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/IGraphicBufferProducer.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
setTransactionState(const Vector<ComposerState> & state,const Vector<DisplayState> & displays,uint32_t flags)71 virtual void setTransactionState(
72 const Vector<ComposerState>& state,
73 const Vector<DisplayState>& displays,
74 uint32_t flags)
75 {
76 Parcel data, reply;
77 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
78 {
79 Vector<ComposerState>::const_iterator b(state.begin());
80 Vector<ComposerState>::const_iterator e(state.end());
81 data.writeInt32(state.size());
82 for ( ; b != e ; ++b ) {
83 b->write(data);
84 }
85 }
86 {
87 Vector<DisplayState>::const_iterator b(displays.begin());
88 Vector<DisplayState>::const_iterator e(displays.end());
89 data.writeInt32(displays.size());
90 for ( ; b != e ; ++b ) {
91 b->write(data);
92 }
93 }
94 data.writeInt32(flags);
95 remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply);
96 }
97
bootFinished()98 virtual void bootFinished()
99 {
100 Parcel data, reply;
101 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
102 remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
103 }
104
captureScreen(const sp<IBinder> & display,const sp<IGraphicBufferProducer> & producer,uint32_t reqWidth,uint32_t reqHeight,uint32_t minLayerZ,uint32_t maxLayerZ,bool isCpuConsumer)105 virtual status_t captureScreen(const sp<IBinder>& display,
106 const sp<IGraphicBufferProducer>& producer,
107 uint32_t reqWidth, uint32_t reqHeight,
108 uint32_t minLayerZ, uint32_t maxLayerZ,
109 bool isCpuConsumer)
110 {
111 Parcel data, reply;
112 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
113 data.writeStrongBinder(display);
114 data.writeStrongBinder(producer->asBinder());
115 data.writeInt32(reqWidth);
116 data.writeInt32(reqHeight);
117 data.writeInt32(minLayerZ);
118 data.writeInt32(maxLayerZ);
119 data.writeInt32(isCpuConsumer);
120 remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
121 return reply.readInt32();
122 }
123
authenticateSurfaceTexture(const sp<IGraphicBufferProducer> & bufferProducer) const124 virtual bool authenticateSurfaceTexture(
125 const sp<IGraphicBufferProducer>& bufferProducer) const
126 {
127 Parcel data, reply;
128 int err = NO_ERROR;
129 err = data.writeInterfaceToken(
130 ISurfaceComposer::getInterfaceDescriptor());
131 if (err != NO_ERROR) {
132 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
133 "interface descriptor: %s (%d)", strerror(-err), -err);
134 return false;
135 }
136 err = data.writeStrongBinder(bufferProducer->asBinder());
137 if (err != NO_ERROR) {
138 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
139 "strong binder to parcel: %s (%d)", strerror(-err), -err);
140 return false;
141 }
142 err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data,
143 &reply);
144 if (err != NO_ERROR) {
145 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
146 "performing transaction: %s (%d)", strerror(-err), -err);
147 return false;
148 }
149 int32_t result = 0;
150 err = reply.readInt32(&result);
151 if (err != NO_ERROR) {
152 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
153 "retrieving result: %s (%d)", strerror(-err), -err);
154 return false;
155 }
156 return result != 0;
157 }
158
createDisplayEventConnection()159 virtual sp<IDisplayEventConnection> createDisplayEventConnection()
160 {
161 Parcel data, reply;
162 sp<IDisplayEventConnection> result;
163 int err = data.writeInterfaceToken(
164 ISurfaceComposer::getInterfaceDescriptor());
165 if (err != NO_ERROR) {
166 return result;
167 }
168 err = remote()->transact(
169 BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
170 data, &reply);
171 if (err != NO_ERROR) {
172 ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing "
173 "transaction: %s (%d)", strerror(-err), -err);
174 return result;
175 }
176 result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
177 return result;
178 }
179
createDisplay(const String8 & displayName,bool secure)180 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure)
181 {
182 Parcel data, reply;
183 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
184 data.writeString8(displayName);
185 data.writeInt32(secure ? 1 : 0);
186 remote()->transact(BnSurfaceComposer::CREATE_DISPLAY, data, &reply);
187 return reply.readStrongBinder();
188 }
189
getBuiltInDisplay(int32_t id)190 virtual sp<IBinder> getBuiltInDisplay(int32_t id)
191 {
192 Parcel data, reply;
193 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
194 data.writeInt32(id);
195 remote()->transact(BnSurfaceComposer::GET_BUILT_IN_DISPLAY, data, &reply);
196 return reply.readStrongBinder();
197 }
198
blank(const sp<IBinder> & display)199 virtual void blank(const sp<IBinder>& display)
200 {
201 Parcel data, reply;
202 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
203 data.writeStrongBinder(display);
204 remote()->transact(BnSurfaceComposer::BLANK, data, &reply);
205 }
206
unblank(const sp<IBinder> & display)207 virtual void unblank(const sp<IBinder>& display)
208 {
209 Parcel data, reply;
210 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
211 data.writeStrongBinder(display);
212 remote()->transact(BnSurfaceComposer::UNBLANK, data, &reply);
213 }
214
getDisplayInfo(const sp<IBinder> & display,DisplayInfo * info)215 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info)
216 {
217 Parcel data, reply;
218 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
219 data.writeStrongBinder(display);
220 remote()->transact(BnSurfaceComposer::GET_DISPLAY_INFO, data, &reply);
221 memcpy(info, reply.readInplace(sizeof(DisplayInfo)), sizeof(DisplayInfo));
222 return reply.readInt32();
223 }
224 };
225
226 IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
227
228 // ----------------------------------------------------------------------
229
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)230 status_t BnSurfaceComposer::onTransact(
231 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
232 {
233 switch(code) {
234 case CREATE_CONNECTION: {
235 CHECK_INTERFACE(ISurfaceComposer, data, reply);
236 sp<IBinder> b = createConnection()->asBinder();
237 reply->writeStrongBinder(b);
238 } break;
239 case CREATE_GRAPHIC_BUFFER_ALLOC: {
240 CHECK_INTERFACE(ISurfaceComposer, data, reply);
241 sp<IBinder> b = createGraphicBufferAlloc()->asBinder();
242 reply->writeStrongBinder(b);
243 } break;
244 case SET_TRANSACTION_STATE: {
245 CHECK_INTERFACE(ISurfaceComposer, data, reply);
246 size_t count = data.readInt32();
247 ComposerState s;
248 Vector<ComposerState> state;
249 state.setCapacity(count);
250 for (size_t i=0 ; i<count ; i++) {
251 s.read(data);
252 state.add(s);
253 }
254 count = data.readInt32();
255 DisplayState d;
256 Vector<DisplayState> displays;
257 displays.setCapacity(count);
258 for (size_t i=0 ; i<count ; i++) {
259 d.read(data);
260 displays.add(d);
261 }
262 uint32_t flags = data.readInt32();
263 setTransactionState(state, displays, flags);
264 } break;
265 case BOOT_FINISHED: {
266 CHECK_INTERFACE(ISurfaceComposer, data, reply);
267 bootFinished();
268 } break;
269 case CAPTURE_SCREEN: {
270 CHECK_INTERFACE(ISurfaceComposer, data, reply);
271 sp<IBinder> display = data.readStrongBinder();
272 sp<IGraphicBufferProducer> producer =
273 interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
274 uint32_t reqWidth = data.readInt32();
275 uint32_t reqHeight = data.readInt32();
276 uint32_t minLayerZ = data.readInt32();
277 uint32_t maxLayerZ = data.readInt32();
278 bool isCpuConsumer = data.readInt32();
279 status_t res = captureScreen(display, producer,
280 reqWidth, reqHeight, minLayerZ, maxLayerZ,
281 isCpuConsumer);
282 reply->writeInt32(res);
283 } break;
284 case AUTHENTICATE_SURFACE: {
285 CHECK_INTERFACE(ISurfaceComposer, data, reply);
286 sp<IGraphicBufferProducer> bufferProducer =
287 interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
288 int32_t result = authenticateSurfaceTexture(bufferProducer) ? 1 : 0;
289 reply->writeInt32(result);
290 } break;
291 case CREATE_DISPLAY_EVENT_CONNECTION: {
292 CHECK_INTERFACE(ISurfaceComposer, data, reply);
293 sp<IDisplayEventConnection> connection(createDisplayEventConnection());
294 reply->writeStrongBinder(connection->asBinder());
295 return NO_ERROR;
296 } break;
297 case CREATE_DISPLAY: {
298 CHECK_INTERFACE(ISurfaceComposer, data, reply);
299 String8 displayName = data.readString8();
300 bool secure = bool(data.readInt32());
301 sp<IBinder> display(createDisplay(displayName, secure));
302 reply->writeStrongBinder(display);
303 return NO_ERROR;
304 } break;
305 case GET_BUILT_IN_DISPLAY: {
306 CHECK_INTERFACE(ISurfaceComposer, data, reply);
307 int32_t id = data.readInt32();
308 sp<IBinder> display(getBuiltInDisplay(id));
309 reply->writeStrongBinder(display);
310 return NO_ERROR;
311 } break;
312 case BLANK: {
313 CHECK_INTERFACE(ISurfaceComposer, data, reply);
314 sp<IBinder> display = data.readStrongBinder();
315 blank(display);
316 } break;
317 case UNBLANK: {
318 CHECK_INTERFACE(ISurfaceComposer, data, reply);
319 sp<IBinder> display = data.readStrongBinder();
320 unblank(display);
321 } break;
322 case GET_DISPLAY_INFO: {
323 CHECK_INTERFACE(ISurfaceComposer, data, reply);
324 DisplayInfo info;
325 sp<IBinder> display = data.readStrongBinder();
326 status_t result = getDisplayInfo(display, &info);
327 memcpy(reply->writeInplace(sizeof(DisplayInfo)), &info, sizeof(DisplayInfo));
328 reply->writeInt32(result);
329 } break;
330 default:
331 return BBinder::onTransact(code, data, reply, flags);
332 }
333 return NO_ERROR;
334 }
335
336 // ----------------------------------------------------------------------------
337
338 };
339