mp_mp3_get_lsf() added - to get decomp. frame size

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5807 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 12 insertions, 0 deletions

diff --git a/libmpdemux/mp3_hdr.c b/libmpdemux/mp3_hdr.c
index b2ac948b5b..78ed2fc0a1 100644
--- a/libmpdemux/mp3_hdr.c
+++ b/libmpdemux/mp3_hdr.c
@@ -16,6 +16,18 @@ static int tabsel_123[2][3][16] = {
 };
 static long freqs[9] = { 44100, 48000, 32000, 22050, 24000, 16000 , 11025 , 12000 , 8000 };
 
+int mp_mp3_get_lsf(unsigned char* hbuf){
+    unsigned long newhead = 
+      hbuf[0] << 24 |
+      hbuf[1] << 16 |
+      hbuf[2] <<  8 |
+      hbuf[3];
+    if( newhead & ((long)1<<20) ) {
+      return (newhead & ((long)1<<19)) ? 0x0 : 0x1;
+    }
+    return 1;
+}
+
 /*
  * return frame size or -1 (bad frame)
  */