testoutputprocessor.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2003 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_TESTOUTPUTPROCESSOR_H
#define DXR3PLAYER_OUTPUT_TESTOUTPUTPROCESSOR_H
//------------------------------------------------------------------------------

#include "output/OutputProcessor.h"
#include "output/AC3Decoder.h"

#include "sched/FDWaitCondition.h"

#include "util/Reference.h"

//------------------------------------------------------------------------------

namespace dvd { namespace packet {

class PacketQueue;
class TimedDataBlockPacket;

} }

//------------------------------------------------------------------------------

namespace output {

//------------------------------------------------------------------------------

/**
 * Output processor for test purposes.
 */
class TestOutputProcessor : public OutputProcessor
{
private:
    /**
     * The input queue.
     */
    dvd::packet::PacketQueue& inputQueue;

    /**
     * The DSP file descriptor.
     */
    int dsp;

    /**
     * Wait condition for the DSP.
     */
    sched::FDWritableWaitCondition dspAvailable;
    
    /**
     * The AC-3 decoder.
     */
//     AC3Decoder decoder;

public:
    /**
     * Construct the output processor with the given queue.
     */
    TestOutputProcessor(dvd::packet::PacketQueue& inputQueue);

    /**
     * Destroy the output processor
     */
    ~TestOutputProcessor();

    /**
     * @see sched::Schedulable::run
     */
    virtual void run();

    /**
     * @see OutputProcessor::reset
     */
    virtual void reset();

    /**
     * @see AudioProcessor::volumeReset
     */
    virtual unsigned volumeReset();

    /**
     * @see AudioProcessor::volumeUp
     */
    virtual unsigned volumeUp();

    /**
     * @see AudioProcessor::volumeUp
     */
    virtual unsigned volumeDown();

    /**
     * @see AudioProcessor::toggleAudio
     */
    virtual bool toggleAudio();

    /**
     * @see OutputProcessor::handleOperation
     */
    virtual processorChange_t handleOperation(input::InputListener::operation_t operation,
                                              dvd::vm::State& processorState);
    /**
     * @see OutputProcessor::getVMState
     */
    virtual const dvd::vm::State& getVMState();

    /**
     * Does nothing.
     *
     * @see OutputProcessor::toggleOutput
     */
    virtual void toggleOutput();

private:
    /**
     * Decode as much audio as possible from the current data block.
     */
    void decodeAudio(Reference<dvd::packet::TimedDataBlockPacket> packet);

    /**
     * Write the given audio data.
     */
    void write(const char* data, size_t length);
};

//------------------------------------------------------------------------------

} /* namespace output */

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_OUTPUT_TESTOUTPUTPROCESSOR_H

// Local variables:
// mode: c++
// End: