CameraParamUtil.java
4.94 KB
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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
package com.cjt2325.cameralibrary.util;
import android.content.Context;
import android.hardware.Camera;
import android.util.Log;
import android.view.Surface;
import android.view.WindowManager;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
/**
* =====================================
* 作 者: 陈嘉桐
* 版 本：1.1.4
* 创建日期：2017/4/25
* 描 述：
* =====================================
*/
public class CameraParamUtil {
private static final String TAG = "JCameraView";
private CameraSizeComparator sizeComparator = new CameraSizeComparator();
private static CameraParamUtil cameraParamUtil = null;
private CameraParamUtil() {
}
public static CameraParamUtil getInstance() {
if (cameraParamUtil == null) {
cameraParamUtil = new CameraParamUtil();
return cameraParamUtil;
} else {
return cameraParamUtil;
}
}
public Camera.Size getPreviewSize(List<Camera.Size> list, int th, float rate) {
Collections.sort(list, sizeComparator);
int i = 0;
for (Camera.Size s : list) {
if ((s.width > th) && equalRate(s, rate)) {
Log.i(TAG, "MakeSure Preview :w = " + s.width + " h = " + s.height);
break;
}
i++;
}
if (i == list.size()) {
return getBestSize(list, rate);
} else {
return list.get(i);
}
}
public Camera.Size getPictureSize(List<Camera.Size> list, int th, float rate) {
Collections.sort(list, sizeComparator);
int i = 0;
for (Camera.Size s : list) {
if ((s.width > th) && equalRate(s, rate)) {
Log.i(TAG, "MakeSure Picture :w = " + s.width + " h = " + s.height);
break;
}
i++;
}
if (i == list.size()) {
return getBestSize(list, rate);
} else {
return list.get(i);
}
}
private Camera.Size getBestSize(List<Camera.Size> list, float rate) {
float previewDisparity = 100;
int index = 0;
for (int i = 0; i < list.size(); i++) {
Camera.Size cur = list.get(i);
float prop = (float) cur.width / (float) cur.height;
if (Math.abs(rate - prop) < previewDisparity) {
previewDisparity = Math.abs(rate - prop);
index = i;
}
}
return list.get(index);
}
private boolean equalRate(Camera.Size s, float rate) {
float r = (float) (s.width) / (float) (s.height);
return Math.abs(r - rate) <= 0.2;
}
public boolean isSupportedFocusMode(List<String> focusList, String focusMode) {
for (int i = 0; i < focusList.size(); i++) {
if (focusMode.equals(focusList.get(i))) {
Log.i(TAG, "FocusMode supported " + focusMode);
return true;
}
}
Log.i(TAG, "FocusMode not supported " + focusMode);
return false;
}
public boolean isSupportedPictureFormats(List<Integer> supportedPictureFormats, int jpeg) {
for (int i = 0; i < supportedPictureFormats.size(); i++) {
if (jpeg == supportedPictureFormats.get(i)) {
Log.i(TAG, "Formats supported " + jpeg);
return true;
}
}
Log.i(TAG, "Formats not supported " + jpeg);
return false;
}
private class CameraSizeComparator implements Comparator<Camera.Size> {
public int compare(Camera.Size lhs, Camera.Size rhs) {
if (lhs.width == rhs.width) {
return 0;
} else if (lhs.width > rhs.width) {
return 1;
} else {
return -1;
}
}
}
public int getCameraDisplayOrientation(Context context, int cameraId) {
android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
android.hardware.Camera.getCameraInfo(cameraId, info);
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
int rotation = wm.getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
int result;
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
result = (info.orientation + degrees) % 360;
result = (360 - result) % 360; // compensate the mirror
} else {
// back-facing
result = (info.orientation - degrees + 360) % 360;
}
return result;
}
}