1 files changed, 78 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_UnpackBlock4x4.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_UnpackBlock4x4.c
new file mode 100644
index 0000000..3c0dcbd
--- /dev/null
+++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_UnpackBlock4x4.c
@@ -0,0 +1,78 @@
+/* ----------------------------------------------------------------
+ *
+ * 
+ * File Name:  armVCM4P10_UnpackBlock4x4.c
+ * OpenMAX DL: v1.0.2
+ * Revision:   9641
+ * Date:       Thursday, February 7, 2008
+ * 
+ * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
+ * 
+ * 
+ *
+ * H.264 inverse quantize and transform helper module
+ * 
+ */
+ 
+#include "omxtypes.h"
+#include "armOMX.h"
+#include "omxVC.h"
+
+#include "armVC.h"
+
+/*
+ * Description
+ * Unpack a 4x4 block of coefficient-residual pair values
+ *
+ * Parameters:
+ * [in]	ppSrc	Double pointer to residual coefficient-position pair
+ *						buffer output by CALVC decoding
+ * [out]	ppSrc	*ppSrc is updated to the start of next non empty block
+ * [out]	pDst	Pointer to unpacked 4x4 block
+ */
+
+void armVCM4P10_UnpackBlock4x4(
+     const OMX_U8 **ppSrc,
+     OMX_S16* pDst
+)
+{
+    const OMX_U8 *pSrc = *ppSrc;
+    int i;
+    int Flag, Value;
+
+    for (i=0; i<16; i++)
+    {
+        pDst[i] = 0;
+    }
+
+    do
+    {
+        Flag  = *pSrc++;
+        if (Flag & 0x10)
+        {
+            /* 16 bit */
+            Value = *pSrc++;
+            Value = Value | ((*pSrc++)<<8);
+            if (Value & 0x8000)
+            {
+                Value -= 0x10000;
+            }
+        }
+        else
+        {
+            /* 8 bit */
+            Value = *pSrc++;
+            if (Value & 0x80)
+            {
+                Value -= 0x100;
+            }
+        }
+        i = Flag & 15;
+        pDst[i] = (OMX_S16)Value;
+    }
+    while ((Flag & 0x20)==0);
+
+    *ppSrc = pSrc;
+}
+
+/* End of file */