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, 84 insertions, 0 deletions

diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c
new file mode 100644
index 0000000..1712c3a
--- /dev/null
+++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c
@@ -0,0 +1,84 @@
+/**
+ * 
+ * File Name:  armVCM4P2_FillVLDBuffer.c
+ * OpenMAX DL: v1.0.2
+ * Revision:   9641
+ * Date:       Thursday, February 7, 2008
+ * 
+ * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
+ * 
+ * 
+ * 
+ * Description:
+ * Contains module for VLC get bits from the stream 
+ *
+ */ 
+
+#include "omxtypes.h"
+#include "armOMX.h"
+
+#include "armVCM4P2_ZigZag_Tables.h"
+
+
+/**
+ * Function: armVCM4P2_FillVLDBuffer
+ *
+ * Description:
+ * Performs filling of the coefficient buffer according to the run, level
+ * and sign, also updates the index
+ * 
+ * Parameters:
+ * [in]  storeRun        Stored Run value (count of zeros)   
+ * [in]  storeLevel      Stored Level value (non-zero value)
+ * [in]  sign            Flag indicating the sign of level
+ * [in]  last            status of the last flag
+ * [in]  pIndex          pointer to coefficient index in 8x8 matrix
+ * [out] pIndex          pointer to updated coefficient index in 8x8 
+ *                       matrix
+ * [in]  pZigzagTable    pointer to the zigzag tables
+ * [out] pDst            pointer to the coefficient buffer of current
+ *                       block. Should be 32-bit aligned
+ * Return Value:
+ * Standard OMXResult result. See enumeration for possible result codes.
+ *
+ */
+
+OMXResult armVCM4P2_FillVLDBuffer(
+    OMX_U32 storeRun,
+    OMX_S16 * pDst,
+    OMX_S16 storeLevel,
+    OMX_U8  sign,
+    OMX_U8  last,
+    OMX_U8  * pIndex,
+    const OMX_U8 * pZigzagTable
+)
+{
+    /* Store the zero's as per the run length count */
+    for (;storeRun > 0; storeRun--, (*pIndex)++)
+    {
+        pDst[pZigzagTable[*pIndex]] = 0;
+    }
+    /* Store the level depending on the sign*/
+    if (sign == 1)
+    {
+        pDst[pZigzagTable[*pIndex]] = -storeLevel;
+    }
+    else
+    {
+        pDst[pZigzagTable[*pIndex]] = storeLevel;
+    }
+    (*pIndex)++;
+
+    /* If last is 1, fill the remaining elments of the buffer with zeros */
+    if (last == 1)
+    {
+        while (*pIndex < 64)
+        {
+            pDst[pZigzagTable[*pIndex]] = 0;
+            (*pIndex)++;
+        }
+    }
+
+    return OMX_Sts_NoErr;
+}
+