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