spicetools/hooks/audio/implementations/wave_out.h

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2024-08-28 15:10:34 +00:00
#pragma once
#include <mmdeviceapi.h>
#include <mmsystem.h>
#include "backend.h"
#define WASAPI_BUFFER_COUNT 3
#define TARGET_REFTIME (100000) // 10 ms
struct WaveOutBackend final : AudioBackend {
public:
~WaveOutBackend() final = default;
HRESULT init(uint32_t buffer_size);
const WAVEFORMATEXTENSIBLE &format() const noexcept override;
HRESULT on_initialize(
AUDCLNT_SHAREMODE *ShareMode,
DWORD *StreamFlags,
REFERENCE_TIME *hnsBufferDuration,
REFERENCE_TIME *hnsPeriodicity,
const WAVEFORMATEX *pFormat,
LPCGUID AudioSessionGuid) noexcept override;
HRESULT on_get_buffer_size(uint32_t *buffer_frames) noexcept override;
HRESULT on_get_stream_latency(REFERENCE_TIME *latency) noexcept override;
HRESULT on_get_current_padding(std::optional<uint32_t> &padding_frames) noexcept override;
HRESULT on_is_format_supported(
AUDCLNT_SHAREMODE *ShareMode,
const WAVEFORMATEX *pFormat,
WAVEFORMATEX **ppClosestMatch) noexcept override;
HRESULT on_get_mix_format(WAVEFORMATEX **pp_device_format) noexcept override;
HRESULT on_get_device_period(
REFERENCE_TIME *default_device_period,
REFERENCE_TIME *minimum_device_period) override;
HRESULT on_start() noexcept override;
HRESULT on_stop() noexcept override;
HRESULT on_set_event_handle(HANDLE *event_handle) override;
HRESULT on_get_buffer(uint32_t num_frames_requested, BYTE **ppData) override;
HRESULT on_release_buffer(uint32_t num_frames_written, DWORD dwFlags) override;
private:
WrappedIAudioClient *client;
bool initialized = false;
HANDLE relay_event = nullptr;
HANDLE dispatcher_event = nullptr;
HWAVEOUT handle = nullptr;
WAVEHDR hdrs[WASAPI_BUFFER_COUNT] {};
BYTE *active_sound_buffer = nullptr;
};