diff -r 000000000000 -r 951a5db380a0 videoeditorengine/avcedit/src/invtransform.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/avcedit/src/invtransform.cpp	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,199 @@
+/*
+* 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:
+*
+*/
+
+
+#include "globals.h"
+#include "invtransform.h"
+
+
+#ifndef AVC_RECO_BLOCK_ASM
+
+/*
+ *
+ * itrIDCTdequant4x4:
+ *
+ * Parameters:
+ *      src                   Source values
+ *      dest                  Inverse transformed values
+ *      dequantPtr            Dequant coefficients
+ *      qp_per                qp/6
+ *      isDc                  True if DC is separate
+ *      dcValue               Possible DC value
+ *
+ * Function:
+ *      Dequantize coefficients and compute approximate 4x4 inverse DCT.
+ *
+ * Returns:
+ *      -
+ */
+void itrIDCTdequant4x4(int src[4][4], int dest[4][4], const int *dequantPtr,
+                       int qp_per, int isDc, int dcValue)
+{
+  int tmp[4][4];
+  int A, B, C, D, E, F;
+  int i;
+  int deqc;
+
+  /*
+   *  a = A + B + C + (D>>1)
+   *  b = A + (B>>1) - C - D
+   *  c = A - (B>>1) - C + D
+   *  d = A - B + C - (D>>1)
+   *   =>
+   *  E = A + C
+   *  F = B +  (D>>1)
+   *  a = E + F
+   *  d = E - F
+   *  E = A - C
+   *  F = (B>>1) - D
+   *  b = E + F
+   *  c = E - F
+   */
+
+  A = dcValue;
+
+  for (i = 0; i < 4; i++) {
+    deqc = (*dequantPtr++) << qp_per;
+
+    if (!isDc)
+      A = src[i][0] * deqc;
+
+    C = src[i][2] * deqc;
+
+    deqc = (*dequantPtr++) << qp_per;
+
+    B = src[i][1] * deqc;
+    D = src[i][3] * deqc;
+
+    E = A +  C;
+    F = B + (D>>1);
+    tmp[i][0] = E + F;
+    tmp[i][3] = E - F;
+    E =  A     - C;
+    F = (B>>1) - D;
+    tmp[i][1] = E + F;
+    tmp[i][2] = E - F;
+
+    isDc = 0;
+  }
+
+  for (i = 0; i < 4; i++) {
+    E = tmp[0][i] +  tmp[2][i];
+    F = tmp[1][i] + (tmp[3][i]>>1);
+    dest[0][i] = E + F;
+    dest[3][i] = E - F;
+    E =  tmp[0][i]     - tmp[2][i];
+    F = (tmp[1][i]>>1) - tmp[3][i];
+    dest[1][i] = E + F;
+    dest[2][i] = E - F;
+  }
+}
+
+#endif
+
+
+/*
+ *
+ * itrIHadaDequant4x4:
+ *
+ * Parameters:
+ *      src                   Source values
+ *      dest                  Inverse transformed values
+ *      deqc                  Dequantization coefficient
+ *
+ * Function:
+ *      Compute 4x4 inverse Hadamard transform and dequantize coefficients.
+ *
+ * Returns:
+ *      -
+ *
+ */
+void itrIHadaDequant4x4(int src[4][4], int dest[4][4], int deqc)
+{
+  int tmp[4][4];
+  int E;
+  int F;
+  int i;
+
+  for (i = 0; i < 4; i++) {
+    E = src[i][0] + src[i][2];
+    F = src[i][1] + src[i][3];
+    tmp[i][0] = E + F;
+    tmp[i][3] = E - F;
+    E = src[i][0] - src[i][2];
+    F = src[i][1] - src[i][3];
+    tmp[i][1] = E + F;
+    tmp[i][2] = E - F;
+  }
+
+  for (i = 0; i < 4; i++) {
+    E = tmp[0][i] + tmp[2][i];
+    F = tmp[1][i] + tmp[3][i];
+    dest[0][i] = ((E + F) * deqc + 2) >> 2;
+    dest[3][i] = ((E - F) * deqc + 2) >> 2;
+    E = tmp[0][i] - tmp[2][i];
+    F = tmp[1][i] - tmp[3][i];
+    dest[1][i] = ((E + F) * deqc + 2) >> 2;
+    dest[2][i] = ((E - F) * deqc + 2) >> 2;
+  }
+}
+
+
+/*
+ *
+ * itrIDCTdequant2x2:
+ *
+ * Parameters:
+ *      src                   Source values
+ *      dest                  Inverse transformed values
+ *      deqc                  Dequantization coefficient
+ *
+ * Function:
+ *      Compute 2x2 inverse DCT and dequantize coefficients.
+ *
+ * Returns:
+ *      -
+ *
+ */
+void itrIDCTdequant2x2(int src[2][2], int dest[2][2], int deqc)
+{
+  int DDC00 = src[0][0];
+  int DDC10 = src[0][1];
+  int DDC01 = src[1][0];
+  int DDC11 = src[1][1];
+  int A, B;
+
+  /*
+   *  DDC(0,0) DDC(1,0)  =>  DC0 DC1
+   *  DDC(0,1) DDC(1,1)      DC2 DC3
+   *
+   *  DC0 = (DDC00+DDC10+DDC01+DDC11)
+   *  DC1 = (DDC00-DDC10+DDC01-DDC11)
+   *  DC2 = (DDC00+DDC10-DDC01-DDC11)
+   *  DC3 = (DDC00-DDC10-DDC01+DDC11)
+   */
+
+  A = DDC00 + DDC01;
+  B = DDC10 + DDC11;
+  dest[0][0] = ((A + B) * deqc) >> 1;
+  dest[0][1] = ((A - B) * deqc) >> 1;
+  A = DDC00 - DDC01;
+  B = DDC10 - DDC11;
+  dest[1][0] = ((A + B) * deqc) >> 1;
+  dest[1][1] = ((A - B) * deqc) >> 1;
+}