formats.h (3604B)
1 #ifndef FORMATS_H 2 #define FORMATS_H 1 3 4 #include <endian.h> 5 #include <byteswap.h> 6 7 /* Definitions for .VOC files */ 8 9 #define VOC_MAGIC_STRING "Creative Voice File\x1A" 10 #define VOC_ACTUAL_VERSION 0x010A 11 #define VOC_SAMPLESIZE 8 12 13 #define VOC_MODE_MONO 0 14 #define VOC_MODE_STEREO 1 15 16 #define VOC_DATALEN(bp) ((u_long)(bp->datalen) | \ 17 ((u_long)(bp->datalen_m) << 8) | \ 18 ((u_long)(bp->datalen_h) << 16) ) 19 20 typedef struct voc_header { 21 u_char magic[20]; /* must be MAGIC_STRING */ 22 u_short headerlen; /* Headerlength, should be 0x1A */ 23 u_short version; /* VOC-file version */ 24 u_short coded_ver; /* 0x1233-version */ 25 } VocHeader; 26 27 typedef struct voc_blocktype { 28 u_char type; 29 u_char datalen; /* low-byte */ 30 u_char datalen_m; /* medium-byte */ 31 u_char datalen_h; /* high-byte */ 32 } VocBlockType; 33 34 typedef struct voc_voice_data { 35 u_char tc; 36 u_char pack; 37 } VocVoiceData; 38 39 typedef struct voc_ext_block { 40 u_short tc; 41 u_char pack; 42 u_char mode; 43 } VocExtBlock; 44 45 /* Definitions for Microsoft WAVE format */ 46 47 #if __BYTE_ORDER == __LITTLE_ENDIAN 48 #define COMPOSE_ID(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d)<<24)) 49 #define LE_SHORT(v) (v) 50 #define LE_INT(v) (v) 51 #define BE_SHORT(v) bswap_16(v) 52 #define BE_INT(v) bswap_32(v) 53 #elif __BYTE_ORDER == __BIG_ENDIAN 54 #define COMPOSE_ID(a,b,c,d) ((d) | ((c)<<8) | ((b)<<16) | ((a)<<24)) 55 #define LE_SHORT(v) bswap_16(v) 56 #define LE_INT(v) bswap_32(v) 57 #define BE_SHORT(v) (v) 58 #define BE_INT(v) (v) 59 #else 60 #error "Wrong endian" 61 #endif 62 63 /* Note: the following macros evaluate the parameter v twice */ 64 #define TO_CPU_SHORT(v, be) \ 65 ((be) ? BE_SHORT(v) : LE_SHORT(v)) 66 #define TO_CPU_INT(v, be) \ 67 ((be) ? BE_INT(v) : LE_INT(v)) 68 69 #define WAV_RIFF COMPOSE_ID('R','I','F','F') 70 #define WAV_RIFX COMPOSE_ID('R','I','F','X') 71 #define WAV_WAVE COMPOSE_ID('W','A','V','E') 72 #define WAV_FMT COMPOSE_ID('f','m','t',' ') 73 #define WAV_DATA COMPOSE_ID('d','a','t','a') 74 75 /* WAVE fmt block constants from Microsoft mmreg.h header */ 76 #define WAV_FMT_PCM 0x0001 77 #define WAV_FMT_IEEE_FLOAT 0x0003 78 #define WAV_FMT_DOLBY_AC3_SPDIF 0x0092 79 #define WAV_FMT_EXTENSIBLE 0xfffe 80 81 /* Used with WAV_FMT_EXTENSIBLE format */ 82 #define WAV_GUID_TAG "\x00\x00\x00\x00\x10\x00\x80\x00\x00\xAA\x00\x38\x9B\x71" 83 84 /* it's in chunks like .voc and AMIGA iff, but my source say there 85 are in only in this combination, so I combined them in one header; 86 it works on all WAVE-file I have 87 */ 88 typedef struct { 89 u_int magic; /* 'RIFF' */ 90 u_int length; /* filelen */ 91 u_int type; /* 'WAVE' */ 92 } WaveHeader; 93 94 typedef struct { 95 u_short format; /* see WAV_FMT_* */ 96 u_short channels; 97 u_int sample_fq; /* frequence of sample */ 98 u_int byte_p_sec; 99 u_short byte_p_spl; /* samplesize; 1 or 2 bytes */ 100 u_short bit_p_spl; /* 8, 12 or 16 bit */ 101 } WaveFmtBody; 102 103 typedef struct { 104 WaveFmtBody format; 105 u_short ext_size; 106 u_short bit_p_spl; 107 u_int channel_mask; 108 u_short guid_format; /* WAV_FMT_* */ 109 u_char guid_tag[14]; /* WAV_GUID_TAG */ 110 } WaveFmtExtensibleBody; 111 112 typedef struct { 113 u_int type; /* 'data' */ 114 u_int length; /* samplecount */ 115 } WaveChunkHeader; 116 117 /* Definitions for Sparc .au header */ 118 119 #define AU_MAGIC COMPOSE_ID('.','s','n','d') 120 121 #define AU_FMT_ULAW 1 122 #define AU_FMT_LIN8 2 123 #define AU_FMT_LIN16 3 124 125 typedef struct au_header { 126 u_int magic; /* '.snd' */ 127 u_int hdr_size; /* size of header (min 24) */ 128 u_int data_size; /* size of data */ 129 u_int encoding; /* see to AU_FMT_XXXX */ 130 u_int sample_rate; /* sample rate */ 131 u_int channels; /* number of channels (voices) */ 132 } AuHeader; 133 134 #endif /* FORMATS */