mirror of
https://github.com/gryf/gryf-overlay.git
synced 2026-01-04 21:04:18 +01:00
48 lines
1.5 KiB
Diff
48 lines
1.5 KiB
Diff
diff -urp xmms-mad-0.8-org/src/xmms-mad.c xmms-mad-0.8/src/xmms-mad.c
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--- xmms-mad-0.8-org/src/xmms-mad.c 2005-12-04 23:18:21.000000000 +0200
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+++ xmms-mad-0.8/src/xmms-mad.c 2005-12-04 23:34:53.000000000 +0200
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@@ -76,6 +76,31 @@ xmmsmad_set_eq (int on, float preamp, fl
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//printf("set_eq\n");
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}
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+
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+/* Following mp3 header check has been copied from XMMS mp3 input plugin. */
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+static int mpg123_head_check(unsigned char *buffer)
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+{
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+ unsigned int head = (buffer[0] << 24) + (buffer[1] << 16) + (buffer[2] << 8) + buffer[3];
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+ if ((head & 0xffe00000) != 0xffe00000)
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+ return FALSE;
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+ if (!((head >> 17) & 3))
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+ return FALSE;
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+ if (((head >> 12) & 0xf) == 0xf)
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+ return FALSE;
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+ if (!((head >> 12) & 0xf))
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+ return FALSE;
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+ if (((head >> 10) & 0x3) == 0x3)
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+ return FALSE;
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+ if (((head >> 19) & 1) == 1 &&
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+ ((head >> 17) & 3) == 3 &&
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+ ((head >> 16) & 1) == 1)
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+ return FALSE;
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+ if ((head & 0xffff0000) == 0xfffe0000)
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+ return FALSE;
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+ return TRUE;
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+}
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+
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+
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static int
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xmmsmad_is_our_file (char *filename)
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{
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@@ -96,9 +121,8 @@ xmmsmad_is_our_file (char *filename)
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fin = open (filename, O_RDONLY);
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if (fin >= 0 && read (fin, check, 4) == 4)
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{
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- /* If first two bytes are a sync header or three bytes are "ID3" */
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- if ( (check[0] == 0xff && (check[1] & 0x70) == 0x70)
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- || memcmp (check, "ID3", 3) == 0)
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+ /* If first 4 bytes are a sync header or three bytes are "ID3" */
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+ if (mpg123_head_check(check) || memcmp (check, "ID3", 3) == 0)
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{
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rtn = 1;
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}
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