ref: dfb4b522830edab8f3856289d326d6cf5e930644
dir: /sys/src/cmd/audio/mp3enc/get_audio.h/
/*
* Get Audio routines include file
*
* Copyright (c) 1999 Albert L Faber
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef LAME_GET_AUDIO_H
#define LAME_GET_AUDIO_H
typedef enum sound_file_format_e {
sf_unknown,
sf_raw,
sf_wave,
sf_aiff,
sf_mp1, /* MPEG Layer 1, aka mpg */
sf_mp2, /* MPEG Layer 2 */
sf_mp3, /* MPEG Layer 3 */
sf_ogg
} sound_file_format;
FILE* init_outfile ( char *outPath, int decode );
void init_infile(lame_global_flags *, char *inPath);
void close_infile(void);
int get_audio(lame_global_flags *gfp,short buffer[2][1152]);
/* the simple lame decoder */
/* After calling lame_init(), lame_init_params() and
* init_infile(), call this routine to read the input MP3 file
* and output .wav data to the specified file pointer
* lame_decoder will ignore the first 528 samples, since these samples
* represent the mpglib decoding delay (and are all 0).
*skip = number of additional
* samples to skip, to (for example) compensate for the encoder delay,
* only used when decoding mp3
*/
int lame_decoder(lame_global_flags *gfp,FILE *outf,int skip, char *inPath, char *outPath);
void SwapBytesInWords( short *loc, int words );
#ifdef LIBSNDFILE
#include "sndfile.h"
#else
/*****************************************************************
* LAME/ISO built in audio file I/O routines
*******************************************************************/
#include "portableio.h"
typedef struct blockAlign_struct {
unsigned long offset;
unsigned long blockSize;
} blockAlign;
typedef struct IFF_AIFF_struct {
short numChannels;
unsigned long numSampleFrames;
short sampleSize;
double sampleRate;
unsigned long sampleType;
blockAlign blkAlgn;
} IFF_AIFF;
extern int aiff_read_headers(FILE*, IFF_AIFF*);
extern int aiff_seek_to_sound_data(FILE*);
extern int aiff_write_headers(FILE*, IFF_AIFF*);
extern int parse_wavheader(void);
extern int parse_aiff(const char fn[]);
extern void aiff_check(const char*, IFF_AIFF*, int*);
#endif /* ifdef LIBSNDFILE */
#endif /* ifndef LAME_GET_AUDIO_H */