mirror of https://github.com/mpv-player/mpv
305 lines
6.6 KiB
C
305 lines
6.6 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <signal.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "../linux/shmem.h"
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#include "stream.h"
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#include "demuxer.h"
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extern int verbose; // defined in mplayer.c
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#ifdef HAVE_VCD
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#ifdef __FreeBSD__
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#include "vcd_read_fbsd.h"
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#elif defined(__NetBSD__)
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#include "vcd_read_nbsd.h"
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#else
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#include "vcd_read.h"
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#endif
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#endif
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#ifdef USE_DVDREAD
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int dvd_read_sector(void* d,void* p2);
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void dvd_seek(void* d,off_t pos);
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void dvd_close(dvd_priv_t *d);
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#endif
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#ifdef HAVE_CDDA
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int read_cdda(stream_t* s);
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void seek_cdda(stream_t* s);
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void close_cdda(stream_t* s);
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#endif
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//=================== STREAMER =========================
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int stream_fill_buffer(stream_t *s){
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int len;
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if(s->eof){ s->buf_pos=s->buf_len=0; return 0; }
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switch(s->type){
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case STREAMTYPE_FILE:
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case STREAMTYPE_STREAM:
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case STREAMTYPE_PLAYLIST:
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#ifdef STREAMING
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if( s->streaming_ctrl!=NULL ) {
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len=s->streaming_ctrl->streaming_read(s->fd,s->buffer,STREAM_BUFFER_SIZE, s->streaming_ctrl);break;
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} else {
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len=read(s->fd,s->buffer,STREAM_BUFFER_SIZE);break;
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}
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#else
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len=read(s->fd,s->buffer,STREAM_BUFFER_SIZE);break;
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#endif
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#ifdef HAVE_CDDA
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case STREAMTYPE_CDDA:
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len = read_cdda(s);
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break;
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#endif
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#ifdef HAVE_VCD
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case STREAMTYPE_VCD:
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#ifdef VCD_CACHE
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len=vcd_cache_read(s->fd,s->buffer);break;
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#else
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len=vcd_read(s->fd,s->buffer);break;
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#endif
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#endif
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#ifdef USE_DVDNAV
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case STREAMTYPE_DVDNAV: {
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dvdnav_stream_read((dvdnav_priv_t*)s->priv,s->buffer,&len);
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if (len==0) return 0; // this was an event, so repeat the read
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break;
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}
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#endif
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#ifdef USE_DVDREAD
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case STREAMTYPE_DVD: {
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off_t pos=dvd_read_sector(s->priv,s->buffer);
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if(pos>=0){
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len=2048; // full sector
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s->pos=2048*pos-len;
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} else len=-1; // error
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break;
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}
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#endif
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#ifdef USE_TV
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case STREAMTYPE_TV:
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{
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len = 0;
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break;
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}
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#endif
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case STREAMTYPE_DS:
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len = demux_read_data((demux_stream_t*)s->priv,s->buffer,STREAM_BUFFER_SIZE);
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break;
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default: len=0;
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}
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if(len<=0){ s->eof=1; s->buf_pos=s->buf_len=0; return 0; }
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s->buf_pos=0;
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s->buf_len=len;
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s->pos+=len;
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// printf("[%d]",len);fflush(stdout);
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return len;
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}
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int stream_seek_long(stream_t *s,off_t pos){
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off_t newpos=0;
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// if(verbose>=3) printf("seek_long to 0x%X\n",(unsigned int)pos);
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s->buf_pos=s->buf_len=0;
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switch(s->type){
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case STREAMTYPE_FILE:
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case STREAMTYPE_STREAM:
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#ifdef _LARGEFILE_SOURCE
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newpos=pos&(~((long long)STREAM_BUFFER_SIZE-1));break;
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#else
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newpos=pos&(~(STREAM_BUFFER_SIZE-1));break;
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#endif
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case STREAMTYPE_VCD:
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newpos=(pos/VCD_SECTOR_DATA)*VCD_SECTOR_DATA;break;
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case STREAMTYPE_DVD:
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newpos=pos/2048; newpos*=2048; break;
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}
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if(verbose>=3){
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#ifdef _LARGEFILE_SOURCE
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printf("s->pos=%llX newpos=%llX new_bufpos=%llX buflen=%X \n",
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(long long)s->pos,(long long)newpos,(long long)pos,s->buf_len);
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#else
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printf("s->pos=%X newpos=%X new_bufpos=%X buflen=%X \n",
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(unsigned int)s->pos,newpos,pos,s->buf_len);
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#endif
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}
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pos-=newpos;
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if(newpos==0 || newpos!=s->pos){
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switch(s->type){
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case STREAMTYPE_FILE:
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s->pos=newpos; // real seek
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if(lseek(s->fd,s->pos,SEEK_SET)<0) s->eof=1;
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break;
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#ifdef HAVE_VCD
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case STREAMTYPE_VCD:
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s->pos=newpos; // real seek
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#ifdef VCD_CACHE
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vcd_cache_seek(s->pos/VCD_SECTOR_DATA);
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#else
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vcd_set_msf(s->pos/VCD_SECTOR_DATA);
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#endif
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break;
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#endif
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#ifdef HAVE_CDDA
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case STREAMTYPE_CDDA: {
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s->pos=newpos;
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seek_cdda(s);
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break;
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}
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#endif
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#ifdef USE_DVDNAV
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case STREAMTYPE_DVDNAV: {
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if (newpos==0) {
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if (dvdnav_stream_reset((dvdnav_priv_t*)s->priv))
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s->pos=0;
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}
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if(newpos!=s->pos){
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mp_msg(MSGT_STREAM,MSGL_INFO,"Cannot seek in DVDNAV streams yet!\n");
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return 1;
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}
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break;
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}
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#endif
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#ifdef USE_DVDREAD
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case STREAMTYPE_DVD:
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s->pos=newpos; // real seek
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dvd_seek(s->priv,s->pos/2048);
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break;
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#endif
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case STREAMTYPE_STREAM:
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//s->pos=newpos; // real seek
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// Some streaming protocol allow to seek backward and forward
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// A function call that return -1 can tell that the protocol
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// doesn't support seeking.
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#ifdef STREAMING
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if( s->streaming_ctrl!=NULL ) {
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if( s->streaming_ctrl->streaming_seek( s->fd, pos, s->streaming_ctrl )<0 ) {
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mp_msg(MSGT_STREAM,MSGL_INFO,"Stream not seekable!\n");
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return 1;
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}
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}
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#else
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if(newpos<s->pos){
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mp_msg(MSGT_STREAM,MSGL_INFO,"Cannot seek backward in linear streams!\n");
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return 1;
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}
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while(s->pos<newpos){
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if(stream_fill_buffer(s)<=0) break; // EOF
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}
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#endif
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break;
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#ifdef USE_TV
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case STREAMTYPE_TV:
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s->pos=newpos; /* no sense */
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break;
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#endif
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}
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// putchar('.');fflush(stdout);
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//} else {
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// putchar('%');fflush(stdout);
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}
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stream_fill_buffer(s);
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if(pos>=0 && pos<=s->buf_len){
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s->buf_pos=pos; // byte position in sector
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return 1;
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}
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// if(pos==s->buf_len) printf("XXX Seek to last byte of file -> EOF\n");
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#ifdef _LARGEFILE_SOURCE
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mp_msg(MSGT_STREAM,MSGL_V,"stream_seek: WARNING! Can't seek to 0x%llX !\n",(long long)(pos+newpos));
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#else
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mp_msg(MSGT_STREAM,MSGL_V,"stream_seek: WARNING! Can't seek to 0x%X !\n",(pos+newpos));
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#endif
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return 0;
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}
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void stream_reset(stream_t *s){
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if(s->eof){
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s->pos=0; //ftell(f);
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// s->buf_pos=s->buf_len=0;
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s->eof=0;
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}
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//stream_seek(s,0);
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}
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stream_t* new_memory_stream(unsigned char* data,int len){
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stream_t *s=malloc(sizeof(stream_t)+len);
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s->fd=-1;
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s->type=STREAMTYPE_MEMORY;
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s->buf_pos=0; s->buf_len=len;
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s->start_pos=0; s->end_pos=len;
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stream_reset(s);
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s->pos=len;
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memcpy(s->buffer,data,len);
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return s;
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}
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stream_t* new_stream(int fd,int type){
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stream_t *s=malloc(sizeof(stream_t));
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if(s==NULL) return NULL;
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memset(s,0,sizeof(stream_t));
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s->fd=fd;
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s->type=type;
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s->buf_pos=s->buf_len=0;
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s->start_pos=s->end_pos=0;
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s->priv=NULL;
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s->cache_pid=0;
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stream_reset(s);
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return s;
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}
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void free_stream(stream_t *s){
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// printf("\n*** free_stream() called ***\n");
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if(s->cache_pid) {
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// kill(s->cache_pid,SIGTERM);
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kill(s->cache_pid,SIGKILL);
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waitpid(s->cache_pid,NULL,0);
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shmem_free(s->cache_data);
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}
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if(s->fd>0) close(s->fd);
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switch(s->type) {
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#ifdef HAVE_CDDA
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case STREAMTYPE_CDDA:
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close_cdda(s);
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break;
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#endif
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#ifdef USE_DVDREAD
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case STREAMTYPE_DVD:
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dvd_close(s->priv);
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#endif
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}
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if(s->priv) free(s->priv);
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free(s);
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}
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stream_t* new_ds_stream(demux_stream_t *ds) {
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stream_t* s = new_stream(-1,STREAMTYPE_DS);
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s->priv = ds;
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return s;
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}
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