processorhandler.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_DVD_READER_PROCESSORHANDLER_H
#define DXR3PLAYER_DVD_READER_PROCESSORHANDLER_H
//------------------------------------------------------------------------------

#include "dvd/vm/Processor.h"
#include "dvd/vm/SimpleProcessorCommand.h"

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

namespace dvd { namespace demux {

class DemultiplexerParameters;

} }

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

namespace dvd { namespace vm {

class ProcessorCommandQueue;
class State;

} }

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

namespace output {

class AVAttributes;

}

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

namespace dvd { namespace reader {

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

/**
 * The processor handler. It encapsulates some functions of the
 * processor and helps to keep track of certain things.
 */
class ProcessorHandler
{
private:
    /**
     * The processor.
     */
    dvd::vm::Processor processor;

    /**
     * The processor command queue.
     */
    dvd::vm::ProcessorCommandQueue& commandQueue;

    /**
     * The ID of the last command put into the command queue.
     */
    size_t lastCommandID;
    
public:
    /**
     * Construct the processor handler.
     */
    ProcessorHandler(dvd::vm::ProcessorCommandQueue& commandQueue, 
                     dvd::DVD* dvd);

    /**
     * Reset the handler.
     */
    void reset();

    /**
     * Get the position.
     */
    const dvd::vm::Position& getPosition() const;
    
    /**
     * Get the state.
     */
    const dvd::vm::State& getState() const;
    
    /**
     * Get the system parameter register file
     */
    const dvd::vm::SPRM& getSPRM() const;

    /**
     * Set the processor's state.
     */
    void setState(const dvd::vm::State& state);

    /**
     * Get and reset the last command ID.
     */
    size_t getLastCommandID();

    /**
     * Get the stream attributes into the given structure.
     */
    void getStreamAttributes(output::AVAttributes& attributes) const;

    /**
     * Get the SPU palette into the given array.
     */
    void getSPUPalette(palette_t palette) const;

    /**
     * Get the parameters for the demultiplexer.
     */
    void getDemultiplexerParameters(dvd::demux::DemultiplexerParameters& parameters) const;

    /**
     * Reset the processor and go to the first play PGC.
     */
    void resetProcessor();

    /**
     * Branch the processor according to the given state.
     * FIXME: rename to setState
     */
    void branch(const dvd::vm::State& state);

    /**
     * Set the sector number of the processor.
     */
    void setSectorNumber(size_t sectorNo);

    /**
     * Set the highlighted button number.
     */
    void setHighlightedButtonNumber(size_t buttonNo);

    /**
     * Instruct the processor to go to the next cell.
     *
     * @param stillTime will contain the length of the still time
     * after the cell.
     *
     * @return if there was a next cell or not
     */
    bool nextCell(unsigned& stillTime);

    /**
     * Instruct the processor to go to the previous cell.
     *
     * @return if there was a previous cell or not
     */
    bool previousCell();    

private:
    /**
     * Enqeue the given command
     */
    void enqueueCommand(dvd::vm::SimpleProcessorCommand::command_t cmd);

    /**
     * Enqeue the given command
     */
    void enqueueCommand(dvd::vm::ProcessorCommand* command);
};

//------------------------------------------------------------------------------
// Inline definitions
//------------------------------------------------------------------------------

inline const dvd::vm::Position& ProcessorHandler::getPosition() const
{
    return processor.getPosition();
}

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

inline const dvd::vm::State& ProcessorHandler::getState() const
{
    return processor.getState();
}

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

inline const dvd::vm::SPRM& ProcessorHandler::getSPRM() const
{
    return processor.getSPRM();
}

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

} /* namespace dvd::reader */ } /* namespace dvd */

//------------------------------------------------------------------------------
#endif // DVD_READER_PROCESSORHANDLER_H

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