Add image computing oriented builtin functions
The new built-in functions covers inverse DCT, ADST and walsh transforms.
Change-Id: Ie7044da4a5becf2cc80d066a258211721a5939d4
diff --git a/scriptc/rs_iadst.rsh b/scriptc/rs_iadst.rsh
new file mode 100644
index 0000000..dad396c
--- /dev/null
+++ b/scriptc/rs_iadst.rsh
@@ -0,0 +1,14 @@
+#ifndef __RS_IADST_RSH__
+#define __RS_IADST_RSH__
+
+#if RS_VERSION > 19
+
+extern void iadst4(const rs_allocation input, rs_allocation output, int32_t xoff);
+
+extern void iadst8(const rs_allocation input, rs_allocation output, int32_t xoff);
+
+extern void iadst16(const rs_allocation input, rs_allocation output, int32_t xoff);
+
+#endif
+
+#endif
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