set.c 13.7 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 36 37
#include "x264.h"
#include "common/bs.h"
#include "common/set.h"
Laurent Aimar's avatar
Laurent Aimar committed
38 39 40 41 42 43 44 45 46

void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param )
{
    sps->i_id               = i_id;

    if( param->b_cabac || param->i_bframe > 0 )
        sps->i_profile_idc      = PROFILE_MAIN;
    else
        sps->i_profile_idc      = PROFILE_BASELINE;
47
    sps->i_level_idc = param->i_level_idc;
Laurent Aimar's avatar
Laurent Aimar committed
48 49 50 51 52 53

    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 */
54
    while( (1 << sps->i_log2_max_frame_num) <= param->i_keyint_max )
Laurent Aimar's avatar
Laurent Aimar committed
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
    {
        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;
        }
    }

81 82
    sps->i_num_ref_frames = param->i_frame_reference;
    if( param->i_bframe )
83 84 85
        sps->i_num_ref_frames++; /* for backwards ref in B */
    if( param->b_bframe_pyramid )
        sps->i_num_ref_frames++; /* for 2nd backwards ref */
Laurent Aimar's avatar
Laurent Aimar committed
86 87 88 89 90 91
    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;
92 93
    if( sps->b_frame_mbs_only == 0 ||
        !(param->analyse.inter & X264_ANALYSE_PSUB8x8) )
Laurent Aimar's avatar
Laurent Aimar committed
94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114
    {
        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
115
    sps->b_vui = 0;
116
    sps->vui.b_aspect_ratio_info_present = 0;
Måns Rullgård's avatar
Måns Rullgård committed
117

Laurent Aimar's avatar
Laurent Aimar committed
118 119
    if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
    {
120 121 122
        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
123
    }
Måns Rullgård's avatar
Måns Rullgård committed
124 125 126
    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
127
    {
Måns Rullgård's avatar
Måns Rullgård committed
128
        sps->vui.b_timing_info_present = 1;
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
129 130
        /* The standard is confusing me, but this seems to work best
           with other encoders */
Måns Rullgård's avatar
Måns Rullgård committed
131
        sps->vui.i_num_units_in_tick = param->i_fps_den;
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
132
        sps->vui.i_time_scale = param->i_fps_num;
Måns Rullgård's avatar
Måns Rullgård committed
133
        sps->vui.b_fixed_frame_rate = 1;
Laurent Aimar's avatar
Laurent Aimar committed
134
    }
Måns Rullgård's avatar
Måns Rullgård committed
135
    sps->b_vui |= sps->vui.b_timing_info_present;
136 137 138 139 140 141 142 143 144 145 146 147 148

    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->vui.i_num_reorder_frames = param->b_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0;
        sps->vui.i_max_dec_frame_buffering = param->i_frame_reference + sps->vui.i_num_reorder_frames + 1;
    }
    sps->b_vui |= sps->vui.b_bitstream_restriction;
Laurent Aimar's avatar
Laurent Aimar committed
149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206
}


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 );
    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
207 208 209 210 211
        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
212
            {
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229
                { 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
            {
230
                bs_write( s, 8, 255);   /* aspect_ratio_idc (extented) */
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
231 232 233 234
                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
235 236 237 238 239 240 241 242 243 244

        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
245 246 247 248 249 250 251 252 253

        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
254 255 256
        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 */
257 258 259 260 261 262 263 264 265 266 267
        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
268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
    }

    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;

    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;
            }
        }
    }
    pps->i_num_ref_idx_l0_active = 1;
    pps->i_num_ref_idx_l1_active = 1;

    pps->b_weighted_pred = 0;
321
    pps->b_weighted_bipred = param->analyse.b_weighted_bipred ? 2 : 0;
Laurent Aimar's avatar
Laurent Aimar committed
322 323 324 325

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

326
    pps->i_chroma_qp_index_offset = param->analyse.i_chroma_qp_offset;
Laurent Aimar's avatar
Laurent Aimar committed
327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395
    pps->b_deblocking_filter_control = 1;
    pps->b_constrained_intra_pred = 0;
    pps->b_redundant_pic_cnt = 0;
}

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 );

    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] );
                 */
            }
        }
    }

    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 );

    bs_rbsp_trailing( s );
}

396 397 398 399 400 401 402 403 404 405
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;
406
    sprintf( version, "x264 - core %d - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html",
407 408 409 410 411 412 413 414 415 416 417 418 419 420 421
             X264_BUILD );
    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 );
}