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