122 lines
4.2 KiB
C
Executable file
122 lines
4.2 KiB
C
Executable file
/*
|
|
* HEVC Parameter Set encoding
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "golomb.h"
|
|
#include "hevc_ps.h"
|
|
#include "put_bits.h"
|
|
|
|
static void write_ptl_layer(PutBitContext *pb, PTLCommon *ptl)
|
|
{
|
|
int i;
|
|
|
|
put_bits(pb, 2, ptl->profile_space);
|
|
put_bits(pb, 1, ptl->tier_flag);
|
|
put_bits(pb, 5, ptl->profile_idc);
|
|
for (i = 0; i < 32; i++)
|
|
put_bits(pb, 1, ptl->profile_compatibility_flag[i]);
|
|
put_bits(pb, 1, ptl->progressive_source_flag);
|
|
put_bits(pb, 1, ptl->interlaced_source_flag);
|
|
put_bits(pb, 1, ptl->non_packed_constraint_flag);
|
|
put_bits(pb, 1, ptl->frame_only_constraint_flag);
|
|
put_bits32(pb, 0); // reserved
|
|
put_bits(pb, 12, 0); // reserved
|
|
}
|
|
|
|
static void write_ptl(PutBitContext *pb, PTL *ptl, int max_num_sub_layers)
|
|
{
|
|
int i;
|
|
|
|
write_ptl_layer(pb, &ptl->general_ptl);
|
|
put_bits(pb, 8, ptl->general_ptl.level_idc);
|
|
|
|
for (i = 0; i < max_num_sub_layers - 1; i++) {
|
|
put_bits(pb, 1, ptl->sub_layer_profile_present_flag[i]);
|
|
put_bits(pb, 1, ptl->sub_layer_level_present_flag[i]);
|
|
}
|
|
|
|
if (max_num_sub_layers > 1)
|
|
for (i = max_num_sub_layers - 1; i < 8; i++)
|
|
put_bits(pb, 2, 0); // reserved
|
|
|
|
for (i = 0; i < max_num_sub_layers - 1; i++) {
|
|
if (ptl->sub_layer_profile_present_flag[i])
|
|
write_ptl_layer(pb, &ptl->sub_layer_ptl[i]);
|
|
if (ptl->sub_layer_level_present_flag[i])
|
|
put_bits(pb, 8, ptl->sub_layer_ptl[i].level_idc);
|
|
}
|
|
}
|
|
|
|
int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
|
|
uint8_t *buf, int buf_size)
|
|
{
|
|
PutBitContext pb;
|
|
int i, data_size;
|
|
|
|
init_put_bits(&pb, buf, buf_size);
|
|
put_bits(&pb, 4, id);
|
|
put_bits(&pb, 2, 3); // reserved
|
|
put_bits(&pb, 6, vps->vps_max_layers - 1);
|
|
put_bits(&pb, 3, vps->vps_max_sub_layers - 1);
|
|
put_bits(&pb, 1, vps->vps_temporal_id_nesting_flag);
|
|
put_bits(&pb, 16, 0xffff); // reserved
|
|
|
|
write_ptl(&pb, &vps->ptl, vps->vps_max_sub_layers);
|
|
|
|
put_bits(&pb, 1, vps->vps_sub_layer_ordering_info_present_flag);
|
|
for (i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_layers - 1;
|
|
i < vps->vps_max_sub_layers; i++) {
|
|
set_ue_golomb(&pb, vps->vps_max_dec_pic_buffering[i] - 1);
|
|
set_ue_golomb(&pb, vps->vps_num_reorder_pics[i]);
|
|
set_ue_golomb(&pb, vps->vps_max_latency_increase[i] + 1);
|
|
}
|
|
|
|
put_bits(&pb, 6, vps->vps_max_layer_id);
|
|
set_ue_golomb(&pb, vps->vps_num_layer_sets - 1);
|
|
|
|
if (vps->vps_num_layer_sets > 1) {
|
|
avpriv_report_missing_feature(NULL, "Writing layer_id_included_flag");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
put_bits(&pb, 1, vps->vps_timing_info_present_flag);
|
|
if (vps->vps_timing_info_present_flag) {
|
|
put_bits32(&pb, vps->vps_num_units_in_tick);
|
|
put_bits32(&pb, vps->vps_time_scale);
|
|
put_bits(&pb, 1, vps->vps_poc_proportional_to_timing_flag);
|
|
if (vps->vps_poc_proportional_to_timing_flag)
|
|
set_ue_golomb(&pb, vps->vps_num_ticks_poc_diff_one - 1);
|
|
|
|
set_ue_golomb(&pb, vps->vps_num_hrd_parameters);
|
|
if (vps->vps_num_hrd_parameters) {
|
|
avpriv_report_missing_feature(NULL, "Writing HRD parameters");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
}
|
|
|
|
put_bits(&pb, 1, 0); // extension flag
|
|
|
|
put_bits(&pb, 1, 1); // stop bit
|
|
avpriv_align_put_bits(&pb);
|
|
|
|
data_size = put_bits_count(&pb) / 8;
|
|
flush_put_bits(&pb);
|
|
|
|
return data_size;
|
|
}
|