libds_decoder.h

linux下实现视频播放的播放器

/*
 *  Copyright (C) 2005-2007  gulikoza
 *
 *  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.
 */

/* $Id$ */

#ifndef LIBDSDECODER_H
#define LIBDSDECODER_H

#if (C_HAS_DIRECTSHOW)

#define MODULE "libds_decoder"

class libds_decoder : public Decoder {
private:
    // Codec
    const char * filter;

protected:
    int Run();

public:
    libds_decoder(const char * name, const bool wait, const unsigned int buffersize = BUFFERSIZE)
	:Decoder(wait, buffersize),filter(name) {

	// Try to open DirectShow filter or throw an exception
	FILE * dummy = fopen(filter, "rb");

	if(dummy == NULL)
	    throw "Cannot open DirectShow codec!";

	fclose(dummy);

        // Create a fifo queue for pts stamps
	fifo = new FIFO(64);

	// Signal main thread to connect us to the renderer
	SDL_Event event;
	event.type = SDL_USEREVENT+1;
	event.user.data1 = (void*)this;
	event.user.data2 = (void*)SDL_YV12_OVERLAY;
	events->Push(&event);
    }

    ~libds_decoder() {
	fifo->End();
	TerminateThread();

	// Signal main thread to disconnect us from the renderer
	SDL_Event event;
	event.type = SDL_USEREVENT+1;
	event.user.data1 = NULL;
	events->Push(&event);

	SAFE_DELETE(fifo);
     }
};

#undef MODULE

#endif // (C_HAS_DIRECTSHOW)

#endif 	// LIBDSDECODER_H