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 <stdint.h>
21 #include <sys/types.h>
22
23 #include <binder/Parcel.h>
24 #include <binder/IMemory.h>
25 #include <binder/IPCThreadState.h>
26 #include <binder/IServiceManager.h>
27
28 #include <gui/BitTube.h>
29 #include <gui/IDisplayEventConnection.h>
30 #include <gui/ISurfaceComposer.h>
31 #include <gui/ISurfaceTexture.h>
32
33 #include <private/gui/LayerState.h>
34
35 #include <ui/DisplayInfo.h>
36
37 #include <utils/Log.h>
38
39 // ---------------------------------------------------------------------------
40
41 namespace android {
42
43 class IDisplayEventConnection;
44
45 class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
46 {
47 public:
BpSurfaceComposer(const sp<IBinder> & impl)48 BpSurfaceComposer(const sp<IBinder>& impl)
49 : BpInterface<ISurfaceComposer>(impl)
50 {
51 }
52
createConnection()53 virtual sp<ISurfaceComposerClient> createConnection()
54 {
55 uint32_t n;
56 Parcel data, reply;
57 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
58 remote()->transact(BnSurfaceComposer::CREATE_CONNECTION, data, &reply);
59 return interface_cast<ISurfaceComposerClient>(reply.readStrongBinder());
60 }
61
createGraphicBufferAlloc()62 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc()
63 {
64 uint32_t n;
65 Parcel data, reply;
66 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
67 remote()->transact(BnSurfaceComposer::CREATE_GRAPHIC_BUFFER_ALLOC, data, &reply);
68 return interface_cast<IGraphicBufferAlloc>(reply.readStrongBinder());
69 }
70
getCblk() const71 virtual sp<IMemoryHeap> getCblk() const
72 {
73 Parcel data, reply;
74 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
75 remote()->transact(BnSurfaceComposer::GET_CBLK, data, &reply);
76 return interface_cast<IMemoryHeap>(reply.readStrongBinder());
77 }
78
setTransactionState(const Vector<ComposerState> & state,int orientation,uint32_t flags)79 virtual void setTransactionState(const Vector<ComposerState>& state,
80 int orientation, uint32_t flags)
81 {
82 Parcel data, reply;
83 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
84 Vector<ComposerState>::const_iterator b(state.begin());
85 Vector<ComposerState>::const_iterator e(state.end());
86 data.writeInt32(state.size());
87 for ( ; b != e ; ++b ) {
88 b->write(data);
89 }
90 data.writeInt32(orientation);
91 data.writeInt32(flags);
92 remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply);
93 }
94
bootFinished()95 virtual void bootFinished()
96 {
97 Parcel data, reply;
98 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
99 remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
100 }
101
captureScreen(DisplayID dpy,sp<IMemoryHeap> * heap,uint32_t * width,uint32_t * height,PixelFormat * format,uint32_t reqWidth,uint32_t reqHeight,uint32_t minLayerZ,uint32_t maxLayerZ)102 virtual status_t captureScreen(DisplayID dpy,
103 sp<IMemoryHeap>* heap,
104 uint32_t* width, uint32_t* height, PixelFormat* format,
105 uint32_t reqWidth, uint32_t reqHeight,
106 uint32_t minLayerZ, uint32_t maxLayerZ)
107 {
108 Parcel data, reply;
109 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
110 data.writeInt32(dpy);
111 data.writeInt32(reqWidth);
112 data.writeInt32(reqHeight);
113 data.writeInt32(minLayerZ);
114 data.writeInt32(maxLayerZ);
115 remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
116 *heap = interface_cast<IMemoryHeap>(reply.readStrongBinder());
117 *width = reply.readInt32();
118 *height = reply.readInt32();
119 *format = reply.readInt32();
120 return reply.readInt32();
121 }
122
turnElectronBeamOff(int32_t mode)123 virtual status_t turnElectronBeamOff(int32_t mode)
124 {
125 Parcel data, reply;
126 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
127 data.writeInt32(mode);
128 remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_OFF, data, &reply);
129 return reply.readInt32();
130 }
131
turnElectronBeamOn(int32_t mode)132 virtual status_t turnElectronBeamOn(int32_t mode)
133 {
134 Parcel data, reply;
135 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
136 data.writeInt32(mode);
137 remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_ON, data, &reply);
138 return reply.readInt32();
139 }
140
authenticateSurfaceTexture(const sp<ISurfaceTexture> & surfaceTexture) const141 virtual bool authenticateSurfaceTexture(
142 const sp<ISurfaceTexture>& surfaceTexture) const
143 {
144 Parcel data, reply;
145 int err = NO_ERROR;
146 err = data.writeInterfaceToken(
147 ISurfaceComposer::getInterfaceDescriptor());
148 if (err != NO_ERROR) {
149 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
150 "interface descriptor: %s (%d)", strerror(-err), -err);
151 return false;
152 }
153 err = data.writeStrongBinder(surfaceTexture->asBinder());
154 if (err != NO_ERROR) {
155 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
156 "strong binder to parcel: %s (%d)", strerror(-err), -err);
157 return false;
158 }
159 err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data,
160 &reply);
161 if (err != NO_ERROR) {
162 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
163 "performing transaction: %s (%d)", strerror(-err), -err);
164 return false;
165 }
166 int32_t result = 0;
167 err = reply.readInt32(&result);
168 if (err != NO_ERROR) {
169 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
170 "retrieving result: %s (%d)", strerror(-err), -err);
171 return false;
172 }
173 return result != 0;
174 }
175
createDisplayEventConnection()176 virtual sp<IDisplayEventConnection> createDisplayEventConnection()
177 {
178 Parcel data, reply;
179 sp<IDisplayEventConnection> result;
180 int err = data.writeInterfaceToken(
181 ISurfaceComposer::getInterfaceDescriptor());
182 if (err != NO_ERROR) {
183 return result;
184 }
185 err = remote()->transact(
186 BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
187 data, &reply);
188 if (err != NO_ERROR) {
189 ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing "
190 "transaction: %s (%d)", strerror(-err), -err);
191 return result;
192 }
193 result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
194 return result;
195 }
196 };
197
198 IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
199
200 // ----------------------------------------------------------------------
201
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)202 status_t BnSurfaceComposer::onTransact(
203 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
204 {
205 switch(code) {
206 case CREATE_CONNECTION: {
207 CHECK_INTERFACE(ISurfaceComposer, data, reply);
208 sp<IBinder> b = createConnection()->asBinder();
209 reply->writeStrongBinder(b);
210 } break;
211 case CREATE_GRAPHIC_BUFFER_ALLOC: {
212 CHECK_INTERFACE(ISurfaceComposer, data, reply);
213 sp<IBinder> b = createGraphicBufferAlloc()->asBinder();
214 reply->writeStrongBinder(b);
215 } break;
216 case SET_TRANSACTION_STATE: {
217 CHECK_INTERFACE(ISurfaceComposer, data, reply);
218 size_t count = data.readInt32();
219 ComposerState s;
220 Vector<ComposerState> state;
221 state.setCapacity(count);
222 for (size_t i=0 ; i<count ; i++) {
223 s.read(data);
224 state.add(s);
225 }
226 int orientation = data.readInt32();
227 uint32_t flags = data.readInt32();
228 setTransactionState(state, orientation, flags);
229 } break;
230 case BOOT_FINISHED: {
231 CHECK_INTERFACE(ISurfaceComposer, data, reply);
232 bootFinished();
233 } break;
234 case GET_CBLK: {
235 CHECK_INTERFACE(ISurfaceComposer, data, reply);
236 sp<IBinder> b = getCblk()->asBinder();
237 reply->writeStrongBinder(b);
238 } break;
239 case CAPTURE_SCREEN: {
240 CHECK_INTERFACE(ISurfaceComposer, data, reply);
241 DisplayID dpy = data.readInt32();
242 uint32_t reqWidth = data.readInt32();
243 uint32_t reqHeight = data.readInt32();
244 uint32_t minLayerZ = data.readInt32();
245 uint32_t maxLayerZ = data.readInt32();
246 sp<IMemoryHeap> heap;
247 uint32_t w, h;
248 PixelFormat f;
249 status_t res = captureScreen(dpy, &heap, &w, &h, &f,
250 reqWidth, reqHeight, minLayerZ, maxLayerZ);
251 reply->writeStrongBinder(heap->asBinder());
252 reply->writeInt32(w);
253 reply->writeInt32(h);
254 reply->writeInt32(f);
255 reply->writeInt32(res);
256 } break;
257 case TURN_ELECTRON_BEAM_OFF: {
258 CHECK_INTERFACE(ISurfaceComposer, data, reply);
259 int32_t mode = data.readInt32();
260 status_t res = turnElectronBeamOff(mode);
261 reply->writeInt32(res);
262 } break;
263 case TURN_ELECTRON_BEAM_ON: {
264 CHECK_INTERFACE(ISurfaceComposer, data, reply);
265 int32_t mode = data.readInt32();
266 status_t res = turnElectronBeamOn(mode);
267 reply->writeInt32(res);
268 } break;
269 case AUTHENTICATE_SURFACE: {
270 CHECK_INTERFACE(ISurfaceComposer, data, reply);
271 sp<ISurfaceTexture> surfaceTexture =
272 interface_cast<ISurfaceTexture>(data.readStrongBinder());
273 int32_t result = authenticateSurfaceTexture(surfaceTexture) ? 1 : 0;
274 reply->writeInt32(result);
275 } break;
276 case CREATE_DISPLAY_EVENT_CONNECTION: {
277 CHECK_INTERFACE(ISurfaceComposer, data, reply);
278 sp<IDisplayEventConnection> connection(createDisplayEventConnection());
279 reply->writeStrongBinder(connection->asBinder());
280 return NO_ERROR;
281 } break;
282 default:
283 return BBinder::onTransact(code, data, reply, flags);
284 }
285 return NO_ERROR;
286 }
287
288 // ----------------------------------------------------------------------------
289
290 };
291