kaudio_types.h

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#pragma once
 
#include <core_audio_types.h>
#include <defines.h>
#include <identifiers/khandle.h>
#include <math/math_types.h>
 
struct frame_data;
struct kaudio_backend_state;
 
typedef u16 kaudio;
 
// The id representing an invalid kaudio.
#define INVALID_KAUDIO INVALID_ID_U16
 
typedef struct kaudio_instance {
    kaudio base;
    u16 instance_id;
} kaudio_instance;
 
typedef struct kaudio_backend_config {
    u32 frequency;
    u32 channel_count;
 
    u32 chunk_size;
 
    u32 audio_channel_count;
 
    u16 max_count;
} kaudio_backend_config;
 
typedef struct kaudio_backend_interface {
    struct kaudio_backend_state* internal_state;
 
    b8 (*initialize)(struct kaudio_backend_interface* backend, const kaudio_backend_config* config);
 
    void (*shutdown)(struct kaudio_backend_interface* backend);
 
    b8 (*update)(struct kaudio_backend_interface* backend, struct frame_data* p_frame_data);
 
    b8 (*listener_position_set)(struct kaudio_backend_interface* backend, vec3 position);
 
    b8 (*listener_orientation_set)(struct kaudio_backend_interface* backend, vec3 forward, vec3 up);
 
    b8 (*channel_gain_set)(struct kaudio_backend_interface* backend, u8 channel_id, f32 gain);
 
    b8 (*channel_pitch_set)(struct kaudio_backend_interface* backend, u8 channel_id, f32 pitch);
 
    b8 (*channel_position_set)(struct kaudio_backend_interface* backend, u8 channel_id, vec3 position);
 
    b8 (*channel_looping_set)(struct kaudio_backend_interface* backend, u8 channel_id, b8 looping);
 
    b8 (*load)(struct kaudio_backend_interface* backend, i32 channels, u32 sample_rate, u32 total_sample_count, u64 pcm_data_size, i16* pcm_data, b8 is_stream, kaudio audio);
    void (*unload)(struct kaudio_backend_interface* backend, kaudio audio);
 
    // Play whatever is currently bound to the channel.
    b8 (*channel_play)(struct kaudio_backend_interface* backend, u8 channel_id);
    b8 (*channel_play_resource)(struct kaudio_backend_interface* backend, kaudio audio, u16 instance_id, kaudio_space audio_space, u8 channel_id);
 
    b8 (*channel_stop)(struct kaudio_backend_interface* backend, u8 channel_id);
    b8 (*channel_pause)(struct kaudio_backend_interface* backend, u8 channel_id);
    b8 (*channel_resume)(struct kaudio_backend_interface* backend, u8 channel_id);
 
    b8 (*channel_is_playing)(struct kaudio_backend_interface* backend, u8 channel_id);
    b8 (*channel_is_paused)(struct kaudio_backend_interface* backend, u8 channel_id);
    b8 (*channel_is_stopped)(struct kaudio_backend_interface* backend, u8 channel_id);
 
} kaudio_backend_interface;