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authoretobi <git@e-tobi.net>2013-09-03 09:48:40 +0200
committeretobi <git@e-tobi.net>2013-09-03 09:48:40 +0200
commit6b350466c4902c5b137e0efaf1d189128a7f18f5 (patch)
treea7cf91f9896c0f8c9d8b291114e51f1373940c70 /util/scan/section.c
parent6e40287e2f39a80fc72bd8d0fbc1a8334d688c2d (diff)
downloadlinux-dvb-apps-6b350466c4902c5b137e0efaf1d189128a7f18f5.tar.gz
Imported Upstream version 1.1.1upstream/1.1.1
Diffstat (limited to '')
-rw-r--r--util/scan/section.c25
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;
+}