Bitmap.cpp revision 91d6354cde90b6625d4af6a5d909d886bf602a49
1/* 2 * Copyright (C) 2015 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#include "Bitmap.h" 17 18#include "Caches.h" 19#include "renderthread/EglManager.h" 20#include "renderthread/RenderThread.h" 21#include "renderthread/RenderProxy.h" 22 23#include <cutils/log.h> 24#include <sys/mman.h> 25#include <cutils/ashmem.h> 26 27#include <GLES2/gl2.h> 28#include <GLES2/gl2ext.h> 29#include <EGL/egl.h> 30#include <EGL/eglext.h> 31 32 33#include <gui/IGraphicBufferAlloc.h> 34#include <gui/ISurfaceComposer.h> 35#include <private/gui/ComposerService.h> 36#include <binder/IServiceManager.h> 37#include <ui/PixelFormat.h> 38 39#include <SkCanvas.h> 40 41namespace android { 42 43static bool computeAllocationSize(size_t rowBytes, int height, size_t* size) { 44 int32_t rowBytes32 = SkToS32(rowBytes); 45 int64_t bigSize = (int64_t) height * rowBytes32; 46 if (rowBytes32 < 0 || !sk_64_isS32(bigSize)) { 47 return false; // allocation will be too large 48 } 49 50 *size = sk_64_asS32(bigSize); 51 return true; 52} 53 54typedef sk_sp<Bitmap> (*AllocPixeRef)(size_t allocSize, const SkImageInfo& info, size_t rowBytes, 55 SkColorTable* ctable); 56 57static sk_sp<Bitmap> allocateBitmap(SkBitmap* bitmap, SkColorTable* ctable, AllocPixeRef alloc) { 58 const SkImageInfo& info = bitmap->info(); 59 if (info.colorType() == kUnknown_SkColorType) { 60 LOG_ALWAYS_FATAL("unknown bitmap configuration"); 61 return nullptr; 62 } 63 64 size_t size; 65 66 // we must respect the rowBytes value already set on the bitmap instead of 67 // attempting to compute our own. 68 const size_t rowBytes = bitmap->rowBytes(); 69 if (!computeAllocationSize(rowBytes, bitmap->height(), &size)) { 70 return nullptr; 71 } 72 73 auto wrapper = alloc(size, info, rowBytes, ctable); 74 if (wrapper) { 75 wrapper->getSkBitmap(bitmap); 76 // since we're already allocated, we lockPixels right away 77 // HeapAllocator behaves this way too 78 bitmap->lockPixels(); 79 } 80 return wrapper; 81} 82 83sk_sp<Bitmap> Bitmap::allocateAshmemBitmap(SkBitmap* bitmap, SkColorTable* ctable) { 84 return allocateBitmap(bitmap, ctable, &Bitmap::allocateAshmemBitmap); 85} 86 87static sk_sp<Bitmap> allocateHeapBitmap(size_t size, const SkImageInfo& info, size_t rowBytes, 88 SkColorTable* ctable) { 89 void* addr = calloc(size, 1); 90 if (!addr) { 91 return nullptr; 92 } 93 return sk_sp<Bitmap>(new Bitmap(addr, size, info, rowBytes, ctable)); 94} 95 96#define FENCE_TIMEOUT 2000000000 97 98// TODO: handle SRGB sanely 99static PixelFormat internalFormatToPixelFormat(GLint internalFormat) { 100 switch (internalFormat) { 101 case GL_ALPHA: 102 return PIXEL_FORMAT_TRANSPARENT; 103 case GL_LUMINANCE: 104 return PIXEL_FORMAT_RGBA_8888; 105 case GL_SRGB8_ALPHA8: 106 return PIXEL_FORMAT_RGBA_8888; 107 case GL_RGBA: 108 return PIXEL_FORMAT_RGBA_8888; 109 case GL_RGB: 110 return PIXEL_FORMAT_RGB_565; 111 default: 112 LOG_ALWAYS_FATAL("Unsupported bitmap colorType: %d", internalFormat); 113 return PIXEL_FORMAT_UNKNOWN; 114 } 115} 116 117class AutoEglFence { 118public: 119 AutoEglFence(EGLDisplay display) 120 : mDisplay(display) { 121 fence = eglCreateSyncKHR(mDisplay, EGL_SYNC_FENCE_KHR, NULL); 122 } 123 124 ~AutoEglFence() { 125 if (fence != EGL_NO_SYNC_KHR) { 126 eglDestroySyncKHR(mDisplay, fence); 127 } 128 } 129 130 EGLSyncKHR fence = EGL_NO_SYNC_KHR; 131private: 132 EGLDisplay mDisplay = EGL_NO_DISPLAY; 133}; 134 135class AutoEglImage { 136public: 137 AutoEglImage(EGLDisplay display, EGLClientBuffer clientBuffer) 138 : mDisplay(display) { 139 EGLint imageAttrs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE }; 140 image = eglCreateImageKHR(display, EGL_NO_CONTEXT, 141 EGL_NATIVE_BUFFER_ANDROID, clientBuffer, imageAttrs); 142 } 143 144 ~AutoEglImage() { 145 if (image != EGL_NO_IMAGE_KHR) { 146 eglDestroyImageKHR(mDisplay, image); 147 } 148 } 149 150 EGLImageKHR image = EGL_NO_IMAGE_KHR; 151private: 152 EGLDisplay mDisplay = EGL_NO_DISPLAY; 153}; 154 155static bool uploadBitmapToGraphicBuffer(uirenderer::Caches& caches, SkBitmap& bitmap, 156 GraphicBuffer& buffer, GLint format, GLint type) { 157 SkAutoLockPixels alp(bitmap); 158 EGLDisplay display = eglGetCurrentDisplay(); 159 LOG_ALWAYS_FATAL_IF(display == EGL_NO_DISPLAY, 160 "Failed to get EGL_DEFAULT_DISPLAY! err=%s", 161 uirenderer::renderthread::EglManager::eglErrorString()); 162 // These objects are initialized below but the default "null" 163 // values are used to cleanup properly at any point in the 164 // initialization sequenc 165 GLuint texture = 0; 166 // We use an EGLImage to access the content of the GraphicBuffer 167 // The EGL image is later bound to a 2D texture 168 EGLClientBuffer clientBuffer = (EGLClientBuffer) buffer.getNativeBuffer(); 169 AutoEglImage autoImage(display, clientBuffer); 170 if (autoImage.image == EGL_NO_IMAGE_KHR) { 171 ALOGW("Could not create EGL image, err =%s", 172 uirenderer::renderthread::EglManager::eglErrorString()); 173 return false; 174 } 175 glGenTextures(1, &texture); 176 caches.textureState().bindTexture(texture); 177 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, autoImage.image); 178 179 GL_CHECKPOINT(MODERATE); 180 181 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap.width(), bitmap.height(), 182 format, type, bitmap.getPixels()); 183 184 GL_CHECKPOINT(MODERATE); 185 186 // The fence is used to wait for the texture upload to finish 187 // properly. We cannot rely on glFlush() and glFinish() as 188 // some drivers completely ignore these API calls 189 AutoEglFence autoFence(display); 190 if (autoFence.fence == EGL_NO_SYNC_KHR) { 191 LOG_ALWAYS_FATAL("Could not create sync fence %#x", eglGetError()); 192 return false; 193 } 194 // The flag EGL_SYNC_FLUSH_COMMANDS_BIT_KHR will trigger a 195 // pipeline flush (similar to what a glFlush() would do.) 196 EGLint waitStatus = eglClientWaitSyncKHR(display, autoFence.fence, 197 EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, FENCE_TIMEOUT); 198 if (waitStatus != EGL_CONDITION_SATISFIED_KHR) { 199 LOG_ALWAYS_FATAL("Failed to wait for the fence %#x", eglGetError()); 200 return false; 201 } 202 return true; 203} 204 205sk_sp<Bitmap> Bitmap::allocateHardwareBitmap(uirenderer::renderthread::RenderThread& renderThread, 206 SkBitmap& skBitmap) { 207 renderThread.eglManager().initialize(); 208 uirenderer::Caches& caches = uirenderer::Caches::getInstance(); 209 210 sp<ISurfaceComposer> composer(ComposerService::getComposerService()); 211 sp<IGraphicBufferAlloc> alloc(composer->createGraphicBufferAlloc()); 212 if (alloc == NULL) { 213 ALOGW("createGraphicBufferAlloc() failed in GraphicBuffer.create()"); 214 return nullptr; 215 } 216 217 const SkImageInfo& info = skBitmap.info(); 218 if (info.colorType() == kUnknown_SkColorType) { 219 ALOGW("unable to create hardware bitmap of configuration"); 220 return nullptr; 221 } 222 223 sk_sp<SkColorSpace> sRGB = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named); 224 bool needSRGB = skBitmap.info().colorSpace() == sRGB.get(); 225 bool hasSRGB = caches.extensions().hasSRGB(); 226 GLint format, type, internalFormat; 227 uirenderer::Texture::colorTypeToGlFormatAndType(caches, skBitmap.colorType(), 228 needSRGB, &internalFormat, &format, &type); 229 230 PixelFormat pixelFormat = internalFormatToPixelFormat(internalFormat); 231 status_t error; 232 sp<GraphicBuffer> buffer = alloc->createGraphicBuffer(info.width(), info.height(), pixelFormat, 233 1, GraphicBuffer::USAGE_HW_TEXTURE | GraphicBuffer::USAGE_SW_WRITE_NEVER 234 | GraphicBuffer::USAGE_SW_READ_NEVER , &error); 235 236 if (!buffer.get()) { 237 ALOGW("createGraphicBuffer() failed in GraphicBuffer.create()"); 238 return nullptr; 239 } 240 241 SkBitmap bitmap; 242 if (CC_UNLIKELY(uirenderer::Texture::hasUnsupportedColorType(skBitmap.info(), 243 hasSRGB, sRGB.get()))) { 244 bitmap = uirenderer::Texture::uploadToN32(skBitmap, hasSRGB, std::move(sRGB)); 245 } else { 246 bitmap = skBitmap; 247 } 248 249 if (!uploadBitmapToGraphicBuffer(caches, bitmap, *buffer, format, type)) { 250 return nullptr; 251 } 252 return sk_sp<Bitmap>(new Bitmap(buffer.get(), info)); 253} 254 255sk_sp<Bitmap> Bitmap::allocateHardwareBitmap(SkBitmap& bitmap) { 256 return uirenderer::renderthread::RenderProxy::allocateHardwareBitmap(bitmap); 257} 258 259sk_sp<Bitmap> Bitmap::allocateHeapBitmap(SkBitmap* bitmap, SkColorTable* ctable) { 260 return allocateBitmap(bitmap, ctable, &android::allocateHeapBitmap); 261} 262 263sk_sp<Bitmap> Bitmap::allocateHeapBitmap(const SkImageInfo& info) { 264 size_t size; 265 if (!computeAllocationSize(info.minRowBytes(), info.height(), &size)) { 266 LOG_ALWAYS_FATAL("trying to allocate too large bitmap"); 267 return nullptr; 268 } 269 return android::allocateHeapBitmap(size, info, info.minRowBytes(), nullptr); 270} 271 272sk_sp<Bitmap> Bitmap::allocateAshmemBitmap(size_t size, const SkImageInfo& info, 273 size_t rowBytes, SkColorTable* ctable) { 274 // Create new ashmem region with read/write priv 275 int fd = ashmem_create_region("bitmap", size); 276 if (fd < 0) { 277 return nullptr; 278 } 279 280 void* addr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 281 if (addr == MAP_FAILED) { 282 close(fd); 283 return nullptr; 284 } 285 286 if (ashmem_set_prot_region(fd, PROT_READ) < 0) { 287 munmap(addr, size); 288 close(fd); 289 return nullptr; 290 } 291 return sk_sp<Bitmap>(new Bitmap(addr, fd, size, info, rowBytes, ctable)); 292} 293 294void FreePixelRef(void* addr, void* context) { 295 auto pixelRef = (SkPixelRef*) context; 296 pixelRef->unlockPixels(); 297 pixelRef->unref(); 298} 299 300sk_sp<Bitmap> Bitmap::createFrom(const SkImageInfo& info, SkPixelRef& pixelRef) { 301 pixelRef.ref(); 302 pixelRef.lockPixels(); 303 return sk_sp<Bitmap>(new Bitmap((void*) pixelRef.pixels(), (void*) &pixelRef, FreePixelRef, 304 info, pixelRef.rowBytes(), pixelRef.colorTable())); 305} 306 307sk_sp<Bitmap> Bitmap::createFrom(sp<GraphicBuffer> graphicBuffer) { 308 PixelFormat format = graphicBuffer->getPixelFormat(); 309 if (!graphicBuffer.get() || format != PIXEL_FORMAT_RGBA_8888) { 310 return nullptr; 311 } 312 SkImageInfo info = SkImageInfo::Make(graphicBuffer->getWidth(), graphicBuffer->getHeight(), 313 kRGBA_8888_SkColorType, kPremul_SkAlphaType); 314 return sk_sp<Bitmap>(new Bitmap(graphicBuffer.get(), info)); 315} 316 317void Bitmap::reconfigure(const SkImageInfo& newInfo, size_t rowBytes, SkColorTable* ctable) { 318 if (kIndex_8_SkColorType != newInfo.colorType()) { 319 ctable = nullptr; 320 } 321 mRowBytes = rowBytes; 322 if (mColorTable.get() != ctable) { 323 mColorTable.reset(SkSafeRef(ctable)); 324 } 325 326 // Need to validate the alpha type to filter against the color type 327 // to prevent things like a non-opaque RGB565 bitmap 328 SkAlphaType alphaType; 329 LOG_ALWAYS_FATAL_IF(!SkColorTypeValidateAlphaType( 330 newInfo.colorType(), newInfo.alphaType(), &alphaType), 331 "Failed to validate alpha type!"); 332 333 // Dirty hack is dirty 334 // TODO: Figure something out here, Skia's current design makes this 335 // really hard to work with. Skia really, really wants immutable objects, 336 // but with the nested-ref-count hackery going on that's just not 337 // feasible without going insane trying to figure it out 338 SkImageInfo* myInfo = const_cast<SkImageInfo*>(&this->info()); 339 *myInfo = newInfo; 340 changeAlphaType(alphaType); 341 342 // Docs say to only call this in the ctor, but we're going to call 343 // it anyway even if this isn't always the ctor. 344 // TODO: Fix this too as part of the above TODO 345 setPreLocked(getStorage(), mRowBytes, mColorTable.get()); 346} 347 348Bitmap::Bitmap(void* address, size_t size, const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable) 349 : SkPixelRef(info) 350 , mPixelStorageType(PixelStorageType::Heap) { 351 mPixelStorage.heap.address = address; 352 mPixelStorage.heap.size = size; 353 reconfigure(info, rowBytes, ctable); 354} 355 356Bitmap::Bitmap(void* address, void* context, FreeFunc freeFunc, 357 const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable) 358 : SkPixelRef(info) 359 , mPixelStorageType(PixelStorageType::External) { 360 mPixelStorage.external.address = address; 361 mPixelStorage.external.context = context; 362 mPixelStorage.external.freeFunc = freeFunc; 363 reconfigure(info, rowBytes, ctable); 364} 365 366Bitmap::Bitmap(void* address, int fd, size_t mappedSize, 367 const SkImageInfo& info, size_t rowBytes, SkColorTable* ctable) 368 : SkPixelRef(info) 369 , mPixelStorageType(PixelStorageType::Ashmem) { 370 mPixelStorage.ashmem.address = address; 371 mPixelStorage.ashmem.fd = fd; 372 mPixelStorage.ashmem.size = mappedSize; 373 reconfigure(info, rowBytes, ctable); 374} 375 376Bitmap::Bitmap(GraphicBuffer* buffer, const SkImageInfo& info) 377 : SkPixelRef(info) 378 , mPixelStorageType(PixelStorageType::Hardware) { 379 mPixelStorage.hardware.buffer = buffer; 380 buffer->incStrong(buffer); 381 mRowBytes = bytesPerPixel(buffer->getPixelFormat()) * buffer->getStride(); 382} 383 384Bitmap::~Bitmap() { 385 switch (mPixelStorageType) { 386 case PixelStorageType::External: 387 mPixelStorage.external.freeFunc(mPixelStorage.external.address, 388 mPixelStorage.external.context); 389 break; 390 case PixelStorageType::Ashmem: 391 munmap(mPixelStorage.ashmem.address, mPixelStorage.ashmem.size); 392 close(mPixelStorage.ashmem.fd); 393 break; 394 case PixelStorageType::Heap: 395 free(mPixelStorage.heap.address); 396 break; 397 case PixelStorageType::Hardware: 398 auto buffer = mPixelStorage.hardware.buffer; 399 buffer->decStrong(buffer); 400 mPixelStorage.hardware.buffer = nullptr; 401 break; 402 403 } 404 405 if (android::uirenderer::Caches::hasInstance()) { 406 android::uirenderer::Caches::getInstance().textureCache.releaseTexture(getStableID()); 407 } 408} 409 410bool Bitmap::hasHardwareMipMap() const { 411 return mHasHardwareMipMap; 412} 413 414void Bitmap::setHasHardwareMipMap(bool hasMipMap) { 415 mHasHardwareMipMap = hasMipMap; 416} 417 418void* Bitmap::getStorage() const { 419 switch (mPixelStorageType) { 420 case PixelStorageType::External: 421 return mPixelStorage.external.address; 422 case PixelStorageType::Ashmem: 423 return mPixelStorage.ashmem.address; 424 case PixelStorageType::Heap: 425 return mPixelStorage.heap.address; 426 case PixelStorageType::Hardware: 427 return nullptr; 428 } 429} 430 431bool Bitmap::onNewLockPixels(LockRec* rec) { 432 rec->fPixels = getStorage(); 433 rec->fRowBytes = mRowBytes; 434 rec->fColorTable = mColorTable.get(); 435 return true; 436} 437 438size_t Bitmap::getAllocatedSizeInBytes() const { 439 return info().getSafeSize(mRowBytes); 440} 441 442int Bitmap::getAshmemFd() const { 443 switch (mPixelStorageType) { 444 case PixelStorageType::Ashmem: 445 return mPixelStorage.ashmem.fd; 446 default: 447 return -1; 448 } 449} 450 451size_t Bitmap::getAllocationByteCount() const { 452 switch (mPixelStorageType) { 453 case PixelStorageType::Heap: 454 return mPixelStorage.heap.size; 455 default: 456 return rowBytes() * height(); 457 } 458} 459 460void Bitmap::reconfigure(const SkImageInfo& info) { 461 reconfigure(info, info.minRowBytes(), nullptr); 462} 463 464void Bitmap::setAlphaType(SkAlphaType alphaType) { 465 if (!SkColorTypeValidateAlphaType(info().colorType(), alphaType, &alphaType)) { 466 return; 467 } 468 469 changeAlphaType(alphaType); 470} 471 472void Bitmap::getSkBitmap(SkBitmap* outBitmap) { 473 outBitmap->setHasHardwareMipMap(mHasHardwareMipMap); 474 if (isHardware()) { 475 ALOGW("Warning: attempt to read pixels from hardware bitmap, which is very slow operation"); 476 outBitmap->allocPixels(info()); 477 uirenderer::renderthread::RenderProxy::copyGraphicBufferInto(graphicBuffer(), outBitmap); 478 return; 479 } 480 outBitmap->setInfo(info(), rowBytes()); 481 outBitmap->setPixelRef(this); 482} 483 484void Bitmap::getSkBitmapForShaders(SkBitmap* outBitmap) { 485 outBitmap->setInfo(info(), rowBytes()); 486 outBitmap->setPixelRef(this); 487 outBitmap->setHasHardwareMipMap(mHasHardwareMipMap); 488} 489 490void Bitmap::getBounds(SkRect* bounds) const { 491 SkASSERT(bounds); 492 bounds->set(0, 0, SkIntToScalar(info().width()), SkIntToScalar(info().height())); 493} 494 495GraphicBuffer* Bitmap::graphicBuffer() { 496 if (isHardware()) { 497 return mPixelStorage.hardware.buffer; 498 } 499 return nullptr; 500} 501 502} // namespace android 503