ISurfaceComposerClient.cpp revision 4d9b822e2c18142e55fe2611aa6cd7dc7d4a62c6 
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/IGraphicBufferProducer.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    virtual status_t createSurface(const String8& name, uint32_t w,
53            uint32_t h, PixelFormat format, uint32_t flags,
54            sp<IBinder>* handle,
55            sp<IGraphicBufferProducer>* gbp) {
56        Parcel data, reply;
57        data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
58        data.writeString8(name);
59        data.writeInt32(w);
60        data.writeInt32(h);
61        data.writeInt32(format);
62        data.writeInt32(flags);
63        remote()->transact(CREATE_SURFACE, data, &reply);
64        *handle = reply.readStrongBinder();
65        *gbp = interface_cast<IGraphicBufferProducer>(reply.readStrongBinder());
66        return reply.readInt32();
67    }
68
69    virtual status_t destroySurface(const sp<IBinder>& handle) {
70        Parcel data, reply;
71        data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
72        data.writeStrongBinder(handle);
73        remote()->transact(DESTROY_SURFACE, data, &reply);
74        return reply.readInt32();
75    }
76};
77
78IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
79
80// ----------------------------------------------------------------------
81
82status_t BnSurfaceComposerClient::onTransact(
83    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
84{
85     switch(code) {
86        case CREATE_SURFACE: {
87            CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
88            String8 name = data.readString8();
89            uint32_t w = data.readInt32();
90            uint32_t h = data.readInt32();
91            PixelFormat format = data.readInt32();
92            uint32_t flags = data.readInt32();
93            sp<IBinder> handle;
94            sp<IGraphicBufferProducer> gbp;
95            status_t result = createSurface(name, w, h, format, flags,
96                    &handle, &gbp);
97            reply->writeStrongBinder(handle);
98            reply->writeStrongBinder(gbp->asBinder());
99            reply->writeInt32(result);
100            return NO_ERROR;
101        } break;
102        case DESTROY_SURFACE: {
103            CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
104            reply->writeInt32( destroySurface( data.readStrongBinder() ) );
105            return NO_ERROR;
106        } break;
107        default:
108            return BBinder::onTransact(code, data, reply, flags);
109    }
110}
111
112}; // namespace android
113