/***
    This file is part of snapcast
    Copyright (C) 2014-2019  Johannes Pohl

    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 <http://www.gnu.org/licenses/>.
***/

#ifndef ALSA_PLAYER_H
#define ALSA_PLAYER_H

#include "player.hpp"
#include <alsa/asoundlib.h>


/// Audio Player
/**
 * Audio player implementation using Alsa
 */
class AlsaPlayer : public Player
{
public:
    AlsaPlayer(const PcmDevice& pcmDevice, std::shared_ptr<Stream> stream);
    ~AlsaPlayer() override;

    /// Set audio volume in range [0..1]
    void start() override;
    void stop() override;

    /// List the system's audio output devices
    static std::vector<PcmDevice> pcm_list(void);

protected:
    void worker() override;

private:
    void initAlsa();
    void uninitAlsa();

    snd_pcm_t* handle_;
    snd_pcm_uframes_t frames_;
    char* buff_;
};


#endif