set.c 11.7 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>
Laurent Aimar's avatar
Laurent Aimar committed
33

34 35 36
#include "x264.h"
#include "common/bs.h"
#include "common/set.h"
Laurent Aimar's avatar
Laurent Aimar committed
37 38 39 40 41 42 43 44 45

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;
46
    sps->i_level_idc = param->i_level_idc;
Laurent Aimar's avatar
Laurent Aimar committed
47 48 49 50 51 52

    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 */
53
    while( (1 << sps->i_log2_max_frame_num) <= param->i_keyint_max )
Laurent Aimar's avatar
Laurent Aimar committed
54 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
    {
        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;
        }
    }

80 81 82
    sps->i_num_ref_frames = param->i_frame_reference;
    if( param->i_bframe )
        sps->i_num_ref_frames++; /* for 2 ref in B */
Laurent Aimar's avatar
Laurent Aimar committed
83 84 85 86 87 88
    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;
89 90
    if( sps->b_frame_mbs_only == 0 ||
        !(param->analyse.inter & X264_ANALYSE_PSUB8x8) )
Laurent Aimar's avatar
Laurent Aimar committed
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
    {
        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
112
    sps->b_vui = 0;
113
    sps->vui.b_aspect_ratio_info_present = 0;
Måns Rullgård's avatar
Måns Rullgård committed
114

Laurent Aimar's avatar
Laurent Aimar committed
115 116
    if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
    {
117 118 119
        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
120
    }
Måns Rullgård's avatar
Måns Rullgård committed
121 122 123
    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
124
    {
Måns Rullgård's avatar
Måns Rullgård committed
125
        sps->vui.b_timing_info_present = 1;
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
126 127
        /* The standard is confusing me, but this seems to work best
           with other encoders */
Måns Rullgård's avatar
Måns Rullgård committed
128
        sps->vui.i_num_units_in_tick = param->i_fps_den;
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
129
        sps->vui.i_time_scale = param->i_fps_num;
Måns Rullgård's avatar
Måns Rullgård committed
130
        sps->vui.b_fixed_frame_rate = 1;
Laurent Aimar's avatar
Laurent Aimar committed
131
    }
Måns Rullgård's avatar
Måns Rullgård committed
132
    sps->b_vui |= sps->vui.b_timing_info_present;
Laurent Aimar's avatar
Laurent Aimar committed
133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190
}


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
191 192 193 194 195
        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
196
            {
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213
                { 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
            {
214
                bs_write( s, 8, 255);   /* aspect_ratio_idc (extented) */
Måns Rullgård's avatar
Bugfix.  
Måns Rullgård committed
215 216 217 218
                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
219 220 221 222 223 224 225 226 227 228

        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
229 230 231 232 233 234 235 236 237

        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
238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379
        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 */
        bs_write1( s, 0 );      /* bitstream_restriction_flag */
    }

    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;
    pps->b_weighted_bipred = 0;

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

    pps->i_chroma_qp_index_offset = 0;
#if 0
    if( !param->b_deblocking_filter )
    {
        pps->b_deblocking_filter_control = 1;
    }
    else
    {
        pps->b_deblocking_filter_control = 1;
    }
#endif
    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 );
}