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/*
* 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 "vpx_rtcd.h"
#include "quantize.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 = vp8_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);
}
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