ISurfaceComposerClient.cpp revision ac9fa427d4a86745e60a5f7fd8e3ea340c4db907 
1/*
2 * Copyright (C) 2007 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// tag as surfaceflinger
18#define LOG_TAG "SurfaceFlinger"
19
20#include <stdio.h>
21#include <stdint.h>
22#include <sys/types.h>
23
24#include <binder/Parcel.h>
25#include <binder/IMemory.h>
26#include <binder/IPCThreadState.h>
27#include <binder/IServiceManager.h>
28
29#include <ui/Point.h>
30#include <ui/Rect.h>
31
32#include <gui/ISurface.h>
33#include <gui/ISurfaceComposerClient.h>
34#include <private/gui/LayerState.h>
35
36// ---------------------------------------------------------------------------
37
38namespace android {
39
40enum {
41    CREATE_SURFACE = IBinder::FIRST_CALL_TRANSACTION,
42    DESTROY_SURFACE
43};
44
45class BpSurfaceComposerClient : public BpInterface<ISurfaceComposerClient>
46{
47public:
48    BpSurfaceComposerClient(const sp<IBinder>& impl)
49        : BpInterface<ISurfaceComposerClient>(impl)
50    {
51    }
52
53    virtual sp<ISurface> createSurface( const String8& name,
54                                        uint32_t w,
55                                        uint32_t h,
56                                        PixelFormat format,
57                                        uint32_t flags)
58    {
59        Parcel data, reply;
60        data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
61        data.writeString8(name);
62        data.writeInt32(w);
63        data.writeInt32(h);
64        data.writeInt32(format);
65        data.writeInt32(flags);
66        remote()->transact(CREATE_SURFACE, data, &reply);
67        return interface_cast<ISurface>(reply.readStrongBinder());
68    }
69
70    virtual status_t destroySurface(const sp<IBinder>& handle)
71    {
72        Parcel data, reply;
73        data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
74        data.writeStrongBinder(handle);
75        remote()->transact(DESTROY_SURFACE, data, &reply);
76        return reply.readInt32();
77    }
78};
79
80IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
81
82// ----------------------------------------------------------------------
83
84status_t BnSurfaceComposerClient::onTransact(
85    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
86{
87     switch(code) {
88        case CREATE_SURFACE: {
89            CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
90            String8 name = data.readString8();
91            uint32_t w = data.readInt32();
92            uint32_t h = data.readInt32();
93            PixelFormat format = data.readInt32();
94            uint32_t flags = data.readInt32();
95            sp<ISurface> s = createSurface(name, w, h, format, flags);
96            reply->writeStrongBinder(s->asBinder());
97            return NO_ERROR;
98        } break;
99        case DESTROY_SURFACE: {
100            CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
101            reply->writeInt32( destroySurface( data.readStrongBinder() ) );
102            return NO_ERROR;
103        } break;
104        default:
105            return BBinder::onTransact(code, data, reply, flags);
106    }
107}
108
109}; // namespace android
110