ME_TESA &&
        (h->mb.b_lossless || h->param.analyse.i_subpel_refine <= 1) )
        h->param.analyse.i_me_method = X264_ME_ESA;
462
    h->param.analyse.i_subpel_refine = x264_clip3( h->param.analyse.i_subpel_refine, 1, 7 );
463 464 465 466 467
    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;
468 469
    if( !(h->param.analyse.inter & X264_ANALYSE_PSUB16x16) )
        h->param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
470 471 472 473 474
    if( !h->param.analyse.b_transform_8x8 )
    {
        h->param.analyse.inter &= ~X264_ANALYSE_I8x8;
        h->param.analyse.intra &= ~X264_ANALYSE_I8x8;
    }
475
    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
476 477
    if( !h->param.b_cabac )
        h->param.analyse.i_trellis = 0;
478
    h->param.analyse.i_trellis = x264_clip3( h->param.analyse.i_trellis, 0, 2 );
479 480 481 482 483 484
    h->param.rc.i_aq_mode = x264_clip3( h->param.rc.i_aq_mode, 0, 2 );
    if( h->param.rc.f_aq_strength <= 0 )
        h->param.rc.i_aq_mode = 0;
    /* VAQ effectively replaces qcomp, so qcomp is raised towards 1 to compensate. */
    if( h->param.rc.i_aq_mode == X264_AQ_GLOBAL )
        h->param.rc.f_qcompress = x264_clip3f(h->param.rc.f_qcompress + h->param.rc.f_aq_strength / 0.7, 0, 1);
485
    h->param.analyse.i_noise_reduction = x264_clip3( h->param.analyse.i_noise_reduction, 0, 1<<16 );
486

487 488 489 490 491 492 493 494 495 496 497 498
    {
        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
499
            h->param.analyse.i_mv_range = x264_clip3(h->param.analyse.i_mv_range, 32, 512);
500 501
        if( h->param.analyse.i_direct_8x8_inference < 0 )
            h->param.analyse.i_direct_8x8_inference = l->direct8x8;
502 503
    }

Loren Merritt's avatar
Loren Merritt committed
504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526
    if( h->param.i_threads > 1 )
    {
        int r = h->param.analyse.i_mv_range_thread;
        int r2;
        if( r <= 0 )
        {
            // half of the available space is reserved and divided evenly among the threads,
            // the rest is allocated to whichever thread is far enough ahead to use it.
            // reserving more space increases quality for some videos, but costs more time
            // in thread synchronization.
            int max_range = (h->param.i_height + X264_THREAD_HEIGHT) / h->param.i_threads - X264_THREAD_HEIGHT;
            r = max_range / 2;
        }
        r = X264_MAX( r, h->param.analyse.i_me_range );
        r = X264_MIN( r, h->param.analyse.i_mv_range );
        // round up to use the whole mb row
        r2 = (r & ~15) + ((-X264_THREAD_HEIGHT) & 15);
        if( r2 < r )
            r2 += 16;
        x264_log( h, X264_LOG_DEBUG, "using mv_range_thread = %d\n", r2 );
        h->param.analyse.i_mv_range_thread = r2;
    }

Loren Merritt's avatar
Loren Merritt committed
527 528 529 530 531
    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;

532 533
    h->param.i_sps_id &= 31;

534 535 536 537 538 539
    if( h->param.i_log_level < X264_LOG_INFO )
    {
        h->param.analyse.b_psnr = 0;
        h->param.analyse.b_ssim = 0;
    }

540 541 542 543
    /* ensure the booleans are 0 or 1 so they can be used in math */
#define BOOLIFY(x) h->param.x = !!h->param.x
    BOOLIFY( b_cabac );
    BOOLIFY( b_deblocking_filter );
544
    BOOLIFY( b_interlaced );
545
    BOOLIFY( analyse.b_transform_8x8 );
546
    BOOLIFY( analyse.i_direct_8x8_inference );
547 548 549 550 551 552 553
    BOOLIFY( analyse.b_bidir_me );
    BOOLIFY( analyse.b_chroma_me );
    BOOLIFY( analyse.b_fast_pskip );
    BOOLIFY( rc.b_stat_write );
    BOOLIFY( rc.b_stat_read );
#undef BOOLIFY

554 555 556
    return 0;
}

557 558
static void mbcmp_init( x264_t *h )
{
559 560 561 562 563 564
    int satd = !h->mb.b_lossless && h->param.analyse.i_subpel_refine > 1;
    memcpy( h->pixf.mbcmp, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.mbcmp) );
    satd &= h->param.analyse.i_me_method == X264_ME_TESA;
    memcpy( h->pixf.fpelcmp, satd ? h->pixf.satd : h->pixf.sad, sizeof(h->pixf.fpelcmp) );
    memcpy( h->pixf.fpelcmp_x3, satd ? h->pixf.satd_x3 : h->pixf.sad_x3, sizeof(h->pixf.fpelcmp_x3) );
    memcpy( h->pixf.fpelcmp_x4, satd ? h->pixf.satd_x4 : h->pixf.sad_x4, sizeof(h->pixf.fpelcmp_x4) );
565 566
}

567 568 569 570 571 572
/****************************************************************************
 * x264_encoder_open:
 ****************************************************************************/
x264_t *x264_encoder_open   ( x264_param_t *param )
{
    x264_t *h = x264_malloc( sizeof( x264_t ) );
573
    char buf[1000], *p;
574 575 576
    int i;

    memset( h, 0, sizeof( x264_t ) );
577 578 579 580 581 582 583 584 585 586

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

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

587 588 589 590 591 592 593
    if( h->param.psz_cqm_file )
        if( x264_cqm_parse_file( h, h->param.psz_cqm_file ) < 0 )
        {
            x264_free( h );
            return NULL;
        }

594 595 596 597 598 599 600
    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 );

601 602 603
    /* VUI */
    if( h->param.vui.i_sar_width > 0 && h->param.vui.i_sar_height > 0 )
    {
604 605
        int i_w = param->vui.i_sar_width;
        int i_h = param->vui.i_sar_height;
606

Loren Merritt's avatar
Loren Merritt committed
607
        x264_reduce_fraction( &i_w, &i_h );
608

609
        while( i_w > 65535 || i_h > 65535 )
610
        {
611 612
            i_w /= 2;
            i_h /= 2;
613 614 615 616
        }

        h->param.vui.i_sar_width = 0;
        h->param.vui.i_sar_height = 0;
617
        if( i_w == 0 || i_h == 0 )
618
        {
619
            x264_log( h, X264_LOG_WARNING, "cannot create valid sample aspect ratio\n" );
620 621 622
        }
        else
        {
623 624 625
            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;
626 627 628
        }
    }

Loren Merritt's avatar
Loren Merritt committed
629
    x264_reduce_fraction( &h->param.i_fps_num, &h->param.i_fps_den );
630

Laurent Aimar's avatar
Laurent Aimar committed
631 632 633 634 635 636
    /* Init x264_t */
    h->i_frame = 0;
    h->i_frame_num = 0;
    h->i_idr_pic_id = 0;

    h->sps = &h->sps_array[0];
637
    x264_sps_init( h->sps, h->param.i_sps_id, &h->param );
Laurent Aimar's avatar
Laurent Aimar committed
638 639

    h->pps = &h->pps_array[0];
640
    x264_pps_init( h->pps, h->param.i_sps_id, &h->param, h->sps);
Loren Merritt's avatar
Loren Merritt committed
641

642 643
    x264_validate_levels( h );

Loren Merritt's avatar
Loren Merritt committed
644 645 646 647 648
    if( x264_cqm_init( h ) < 0 )
    {
        x264_free( h );
        return NULL;
    }
649 650
    
    h->mb.i_mb_count = h->sps->i_mb_width * h->sps->i_mb_height;
Laurent Aimar's avatar
Laurent Aimar committed
651 652

    /* Init frames. */
Loren Merritt's avatar
Loren Merritt committed
653
    h->frames.i_delay = h->param.i_bframe + h->param.i_threads - 1;
654 655
    h->frames.i_max_ref0 = h->param.i_frame_reference;
    h->frames.i_max_ref1 = h->sps->vui.i_num_reorder_frames;
656
    h->frames.i_max_dpb  = h->sps->vui.i_max_dec_frame_buffering;
657
    h->frames.b_have_lowres = !h->param.rc.b_stat_read
658 659
        && ( h->param.rc.i_rc_method == X264_RC_ABR
          || h->param.rc.i_rc_method == X264_RC_CRF
660 661
          || h->param.b_bframe_adaptive
          || h->param.b_pre_scenecut );
662

663
    h->frames.i_last_idr = - h->param.i_keyint_max;
664
    h->frames.i_input    = 0;
665
    h->frames.last_nonb  = NULL;
Laurent Aimar's avatar
Laurent Aimar committed
666 667 668 669

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

Loren Merritt's avatar
Loren Merritt committed
670
    x264_rdo_init( );
Laurent Aimar's avatar
Laurent Aimar committed
671 672 673

    /* init CPU functions */
    x264_predict_16x16_init( h->param.cpu, h->predict_16x16 );
674
    x264_predict_8x8c_init( h->param.cpu, h->predict_8x8c );
Laurent Aimar's avatar
Laurent Aimar committed
675 676 677 678 679
    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 );
680
    x264_zigzag_init( h->param.cpu, &h->zigzagf, h->param.b_interlaced );
681
    x264_mc_init( h->param.cpu, &h->mc );
682
    x264_quant_init( h, h->param.cpu, &h->quantf );
Loren Merritt's avatar
Loren Merritt committed
683
    x264_deblock_init( h->param.cpu, &h->loopf );
684
    x264_dct_init_weights();
Laurent Aimar's avatar
Laurent Aimar committed
685

686
    mbcmp_init( h );
Loren Merritt's avatar
Loren Merritt committed
687

688 689 690 691 692 693 694 695
    p = buf + sprintf( buf, "using cpu capabilities:" );
    for( i=0; x264_cpu_names[i].flags; i++ )
        if( (param->cpu & x264_cpu_names[i].flags) == x264_cpu_names[i].flags
            && (!i || x264_cpu_names[i].flags != x264_cpu_names[i-1].flags) )
            p += sprintf( p, " %s", x264_cpu_names[i].name );
    if( !param->cpu )
        p += sprintf( p, " none!" );
    x264_log( h, X264_LOG_INFO, "%s\n", buf );
696

Loren Merritt's avatar
Loren Merritt committed
697
    h->out.i_nal = 0;
698 699 700
    h->out.i_bitstream = X264_MAX( 1000000, h->param.i_width * h->param.i_height * 4
        * ( h->param.rc.i_rc_method == X264_RC_ABR ? pow( 0.95, h->param.rc.i_qp_min )
          : pow( 0.95, h->param.rc.i_qp_constant ) * X264_MAX( 1, h->param.rc.f_ip_factor )));
Loren Merritt's avatar
Loren Merritt committed
701

Loren Merritt's avatar
Loren Merritt committed
702
    h->thread[0] = h;
703
    h->i_thread_num = 0;
704
    for( i = 1; i < h->param.i_threads; i++ )
Loren Merritt's avatar
Loren Merritt committed
705 706
        h->thread[i] = x264_malloc( sizeof(x264_t) );

Loren Merritt's avatar
Loren Merritt committed
707 708 709 710
    for( i = 0; i < h->param.i_threads; i++ )
    {
        if( i > 0 )
            *h->thread[i] = *h;
711
        h->thread[i]->fdec = x264_frame_pop_unused( h );
Loren Merritt's avatar
Loren Merritt committed
712 713 714 715 716 717 718 719
        h->thread[i]->out.p_bitstream = x264_malloc( h->out.i_bitstream );
        if( x264_macroblock_cache_init( h->thread[i] ) < 0 )
            return NULL;
    }

    if( x264_ratecontrol_new( h ) < 0 )
        return NULL;

720 721 722 723 724 725 726 727 728 729 730 731 732 733 734
#ifdef DEBUG_DUMP_FRAME
    {
        /* create or truncate the reconstructed video file */
        FILE *f = fopen( "fdec.yuv", "w" );
        if( f )
            fclose( f );
        else
        {
            x264_log( h, X264_LOG_ERROR, "can't write to fdec.yuv\n" );
            x264_free( h );
            return NULL;
        }
    }
#endif

Laurent Aimar's avatar
Laurent Aimar committed
735 736 737
    return h;
}

738 739 740 741 742
/****************************************************************************
 * x264_encoder_reconfig:
 ****************************************************************************/
int x264_encoder_reconfig( x264_t *h, x264_param_t *param )
{
743 744 745
#define COPY(var) h->param.var = param->var
    COPY( i_frame_reference ); // but never uses more refs than initially specified
    COPY( i_bframe_bias );
746 747
    if( h->param.i_scenecut_threshold >= 0 && param->i_scenecut_threshold >= 0 )
        COPY( i_scenecut_threshold ); // can't turn it on or off, only vary the threshold
748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764
    COPY( b_deblocking_filter );
    COPY( i_deblocking_filter_alphac0 );
    COPY( i_deblocking_filter_beta );
    COPY( analyse.intra );
    COPY( analyse.inter );
    COPY( analyse.i_direct_mv_pred );
    COPY( analyse.i_me_method );
    COPY( analyse.i_me_range );
    COPY( analyse.i_noise_reduction );
    COPY( analyse.i_subpel_refine );
    COPY( analyse.i_trellis );
    COPY( analyse.b_bidir_me );
    COPY( analyse.b_bframe_rdo );
    COPY( analyse.b_chroma_me );
    COPY( analyse.b_dct_decimate );
    COPY( analyse.b_fast_pskip );
    COPY( analyse.b_mixed_references );
765
    // can only twiddle these if they were enabled to begin with:
766
    if( h->pps->b_transform_8x8_mode )
767 768 769 770
        COPY( analyse.b_transform_8x8 );
    if( h->frames.i_max_ref1 > 1 )
        COPY( b_bframe_pyramid );
#undef COPY
Loren Merritt's avatar
Loren Merritt committed
771

772
    mbcmp_init( h );
Loren Merritt's avatar
Loren Merritt committed
773

774 775 776
    return x264_validate_parameters( h );
}

Laurent Aimar's avatar
Laurent Aimar committed
777 778 779 780 781 782 783 784 785
/* 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;

    nal->i_payload= 0;
786
    nal->p_payload= &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8];
Laurent Aimar's avatar
Laurent Aimar committed
787 788 789 790
}
static void x264_nal_end( x264_t *h )
{
    x264_nal_t *nal = &h->out.nal[h->out.i_nal];
791
    nal->i_payload = &h->out.p_bitstream[bs_pos( &h->out.bs ) / 8] - nal->p_payload;
Laurent Aimar's avatar
Laurent Aimar committed
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
    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 )
    {
807 808
        /* identify ourself */
        x264_nal_start( h, NAL_SEI, NAL_PRIORITY_DISPOSABLE );
809
        x264_sei_version_write( h, &h->out.bs );
810 811
        x264_nal_end( h );

Laurent Aimar's avatar
Laurent Aimar committed
812 813 814 815 816 817 818 819 820 821 822 823 824
        /* 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];
825
    h->out.i_nal = 0;
Laurent Aimar's avatar
Laurent Aimar committed
826 827 828 829

    return 0;
}

Loren Merritt's avatar
Loren Merritt committed
830
static inline void x264_reference_build_list( x264_t *h, int i_poc )
Laurent Aimar's avatar
Laurent Aimar committed
831 832 833 834 835 836 837
{
    int i;
    int b_ok;

    /* build ref list 0/1 */
    h->i_ref0 = 0;
    h->i_ref1 = 0;
Loren Merritt's avatar
Loren Merritt committed
838
    for( i = 0; h->frames.reference[i]; i++ )
Laurent Aimar's avatar
Laurent Aimar committed
839
    {
Loren Merritt's avatar
Loren Merritt committed
840
        if( h->frames.reference[i]->i_poc < i_poc )
Laurent Aimar's avatar
Laurent Aimar committed
841
        {
Loren Merritt's avatar
Loren Merritt committed
842 843 844 845 846
            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];
Laurent Aimar's avatar
Laurent Aimar committed
847 848
        }
    }
849

Laurent Aimar's avatar
Laurent Aimar committed
850 851 852 853 854 855 856 857
    /* 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
858
                XCHG( x264_frame_t*, h->fref0[i], h->fref0[i+1] );
Laurent Aimar's avatar
Laurent Aimar committed
859 860 861 862 863 864 865 866 867 868 869 870 871
                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
872
                XCHG( x264_frame_t*, h->fref1[i], h->fref1[i+1] );
Laurent Aimar's avatar
Laurent Aimar committed
873 874 875 876 877 878
                b_ok = 0;
                break;
            }
        }
    } while( !b_ok );

879 880 881 882
    /* 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;
Loren Merritt's avatar
Loren Merritt committed
883
    if( h->sh.i_type == SLICE_TYPE_P )
Laurent Aimar's avatar
Laurent Aimar committed
884
    {
885 886 887 888 889 890
        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
891
    }
892 893

    h->i_ref1 = X264_MIN( h->i_ref1, h->frames.i_max_ref1 );
894
    h->i_ref0 = X264_MIN( h->i_ref0, h->frames.i_max_ref0 );
895
    h->i_ref0 = X264_MIN( h->i_ref0, h->param.i_frame_reference ); // if reconfig() has lowered the limit
896
    assert( h->i_ref0 + h->i_ref1 <= 16 );
897 898
    h->mb.pic.i_fref[0] = h->i_ref0;
    h->mb.pic.i_fref[1] = h->i_ref1;
Laurent Aimar's avatar
Laurent Aimar committed
899 900
}

Loren Merritt's avatar
Loren Merritt committed
901
static void x264_fdec_filter_row( x264_t *h, int mb_y )
Laurent Aimar's avatar
Laurent Aimar committed
902
{
Loren Merritt's avatar
Loren Merritt committed
903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928
    /* mb_y is the mb to be encoded next, not the mb to be filtered here */
    int b_hpel = h->fdec->b_kept_as_ref;
    int b_deblock = !h->sh.i_disable_deblocking_filter_idc;
    int b_end = mb_y == h->sps->i_mb_height;
    int min_y = mb_y - (1 << h->sh.b_mbaff);
#ifndef DEBUG_DUMP_FRAME
    b_deblock &= b_hpel;
#endif
    if( mb_y & h->sh.b_mbaff )
        return;
    if( min_y < 0 )
        return;

    if( !b_end )
    {
        int i, j;
        for( j=0; j<=h->sh.b_mbaff; j++ )
            for( i=0; i<3; i++ )
            {
                memcpy( h->mb.intra_border_backup[j][i],
                        h->fdec->plane[i] + ((mb_y*16 >> !!i) + j - 1 - h->sh.b_mbaff) * h->fdec->i_stride[i],
                        h->sps->i_mb_width*16 >> !!i );
            }
    }

    if( b_deblock )
Laurent Aimar's avatar
Laurent Aimar committed
929
    {
Loren Merritt's avatar
Loren Merritt committed
930 931 932 933 934 935 936 937 938
        int max_y = b_end ? h->sps->i_mb_height : mb_y;
        int y;
        for( y = min_y; y < max_y; y += (1 << h->sh.b_mbaff) )
            x264_frame_deblock_row( h, y );
    }

    if( b_hpel )
    {
        x264_frame_expand_border( h, h->fdec, min_y, b_end );
939
        x264_frame_filter( h, h->fdec, min_y, b_end );
Loren Merritt's avatar
Loren Merritt committed
940 941 942
        x264_frame_expand_border_filtered( h, h->fdec, min_y, b_end );
    }

943
    if( h->param.i_threads > 1 && h->fdec->b_kept_as_ref )
Loren Merritt's avatar
Loren Merritt committed
944
    {
945
        x264_frame_cond_broadcast( h->fdec, mb_y*16 + (b_end ? 10000 : -(X264_THREAD_HEIGHT << h->sh.b_mbaff)) );
Laurent Aimar's avatar
Laurent Aimar committed
946
    }
947 948 949 950 951 952
}

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

Loren Merritt's avatar
Loren Merritt committed
953 954
    if( h->fdec->i_frame >= 0 )
        h->i_frame++;
Laurent Aimar's avatar
Laurent Aimar committed
955

Loren Merritt's avatar
Loren Merritt committed
956 957 958 959
    if( !h->fdec->b_kept_as_ref )
    {
        if( h->param.i_threads > 1 )
        {
960 961
            x264_frame_push_unused( h, h->fdec );
            h->fdec = x264_frame_pop_unused( h );
Loren Merritt's avatar
Loren Merritt committed
962 963 964
        }
        return;
    }
965

966 967
    /* move lowres copy of the image to the ref frame */
    for( i = 0; i < 4; i++)
968
    {
Loren Merritt's avatar
Loren Merritt committed
969
        XCHG( uint8_t*, h->fdec->lowres[i], h->fenc->lowres[i] );
970 971
        XCHG( uint8_t*, h->fdec->buffer_lowres[i], h->fenc->buffer_lowres[i] );
    }
972 973 974 975 976

    /* 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
977
    /* move frame in the buffer */
978
    x264_frame_push( h->frames.reference, h->fdec );
Loren Merritt's avatar
Loren Merritt committed
979
    if( h->frames.reference[h->frames.i_max_dpb] )
980 981
        x264_frame_push_unused( h, x264_frame_shift( h->frames.reference ) );
    h->fdec = x264_frame_pop_unused( h );
Laurent Aimar's avatar
Laurent Aimar committed
982 983 984 985
}

static inline void x264_reference_reset( x264_t *h )
{
Loren Merritt's avatar
Loren Merritt committed
986
    while( h->frames.reference[0] )
987
        x264_frame_push_unused( h, x264_frame_pop( h->frames.reference ) );
Loren Merritt's avatar
Loren Merritt committed
988 989
    h->fdec->i_poc =
    h->fenc->i_poc = 0;
Laurent Aimar's avatar
Laurent Aimar committed
990 991
}

Loren Merritt's avatar
Loren Merritt committed
992
static inline void x264_slice_init( x264_t *h, int i_nal_type, int i_global_qp )
Laurent Aimar's avatar
Laurent Aimar committed
993 994 995 996
{
    /* ------------------------ Create slice header  ----------------------- */
    if( i_nal_type == NAL_SLICE_IDR )
    {
Loren Merritt's avatar
Loren Merritt committed
997
        x264_slice_header_init( h, &h->sh, h->sps, h->pps, h->i_idr_pic_id, h->i_frame_num, i_global_qp );
Laurent Aimar's avatar
Laurent Aimar committed
998 999

        /* increment id */
1000
        h->i_idr_pic_id = ( h->i_idr_pic_id + 1 ) % 65536;
Laurent Aimar's avatar
Laurent Aimar committed
1001 1002 1003
    }
    else
    {
Loren Merritt's avatar
Loren Merritt committed
1004
        x264_slice_header_init( h, &h->sh, h->sps, h->pps, -1, h->i_frame_num, i_global_qp );
Laurent Aimar's avatar
Laurent Aimar committed
1005 1006 1007 1008 1009 1010 1011

        /* 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;
    }

1012 1013
    h->fdec->i_frame_num = h->sh.i_frame_num;

Laurent Aimar's avatar
Laurent Aimar committed
1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027
    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 ? */
    }

1028
    x264_macroblock_slice_init( h );
Laurent Aimar's avatar
Laurent Aimar committed
1029 1030
}

1031
static void x264_slice_write( x264_t *h )
Laurent Aimar's avatar
Laurent Aimar committed
1032 1033 1034
{
    int i_skip;
    int mb_xy;
1035
    int i;
Laurent Aimar's avatar
Laurent Aimar committed
1036

1037
    /* init stats */
Loren Merritt's avatar
Loren Merritt committed
1038
    memset( &h->stat.frame, 0, sizeof(h->stat.frame) );
Laurent Aimar's avatar
Laurent Aimar committed
1039 1040

    /* Slice */
Loren Merritt's avatar
Loren Merritt committed
1041
    x264_nal_start( h, h->i_nal_type, h->i_nal_ref_idc );
Laurent Aimar's avatar
Laurent Aimar committed
1042 1043

    /* Slice header */
Loren Merritt's avatar
Loren Merritt committed
1044
    x264_slice_header_write( &h->out.bs, &h->sh, h->i_nal_ref_idc );
Laurent Aimar's avatar
Laurent Aimar committed
1045 1046
    if( h->param.b_cabac )
    {
1047
        /* alignment needed */
Laurent Aimar's avatar
Laurent Aimar committed
1048 1049 1050
        bs_align_1( &h->out.bs );

        /* init cabac */
1051
        x264_cabac_context_init( &h->cabac, h->sh.i_type, h->sh.i_qp, h->sh.i_cabac_init_idc );
1052
        x264_cabac_encode_init ( &h->cabac, h->out.bs.p, h->out.bs.p_end );
Laurent Aimar's avatar
Laurent Aimar committed
1053
    }
1054
    h->mb.i_last_qp = h->sh.i_qp;
Laurent Aimar's avatar
Laurent Aimar committed
1055 1056
    h->mb.i_last_dqp = 0;

1057
    for( mb_xy = h->sh.i_first_mb, i_skip = 0; mb_xy < h->sh.i_last_mb; )
Laurent Aimar's avatar
Laurent Aimar committed
1058 1059 1060
    {
        const int i_mb_y = mb_xy / h->sps->i_mb_width;
        const int i_mb_x = mb_xy % h->sps->i_mb_width;
1061
        int mb_spos = bs_pos(&h->out.bs) + x264_cabac_pos(&h->cabac);