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, 68 insertions, 0 deletions

diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/omxVCM4P10_DecodeCoeffsToPairCAVLC.c b/media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/omxVCM4P10_DecodeCoeffsToPairCAVLC.c
new file mode 100755
index 0000000..b29e576
--- /dev/null
+++ b/media/libstagefright/codecs/on2/h264dec/omxdl/arm_neon/vc/m4p10/src/omxVCM4P10_DecodeCoeffsToPairCAVLC.c
@@ -0,0 +1,68 @@
+/* ----------------------------------------------------------------
+ *
+ * 
+ * File Name:  omxVCM4P10_DecodeCoeffsToPairCAVLC.c
+ * OpenMAX DL: v1.0.2
+ * Revision:   12290
+ * Date:       Wednesday, April 9, 2008
+ * 
+ * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
+ * 
+ * 
+ *
+ * H.264 decode coefficients module
+ * 
+ */
+ 
+#include "omxtypes.h"
+#include "armOMX.h"
+#include "omxVC.h"
+
+#include "armCOMM.h"
+#include "armVC.h"
+
+/**
+ * Function: omxVCM4P10_DecodeCoeffsToPairCAVLC
+ *
+ * Description:
+ * Performs CAVLC decoding and inverse zigzag scan for 4x4 block of 
+ * Intra16x16DCLevel, Intra16x16ACLevel,LumaLevel, and ChromaACLevel. 
+ * Inverse field scan is not supported. The decoded coefficients in packed 
+ * position-coefficient buffer are stored in increasing zigzag order instead 
+ * of position order.
+ *
+ * Remarks:
+ *
+ * Parameters:
+ * [in]	ppBitStream		Double pointer to current byte in bit stream buffer
+ * [in]	pOffset			Pointer to current bit position in the byte pointed
+ *								to by *ppBitStream
+ * [in]	sMaxNumCoeff	Maximum number of non-zero coefficients in current
+ *								block
+ * [in]	sVLCSelect		VLC table selector, obtained from number of non-zero
+ *								AC coefficients of above and left 4x4 blocks. It is 
+ *								equivalent to the variable nC described in H.264 standard 
+ *								table 9-5, except its value can¡¯t be less than zero.
+ * [out]	ppBitStream		*ppBitStream is updated after each block is decoded
+ * [out]	pOffset			*pOffset is updated after each block is decoded
+ * [out]	pNumCoeff		Pointer to the number of nonzero coefficients in
+ *								this block
+ * [out]	ppPosCoefbuf	Double pointer to destination residual
+ *								coefficient-position pair buffer
+ * Return Value:
+ * Standard omxError result. See enumeration for possible result codes.
+ *
+ */
+
+OMXResult omxVCM4P10_DecodeCoeffsToPairCAVLC(
+     const OMX_U8** ppBitStream,
+     OMX_S32* pOffset,
+     OMX_U8* pNumCoeff,
+     OMX_U8**ppPosCoefbuf,
+     OMX_INT sVLCSelect,
+     OMX_INT sMaxNumCoeff        
+ )
+{
+    return armVCM4P10_DecodeCoeffsToPair(ppBitStream, pOffset, pNumCoeff,
+                                         ppPosCoefbuf, sVLCSelect, sMaxNumCoeff);
+}