1 /* 2 * Copyright (C) 2010 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 #include <stdint.h> 18 #include <sys/types.h> 19 20 #include <utils/Errors.h> 21 #include <utils/RefBase.h> 22 #include <utils/Vector.h> 23 #include <utils/Timers.h> 24 25 #include <binder/Parcel.h> 26 #include <binder/IInterface.h> 27 28 #include <gui/IGraphicBufferProducer.h> 29 30 namespace android { 31 // ---------------------------------------------------------------------------- 32 33 enum { 34 REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION, 35 SET_BUFFER_COUNT, 36 DEQUEUE_BUFFER, 37 QUEUE_BUFFER, 38 CANCEL_BUFFER, 39 QUERY, 40 CONNECT, 41 DISCONNECT, 42 }; 43 44 class BpGraphicBufferProducer : public BpInterface<IGraphicBufferProducer> 45 { 46 public: 47 BpGraphicBufferProducer(const sp<IBinder>& impl) 48 : BpInterface<IGraphicBufferProducer>(impl) 49 { 50 } 51 52 virtual status_t requestBuffer(int bufferIdx, sp<GraphicBuffer>* buf) { 53 Parcel data, reply; 54 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 55 data.writeInt32(bufferIdx); 56 status_t result =remote()->transact(REQUEST_BUFFER, data, &reply); 57 if (result != NO_ERROR) { 58 return result; 59 } 60 bool nonNull = reply.readInt32(); 61 if (nonNull) { 62 *buf = new GraphicBuffer(); 63 reply.read(**buf); 64 } 65 result = reply.readInt32(); 66 return result; 67 } 68 69 virtual status_t setBufferCount(int bufferCount) 70 { 71 Parcel data, reply; 72 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 73 data.writeInt32(bufferCount); 74 status_t result =remote()->transact(SET_BUFFER_COUNT, data, &reply); 75 if (result != NO_ERROR) { 76 return result; 77 } 78 result = reply.readInt32(); 79 return result; 80 } 81 82 virtual status_t dequeueBuffer(int *buf, sp<Fence>* fence, bool async, 83 uint32_t w, uint32_t h, uint32_t format, uint32_t usage) { 84 Parcel data, reply; 85 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 86 data.writeInt32(async); 87 data.writeInt32(w); 88 data.writeInt32(h); 89 data.writeInt32(format); 90 data.writeInt32(usage); 91 status_t result = remote()->transact(DEQUEUE_BUFFER, data, &reply); 92 if (result != NO_ERROR) { 93 return result; 94 } 95 *buf = reply.readInt32(); 96 bool nonNull = reply.readInt32(); 97 if (nonNull) { 98 *fence = new Fence(); 99 reply.read(**fence); 100 } 101 result = reply.readInt32(); 102 return result; 103 } 104 105 virtual status_t queueBuffer(int buf, 106 const QueueBufferInput& input, QueueBufferOutput* output) { 107 Parcel data, reply; 108 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 109 data.writeInt32(buf); 110 data.write(input); 111 status_t result = remote()->transact(QUEUE_BUFFER, data, &reply); 112 if (result != NO_ERROR) { 113 return result; 114 } 115 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 116 result = reply.readInt32(); 117 return result; 118 } 119 120 virtual void cancelBuffer(int buf, const sp<Fence>& fence) { 121 Parcel data, reply; 122 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 123 data.writeInt32(buf); 124 data.write(*fence.get()); 125 remote()->transact(CANCEL_BUFFER, data, &reply); 126 } 127 128 virtual int query(int what, int* value) { 129 Parcel data, reply; 130 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 131 data.writeInt32(what); 132 status_t result = remote()->transact(QUERY, data, &reply); 133 if (result != NO_ERROR) { 134 return result; 135 } 136 value[0] = reply.readInt32(); 137 result = reply.readInt32(); 138 return result; 139 } 140 141 virtual status_t connect(const sp<IBinder>& token, 142 int api, bool producerControlledByApp, QueueBufferOutput* output) { 143 Parcel data, reply; 144 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 145 data.writeStrongBinder(token); 146 data.writeInt32(api); 147 data.writeInt32(producerControlledByApp); 148 status_t result = remote()->transact(CONNECT, data, &reply); 149 if (result != NO_ERROR) { 150 return result; 151 } 152 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 153 result = reply.readInt32(); 154 return result; 155 } 156 157 virtual status_t disconnect(int api) { 158 Parcel data, reply; 159 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 160 data.writeInt32(api); 161 status_t result =remote()->transact(DISCONNECT, data, &reply); 162 if (result != NO_ERROR) { 163 return result; 164 } 165 result = reply.readInt32(); 166 return result; 167 } 168 }; 169 170 IMPLEMENT_META_INTERFACE(GraphicBufferProducer, "android.gui.IGraphicBufferProducer"); 171 172 // ---------------------------------------------------------------------- 173 174 status_t BnGraphicBufferProducer::onTransact( 175 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 176 { 177 switch(code) { 178 case REQUEST_BUFFER: { 179 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 180 int bufferIdx = data.readInt32(); 181 sp<GraphicBuffer> buffer; 182 int result = requestBuffer(bufferIdx, &buffer); 183 reply->writeInt32(buffer != 0); 184 if (buffer != 0) { 185 reply->write(*buffer); 186 } 187 reply->writeInt32(result); 188 return NO_ERROR; 189 } break; 190 case SET_BUFFER_COUNT: { 191 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 192 int bufferCount = data.readInt32(); 193 int result = setBufferCount(bufferCount); 194 reply->writeInt32(result); 195 return NO_ERROR; 196 } break; 197 case DEQUEUE_BUFFER: { 198 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 199 bool async = data.readInt32(); 200 uint32_t w = data.readInt32(); 201 uint32_t h = data.readInt32(); 202 uint32_t format = data.readInt32(); 203 uint32_t usage = data.readInt32(); 204 int buf; 205 sp<Fence> fence; 206 int result = dequeueBuffer(&buf, &fence, async, w, h, format, usage); 207 reply->writeInt32(buf); 208 reply->writeInt32(fence != NULL); 209 if (fence != NULL) { 210 reply->write(*fence); 211 } 212 reply->writeInt32(result); 213 return NO_ERROR; 214 } break; 215 case QUEUE_BUFFER: { 216 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 217 int buf = data.readInt32(); 218 QueueBufferInput input(data); 219 QueueBufferOutput* const output = 220 reinterpret_cast<QueueBufferOutput *>( 221 reply->writeInplace(sizeof(QueueBufferOutput))); 222 status_t result = queueBuffer(buf, input, output); 223 reply->writeInt32(result); 224 return NO_ERROR; 225 } break; 226 case CANCEL_BUFFER: { 227 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 228 int buf = data.readInt32(); 229 sp<Fence> fence = new Fence(); 230 data.read(*fence.get()); 231 cancelBuffer(buf, fence); 232 return NO_ERROR; 233 } break; 234 case QUERY: { 235 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 236 int value; 237 int what = data.readInt32(); 238 int res = query(what, &value); 239 reply->writeInt32(value); 240 reply->writeInt32(res); 241 return NO_ERROR; 242 } break; 243 case CONNECT: { 244 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 245 sp<IBinder> token = data.readStrongBinder(); 246 int api = data.readInt32(); 247 bool producerControlledByApp = data.readInt32(); 248 QueueBufferOutput* const output = 249 reinterpret_cast<QueueBufferOutput *>( 250 reply->writeInplace(sizeof(QueueBufferOutput))); 251 status_t res = connect(token, api, producerControlledByApp, output); 252 reply->writeInt32(res); 253 return NO_ERROR; 254 } break; 255 case DISCONNECT: { 256 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 257 int api = data.readInt32(); 258 status_t res = disconnect(api); 259 reply->writeInt32(res); 260 return NO_ERROR; 261 } break; 262 } 263 return BBinder::onTransact(code, data, reply, flags); 264 } 265 266 // ---------------------------------------------------------------------------- 267 268 IGraphicBufferProducer::QueueBufferInput::QueueBufferInput(const Parcel& parcel) { 269 parcel.read(*this); 270 } 271 272 size_t IGraphicBufferProducer::QueueBufferInput::getFlattenedSize() const { 273 return sizeof(timestamp) 274 + sizeof(isAutoTimestamp) 275 + sizeof(crop) 276 + sizeof(scalingMode) 277 + sizeof(transform) 278 + sizeof(async) 279 + fence->getFlattenedSize(); 280 } 281 282 size_t IGraphicBufferProducer::QueueBufferInput::getFdCount() const { 283 return fence->getFdCount(); 284 } 285 286 status_t IGraphicBufferProducer::QueueBufferInput::flatten( 287 void*& buffer, size_t& size, int*& fds, size_t& count) const 288 { 289 if (size < getFlattenedSize()) { 290 return NO_MEMORY; 291 } 292 FlattenableUtils::write(buffer, size, timestamp); 293 FlattenableUtils::write(buffer, size, isAutoTimestamp); 294 FlattenableUtils::write(buffer, size, crop); 295 FlattenableUtils::write(buffer, size, scalingMode); 296 FlattenableUtils::write(buffer, size, transform); 297 FlattenableUtils::write(buffer, size, async); 298 return fence->flatten(buffer, size, fds, count); 299 } 300 301 status_t IGraphicBufferProducer::QueueBufferInput::unflatten( 302 void const*& buffer, size_t& size, int const*& fds, size_t& count) 303 { 304 size_t minNeeded = 305 sizeof(timestamp) 306 + sizeof(isAutoTimestamp) 307 + sizeof(crop) 308 + sizeof(scalingMode) 309 + sizeof(transform) 310 + sizeof(async); 311 312 if (size < minNeeded) { 313 return NO_MEMORY; 314 } 315 316 FlattenableUtils::read(buffer, size, timestamp); 317 FlattenableUtils::read(buffer, size, isAutoTimestamp); 318 FlattenableUtils::read(buffer, size, crop); 319 FlattenableUtils::read(buffer, size, scalingMode); 320 FlattenableUtils::read(buffer, size, transform); 321 FlattenableUtils::read(buffer, size, async); 322 323 fence = new Fence(); 324 return fence->unflatten(buffer, size, fds, count); 325 } 326 327 }; // namespace android 328
