ref: 10fb9b94f4ca5df111b6a861141a18d436eff197
dir: /vp8/common/idct_blk.c/
/* * 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. */ #include "vpx_config.h" #include "vp8_rtcd.h" #include "vpx_mem/vpx_mem.h" void vp8_dequant_idct_add_c(short *input, short *dq, unsigned char *dest, int stride); void vp8_dc_only_idct_add_c(short input_dc, unsigned char *pred, int pred_stride, unsigned char *dst_ptr, int dst_stride); void vp8_dequant_idct_add_y_block_c(short *q, short *dq, unsigned char *dst, int stride, char *eobs) { int i, j; for (i = 0; i < 4; ++i) { for (j = 0; j < 4; ++j) { if (*eobs++ > 1) { vp8_dequant_idct_add_c(q, dq, dst, stride); } else { vp8_dc_only_idct_add_c(q[0] * dq[0], dst, stride, dst, stride); memset(q, 0, 2 * sizeof(q[0])); } q += 16; dst += 4; } dst += 4 * stride - 16; } } void vp8_dequant_idct_add_uv_block_c(short *q, short *dq, unsigned char *dstu, unsigned char *dstv, int stride, char *eobs) { int i, j; for (i = 0; i < 2; ++i) { for (j = 0; j < 2; ++j) { if (*eobs++ > 1) { vp8_dequant_idct_add_c(q, dq, dstu, stride); } else { vp8_dc_only_idct_add_c(q[0] * dq[0], dstu, stride, dstu, stride); memset(q, 0, 2 * sizeof(q[0])); } q += 16; dstu += 4; } dstu += 4 * stride - 8; } for (i = 0; i < 2; ++i) { for (j = 0; j < 2; ++j) { if (*eobs++ > 1) { vp8_dequant_idct_add_c(q, dq, dstv, stride); } else { vp8_dc_only_idct_add_c(q[0] * dq[0], dstv, stride, dstv, stride); memset(q, 0, 2 * sizeof(q[0])); } q += 16; dstv += 4; } dstv += 4 * stride - 8; } }