set.c 14.3 KB
Newer Older
Laurent Aimar's avatar
Laurent Aimar committed
1
/*****************************************************************************
Måns Rullgård's avatar
Måns Rullgård committed
2
 * set: h264 encoder (SPS and PPS init and write)
Laurent Aimar's avatar
Laurent Aimar committed
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
 *****************************************************************************
 * Copyright (C) 2003 Laurent Aimar
 * $Id: set.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.
 *****************************************************************************/

24 25 26 27 28
#ifdef HAVE_STDINT_H
#include <stdint.h>
#else
#include <inttypes.h>
#endif
Laurent Aimar's avatar
Laurent Aimar committed
29 30 31
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
32
#include <stdarg.h>
33
#include <math.h>
Laurent Aimar's avatar
Laurent Aimar committed
34

35
#include "x264.h"
36
#include "common/common.h"
Loren Merritt's avatar
Loren Merritt committed
37 38 39
#ifndef _MSC_VER
#include "config.h"
#endif
Laurent Aimar's avatar
Laurent Aimar committed
40 41 42

void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param )
{
43
    sps->i_id = i_id;
Laurent Aimar's avatar
Laurent Aimar committed
44

45 46 47 48
    if( param->analyse.b_transform_8x8 )
        sps->i_profile_idc  = PROFILE_HIGH;
    else if( param->b_cabac || param->i_bframe > 0 )
        sps->i_profile_idc  = PROFILE_MAIN;
Laurent Aimar's avatar
Laurent Aimar committed
49
    else
50
        sps->i_profile_idc  = PROFILE_BASELINE;
51
    sps->i_level_idc = param->i_level_idc;
Laurent Aimar's avatar
Laurent Aimar committed
52 53 54 55 56 57

    sps->b_constraint_set0  = 0;
    sps->b_constraint_set1  = 0;
    sps->b_constraint_set2  = 0;

    sps->i_log2_max_frame_num = 4;  /* at least 4 */
58
    while( (1 << sps->i_log2_max_frame_num) <= param->i_keyint_max )
Laurent Aimar's avatar
Laurent Aimar committed
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
    {
        sps->i_log2_max_frame_num++;
    }
    sps->i_log2_max_frame_num++;    /* just in case */

    sps->i_poc_type = 0;
    if( sps->i_poc_type == 0 )
    {
        sps->i_log2_max_poc_lsb = sps->i_log2_max_frame_num + 1;    /* max poc = 2*frame_num */
    }
    else if( sps->i_poc_type == 1 )
    {
        int i;

        /* FIXME */
        sps->b_delta_pic_order_always_zero = 1;
        sps->i_offset_for_non_ref_pic = 0;
        sps->i_offset_for_top_to_bottom_field = 0;
        sps->i_num_ref_frames_in_poc_cycle = 0;

        for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
        {
            sps->i_offset_for_ref_frame[i] = 0;
        }
    }

85
    sps->vui.i_num_reorder_frames = param->b_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0;
86
    sps->vui.i_max_dec_frame_buffering =
87
    sps->i_num_ref_frames = X264_MIN(16, param->i_frame_reference + sps->vui.i_num_reorder_frames);
88

Laurent Aimar's avatar
Laurent Aimar committed
89 90 91 92 93 94
    sps->b_gaps_in_frame_num_value_allowed = 0;
    sps->i_mb_width = ( param->i_width + 15 ) / 16;
    sps->i_mb_height= ( param->i_height + 15 )/ 16;
    sps->b_frame_mbs_only = 1;
    sps->b_mb_adaptive_frame_field = 0;
    sps->b_direct8x8_inference = 0;
95 96
    if( sps->b_frame_mbs_only == 0 ||
        !(param->analyse.inter & X264_ANALYSE_PSUB8x8) )
Laurent Aimar's avatar
Laurent Aimar committed
97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
    {
        sps->b_direct8x8_inference = 1;
    }

    if( param->i_width % 16 != 0 || param->i_height % 16 != 0 )
    {
        sps->b_crop = 1;
        sps->crop.i_left    = 0;
        sps->crop.i_right   = ( 16 - param->i_width % 16)/2;
        sps->crop.i_top     = 0;
        sps->crop.i_bottom  = ( 16 - param->i_height % 16)/2;
    }
    else
    {
        sps->b_crop = 0;
        sps->crop.i_left    = 0;
        sps->crop.i_right   = 0;
        sps->crop.i_top     = 0;
        sps->crop.i_bottom  = 0;
    }

Måns Rullgård's avatar
Måns Rullgård committed
118
    sps->b_vui = 0;
119
    sps->vui.b_aspect_ratio_info_present = 0;
Måns Rullgård's avatar
Måns Rullgård committed
120

Laurent Aimar's avatar
Laurent Aimar committed
121 122
    if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
    {
123 124 125
        sps->vui.b_aspect_ratio_info_present = 1;
        sps->vui.i_sar_width = param->vui.i_sar_width;
        sps->vui.i_sar_height= param->vui.i_sar_height;
Laurent Aimar's avatar
Laurent Aimar committed
126
    }
Måns Rullgård's avatar
Måns Rullgård committed
127 128 129
    sps->b_vui |= sps->vui.b_aspect_ratio_info_present;

    if( param->i_fps_num > 0 && param->i_fps_den > 0)
Laurent Aimar's avatar
Laurent Aimar committed
130
    {
Måns Rullgård's avatar
Måns Rullgård committed
131
        sps->vui.b_timing_info_present = 1;
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
132 133
        /* The standard is confusing me, but this seems to work best
           with other encoders */
Måns Rullgård's avatar
Måns Rullgård committed
134
        sps->vui.i_num_units_in_tick = param->i_fps_den;
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
135
        sps->vui.i_time_scale = param->i_fps_num;
Måns Rullgård's avatar
Måns Rullgård committed
136
        sps->vui.b_fixed_frame_rate = 1;
Laurent Aimar's avatar
Laurent Aimar committed
137
    }
Måns Rullgård's avatar
Måns Rullgård committed
138
    sps->b_vui |= sps->vui.b_timing_info_present;
139 140 141 142 143 144 145 146 147 148 149

    sps->vui.b_bitstream_restriction = param->i_bframe > 0;
    if( sps->vui.b_bitstream_restriction )
    {
        sps->vui.b_motion_vectors_over_pic_boundaries = 1;
        sps->vui.i_max_bytes_per_pic_denom = 0;
        sps->vui.i_max_bits_per_mb_denom = 0;
        sps->vui.i_log2_max_mv_length_horizontal =
        sps->vui.i_log2_max_mv_length_vertical = (int)(log(param->analyse.i_mv_range*4-1)/log(2)) + 1;
    }
    sps->b_vui |= sps->vui.b_bitstream_restriction;
Laurent Aimar's avatar
Laurent Aimar committed
150 151 152 153 154 155 156 157 158 159 160 161 162 163 164
}


void x264_sps_write( bs_t *s, x264_sps_t *sps )
{
    bs_write( s, 8, sps->i_profile_idc );
    bs_write( s, 1, sps->b_constraint_set0 );
    bs_write( s, 1, sps->b_constraint_set1 );
    bs_write( s, 1, sps->b_constraint_set2 );

    bs_write( s, 5, 0 );    /* reserved */

    bs_write( s, 8, sps->i_level_idc );

    bs_write_ue( s, sps->i_id );
165 166 167 168 169 170 171 172 173 174

    if( sps->i_profile_idc >= PROFILE_HIGH )
    {
        bs_write_ue( s, 1 ); // chroma_format_idc = 4:2:0
        bs_write_ue( s, 0 ); // bit_depth_luma_minus8
        bs_write_ue( s, 0 ); // bit_depth_chroma_minus8
        bs_write( s, 1, 0 ); // qpprime_y_zero_transform_bypass_flag
        bs_write( s, 1, 0 ); // seq_scaling_matrix_present_flag
    }

Laurent Aimar's avatar
Laurent Aimar committed
175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
    bs_write_ue( s, sps->i_log2_max_frame_num - 4 );
    bs_write_ue( s, sps->i_poc_type );
    if( sps->i_poc_type == 0 )
    {
        bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );
    }
    else if( sps->i_poc_type == 1 )
    {
        int i;

        bs_write( s, 1, sps->b_delta_pic_order_always_zero );
        bs_write_se( s, sps->i_offset_for_non_ref_pic );
        bs_write_se( s, sps->i_offset_for_top_to_bottom_field );
        bs_write_ue( s, sps->i_num_ref_frames_in_poc_cycle );

        for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
        {
            bs_write_se( s, sps->i_offset_for_ref_frame[i] );
        }
    }
    bs_write_ue( s, sps->i_num_ref_frames );
    bs_write( s, 1, sps->b_gaps_in_frame_num_value_allowed );
    bs_write_ue( s, sps->i_mb_width - 1 );
    bs_write_ue( s, sps->i_mb_height - 1);
    bs_write( s, 1, sps->b_frame_mbs_only );
    if( !sps->b_frame_mbs_only )
    {
        bs_write( s, 1, sps->b_mb_adaptive_frame_field );
    }
    bs_write( s, 1, sps->b_direct8x8_inference );

    bs_write( s, 1, sps->b_crop );
    if( sps->b_crop )
    {
        bs_write_ue( s, sps->crop.i_left );
        bs_write_ue( s, sps->crop.i_right );
        bs_write_ue( s, sps->crop.i_top );
        bs_write_ue( s, sps->crop.i_bottom );
    }

    bs_write( s, 1, sps->b_vui );
    if( sps->b_vui )
    {
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
218 219 220 221 222
        bs_write1( s, sps->vui.b_aspect_ratio_info_present );
        if( sps->vui.b_aspect_ratio_info_present )
        {
            int i;
            static const struct { int w, h; int sar; } sar[] =
Måns Rullgård's avatar
Måns Rullgård committed
223
            {
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240
                { 1,   1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },
                { 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },
                { 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},
                { 160,99, 13}, { 0, 0, -1 }
            };
            for( i = 0; sar[i].sar != -1; i++ )
            {
                if( sar[i].w == sps->vui.i_sar_width &&
                    sar[i].h == sps->vui.i_sar_height )
                    break;
            }
            if( sar[i].sar != -1 )
            {
                bs_write( s, 8, sar[i].sar );
            }
            else
            {
241
                bs_write( s, 8, 255);   /* aspect_ratio_idc (extented) */
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
242 243 244 245
                bs_write( s, 16, sps->vui.i_sar_width );
                bs_write( s, 16, sps->vui.i_sar_height );
            }
        }
Laurent Aimar's avatar
Laurent Aimar committed
246 247 248 249 250 251 252 253 254 255

        bs_write1( s, 0 );      /* overscan_info_present_flag */

        bs_write1( s, 0 );      /* video_signal_type_present_flag */
#if 0
        bs_write( s, 3, 5 );    /* unspecified video format */
        bs_write1( s, 1 );      /* video full range flag */
        bs_write1( s, 0 );      /* colour description present flag */
#endif
        bs_write1( s, 0 );      /* chroma_loc_info_present_flag */
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
256 257 258 259 260 261 262 263 264

        bs_write1( s, sps->vui.b_timing_info_present );
        if( sps->vui.b_timing_info_present )
        {
            bs_write( s, 32, sps->vui.i_num_units_in_tick );
            bs_write( s, 32, sps->vui.i_time_scale );
            bs_write1( s, sps->vui.b_fixed_frame_rate );
        }

Laurent Aimar's avatar
Laurent Aimar committed
265 266 267
        bs_write1( s, 0 );      /* nal_hrd_parameters_present_flag */
        bs_write1( s, 0 );      /* vcl_hrd_parameters_present_flag */
        bs_write1( s, 0 );      /* pic_struct_present_flag */
268 269 270 271 272 273 274 275 276 277 278
        bs_write1( s, sps->vui.b_bitstream_restriction );
        if( sps->vui.b_bitstream_restriction )
        {
            bs_write1( s, sps->vui.b_motion_vectors_over_pic_boundaries );
            bs_write_ue( s, sps->vui.i_max_bytes_per_pic_denom );
            bs_write_ue( s, sps->vui.i_max_bits_per_mb_denom );
            bs_write_ue( s, sps->vui.i_log2_max_mv_length_horizontal );
            bs_write_ue( s, sps->vui.i_log2_max_mv_length_vertical );
            bs_write_ue( s, sps->vui.i_num_reorder_frames );
            bs_write_ue( s, sps->vui.i_max_dec_frame_buffering );
        }
Laurent Aimar's avatar
Laurent Aimar committed
279 280 281 282 283 284 285 286 287 288 289 290 291 292
    }

    bs_rbsp_trailing( s );
}

void x264_pps_init( x264_pps_t *pps, int i_id, x264_param_t *param, x264_sps_t *sps )
{
    pps->i_id = i_id;
    pps->i_sps_id = sps->i_id;
    pps->b_cabac = param->b_cabac;

    pps->b_pic_order = 0;
    pps->i_num_slice_groups = 1;

293
#if 0
Laurent Aimar's avatar
Laurent Aimar committed
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( pps->i_num_slice_groups > 1 )
    {
        int i;

        pps->i_slice_group_map_type = 0;
        if( pps->i_slice_group_map_type == 0 )
        {
            for( i = 0; i < pps->i_num_slice_groups; i++ )
            {
                pps->i_run_length[i] = 1;
            }
        }
        else if( pps->i_slice_group_map_type == 2 )
        {
            for( i = 0; i < pps->i_num_slice_groups; i++ )
            {
                pps->i_top_left[i] = 0;
                pps->i_bottom_right[i] = 0;
            }
        }
        else if( pps->i_slice_group_map_type >= 3 &&
                 pps->i_slice_group_map_type <= 5 )
        {
            pps->b_slice_group_change_direction = 0;
            pps->i_slice_group_change_rate = 0;
        }
        else if( pps->i_slice_group_map_type == 6 )
        {
            pps->i_pic_size_in_map_units = 1;
            for( i = 0; i < pps->i_pic_size_in_map_units; i++ )
            {
                pps->i_slice_group_id[i] = 0;
            }
        }
    }
329
#endif
Laurent Aimar's avatar
Laurent Aimar committed
330 331 332 333
    pps->i_num_ref_idx_l0_active = 1;
    pps->i_num_ref_idx_l1_active = 1;

    pps->b_weighted_pred = 0;
334
    pps->b_weighted_bipred = param->analyse.b_weighted_bipred ? 2 : 0;
Laurent Aimar's avatar
Laurent Aimar committed
335 336 337 338

    pps->i_pic_init_qp = 26;
    pps->i_pic_init_qs = 26;

339
    pps->i_chroma_qp_index_offset = param->analyse.i_chroma_qp_offset;
Laurent Aimar's avatar
Laurent Aimar committed
340 341 342
    pps->b_deblocking_filter_control = 1;
    pps->b_constrained_intra_pred = 0;
    pps->b_redundant_pic_cnt = 0;
343 344

    pps->b_transform_8x8_mode = param->analyse.b_transform_8x8 ? 1 : 0;
Laurent Aimar's avatar
Laurent Aimar committed
345 346 347 348 349 350 351 352 353 354 355
}

void x264_pps_write( bs_t *s, x264_pps_t *pps )
{
    bs_write_ue( s, pps->i_id );
    bs_write_ue( s, pps->i_sps_id );

    bs_write( s, 1, pps->b_cabac );
    bs_write( s, 1, pps->b_pic_order );
    bs_write_ue( s, pps->i_num_slice_groups - 1 );

356
#if 0
Laurent Aimar's avatar
Laurent Aimar committed
357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394
    if( pps->i_num_slice_groups > 1 )
    {
        int i;

        bs_write_ue( s, pps->i_slice_group_map_type );
        if( pps->i_slice_group_map_type == 0 )
        {
            for( i = 0; i < pps->i_num_slice_groups; i++ )
            {
                bs_write_ue( s, pps->i_run_length[i] - 1 );
            }
        }
        else if( pps->i_slice_group_map_type == 2 )
        {
            for( i = 0; i < pps->i_num_slice_groups; i++ )
            {
                bs_write_ue( s, pps->i_top_left[i] );
                bs_write_ue( s, pps->i_bottom_right[i] );
            }
        }
        else if( pps->i_slice_group_map_type >= 3 &&
                 pps->i_slice_group_map_type <= 5 )
        {
            bs_write( s, 1, pps->b_slice_group_change_direction );
            bs_write_ue( s, pps->b_slice_group_change_direction - 1 );
        }
        else if( pps->i_slice_group_map_type == 6 )
        {
            bs_write_ue( s, pps->i_pic_size_in_map_units - 1 );
            for( i = 0; i < pps->i_pic_size_in_map_units; i++ )
            {
                /* FIXME */
                /* bs_write( s, ceil( log2( pps->i_pic_size_in_map_units +1 ) ),
                 *              pps->i_slice_group_id[i] );
                 */
            }
        }
    }
395
#endif
Laurent Aimar's avatar
Laurent Aimar committed
396 397 398 399 400 401 402 403 404 405 406 407 408 409

    bs_write_ue( s, pps->i_num_ref_idx_l0_active - 1 );
    bs_write_ue( s, pps->i_num_ref_idx_l1_active - 1 );
    bs_write( s, 1, pps->b_weighted_pred );
    bs_write( s, 2, pps->b_weighted_bipred );

    bs_write_se( s, pps->i_pic_init_qp - 26 );
    bs_write_se( s, pps->i_pic_init_qs - 26 );
    bs_write_se( s, pps->i_chroma_qp_index_offset );

    bs_write( s, 1, pps->b_deblocking_filter_control );
    bs_write( s, 1, pps->b_constrained_intra_pred );
    bs_write( s, 1, pps->b_redundant_pic_cnt );

410 411 412 413 414 415 416
    if( pps->b_transform_8x8_mode )
    {
        bs_write( s, 1, pps->b_transform_8x8_mode );
        bs_write( s, 1, 0 ); // pic_scaling_matrix_present_flag
        bs_write_se( s, 0 ); // second_chroma_qp_index_offset
    }

Laurent Aimar's avatar
Laurent Aimar committed
417 418 419
    bs_rbsp_trailing( s );
}

420 421 422 423 424 425 426 427 428 429
void x264_sei_version_write( bs_t *s )
{
    int i;
    // random ID number generated according to ISO-11578
    const uint8_t uuid[16] = {
        0xdc, 0x45, 0xe9, 0xbd, 0xe6, 0xd9, 0x48, 0xb7,
        0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef
    };
    char version[256];
    int length;
430 431
    sprintf( version, "x264 - core %d%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html",
             X264_BUILD, X264_VERSION );
432 433 434 435 436 437 438 439 440 441 442 443 444 445
    length = strlen(version)+1+16;

    bs_write( s, 8, 0x5 ); // payload_type = user_data_unregistered
    while( length > 255 )
        bs_write( s, 8, 255 ), length -= 255;
    bs_write( s, 8, length ); // payload_size

    for( i = 0; i < 16; i++ )
        bs_write( s, 8, uuid[i] );
    for( i = 0; i < length-16; i++ )
        bs_write( s, 8, version[i] );

    bs_rbsp_trailing( s );
}