139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vpx_config.h"
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#include "vp8_rtcd.h"
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#include "quantize.h"
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#include "vp8/common/reconintra4x4.h"
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#include "encodemb.h"
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#include "vp8/common/invtrans.h"
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#include "encodeintra.h"
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int vp8_encode_intra(VP8_COMP *cpi, MACROBLOCK *x, int use_dc_pred)
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{
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int i;
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int intra_pred_var = 0;
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(void) cpi;
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if (use_dc_pred)
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{
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x->e_mbd.mode_info_context->mbmi.mode = DC_PRED;
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x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED;
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x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME;
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vp8_encode_intra16x16mby(x);
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vp8_inverse_transform_mby(&x->e_mbd);
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}
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else
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{
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for (i = 0; i < 16; i++)
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{
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x->e_mbd.block[i].bmi.as_mode = B_DC_PRED;
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vp8_encode_intra4x4block(x, i);
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}
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}
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intra_pred_var = vp8_get_mb_ss(x->src_diff);
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return intra_pred_var;
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}
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void vp8_encode_intra4x4block(MACROBLOCK *x, int ib)
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{
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BLOCKD *b = &x->e_mbd.block[ib];
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BLOCK *be = &x->block[ib];
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int dst_stride = x->e_mbd.dst.y_stride;
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unsigned char *dst = x->e_mbd.dst.y_buffer + b->offset;
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unsigned char *Above = dst - dst_stride;
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unsigned char *yleft = dst - 1;
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unsigned char top_left = Above[-1];
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vp8_intra4x4_predict(Above, yleft, dst_stride, b->bmi.as_mode,
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b->predictor, 16, top_left);
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vp8_subtract_b(be, b, 16);
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x->short_fdct4x4(be->src_diff, be->coeff, 32);
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x->quantize_b(be, b);
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if (*b->eob > 1)
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{
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vp8_short_idct4x4llm(b->dqcoeff, b->predictor, 16, dst, dst_stride);
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}
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else
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{
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vp8_dc_only_idct_add(b->dqcoeff[0], b->predictor, 16, dst, dst_stride);
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}
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}
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void vp8_encode_intra4x4mby(MACROBLOCK *mb)
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{
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int i;
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MACROBLOCKD *xd = &mb->e_mbd;
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intra_prediction_down_copy(xd, xd->dst.y_buffer - xd->dst.y_stride + 16);
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for (i = 0; i < 16; i++)
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vp8_encode_intra4x4block(mb, i);
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return;
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}
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void vp8_encode_intra16x16mby(MACROBLOCK *x)
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{
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BLOCK *b = &x->block[0];
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MACROBLOCKD *xd = &x->e_mbd;
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vp8_build_intra_predictors_mby_s(xd,
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xd->dst.y_buffer - xd->dst.y_stride,
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xd->dst.y_buffer - 1,
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xd->dst.y_stride,
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xd->dst.y_buffer,
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xd->dst.y_stride);
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vp8_subtract_mby(x->src_diff, *(b->base_src),
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b->src_stride, xd->dst.y_buffer, xd->dst.y_stride);
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vp8_transform_intra_mby(x);
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vp8_quantize_mby(x);
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if (x->optimize)
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vp8_optimize_mby(x);
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}
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void vp8_encode_intra16x16mbuv(MACROBLOCK *x)
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{
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MACROBLOCKD *xd = &x->e_mbd;
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vp8_build_intra_predictors_mbuv_s(xd, xd->dst.u_buffer - xd->dst.uv_stride,
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xd->dst.v_buffer - xd->dst.uv_stride,
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xd->dst.u_buffer - 1,
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xd->dst.v_buffer - 1,
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xd->dst.uv_stride,
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xd->dst.u_buffer, xd->dst.v_buffer,
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xd->dst.uv_stride);
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vp8_subtract_mbuv(x->src_diff, x->src.u_buffer,
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x->src.v_buffer, x->src.uv_stride, xd->dst.u_buffer,
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xd->dst.v_buffer, xd->dst.uv_stride);
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vp8_transform_mbuv(x);
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vp8_quantize_mbuv(x);
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if (x->optimize)
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vp8_optimize_mbuv(x);
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}
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