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