mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 08:12:17 +00:00
ba57b1c37f
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7671 b3059339-0415-0410-9bf9-f77b7e298cf2
78 lines
1.4 KiB
C
78 lines
1.4 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "config.h"
|
|
#include "ad_internal.h"
|
|
|
|
static ad_info_t info =
|
|
{
|
|
"Uncompressed DVD/VOB LPCM audio decoder",
|
|
"dvdpcm",
|
|
"Nick Kurshev",
|
|
"A'rpi",
|
|
""
|
|
};
|
|
|
|
LIBAD_EXTERN(dvdpcm)
|
|
|
|
static int init(sh_audio_t *sh)
|
|
{
|
|
/* DVD PCM Audio:*/
|
|
if(sh->codecdata_len==3){
|
|
// we have LPCM header:
|
|
unsigned char h=sh->codecdata[1];
|
|
sh->channels=1+(h&7);
|
|
switch((h>>4)&3){
|
|
case 0: sh->samplerate=48000;break;
|
|
case 1: sh->samplerate=96000;break;
|
|
case 2: sh->samplerate=44100;break;
|
|
case 3: sh->samplerate=32000;break;
|
|
}
|
|
} else {
|
|
// use defaults:
|
|
sh->channels=2;
|
|
sh->samplerate=48000;
|
|
}
|
|
sh->i_bps=2*sh->channels*sh->samplerate;
|
|
return 1;
|
|
}
|
|
|
|
static int preinit(sh_audio_t *sh)
|
|
{
|
|
sh->audio_out_minsize=2048;
|
|
return 1;
|
|
}
|
|
|
|
static void uninit(sh_audio_t *sh)
|
|
{
|
|
}
|
|
|
|
static int control(sh_audio_t *sh,int cmd,void* arg, ...)
|
|
{
|
|
int skip;
|
|
switch(cmd)
|
|
{
|
|
case ADCTRL_SKIP_FRAME:
|
|
skip=sh->i_bps/16;
|
|
skip=skip&(~3);
|
|
demux_read_data(sh->ds,NULL,skip);
|
|
return CONTROL_TRUE;
|
|
}
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
|
|
{
|
|
int j,len;
|
|
len=demux_read_data(sh_audio->ds,buf,(minlen+3)&(~3));
|
|
#ifndef WORDS_BIGENDIAN
|
|
for(j=0;j<len;j+=2){
|
|
char x=buf[j];
|
|
buf[j]=buf[j+1];
|
|
buf[j+1]=x;
|
|
}
|
|
#endif
|
|
return len;
|
|
}
|