From 150c9823e71a161e97003849cf8b2f55b21520bd Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Mon, 26 Aug 2013 15:10:18 +0100 Subject: adding ffmpeg specific version --- ffmpeg1/libavcodec/aacadtsdec.h | 54 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 ffmpeg1/libavcodec/aacadtsdec.h (limited to 'ffmpeg1/libavcodec/aacadtsdec.h') diff --git a/ffmpeg1/libavcodec/aacadtsdec.h b/ffmpeg1/libavcodec/aacadtsdec.h new file mode 100644 index 0000000..d0584ef --- /dev/null +++ b/ffmpeg1/libavcodec/aacadtsdec.h @@ -0,0 +1,54 @@ +/* + * AAC ADTS header decoding prototypes and structures + * Copyright (c) 2003 Fabrice Bellard + * Copyright (c) 2003 Michael Niedermayer + * + * 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 + */ + +#ifndef AVCODEC_AACADTSDEC_H +#define AVCODEC_AACADTSDEC_H + +#include +#include "get_bits.h" + +#define AAC_ADTS_HEADER_SIZE 7 + +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 AAC frame header. + * 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 avpriv_aac_parse_header(GetBitContext *gbc, AACADTSHeaderInfo *hdr); + +#endif /* AVCODEC_AACADTSDEC_H */ -- cgit v1.2.3