streo mp3 player see: http://mbed.org/users/okini3939/notebook/I2S_AUDIO
Dependencies: FatFileSystemCpp I2SSlave TLV320 mbed
Fork of madplayer by
stream.h
00001 /* 00002 * libmad - MPEG audio decoder library 00003 * Copyright (C) 2000-2004 Underbit Technologies, Inc. 00004 * 00005 * This program is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU General Public License as published by 00007 * the Free Software Foundation; either version 2 of the License, or 00008 * (at your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with this program; if not, write to the Free Software 00017 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 * 00019 * $Id: stream.h,v 1.1 2010/11/23 20:12:57 andy Exp $ 00020 */ 00021 00022 # ifndef LIBMAD_STREAM_H 00023 # define LIBMAD_STREAM_H 00024 00025 # include "bit.h" 00026 00027 # define MAD_BUFFER_GUARD 8 00028 # define MAD_BUFFER_MDLEN (511 + 2048 + MAD_BUFFER_GUARD) 00029 00030 enum mad_error { 00031 MAD_ERROR_NONE = 0x0000, /* no error */ 00032 00033 MAD_ERROR_BUFLEN = 0x0001, /* input buffer too small (or EOF) */ 00034 MAD_ERROR_BUFPTR = 0x0002, /* invalid (null) buffer pointer */ 00035 00036 MAD_ERROR_NOMEM = 0x0031, /* not enough memory */ 00037 00038 MAD_ERROR_LOSTSYNC = 0x0101, /* lost synchronization */ 00039 MAD_ERROR_BADLAYER = 0x0102, /* reserved header layer value */ 00040 MAD_ERROR_BADBITRATE = 0x0103, /* forbidden bitrate value */ 00041 MAD_ERROR_BADSAMPLERATE = 0x0104, /* reserved sample frequency value */ 00042 MAD_ERROR_BADEMPHASIS = 0x0105, /* reserved emphasis value */ 00043 00044 MAD_ERROR_BADCRC = 0x0201, /* CRC check failed */ 00045 MAD_ERROR_BADBITALLOC = 0x0211, /* forbidden bit allocation value */ 00046 MAD_ERROR_BADSCALEFACTOR = 0x0221, /* bad scalefactor index */ 00047 MAD_ERROR_BADMODE = 0x0222, /* bad bitrate/mode combination */ 00048 MAD_ERROR_BADFRAMELEN = 0x0231, /* bad frame length */ 00049 MAD_ERROR_BADBIGVALUES = 0x0232, /* bad big_values count */ 00050 MAD_ERROR_BADBLOCKTYPE = 0x0233, /* reserved block_type */ 00051 MAD_ERROR_BADSCFSI = 0x0234, /* bad scalefactor selection info */ 00052 MAD_ERROR_BADDATAPTR = 0x0235, /* bad main_data_begin pointer */ 00053 MAD_ERROR_BADPART3LEN = 0x0236, /* bad audio data length */ 00054 MAD_ERROR_BADHUFFTABLE = 0x0237, /* bad Huffman table select */ 00055 MAD_ERROR_BADHUFFDATA = 0x0238, /* Huffman data overrun */ 00056 MAD_ERROR_BADSTEREO = 0x0239 /* incompatible block_type for JS */ 00057 }; 00058 00059 # define MAD_RECOVERABLE(error) ((error) & 0xff00) 00060 00061 struct mad_stream { 00062 unsigned char const *buffer; /* input bitstream buffer */ 00063 unsigned char const *bufend; /* end of buffer */ 00064 unsigned long skiplen; /* bytes to skip before next frame */ 00065 00066 int sync; /* stream sync found */ 00067 unsigned long freerate; /* free bitrate (fixed) */ 00068 00069 unsigned char const *this_frame; /* start of current frame */ 00070 unsigned char const *next_frame; /* start of next frame */ 00071 struct mad_bitptr ptr; /* current processing bit pointer */ 00072 00073 struct mad_bitptr anc_ptr; /* ancillary bits pointer */ 00074 unsigned int anc_bitlen; /* number of ancillary bits */ 00075 00076 unsigned char (*main_data)[MAD_BUFFER_MDLEN]; 00077 /* Layer III main_data() */ 00078 unsigned int md_len; /* bytes in main_data */ 00079 00080 int options; /* decoding options (see below) */ 00081 enum mad_error error; /* error code (see above) */ 00082 }; 00083 00084 enum { 00085 MAD_OPTION_IGNORECRC = 0x0001, /* ignore CRC errors */ 00086 MAD_OPTION_HALFSAMPLERATE = 0x0002 /* generate PCM at 1/2 sample rate */ 00087 # if 0 /* not yet implemented */ 00088 MAD_OPTION_LEFTCHANNEL = 0x0010, /* decode left channel only */ 00089 MAD_OPTION_RIGHTCHANNEL = 0x0020, /* decode right channel only */ 00090 MAD_OPTION_SINGLECHANNEL = 0x0030 /* combine channels */ 00091 # endif 00092 }; 00093 00094 void mad_stream_init(struct mad_stream *); 00095 void mad_stream_finish(struct mad_stream *); 00096 00097 # define mad_stream_options(stream, opts) \ 00098 ((void) ((stream)->options = (opts))) 00099 00100 void mad_stream_buffer(struct mad_stream *, 00101 unsigned char const *, unsigned long); 00102 void mad_stream_skip(struct mad_stream *, unsigned long); 00103 00104 int mad_stream_sync(struct mad_stream *); 00105 00106 char const *mad_stream_errorstr(struct mad_stream const *); 00107 00108 # endif
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