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#pragma once
#ifndef DOXYGEN_GENERATING_OUTPUT
#define NCINE_INCLUDE_OPENALC
#include "../CommonHeaders.h"
#endif
#include "IAudioDevice.h"
#if defined(DEATH_TARGET_WINDOWS) && !defined(DEATH_TARGET_WINDOWS_RT)
# include <CommonWindows.h>
# include <mmdeviceapi.h>
# include <audiopolicy.h>
#endif
#include <Containers/SmallVector.h>
#include <Containers/String.h>
using namespace Death::Containers;
namespace nCine
{
/// OpenAL audio device backend implementation
class ALAudioDevice : public IAudioDevice
#if defined(DEATH_TARGET_WINDOWS) && !defined(DEATH_TARGET_WINDOWS_RT)
, public IMMNotificationClient
#endif
{
public:
ALAudioDevice();
~ALAudioDevice() override;
ALAudioDevice(const ALAudioDevice&) = delete;
ALAudioDevice& operator=(const ALAudioDevice&) = delete;
bool isValid() const override;
const char* name() const override;
float gain() const override {
return gain_;
}
void setGain(float gain) override;
inline std::uint32_t maxNumPlayers() const override {
return MaxSources;
}
inline std::uint32_t numPlayers() const override {
return std::uint32_t(players_.size());
}
const IAudioPlayer* player(unsigned int index) const override;
void stopPlayers() override;
void pausePlayers() override;
void stopPlayers(PlayerType playerType) override;
void pausePlayers(PlayerType playerType) override;
void freezePlayers() override;
void unfreezePlayers() override;
std::uint32_t registerPlayer(IAudioPlayer* player) override;
void unregisterPlayer(IAudioPlayer* player) override;
void updatePlayers() override;
const Vector3f& getListenerPosition() const override;
void updateListener(const Vector3f& position, const Vector3f& velocity) override;
std::int32_t nativeFrequency() override;
void suspendDevice() override;
void resumeDevice() override;
private:
/// Maximum number of OpenAL sources
#if defined(DEATH_TARGET_ANDROID) || defined(DEATH_TARGET_EMSCRIPTEN) || defined(DEATH_TARGET_IOS)
static const std::int32_t MaxSources = 32;
#else
static const std::int32_t MaxSources = 64;
#endif
/// The OpenAL device
ALCdevice* device_;
/// The OpenAL context for the device
ALCcontext* context_;
/// The listener gain value (master volume)
ALfloat gain_;
/// The array of all audio sources
ALuint sources_[MaxSources];
/// The array of currently inactive audio sources
SmallVector<ALuint, MaxSources> sourcePool_;
/// The array of currently active audio players
SmallVector<IAudioPlayer*, MaxSources> players_;
/// Listener position
Vector3f _listenerPos;
/// native device frequency
std::int32_t nativeFreq_;
/// The OpenAL device name string
const char* deviceName_;
void Init();
#if defined(DEATH_TARGET_WINDOWS) && !defined(DEATH_TARGET_WINDOWS_RT)
static constexpr std::uint64_t DeviceChangeLimitMs = 250;
LPALCREOPENDEVICESOFT alcReopenDeviceSOFT_;
IMMDeviceEnumerator* pEnumerator_;
std::uint64_t lastDeviceChangeTime_;
String lastDeviceId_;
bool shouldRecreate_;
void recreateAudioDevice();
void registerAudioEvents();
void unregisterAudioEvents();
// IMMNotificationClient implementation
IFACEMETHODIMP_(ULONG) AddRef() override;
IFACEMETHODIMP_(ULONG) Release() override;
IFACEMETHODIMP QueryInterface(REFIID iid, void** object) override;
IFACEMETHODIMP OnPropertyValueChanged(LPCWSTR pwstrDeviceId, const PROPERTYKEY key) override;
IFACEMETHODIMP OnDeviceAdded(LPCWSTR pwstrDeviceId) override;
IFACEMETHODIMP OnDeviceRemoved(LPCWSTR pwstrDeviceId) override;
IFACEMETHODIMP OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState) override;
IFACEMETHODIMP OnDefaultDeviceChanged(EDataFlow flow, ERole role, LPCWSTR pwstrDefaultDeviceId) override;
#endif
};
}
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