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
|
/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <android/bitmap.h>
#include <GraphicsJNI.h>
int AndroidBitmap_getInfo(JNIEnv* env, jobject jbitmap,
AndroidBitmapInfo* info) {
if (NULL == env || NULL == jbitmap) {
return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
}
SkBitmap* bm = GraphicsJNI::getNativeBitmap(env, jbitmap);
if (NULL == bm) {
return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
}
if (info) {
info->width = bm->width();
info->height = bm->height();
info->stride = bm->rowBytes();
info->flags = 0;
switch (bm->config()) {
case SkBitmap::kARGB_8888_Config:
info->format = ANDROID_BITMAP_FORMAT_RGBA_8888;
break;
case SkBitmap::kRGB_565_Config:
info->format = ANDROID_BITMAP_FORMAT_RGB_565;
break;
case SkBitmap::kARGB_4444_Config:
info->format = ANDROID_BITMAP_FORMAT_RGBA_4444;
break;
case SkBitmap::kA8_Config:
info->format = ANDROID_BITMAP_FORMAT_A_8;
break;
default:
info->format = ANDROID_BITMAP_FORMAT_NONE;
break;
}
}
return ANDROID_BITMAP_RESULT_SUCCESS;
}
int AndroidBitmap_lockPixels(JNIEnv* env, jobject jbitmap, void** addrPtr) {
if (NULL == env || NULL == jbitmap) {
return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
}
SkBitmap* bm = GraphicsJNI::getNativeBitmap(env, jbitmap);
if (NULL == bm) {
return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
}
bm->lockPixels();
void* addr = bm->getPixels();
if (NULL == addr) {
bm->unlockPixels();
return ANDROID_BITMAP_RESULT_ALLOCATION_FAILED;
}
if (addrPtr) {
*addrPtr = addr;
}
return ANDROID_BITMAP_RESULT_SUCCESS;
}
int AndroidBitmap_unlockPixels(JNIEnv* env, jobject jbitmap) {
if (NULL == env || NULL == jbitmap) {
return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
}
SkBitmap* bm = GraphicsJNI::getNativeBitmap(env, jbitmap);
if (NULL == bm) {
return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
}
// notifyPixelsChanged() needs be called to apply writes to GL-backed
// bitmaps. Note that this will slow down read-only accesses to the
// bitmaps, but the NDK methods are primarily intended to be used for
// writes.
bm->notifyPixelsChanged();
bm->unlockPixels();
return ANDROID_BITMAP_RESULT_SUCCESS;
}
|
