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77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
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/* ibxm/ac mod/xm/s3m replay (c)mumart@gmail.com */
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#ifndef __IBXM_H__
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#define __IBXM_H__
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extern const char *IBXM_VERSION;
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struct data {
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char *buffer;
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int length;
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};
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struct sample {
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char name[ 32 ];
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int loop_start, loop_length;
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short volume, panning, rel_note, fine_tune, *data;
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};
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struct envelope {
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char enabled, sustain, looped, num_points;
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short sustain_tick, loop_start_tick, loop_end_tick;
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short points_tick[ 16 ], points_ampl[ 16 ];
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};
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struct instrument {
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int num_samples, vol_fadeout;
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char name[ 32 ], key_to_sample[ 97 ];
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char vib_type, vib_sweep, vib_depth, vib_rate;
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struct envelope vol_env, pan_env;
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struct sample *samples;
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};
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struct pattern {
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int num_channels, num_rows;
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char *data;
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};
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struct module {
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char name[ 32 ];
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int num_channels, num_instruments;
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int num_patterns, sequence_len, restart_pos;
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int default_gvol, default_speed, default_tempo, c2_rate, gain;
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int linear_periods, fast_vol_slides;
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unsigned char *default_panning, *sequence;
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struct pattern *patterns;
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struct instrument *instruments;
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};
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/* Allocate and initialize a module from the specified data, returns NULL on error.
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Message must point to a 64-character buffer to receive error messages. */
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struct module* module_load( struct data *data, char *message );
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/* Deallocate the specified module. */
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void dispose_module( struct module *module );
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/* Allocate and initialize a replay with the specified module and sampling rate. */
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struct replay* new_replay( struct module *module, int sample_rate, int interpolation );
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/* Deallocate the specified replay. */
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void dispose_replay( struct replay *replay );
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/* Returns the song duration in samples at the current sampling rate. */
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int replay_calculate_duration( struct replay *replay );
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/* Seek to approximately the specified sample position.
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The actual sample position reached is returned. */
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int replay_seek( struct replay *replay, int sample_pos );
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/* Set the pattern in the sequence to play. The tempo is reset to the default. */
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void replay_set_sequence_pos( struct replay *replay, int pos );
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/* Generates audio and returns the number of stereo samples written into mix_buf.
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Individual channels may be excluded using the mute bitmask. */
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int replay_get_audio( struct replay *replay, int *mix_buf, int mute );
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/* Returns the currently playing pattern in the sequence.*/
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int replay_get_sequence_pos( struct replay *replay );
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/* Returns the currently playing row in the pattern. */
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int replay_get_row( struct replay *replay );
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/* Returns the length of the output buffer required by replay_get_audio(). */
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int calculate_mix_buf_len( int sample_rate );
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#endif
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