Initial dct modules with dummy main.

forward dct compiles cleanly. Needs to be verified if working.
inverse dct needs some type fixing (from original libjpeg).

1 files changed, 11 insertions, 0 deletions

diff --git a/include/dct.h b/include/dct.h
new file mode 100644
index 0000000..d202de5
--- /dev/null
+++ b/include/dct.h
@@ -0,0 +1,11 @@
+#define CONST_BITS  8
+#define DCTSIZE 8
+#define DCTSIZE_BLOCK (DCTSIZE * DCTSIZE)
+
+#define RIGHT_SHIFT(x,shft)	((x) >> (shft))
+
+#define DESCALE(x,n)	RIGHT_SHIFT((x) + (1 << ((n)-1)), n)
+
+#define MULTIPLY(var,constant)	(DESCALE((var) * (constant), CONST_BITS))
+
+void fdct(int *data);