Initial commit for GitHub migration based on spice2x-25-03-03

src/spice2x/hooks/audio/implementations/backend.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <cstdint>
+#include <optional>
+
+#include <windows.h>
+#include <audioclient.h>
+#include <ksmedia.h>
+
+struct WrappedIAudioClient;
+
+struct AudioBackend {
+public:
+    virtual ~AudioBackend() = default;
+
+    [[nodiscard]] virtual const WAVEFORMATEXTENSIBLE &format() const noexcept = 0;
+
+#pragma region IAudioClient
+    virtual HRESULT on_initialize(
+        AUDCLNT_SHAREMODE *ShareMode,
+        DWORD *StreamFlags,
+        REFERENCE_TIME *hnsBufferDuration,
+        REFERENCE_TIME *hnsPeriodicity,
+        const WAVEFORMATEX *pFormat,
+        LPCGUID AudioSessionGuid) = 0;
+
+    virtual HRESULT on_get_buffer_size(uint32_t *buffer_frames) = 0;
+
+    virtual HRESULT on_get_stream_latency(REFERENCE_TIME *latency) = 0;
+
+    virtual HRESULT on_get_current_padding(std::optional<uint32_t> &padding_frames) = 0;
+
+    virtual HRESULT on_is_format_supported(
+        AUDCLNT_SHAREMODE *ShareMode,
+        const WAVEFORMATEX *pFormat,
+        WAVEFORMATEX **ppClosestMatch) = 0;
+
+    virtual HRESULT on_get_mix_format(WAVEFORMATEX **pp_device_format) = 0;
+
+    virtual HRESULT on_get_device_period(
+        REFERENCE_TIME *default_device_period,
+        REFERENCE_TIME *minimum_device_period) = 0;
+
+    virtual HRESULT on_start() = 0;
+
+    virtual HRESULT on_stop() = 0;
+
+    virtual HRESULT on_set_event_handle(HANDLE *event_handle) = 0;
+#pragma endregion
+
+#pragma region IAudioRenderClient
+    virtual HRESULT on_get_buffer(uint32_t num_frames_requested, BYTE **ppData) = 0;
+    virtual HRESULT on_release_buffer(uint32_t num_frames_written, DWORD dwFlags) = 0;
+#pragma endregion
+};