90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vpx_config.h"
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#include "vp8_rtcd.h"
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#include "vpx_mem/vpx_mem.h"
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void vp8_dequant_idct_add_c(short *input, short *dq,
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unsigned char *dest, int stride);
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void vp8_dc_only_idct_add_c(short input_dc, unsigned char * pred,
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int pred_stride, unsigned char *dst_ptr,
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int dst_stride);
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void vp8_dequant_idct_add_y_block_c
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(short *q, short *dq,
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unsigned char *dst, int stride, char *eobs)
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{
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int i, j;
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for (i = 0; i < 4; i++)
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{
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for (j = 0; j < 4; j++)
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{
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if (*eobs++ > 1)
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vp8_dequant_idct_add_c (q, dq, dst, stride);
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else
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{
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vp8_dc_only_idct_add_c (q[0]*dq[0], dst, stride, dst, stride);
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memset(q, 0, 2 * sizeof(q[0]));
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}
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q += 16;
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dst += 4;
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}
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dst += 4*stride - 16;
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}
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}
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void vp8_dequant_idct_add_uv_block_c
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(short *q, short *dq,
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unsigned char *dstu, unsigned char *dstv, int stride, char *eobs)
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{
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int i, j;
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for (i = 0; i < 2; i++)
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{
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for (j = 0; j < 2; j++)
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{
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if (*eobs++ > 1)
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vp8_dequant_idct_add_c (q, dq, dstu, stride);
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else
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{
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vp8_dc_only_idct_add_c (q[0]*dq[0], dstu, stride, dstu, stride);
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memset(q, 0, 2 * sizeof(q[0]));
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}
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q += 16;
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dstu += 4;
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}
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dstu += 4*stride - 8;
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}
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for (i = 0; i < 2; i++)
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{
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for (j = 0; j < 2; j++)
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{
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if (*eobs++ > 1)
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vp8_dequant_idct_add_c (q, dq, dstv, stride);
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else
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{
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vp8_dc_only_idct_add_c (q[0]*dq[0], dstv, stride, dstv, stride);
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memset(q, 0, 2 * sizeof(q[0]));
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}
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q += 16;
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dstv += 4;
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}
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dstv += 4*stride - 8;
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}
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}
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