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#include "vpx_config.h"
12#include "vp8_rtcd.h"
13#include "vpx_mem/vpx_mem.h"
14
15void vp8_dequant_idct_add_c(short *input, short *dq,
16                            unsigned char *dest, int stride);
17void vp8_dc_only_idct_add_c(short input_dc, unsigned char * pred,
18                            int pred_stride, unsigned char *dst_ptr,
19                            int dst_stride);
20
21void vp8_dequant_idct_add_y_block_c
22            (short *q, short *dq,
23             unsigned char *dst, int stride, char *eobs)
24{
25    int i, j;
26
27    for (i = 0; i < 4; i++)
28    {
29        for (j = 0; j < 4; j++)
30        {
31            if (*eobs++ > 1)
32                vp8_dequant_idct_add_c (q, dq, dst, stride);
33            else
34            {
35                vp8_dc_only_idct_add_c (q[0]*dq[0], dst, stride, dst, stride);
36                vpx_memset(q, 0, 2 * sizeof(q[0]));
37            }
38
39            q   += 16;
40            dst += 4;
41        }
42
43        dst += 4*stride - 16;
44    }
45}
46
47void vp8_dequant_idct_add_uv_block_c
48            (short *q, short *dq,
49             unsigned char *dstu, unsigned char *dstv, int stride, char *eobs)
50{
51    int i, j;
52
53    for (i = 0; i < 2; i++)
54    {
55        for (j = 0; j < 2; j++)
56        {
57            if (*eobs++ > 1)
58                vp8_dequant_idct_add_c (q, dq, dstu, stride);
59            else
60            {
61                vp8_dc_only_idct_add_c (q[0]*dq[0], dstu, stride, dstu, stride);
62                vpx_memset(q, 0, 2 * sizeof(q[0]));
63            }
64
65            q    += 16;
66            dstu += 4;
67        }
68
69        dstu += 4*stride - 8;
70    }
71
72    for (i = 0; i < 2; i++)
73    {
74        for (j = 0; j < 2; j++)
75        {
76            if (*eobs++ > 1)
77                vp8_dequant_idct_add_c (q, dq, dstv, stride);
78            else
79            {
80                vp8_dc_only_idct_add_c (q[0]*dq[0], dstv, stride, dstv, stride);
81                vpx_memset(q, 0, 2 * sizeof(q[0]));
82            }
83
84            q    += 16;
85            dstv += 4;
86        }
87
88        dstv += 4*stride - 8;
89    }
90}
91