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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <mutex>
#include "audio_core/out/audio_out_system.h"
namespace Core {
class System;
}
namespace Kernel {
class KEvent;
class KReadableEvent;
} // namespace Kernel
namespace AudioCore::AudioOut {
class Manager;
/**
* Interface between the service and audio out system. Mainly responsible for forwarding service
* calls to the system.
*/
class Out {
public:
explicit Out(Core::System& system, Manager& manager, Kernel::KEvent* event, size_t session_id);
/**
* Free this audio out from the audio out manager.
*/
void Free();
/**
* Get this audio out's system.
*/
System& GetSystem();
/**
* Get the current state.
*
* @return Started or Stopped.
*/
AudioOut::State GetState();
/**
* Start the system
*
* @return Result code
*/
Result StartSystem();
/**
* Start the system's device session.
*/
void StartSession();
/**
* Stop the system.
*
* @return Result code
*/
Result StopSystem();
/**
* Append a new buffer to the system, the buffer event will be signalled when it is filled.
*
* @param buffer - The new buffer to append.
* @param tag - Unique tag for this buffer.
* @return Result code.
*/
Result AppendBuffer(const AudioOutBuffer& buffer, u64 tag);
/**
* Release all completed buffers, and register any appended.
*/
void ReleaseAndRegisterBuffers();
/**
* Flush all buffers.
*/
bool FlushAudioOutBuffers();
/**
* Get all of the currently released buffers.
*
* @param tags - Output container for the buffer tags which were released.
* @return The number of buffers released.
*/
u32 GetReleasedBuffers(std::span<u64> tags);
/**
* Get the buffer event for this audio out, this event will be signalled when a buffer is
* filled.
* @return The buffer event.
*/
Kernel::KReadableEvent& GetBufferEvent();
/**
* Get the current system volume.
*
* @return The current volume.
*/
f32 GetVolume() const;
/**
* Set the system volume.
*
* @param volume - The volume to set.
*/
void SetVolume(f32 volume);
/**
* Check if a buffer is in the system.
*
* @param tag - The tag to search for.
* @return True if the buffer is in the system, otherwise false.
*/
bool ContainsAudioBuffer(u64 tag) const;
/**
* Get the maximum number of buffers.
*
* @return The maximum number of buffers.
*/
u32 GetBufferCount() const;
/**
* Get the total played sample count for this audio out.
*
* @return The played sample count.
*/
u64 GetPlayedSampleCount() const;
private:
/// The AudioOut::Manager this audio out is registered with
Manager& manager;
/// Manager's mutex
std::recursive_mutex& parent_mutex;
/// Buffer event, signalled when buffers are ready to be released
Kernel::KEvent* event;
/// Main audio out system
System system;
};
} // namespace AudioCore::AudioOut
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