workbench/devs/AHI/Drivers/Filesave/FileFormats.h

   1 #ifndef AHI_Drivers_Filesave_FileFormats_h
   2 #define AHI_Drivers_Filesave_FileFormats_h
   3
   4 #include <exec/types.h>
   5
   6 #if !defined( __mc68000__)
   7 #pragma pack(2)
   8 #endif
   9
  10 /******************************************************************************
  11 ** 8SVX defs ******************************************************************
  12 ******************************************************************************/
  13
  14 /* From Jerry Morrison and Steve Hayes, Electronic Arts */
  15
  16 #define ID_8SVX      MAKE_ID('8', 'S', 'V', 'X')
  17 #define ID_VHDR      MAKE_ID('V', 'H', 'D', 'R')
  18 #define ID_BODY      MAKE_ID('B', 'O', 'D', 'Y')
  19
  20 /* sCompression: Choice of compression algorithm applied to the samples. */
  21 #define sCmpNone       0        /* not compressed */
  22 #define sCmpFibDelta   1        /* Fibonacci-delta encoding (Appendix C) */
  23                                 /* Could be more kinds in the future. */
  24 typedef struct {
  25     ULONG oneShotHiSamples,     /* # samples in the high octave 1-shot part */
  26           repeatHiSamples,      /* # samples in the high octave repeat part */
  27           samplesPerHiCycle;    /* # samples/cycle in high octave, else 0 */
  28     UWORD samplesPerSec;        /* data sampling rate */
  29     UBYTE ctOctave,             /* # of octaves of waveforms */
  30           sCompression;         /* data compression technique used */
  31     Fixed volume;               /* playback nominal volume from 0 to Unity
  32                                  * (full volume). Map this value into
  33                                  * the output hardware's dynamic range.
  34                                  */
  35     } Voice8Header;
  36
  37 /******************************************************************************
  38 ** AIFF and AIFC defs *********************************************************
  39 ******************************************************************************/
  40
  41 /* AIFF and AIFC defines were taken from Olaf `Olsen' Barthel's AIFF DataType. */
  42
  43         // 80 bit IEEE Standard 754 floating point number
  44
  45 typedef struct {
  46         unsigned short  exponent;               // Exponent, bit #15 is sign bit for mantissa
  47         unsigned long   mantissa[2];            // 64 bit mantissa
  48 } extended;
  49
  50         // Audio Interchange Format chunk data
  51
  52 #define ID_AIFF MAKE_ID('A','I','F','F')
  53 #define ID_AIFC MAKE_ID('A','I','F','C')
  54
  55 #define ID_FVER MAKE_ID('F','V','E','R')
  56 #define ID_COMM MAKE_ID('C','O','M','M')
  57 #define ID_SSND MAKE_ID('S','S','N','D')
  58
  59         // "COMM" chunk header
  60
  61 typedef struct {
  62         short           numChannels;            // Number of channels
  63         unsigned long   numSampleFrames;        // Number of sample frames
  64         short           sampleSize;             // Number of bits per sample point
  65         extended        sampleRate;             // Replay rate in samples per second
  66 } CommonChunk;
  67
  68         // The same for "AIFC" type files
  69
  70 #define NO_COMPRESSION MAKE_ID('N','O','N','E') // No sound compression
  71
  72 typedef struct {
  73         short           numChannels;            // Number of channels
  74         unsigned long   numSampleFrames;        // Number of sample frames
  75         short           sampleSize;             // Number of bits per sample point
  76         extended        sampleRate;             // Replay rate in samples per second
  77         unsigned long   compressionType;        // Compression type
  78         char            compressionName[(sizeof("not compressed")+1)&(~1)];
  79 } ExtCommonChunk;
  80
  81
  82         // "SSND" chunk header
  83
  84 typedef struct {
  85         unsigned long   offset,                 // Offset to sound data, for block alignment
  86                         blockSize;              // Size of block data is aligned to
  87 } SampledSoundHeader;
  88
  89         // "FVER" chunk header
  90
  91 typedef struct {
  92         long            timestamp;              // Format version creation date
  93 } FormatVersionHeader;
  94
  95 #define AIFCVersion1 0xA2805140                 // "AIFC" file format version #1
  96
  97
  98 struct AIFCheader {
  99   ULONG                 FORMid;
 100   ULONG                 FORMsize;
 101   ULONG                 AIFCid;
 102
 103   ULONG                 FVERid;
 104   ULONG                 FVERsize;
 105   FormatVersionHeader   FVERchunk;
 106
 107   ULONG                 COMMid;
 108   ULONG                 COMMsize;
 109   ExtCommonChunk        COMMchunk;
 110
 111   ULONG                 SSNDid;
 112   ULONG                 SSNDsize;
 113   SampledSoundHeader    SSNDchunk;
 114 };
 115
 116 struct AIFFheader {
 117   ULONG                 FORMid;
 118   ULONG                 FORMsize;
 119   ULONG                 AIFFid;
 120
 121   ULONG                 COMMid;
 122   ULONG                 COMMsize;
 123   CommonChunk           COMMchunk;
 124
 125   ULONG                 SSNDid;
 126   ULONG                 SSNDsize;
 127   SampledSoundHeader    SSNDchunk;
 128 };
 129
 130 struct EIGHTSVXheader {
 131   ULONG                 FORMid;
 132   ULONG                 FORMsize;
 133   ULONG                 EIGHTSVXid;
 134
 135   ULONG                 VHDRid;
 136   ULONG                 VHDRsize;
 137   Voice8Header          VHDRchunk;
 138
 139   ULONG                 BODYid;
 140   ULONG                 BODYsize;
 141 };
 142
 143
 144 /******************************************************************************
 145 ** WAV file format ************************************************************
 146 ******************************************************************************/
 147
 148 #define ID_RIFF MAKE_ID('R','I','F','F')
 149 #define ID_WAVE MAKE_ID('W','A','V','E')
 150 #define ID_fmt  MAKE_ID('f','m','t',' ')
 151 #define ID_data MAKE_ID('d','a','t','a')
 152
 153
 154 typedef struct {
 155         unsigned short  formatTag;
 156         unsigned short  numChannels;
 157         unsigned long   samplesPerSec;
 158         unsigned long   avgBytesPerSec;
 159         unsigned short  blockAlign;
 160         unsigned short  bitsPerSample;
 161 } FormatChunk;
 162
 163 #define WAVE_PCM 1
 164
 165
 166 struct WAVEheader {
 167   ULONG                 FORMid;
 168   ULONG                 FORMsize;
 169   ULONG                 WAVEid;
 170
 171   ULONG                 FORMATid;
 172   ULONG                 FORMATsize;
 173   FormatChunk           FORMATchunk;
 174
 175   ULONG                 DATAid;
 176   ULONG                 DATAsize;
 177 };
 178
 179 /******************************************************************************
 180 ** S16 defs *******************************************************************
 181 ******************************************************************************/
 182
 183 #include "Studio16file.h"
 184
 185 #if !defined( __mc68000__)
 186 #pragma pack()
 187 #endif
 188
 189 #endif /* AHI_Drivers_Filesave_FileFormats_h */