Initial-checkin for ON2 Software AVC/H264 decoder

o when neon is present, the performance gain of On2 AVC software decoder
  over PV software decoder is more than 30%.

o In addition, it fixes some known PV software decoder issues like missing
  output frames

o allow both pv and on2 software avc to be available for easy comparision

o change output frames from 8 to 16

Change-Id: I567ad1842025ead7092f0c47e3513d6d9ca232dd

1 files changed, 88 insertions, 0 deletions

diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_PredictIntraDC4x4.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_PredictIntraDC4x4.c
new file mode 100644
index 0000000..b713073
--- /dev/null
+++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/armVCM4P10_PredictIntraDC4x4.c
@@ -0,0 +1,88 @@
+/* ----------------------------------------------------------------
+ *
+ * 
+ * File Name:  armVCM4P10_PredictIntraDC4x4.c
+ * OpenMAX DL: v1.0.2
+ * Revision:   9641
+ * Date:       Thursday, February 7, 2008
+ * 
+ * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
+ * 
+ * 
+ *
+ * H.264 4x4 intra prediction module
+ * 
+ */
+ 
+#include "omxtypes.h"
+#include "armOMX.h"
+#include "omxVC.h"
+
+#include "armCOMM.h"
+#include "armVC.h"
+
+/*
+ * Description:
+ * Perform DC style intra prediction, averaging upper and left block
+ *
+ * Parameters:
+ * [in]	pSrcLeft		Pointer to the buffer of 16 left coefficients:
+ *								p[x, y] (x = -1, y = 0..3)
+ * [in]	pSrcAbove		Pointer to the buffer of 16 above coefficients:
+ *								p[x,y] (x = 0..3, y = -1)
+ * [in]	leftStep		Step of left coefficient buffer
+ * [in]	dstStep			Step of the destination buffer
+ * [in]	availability	Neighboring 16x16 MB availability flag
+ * [out]	pDst			Pointer to the destination buffer
+ *
+ * Return Value:
+ * None
+ */
+
+void armVCM4P10_PredictIntraDC4x4(
+     const OMX_U8* pSrcLeft,
+     const OMX_U8 *pSrcAbove,
+     OMX_U8* pDst,
+     OMX_INT leftStep,
+     OMX_INT dstStep,
+     OMX_S32 availability        
+)
+{
+    int x, y, Sum=0, Count = 0;
+
+    if (availability & OMX_VC_LEFT)
+    {
+        for (y=0; y<4; y++)
+        {
+            Sum += pSrcLeft[y*leftStep];
+        }
+        Count++;
+    }
+    if (availability & OMX_VC_UPPER)
+    {
+        for (x=0; x<4; x++)
+        {
+            Sum += pSrcAbove[x];
+        }
+        Count++;
+    }
+    if (Count==0)
+    {
+        Sum = 128;
+    }
+    else if (Count==1)
+    {
+        Sum = (Sum + 2) >> 2;
+    }
+    else /* Count = 2 */
+    {
+        Sum = (Sum + 4) >> 3;
+    }
+    for (y=0; y<4; y++)
+    {
+        for (x=0; x<4; x++)
+        {
+            pDst[y*dstStep+x] = (OMX_U8)Sum;
+        }
+    }
+}