78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
#pragma once
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#include <kinc/global.h>
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#include <stdint.h>
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/*! \file audio.h
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\brief Audio2 is a low-level audio-API that allows you to directly provide a stream of audio-samples.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct kinc_a2_buffer_format {
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int channels;
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int samples_per_second;
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int bits_per_sample;
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} kinc_a2_buffer_format_t;
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typedef struct kinc_a2_buffer {
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kinc_a2_buffer_format_t format;
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uint8_t *data;
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int data_size;
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int read_location;
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int write_location;
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} kinc_a2_buffer_t;
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/// <summary>
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/// Initializes the Audio2-API.
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/// </summary>
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KINC_FUNC void kinc_a2_init(void);
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/// <summary>
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/// Sets the callback that's used to provide audio-samples. This is the primary method of operation for Audio2. The callback is expected to write the requested
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/// number of samples into the ring-buffer. The callback is typically called from the system's audio-thread to minimize audio-latency.
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/// </summary>
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/// <param name="kinc_a2_audio_callback">The callback to set</param>
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KINC_FUNC void kinc_a2_set_callback(void (*kinc_a2_audio_callback)(kinc_a2_buffer_t *buffer, int samples));
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/// <summary>
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/// Sets a callback that's called when the system's sample-rate changes.
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/// </summary>
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/// <param name="kinc_a2_sample_rate_callback">The callback to set</param>
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/// <returns></returns>
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KINC_FUNC void kinc_a2_set_sample_rate_callback(void (*kinc_a2_sample_rate_callback)(void));
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/// <summary>
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/// The current sample-rate of the system.
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/// </summary>
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KINC_FUNC extern int kinc_a2_samples_per_second;
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/// <summary>
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/// kinc_a2_update should be called every frame. It is required by some systems to pump their audio-loops but on most systems it is a no-op.
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/// </summary>
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KINC_FUNC void kinc_a2_update(void);
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/// <summary>
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/// Shuts down the Audio2-API.
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/// </summary>
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KINC_FUNC void kinc_a2_shutdown(void);
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#ifdef KINC_IMPLEMENTATION_AUDIO2
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#define KINC_IMPLEMENTATION
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#endif
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#ifdef KINC_IMPLEMENTATION
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int kinc_a2_samples_per_second = 44100;
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// BACKENDS-PLACEHOLDER
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#endif
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#ifdef __cplusplus
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}
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#endif
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