1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
* Copyright (C) 2013-2014 Paul Kocialkowski <contact@paulk.fr>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#define LOG_TAG "smdk4210_camera"
#include <utils/Log.h>
#include "smdk4210_camera.h"
int smdk4210_camera_buffer_length(int width, int height, int format)
{
float bpp;
int buffer_length;
switch (format) {
case V4L2_PIX_FMT_RGB32:
bpp = 4.0f;
buffer_length = (int) ((float) width * (float) height * bpp);
break;
case V4L2_PIX_FMT_RGB565:
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_VYUY:
case V4L2_PIX_FMT_YVYU:
case V4L2_PIX_FMT_YUV422P:
case V4L2_PIX_FMT_NV16:
case V4L2_PIX_FMT_NV61:
bpp = 2.0f;
buffer_length = (int) ((float) width * (float) height * bpp);
break;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV12T:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420:
bpp = 1.5f;
buffer_length = SMDK4210_CAMERA_ALIGN(width * height);
buffer_length += SMDK4210_CAMERA_ALIGN(width * height / 2);
break;
case V4L2_PIX_FMT_NV21:
bpp = 1.5f;
buffer_length = (int) ((float) width * (float) height * bpp);
break;
case V4L2_PIX_FMT_JPEG:
case V4L2_PIX_FMT_INTERLEAVED:
default:
buffer_length = -1;
bpp = 0;
break;
}
return buffer_length;
}
int smdk4210_gralloc_format(int format)
{
switch (format) {
case V4L2_PIX_FMT_NV21:
return HAL_PIXEL_FORMAT_YCrCb_420_SP;
case V4L2_PIX_FMT_YUV420:
return HAL_PIXEL_FORMAT_YV12;
case V4L2_PIX_FMT_RGB565:
return HAL_PIXEL_FORMAT_RGB_565;
case V4L2_PIX_FMT_RGB32:
return HAL_PIXEL_FORMAT_RGBX_8888;
default:
return HAL_PIXEL_FORMAT_YCrCb_420_SP;
}
}
int smdk4210_scale_yuv422(void *src, int src_width, int src_height, void *dst,
int dst_width, int dst_height)
{
unsigned char *src_p, *dst_p;
int stride_x, stride_y;
int step_x, step_y;
int start_y;
int x, y;
step_x = src_width / dst_width;
step_y = src_height / dst_height;
stride_x = step_x * 2;
stride_y = src_width * 2;
dst_p = (unsigned char *) dst;
for (y = 0; y < dst_height; y++) {
start_y = stride_y * step_y * y;
for (x = 0; x < dst_width; x += 2) {
src_p = (unsigned char *) src + start_y + stride_x * x;
*dst_p++ = *src_p++;
*dst_p++ = *src_p++;
*dst_p++ = *src_p++;
*dst_p++ = *src_p++;
}
}
return 0;
}
|
