Imported Upstream version 1.1.1upstream/1.1.1

1 files changed, 25 insertions, 0 deletions

diff --git a/util/scan/section.c b/util/scan/section.c
new file mode 100644
index 0000000..8e49947
--- /dev/null
+++ b/util/scan/section.c
@@ -0,0 +1,25 @@
+#include "section.h"
+
+/* shamelessly stolen from dvbsnoop, but modified */
+u32 getBits (const u8 *buf, int startbit, int bitlen)
+{
+	const u8 *b;
+	u32 mask,tmp_long;
+	int bitHigh,i;
+
+	b = &buf[startbit / 8];
+	startbit %= 8;
+
+	bitHigh = 8;
+	tmp_long = b[0];
+	for (i = 0; i < ((bitlen-1) >> 3); i++) {
+		tmp_long <<= 8;
+		tmp_long  |= b[i+1];
+		bitHigh   += 8;
+	}
+
+	startbit = bitHigh - startbit - bitlen;
+	tmp_long = tmp_long >> startbit;
+	mask     = (1ULL << bitlen) - 1;
+	return tmp_long & mask;
+}