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