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/ISurfaceTexture.h> 29 30namespace android { 31// ---------------------------------------------------------------------------- 32 33enum { 34 REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION, 35 SET_BUFFER_COUNT, 36 DEQUEUE_BUFFER, 37 QUEUE_BUFFER, 38 CANCEL_BUFFER, 39 QUERY, 40 SET_SYNCHRONOUS_MODE, 41 CONNECT, 42 DISCONNECT, 43}; 44 45 46class BpSurfaceTexture : public BpInterface<ISurfaceTexture> 47{ 48public: 49 BpSurfaceTexture(const sp<IBinder>& impl) 50 : BpInterface<ISurfaceTexture>(impl) 51 { 52 } 53 54 virtual status_t requestBuffer(int bufferIdx, sp<GraphicBuffer>* buf) { 55 Parcel data, reply; 56 data.writeInterfaceToken(ISurfaceTexture::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 reply.read(**buf); 66 } 67 result = reply.readInt32(); 68 return result; 69 } 70 71 virtual status_t setBufferCount(int bufferCount) 72 { 73 Parcel data, reply; 74 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 75 data.writeInt32(bufferCount); 76 status_t result =remote()->transact(SET_BUFFER_COUNT, data, &reply); 77 if (result != NO_ERROR) { 78 return result; 79 } 80 result = reply.readInt32(); 81 return result; 82 } 83 84 virtual status_t dequeueBuffer(int *buf, sp<Fence>& fence, 85 uint32_t w, uint32_t h, uint32_t format, uint32_t usage) { 86 Parcel data, reply; 87 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 88 data.writeInt32(w); 89 data.writeInt32(h); 90 data.writeInt32(format); 91 data.writeInt32(usage); 92 status_t result = remote()->transact(DEQUEUE_BUFFER, data, &reply); 93 if (result != NO_ERROR) { 94 return result; 95 } 96 *buf = reply.readInt32(); 97 fence.clear(); 98 bool hasFence = reply.readInt32(); 99 if (hasFence) { 100 fence = new Fence(); 101 reply.read(*fence.get()); 102 } 103 result = reply.readInt32(); 104 return result; 105 } 106 107 virtual status_t queueBuffer(int buf, 108 const QueueBufferInput& input, QueueBufferOutput* output) { 109 Parcel data, reply; 110 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 111 data.writeInt32(buf); 112 data.write(input); 113 status_t result = remote()->transact(QUEUE_BUFFER, data, &reply); 114 if (result != NO_ERROR) { 115 return result; 116 } 117 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 118 result = reply.readInt32(); 119 return result; 120 } 121 122 virtual void cancelBuffer(int buf, sp<Fence> fence) { 123 Parcel data, reply; 124 bool hasFence = fence.get() && fence->isValid(); 125 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 126 data.writeInt32(buf); 127 data.writeInt32(hasFence); 128 if (hasFence) { 129 data.write(*fence.get()); 130 } 131 remote()->transact(CANCEL_BUFFER, data, &reply); 132 } 133 134 virtual int query(int what, int* value) { 135 Parcel data, reply; 136 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 137 data.writeInt32(what); 138 status_t result = remote()->transact(QUERY, data, &reply); 139 if (result != NO_ERROR) { 140 return result; 141 } 142 value[0] = reply.readInt32(); 143 result = reply.readInt32(); 144 return result; 145 } 146 147 virtual status_t setSynchronousMode(bool enabled) { 148 Parcel data, reply; 149 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 150 data.writeInt32(enabled); 151 status_t result = remote()->transact(SET_SYNCHRONOUS_MODE, data, &reply); 152 if (result != NO_ERROR) { 153 return result; 154 } 155 result = reply.readInt32(); 156 return result; 157 } 158 159 virtual status_t connect(int api, QueueBufferOutput* output) { 160 Parcel data, reply; 161 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 162 data.writeInt32(api); 163 status_t result = remote()->transact(CONNECT, data, &reply); 164 if (result != NO_ERROR) { 165 return result; 166 } 167 memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output)); 168 result = reply.readInt32(); 169 return result; 170 } 171 172 virtual status_t disconnect(int api) { 173 Parcel data, reply; 174 data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor()); 175 data.writeInt32(api); 176 status_t result =remote()->transact(DISCONNECT, data, &reply); 177 if (result != NO_ERROR) { 178 return result; 179 } 180 result = reply.readInt32(); 181 return result; 182 } 183}; 184 185IMPLEMENT_META_INTERFACE(SurfaceTexture, "android.gui.SurfaceTexture"); 186 187// ---------------------------------------------------------------------- 188 189status_t BnSurfaceTexture::onTransact( 190 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 191{ 192 switch(code) { 193 case REQUEST_BUFFER: { 194 CHECK_INTERFACE(ISurfaceTexture, data, reply); 195 int bufferIdx = data.readInt32(); 196 sp<GraphicBuffer> buffer; 197 int result = requestBuffer(bufferIdx, &buffer); 198 reply->writeInt32(buffer != 0); 199 if (buffer != 0) { 200 reply->write(*buffer); 201 } 202 reply->writeInt32(result); 203 return NO_ERROR; 204 } break; 205 case SET_BUFFER_COUNT: { 206 CHECK_INTERFACE(ISurfaceTexture, data, reply); 207 int bufferCount = data.readInt32(); 208 int result = setBufferCount(bufferCount); 209 reply->writeInt32(result); 210 return NO_ERROR; 211 } break; 212 case DEQUEUE_BUFFER: { 213 CHECK_INTERFACE(ISurfaceTexture, data, reply); 214 uint32_t w = data.readInt32(); 215 uint32_t h = data.readInt32(); 216 uint32_t format = data.readInt32(); 217 uint32_t usage = data.readInt32(); 218 int buf; 219 sp<Fence> fence; 220 int result = dequeueBuffer(&buf, fence, w, h, format, usage); 221 bool hasFence = fence.get() && fence->isValid(); 222 reply->writeInt32(buf); 223 reply->writeInt32(hasFence); 224 if (hasFence) { 225 reply->write(*fence.get()); 226 } 227 reply->writeInt32(result); 228 return NO_ERROR; 229 } break; 230 case QUEUE_BUFFER: { 231 CHECK_INTERFACE(ISurfaceTexture, data, reply); 232 int buf = data.readInt32(); 233 QueueBufferInput input(data); 234 QueueBufferOutput* const output = 235 reinterpret_cast<QueueBufferOutput *>( 236 reply->writeInplace(sizeof(QueueBufferOutput))); 237 status_t result = queueBuffer(buf, input, output); 238 reply->writeInt32(result); 239 return NO_ERROR; 240 } break; 241 case CANCEL_BUFFER: { 242 CHECK_INTERFACE(ISurfaceTexture, data, reply); 243 int buf = data.readInt32(); 244 sp<Fence> fence; 245 bool hasFence = data.readInt32(); 246 if (hasFence) { 247 fence = new Fence(); 248 data.read(*fence.get()); 249 } 250 cancelBuffer(buf, fence); 251 return NO_ERROR; 252 } break; 253 case QUERY: { 254 CHECK_INTERFACE(ISurfaceTexture, data, reply); 255 int value; 256 int what = data.readInt32(); 257 int res = query(what, &value); 258 reply->writeInt32(value); 259 reply->writeInt32(res); 260 return NO_ERROR; 261 } break; 262 case SET_SYNCHRONOUS_MODE: { 263 CHECK_INTERFACE(ISurfaceTexture, data, reply); 264 bool enabled = data.readInt32(); 265 status_t res = setSynchronousMode(enabled); 266 reply->writeInt32(res); 267 return NO_ERROR; 268 } break; 269 case CONNECT: { 270 CHECK_INTERFACE(ISurfaceTexture, data, reply); 271 int api = data.readInt32(); 272 QueueBufferOutput* const output = 273 reinterpret_cast<QueueBufferOutput *>( 274 reply->writeInplace(sizeof(QueueBufferOutput))); 275 status_t res = connect(api, output); 276 reply->writeInt32(res); 277 return NO_ERROR; 278 } break; 279 case DISCONNECT: { 280 CHECK_INTERFACE(ISurfaceTexture, data, reply); 281 int api = data.readInt32(); 282 status_t res = disconnect(api); 283 reply->writeInt32(res); 284 return NO_ERROR; 285 } break; 286 } 287 return BBinder::onTransact(code, data, reply, flags); 288} 289 290// ---------------------------------------------------------------------------- 291 292static bool isValid(const sp<Fence>& fence) { 293 return fence.get() && fence->isValid(); 294} 295 296ISurfaceTexture::QueueBufferInput::QueueBufferInput(const Parcel& parcel) { 297 parcel.read(*this); 298} 299 300size_t ISurfaceTexture::QueueBufferInput::getFlattenedSize() const 301{ 302 return sizeof(timestamp) 303 + sizeof(crop) 304 + sizeof(scalingMode) 305 + sizeof(transform) 306 + sizeof(bool) 307 + (isValid(fence) ? fence->getFlattenedSize() : 0); 308} 309 310size_t ISurfaceTexture::QueueBufferInput::getFdCount() const 311{ 312 return isValid(fence) ? fence->getFdCount() : 0; 313} 314 315status_t ISurfaceTexture::QueueBufferInput::flatten(void* buffer, size_t size, 316 int fds[], size_t count) const 317{ 318 status_t err = NO_ERROR; 319 bool haveFence = isValid(fence); 320 char* p = (char*)buffer; 321 memcpy(p, ×tamp, sizeof(timestamp)); p += sizeof(timestamp); 322 memcpy(p, &crop, sizeof(crop)); p += sizeof(crop); 323 memcpy(p, &scalingMode, sizeof(scalingMode)); p += sizeof(scalingMode); 324 memcpy(p, &transform, sizeof(transform)); p += sizeof(transform); 325 memcpy(p, &haveFence, sizeof(haveFence)); p += sizeof(haveFence); 326 if (haveFence) { 327 err = fence->flatten(p, size - (p - (char*)buffer), fds, count); 328 } 329 return err; 330} 331 332status_t ISurfaceTexture::QueueBufferInput::unflatten(void const* buffer, 333 size_t size, int fds[], size_t count) 334{ 335 status_t err = NO_ERROR; 336 bool haveFence; 337 const char* p = (const char*)buffer; 338 memcpy(×tamp, p, sizeof(timestamp)); p += sizeof(timestamp); 339 memcpy(&crop, p, sizeof(crop)); p += sizeof(crop); 340 memcpy(&scalingMode, p, sizeof(scalingMode)); p += sizeof(scalingMode); 341 memcpy(&transform, p, sizeof(transform)); p += sizeof(transform); 342 memcpy(&haveFence, p, sizeof(haveFence)); p += sizeof(haveFence); 343 if (haveFence) { 344 fence = new Fence(); 345 err = fence->unflatten(p, size - (p - (const char*)buffer), fds, count); 346 } 347 return err; 348} 349 350}; // namespace android 351