karaoke.c

一个两碟控制的VCD的代码,两碟之间的转动及连续播放,已大量生产的CODE.

/* SCCSID @(#)karaoke.c	1.12 2/12/98 */ 

#include "options.h"
#include "globals.h"

#include "../mvd.h"
#include "../vcd30.h"

register volatile int *mvd asm("r27");

extern unsigned int vcd20_start, vcd20_end ;

#define PLAY_VIDEO_CLIP 1
#define PLAY_WHOLE_VIDEO 0 

void play_karaoke(int mmss1, int mmss2) {
  if (currPage.flag_sound) au_end(0);
  mmss1=logical2physical(mmss1+150);
  mmss2=logical2physical(mmss2+150);
  vcd20_start = mmss1;
  vcd20_end = mmss2;
  vcd20(1);
}

void play30_item(int msf1, int msf2, unsigned int item) {

	char *buf;
	unsigned char flag;
	
	if (findfile("/VCD/INFO.VCD\0", 0) != 1) return;
	buf = read_file();
	flag = *(unsigned char *)(buf+55+item);
	GX_free(buf);

	vcd20_start = logical2physical(msf1+150);
	vcd20_end = logical2physical(msf2+150);
	
#ifdef DEBUG
	TVprintf("play30_item item %d flag %d", item , flag);
	pause();
#endif
	switch (flag & 0x0c) {
		case 0x0c: pic_type = 0;
			vcd20(VCD30_PLAY_SEG);	
			break;
		case 0x04: pic_type = 1;
			vcd20(VCD30_PLAY_SEG); 
			break;
		case 0x08: pic_type = 2;
			vcd20(VCD30_PLAY_SEG); 
			break;
		default:
			break;
	}
}


#if 0

void play_video_clip(char *fname) {
  int status, msf1;
  save_html();
  findfile("/MPEGAV\0", 1);
  status=findfile(fname, 0);
  if (status==1) play_karaoke(CurrFile.loc,CurrFile.sz);
  restore_html();
}

#endif