1 files changed, 62 insertions, 0 deletions
diff --git a/libvpx/vp8/common/invtrans.h b/libvpx/vp8/common/invtrans.h
new file mode 100644
index 0000000..d048665
--- /dev/null
+++ b/libvpx/vp8/common/invtrans.h
@@ -0,0 +1,62 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+
+#ifndef __INC_INVTRANS_H
+#define __INC_INVTRANS_H
+
+#include "vpx_config.h"
+#include "vpx_rtcd.h"
+#include "blockd.h"
+#include "onyxc_int.h"
+
+#if CONFIG_MULTITHREAD
+#include "vpx_mem/vpx_mem.h"
+#endif
+
+static void eob_adjust(char *eobs, short *diff)
+{
+    /* eob adjust.... the idct can only skip if both the dc and eob are zero */
+    int js;
+    for(js = 0; js < 16; js++)
+    {
+        if((eobs[js] == 0) && (diff[0] != 0))
+            eobs[js]++;
+        diff+=16;
+    }
+}
+
+static void vp8_inverse_transform_mby(MACROBLOCKD *xd)
+{
+    short *DQC = xd->dequant_y1;
+
+    if (xd->mode_info_context->mbmi.mode != SPLITMV)
+    {
+        /* do 2nd order transform on the dc block */
+        if (xd->eobs[24] > 1)
+        {
+            vp8_short_inv_walsh4x4
+                (&xd->block[24].dqcoeff[0], xd->qcoeff);
+        }
+        else
+        {
+            vp8_short_inv_walsh4x4_1
+                (&xd->block[24].dqcoeff[0], xd->qcoeff);
+        }
+        eob_adjust(xd->eobs, xd->qcoeff);
+
+        DQC = xd->dequant_y1_dc;
+    }
+    vp8_dequant_idct_add_y_block
+                    (xd->qcoeff, DQC,
+                     xd->dst.y_buffer,
+                     xd->dst.y_stride, xd->eobs);
+}
+#endif