IGraphicBufferProducer.cpp revision 9f3053de78630815d60cf48a2cf2348cc5867c45
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 30namespace android { 31// ---------------------------------------------------------------------------- 32 33enum { 34 REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION, 35 SET_BUFFER_COUNT, 36 DEQUEUE_BUFFER, 37 DETACH_BUFFER, 38 ATTACH_BUFFER, 39 QUEUE_BUFFER, 40 CANCEL_BUFFER, 41 QUERY, 42 CONNECT, 43 DISCONNECT, 44}; 45 46class BpGraphicBufferProducer : public BpInterface<IGraphicBufferProducer> 47{ 48public: 49 BpGraphicBufferProducer(const sp<IBinder>& impl) 50 : BpInterface<IGraphicBufferProducer>(impl) 51 { 52 } 53 54 virtual status_t requestBuffer(int bufferIdx, sp<GraphicBuffer>* buf) { 55 Parcel data, reply; 56 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 57 data.writeInt32(bufferIdx); 58 status_t result =remote()->transact(REQUEST_BUFFER, data, &reply); 59 if (result != NO_ERROR) { 60 return result; 61 } 62 bool nonNull = reply.readInt32(); 63 if (nonNull) { 64 *buf = new GraphicBuffer(); 65 result = reply.read(**buf); 66 if(result != NO_ERROR) { 67 (*buf).clear(); 68 return result; 69 } 70 } 71 result = reply.readInt32(); 72 return result; 73 } 74 75 virtual status_t setBufferCount(int bufferCount) 76 { 77 Parcel data, reply; 78 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 79 data.writeInt32(bufferCount); 80 status_t result =remote()->transact(SET_BUFFER_COUNT, data, &reply); 81 if (result != NO_ERROR) { 82 return result; 83 } 84 result = reply.readInt32(); 85 return result; 86 } 87 88 virtual status_t dequeueBuffer(int *buf, sp<Fence>* fence, bool async, 89 uint32_t w, uint32_t h, uint32_t format, uint32_t usage) { 90 Parcel data, reply; 91 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 92 data.writeInt32(async); 93 data.writeInt32(w); 94 data.writeInt32(h); 95 data.writeInt32(format); 96 data.writeInt32(usage); 97 status_t result = remote()->transact(DEQUEUE_BUFFER, data, &reply); 98 if (result != NO_ERROR) { 99 return result; 100 } 101 *buf = reply.readInt32(); 102 bool nonNull = reply.readInt32(); 103 if (nonNull) { 104 *fence = new Fence(); 105 reply.read(**fence); 106 } 107 result = reply.readInt32(); 108 return result; 109 } 110 111 virtual status_t detachBuffer(int slot) { 112 Parcel data, reply; 113 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 114 data.writeInt32(slot); 115 status_t result = remote()->transact(DETACH_BUFFER, data, &reply); 116 if (result != NO_ERROR) { 117 return result; 118 } 119 result = reply.readInt32(); 120 return result; 121 } 122 123 virtual status_t attachBuffer(int* slot, const sp<GraphicBuffer>& buffer) { 124 Parcel data, reply; 125 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 126 data.write(*buffer.get()); 127 status_t result = remote()->transact(ATTACH_BUFFER, data, &reply); 128 if (result != NO_ERROR) { 129 return result; 130 } 131 *slot = reply.readInt32(); 132 result = reply.readInt32(); 133 return result; 134 } 135 136 virtual status_t queueBuffer(int buf, 137 const QueueBufferInput& input, QueueBufferOutput* output) { 138 Parcel data, reply; 139 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 140 data.writeInt32(buf); 141 data.write(input); 142 status_t result = remote()->transact(QUEUE_BUFFER, data, &reply); 143 if (result != NO_ERROR) { 144 return result; 145 } 146 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 147 result = reply.readInt32(); 148 return result; 149 } 150 151 virtual void cancelBuffer(int buf, const sp<Fence>& fence) { 152 Parcel data, reply; 153 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 154 data.writeInt32(buf); 155 data.write(*fence.get()); 156 remote()->transact(CANCEL_BUFFER, data, &reply); 157 } 158 159 virtual int query(int what, int* value) { 160 Parcel data, reply; 161 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 162 data.writeInt32(what); 163 status_t result = remote()->transact(QUERY, data, &reply); 164 if (result != NO_ERROR) { 165 return result; 166 } 167 value[0] = reply.readInt32(); 168 result = reply.readInt32(); 169 return result; 170 } 171 172 virtual status_t connect(const sp<IBinder>& token, 173 int api, bool producerControlledByApp, QueueBufferOutput* output) { 174 Parcel data, reply; 175 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 176 data.writeStrongBinder(token); 177 data.writeInt32(api); 178 data.writeInt32(producerControlledByApp); 179 status_t result = remote()->transact(CONNECT, data, &reply); 180 if (result != NO_ERROR) { 181 return result; 182 } 183 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 184 result = reply.readInt32(); 185 return result; 186 } 187 188 virtual status_t disconnect(int api) { 189 Parcel data, reply; 190 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 191 data.writeInt32(api); 192 status_t result =remote()->transact(DISCONNECT, data, &reply); 193 if (result != NO_ERROR) { 194 return result; 195 } 196 result = reply.readInt32(); 197 return result; 198 } 199}; 200 201IMPLEMENT_META_INTERFACE(GraphicBufferProducer, "android.gui.IGraphicBufferProducer"); 202 203// ---------------------------------------------------------------------- 204 205status_t BnGraphicBufferProducer::onTransact( 206 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 207{ 208 switch(code) { 209 case REQUEST_BUFFER: { 210 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 211 int bufferIdx = data.readInt32(); 212 sp<GraphicBuffer> buffer; 213 int result = requestBuffer(bufferIdx, &buffer); 214 reply->writeInt32(buffer != 0); 215 if (buffer != 0) { 216 reply->write(*buffer); 217 } 218 reply->writeInt32(result); 219 return NO_ERROR; 220 } break; 221 case SET_BUFFER_COUNT: { 222 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 223 int bufferCount = data.readInt32(); 224 int result = setBufferCount(bufferCount); 225 reply->writeInt32(result); 226 return NO_ERROR; 227 } break; 228 case DEQUEUE_BUFFER: { 229 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 230 bool async = data.readInt32(); 231 uint32_t w = data.readInt32(); 232 uint32_t h = data.readInt32(); 233 uint32_t format = data.readInt32(); 234 uint32_t usage = data.readInt32(); 235 int buf; 236 sp<Fence> fence; 237 int result = dequeueBuffer(&buf, &fence, async, w, h, format, usage); 238 reply->writeInt32(buf); 239 reply->writeInt32(fence != NULL); 240 if (fence != NULL) { 241 reply->write(*fence); 242 } 243 reply->writeInt32(result); 244 return NO_ERROR; 245 } break; 246 case DETACH_BUFFER: { 247 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 248 int slot = data.readInt32(); 249 int result = detachBuffer(slot); 250 reply->writeInt32(result); 251 return NO_ERROR; 252 } break; 253 case ATTACH_BUFFER: { 254 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 255 sp<GraphicBuffer> buffer = new GraphicBuffer(); 256 data.read(*buffer.get()); 257 int slot; 258 int result = attachBuffer(&slot, buffer); 259 reply->writeInt32(slot); 260 reply->writeInt32(result); 261 return NO_ERROR; 262 } break; 263 case QUEUE_BUFFER: { 264 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 265 int buf = data.readInt32(); 266 QueueBufferInput input(data); 267 QueueBufferOutput* const output = 268 reinterpret_cast<QueueBufferOutput *>( 269 reply->writeInplace(sizeof(QueueBufferOutput))); 270 status_t result = queueBuffer(buf, input, output); 271 reply->writeInt32(result); 272 return NO_ERROR; 273 } break; 274 case CANCEL_BUFFER: { 275 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 276 int buf = data.readInt32(); 277 sp<Fence> fence = new Fence(); 278 data.read(*fence.get()); 279 cancelBuffer(buf, fence); 280 return NO_ERROR; 281 } break; 282 case QUERY: { 283 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 284 int value; 285 int what = data.readInt32(); 286 int res = query(what, &value); 287 reply->writeInt32(value); 288 reply->writeInt32(res); 289 return NO_ERROR; 290 } break; 291 case CONNECT: { 292 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 293 sp<IBinder> token = data.readStrongBinder(); 294 int api = data.readInt32(); 295 bool producerControlledByApp = data.readInt32(); 296 QueueBufferOutput* const output = 297 reinterpret_cast<QueueBufferOutput *>( 298 reply->writeInplace(sizeof(QueueBufferOutput))); 299 status_t res = connect(token, api, producerControlledByApp, output); 300 reply->writeInt32(res); 301 return NO_ERROR; 302 } break; 303 case DISCONNECT: { 304 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 305 int api = data.readInt32(); 306 status_t res = disconnect(api); 307 reply->writeInt32(res); 308 return NO_ERROR; 309 } break; 310 } 311 return BBinder::onTransact(code, data, reply, flags); 312} 313 314// ---------------------------------------------------------------------------- 315 316IGraphicBufferProducer::QueueBufferInput::QueueBufferInput(const Parcel& parcel) { 317 parcel.read(*this); 318} 319 320size_t IGraphicBufferProducer::QueueBufferInput::getFlattenedSize() const { 321 return sizeof(timestamp) 322 + sizeof(isAutoTimestamp) 323 + sizeof(crop) 324 + sizeof(scalingMode) 325 + sizeof(transform) 326 + sizeof(async) 327 + fence->getFlattenedSize(); 328} 329 330size_t IGraphicBufferProducer::QueueBufferInput::getFdCount() const { 331 return fence->getFdCount(); 332} 333 334status_t IGraphicBufferProducer::QueueBufferInput::flatten( 335 void*& buffer, size_t& size, int*& fds, size_t& count) const 336{ 337 if (size < getFlattenedSize()) { 338 return NO_MEMORY; 339 } 340 FlattenableUtils::write(buffer, size, timestamp); 341 FlattenableUtils::write(buffer, size, isAutoTimestamp); 342 FlattenableUtils::write(buffer, size, crop); 343 FlattenableUtils::write(buffer, size, scalingMode); 344 FlattenableUtils::write(buffer, size, transform); 345 FlattenableUtils::write(buffer, size, async); 346 return fence->flatten(buffer, size, fds, count); 347} 348 349status_t IGraphicBufferProducer::QueueBufferInput::unflatten( 350 void const*& buffer, size_t& size, int const*& fds, size_t& count) 351{ 352 size_t minNeeded = 353 sizeof(timestamp) 354 + sizeof(isAutoTimestamp) 355 + sizeof(crop) 356 + sizeof(scalingMode) 357 + sizeof(transform) 358 + sizeof(async); 359 360 if (size < minNeeded) { 361 return NO_MEMORY; 362 } 363 364 FlattenableUtils::read(buffer, size, timestamp); 365 FlattenableUtils::read(buffer, size, isAutoTimestamp); 366 FlattenableUtils::read(buffer, size, crop); 367 FlattenableUtils::read(buffer, size, scalingMode); 368 FlattenableUtils::read(buffer, size, transform); 369 FlattenableUtils::read(buffer, size, async); 370 371 fence = new Fence(); 372 return fence->unflatten(buffer, size, fds, count); 373} 374 375}; // namespace android 376