ref: ed8e473581015e14d106b59c5e01210b7a7a43cf
dir: /vp8/common/invtrans.h/
/* * 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 VPX_VP8_COMMON_INVTRANS_H_ #define VPX_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 INLINE 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 // VPX_VP8_COMMON_INVTRANS_H_