93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#pragma once
|
|
|
|
#include <array>
|
|
#include <atomic>
|
|
#include <chrono>
|
|
#include <condition_variable>
|
|
#include <mutex>
|
|
|
|
namespace AudioCore {
|
|
/**
|
|
* Responsible for the input/output events, set by the stream backend when buffers are consumed, and
|
|
* waited on by the audio manager. These callbacks signal the game's events to keep the audio buffer
|
|
* recycling going.
|
|
* In a real Switch this is not a seprate class, and exists entirely within the audio manager.
|
|
* On the Switch it's implemented more simply through a MultiWaitEventHolder, where it can
|
|
* wait on multiple events at once, and the events are not needed by the backend.
|
|
*/
|
|
class Event {
|
|
public:
|
|
enum class Type {
|
|
AudioInManager,
|
|
AudioOutManager,
|
|
FinalOutputRecorderManager,
|
|
Max,
|
|
};
|
|
|
|
/**
|
|
* Convert a manager type to an index.
|
|
*
|
|
* @param type - The manager type to convert
|
|
* @return The index of the type.
|
|
*/
|
|
size_t GetManagerIndex(Type type) const;
|
|
|
|
/**
|
|
* Set an audio event to true or false.
|
|
*
|
|
* @param type - The manager type to signal.
|
|
* @param signalled - Its signal state.
|
|
*/
|
|
void SetAudioEvent(Type type, bool signalled);
|
|
|
|
/**
|
|
* Check if the given manager type is signalled.
|
|
*
|
|
* @param type - The manager type to check.
|
|
* @return True if the event is signalled, otherwise false.
|
|
*/
|
|
bool CheckAudioEventSet(Type type) const;
|
|
|
|
/**
|
|
* Get the lock for audio events.
|
|
*
|
|
* @return Reference to the lock.
|
|
*/
|
|
std::mutex& GetAudioEventLock();
|
|
|
|
/**
|
|
* Get the manager event, this signals the audio manager to release buffers and signal the game
|
|
* for more.
|
|
*
|
|
* @return Reference to the condition variable.
|
|
*/
|
|
std::condition_variable_any& GetAudioEvent();
|
|
|
|
/**
|
|
* Wait on the manager_event.
|
|
*
|
|
* @param l - Lock held by the wait.
|
|
* @param timeout - Timeout for the wait. This is 2 seconds by default.
|
|
* @return True if the wait timed out, otherwise false if signalled.
|
|
*/
|
|
bool Wait(std::unique_lock<std::mutex>& l, std::chrono::seconds timeout);
|
|
|
|
/**
|
|
* Reset all manager events.
|
|
*/
|
|
void ClearEvents();
|
|
|
|
private:
|
|
/// Lock, used bythe audio manager
|
|
std::mutex event_lock;
|
|
/// Array of events, one per system type (see Type), last event is used to terminate
|
|
std::array<std::atomic<bool>, 4> events_signalled;
|
|
/// Event to signal the audio manager
|
|
std::condition_variable_any manager_event;
|
|
};
|
|
|
|
} // namespace AudioCore
|