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Fix completely broken get_ty_pts (it's an ordinary MPEG timestamp) 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24481 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2007-09-14 17:39:48 +00:00
parent d967a56ee6
commit 29e529c873
1 changed files with 10 additions and 14 deletions
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24
libmpdemux/demux_ty.c
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@ -45,6 +45,7 @@
#include "stheader.h"
#include "sub_cc.h"
#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
extern void skip_audio_frame( sh_audio_t *sh_audio );
extern int sub_justify;
@ -354,21 +355,16 @@ static int IsValidAudioPacket( int size, int *ptsOffset, int *ptsLen )
static float get_ty_pts( unsigned char *buf )
{
float result = 0;
unsigned char temp;
int a = buf[0] & 0xe;
int b = AV_RB16(buf + 1);
int c = AV_RB16(buf + 3);
uint64_t pts;
temp = ( buf[ 0 ] & 0xE ) >> 1;
result = ( (float) temp ) * ( (float) ( 1L << 30 ) ) / ( (float)PTS_KHZ );
temp = buf[ 1 ];
result += ( (float) temp ) * ( (float) ( 1L << 22 ) ) / ( (float)PTS_KHZ );
temp = ( buf[ 2 ] & 0xFE ) >> 1;
result += ( (float) temp ) * ( (float) ( 1L << 15 ) ) / ( (float)PTS_KHZ );
temp = buf[ 3 ];
result += ( (float) temp ) * ( (float) ( 1L << 7 ) ) / ( (float)PTS_KHZ );
temp = ( buf[ 4 ] & 0xFE ) >> 1;
result += ( (float) temp ) / ( (float)PTS_MHZ );
return result;
if (!(1 & a & b & c)) // invalid MPEG timestamp
return 0;
a >>= 1; b >>= 1; c >>= 1;
pts = (((uint64_t)a) << 30) | (b << 15) | c;
return (float)pts / PTS_KHZ;
}
static void demux_ty_AddToAudioBuffer( TiVoInfo *tivo, unsigned char *buffer,