12ded9cd85
Most users of ff_adts_header_parse() don't already have an opened GetBitContext for the header, so add a convenience function for them. Also use a forward declaration of GetBitContext in adts_header.h as this avoids (implicit) inclusion of get_bits.h in some of the users that now no longer use a GetBitContext of their own. Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
/*
|
|
* 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 "config.h"
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
|
|
#include "libavutil/error.h"
|
|
#include "libavutil/mem.h"
|
|
#include "adts_header.h"
|
|
#include "adts_parser.h"
|
|
|
|
int av_adts_header_parse(const uint8_t *buf, uint32_t *samples, uint8_t *frames)
|
|
{
|
|
#if CONFIG_ADTS_HEADER
|
|
uint8_t tmpbuf[AV_AAC_ADTS_HEADER_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
|
|
AACADTSHeaderInfo hdr;
|
|
int err;
|
|
if (!buf)
|
|
return AVERROR(EINVAL);
|
|
memcpy(tmpbuf, buf, AV_AAC_ADTS_HEADER_SIZE);
|
|
err = ff_adts_header_parse_buf(tmpbuf, &hdr);
|
|
if (err < 0)
|
|
return err;
|
|
*samples = hdr.samples;
|
|
*frames = hdr.num_aac_frames;
|
|
return 0;
|
|
#else
|
|
return AVERROR(ENOSYS);
|
|
#endif
|
|
}
|
|
|
|
int avpriv_adts_header_parse(AACADTSHeaderInfo **phdr, const uint8_t *buf, size_t size)
|
|
{
|
|
#if CONFIG_ADTS_HEADER
|
|
int ret = 0;
|
|
int allocated = 0;
|
|
|
|
if (!phdr || !buf || size < AV_AAC_ADTS_HEADER_SIZE)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (!*phdr) {
|
|
allocated = 1;
|
|
*phdr = av_mallocz(sizeof(AACADTSHeaderInfo));
|
|
}
|
|
if (!*phdr)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ret = ff_adts_header_parse_buf(buf, *phdr);
|
|
if (ret < 0) {
|
|
if (allocated)
|
|
av_freep(phdr);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
#else
|
|
return AVERROR(ENOSYS);
|
|
#endif
|
|
}
|