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 <private/surfaceflinger/LayerState.h>
29
30 #include <surfaceflinger/ISurfaceComposer.h>
31
32 #include <ui/DisplayInfo.h>
33
34 #include <gui/ISurfaceTexture.h>
35
36 #include <utils/Log.h>
37
38 // ---------------------------------------------------------------------------
39
40 #define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
41 #define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
42
43 // ---------------------------------------------------------------------------
44
45 namespace android {
46
47 class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
48 {
49 public:
BpSurfaceComposer(const sp<IBinder> & impl)50 BpSurfaceComposer(const sp<IBinder>& impl)
51 : BpInterface<ISurfaceComposer>(impl)
52 {
53 }
54
createConnection()55 virtual sp<ISurfaceComposerClient> createConnection()
56 {
57 uint32_t n;
58 Parcel data, reply;
59 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
60 remote()->transact(BnSurfaceComposer::CREATE_CONNECTION, data, &reply);
61 return interface_cast<ISurfaceComposerClient>(reply.readStrongBinder());
62 }
63
createGraphicBufferAlloc()64 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc()
65 {
66 uint32_t n;
67 Parcel data, reply;
68 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
69 remote()->transact(BnSurfaceComposer::CREATE_GRAPHIC_BUFFER_ALLOC, data, &reply);
70 return interface_cast<IGraphicBufferAlloc>(reply.readStrongBinder());
71 }
72
getCblk() const73 virtual sp<IMemoryHeap> getCblk() const
74 {
75 Parcel data, reply;
76 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
77 remote()->transact(BnSurfaceComposer::GET_CBLK, data, &reply);
78 return interface_cast<IMemoryHeap>(reply.readStrongBinder());
79 }
80
setTransactionState(const Vector<ComposerState> & state,int orientation)81 virtual void setTransactionState(const Vector<ComposerState>& state,
82 int orientation)
83 {
84 Parcel data, reply;
85 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
86 Vector<ComposerState>::const_iterator b(state.begin());
87 Vector<ComposerState>::const_iterator e(state.end());
88 data.writeInt32(state.size());
89 for ( ; b != e ; ++b ) {
90 b->write(data);
91 }
92 data.writeInt32(orientation);
93 remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply);
94 }
95
bootFinished()96 virtual void bootFinished()
97 {
98 Parcel data, reply;
99 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
100 remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
101 }
102
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)103 virtual status_t captureScreen(DisplayID dpy,
104 sp<IMemoryHeap>* heap,
105 uint32_t* width, uint32_t* height, PixelFormat* format,
106 uint32_t reqWidth, uint32_t reqHeight,
107 uint32_t minLayerZ, uint32_t maxLayerZ)
108 {
109 Parcel data, reply;
110 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
111 data.writeInt32(dpy);
112 data.writeInt32(reqWidth);
113 data.writeInt32(reqHeight);
114 data.writeInt32(minLayerZ);
115 data.writeInt32(maxLayerZ);
116 remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
117 *heap = interface_cast<IMemoryHeap>(reply.readStrongBinder());
118 *width = reply.readInt32();
119 *height = reply.readInt32();
120 *format = reply.readInt32();
121 return reply.readInt32();
122 }
123
turnElectronBeamOff(int32_t mode)124 virtual status_t turnElectronBeamOff(int32_t mode)
125 {
126 Parcel data, reply;
127 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
128 data.writeInt32(mode);
129 remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_OFF, data, &reply);
130 return reply.readInt32();
131 }
132
turnElectronBeamOn(int32_t mode)133 virtual status_t turnElectronBeamOn(int32_t mode)
134 {
135 Parcel data, reply;
136 data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
137 data.writeInt32(mode);
138 remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_ON, data, &reply);
139 return reply.readInt32();
140 }
141
authenticateSurfaceTexture(const sp<ISurfaceTexture> & surfaceTexture) const142 virtual bool authenticateSurfaceTexture(
143 const sp<ISurfaceTexture>& surfaceTexture) const
144 {
145 Parcel data, reply;
146 int err = NO_ERROR;
147 err = data.writeInterfaceToken(
148 ISurfaceComposer::getInterfaceDescriptor());
149 if (err != NO_ERROR) {
150 LOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
151 "interface descriptor: %s (%d)", strerror(-err), -err);
152 return false;
153 }
154 err = data.writeStrongBinder(surfaceTexture->asBinder());
155 if (err != NO_ERROR) {
156 LOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
157 "strong binder to parcel: %s (%d)", strerror(-err), -err);
158 return false;
159 }
160 err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data,
161 &reply);
162 if (err != NO_ERROR) {
163 LOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
164 "performing transaction: %s (%d)", strerror(-err), -err);
165 return false;
166 }
167 int32_t result = 0;
168 err = reply.readInt32(&result);
169 if (err != NO_ERROR) {
170 LOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
171 "retrieving result: %s (%d)", strerror(-err), -err);
172 return false;
173 }
174 return result != 0;
175 }
176 };
177
178 IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
179
180 // ----------------------------------------------------------------------
181
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)182 status_t BnSurfaceComposer::onTransact(
183 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
184 {
185 switch(code) {
186 case CREATE_CONNECTION: {
187 CHECK_INTERFACE(ISurfaceComposer, data, reply);
188 sp<IBinder> b = createConnection()->asBinder();
189 reply->writeStrongBinder(b);
190 } break;
191 case CREATE_GRAPHIC_BUFFER_ALLOC: {
192 CHECK_INTERFACE(ISurfaceComposer, data, reply);
193 sp<IBinder> b = createGraphicBufferAlloc()->asBinder();
194 reply->writeStrongBinder(b);
195 } break;
196 case SET_TRANSACTION_STATE: {
197 CHECK_INTERFACE(ISurfaceComposer, data, reply);
198 size_t count = data.readInt32();
199 ComposerState s;
200 Vector<ComposerState> state;
201 state.setCapacity(count);
202 for (size_t i=0 ; i<count ; i++) {
203 s.read(data);
204 state.add(s);
205 }
206 int orientation = data.readInt32();
207 setTransactionState(state, orientation);
208 } break;
209 case BOOT_FINISHED: {
210 CHECK_INTERFACE(ISurfaceComposer, data, reply);
211 bootFinished();
212 } break;
213 case GET_CBLK: {
214 CHECK_INTERFACE(ISurfaceComposer, data, reply);
215 sp<IBinder> b = getCblk()->asBinder();
216 reply->writeStrongBinder(b);
217 } break;
218 case CAPTURE_SCREEN: {
219 CHECK_INTERFACE(ISurfaceComposer, data, reply);
220 DisplayID dpy = data.readInt32();
221 uint32_t reqWidth = data.readInt32();
222 uint32_t reqHeight = data.readInt32();
223 uint32_t minLayerZ = data.readInt32();
224 uint32_t maxLayerZ = data.readInt32();
225 sp<IMemoryHeap> heap;
226 uint32_t w, h;
227 PixelFormat f;
228 status_t res = captureScreen(dpy, &heap, &w, &h, &f,
229 reqWidth, reqHeight, minLayerZ, maxLayerZ);
230 reply->writeStrongBinder(heap->asBinder());
231 reply->writeInt32(w);
232 reply->writeInt32(h);
233 reply->writeInt32(f);
234 reply->writeInt32(res);
235 } break;
236 case TURN_ELECTRON_BEAM_OFF: {
237 CHECK_INTERFACE(ISurfaceComposer, data, reply);
238 int32_t mode = data.readInt32();
239 status_t res = turnElectronBeamOff(mode);
240 reply->writeInt32(res);
241 } break;
242 case TURN_ELECTRON_BEAM_ON: {
243 CHECK_INTERFACE(ISurfaceComposer, data, reply);
244 int32_t mode = data.readInt32();
245 status_t res = turnElectronBeamOn(mode);
246 reply->writeInt32(res);
247 } break;
248 case AUTHENTICATE_SURFACE: {
249 CHECK_INTERFACE(ISurfaceComposer, data, reply);
250 sp<ISurfaceTexture> surfaceTexture =
251 interface_cast<ISurfaceTexture>(data.readStrongBinder());
252 int32_t result = authenticateSurfaceTexture(surfaceTexture) ? 1 : 0;
253 reply->writeInt32(result);
254 } break;
255 default:
256 return BBinder::onTransact(code, data, reply, flags);
257 }
258 return NO_ERROR;
259 }
260
261 // ----------------------------------------------------------------------------
262
263 };
264