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c76ef3730b
We earlier moved to LGPLv3.0 or Later. This was a mistake as what we wanted was being able to link to proprietary libraries but LGPL is the opposite and it allows linking proprietary libraries to libskyline instead. After further consideration, we've moved to MPL-2.0, it allows linking to proprietary libraries and is a standardized license as compared to adding an exception to GPL.
59 lines
2.4 KiB
C++
59 lines
2.4 KiB
C++
// SPDX-License-Identifier: MPL-2.0
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// Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
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#pragma once
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#include <queue>
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#include <oboe/Oboe.h>
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#include <kernel/types/KEvent.h>
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#include <audio/track.h>
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#include "common.h"
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namespace skyline::audio {
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/**
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* @brief The Audio class is used to mix audio from all tracks
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*/
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class Audio : public oboe::AudioStreamCallback {
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private:
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const DeviceState &state; //!< The state of the device
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oboe::AudioStreamBuilder builder; //!< The audio stream builder, used to open
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oboe::ManagedStream outputStream; //!< The output oboe audio stream
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std::vector<std::shared_ptr<audio::AudioTrack>> audioTracks; //!< A vector of shared_ptr to every open audio track
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Mutex trackLock; //!< This mutex is used to ensure that audioTracks isn't modified while it is being used
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public:
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Audio(const DeviceState &state);
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/**
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* @brief Opens a new track that can be used to play sound
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* @param channelCount The amount channels that are present in the track
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* @param sampleRate The sample rate of the track
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* @param releaseCallback The callback to call when a buffer has been released
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* @return A shared pointer to a new AudioTrack object
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*/
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std::shared_ptr<AudioTrack> OpenTrack(const int channelCount, const int sampleRate, const std::function<void()> &releaseCallback);
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/**
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* @brief Closes a track and frees its data
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* @param track The track to close
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*/
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void CloseTrack(std::shared_ptr<AudioTrack> &track);
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/**
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* @brief The callback oboe uses to get audio sample data
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* @param audioStream The audio stream we are being called by
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* @param audioData The raw audio sample data
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* @param numFrames The amount of frames the sample data needs to contain
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*/
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oboe::DataCallbackResult onAudioReady(oboe::AudioStream *audioStream, void *audioData, int32_t numFrames);
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/**
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* @brief The callback oboe uses to notify the application about stream closure
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* @param audioStream The audio stream we are being called by
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* @param error The error due to which the stream is being closed
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*/
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void onErrorAfterClose(oboe::AudioStream *audioStream, oboe::Result error);
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};
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}
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