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