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 "./vpx_config.h" 12 #include "./vpx_dsp_rtcd.h" 13 #include "./vp8_rtcd.h" 14 #include "vpx_mem/vpx_mem.h" 15 #include "vpx_ports/vpx_once.h" 16 #include "blockd.h" 17 #include "vp8/common/reconintra.h" 18 #include "vp8/common/reconintra4x4.h" 19 20 enum { 21 SIZE_16, 22 SIZE_8, 23 NUM_SIZES, 24 }; 25 26 typedef void (*intra_pred_fn)(uint8_t *dst, ptrdiff_t stride, 27 const uint8_t *above, const uint8_t *left); 28 29 static intra_pred_fn pred[4][NUM_SIZES]; 30 static intra_pred_fn dc_pred[2][2][NUM_SIZES]; 31 32 static void vp8_init_intra_predictors_internal(void) { 33 #define INIT_SIZE(sz) \ 34 pred[V_PRED][SIZE_##sz] = vpx_v_predictor_##sz##x##sz; \ 35 pred[H_PRED][SIZE_##sz] = vpx_h_predictor_##sz##x##sz; \ 36 pred[TM_PRED][SIZE_##sz] = vpx_tm_predictor_##sz##x##sz; \ 37 \ 38 dc_pred[0][0][SIZE_##sz] = vpx_dc_128_predictor_##sz##x##sz; \ 39 dc_pred[0][1][SIZE_##sz] = vpx_dc_top_predictor_##sz##x##sz; \ 40 dc_pred[1][0][SIZE_##sz] = vpx_dc_left_predictor_##sz##x##sz; \ 41 dc_pred[1][1][SIZE_##sz] = vpx_dc_predictor_##sz##x##sz 42 43 INIT_SIZE(16); 44 INIT_SIZE(8); 45 vp8_init_intra4x4_predictors_internal(); 46 } 47 48 void vp8_build_intra_predictors_mby_s(MACROBLOCKD *x, unsigned char *yabove_row, 49 unsigned char *yleft, int left_stride, 50 unsigned char *ypred_ptr, int y_stride) { 51 MB_PREDICTION_MODE mode = x->mode_info_context->mbmi.mode; 52 DECLARE_ALIGNED(16, uint8_t, yleft_col[16]); 53 int i; 54 intra_pred_fn fn; 55 56 for (i = 0; i < 16; ++i) { 57 yleft_col[i] = yleft[i * left_stride]; 58 } 59 60 if (mode == DC_PRED) { 61 fn = dc_pred[x->left_available][x->up_available][SIZE_16]; 62 } else { 63 fn = pred[mode][SIZE_16]; 64 } 65 66 fn(ypred_ptr, y_stride, yabove_row, yleft_col); 67 } 68 69 void vp8_build_intra_predictors_mbuv_s( 70 MACROBLOCKD *x, unsigned char *uabove_row, unsigned char *vabove_row, 71 unsigned char *uleft, unsigned char *vleft, int left_stride, 72 unsigned char *upred_ptr, unsigned char *vpred_ptr, int pred_stride) { 73 MB_PREDICTION_MODE uvmode = x->mode_info_context->mbmi.uv_mode; 74 #if HAVE_VSX 75 /* Power PC implementation uses "vec_vsx_ld" to read 16 bytes from 76 uleft_col and vleft_col. Play it safe by reserving enough stack 77 space here. */ 78 unsigned char uleft_col[16]; 79 unsigned char vleft_col[16]; 80 #else 81 unsigned char uleft_col[8]; 82 unsigned char vleft_col[8]; 83 #endif 84 int i; 85 intra_pred_fn fn; 86 87 for (i = 0; i < 8; ++i) { 88 uleft_col[i] = uleft[i * left_stride]; 89 vleft_col[i] = vleft[i * left_stride]; 90 } 91 92 if (uvmode == DC_PRED) { 93 fn = dc_pred[x->left_available][x->up_available][SIZE_8]; 94 } else { 95 fn = pred[uvmode][SIZE_8]; 96 } 97 98 fn(upred_ptr, pred_stride, uabove_row, uleft_col); 99 fn(vpred_ptr, pred_stride, vabove_row, vleft_col); 100 } 101 102 void vp8_init_intra_predictors(void) { 103 once(vp8_init_intra_predictors_internal); 104 } 105
