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
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,sp<IMemoryHeap> * heap,uint32_t * width,uint32_t * height,PixelFormat * format,uint32_t reqWidth,uint32_t reqHeight,uint32_t minLayerZ,uint32_t maxLayerZ)105 virtual status_t captureScreen(
106 const sp<IBinder>& display, sp<IMemoryHeap>* heap,
107 uint32_t* width, uint32_t* height, PixelFormat* format,
108 uint32_t reqWidth, uint32_t reqHeight,
109 uint32_t minLayerZ, uint32_t maxLayerZ)
110 {
111 Parcel data, reply;
112 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
113 data.writeStrongBinder(display);
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 *heap = interface_cast<IMemoryHeap>(reply.readStrongBinder());
120 *width = reply.readInt32();
121 *height = reply.readInt32();
122 *format = reply.readInt32();
123 return reply.readInt32();
124 }
125
authenticateSurfaceTexture(const sp<ISurfaceTexture> & surfaceTexture) const126 virtual bool authenticateSurfaceTexture(
127 const sp<ISurfaceTexture>& surfaceTexture) const
128 {
129 Parcel data, reply;
130 int err = NO_ERROR;
131 err = data.writeInterfaceToken(
132 ISurfaceComposer::getInterfaceDescriptor());
133 if (err != NO_ERROR) {
134 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
135 "interface descriptor: %s (%d)", strerror(-err), -err);
136 return false;
137 }
138 err = data.writeStrongBinder(surfaceTexture->asBinder());
139 if (err != NO_ERROR) {
140 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
141 "strong binder to parcel: %s (%d)", strerror(-err), -err);
142 return false;
143 }
144 err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data,
145 &reply);
146 if (err != NO_ERROR) {
147 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
148 "performing transaction: %s (%d)", strerror(-err), -err);
149 return false;
150 }
151 int32_t result = 0;
152 err = reply.readInt32(&result);
153 if (err != NO_ERROR) {
154 ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
155 "retrieving result: %s (%d)", strerror(-err), -err);
156 return false;
157 }
158 return result != 0;
159 }
160
createDisplayEventConnection()161 virtual sp<IDisplayEventConnection> createDisplayEventConnection()
162 {
163 Parcel data, reply;
164 sp<IDisplayEventConnection> result;
165 int err = data.writeInterfaceToken(
166 ISurfaceComposer::getInterfaceDescriptor());
167 if (err != NO_ERROR) {
168 return result;
169 }
170 err = remote()->transact(
171 BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
172 data, &reply);
173 if (err != NO_ERROR) {
174 ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing "
175 "transaction: %s (%d)", strerror(-err), -err);
176 return result;
177 }
178 result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
179 return result;
180 }
181
createDisplay(const String8 & displayName,bool secure)182 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure)
183 {
184 Parcel data, reply;
185 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
186 data.writeString8(displayName);
187 data.writeInt32(secure ? 1 : 0);
188 remote()->transact(BnSurfaceComposer::CREATE_DISPLAY, data, &reply);
189 return reply.readStrongBinder();
190 }
191
getBuiltInDisplay(int32_t id)192 virtual sp<IBinder> getBuiltInDisplay(int32_t id)
193 {
194 Parcel data, reply;
195 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
196 data.writeInt32(id);
197 remote()->transact(BnSurfaceComposer::GET_BUILT_IN_DISPLAY, data, &reply);
198 return reply.readStrongBinder();
199 }
200
blank(const sp<IBinder> & display)201 virtual void blank(const sp<IBinder>& display)
202 {
203 Parcel data, reply;
204 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
205 data.writeStrongBinder(display);
206 remote()->transact(BnSurfaceComposer::BLANK, data, &reply);
207 }
208
unblank(const sp<IBinder> & display)209 virtual void unblank(const sp<IBinder>& display)
210 {
211 Parcel data, reply;
212 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
213 data.writeStrongBinder(display);
214 remote()->transact(BnSurfaceComposer::UNBLANK, data, &reply);
215 }
216
getDisplayInfo(const sp<IBinder> & display,DisplayInfo * info)217 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info)
218 {
219 Parcel data, reply;
220 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
221 data.writeStrongBinder(display);
222 remote()->transact(BnSurfaceComposer::GET_DISPLAY_INFO, data, &reply);
223 memcpy(info, reply.readInplace(sizeof(DisplayInfo)), sizeof(DisplayInfo));
224 return reply.readInt32();
225 }
226 };
227
228 IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
229
230 // ----------------------------------------------------------------------
231
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)232 status_t BnSurfaceComposer::onTransact(
233 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
234 {
235 switch(code) {
236 case CREATE_CONNECTION: {
237 CHECK_INTERFACE(ISurfaceComposer, data, reply);
238 sp<IBinder> b = createConnection()->asBinder();
239 reply->writeStrongBinder(b);
240 } break;
241 case CREATE_GRAPHIC_BUFFER_ALLOC: {
242 CHECK_INTERFACE(ISurfaceComposer, data, reply);
243 sp<IBinder> b = createGraphicBufferAlloc()->asBinder();
244 reply->writeStrongBinder(b);
245 } break;
246 case SET_TRANSACTION_STATE: {
247 CHECK_INTERFACE(ISurfaceComposer, data, reply);
248 size_t count = data.readInt32();
249 ComposerState s;
250 Vector<ComposerState> state;
251 state.setCapacity(count);
252 for (size_t i=0 ; i<count ; i++) {
253 s.read(data);
254 state.add(s);
255 }
256 count = data.readInt32();
257 DisplayState d;
258 Vector<DisplayState> displays;
259 displays.setCapacity(count);
260 for (size_t i=0 ; i<count ; i++) {
261 d.read(data);
262 displays.add(d);
263 }
264 uint32_t flags = data.readInt32();
265 setTransactionState(state, displays, flags);
266 } break;
267 case BOOT_FINISHED: {
268 CHECK_INTERFACE(ISurfaceComposer, data, reply);
269 bootFinished();
270 } break;
271 case CAPTURE_SCREEN: {
272 CHECK_INTERFACE(ISurfaceComposer, data, reply);
273 sp<IBinder> display = 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 sp<IMemoryHeap> heap;
279 uint32_t w, h;
280 PixelFormat f;
281 status_t res = captureScreen(display, &heap, &w, &h, &f,
282 reqWidth, reqHeight, minLayerZ, maxLayerZ);
283 reply->writeStrongBinder(heap->asBinder());
284 reply->writeInt32(w);
285 reply->writeInt32(h);
286 reply->writeInt32(f);
287 reply->writeInt32(res);
288 } break;
289 case AUTHENTICATE_SURFACE: {
290 CHECK_INTERFACE(ISurfaceComposer, data, reply);
291 sp<ISurfaceTexture> surfaceTexture =
292 interface_cast<ISurfaceTexture>(data.readStrongBinder());
293 int32_t result = authenticateSurfaceTexture(surfaceTexture) ? 1 : 0;
294 reply->writeInt32(result);
295 } break;
296 case CREATE_DISPLAY_EVENT_CONNECTION: {
297 CHECK_INTERFACE(ISurfaceComposer, data, reply);
298 sp<IDisplayEventConnection> connection(createDisplayEventConnection());
299 reply->writeStrongBinder(connection->asBinder());
300 return NO_ERROR;
301 } break;
302 case CREATE_DISPLAY: {
303 CHECK_INTERFACE(ISurfaceComposer, data, reply);
304 String8 displayName = data.readString8();
305 bool secure = bool(data.readInt32());
306 sp<IBinder> display(createDisplay(displayName, secure));
307 reply->writeStrongBinder(display);
308 return NO_ERROR;
309 } break;
310 case GET_BUILT_IN_DISPLAY: {
311 CHECK_INTERFACE(ISurfaceComposer, data, reply);
312 int32_t id = data.readInt32();
313 sp<IBinder> display(getBuiltInDisplay(id));
314 reply->writeStrongBinder(display);
315 return NO_ERROR;
316 } break;
317 case BLANK: {
318 CHECK_INTERFACE(ISurfaceComposer, data, reply);
319 sp<IBinder> display = data.readStrongBinder();
320 blank(display);
321 } break;
322 case UNBLANK: {
323 CHECK_INTERFACE(ISurfaceComposer, data, reply);
324 sp<IBinder> display = data.readStrongBinder();
325 unblank(display);
326 } break;
327 case GET_DISPLAY_INFO: {
328 CHECK_INTERFACE(ISurfaceComposer, data, reply);
329 DisplayInfo info;
330 sp<IBinder> display = data.readStrongBinder();
331 status_t result = getDisplayInfo(display, &info);
332 memcpy(reply->writeInplace(sizeof(DisplayInfo)), &info, sizeof(DisplayInfo));
333 reply->writeInt32(result);
334 } break;
335 default:
336 return BBinder::onTransact(code, data, reply, flags);
337 }
338 return NO_ERROR;
339 }
340
341 // ----------------------------------------------------------------------------
342
343 };
344