Libav
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00001 /* 00002 * Common AAC and AC-3 parser prototypes 00003 * Copyright (c) 2003 Fabrice Bellard 00004 * Copyright (c) 2003 Michael Niedermayer 00005 * 00006 * This file is part of FFmpeg. 00007 * 00008 * FFmpeg is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * FFmpeg is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with FFmpeg; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00023 #ifndef AVCODEC_AAC_AC3_PARSER_H 00024 #define AVCODEC_AAC_AC3_PARSER_H 00025 00026 #include <stdint.h> 00027 #include "avcodec.h" 00028 #include "parser.h" 00029 00030 typedef enum { 00031 AAC_AC3_PARSE_ERROR_SYNC = -1, 00032 AAC_AC3_PARSE_ERROR_BSID = -2, 00033 AAC_AC3_PARSE_ERROR_SAMPLE_RATE = -3, 00034 AAC_AC3_PARSE_ERROR_FRAME_SIZE = -4, 00035 AAC_AC3_PARSE_ERROR_FRAME_TYPE = -5, 00036 AAC_AC3_PARSE_ERROR_CRC = -6, 00037 AAC_AC3_PARSE_ERROR_CHANNEL_CFG = -7, 00038 } AACAC3ParseError; 00039 00040 typedef struct AACAC3ParseContext { 00041 ParseContext pc; 00042 int frame_size; 00043 int header_size; 00044 int (*sync)(uint64_t state, struct AACAC3ParseContext *hdr_info, 00045 int *need_next_header, int *new_frame_start); 00046 00047 int channels; 00048 int sample_rate; 00049 int bit_rate; 00050 int samples; 00051 int64_t channel_layout; 00052 00053 int remaining_size; 00054 uint64_t state; 00055 00056 int need_next_header; 00057 enum CodecID codec_id; 00058 } AACAC3ParseContext; 00059 00060 int ff_aac_ac3_parse(AVCodecParserContext *s1, 00061 AVCodecContext *avctx, 00062 const uint8_t **poutbuf, int *poutbuf_size, 00063 const uint8_t *buf, int buf_size); 00064 00065 #endif /* AVCODEC_AAC_AC3_PARSER_H */