(61d00a474) v0.9.7.1

Libraries/webm_mem_playback/libvpx/vp8/common/mbpitch.c

@@ -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.
+ */
+
+#include "blockd.h"
+
+void vp8_setup_block_dptrs(MACROBLOCKD *x) {
+  int r, c;
+
+  for (r = 0; r < 4; ++r) {
+    for (c = 0; c < 4; ++c) {
+      x->block[r * 4 + c].predictor = x->predictor + r * 4 * 16 + c * 4;
+    }
+  }
+
+  for (r = 0; r < 2; ++r) {
+    for (c = 0; c < 2; ++c) {
+      x->block[16 + r * 2 + c].predictor =
+          x->predictor + 256 + r * 4 * 8 + c * 4;
+    }
+  }
+
+  for (r = 0; r < 2; ++r) {
+    for (c = 0; c < 2; ++c) {
+      x->block[20 + r * 2 + c].predictor =
+          x->predictor + 320 + r * 4 * 8 + c * 4;
+    }
+  }
+
+  for (r = 0; r < 25; ++r) {
+    x->block[r].qcoeff = x->qcoeff + r * 16;
+    x->block[r].dqcoeff = x->dqcoeff + r * 16;
+    x->block[r].eob = x->eobs + r;
+  }
+}
+
+void vp8_build_block_doffsets(MACROBLOCKD *x) {
+  int block;
+
+  for (block = 0; block < 16; ++block) /* y blocks */
+  {
+    x->block[block].offset =
+        (block >> 2) * 4 * x->dst.y_stride + (block & 3) * 4;
+  }
+
+  for (block = 16; block < 20; ++block) /* U and V blocks */
+  {
+    x->block[block + 4].offset = x->block[block].offset =
+        ((block - 16) >> 1) * 4 * x->dst.uv_stride + (block & 1) * 4;
+  }
+}