opensllayer.h

Go to the documentation of this file.

/*
 *  Copyright (C) 2004-2025 Savoir-faire Linux Inc.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
#pragma once
 
#include <SLES/OpenSLES.h>
#include <SLES/OpenSLES_Android.h>
#include <vector>
#include <thread>
 
#include "audio/audiolayer.h"
#include "audio_player.h"
#include "audio_recorder.h"
 
class AudioPreference;
 
#include "noncopyable.h"
 
#include <memory>
 
namespace jami {
 
class RingBuffer;
 
#define ANDROID_BUFFER_QUEUE_LENGTH 2U
#define BUFFER_SIZE                 512U
 
#define MAX_NUMBER_INTERFACES    5
#define MAX_NUMBER_INPUT_DEVICES 3
 
class OpenSLLayer : public AudioLayer
{
public:
    OpenSLLayer(const AudioPreference& pref);
 
    ~OpenSLLayer();
 
    void startStream(AudioDeviceType stream = AudioDeviceType::ALL) override;
 
    void stopStream(AudioDeviceType stream = AudioDeviceType::ALL) override;
 
    std::vector<std::string> getCaptureDeviceList() const override;
 
    std::vector<std::string> getPlaybackDeviceList() const override;
 
    void init();
 
    void initAudioEngine();
    void shutdownAudioEngine();
 
    void startAudioCapture();
    void stopAudioCapture();
 
    virtual int getAudioDeviceIndex(const std::string&, AudioDeviceType) const override { return 0; }
 
    virtual std::string getAudioDeviceName(int, AudioDeviceType) const override { return ""; }
 
    void engineServicePlay();
    void engineServiceRing();
    void engineServiceRec();
 
private:
    virtual int getIndexCapture() const override { return 0; }
 
    virtual int getIndexPlayback() const override { return 0; }
 
    virtual int getIndexRingtone() const override { return 0; }
 
    uint32_t dbgEngineGetBufCount();
 
    void dumpAvailableEngineInterfaces();
 
    NON_COPYABLE(OpenSLLayer);
 
    virtual void updatePreference(AudioPreference& pref, int index, AudioDeviceType type) override;
 
    std::mutex recMtx {};
    std::condition_variable recCv {};
 
    SLObjectItf engineObject_ {nullptr};
 
    SLEngineItf engineInterface_ {nullptr};
 
    AudioFormat hardwareFormat_ {AudioFormat::MONO()};
    size_t hardwareBuffSize_ {BUFFER_SIZE};
 
    std::vector<sample_buf> bufs_ {};
 
    AudioQueue freePlayBufQueue_ {BUF_COUNT};
    AudioQueue playBufQueue_ {BUF_COUNT};
 
    AudioQueue freeRingBufQueue_ {BUF_COUNT};
    AudioQueue ringBufQueue_ {BUF_COUNT};
 
    AudioQueue freeRecBufQueue_ {BUF_COUNT}; // Owner of the queue
    AudioQueue recBufQueue_ {BUF_COUNT};     // Owner of the queue
 
    std::unique_ptr<opensl::AudioPlayer> player_ {};
    std::unique_ptr<opensl::AudioPlayer> ringtone_ {};
    std::unique_ptr<opensl::AudioRecorder> recorder_ {};
 
    std::thread recThread {};
};
 
} // namespace jami