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101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
#ifndef LIBXMP_LOADERS_XM_H
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#define LIBXMP_LOADERS_XM_H
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#define XM_EVENT_PACKING 0x80
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#define XM_EVENT_PACK_MASK 0x7f
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#define XM_EVENT_NOTE_FOLLOWS 0x01
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#define XM_EVENT_INSTRUMENT_FOLLOWS 0x02
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#define XM_EVENT_VOLUME_FOLLOWS 0x04
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#define XM_EVENT_FXTYPE_FOLLOWS 0x08
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#define XM_EVENT_FXPARM_FOLLOWS 0x10
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#define XM_LINEAR_FREQ 0x01
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#define XM_LOOP_MASK 0x03
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#define XM_LOOP_NONE 0
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#define XM_LOOP_FORWARD 1
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#define XM_LOOP_PINGPONG 2
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#define XM_SAMPLE_16BIT 0x10
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#define XM_ENVELOPE_ON 0x01
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#define XM_ENVELOPE_SUSTAIN 0x02
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#define XM_ENVELOPE_LOOP 0x04
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#define XM_LINEAR_PERIOD_MODE 0x01
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struct xm_file_header {
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uint8 id[17]; /* ID text: "Extended module: " */
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uint8 name[20]; /* Module name, padded with zeroes */
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uint8 doseof; /* 0x1a */
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uint8 tracker[20]; /* Tracker name */
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uint16 version; /* Version number, minor-major */
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uint32 headersz; /* Header size */
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uint16 songlen; /* Song length (in patten order table) */
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uint16 restart; /* Restart position */
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uint16 channels; /* Number of channels (2,4,6,8,10,...,32) */
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uint16 patterns; /* Number of patterns (max 256) */
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uint16 instruments; /* Number of instruments (max 128) */
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uint16 flags; /* bit 0: 0=Amiga freq table, 1=Linear */
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uint16 tempo; /* Default tempo */
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uint16 bpm; /* Default BPM */
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uint8 order[256]; /* Pattern order table */
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};
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struct xm_pattern_header {
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uint32 length; /* Pattern header length */
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uint8 packing; /* Packing type (always 0) */
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uint16 rows; /* Number of rows in pattern (1..256) */
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uint16 datasize; /* Packed patterndata size */
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};
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struct xm_instrument_header {
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uint32 size; /* Instrument size */
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uint8 name[22]; /* Instrument name */
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uint8 type; /* Instrument type (always 0) */
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uint16 samples; /* Number of samples in instrument */
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uint32 sh_size; /* Sample header size */
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};
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struct xm_instrument {
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uint8 sample[96]; /* Sample number for all notes */
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uint16 v_env[24]; /* Points for volume envelope */
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uint16 p_env[24]; /* Points for panning envelope */
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uint8 v_pts; /* Number of volume points */
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uint8 p_pts; /* Number of panning points */
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uint8 v_sus; /* Volume sustain point */
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uint8 v_start; /* Volume loop start point */
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uint8 v_end; /* Volume loop end point */
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uint8 p_sus; /* Panning sustain point */
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uint8 p_start; /* Panning loop start point */
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uint8 p_end; /* Panning loop end point */
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uint8 v_type; /* Bit 0: On; 1: Sustain; 2: Loop */
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uint8 p_type; /* Bit 0: On; 1: Sustain; 2: Loop */
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uint8 y_wave; /* Vibrato waveform */
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uint8 y_sweep; /* Vibrato sweep */
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uint8 y_depth; /* Vibrato depth */
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uint8 y_rate; /* Vibrato rate */
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uint16 v_fade; /* Volume fadeout */
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#if 0
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uint8 reserved[22]; /* Reserved; 2 bytes in specs, 22 in 1.04 */
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#endif
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};
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struct xm_sample_header {
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uint32 length; /* Sample length */
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uint32 loop_start; /* Sample loop start */
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uint32 loop_length; /* Sample loop length */
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uint8 volume; /* Volume */
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int8 finetune; /* Finetune (signed byte -128..+127) */
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uint8 type; /* 0=No loop,1=Fwd loop,2=Ping-pong,16-bit */
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uint8 pan; /* Panning (0-255) */
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int8 relnote; /* Relative note number (signed byte) */
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uint8 reserved; /* Reserved */
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uint8 name[22]; /* Sample_name */
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};
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struct xm_event {
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uint8 note; /* Note (0-71, 0 = C-0) */
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uint8 instrument; /* Instrument (0-128) */
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uint8 volume; /* Volume column byte */
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uint8 fx_type; /* Effect type */
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uint8 fx_parm; /* Effect parameter */
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};
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#endif
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