mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.8 KiB
50 lines
1.8 KiB
/* |
|
* AAC ADTS header decoding prototypes and structures |
|
* Copyright (c) 2003 Fabrice Bellard |
|
* Copyright (c) 2003 Michael Niedermayer |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#ifndef AVCODEC_ADTS_HEADER_H |
|
#define AVCODEC_ADTS_HEADER_H |
|
|
|
#include "get_bits.h" |
|
|
|
typedef struct AACADTSHeaderInfo { |
|
uint32_t sample_rate; |
|
uint32_t samples; |
|
uint32_t bit_rate; |
|
uint8_t crc_absent; |
|
uint8_t object_type; |
|
uint8_t sampling_index; |
|
uint8_t chan_config; |
|
uint8_t num_aac_frames; |
|
} AACADTSHeaderInfo; |
|
|
|
/** |
|
* Parse the ADTS frame header to the end of the variable header, which is |
|
* the first 54 bits. |
|
* @param[in] gbc BitContext containing the first 54 bits of the frame. |
|
* @param[out] hdr Pointer to struct where header info is written. |
|
* @return Returns 0 on success, -1 if there is a sync word mismatch, |
|
* -2 if the version element is invalid, -3 if the sample rate |
|
* element is invalid, or -4 if the bit rate element is invalid. |
|
*/ |
|
int ff_adts_header_parse(GetBitContext *gbc, AACADTSHeaderInfo *hdr); |
|
|
|
#endif /* AVCODEC_ADTS_HEADER_H */
|
|
|