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)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 {
110 Parcel data, reply;
111 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
112 data.writeStrongBinder(display);
113 data.writeStrongBinder(producer->asBinder());
114 data.writeInt32(reqWidth);
115 data.writeInt32(reqHeight);
116 data.writeInt32(minLayerZ);
117 data.writeInt32(maxLayerZ);
118 remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
119 return reply.readInt32();
120 }
121
authenticateSurfaceTexture(const sp<IGraphicBufferProducer> & bufferProducer) const122 virtual bool authenticateSurfaceTexture(
123 const sp<IGraphicBufferProducer>& bufferProducer) const
124 {
125 Parcel data, reply;
126 int err = NO_ERROR;
127 err = data.writeInterfaceToken(
128 ISurfaceComposer::getInterfaceDescriptor());
129 if (err != NO_ERROR) {
130 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
131 "interface descriptor: %s (%d)", strerror(-err), -err);
132 return false;
133 }
134 err = data.writeStrongBinder(bufferProducer->asBinder());
135 if (err != NO_ERROR) {
136 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
137 "strong binder to parcel: %s (%d)", strerror(-err), -err);
138 return false;
139 }
140 err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data,
141 &reply);
142 if (err != NO_ERROR) {
143 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
144 "performing transaction: %s (%d)", strerror(-err), -err);
145 return false;
146 }
147 int32_t result = 0;
148 err = reply.readInt32(&result);
149 if (err != NO_ERROR) {
150 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
151 "retrieving result: %s (%d)", strerror(-err), -err);
152 return false;
153 }
154 return result != 0;
155 }
156
createDisplayEventConnection()157 virtual sp<IDisplayEventConnection> createDisplayEventConnection()
158 {
159 Parcel data, reply;
160 sp<IDisplayEventConnection> result;
161 int err = data.writeInterfaceToken(
162 ISurfaceComposer::getInterfaceDescriptor());
163 if (err != NO_ERROR) {
164 return result;
165 }
166 err = remote()->transact(
167 BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
168 data, &reply);
169 if (err != NO_ERROR) {
170 ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing "
171 "transaction: %s (%d)", strerror(-err), -err);
172 return result;
173 }
174 result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
175 return result;
176 }
177
createDisplay(const String8 & displayName,bool secure)178 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure)
179 {
180 Parcel data, reply;
181 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
182 data.writeString8(displayName);
183 data.writeInt32(secure ? 1 : 0);
184 remote()->transact(BnSurfaceComposer::CREATE_DISPLAY, data, &reply);
185 return reply.readStrongBinder();
186 }
187
destroyDisplay(const sp<IBinder> & display)188 virtual void destroyDisplay(const sp<IBinder>& display)
189 {
190 Parcel data, reply;
191 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
192 data.writeStrongBinder(display);
193 remote()->transact(BnSurfaceComposer::DESTROY_DISPLAY, data, &reply);
194 }
195
getBuiltInDisplay(int32_t id)196 virtual sp<IBinder> getBuiltInDisplay(int32_t id)
197 {
198 Parcel data, reply;
199 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
200 data.writeInt32(id);
201 remote()->transact(BnSurfaceComposer::GET_BUILT_IN_DISPLAY, data, &reply);
202 return reply.readStrongBinder();
203 }
204
blank(const sp<IBinder> & display)205 virtual void blank(const sp<IBinder>& display)
206 {
207 Parcel data, reply;
208 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
209 data.writeStrongBinder(display);
210 remote()->transact(BnSurfaceComposer::BLANK, data, &reply);
211 }
212
unblank(const sp<IBinder> & display)213 virtual void unblank(const sp<IBinder>& display)
214 {
215 Parcel data, reply;
216 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
217 data.writeStrongBinder(display);
218 remote()->transact(BnSurfaceComposer::UNBLANK, data, &reply);
219 }
220
getDisplayInfo(const sp<IBinder> & display,DisplayInfo * info)221 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info)
222 {
223 Parcel data, reply;
224 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
225 data.writeStrongBinder(display);
226 remote()->transact(BnSurfaceComposer::GET_DISPLAY_INFO, data, &reply);
227 memcpy(info, reply.readInplace(sizeof(DisplayInfo)), sizeof(DisplayInfo));
228 return reply.readInt32();
229 }
230 };
231
232 IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
233
234 // ----------------------------------------------------------------------
235
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)236 status_t BnSurfaceComposer::onTransact(
237 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
238 {
239 switch(code) {
240 case CREATE_CONNECTION: {
241 CHECK_INTERFACE(ISurfaceComposer, data, reply);
242 sp<IBinder> b = createConnection()->asBinder();
243 reply->writeStrongBinder(b);
244 return NO_ERROR;
245 }
246 case CREATE_GRAPHIC_BUFFER_ALLOC: {
247 CHECK_INTERFACE(ISurfaceComposer, data, reply);
248 sp<IBinder> b = createGraphicBufferAlloc()->asBinder();
249 reply->writeStrongBinder(b);
250 return NO_ERROR;
251 }
252 case SET_TRANSACTION_STATE: {
253 CHECK_INTERFACE(ISurfaceComposer, data, reply);
254 size_t count = data.readInt32();
255 ComposerState s;
256 Vector<ComposerState> state;
257 state.setCapacity(count);
258 for (size_t i=0 ; i<count ; i++) {
259 s.read(data);
260 state.add(s);
261 }
262 count = data.readInt32();
263 DisplayState d;
264 Vector<DisplayState> displays;
265 displays.setCapacity(count);
266 for (size_t i=0 ; i<count ; i++) {
267 d.read(data);
268 displays.add(d);
269 }
270 uint32_t flags = data.readInt32();
271 setTransactionState(state, displays, flags);
272 return NO_ERROR;
273 }
274 case BOOT_FINISHED: {
275 CHECK_INTERFACE(ISurfaceComposer, data, reply);
276 bootFinished();
277 return NO_ERROR;
278 }
279 case CAPTURE_SCREEN: {
280 CHECK_INTERFACE(ISurfaceComposer, data, reply);
281 sp<IBinder> display = data.readStrongBinder();
282 sp<IGraphicBufferProducer> producer =
283 interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
284 uint32_t reqWidth = data.readInt32();
285 uint32_t reqHeight = data.readInt32();
286 uint32_t minLayerZ = data.readInt32();
287 uint32_t maxLayerZ = data.readInt32();
288 status_t res = captureScreen(display, producer,
289 reqWidth, reqHeight, minLayerZ, maxLayerZ);
290 reply->writeInt32(res);
291 return NO_ERROR;
292 }
293 case AUTHENTICATE_SURFACE: {
294 CHECK_INTERFACE(ISurfaceComposer, data, reply);
295 sp<IGraphicBufferProducer> bufferProducer =
296 interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
297 int32_t result = authenticateSurfaceTexture(bufferProducer) ? 1 : 0;
298 reply->writeInt32(result);
299 return NO_ERROR;
300 }
301 case CREATE_DISPLAY_EVENT_CONNECTION: {
302 CHECK_INTERFACE(ISurfaceComposer, data, reply);
303 sp<IDisplayEventConnection> connection(createDisplayEventConnection());
304 reply->writeStrongBinder(connection->asBinder());
305 return NO_ERROR;
306 }
307 case CREATE_DISPLAY: {
308 CHECK_INTERFACE(ISurfaceComposer, data, reply);
309 String8 displayName = data.readString8();
310 bool secure = bool(data.readInt32());
311 sp<IBinder> display(createDisplay(displayName, secure));
312 reply->writeStrongBinder(display);
313 return NO_ERROR;
314 }
315 case DESTROY_DISPLAY: {
316 CHECK_INTERFACE(ISurfaceComposer, data, reply);
317 sp<IBinder> display = data.readStrongBinder();
318 destroyDisplay(display);
319 return NO_ERROR;
320 }
321 case GET_BUILT_IN_DISPLAY: {
322 CHECK_INTERFACE(ISurfaceComposer, data, reply);
323 int32_t id = data.readInt32();
324 sp<IBinder> display(getBuiltInDisplay(id));
325 reply->writeStrongBinder(display);
326 return NO_ERROR;
327 }
328 case BLANK: {
329 CHECK_INTERFACE(ISurfaceComposer, data, reply);
330 sp<IBinder> display = data.readStrongBinder();
331 blank(display);
332 return NO_ERROR;
333 }
334 case UNBLANK: {
335 CHECK_INTERFACE(ISurfaceComposer, data, reply);
336 sp<IBinder> display = data.readStrongBinder();
337 unblank(display);
338 return NO_ERROR;
339 }
340 case GET_DISPLAY_INFO: {
341 CHECK_INTERFACE(ISurfaceComposer, data, reply);
342 DisplayInfo info;
343 sp<IBinder> display = data.readStrongBinder();
344 status_t result = getDisplayInfo(display, &info);
345 memcpy(reply->writeInplace(sizeof(DisplayInfo)), &info, sizeof(DisplayInfo));
346 reply->writeInt32(result);
347 return NO_ERROR;
348 }
349 default: {
350 return BBinder::onTransact(code, data, reply, flags);
351 }
352 }
353 // should be unreachable
354 return NO_ERROR;
355 }
356
357 // ----------------------------------------------------------------------------
358
359 };
360