ISurfaceComposerClient.cpp revision 1db13d79518f600d65a4fc006fe42900b890966e 
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 <surfaceflinger/ISurface.h>
33#include <surfaceflinger/ISurfaceComposerClient.h>
34#include <private/surfaceflinger/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( surface_data_t* params,
54                                        const String8& name,
55                                        DisplayID display,
56                                        uint32_t w,
57                                        uint32_t h,
58                                        PixelFormat format,
59                                        uint32_t flags)
60    {
61        Parcel data, reply;
62        data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
63        data.writeString8(name);
64        data.writeInt32(display);
65        data.writeInt32(w);
66        data.writeInt32(h);
67        data.writeInt32(format);
68        data.writeInt32(flags);
69        remote()->transact(CREATE_SURFACE, data, &reply);
70        params->readFromParcel(reply);
71        return interface_cast<ISurface>(reply.readStrongBinder());
72    }
73
74    virtual status_t destroySurface(SurfaceID sid)
75    {
76        Parcel data, reply;
77        data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
78        data.writeInt32(sid);
79        remote()->transact(DESTROY_SURFACE, data, &reply);
80        return reply.readInt32();
81    }
82};
83
84IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
85
86// ----------------------------------------------------------------------
87
88status_t BnSurfaceComposerClient::onTransact(
89    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
90{
91     switch(code) {
92        case CREATE_SURFACE: {
93            CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
94            surface_data_t params;
95            String8 name = data.readString8();
96            DisplayID display = data.readInt32();
97            uint32_t w = data.readInt32();
98            uint32_t h = data.readInt32();
99            PixelFormat format = data.readInt32();
100            uint32_t flags = data.readInt32();
101            sp<ISurface> s = createSurface(&params, name, display, w, h,
102                    format, flags);
103            params.writeToParcel(reply);
104            reply->writeStrongBinder(s->asBinder());
105            return NO_ERROR;
106        } break;
107        case DESTROY_SURFACE: {
108            CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
109            reply->writeInt32( destroySurface( data.readInt32() ) );
110            return NO_ERROR;
111        } break;
112        default:
113            return BBinder::onTransact(code, data, reply, flags);
114    }
115}
116
117// ----------------------------------------------------------------------
118
119status_t ISurfaceComposerClient::surface_data_t::readFromParcel(const Parcel& parcel)
120{
121    token    = parcel.readInt32();
122    identity = parcel.readInt32();
123    return NO_ERROR;
124}
125
126status_t ISurfaceComposerClient::surface_data_t::writeToParcel(Parcel* parcel) const
127{
128    parcel->writeInt32(token);
129    parcel->writeInt32(identity);
130    return NO_ERROR;
131}
132
133}; // namespace android
134