/* *  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);}