1 files changed, 102 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/m4p2/src/omxVCM4P2_DecodeBlockCoef_Inter.c b/media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/m4p2/src/omxVCM4P2_DecodeBlockCoef_Inter.c
new file mode 100644
index 0000000..b63d295
--- /dev/null
+++ b/media/libstagefright/codecs/on2/h264dec/omxdl/arm11/vc/m4p2/src/omxVCM4P2_DecodeBlockCoef_Inter.c
@@ -0,0 +1,102 @@
+/**
+ * 
+ * File Name:  omxVCM4P2_DecodeBlockCoef_Inter.c
+ * OpenMAX DL: v1.0.2
+ * Revision:   9641
+ * Date:       Thursday, February 7, 2008
+ * 
+ * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved.
+ * 
+ * 
+ *
+ * Description: 
+ * Contains modules for inter reconstruction
+ * 
+ */
+ 
+
+#include "omxtypes.h"
+#include "armOMX.h"
+#include "omxVC.h"
+
+#include "armCOMM.h"
+
+
+/**
+ * Function: omxVCM4P2_DecodeBlockCoef_Inter
+ *
+ * Description:
+ * Decodes the INTER block coefficients. Inverse quantization, inversely zigzag
+ * positioning and IDCT, with appropriate clipping on each step, are performed
+ * on the coefficients. The results (residuals) are placed in a contiguous array
+ * of 64 elements. For INTER block, the output buffer holds the residuals for
+ * further reconstruction.
+ *
+ * Remarks:
+ *
+ * Parameters:
+ * [in]	ppBitStream		pointer to the pointer to the current byte in
+ *								the bit stream buffer. There is no boundary
+ *								check for the bit stream buffer.
+ * [in]	pBitOffset		pointer to the bit position in the byte pointed
+ *								to by *ppBitStream. *pBitOffset is valid within
+ *								[0-7]
+ * [in]	QP				quantization parameter
+ * [in] shortVideoHeader    a flag indicating presence of short_video_header;
+ *                           shortVideoHeader==1 indicates using quantization method defined in short
+ *                           video header mode, and shortVideoHeader==0 indicates normail quantization method.
+ * [out] ppBitStream 	*ppBitStream is updated after the block is decoded, so that it points to the
+ *                      current byte in the bit stream buffer.
+ * [out] pBitOffset		*pBitOffset is updated so that it points to the current bit position in the
+ *                      byte pointed by *ppBitStream
+ * [out] pDst			pointer to the decoded residual buffer (a contiguous array of 64 elements of
+ *                      OMX_S16 data type). Must be 16-byte aligned.
+ *
+ * Return Value:
+ * OMX_Sts_NoErr - no error
+ * OMX_Sts_BadArgErr - bad arguments
+ *   - At least one of the following pointers is Null: ppBitStream, *ppBitStream, pBitOffset , pDst
+ *   - At least one of the below case:
+ *   - *pBitOffset exceeds [0,7], QP <= 0;
+ *	 - pDst not 16-byte aligned
+ * OMX_Sts_Err - status error
+ *
+ */
+OMXResult omxVCM4P2_DecodeBlockCoef_Inter(
+     const OMX_U8 ** ppBitStream,
+     OMX_INT * pBitOffset,
+     OMX_S16 * pDst,
+     OMX_INT QP,
+     OMX_INT shortVideoHeader
+)
+{
+    /* 64 elements are needed but to align it to 16 bytes need
+    15 more elements of padding */
+    OMX_S16 tempBuf[79];
+    OMX_S16 *pTempBuf1;
+    OMXResult errorCode;
+    /* Aligning the local buffers */
+    pTempBuf1 = armAlignTo16Bytes(tempBuf);
+    
+    
+    /* VLD and zigzag */
+    errorCode = omxVCM4P2_DecodeVLCZigzag_Inter(ppBitStream, pBitOffset, 
+                                        pTempBuf1,shortVideoHeader);
+    armRetDataErrIf((errorCode != OMX_Sts_NoErr), errorCode);
+    
+    /* Dequantization */
+    errorCode = omxVCM4P2_QuantInvInter_I(
+     pTempBuf1,
+     QP);
+    armRetDataErrIf((errorCode != OMX_Sts_NoErr), errorCode);
+    
+    /* Inverse transform */
+    errorCode = omxVCM4P2_IDCT8x8blk(pTempBuf1, pDst);
+    armRetDataErrIf((errorCode != OMX_Sts_NoErr), errorCode);
+	    
+    return OMX_Sts_NoErr;
+}
+
+/* End of file */
+
+