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 #ifndef VPX_VP8_COMMON_INVTRANS_H_ 12 #define VPX_VP8_COMMON_INVTRANS_H_ 13 14 #include "./vpx_config.h" 15 #include "vp8_rtcd.h" 16 #include "blockd.h" 17 #include "onyxc_int.h" 18 19 #if CONFIG_MULTITHREAD 20 #include "vpx_mem/vpx_mem.h" 21 #endif 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 eob_adjust(char * eobs,short * diff)27static void eob_adjust(char *eobs, short *diff) { 28 /* eob adjust.... the idct can only skip if both the dc and eob are zero */ 29 int js; 30 for (js = 0; js < 16; ++js) { 31 if ((eobs[js] == 0) && (diff[0] != 0)) eobs[js]++; 32 diff += 16; 33 } 34 } 35 vp8_inverse_transform_mby(MACROBLOCKD * xd)36static INLINE void vp8_inverse_transform_mby(MACROBLOCKD *xd) { 37 short *DQC = xd->dequant_y1; 38 39 if (xd->mode_info_context->mbmi.mode != SPLITMV) { 40 /* do 2nd order transform on the dc block */ 41 if (xd->eobs[24] > 1) { 42 vp8_short_inv_walsh4x4(&xd->block[24].dqcoeff[0], xd->qcoeff); 43 } else { 44 vp8_short_inv_walsh4x4_1(&xd->block[24].dqcoeff[0], xd->qcoeff); 45 } 46 eob_adjust(xd->eobs, xd->qcoeff); 47 48 DQC = xd->dequant_y1_dc; 49 } 50 vp8_dequant_idct_add_y_block(xd->qcoeff, DQC, xd->dst.y_buffer, 51 xd->dst.y_stride, xd->eobs); 52 } 53 #ifdef __cplusplus 54 } // extern "C" 55 #endif 56 57 #endif // VPX_VP8_COMMON_INVTRANS_H_ 58