Aegisub/aegisub/src/audio_player_oss.h

// Copyright (c) 2009, Grigori Goronzy
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of the Aegisub Group nor the names of its contributors
//     may be used to endorse or promote products derived from this software
//     without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file audio_player_oss.h
/// @see audio_player_oss.cpp
/// @ingroup audio_output
///

#include "config.h"

#ifdef WITH_OSS


///////////
// Headers
#ifndef AGI_PRE
#include <sys/ioctl.h>
#endif

#include <fcntl.h>
#ifdef HAVE_SOUNDCARD_H
#   include <soundcard.h>
#else
#   ifdef HAVE_SYS_SOUNDCARD_H
#       include <sys/soundcard.h>
#   endif
#endif

#include "include/aegisub/audio_player.h"
#include "include/aegisub/audio_provider.h"
#include "options.h"
#include "utils.h"


//////////////
// Prototypes
class OSSPlayer;



/// DOCME
/// @class OSSPlayerThread
/// @brief DOCME
///
/// DOCME
class OSSPlayerThread : public wxThread {
private:

    /// DOCME
    OSSPlayer *parent;

public:
    OSSPlayerThread(OSSPlayer *parent);

    wxThread::ExitCode Entry();
};



/// DOCME
/// @class OSSPlayer
/// @brief DOCME
///
/// DOCME
class OSSPlayer : public AudioPlayer {
private:
    friend class OSSPlayerThread;

    /// DOCME
    bool open;

    /// DOCME
    unsigned int rate; // sample rate of audio

    OSSPlayerThread *thread;

    /// DOCME
    AudioProvider *provider;

    /// DOCME
    volatile bool playing;

    /// DOCME
    volatile float volume;

    /// DOCME
    volatile unsigned long start_frame; // first frame of playback

    /// DOCME
    volatile unsigned long cur_frame; // last written frame + 1

    /// DOCME
    volatile unsigned long end_frame; // last frame to play

    /// DOCME
    unsigned long bpf; // bytes per frame

    // OSS audio device handle
    volatile int dspdev;

public:
    OSSPlayer();
    ~OSSPlayer();

    void OpenStream();
    void CloseStream();

    void Play(int64_t start, int64_t count);
    void Stop(bool timerToo=true);
    bool IsPlaying();

    int64_t GetStartPosition();
    int64_t GetEndPosition();
    int64_t GetCurrentPosition();
    void SetEndPosition(int64_t pos);
    void SetCurrentPosition(int64_t pos);

    /// @brief DOCME
    /// @param vol 
    /// @return 
    ///
    void SetVolume(double vol) { volume = vol; }

    /// @brief DOCME
    /// @return 
    ///
    double GetVolume() { return volume; }
};




/// DOCME
/// @class OSSPlayerFactory
/// @brief DOCME
///
/// DOCME
class OSSPlayerFactory : public AudioPlayerFactory {
public:

    /// @brief DOCME
    ///
    AudioPlayer *CreatePlayer() { return new OSSPlayer(); }
};

#endif