remove PicoDrive-specific stuff, add readme

[libpicofe.git] / common / mp3.c

diff --git a/common/mp3.c b/common/mp3.c
deleted file mode 100644 (file)
index b00a5fb..0000000
--- a/common/mp3.c
+++ /dev/null
@@ -1,29 +0,0 @@
-#include "mp3.h"
-
-int mp3_find_sync_word(const unsigned char *buf, int size)
-{
-       const unsigned char *p, *pe;
-
-       /* find byte-aligned syncword - need 12 (MPEG 1,2) or 11 (MPEG 2.5) matching bits */
-       for (p = buf, pe = buf + size - 3; p <= pe; p++)
-       {
-               int pn;
-               if (p[0] != 0xff)
-                       continue;
-               pn = p[1];
-               if ((pn & 0xf8) != 0xf8 || // currently must be MPEG1
-                   (pn & 6) == 0) {       // invalid layer
-                       p++; continue;
-               }
-               pn = p[2];
-               if ((pn & 0xf0) < 0x20 || (pn & 0xf0) == 0xf0 || // bitrates
-                   (pn & 0x0c) != 0) { // not 44kHz
-                       continue;
-               }
-
-               return p - buf;
-       }
-
-       return -1;
-}
-