1 /* 2 * Common AAC and AC-3 parser prototypes 3 * Copyright (c) 2003 Fabrice Bellard 4 * Copyright (c) 2003 Michael Niedermayer 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23 #ifndef AVCODEC_AAC_AC3_PARSER_H 24 #define AVCODEC_AAC_AC3_PARSER_H 25 26 #include <stdint.h> 27 #include "avcodec.h" 28 #include "parser.h" 29 30 typedef enum { 31 AAC_AC3_PARSE_ERROR_SYNC = -0x1030c0a, 32 AAC_AC3_PARSE_ERROR_BSID = -0x2030c0a, 33 AAC_AC3_PARSE_ERROR_SAMPLE_RATE = -0x3030c0a, 34 AAC_AC3_PARSE_ERROR_FRAME_SIZE = -0x4030c0a, 35 AAC_AC3_PARSE_ERROR_FRAME_TYPE = -0x5030c0a, 36 AAC_AC3_PARSE_ERROR_CRC = -0x6030c0a, 37 AAC_AC3_PARSE_ERROR_CHANNEL_CFG = -0x7030c0a, 38 } AACAC3ParseError; 39 40 typedef struct AACAC3ParseContext { 41 ParseContext pc; 42 int frame_size; 43 int header_size; 44 int (*sync)(uint64_t state, struct AACAC3ParseContext *hdr_info, 45 int *need_next_header, int *new_frame_start); 46 47 int channels; 48 int sample_rate; 49 int bit_rate; 50 int samples; 51 uint64_t channel_layout; 52 int service_type; 53 54 int remaining_size; 55 uint64_t state; 56 57 int need_next_header; 58 int frame_number; 59 enum AVCodecID codec_id; 60 } AACAC3ParseContext; 61 62 int ff_aac_ac3_parse(AVCodecParserContext *s1, 63 AVCodecContext *avctx, 64 const uint8_t **poutbuf, int *poutbuf_size, 65 const uint8_t *buf, int buf_size); 66 67 #endif /* AVCODEC_AAC_AC3_PARSER_H */ 68