1 #ifndef FORMATS_H 2 #define FORMATS_H 1 3 4 #include <byteswap.h> 5 6 /* Definitions for .VOC files */ 7 8 #define VOC_MAGIC_STRING "Creative Voice File\x1A" 9 #define VOC_ACTUAL_VERSION 0x010A 10 #define VOC_SAMPLESIZE 8 11 12 #define VOC_MODE_MONO 0 13 #define VOC_MODE_STEREO 1 14 15 #define VOC_DATALEN(bp) ((u_long)(bp->datalen) | \ 16 ((u_long)(bp->datalen_m) << 8) | \ 17 ((u_long)(bp->datalen_h) << 16) ) 18 19 typedef struct voc_header { 20 u_char magic[20]; /* must be MAGIC_STRING */ 21 u_short headerlen; /* Headerlength, should be 0x1A */ 22 u_short version; /* VOC-file version */ 23 u_short coded_ver; /* 0x1233-version */ 24 } VocHeader; 25 26 typedef struct voc_blocktype { 27 u_char type; 28 u_char datalen; /* low-byte */ 29 u_char datalen_m; /* medium-byte */ 30 u_char datalen_h; /* high-byte */ 31 } VocBlockType; 32 33 typedef struct voc_voice_data { 34 u_char tc; 35 u_char pack; 36 } VocVoiceData; 37 38 typedef struct voc_ext_block { 39 u_short tc; 40 u_char pack; 41 u_char mode; 42 } VocExtBlock; 43 44 /* Definitions for Microsoft WAVE format */ 45 46 #if __BYTE_ORDER == __LITTLE_ENDIAN 47 #define COMPOSE_ID(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24)) 48 #define LE_SHORT(v) (v) 49 #define LE_INT(v) (v) 50 #define BE_SHORT(v) bswap_16(v) 51 #define BE_INT(v) bswap_32(v) 52 #elif __BYTE_ORDER == __BIG_ENDIAN 53 #define COMPOSE_ID(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24)) 54 #define LE_SHORT(v) bswap_16(v) 55 #define LE_INT(v) bswap_32(v) 56 #define BE_SHORT(v) (v) 57 #define BE_INT(v) (v) 58 #else 59 #error "Wrong endian" 60 #endif 61 62 /* Note: the following macros evaluate the parameter v twice */ 63 #define TO_CPU_SHORT(v, be) \ 64 ((be) ? BE_SHORT(v) : LE_SHORT(v)) 65 #define TO_CPU_INT(v, be) \ 66 ((be) ? BE_INT(v) : LE_INT(v)) 67 68 #define WAV_RIFF COMPOSE_ID('R','I','F','F') 69 #define WAV_RIFX COMPOSE_ID('R','I','F','X') 70 #define WAV_WAVE COMPOSE_ID('W','A','V','E') 71 #define WAV_FMT COMPOSE_ID('f','m','t',' ') 72 #define WAV_DATA COMPOSE_ID('d','a','t','a') 73 74 /* WAVE fmt block constants from Microsoft mmreg.h header */ 75 #define WAV_FMT_PCM 0x0001 76 #define WAV_FMT_IEEE_FLOAT 0x0003 77 #define WAV_FMT_DOLBY_AC3_SPDIF 0x0092 78 #define WAV_FMT_EXTENSIBLE 0xfffe 79 80 /* Used with WAV_FMT_EXTENSIBLE format */ 81 #define WAV_GUID_TAG "\x00\x00\x00\x00\x10\x00\x80\x00\x00\xAA\x00\x38\x9B\x71" 82 83 /* it's in chunks like .voc and AMIGA iff, but my source say there 84 are in only in this combination, so I combined them in one header; 85 it works on all WAVE-file I have 86 */ 87 typedef struct { 88 u_int magic; /* 'RIFF' */ 89 u_int length; /* filelen */ 90 u_int type; /* 'WAVE' */ 91 } WaveHeader; 92 93 typedef struct { 94 u_short format; /* see WAV_FMT_* */ 95 u_short channels; 96 u_int sample_fq; /* frequence of sample */ 97 u_int byte_p_sec; 98 u_short byte_p_spl; /* samplesize; 1 or 2 bytes */ 99 u_short bit_p_spl; /* 8, 12 or 16 bit */ 100 } WaveFmtBody; 101 102 typedef struct { 103 WaveFmtBody format; 104 u_short ext_size; 105 u_short bit_p_spl; 106 u_int channel_mask; 107 u_short guid_format; /* WAV_FMT_* */ 108 u_char guid_tag[14]; /* WAV_GUID_TAG */ 109 } WaveFmtExtensibleBody; 110 111 typedef struct { 112 u_int type; /* 'data' */ 113 u_int length; /* samplecount */ 114 } WaveChunkHeader; 115 116 /* Definitions for Sparc .au header */ 117 118 #define AU_MAGIC COMPOSE_ID('.','s','n','d') 119 120 #define AU_FMT_ULAW 1 121 #define AU_FMT_LIN8 2 122 #define AU_FMT_LIN16 3 123 124 typedef struct au_header { 125 u_int magic; /* '.snd' */ 126 u_int hdr_size; /* size of header (min 24) */ 127 u_int data_size; /* size of data */ 128 u_int encoding; /* see to AU_FMT_XXXX */ 129 u_int sample_rate; /* sample rate */ 130 u_int channels; /* number of channels (voices) */ 131 } AuHeader; 132 133 #endif /* FORMATS */ 134