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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.
*/
#ifndef VP8_COMMON_INVTRANS_H_
#define VP8_COMMON_INVTRANS_H_
#include "vpx_config.h"
#include "vp8_rtcd.h"
#include "blockd.h"
#include "onyxc_int.h"
#if CONFIG_MULTITHREAD
#include "vpx_mem/vpx_mem.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
static void eob_adjust(char *eobs, short *diff)
{
/* eob adjust.... the idct can only skip if both the dc and eob are zero */
int js;
for(js = 0; js < 16; js++)
{
if((eobs[js] == 0) && (diff[0] != 0))
eobs[js]++;
diff+=16;
}
}
static void vp8_inverse_transform_mby(MACROBLOCKD *xd)
{
short *DQC = xd->dequant_y1;
if (xd->mode_info_context->mbmi.mode != SPLITMV)
{
/* do 2nd order transform on the dc block */
if (xd->eobs[24] > 1)
{
vp8_short_inv_walsh4x4
(&xd->block[24].dqcoeff[0], xd->qcoeff);
}
else
{
vp8_short_inv_walsh4x4_1
(&xd->block[24].dqcoeff[0], xd->qcoeff);
}
eob_adjust(xd->eobs, xd->qcoeff);
DQC = xd->dequant_y1_dc;
}
vp8_dequant_idct_add_y_block
(xd->qcoeff, DQC,
xd->dst.y_buffer,
xd->dst.y_stride, xd->eobs);
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VP8_COMMON_INVTRANS_H_
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