android_view_SurfaceSession.cpp revision a3850d8f8fc096a7195d34f05f45a4e29926e36c
1/*
2 * Copyright (C) 2012 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#define LOG_TAG "SurfaceSession"
18
19#include "JNIHelp.h"
20
21#include <android_runtime/AndroidRuntime.h>
22#include <android_runtime/android_view_SurfaceSession.h>
23#include <utils/Log.h>
24#include <utils/RefBase.h>
25
26#include <gui/SurfaceComposerClient.h>
27
28namespace android {
29
30static struct {
31    jfieldID mNativeClient;
32} gSurfaceSessionClassInfo;
33
34
35sp<SurfaceComposerClient> android_view_SurfaceSession_getClient(
36        JNIEnv* env, jobject surfaceSessionObj) {
37    return reinterpret_cast<SurfaceComposerClient*>(
38            env->GetLongField(surfaceSessionObj, gSurfaceSessionClassInfo.mNativeClient));
39}
40
41
42static jlong nativeCreate(JNIEnv* env, jclass clazz) {
43    SurfaceComposerClient* client = new SurfaceComposerClient();
44    client->incStrong((void*)nativeCreate);
45    return reinterpret_cast<jlong>(client);
46}
47
48static void nativeDestroy(JNIEnv* env, jclass clazz, jlong ptr) {
49    SurfaceComposerClient* client = reinterpret_cast<SurfaceComposerClient*>(ptr);
50    client->decStrong((void*)nativeCreate);
51}
52
53static void nativeKill(JNIEnv* env, jclass clazz, jlong ptr) {
54    SurfaceComposerClient* client = reinterpret_cast<SurfaceComposerClient*>(ptr);
55    client->dispose();
56}
57
58
59static JNINativeMethod gMethods[] = {
60    /* name, signature, funcPtr */
61    { "nativeCreate", "()J",
62            (void*)nativeCreate },
63    { "nativeDestroy", "(J)V",
64            (void*)nativeDestroy },
65    { "nativeKill", "(J)V",
66            (void*)nativeKill }
67};
68
69int register_android_view_SurfaceSession(JNIEnv* env) {
70    int res = jniRegisterNativeMethods(env, "android/view/SurfaceSession",
71            gMethods, NELEM(gMethods));
72    LOG_ALWAYS_FATAL_IF(res < 0, "Unable to register native methods.");
73
74    jclass clazz = env->FindClass("android/view/SurfaceSession");
75    gSurfaceSessionClassInfo.mNativeClient = env->GetFieldID(clazz, "mNativeClient", "J");
76    return 0;
77}
78
79} // namespace android
80