ref: 1490342be5437038a9420c7f7df2ae3a6ba6df0c
dir: /vp8/encoder/encodeintra.c/
/* * 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 "vpx_config.h" #include "vp8_rtcd.h" #include "./vpx_dsp_rtcd.h" #include "vp8/encoder/quantize.h" #include "vp8/common/reconintra.h" #include "vp8/common/reconintra4x4.h" #include "encodemb.h" #include "vp8/common/invtrans.h" #include "encodeintra.h" int vp8_encode_intra(VP8_COMP *cpi, MACROBLOCK *x, int use_dc_pred) { int i; int intra_pred_var = 0; (void) cpi; if (use_dc_pred) { x->e_mbd.mode_info_context->mbmi.mode = DC_PRED; x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED; x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME; vp8_encode_intra16x16mby(x); vp8_inverse_transform_mby(&x->e_mbd); } else { for (i = 0; i < 16; i++) { x->e_mbd.block[i].bmi.as_mode = B_DC_PRED; vp8_encode_intra4x4block(x, i); } } intra_pred_var = vpx_get_mb_ss(x->src_diff); return intra_pred_var; } void vp8_encode_intra4x4block(MACROBLOCK *x, int ib) { BLOCKD *b = &x->e_mbd.block[ib]; BLOCK *be = &x->block[ib]; int dst_stride = x->e_mbd.dst.y_stride; unsigned char *dst = x->e_mbd.dst.y_buffer + b->offset; unsigned char *Above = dst - dst_stride; unsigned char *yleft = dst - 1; unsigned char top_left = Above[-1]; vp8_intra4x4_predict(Above, yleft, dst_stride, b->bmi.as_mode, b->predictor, 16, top_left); vp8_subtract_b(be, b, 16); x->short_fdct4x4(be->src_diff, be->coeff, 32); x->quantize_b(be, b); if (*b->eob > 1) { vp8_short_idct4x4llm(b->dqcoeff, b->predictor, 16, dst, dst_stride); } else { vp8_dc_only_idct_add(b->dqcoeff[0], b->predictor, 16, dst, dst_stride); } } void vp8_encode_intra4x4mby(MACROBLOCK *mb) { int i; MACROBLOCKD *xd = &mb->e_mbd; intra_prediction_down_copy(xd, xd->dst.y_buffer - xd->dst.y_stride + 16); for (i = 0; i < 16; i++) vp8_encode_intra4x4block(mb, i); return; } void vp8_encode_intra16x16mby(MACROBLOCK *x) { BLOCK *b = &x->block[0]; MACROBLOCKD *xd = &x->e_mbd; vp8_build_intra_predictors_mby_s(xd, xd->dst.y_buffer - xd->dst.y_stride, xd->dst.y_buffer - 1, xd->dst.y_stride, xd->dst.y_buffer, xd->dst.y_stride); vp8_subtract_mby(x->src_diff, *(b->base_src), b->src_stride, xd->dst.y_buffer, xd->dst.y_stride); vp8_transform_intra_mby(x); vp8_quantize_mby(x); if (x->optimize) vp8_optimize_mby(x); } void vp8_encode_intra16x16mbuv(MACROBLOCK *x) { MACROBLOCKD *xd = &x->e_mbd; vp8_build_intra_predictors_mbuv_s(xd, xd->dst.u_buffer - xd->dst.uv_stride, xd->dst.v_buffer - xd->dst.uv_stride, xd->dst.u_buffer - 1, xd->dst.v_buffer - 1, xd->dst.uv_stride, xd->dst.u_buffer, xd->dst.v_buffer, xd->dst.uv_stride); vp8_subtract_mbuv(x->src_diff, x->src.u_buffer, x->src.v_buffer, x->src.uv_stride, xd->dst.u_buffer, xd->dst.v_buffer, xd->dst.uv_stride); vp8_transform_mbuv(x); vp8_quantize_mbuv(x); if (x->optimize) vp8_optimize_mbuv(x); }