/*
 * Copyright (C) 2015 Emeric Poupon
 *
 * This file is part of LMS.
 *
 * LMS 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.
 *
 * LMS 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 LMS.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <atomic>

#include "audio/ITranscoder.hpp"

namespace lms::core
{
    class IChildProcess;
}

namespace lms::audio::ffmpeg
{
    class Transcoder : public ITranscoder
    {
    public:
        Transcoder(const TranscodeParameters& parameters);
        ~Transcoder() override;
        Transcoder(const Transcoder&) = delete;
        Transcoder& operator=(const Transcoder&) = delete;

    private:
        void asyncRead(std::byte* buffer, std::size_t bufferSize, ReadCallback) override;
        std::size_t readSome(std::byte* buffer, std::size_t bufferSize) override;

        std::string_view getOutputMimeType() const override;
        const TranscodeOutputParameters& getOutputParameters() const override { return _outputParams; }

        bool finished() const override;
        static void init();
        void start();

        static std::atomic<std::size_t> _nextDebugId;
        const std::size_t _debugId;
        const TranscodeInputParameters _inputParams;
        const TranscodeOutputParameters _outputParams;
        std::unique_ptr<core::IChildProcess> _childProcess;
    };
} // namespace lms::audio::ffmpeg