Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/vp8/common/reconintra4x4.c

+/*
+ *  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 "vpx_config.h"
+#include "vp8_rtcd.h"
+#include "blockd.h"
+
+void vp8_intra4x4_predict_c(unsigned char *Above,
+                            unsigned char *yleft, int left_stride,
+                            int           _b_mode,
+                            unsigned char *dst, int dst_stride,
+                            unsigned char top_left)
+{
+    int i, r, c;
+    B_PREDICTION_MODE b_mode = (B_PREDICTION_MODE)_b_mode;
+    unsigned char Left[4];
+    Left[0] = yleft[0];
+    Left[1] = yleft[left_stride];
+    Left[2] = yleft[2 * left_stride];
+    Left[3] = yleft[3 * left_stride];
+
+    switch (b_mode)
+    {
+    case B_DC_PRED:
+    {
+        int expected_dc = 0;
+
+        for (i = 0; i < 4; i++)
+        {
+            expected_dc += Above[i];
+            expected_dc += Left[i];
+        }
+
+        expected_dc = (expected_dc + 4) >> 3;
+
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+                dst[c] = expected_dc;
+            }
+
+            dst += dst_stride;
+        }
+    }
+    break;
+    case B_TM_PRED:
+    {
+        /* prediction similar to true_motion prediction */
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+                int pred = Above[c] - top_left + Left[r];
+
+                if (pred < 0)
+                    pred = 0;
+
+                if (pred > 255)
+                    pred = 255;
+
+                dst[c] = pred;
+            }
+
+            dst += dst_stride;
+        }
+    }
+    break;
+
+    case B_VE_PRED:
+    {
+
+        unsigned int ap[4];
+        ap[0] = (top_left  + 2 * Above[0] + Above[1] + 2) >> 2;
+        ap[1] = (Above[0] + 2 * Above[1] + Above[2] + 2) >> 2;
+        ap[2] = (Above[1] + 2 * Above[2] + Above[3] + 2) >> 2;
+        ap[3] = (Above[2] + 2 * Above[3] + Above[4] + 2) >> 2;
+
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+
+                dst[c] = ap[c];
+            }
+
+            dst += dst_stride;
+        }
+
+    }
+    break;
+
+
+    case B_HE_PRED:
+    {
+
+        unsigned int lp[4];
+        lp[0] = (top_left + 2 * Left[0] + Left[1] + 2) >> 2;
+        lp[1] = (Left[0] + 2 * Left[1] + Left[2] + 2) >> 2;
+        lp[2] = (Left[1] + 2 * Left[2] + Left[3] + 2) >> 2;
+        lp[3] = (Left[2] + 2 * Left[3] + Left[3] + 2) >> 2;
+
+        for (r = 0; r < 4; r++)
+        {
+            for (c = 0; c < 4; c++)
+            {
+                dst[c] = lp[r];
+            }
+
+            dst += dst_stride;
+        }
+    }
+    break;
+    case B_LD_PRED:
+    {
+        unsigned char *ptr = Above;
+        dst[0 * dst_stride + 0] = (ptr[0] + ptr[1] * 2 + ptr[2] + 2) >> 2;
+        dst[0 * dst_stride + 1] =
+            dst[1 * dst_stride + 0] = (ptr[1] + ptr[2] * 2 + ptr[3] + 2) >> 2;
+        dst[0 * dst_stride + 2] =
+            dst[1 * dst_stride + 1] =
+                dst[2 * dst_stride + 0] = (ptr[2] + ptr[3] * 2 + ptr[4] + 2) >> 2;
+        dst[0 * dst_stride + 3] =
+            dst[1 * dst_stride + 2] =
+                dst[2 * dst_stride + 1] =
+                    dst[3 * dst_stride + 0] = (ptr[3] + ptr[4] * 2 + ptr[5] + 2) >> 2;
+        dst[1 * dst_stride + 3] =
+            dst[2 * dst_stride + 2] =
+                dst[3 * dst_stride + 1] = (ptr[4] + ptr[5] * 2 + ptr[6] + 2) >> 2;
+        dst[2 * dst_stride + 3] =
+            dst[3 * dst_stride + 2] = (ptr[5] + ptr[6] * 2 + ptr[7] + 2) >> 2;
+        dst[3 * dst_stride + 3] = (ptr[6] + ptr[7] * 2 + ptr[7] + 2) >> 2;
+
+    }
+    break;
+    case B_RD_PRED:
+    {
+
+        unsigned char pp[9];
+
+        pp[0] = Left[3];
+        pp[1] = Left[2];
+        pp[2] = Left[1];
+        pp[3] = Left[0];
+        pp[4] = top_left;
+        pp[5] = Above[0];
+        pp[6] = Above[1];
+        pp[7] = Above[2];
+        pp[8] = Above[3];
+
+        dst[3 * dst_stride + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        dst[3 * dst_stride + 1] =
+            dst[2 * dst_stride + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        dst[3 * dst_stride + 2] =
+            dst[2 * dst_stride + 1] =
+                dst[1 * dst_stride + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        dst[3 * dst_stride + 3] =
+            dst[2 * dst_stride + 2] =
+                dst[1 * dst_stride + 1] =
+                    dst[0 * dst_stride + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        dst[2 * dst_stride + 3] =
+            dst[1 * dst_stride + 2] =
+                dst[0 * dst_stride + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        dst[1 * dst_stride + 3] =
+            dst[0 * dst_stride + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+        dst[0 * dst_stride + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2;
+
+    }
+    break;
+    case B_VR_PRED:
+    {
+
+        unsigned char pp[9];
+
+        pp[0] = Left[3];
+        pp[1] = Left[2];
+        pp[2] = Left[1];
+        pp[3] = Left[0];
+        pp[4] = top_left;
+        pp[5] = Above[0];
+        pp[6] = Above[1];
+        pp[7] = Above[2];
+        pp[8] = Above[3];
+
+
+        dst[3 * dst_stride + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        dst[2 * dst_stride + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        dst[3 * dst_stride + 1] =
+            dst[1 * dst_stride + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        dst[2 * dst_stride + 1] =
+            dst[0 * dst_stride + 0] = (pp[4] + pp[5] + 1) >> 1;
+        dst[3 * dst_stride + 2] =
+            dst[1 * dst_stride + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        dst[2 * dst_stride + 2] =
+            dst[0 * dst_stride + 1] = (pp[5] + pp[6] + 1) >> 1;
+        dst[3 * dst_stride + 3] =
+            dst[1 * dst_stride + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+        dst[2 * dst_stride + 3] =
+            dst[0 * dst_stride + 2] = (pp[6] + pp[7] + 1) >> 1;
+        dst[1 * dst_stride + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2;
+        dst[0 * dst_stride + 3] = (pp[7] + pp[8] + 1) >> 1;
+
+    }
+    break;
+    case B_VL_PRED:
+    {
+
+        unsigned char *pp = Above;
+
+        dst[0 * dst_stride + 0] = (pp[0] + pp[1] + 1) >> 1;
+        dst[1 * dst_stride + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        dst[2 * dst_stride + 0] =
+            dst[0 * dst_stride + 1] = (pp[1] + pp[2] + 1) >> 1;
+        dst[1 * dst_stride + 1] =
+            dst[3 * dst_stride + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        dst[2 * dst_stride + 1] =
+            dst[0 * dst_stride + 2] = (pp[2] + pp[3] + 1) >> 1;
+        dst[3 * dst_stride + 1] =
+            dst[1 * dst_stride + 2] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        dst[0 * dst_stride + 3] =
+            dst[2 * dst_stride + 2] = (pp[3] + pp[4] + 1) >> 1;
+        dst[1 * dst_stride + 3] =
+            dst[3 * dst_stride + 2] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        dst[2 * dst_stride + 3] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        dst[3 * dst_stride + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+    }
+    break;
+
+    case B_HD_PRED:
+    {
+        unsigned char pp[9];
+        pp[0] = Left[3];
+        pp[1] = Left[2];
+        pp[2] = Left[1];
+        pp[3] = Left[0];
+        pp[4] = top_left;
+        pp[5] = Above[0];
+        pp[6] = Above[1];
+        pp[7] = Above[2];
+        pp[8] = Above[3];
+
+
+        dst[3 * dst_stride + 0] = (pp[0] + pp[1] + 1) >> 1;
+        dst[3 * dst_stride + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        dst[2 * dst_stride + 0] =
+            dst[3 * dst_stride + 2] = (pp[1] + pp[2] + 1) >> 1;
+        dst[2 * dst_stride + 1] =
+            dst[3 * dst_stride + 3] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        dst[2 * dst_stride + 2] =
+            dst[1 * dst_stride + 0] = (pp[2] + pp[3] + 1) >> 1;
+        dst[2 * dst_stride + 3] =
+            dst[1 * dst_stride + 1] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2;
+        dst[1 * dst_stride + 2] =
+            dst[0 * dst_stride + 0] = (pp[3] + pp[4] + 1) >> 1;
+        dst[1 * dst_stride + 3] =
+            dst[0 * dst_stride + 1] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2;
+        dst[0 * dst_stride + 2] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2;
+        dst[0 * dst_stride + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2;
+    }
+    break;
+
+
+    case B_HU_PRED:
+    {
+        unsigned char *pp = Left;
+        dst[0 * dst_stride + 0] = (pp[0] + pp[1] + 1) >> 1;
+        dst[0 * dst_stride + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2;
+        dst[0 * dst_stride + 2] =
+            dst[1 * dst_stride + 0] = (pp[1] + pp[2] + 1) >> 1;
+        dst[0 * dst_stride + 3] =
+            dst[1 * dst_stride + 1] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2;
+        dst[1 * dst_stride + 2] =
+            dst[2 * dst_stride + 0] = (pp[2] + pp[3] + 1) >> 1;
+        dst[1 * dst_stride + 3] =
+            dst[2 * dst_stride + 1] = (pp[2] + pp[3] * 2 + pp[3] + 2) >> 2;
+        dst[2 * dst_stride + 2] =
+            dst[2 * dst_stride + 3] =
+                dst[3 * dst_stride + 0] =
+                    dst[3 * dst_stride + 1] =
+                        dst[3 * dst_stride + 2] =
+                            dst[3 * dst_stride + 3] = pp[3];
+    }
+    break;
+
+    default:
+    break;
+
+    }
+}