mirror of https://github.com/mpv-player/mpv
129 lines
2.6 KiB
C
129 lines
2.6 KiB
C
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <unistd.h>
|
|
|
|
#include "stream.h"
|
|
|
|
extern int verbose; // defined in mplayer.c
|
|
|
|
#ifdef __FreeBSD__
|
|
#include "vcd_read_fbsd.c"
|
|
#else
|
|
#include "vcd_read.c"
|
|
#endif
|
|
|
|
//=================== STREAMER =========================
|
|
|
|
int stream_fill_buffer(stream_t *s){
|
|
int len;
|
|
if(s->eof){ s->buf_pos=s->buf_len=0; return 0; }
|
|
switch(s->type){
|
|
case STREAMTYPE_FILE:
|
|
case STREAMTYPE_STREAM:
|
|
len=read(s->fd,s->buffer,STREAM_BUFFER_SIZE);break;
|
|
case STREAMTYPE_VCD:
|
|
#ifdef VCD_CACHE
|
|
len=vcd_cache_read(s->fd,s->buffer);break;
|
|
#else
|
|
len=vcd_read(s->fd,s->buffer);break;
|
|
#endif
|
|
default: len=0;
|
|
}
|
|
if(len<=0){ s->eof=1; s->buf_pos=s->buf_len=0; return 0; }
|
|
s->buf_pos=0;
|
|
s->buf_len=len;
|
|
s->pos+=len;
|
|
// printf("[%d]",len);fflush(stdout);
|
|
return len;
|
|
}
|
|
|
|
int stream_seek_long(stream_t *s,unsigned int pos){
|
|
unsigned int newpos;
|
|
|
|
// if(verbose>=3) printf("seek to 0x%X\n",pos);
|
|
|
|
if(verbose>=3){
|
|
printf("s->pos=%X newpos=%X new_bufpos=%X buflen=%X \n",
|
|
(unsigned int)s->pos,newpos,pos,s->buf_len);
|
|
}
|
|
|
|
s->buf_pos=s->buf_len=0;
|
|
|
|
switch(s->type){
|
|
case STREAMTYPE_FILE:
|
|
case STREAMTYPE_STREAM:
|
|
newpos=pos&(~(STREAM_BUFFER_SIZE-1));break;
|
|
case STREAMTYPE_VCD:
|
|
newpos=(pos/VCD_SECTOR_DATA)*VCD_SECTOR_DATA;break;
|
|
}
|
|
|
|
pos-=newpos;
|
|
|
|
if(newpos==0 || newpos!=s->pos){
|
|
switch(s->type){
|
|
case STREAMTYPE_FILE:
|
|
s->pos=newpos; // real seek
|
|
if(lseek(s->fd,s->pos,SEEK_SET)<0) s->eof=1;
|
|
break;
|
|
case STREAMTYPE_VCD:
|
|
s->pos=newpos; // real seek
|
|
#ifdef VCD_CACHE
|
|
vcd_cache_seek(s->pos/VCD_SECTOR_DATA);
|
|
#else
|
|
vcd_set_msf(s->pos/VCD_SECTOR_DATA);
|
|
#endif
|
|
break;
|
|
case STREAMTYPE_STREAM:
|
|
//s->pos=newpos; // real seek
|
|
if(newpos<s->pos){
|
|
printf("Cannot seek backward in linear streams!\n");
|
|
return 1;
|
|
}
|
|
while(s->pos<newpos){
|
|
if(stream_fill_buffer(s)<=0) break; // EOF
|
|
}
|
|
break;
|
|
}
|
|
// putchar('.');fflush(stdout);
|
|
//} else {
|
|
// putchar('%');fflush(stdout);
|
|
}
|
|
|
|
stream_fill_buffer(s);
|
|
if(pos>=0 && pos<s->buf_len){
|
|
s->buf_pos=pos; // byte position in sector
|
|
return 1;
|
|
}
|
|
if(verbose) printf("stream_seek: WARNING! Can't seek to 0x%X !\n",pos+newpos);
|
|
return 0;
|
|
}
|
|
|
|
|
|
void stream_reset(stream_t *s){
|
|
if(s->eof){
|
|
s->pos=0; //ftell(f);
|
|
// s->buf_pos=s->buf_len=0;
|
|
s->eof=0;
|
|
}
|
|
//stream_seek(s,0);
|
|
}
|
|
|
|
stream_t* new_stream(int fd,int type){
|
|
stream_t *s=malloc(sizeof(stream_t));
|
|
s->fd=fd;
|
|
s->type=type;
|
|
s->buf_pos=s->buf_len=0;
|
|
s->start_pos=s->end_pos=0;
|
|
stream_reset(s);
|
|
return s;
|
|
}
|
|
|
|
void free_stream(stream_t *s){
|
|
free(s);
|
|
}
|
|
|
|
|