--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/h263decoder/inc/blkfunc.h	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,143 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - Initial contribution
+*
+* Contributors:
+* Ixonos Plc
+*
+* Description:  
+* Header file for block handling functions.
+*
+*/
+
+
+
+#ifndef __BLKFUNC_H
+#define __BLKFUNC_H
+
+#include "epoclib.h"
+
+// General-purpose clip tables for signed and unsigned chars.
+// Both of these tables range from -2048 to +2047.
+
+extern const u_char unsignedCharClip[];
+extern const char signedCharClip[]; // MH
+
+/*
+ *
+ * blcAddBlock
+ *
+ * Parameters:
+ *    block                block array
+ *    frame_p              pointer to present frame in the place,
+ *                         where the block is added
+ *    xSize                X size of the frame.
+ *    mbPlace              flag that indicates the place for the current
+ *                         macroblock inside the macroblock row:
+ *                            -1 beginning of row
+ *                             0 middle of row
+ *                             1 end of row
+ *    fourMVs              1 if Advanced Prediction Mode is used, otherwise 0
+ *    prevDiffBlock        if fourMVs == 1 and mbPlace <= 0 the difference
+ *                         block is stored to prevDiffBlock for later use
+ *
+ * Function:
+ *    This function sums the given block into block being currently decoded in
+ *    present frame. Parameters are the table consisting a block, a pointer to
+ *    the frame at the correct place and the width of the frame.
+ *
+ * Returns:
+ *    Nothing.
+ *
+ * Error codes:
+ *    None.
+ *
+ */
+
+void __cdecl blcAddBlockAsm(int *block, u_char *frame_p, int xSize,
+   int mbPlace, u_char fourMVs, int *prevDiffBlock);
+
+/*
+ *
+ * blcMixBlocks
+ *
+ * Parameters:
+ *    dest        Destination pointer
+ *    src         Source pointer
+ *    yn          Y size of the block
+ *    xn          X size of the block (0-16)
+ *    ydiff       X line length of the destination block
+ *    sydiff      X line length of the source block
+ *
+ * Function:
+ *    This function replaces all the pixels in the destination block with
+ *    an average calculated from the corresponding source and destination
+ *    block pixels.
+ *
+ * Returns:
+ *    Nothing.
+ *
+ * Error codes:
+ *    None.
+ *
+ */
+
+void __cdecl blcMixBlocks( u_char *dest, u_char *src, int yn, int xn,
+   int ydiff, int sydiff );
+
+/*
+ *
+ * blcMixOverlapped
+ *
+ * Parameters:
+ *    blkBuf      Source blocks:
+ *                64b whole, 32b left, 32b right, 32b up, 32b down
+ *    dest        Destination pointer
+ *    ddelta      Delta for destination lines
+ *
+ * Function:
+ *    Calculates weighted averages of several macroblock pieces - see
+ *    function blcOverlappedMC in block.c for more detailed description.
+ *
+ * Returns:
+ *    Nothing.
+ *
+ * Error codes:
+ *    None.
+ *
+ */
+
+void __cdecl blcMixOverlapped( u_char *blkBuf, u_char *dest, int ddelta );
+
+/*
+ *
+ * blcInvQuant
+ *
+ * Parameters:
+ *    block       Block pointer
+ *    quant       Quantization value
+ *    count       Number of values to process
+ *
+ * Function:
+ *    Does inverse quantization for a block for idct.
+ *
+ * Returns:
+ *    Nothing.
+ *
+ * Error codes:
+ *    None.
+ *
+ */
+
+void __cdecl blcInvQuant( int *block, int quant, int count );
+
+#endif
+
+// End of File