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_ports/config.h"
#include "vp8/common/idct.h"
#include "quantize.h"
#include "vp8/common/reconintra.h"
#include "vp8/common/reconintra4x4.h"
#include "encodemb.h"
#include "vp8/common/invtrans.h"
#include "vp8/common/recon.h"
#include "dct.h"
#include "vp8/common/g_common.h"
#include "encodeintra.h"


#if CONFIG_RUNTIME_CPU_DETECT
#define IF_RTCD(x) (x)
#else
#define IF_RTCD(x) NULL
#endif

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(IF_RTCD(&cpi->rtcd), x);
    }
    else
    {
        for (i = 0; i < 16; i++)
        {
            x->e_mbd.block[i].bmi.as_mode = B_DC_PRED;
            vp8_encode_intra4x4block(IF_RTCD(&cpi->rtcd), x, i);
        }
    }

    intra_pred_var = VARIANCE_INVOKE(&cpi->rtcd.variance, getmbss)(x->src_diff);

    return intra_pred_var;
}

void vp8_encode_intra4x4block(const VP8_ENCODER_RTCD *rtcd,
                              MACROBLOCK *x, int ib)
{
    BLOCKD *b = &x->e_mbd.block[ib];
    BLOCK *be = &x->block[ib];

    RECON_INVOKE(&rtcd->common->recon, intra4x4_predict)
                (b, b->bmi.as_mode, b->predictor);

    ENCODEMB_INVOKE(&rtcd->encodemb, subb)(be, b, 16);

    x->vp8_short_fdct4x4(be->src_diff, be->coeff, 32);

    x->quantize_b(be, b);

    vp8_inverse_transform_b(IF_RTCD(&rtcd->common->idct), b, 32);

    RECON_INVOKE(&rtcd->common->recon, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride);
}

void vp8_encode_intra4x4mby(const VP8_ENCODER_RTCD *rtcd, MACROBLOCK *mb)
{
    int i;

    MACROBLOCKD *x = &mb->e_mbd;
    vp8_intra_prediction_down_copy(x);

    for (i = 0; i < 16; i++)
        vp8_encode_intra4x4block(rtcd, mb, i);
    return;
}

void vp8_encode_intra16x16mby(const VP8_ENCODER_RTCD *rtcd, MACROBLOCK *x)
{
    int b;

    RECON_INVOKE(&rtcd->common->recon, build_intra_predictors_mby)(&x->e_mbd);

    ENCODEMB_INVOKE(&rtcd->encodemb, submby)(x->src_diff, x->src.y_buffer, x->e_mbd.predictor, x->src.y_stride);

    vp8_transform_intra_mby(x);

    vp8_quantize_mby(x);

    if (x->optimize)
        vp8_optimize_mby(x, rtcd);

    vp8_inverse_transform_mby(IF_RTCD(&rtcd->common->idct), &x->e_mbd);

    RECON_INVOKE(&rtcd->common->recon, recon_mby)
        (IF_RTCD(&rtcd->common->recon), &x->e_mbd);

    // make sure block modes are set the way we want them for context updates
    for (b = 0; b < 16; b++)
    {
        BLOCKD *d = &x->e_mbd.block[b];

        switch (x->e_mbd.mode_info_context->mbmi.mode)
        {
        case DC_PRED:
            d->bmi.as_mode = B_DC_PRED;
            break;
        case V_PRED:
            d->bmi.as_mode = B_VE_PRED;
            break;
        case H_PRED:
            d->bmi.as_mode = B_HE_PRED;
            break;
        case TM_PRED:
            d->bmi.as_mode = B_TM_PRED;
            break;
        default:
            d->bmi.as_mode = B_DC_PRED;
            break;
        }
    }
}

void vp8_encode_intra16x16mbuv(const VP8_ENCODER_RTCD *rtcd, MACROBLOCK *x)
{
    RECON_INVOKE(&rtcd->common->recon, build_intra_predictors_mbuv)(&x->e_mbd);

    ENCODEMB_INVOKE(&rtcd->encodemb, submbuv)(x->src_diff, x->src.u_buffer, x->src.v_buffer, x->e_mbd.predictor, x->src.uv_stride);

    vp8_transform_mbuv(x);

    vp8_quantize_mbuv(x);

    if (x->optimize)
        vp8_optimize_mbuv(x, rtcd);

    vp8_inverse_transform_mbuv(IF_RTCD(&rtcd->common->idct), &x->e_mbd);

    vp8_recon_intra_mbuv(IF_RTCD(&rtcd->common->recon), &x->e_mbd);
}