//// Copyright (c) 2004 by Istv醤 V醨adi//// This file is part of dxr3Player, a DVD player written specifically // for the DXR3 (aka Hollywood+) decoder card.// 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 2 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, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA#ifndef DXR3PLAYER_OUTPUT_SOUNDCARD_H#define DXR3PLAYER_OUTPUT_SOUNDCARD_H//------------------------------------------------------------------------------#include "AudioDevice.h"#include "sched/Thread.h"#include "util/Device.h"#include "util/FDWriter.h"//------------------------------------------------------------------------------namespace output {//------------------------------------------------------------------------------/** * Wrapper class for an OSS soundcard device */class OSSSoundcard : public AudioDevice,                      public FDWriter< Device<> >,                     public sched::Thread{private:    /**     * The size of the sound card driver's buffer.     */    size_t bufferSize;    /**     * The number of bytes written so far.     */    unsigned long long bytesWritten;    /**     * The data to write.     */    const void* volatile data;    /**     * The length of the data to write.     */    volatile size_t dataLength;public:    /**     * Construct the sound card with the given DSP device.     */    OSSSoundcard(const char* dsp);    /**     * Destroy the sound card.     */    ~OSSSoundcard();    /**     * Start the playback.     *     * Can be called only for triggerable sound cards.     */    virtual void startPlayback();    /**     * Write the given buffer to the sound card. It also keeps track     * of the number of bytes written.     */    virtual size_t play(const void* buf, size_t count, bool interruptible = true);    /**     * Get the number of samples played since opening the device.     *     * Can be called only for sound cards with real-time capability     */    virtual unsigned long long getNumberOfSamplesPlayed();        /**     * Get the number of samples buffered (i.e. in the buffer, ready     * to be played, but not yet played!).      *     * Can be called only for sound cards with real-time capability     */    virtual unsigned long long getNumberOfSamplesBuffered();    /**     * Stop the playback. For triggerable sound cards, the output will     * be disabled as well, and has to be started with a call to start().     */    virtual void stopPlayback();    /**     * Stop the sound card.     */    virtual void stop();private:    /**     * Convert the given number of samples to a PTS difference value.     */    ptsdiff_t samples2PTS(unsigned long long samples) const;    /**     * Setup the audio device.     *     * @param s the audio mode     * @param rate the sampling rate in Hz     * @param s indicate if stereo or mono mode     */    virtual void doSetup(audioMode_t& mode, unsigned& rate, bool& s);    /**     * Perform the actual writing of the data.     */    virtual void perform();};//------------------------------------------------------------------------------} /* namespace output *///------------------------------------------------------------------------------#endif // DXR3PLAYER_OUTPUT_SOUNDCARD_H// Local variables:// mode: c++// End: