dds/etc1/pbm/pvr: Make those modules and split thirdparty files

They are not particularly packaged in Linux distros so we do not
facilitate unbundling via SCons. There could be done if/when there
is interest.

Also s/pnm/pbm/, long-lived typo :)

1 files changed, 19 insertions, 0 deletions

diff --git a/thirdparty/pvrtccompressor/BitUtility.h b/thirdparty/pvrtccompressor/BitUtility.h
new file mode 100644
index 000000000..588ff3e89
--- /dev/null
+++ b/thirdparty/pvrtccompressor/BitUtility.h
@@ -0,0 +1,19 @@
+#pragma once
+
+namespace Javelin {
+
+class BitUtility {
+public:
+    static bool IsPowerOf2(unsigned int x) {
+        return (x & (x - 1)) == 0;
+    }
+
+    static unsigned int RotateRight(unsigned int value, unsigned int shift) {
+        if ((shift &= sizeof(value) * 8 - 1) == 0) {
+            return value;
+        }
+        return (value >> shift) | (value << (sizeof(value) * 8 - shift));
+    }
+};
+
+}