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
38 namespace android {
39
40 enum {
41 CREATE_SURFACE = IBinder::FIRST_CALL_TRANSACTION,
42 DESTROY_SURFACE,
43 CLEAR_LAYER_FRAME_STATS,
44 GET_LAYER_FRAME_STATS,
45 GET_TRANSFORM_TO_DISPLAY_INVERSE
46 };
47
48 class BpSurfaceComposerClient : public BpInterface<ISurfaceComposerClient>
49 {
50 public:
BpSurfaceComposerClient(const sp<IBinder> & impl)51 BpSurfaceComposerClient(const sp<IBinder>& impl)
52 : BpInterface<ISurfaceComposerClient>(impl) {
53 }
54
55 virtual ~BpSurfaceComposerClient();
56
createSurface(const String8 & name,uint32_t width,uint32_t height,PixelFormat format,uint32_t flags,sp<IBinder> * handle,sp<IGraphicBufferProducer> * gbp)57 virtual status_t createSurface(const String8& name, uint32_t width,
58 uint32_t height, PixelFormat format, uint32_t flags,
59 sp<IBinder>* handle,
60 sp<IGraphicBufferProducer>* gbp) {
61 Parcel data, reply;
62 data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
63 data.writeString8(name);
64 data.writeUint32(width);
65 data.writeUint32(height);
66 data.writeInt32(static_cast<int32_t>(format));
67 data.writeUint32(flags);
68 remote()->transact(CREATE_SURFACE, data, &reply);
69 *handle = reply.readStrongBinder();
70 *gbp = interface_cast<IGraphicBufferProducer>(reply.readStrongBinder());
71 return reply.readInt32();
72 }
73
destroySurface(const sp<IBinder> & handle)74 virtual status_t destroySurface(const sp<IBinder>& handle) {
75 Parcel data, reply;
76 data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
77 data.writeStrongBinder(handle);
78 remote()->transact(DESTROY_SURFACE, data, &reply);
79 return reply.readInt32();
80 }
81
clearLayerFrameStats(const sp<IBinder> & handle) const82 virtual status_t clearLayerFrameStats(const sp<IBinder>& handle) const {
83 Parcel data, reply;
84 data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
85 data.writeStrongBinder(handle);
86 remote()->transact(CLEAR_LAYER_FRAME_STATS, data, &reply);
87 return reply.readInt32();
88 }
89
getLayerFrameStats(const sp<IBinder> & handle,FrameStats * outStats) const90 virtual status_t getLayerFrameStats(const sp<IBinder>& handle, FrameStats* outStats) const {
91 Parcel data, reply;
92 data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
93 data.writeStrongBinder(handle);
94 remote()->transact(GET_LAYER_FRAME_STATS, data, &reply);
95 reply.read(*outStats);
96 return reply.readInt32();
97 }
98
getTransformToDisplayInverse(const sp<IBinder> & handle,bool * outTransformToDisplayInverse) const99 virtual status_t getTransformToDisplayInverse(const sp<IBinder>& handle,
100 bool* outTransformToDisplayInverse) const {
101 Parcel data, reply;
102 status_t result =
103 data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
104 if (result != NO_ERROR) {
105 return result;
106 }
107 result = data.writeStrongBinder(handle);
108 if (result != NO_ERROR) {
109 return result;
110 }
111 result = remote()->transact(GET_TRANSFORM_TO_DISPLAY_INVERSE, data, &reply);
112 if (result != NO_ERROR) {
113 return result;
114 }
115 int transformInverse;
116 result = reply.readInt32(&transformInverse);
117 if (result != NO_ERROR) {
118 return result;
119 }
120 *outTransformToDisplayInverse = transformInverse != 0 ? true : false;
121 status_t result2 = reply.readInt32(&result);
122 if (result2 != NO_ERROR) {
123 return result2;
124 }
125 return result;
126 }
127 };
128
129 // Out-of-line virtual method definition to trigger vtable emission in this
130 // translation unit (see clang warning -Wweak-vtables)
~BpSurfaceComposerClient()131 BpSurfaceComposerClient::~BpSurfaceComposerClient() {}
132
133 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
134
135 // ----------------------------------------------------------------------
136
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)137 status_t BnSurfaceComposerClient::onTransact(
138 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
139 {
140 switch(code) {
141 case CREATE_SURFACE: {
142 CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
143 String8 name = data.readString8();
144 uint32_t width = data.readUint32();
145 uint32_t height = data.readUint32();
146 PixelFormat format = static_cast<PixelFormat>(data.readInt32());
147 uint32_t createFlags = data.readUint32();
148 sp<IBinder> handle;
149 sp<IGraphicBufferProducer> gbp;
150 status_t result = createSurface(name, width, height, format,
151 createFlags, &handle, &gbp);
152 reply->writeStrongBinder(handle);
153 reply->writeStrongBinder(IInterface::asBinder(gbp));
154 reply->writeInt32(result);
155 return NO_ERROR;
156 }
157 case DESTROY_SURFACE: {
158 CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
159 reply->writeInt32(destroySurface( data.readStrongBinder() ) );
160 return NO_ERROR;
161 }
162 case CLEAR_LAYER_FRAME_STATS: {
163 CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
164 sp<IBinder> handle = data.readStrongBinder();
165 status_t result = clearLayerFrameStats(handle);
166 reply->writeInt32(result);
167 return NO_ERROR;
168 }
169 case GET_LAYER_FRAME_STATS: {
170 CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
171 sp<IBinder> handle = data.readStrongBinder();
172 FrameStats stats;
173 status_t result = getLayerFrameStats(handle, &stats);
174 reply->write(stats);
175 reply->writeInt32(result);
176 return NO_ERROR;
177 }
178 case GET_TRANSFORM_TO_DISPLAY_INVERSE: {
179 CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
180 sp<IBinder> handle;
181 status_t result = data.readStrongBinder(&handle);
182 if (result != NO_ERROR) {
183 return result;
184 }
185 bool transformInverse = false;
186 result = getTransformToDisplayInverse(handle, &transformInverse);
187 if (result != NO_ERROR) {
188 return result;
189 }
190 result = reply->writeInt32(transformInverse ? 1 : 0);
191 if (result != NO_ERROR) {
192 return result;
193 }
194 result = reply->writeInt32(NO_ERROR);
195 return result;
196 }
197 default:
198 return BBinder::onTransact(code, data, reply, flags);
199 }
200 }
201
202 }; // namespace android
203