1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include "config.h"
20
21#include <stddef.h>
22#include <stdint.h>
23
24#include "adts_header.h"
25#include "adts_parser.h"
26
27int av_adts_header_parse(const uint8_t *buf, uint32_t *samples, uint8_t *frames)
28{
29#if CONFIG_ADTS_HEADER
30    GetBitContext gb;
31    AACADTSHeaderInfo hdr;
32    int err = init_get_bits8(&gb, buf, AV_AAC_ADTS_HEADER_SIZE);
33    if (err < 0)
34        return err;
35    err = ff_adts_header_parse(&gb, &hdr);
36    if (err < 0)
37        return err;
38    *samples = hdr.samples;
39    *frames  = hdr.num_aac_frames;
40    return 0;
41#else
42    return AVERROR(ENOSYS);
43#endif
44}
45
46int avpriv_adts_header_parse(AACADTSHeaderInfo **phdr, const uint8_t *buf, size_t size)
47{
48#if CONFIG_ADTS_HEADER
49    int ret = 0;
50    GetBitContext gb;
51
52    if (!phdr || !buf || size < AV_AAC_ADTS_HEADER_SIZE)
53        return AVERROR_INVALIDDATA;
54
55    *phdr = av_mallocz(sizeof(AACADTSHeaderInfo));
56    if (!*phdr)
57        return AVERROR(ENOMEM);
58
59    ret = init_get_bits8(&gb, buf, AV_AAC_ADTS_HEADER_SIZE);
60    if (ret < 0) {
61        av_freep(phdr);
62        return ret;
63    }
64
65    ret = ff_adts_header_parse(&gb, *phdr);
66    if (ret < 0) {
67        av_freep(phdr);
68        return ret;
69    }
70
71    return 0;
72#else
73    return AVERROR(ENOSYS);
74#endif
75}
76