audioloop.h

Go to the documentation of this file.

/*
 *  Copyright (C) 2004-2025 Savoir-faire Linux Inc.
 *
 *  Inspired by tonegenerator of
 *   Laurielle Lea <laurielle.lea@savoirfairelinux.com> (2004)
 *
 *  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 "ring_types.h"
#include "noncopyable.h"
#include "audio_format.h"
#include "media_buffer.h"
 
extern "C" {
#include <libavutil/frame.h>
}
 
namespace jami {
 
class AudioLoop
{
public:
    AudioLoop(AudioFormat format);
 
    AudioLoop& operator=(AudioLoop&& o) noexcept
    {
        std::swap(buffer_, o.buffer_);
        std::swap(pos_, o.pos_);
        return *this;
    }
 
    virtual ~AudioLoop();
 
    void getNext(AVFrame* output, bool mute);
    std::unique_ptr<AudioFrame> getNext(size_t samples = 0, bool mute = false);
 
    void seek(double relative_position);
 
    void reset() { pos_ = 0; }
 
    size_t getSize() const { return buffer_->nb_samples; }
    AudioFormat getFormat() const { return format_; }
 
protected:
    AudioFormat format_;
    libjami::FrameBuffer buffer_ {};
 
    size_t pos_ {0};
 
private:
    NON_COPYABLE(AudioLoop);
    virtual void onBufferFinish();
};
 
} // namespace jami