blob: 9d95d2d5cd33f81bcfdfd8ac2aff5255b16a6ac3
| 1 | /* |
| 2 | * libmad - MPEG audio decoder library |
| 3 | * Copyright (C) 2000-2004 Underbit Technologies, Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | * |
| 19 | * $Id: decoder.h,v 1.17 2004/01/23 09:41:32 rob Exp $ |
| 20 | */ |
| 21 | |
| 22 | # ifndef LIBMAD_DECODER_H |
| 23 | # define LIBMAD_DECODER_H |
| 24 | |
| 25 | # include "stream.h" |
| 26 | # include "frame.h" |
| 27 | # include "synth.h" |
| 28 | |
| 29 | enum mad_decoder_mode { |
| 30 | MAD_DECODER_MODE_SYNC = 0, |
| 31 | MAD_DECODER_MODE_ASYNC |
| 32 | }; |
| 33 | |
| 34 | enum mad_flow { |
| 35 | MAD_FLOW_CONTINUE = 0x0000, /* continue normally */ |
| 36 | MAD_FLOW_STOP = 0x0010, /* stop decoding normally */ |
| 37 | MAD_FLOW_BREAK = 0x0011, /* stop decoding and signal an error */ |
| 38 | MAD_FLOW_IGNORE = 0x0020 /* ignore the current frame */ |
| 39 | }; |
| 40 | |
| 41 | struct mad_decoder { |
| 42 | enum mad_decoder_mode mode; |
| 43 | |
| 44 | int options; |
| 45 | |
| 46 | struct { |
| 47 | long pid; |
| 48 | int in; |
| 49 | int out; |
| 50 | } async; |
| 51 | |
| 52 | struct { |
| 53 | struct mad_stream stream; |
| 54 | struct mad_frame frame; |
| 55 | struct mad_synth synth; |
| 56 | } *sync; |
| 57 | |
| 58 | void *cb_data; |
| 59 | |
| 60 | enum mad_flow(*input_func)(void *, struct mad_stream *); |
| 61 | enum mad_flow(*header_func)(void *, struct mad_header const *); |
| 62 | enum mad_flow(*filter_func)(void *, |
| 63 | struct mad_stream const *, struct mad_frame *); |
| 64 | enum mad_flow(*output_func)(void *, |
| 65 | struct mad_header const *, struct mad_pcm *); |
| 66 | enum mad_flow(*error_func)(void *, struct mad_stream *, struct mad_frame *); |
| 67 | enum mad_flow(*message_func)(void *, void *, unsigned int *); |
| 68 | }; |
| 69 | |
| 70 | void mad_decoder_init(struct mad_decoder *, void *, |
| 71 | enum mad_flow(*)(void *, struct mad_stream *), |
| 72 | enum mad_flow(*)(void *, struct mad_header const *), |
| 73 | enum mad_flow(*)(void *, |
| 74 | struct mad_stream const *, |
| 75 | struct mad_frame *), |
| 76 | enum mad_flow(*)(void *, |
| 77 | struct mad_header const *, |
| 78 | struct mad_pcm *), |
| 79 | enum mad_flow(*)(void *, |
| 80 | struct mad_stream *, |
| 81 | struct mad_frame *), |
| 82 | enum mad_flow(*)(void *, void *, unsigned int *)); |
| 83 | int mad_decoder_finish(struct mad_decoder *); |
| 84 | |
| 85 | # define mad_decoder_options(decoder, opts) \ |
| 86 | ((void) ((decoder)->options = (opts))) |
| 87 | |
| 88 | int mad_decoder_run(struct mad_decoder *, enum mad_decoder_mode); |
| 89 | int mad_decoder_message(struct mad_decoder *, void *, unsigned int *); |
| 90 | |
| 91 | # endif |
| 92 |