videobuffer.h

来自「从 IEEE 1394总线接收传输流」· C头文件 代码 · 共 56 行

/*
 * MPEG2-TS over IEEE 1394 decoder - receive and decode MPEG-2 transport
 *                                   streams according to IEC 61883-4
 *
 * Copyright (C) 2000-2007, Manfred Weihs <[e-mail]>
 *
 * 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 VIDEOBUFFER_H
#define VIDEOBUFFER_H


#include <semaphore.h>


#define VIDEOBUFFER_ENTRY_SIZE 30000
#define VIDEOPESPACKETSINBUFFER 300

#define VIDEOBUFFER_FLAGS_CLEARSCREEN 1 /* this flag tells the video system to clear the screen after processing this buffer */

struct videobuffer_entry {
	int havedts;
	unsigned long long dts;
	int continuation; /* is this a new PES packet or the continuation of the previous one */
	int flags; /* currently only used for clearscreen */
	unsigned char buffer[VIDEOBUFFER_ENTRY_SIZE];
	unsigned long length;
};


extern struct videobuffer_entry videobuffer[VIDEOPESPACKETSINBUFFER];
extern volatile int videobufferstart; /* points to the entry which the consumer currently consumes */
extern volatile int videobufferend;   /* points to the entry which the producer currently fills */

extern sem_t videobuffer_sem;
int video_system_init();
int video_system_done();

void print_vo_drivers();
void set_vo_driver(const char* driver_name);

#endif