1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include <string.h>
12
13 #include "vpx_config.h"
14 #include "./vpx_dsp_rtcd.h"
15 #include "vp8_rtcd.h"
16 #include "blockd.h"
17
18 typedef void (*intra_pred_fn)(uint8_t *dst, ptrdiff_t stride,
19 const uint8_t *above, const uint8_t *left);
20
21 static intra_pred_fn pred[10];
22
vp8_init_intra4x4_predictors_internal(void)23 void vp8_init_intra4x4_predictors_internal(void)
24 {
25 pred[B_DC_PRED] = vpx_dc_predictor_4x4;
26 pred[B_TM_PRED] = vpx_tm_predictor_4x4;
27 pred[B_VE_PRED] = vpx_ve_predictor_4x4;
28 pred[B_HE_PRED] = vpx_he_predictor_4x4;
29 pred[B_LD_PRED] = vpx_d45e_predictor_4x4;
30 pred[B_RD_PRED] = vpx_d135_predictor_4x4;
31 pred[B_VR_PRED] = vpx_d117_predictor_4x4;
32 pred[B_VL_PRED] = vpx_d63f_predictor_4x4;
33 pred[B_HD_PRED] = vpx_d153_predictor_4x4;
34 pred[B_HU_PRED] = vpx_d207_predictor_4x4;
35 }
36
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)37 void vp8_intra4x4_predict(unsigned char *above,
38 unsigned char *yleft, int left_stride,
39 B_PREDICTION_MODE b_mode,
40 unsigned char *dst, int dst_stride,
41 unsigned char top_left)
42 {
43 unsigned char Left[4];
44 unsigned char Aboveb[12], *Above = Aboveb + 4;
45
46 Left[0] = yleft[0];
47 Left[1] = yleft[left_stride];
48 Left[2] = yleft[2 * left_stride];
49 Left[3] = yleft[3 * left_stride];
50 memcpy(Above, above, 8);
51 Above[-1] = top_left;
52
53 pred[b_mode](dst, dst_stride, Above, Left);
54 }
55