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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2024 Members of the Gmerlin project
* http://github.com/bplaum
*
* 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <stdlib.h>
#include <string.h>
#include <config.h>
#include <avdec_private.h>
#include <parser.h>
#include <adts_header.h>
#define HEADER_BYTES 4
static int find_frame_boundary_adts(bgav_packet_parser_t * parser, int * skip)
{
bgav_adts_header_t h;
int i;
for(i = parser->buf.pos; i < parser->buf.len - HEADER_BYTES; i++)
{
if(bgav_adts_header_read(parser->buf.buf + i, &h))
{
parser->buf.pos = i;
*skip = h.frame_bytes;
return 1;
}
}
parser->buf.pos = parser->buf.len - HEADER_BYTES;
return 0;
}
static int parse_frame_adts(bgav_packet_parser_t * parser, gavl_packet_t * p)
{
bgav_adts_header_t h;
if(!bgav_adts_header_read(p->buf.buf, &h))
return 0;
if(!(parser->parser_flags & PARSER_HAS_HEADER))
bgav_adts_header_get_format(&h, parser->afmt);
p->duration = parser->afmt->samples_per_frame * h.num_blocks;
return 1;
}
void bgav_packet_parser_init_adts(bgav_packet_parser_t * parser)
{
parser->parse_frame = parse_frame_adts;
parser->find_frame_boundary = find_frame_boundary_adts;
}
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