text: /*
   *  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 <string.h>
  
  #include "vpx_config.h"
  #include "./vpx_dsp_rtcd.h"
  #include "vp8_rtcd.h"
  #include "blockd.h"
  
  typedef void (*intra_pred_fn)(uint8_t *dst, ptrdiff_t stride,
                                const uint8_t *above, const uint8_t *left);
  
  static intra_pred_fn pred[10];
  
  void vp8_init_intra4x4_predictors_internal(void)
  {
      pred[B_DC_PRED] = vpx_dc_predictor_4x4;
      pred[B_TM_PRED] = vpx_tm_predictor_4x4;
      pred[B_VE_PRED] = vpx_ve_predictor_4x4;
      pred[B_HE_PRED] = vpx_he_predictor_4x4;
      pred[B_LD_PRED] = vpx_d45e_predictor_4x4;
      pred[B_RD_PRED] = vpx_d135_predictor_4x4;
      pred[B_VR_PRED] = vpx_d117_predictor_4x4;
      pred[B_VL_PRED] = vpx_d63f_predictor_4x4;
      pred[B_HD_PRED] = vpx_d153_predictor_4x4;
      pred[B_HU_PRED] = vpx_d207_predictor_4x4;
  }
  
  void vp8_intra4x4_predict(unsigned char *above,
                            unsigned char *yleft, int left_stride,
                            B_PREDICTION_MODE b_mode,
                            unsigned char *dst, int dst_stride,
                            unsigned char top_left)
  {
      unsigned char Left[4];
      unsigned char Aboveb[12], *Above = Aboveb + 4;
  
      Left[0] = yleft[0];
      Left[1] = yleft[left_stride];
      Left[2] = yleft[2 * left_stride];
      Left[3] = yleft[3 * left_stride];
      memcpy(Above, above, 8);
      Above[-1] = top_left;
  
      pred[b_mode](dst, dst_stride, Above, Left);
  }
  