本文是采用zmyde2010的方法,在sunsumg i9100上啟動截屏服務,在此記錄操作過程。
zmyde2010文章的鏈接:http://blog.csdn.net/zmyde2010/article/details/6925498
此截屏方法是參照Android源碼
frameworks\base\services\surfaceflinger\tests\screencap\screencap.cpp
1
/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <utils/Log.h>
18
19 #include <binder/IPCThreadState.h>
20 #include <binder/ProcessState.h>
21 #include <binder/IServiceManager.h>
22
23 #include <binder/IMemory.h>
24 #include <surfaceflinger/ISurfaceComposer.h>
25
26 #include <SkImageEncoder.h>
27 #include <SkBitmap.h>
28
29 using namespace android;
30
31 int main( int argc, char** argv)
32 {
33 if (argc != 2) {
34 printf( " usage: %s path\n ", argv[ 0]);
35 exit( 0);
36 }
37
38 const String16 name( " SurfaceFlinger ");
39 sp<ISurfaceComposer> composer;
40 getService(name, &composer);
41
42 sp<IMemoryHeap> heap;
43 uint32_t w, h;
44 PixelFormat f;
45 status_t err = composer->captureScreen( 0, &heap, &w, &h, &f, 0, 0);
46 if (err != NO_ERROR) {
47 fprintf(stderr, " screen capture failed: %s\n ", strerror(-err));
48 exit( 0);
49 }
50
51 printf( " screen capture success: w=%u, h=%u, pixels=%p\n ",
52 w, h, heap->getBase());
53
54 printf( " saving file as PNG in %s ...\n ", argv[ 1]);
55
56 SkBitmap b;
57 b.setConfig(SkBitmap::kARGB_8888_Config, w, h);
58 b.setPixels(heap->getBase());
59 SkImageEncoder::EncodeFile(argv[ 1], b,
60 SkImageEncoder::kPNG_Type, SkImageEncoder::kDefaultQuality);
61
62 return 0;
63 }
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <utils/Log.h>
18
19 #include <binder/IPCThreadState.h>
20 #include <binder/ProcessState.h>
21 #include <binder/IServiceManager.h>
22
23 #include <binder/IMemory.h>
24 #include <surfaceflinger/ISurfaceComposer.h>
25
26 #include <SkImageEncoder.h>
27 #include <SkBitmap.h>
28
29 using namespace android;
30
31 int main( int argc, char** argv)
32 {
33 if (argc != 2) {
34 printf( " usage: %s path\n ", argv[ 0]);
35 exit( 0);
36 }
37
38 const String16 name( " SurfaceFlinger ");
39 sp<ISurfaceComposer> composer;
40 getService(name, &composer);
41
42 sp<IMemoryHeap> heap;
43 uint32_t w, h;
44 PixelFormat f;
45 status_t err = composer->captureScreen( 0, &heap, &w, &h, &f, 0, 0);
46 if (err != NO_ERROR) {
47 fprintf(stderr, " screen capture failed: %s\n ", strerror(-err));
48 exit( 0);
49 }
50
51 printf( " screen capture success: w=%u, h=%u, pixels=%p\n ",
52 w, h, heap->getBase());
53
54 printf( " saving file as PNG in %s ...\n ", argv[ 1]);
55
56 SkBitmap b;
57 b.setConfig(SkBitmap::kARGB_8888_Config, w, h);
58 b.setPixels(heap->getBase());
59 SkImageEncoder::EncodeFile(argv[ 1], b,
60 SkImageEncoder::kPNG_Type, SkImageEncoder::kDefaultQuality);
61
62 return 0;
63 }
下載該文中的提供的代碼,我所采用的方法是將代碼加入到了CM的源碼中。
編譯
為保持源碼的一致性,將screencap代碼放在packages/apps目錄下。
接下來就是編譯系統,使新生成的系統包內含screencap程序。
要使目標源碼編譯時包含我們添加進去的程序,需要在bulid/target/product/generic.mk文件中將package name添加進去:
PRODUCT_PACKAGES := /
AccountAndSyncSettings /
CarHome /
DeskClock /
……
SyncProvider /
Screencap
AccountAndSyncSettings /
CarHome /
DeskClock /
……
SyncProvider /
Screencap
然后在Android.mk中注意包含LOCAL_MODULE_TAGS := optional 語句。
完成這些步驟之后,就可以開始編譯源碼燒寫系統了。
燒好系統后, 在系統中,截屏程序默認屬性為開機自啟動,作為系統服務等待調用。
在自己的應用程序中,使用如下語句啟用服務
sendBroadcast(
new Intent("com.android.CAPTURE_SCREEN"));
在sd卡目錄下生成圖片。
這樣,我將截屏程序在i9100手機中就運行成功了,還是一樣,歡迎指正!