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monitord / lame-3.97 / frontend / .svn / text-base / get_audio.h.svn-base
@root root on 23 Jan 2012 3 KB Migration from SVN revision 455
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  1. /*
  2.  *	Get Audio routines include file
  3.  *
  4.  *	Copyright (c) 1999 Albert L Faber
  5.  *
  6.  * This library is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Library General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2 of the License, or (at your option) any later version.
  10.  *
  11.  * This library is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
  14.  * Library General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Library General Public
  17.  * License along with this library; if not, write to the
  18.  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19.  * Boston, MA 02111-1307, USA.
  20.  */
  21.  
  22.  
  23. #ifndef LAME_GET_AUDIO_H
  24. #define LAME_GET_AUDIO_H
  25. #include "lame.h"
  26. #include <stdio.h>
  27.  
  28. typedef enum sound_file_format_e {
  29.   sf_unknown, 
  30.   sf_raw, 
  31.   sf_wave, 
  32.   sf_aiff, 
  33.   sf_mp1,  /* MPEG Layer 1, aka mpg */
  34.   sf_mp2,  /* MPEG Layer 2 */
  35.   sf_mp3,  /* MPEG Layer 3 */
  36.   sf_ogg 
  37. } sound_file_format;
  38.  
  39.  
  40.  
  41.  
  42. FILE *init_outfile ( char *outPath, int decode );
  43. void init_infile(lame_global_flags *, char *inPath);
  44. void close_infile(void);
  45. int get_audio(lame_global_flags * const gfp, int buffer[2][1152]);
  46. int get_audio16(lame_global_flags * const gfp, short buffer[2][1152]);
  47. int WriteWaveHeader(FILE * const fp, const int pcmbytes,
  48. 		    const int freq, const int channels, const int bits);
  49.  
  50.  
  51.  
  52. /* the simple lame decoder */
  53. /* After calling lame_init(), lame_init_params() and
  54.  * init_infile(), call this routine to read the input MP3 file 
  55.  * and output .wav data to the specified file pointer
  56.  * lame_decoder will ignore the first 528 samples, since these samples
  57.  * represent the mpglib decoding delay (and are all 0).  
  58.  *skip = number of additional
  59.  * samples to skip, to (for example) compensate for the encoder delay,
  60.  * only used when decoding mp3 
  61. */
  62. int lame_decoder(lame_global_flags *gfp,FILE *outf,int skip, char *inPath, char *outPath);
  63.  
  64.  
  65.  
  66. void SwapBytesInWords( short *loc, int words );
  67.  
  68.  
  69.  
  70. #ifdef LIBSNDFILE
  71.  
  72. #include "sndfile.h"
  73.  
  74.  
  75. #else
  76. /*****************************************************************
  77.  * LAME/ISO built in audio file I/O routines 
  78.  *******************************************************************/
  79. #include "portableio.h"
  80.  
  81.  
  82. typedef struct  blockAlign_struct {
  83.     unsigned long   offset;
  84.     unsigned long   blockSize;
  85. } blockAlign;
  86.  
  87. typedef struct  IFF_AIFF_struct {
  88.     short           numChannels;
  89.     unsigned long   numSampleFrames;
  90.     short           sampleSize;
  91.     double          sampleRate;
  92.     unsigned long   sampleType;
  93.     blockAlign      blkAlgn;
  94. } IFF_AIFF;
  95.  
  96. extern int            aiff_read_headers(FILE*, IFF_AIFF*);
  97. extern int            aiff_seek_to_sound_data(FILE*);
  98. extern int            aiff_write_headers(FILE*, IFF_AIFF*);
  99. extern int parse_wavheader(void);
  100. extern int parse_aiff(const char fn[]);
  101. extern void   aiff_check(const char*, IFF_AIFF*, int*);
  102.  
  103.  
  104.  
  105. #endif	/* ifdef LIBSNDFILE */
  106. #endif	/* ifndef LAME_GET_AUDIO_H */
  107.