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comparison music2/wavfile.h @ 0:223b71206888

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Initial import
author thib
date Fri, 01 Aug 2008 16:32:45 +0000
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children 3a6aaeab7b4e
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-1:000000000000 0:223b71206888
1 /*
2 * wavfile.h WAV file´ØÏ¢
3 *
4 * Copyright: wavfile.c (c) Erik de Castro Lopo erikd@zip.com.au
5 *
6 * Modified : 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
7 * 1998- <masaki-c@is.aist-nara.ac.jp>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 */
24 #ifndef __WAVEFILE__
25 #define __WAVEFILE__
26
27 #define WW_BADOUTPUTFILE 1
28 #define WW_BADWRITEHEADER 2
29
30 #define WR_BADALLOC 3
31 #define WR_BADSEEK 4
32 #define WR_BADRIFF 5
33 #define WR_BADWAVE 6
34 #define WR_BADFORMAT 7
35 #define WR_BADFORMATSIZE 8
36
37 #define WR_NOTPCMFORMAT 9
38 #define WR_NODATACHUNK 10
39 #define WR_BADFORMATDATA 11
40
41 /*
42 * These values represent values found in/or destined for a
43 * WAV file.
44 */
45 typedef struct {
46 unsigned int SamplingRate; /* Sampling rate in Hz */
47 int Channels; /* Mono or Stereo */
48 unsigned short DataBits; /* Sample bit size (8/12/16) */
49 } WAVINF;
50
51 struct WAVFILE{
52 WAVINF wavinfo; /* WAV file hdr info */
53 WAVFILE(void);
54 static int freq;
55 static int format;
56 static int channels;
57 virtual ~WAVFILE() {};
58 virtual int Read(char* buf, int blksize, int blklen) = 0;
59 virtual void Seek(int count) = 0;
60 static WAVFILE* MakeConverter(WAVFILE* new_reader);
61 };
62
63 struct WAVFILE_Converter : WAVFILE {
64 WAVFILE* original;
65 struct SDL_AudioCVT* cvt;
66 int datasize;
67 char* tmpbuf;
68 int Read(char* buf, int blksize, int blklen);
69 void Seek(int count) { original->Seek(count);}
70 WAVFILE_Converter(WAVFILE* orig, struct SDL_AudioCVT* cvt);
71 ~WAVFILE_Converter();
72 };
73
74 struct WAVFILE_Stream : WAVFILE{
75 char *data; /* real data */
76 char *data_orig;
77 int data_length;
78 FILE* stream;
79 int stream_length;
80 int stream_length_orig;
81 int stream_top;
82 int Read(char* buf, int blksize, int blklen);
83 void Seek(int count);
84 WAVFILE_Stream(FILE* stream, int length);
85 ~WAVFILE_Stream();
86 };
87
88 struct NWAFILE : WAVFILE {
89 int skip_count;
90 FILE* stream;
91 struct NWAData* nwa;
92 char* data;
93 int block_size;
94 int data_len;
95
96 NWAFILE(FILE* stream);
97 ~NWAFILE();
98 void Seek(int count);
99 int Read(char* buf, int blksize, int blklen);
100 static char* ReadAll(FILE* stream, int& size);
101 };
102
103 struct OggFILE : WAVFILE {
104 struct OggFILE_impl* pimpl;
105
106 OggFILE(FILE* stream, int size);
107 ~OggFILE();
108 void Seek(int count);
109 int Read(char* buf, int blksize, int blklen);
110 };
111
112 struct MP3FILE : WAVFILE {
113 struct MP3FILE_impl* pimpl;
114
115 MP3FILE(FILE* stream, int size);
116 ~MP3FILE();
117 void Seek(int count);
118 int Read(char* buf, int blksize, int blklen);
119 };
120
121 #endif /* !__WAVEFILE__ */