1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 12 #ifndef __INC_INVTRANS_H 13 #define __INC_INVTRANS_H 14 15 #include "vpx_config.h" 16 #include "vpx_rtcd.h" 17 #include "blockd.h" 18 #include "onyxc_int.h" 19 20 #if CONFIG_MULTITHREAD 21 #include "vpx_mem/vpx_mem.h" 22 #endif 23 24 static void eob_adjust(char *eobs, short *diff) 25 { 26 /* eob adjust.... the idct can only skip if both the dc and eob are zero */ 27 int js; 28 for(js = 0; js < 16; js++) 29 { 30 if((eobs[js] == 0) && (diff[0] != 0)) 31 eobs[js]++; 32 diff+=16; 33 } 34 } 35 36 static void vp8_inverse_transform_mby(MACROBLOCKD *xd) 37 { 38 short *DQC = xd->dequant_y1; 39 40 if (xd->mode_info_context->mbmi.mode != SPLITMV) 41 { 42 /* do 2nd order transform on the dc block */ 43 if (xd->eobs[24] > 1) 44 { 45 vp8_short_inv_walsh4x4 46 (&xd->block[24].dqcoeff[0], xd->qcoeff); 47 } 48 else 49 { 50 vp8_short_inv_walsh4x4_1 51 (&xd->block[24].dqcoeff[0], xd->qcoeff); 52 } 53 eob_adjust(xd->eobs, xd->qcoeff); 54 55 DQC = xd->dequant_y1_dc; 56 } 57 vp8_dequant_idct_add_y_block 58 (xd->qcoeff, DQC, 59 xd->dst.y_buffer, 60 xd->dst.y_stride, xd->eobs); 61 } 62 #endif 63
