71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP8_COMMON_INVTRANS_H_
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#define VP8_COMMON_INVTRANS_H_
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#include "vpx_config.h"
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#include "vp8_rtcd.h"
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#include "blockd.h"
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#include "onyxc_int.h"
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#if CONFIG_MULTITHREAD
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#include "vpx_mem/vpx_mem.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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static void eob_adjust(char *eobs, short *diff)
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{
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/* eob adjust.... the idct can only skip if both the dc and eob are zero */
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int js;
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for(js = 0; js < 16; js++)
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{
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if((eobs[js] == 0) && (diff[0] != 0))
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eobs[js]++;
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diff+=16;
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}
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}
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static void vp8_inverse_transform_mby(MACROBLOCKD *xd)
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{
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short *DQC = xd->dequant_y1;
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if (xd->mode_info_context->mbmi.mode != SPLITMV)
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{
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/* do 2nd order transform on the dc block */
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if (xd->eobs[24] > 1)
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{
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vp8_short_inv_walsh4x4
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(&xd->block[24].dqcoeff[0], xd->qcoeff);
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}
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else
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{
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vp8_short_inv_walsh4x4_1
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(&xd->block[24].dqcoeff[0], xd->qcoeff);
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}
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eob_adjust(xd->eobs, xd->qcoeff);
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DQC = xd->dequant_y1_dc;
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}
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vp8_dequant_idct_add_y_block
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(xd->qcoeff, DQC,
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xd->dst.y_buffer,
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xd->dst.y_stride, xd->eobs);
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP8_COMMON_INVTRANS_H_
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