91 lines
2.3 KiB
C
91 lines
2.3 KiB
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;
|
|
}
|
|
}
|