IGraphicBufferProducer.cpp revision 0ec54e156bed93d59900b742c8e9adcfaee90612
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/NativeHandle.h> 22#include <utils/RefBase.h> 23#include <utils/Timers.h> 24#include <utils/Vector.h> 25 26#include <binder/Parcel.h> 27#include <binder/IInterface.h> 28 29#include <gui/IGraphicBufferProducer.h> 30 31namespace android { 32// ---------------------------------------------------------------------------- 33 34enum { 35 REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION, 36 SET_BUFFER_COUNT, 37 DEQUEUE_BUFFER, 38 DETACH_BUFFER, 39 ATTACH_BUFFER, 40 QUEUE_BUFFER, 41 CANCEL_BUFFER, 42 QUERY, 43 CONNECT, 44 DISCONNECT, 45 SET_SIDEBAND_STREAM, 46}; 47 48class BpGraphicBufferProducer : public BpInterface<IGraphicBufferProducer> 49{ 50public: 51 BpGraphicBufferProducer(const sp<IBinder>& impl) 52 : BpInterface<IGraphicBufferProducer>(impl) 53 { 54 } 55 56 virtual status_t requestBuffer(int bufferIdx, sp<GraphicBuffer>* buf) { 57 Parcel data, reply; 58 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 59 data.writeInt32(bufferIdx); 60 status_t result =remote()->transact(REQUEST_BUFFER, data, &reply); 61 if (result != NO_ERROR) { 62 return result; 63 } 64 bool nonNull = reply.readInt32(); 65 if (nonNull) { 66 *buf = new GraphicBuffer(); 67 result = reply.read(**buf); 68 if(result != NO_ERROR) { 69 (*buf).clear(); 70 return result; 71 } 72 } 73 result = reply.readInt32(); 74 return result; 75 } 76 77 virtual status_t setBufferCount(int bufferCount) 78 { 79 Parcel data, reply; 80 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 81 data.writeInt32(bufferCount); 82 status_t result =remote()->transact(SET_BUFFER_COUNT, data, &reply); 83 if (result != NO_ERROR) { 84 return result; 85 } 86 result = reply.readInt32(); 87 return result; 88 } 89 90 virtual status_t dequeueBuffer(int *buf, sp<Fence>* fence, bool async, 91 uint32_t w, uint32_t h, uint32_t format, uint32_t usage) { 92 Parcel data, reply; 93 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 94 data.writeInt32(async); 95 data.writeInt32(w); 96 data.writeInt32(h); 97 data.writeInt32(format); 98 data.writeInt32(usage); 99 status_t result = remote()->transact(DEQUEUE_BUFFER, data, &reply); 100 if (result != NO_ERROR) { 101 return result; 102 } 103 *buf = reply.readInt32(); 104 bool nonNull = reply.readInt32(); 105 if (nonNull) { 106 *fence = new Fence(); 107 reply.read(**fence); 108 } 109 result = reply.readInt32(); 110 return result; 111 } 112 113 virtual status_t detachBuffer(int slot) { 114 Parcel data, reply; 115 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 116 data.writeInt32(slot); 117 status_t result = remote()->transact(DETACH_BUFFER, data, &reply); 118 if (result != NO_ERROR) { 119 return result; 120 } 121 result = reply.readInt32(); 122 return result; 123 } 124 125 virtual status_t attachBuffer(int* slot, const sp<GraphicBuffer>& buffer) { 126 Parcel data, reply; 127 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 128 data.write(*buffer.get()); 129 status_t result = remote()->transact(ATTACH_BUFFER, data, &reply); 130 if (result != NO_ERROR) { 131 return result; 132 } 133 *slot = reply.readInt32(); 134 result = reply.readInt32(); 135 return result; 136 } 137 138 virtual status_t queueBuffer(int buf, 139 const QueueBufferInput& input, QueueBufferOutput* output) { 140 Parcel data, reply; 141 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 142 data.writeInt32(buf); 143 data.write(input); 144 status_t result = remote()->transact(QUEUE_BUFFER, data, &reply); 145 if (result != NO_ERROR) { 146 return result; 147 } 148 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 149 result = reply.readInt32(); 150 return result; 151 } 152 153 virtual void cancelBuffer(int buf, const sp<Fence>& fence) { 154 Parcel data, reply; 155 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 156 data.writeInt32(buf); 157 data.write(*fence.get()); 158 remote()->transact(CANCEL_BUFFER, data, &reply); 159 } 160 161 virtual int query(int what, int* value) { 162 Parcel data, reply; 163 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 164 data.writeInt32(what); 165 status_t result = remote()->transact(QUERY, data, &reply); 166 if (result != NO_ERROR) { 167 return result; 168 } 169 value[0] = reply.readInt32(); 170 result = reply.readInt32(); 171 return result; 172 } 173 174 virtual status_t connect(const sp<IBinder>& token, 175 int api, bool producerControlledByApp, QueueBufferOutput* output) { 176 Parcel data, reply; 177 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 178 data.writeStrongBinder(token); 179 data.writeInt32(api); 180 data.writeInt32(producerControlledByApp); 181 status_t result = remote()->transact(CONNECT, data, &reply); 182 if (result != NO_ERROR) { 183 return result; 184 } 185 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 186 result = reply.readInt32(); 187 return result; 188 } 189 190 virtual status_t disconnect(int api) { 191 Parcel data, reply; 192 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 193 data.writeInt32(api); 194 status_t result =remote()->transact(DISCONNECT, data, &reply); 195 if (result != NO_ERROR) { 196 return result; 197 } 198 result = reply.readInt32(); 199 return result; 200 } 201 202 virtual status_t setSidebandStream(const sp<NativeHandle>& stream) { 203 Parcel data, reply; 204 status_t result; 205 data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor()); 206 if (stream.get()) { 207 data.writeInt32(true); 208 data.writeNativeHandle(stream->handle()); 209 } else { 210 data.writeInt32(false); 211 } 212 if ((result = remote()->transact(SET_SIDEBAND_STREAM, data, &reply)) == NO_ERROR) { 213 result = reply.readInt32(); 214 } 215 return result; 216 } 217}; 218 219IMPLEMENT_META_INTERFACE(GraphicBufferProducer, "android.gui.IGraphicBufferProducer"); 220 221// ---------------------------------------------------------------------- 222 223status_t BnGraphicBufferProducer::onTransact( 224 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 225{ 226 switch(code) { 227 case REQUEST_BUFFER: { 228 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 229 int bufferIdx = data.readInt32(); 230 sp<GraphicBuffer> buffer; 231 int result = requestBuffer(bufferIdx, &buffer); 232 reply->writeInt32(buffer != 0); 233 if (buffer != 0) { 234 reply->write(*buffer); 235 } 236 reply->writeInt32(result); 237 return NO_ERROR; 238 } break; 239 case SET_BUFFER_COUNT: { 240 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 241 int bufferCount = data.readInt32(); 242 int result = setBufferCount(bufferCount); 243 reply->writeInt32(result); 244 return NO_ERROR; 245 } break; 246 case DEQUEUE_BUFFER: { 247 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 248 bool async = data.readInt32(); 249 uint32_t w = data.readInt32(); 250 uint32_t h = data.readInt32(); 251 uint32_t format = data.readInt32(); 252 uint32_t usage = data.readInt32(); 253 int buf; 254 sp<Fence> fence; 255 int result = dequeueBuffer(&buf, &fence, async, w, h, format, usage); 256 reply->writeInt32(buf); 257 reply->writeInt32(fence != NULL); 258 if (fence != NULL) { 259 reply->write(*fence); 260 } 261 reply->writeInt32(result); 262 return NO_ERROR; 263 } break; 264 case DETACH_BUFFER: { 265 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 266 int slot = data.readInt32(); 267 int result = detachBuffer(slot); 268 reply->writeInt32(result); 269 return NO_ERROR; 270 } break; 271 case ATTACH_BUFFER: { 272 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 273 sp<GraphicBuffer> buffer = new GraphicBuffer(); 274 data.read(*buffer.get()); 275 int slot; 276 int result = attachBuffer(&slot, buffer); 277 reply->writeInt32(slot); 278 reply->writeInt32(result); 279 return NO_ERROR; 280 } break; 281 case QUEUE_BUFFER: { 282 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 283 int buf = data.readInt32(); 284 QueueBufferInput input(data); 285 QueueBufferOutput* const output = 286 reinterpret_cast<QueueBufferOutput *>( 287 reply->writeInplace(sizeof(QueueBufferOutput))); 288 status_t result = queueBuffer(buf, input, output); 289 reply->writeInt32(result); 290 return NO_ERROR; 291 } break; 292 case CANCEL_BUFFER: { 293 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 294 int buf = data.readInt32(); 295 sp<Fence> fence = new Fence(); 296 data.read(*fence.get()); 297 cancelBuffer(buf, fence); 298 return NO_ERROR; 299 } break; 300 case QUERY: { 301 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 302 int value; 303 int what = data.readInt32(); 304 int res = query(what, &value); 305 reply->writeInt32(value); 306 reply->writeInt32(res); 307 return NO_ERROR; 308 } break; 309 case CONNECT: { 310 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 311 sp<IBinder> token = data.readStrongBinder(); 312 int api = data.readInt32(); 313 bool producerControlledByApp = data.readInt32(); 314 QueueBufferOutput* const output = 315 reinterpret_cast<QueueBufferOutput *>( 316 reply->writeInplace(sizeof(QueueBufferOutput))); 317 status_t res = connect(token, api, producerControlledByApp, output); 318 reply->writeInt32(res); 319 return NO_ERROR; 320 } break; 321 case DISCONNECT: { 322 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 323 int api = data.readInt32(); 324 status_t res = disconnect(api); 325 reply->writeInt32(res); 326 return NO_ERROR; 327 } break; 328 case SET_SIDEBAND_STREAM: { 329 CHECK_INTERFACE(IGraphicBufferProducer, data, reply); 330 sp<NativeHandle> stream; 331 if (data.readInt32()) { 332 stream = NativeHandle::create(data.readNativeHandle(), true); 333 } 334 status_t result = setSidebandStream(stream); 335 reply->writeInt32(result); 336 return NO_ERROR; 337 } break; 338 } 339 return BBinder::onTransact(code, data, reply, flags); 340} 341 342// ---------------------------------------------------------------------------- 343 344IGraphicBufferProducer::QueueBufferInput::QueueBufferInput(const Parcel& parcel) { 345 parcel.read(*this); 346} 347 348size_t IGraphicBufferProducer::QueueBufferInput::getFlattenedSize() const { 349 return sizeof(timestamp) 350 + sizeof(isAutoTimestamp) 351 + sizeof(crop) 352 + sizeof(scalingMode) 353 + sizeof(transform) 354 + sizeof(async) 355 + fence->getFlattenedSize(); 356} 357 358size_t IGraphicBufferProducer::QueueBufferInput::getFdCount() const { 359 return fence->getFdCount(); 360} 361 362status_t IGraphicBufferProducer::QueueBufferInput::flatten( 363 void*& buffer, size_t& size, int*& fds, size_t& count) const 364{ 365 if (size < getFlattenedSize()) { 366 return NO_MEMORY; 367 } 368 FlattenableUtils::write(buffer, size, timestamp); 369 FlattenableUtils::write(buffer, size, isAutoTimestamp); 370 FlattenableUtils::write(buffer, size, crop); 371 FlattenableUtils::write(buffer, size, scalingMode); 372 FlattenableUtils::write(buffer, size, transform); 373 FlattenableUtils::write(buffer, size, async); 374 return fence->flatten(buffer, size, fds, count); 375} 376 377status_t IGraphicBufferProducer::QueueBufferInput::unflatten( 378 void const*& buffer, size_t& size, int const*& fds, size_t& count) 379{ 380 size_t minNeeded = 381 sizeof(timestamp) 382 + sizeof(isAutoTimestamp) 383 + sizeof(crop) 384 + sizeof(scalingMode) 385 + sizeof(transform) 386 + sizeof(async); 387 388 if (size < minNeeded) { 389 return NO_MEMORY; 390 } 391 392 FlattenableUtils::read(buffer, size, timestamp); 393 FlattenableUtils::read(buffer, size, isAutoTimestamp); 394 FlattenableUtils::read(buffer, size, crop); 395 FlattenableUtils::read(buffer, size, scalingMode); 396 FlattenableUtils::read(buffer, size, transform); 397 FlattenableUtils::read(buffer, size, async); 398 399 fence = new Fence(); 400 return fence->unflatten(buffer, size, fds, count); 401} 402 403}; // namespace android 404