1 files changed, 57 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp8/common/invtrans.h b/media/libvpx/libvpx/vp8/common/invtrans.h
new file mode 100644
index 0000000000..aed7bb0600
--- /dev/null
+++ b/media/libvpx/libvpx/vp8/common/invtrans.h
@@ -0,0 +1,57 @@
+/*
+ *  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 VPX_VP8_COMMON_INVTRANS_H_
+#define VPX_VP8_COMMON_INVTRANS_H_
+
+#include "./vpx_config.h"
+#include "vp8_rtcd.h"
+#include "blockd.h"
+#include "onyxc_int.h"
+
+#if CONFIG_MULTITHREAD
+#include "vpx_mem/vpx_mem.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#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 INLINE 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);
+}
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VPX_VP8_COMMON_INVTRANS_H_