55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
#ifndef MIXER_H
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#define MIXER_H
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struct sound;
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#define MIXER_FLAG_NONE 0x0
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#define MIXER_FLAG_SPATIALIZE 0x1
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#define MIXER_DESC(...) ((struct mixer_desc) { \
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.flags = 0, \
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\
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.volume = 1.0, \
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.speed = 1.0, \
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.looping = false, \
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\
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.pos = V2(0, 0), \
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\
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__VA_ARGS__ \
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})
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struct mixer_desc {
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u32 flags;
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f32 volume; /* 0 -> 1.0+ */
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f32 speed; /* 0 -> 1.0+ */
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b32 looping;
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/* MIXER_FLAG_SPATIALIZE */
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struct v2 pos;
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};
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struct mixer_track_handle {
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u64 gen;
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void *data;
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};
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/* Stereo mix of 32 bit float samples */
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struct mixed_pcm_f32 {
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u64 count;
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f32 *samples;
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};
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void mixer_startup(void);
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/* Interface */
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struct mixer_track_handle mixer_play(struct sound *sound);
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struct mixer_track_handle mixer_play_ex(struct sound *sound, struct mixer_desc desc);
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struct mixer_desc mixer_track_get(struct mixer_track_handle handle);
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void mixer_track_set(struct mixer_track_handle handle, struct mixer_desc desc);
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void mixer_set_listener(struct v2 pos, struct v2 dir);
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/* Mixing */
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struct mixed_pcm_f32 mixer_update(struct arena *arena, u64 frame_request_count);
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void mixer_advance(u64 frames_written_count);
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#endif
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