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 12 #include "vpx_config.h" 13 #include "vp8_rtcd.h" 14 #include "quantize.h" 15 #include "vp8/common/reconintra4x4.h" 16 #include "encodemb.h" 17 #include "vp8/common/invtrans.h" 18 #include "encodeintra.h" 19 20 21 int vp8_encode_intra(VP8_COMP *cpi, MACROBLOCK *x, int use_dc_pred) 22 { 23 24 int i; 25 int intra_pred_var = 0; 26 (void) cpi; 27 28 if (use_dc_pred) 29 { 30 x->e_mbd.mode_info_context->mbmi.mode = DC_PRED; 31 x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED; 32 x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME; 33 34 vp8_encode_intra16x16mby(x); 35 36 vp8_inverse_transform_mby(&x->e_mbd); 37 } 38 else 39 { 40 for (i = 0; i < 16; i++) 41 { 42 x->e_mbd.block[i].bmi.as_mode = B_DC_PRED; 43 vp8_encode_intra4x4block(x, i); 44 } 45 } 46 47 intra_pred_var = vp8_get_mb_ss(x->src_diff); 48 49 return intra_pred_var; 50 } 51 52 void vp8_encode_intra4x4block(MACROBLOCK *x, int ib) 53 { 54 BLOCKD *b = &x->e_mbd.block[ib]; 55 BLOCK *be = &x->block[ib]; 56 int dst_stride = x->e_mbd.dst.y_stride; 57 unsigned char *dst = x->e_mbd.dst.y_buffer + b->offset; 58 unsigned char *Above = dst - dst_stride; 59 unsigned char *yleft = dst - 1; 60 unsigned char top_left = Above[-1]; 61 62 vp8_intra4x4_predict(Above, yleft, dst_stride, b->bmi.as_mode, 63 b->predictor, 16, top_left); 64 65 vp8_subtract_b(be, b, 16); 66 67 x->short_fdct4x4(be->src_diff, be->coeff, 32); 68 69 x->quantize_b(be, b); 70 71 if (*b->eob > 1) 72 { 73 vp8_short_idct4x4llm(b->dqcoeff, b->predictor, 16, dst, dst_stride); 74 } 75 else 76 { 77 vp8_dc_only_idct_add(b->dqcoeff[0], b->predictor, 16, dst, dst_stride); 78 } 79 } 80 81 void vp8_encode_intra4x4mby(MACROBLOCK *mb) 82 { 83 int i; 84 85 MACROBLOCKD *xd = &mb->e_mbd; 86 intra_prediction_down_copy(xd, xd->dst.y_buffer - xd->dst.y_stride + 16); 87 88 for (i = 0; i < 16; i++) 89 vp8_encode_intra4x4block(mb, i); 90 return; 91 } 92 93 void vp8_encode_intra16x16mby(MACROBLOCK *x) 94 { 95 BLOCK *b = &x->block[0]; 96 MACROBLOCKD *xd = &x->e_mbd; 97 98 vp8_build_intra_predictors_mby_s(xd, 99 xd->dst.y_buffer - xd->dst.y_stride, 100 xd->dst.y_buffer - 1, 101 xd->dst.y_stride, 102 xd->dst.y_buffer, 103 xd->dst.y_stride); 104 105 vp8_subtract_mby(x->src_diff, *(b->base_src), 106 b->src_stride, xd->dst.y_buffer, xd->dst.y_stride); 107 108 vp8_transform_intra_mby(x); 109 110 vp8_quantize_mby(x); 111 112 if (x->optimize) 113 vp8_optimize_mby(x); 114 } 115 116 void vp8_encode_intra16x16mbuv(MACROBLOCK *x) 117 { 118 MACROBLOCKD *xd = &x->e_mbd; 119 120 vp8_build_intra_predictors_mbuv_s(xd, xd->dst.u_buffer - xd->dst.uv_stride, 121 xd->dst.v_buffer - xd->dst.uv_stride, 122 xd->dst.u_buffer - 1, 123 xd->dst.v_buffer - 1, 124 xd->dst.uv_stride, 125 xd->dst.u_buffer, xd->dst.v_buffer, 126 xd->dst.uv_stride); 127 128 vp8_subtract_mbuv(x->src_diff, x->src.u_buffer, 129 x->src.v_buffer, x->src.uv_stride, xd->dst.u_buffer, 130 xd->dst.v_buffer, xd->dst.uv_stride); 131 132 vp8_transform_mbuv(x); 133 134 vp8_quantize_mbuv(x); 135 136 if (x->optimize) 137 vp8_optimize_mbuv(x); 138 } 139
