DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (b9a9e0b6f0df)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "MacIOSurface.h"
#include <OpenGL/gl.h>
#include <QuartzCore/QuartzCore.h>
#include <dlfcn.h>
#include "mozilla/RefPtr.h"
#include "mozilla/Assertions.h"
#include "GLConsts.h"
#include "GLContextCGL.h"

using namespace mozilla;
// IOSurface signatures
#define IOSURFACE_FRAMEWORK_PATH \
  "/System/Library/Frameworks/IOSurface.framework/IOSurface"
#define OPENGL_FRAMEWORK_PATH \
  "/System/Library/Frameworks/OpenGL.framework/OpenGL"
#define COREGRAPHICS_FRAMEWORK_PATH                                      \
  "/System/Library/Frameworks/ApplicationServices.framework/Frameworks/" \
  "CoreGraphics.framework/CoreGraphics"
#define COREVIDEO_FRAMEWORK_PATH                                         \
  "/System/Library/Frameworks/ApplicationServices.framework/Frameworks/" \
  "CoreVideo.framework/CoreVideo"

#define GET_CONST(const_name) \
  ((CFStringRef*)dlsym(sIOSurfaceFramework, const_name))
#define GET_IOSYM(dest, sym_name) \
  (typeof(dest)) dlsym(sIOSurfaceFramework, sym_name)
#define GET_CGLSYM(dest, sym_name) \
  (typeof(dest)) dlsym(sOpenGLFramework, sym_name)
#define GET_CGSYM(dest, sym_name) \
  (typeof(dest)) dlsym(sCoreGraphicsFramework, sym_name)
#define GET_CVSYM(dest, sym_name) \
  (typeof(dest)) dlsym(sCoreVideoFramework, sym_name)

MacIOSurfaceLib::LibraryUnloader MacIOSurfaceLib::sLibraryUnloader;
bool MacIOSurfaceLib::isLoaded = false;
void* MacIOSurfaceLib::sIOSurfaceFramework;
void* MacIOSurfaceLib::sOpenGLFramework;
void* MacIOSurfaceLib::sCoreGraphicsFramework;
void* MacIOSurfaceLib::sCoreVideoFramework;
IOSurfaceCreateFunc MacIOSurfaceLib::sCreate;
IOSurfaceGetIDFunc MacIOSurfaceLib::sGetID;
IOSurfaceLookupFunc MacIOSurfaceLib::sLookup;
IOSurfaceGetBaseAddressFunc MacIOSurfaceLib::sGetBaseAddress;
IOSurfaceGetBaseAddressOfPlaneFunc MacIOSurfaceLib::sGetBaseAddressOfPlane;
IOSurfaceSizePlaneTFunc MacIOSurfaceLib::sWidth;
IOSurfaceSizePlaneTFunc MacIOSurfaceLib::sHeight;
IOSurfaceSizeTFunc MacIOSurfaceLib::sPlaneCount;
IOSurfaceSizePlaneTFunc MacIOSurfaceLib::sBytesPerRow;
IOSurfaceGetPropertyMaximumFunc MacIOSurfaceLib::sGetPropertyMaximum;
IOSurfaceVoidFunc MacIOSurfaceLib::sIncrementUseCount;
IOSurfaceVoidFunc MacIOSurfaceLib::sDecrementUseCount;
IOSurfaceLockFunc MacIOSurfaceLib::sLock;
IOSurfaceUnlockFunc MacIOSurfaceLib::sUnlock;
CGLTexImageIOSurface2DFunc MacIOSurfaceLib::sTexImage;
IOSurfaceContextCreateFunc MacIOSurfaceLib::sIOSurfaceContextCreate;
IOSurfaceContextCreateImageFunc MacIOSurfaceLib::sIOSurfaceContextCreateImage;
IOSurfaceContextGetSurfaceFunc MacIOSurfaceLib::sIOSurfaceContextGetSurface;
CVPixelBufferGetIOSurfaceFunc MacIOSurfaceLib::sCVPixelBufferGetIOSurface;
unsigned int (*MacIOSurfaceLib::sCGContextGetTypePtr)(CGContextRef) = nullptr;
IOSurfacePixelFormatFunc MacIOSurfaceLib::sPixelFormat;

CFStringRef MacIOSurfaceLib::kPropWidth;
CFStringRef MacIOSurfaceLib::kPropHeight;
CFStringRef MacIOSurfaceLib::kPropBytesPerElem;
CFStringRef MacIOSurfaceLib::kPropBytesPerRow;
CFStringRef MacIOSurfaceLib::kPropIsGlobal;

bool MacIOSurfaceLib::isInit() {
  // Guard against trying to reload the library
  // if it is not available.
  if (!isLoaded) LoadLibrary();
  MOZ_ASSERT(sIOSurfaceFramework);
  return sIOSurfaceFramework;
}

IOSurfacePtr MacIOSurfaceLib::IOSurfaceCreate(CFDictionaryRef properties) {
  return sCreate(properties);
}

IOSurfacePtr MacIOSurfaceLib::IOSurfaceLookup(IOSurfaceID aIOSurfaceID) {
  return sLookup(aIOSurfaceID);
}

IOSurfaceID MacIOSurfaceLib::IOSurfaceGetID(IOSurfacePtr aIOSurfacePtr) {
  return sGetID(aIOSurfacePtr);
}

void* MacIOSurfaceLib::IOSurfaceGetBaseAddress(IOSurfacePtr aIOSurfacePtr) {
  return sGetBaseAddress(aIOSurfacePtr);
}

void* MacIOSurfaceLib::IOSurfaceGetBaseAddressOfPlane(
    IOSurfacePtr aIOSurfacePtr, size_t planeIndex) {
  return sGetBaseAddressOfPlane(aIOSurfacePtr, planeIndex);
}

size_t MacIOSurfaceLib::IOSurfaceGetPlaneCount(IOSurfacePtr aIOSurfacePtr) {
  return sPlaneCount(aIOSurfacePtr);
}

size_t MacIOSurfaceLib::IOSurfaceGetWidth(IOSurfacePtr aIOSurfacePtr,
                                          size_t plane) {
  return sWidth(aIOSurfacePtr, plane);
}

size_t MacIOSurfaceLib::IOSurfaceGetHeight(IOSurfacePtr aIOSurfacePtr,
                                           size_t plane) {
  return sHeight(aIOSurfacePtr, plane);
}

size_t MacIOSurfaceLib::IOSurfaceGetBytesPerRow(IOSurfacePtr aIOSurfacePtr,
                                                size_t plane) {
  return sBytesPerRow(aIOSurfacePtr, plane);
}

size_t MacIOSurfaceLib::IOSurfaceGetPropertyMaximum(CFStringRef property) {
  return sGetPropertyMaximum(property);
}

OSType MacIOSurfaceLib::IOSurfaceGetPixelFormat(IOSurfacePtr aIOSurfacePtr) {
  return sPixelFormat(aIOSurfacePtr);
}

IOReturn MacIOSurfaceLib::IOSurfaceLock(IOSurfacePtr aIOSurfacePtr,
                                        uint32_t options, uint32_t* seed) {
  return sLock(aIOSurfacePtr, options, seed);
}

IOReturn MacIOSurfaceLib::IOSurfaceUnlock(IOSurfacePtr aIOSurfacePtr,
                                          uint32_t options, uint32_t* seed) {
  return sUnlock(aIOSurfacePtr, options, seed);
}

void MacIOSurfaceLib::IOSurfaceIncrementUseCount(IOSurfacePtr aIOSurfacePtr) {
  sIncrementUseCount(aIOSurfacePtr);
}

void MacIOSurfaceLib::IOSurfaceDecrementUseCount(IOSurfacePtr aIOSurfacePtr) {
  sDecrementUseCount(aIOSurfacePtr);
}

CGLError MacIOSurfaceLib::CGLTexImageIOSurface2D(
    CGLContextObj ctxt, GLenum target, GLenum internalFormat, GLsizei width,
    GLsizei height, GLenum format, GLenum type, IOSurfacePtr ioSurface,
    GLuint plane) {
  return sTexImage(ctxt, target, internalFormat, width, height, format, type,
                   ioSurface, plane);
}

IOSurfacePtr MacIOSurfaceLib::CVPixelBufferGetIOSurface(
    CVPixelBufferRef aPixelBuffer) {
  return sCVPixelBufferGetIOSurface(aPixelBuffer);
}

CGContextRef MacIOSurfaceLib::IOSurfaceContextCreate(
    IOSurfacePtr aIOSurfacePtr, unsigned aWidth, unsigned aHeight,
    unsigned aBitsPerComponent, unsigned aBytes, CGColorSpaceRef aColorSpace,
    CGBitmapInfo bitmapInfo) {
  if (!sIOSurfaceContextCreate) return nullptr;
  return sIOSurfaceContextCreate(aIOSurfacePtr, aWidth, aHeight,
                                 aBitsPerComponent, aBytes, aColorSpace,
                                 bitmapInfo);
}

CGImageRef MacIOSurfaceLib::IOSurfaceContextCreateImage(CGContextRef aContext) {
  if (!sIOSurfaceContextCreateImage) return nullptr;
  return sIOSurfaceContextCreateImage(aContext);
}

IOSurfacePtr MacIOSurfaceLib::IOSurfaceContextGetSurface(
    CGContextRef aContext) {
  if (!sIOSurfaceContextGetSurface) return nullptr;
  return sIOSurfaceContextGetSurface(aContext);
}

CFStringRef MacIOSurfaceLib::GetIOConst(const char* symbole) {
  CFStringRef* address = (CFStringRef*)dlsym(sIOSurfaceFramework, symbole);
  if (!address) return nullptr;

  return *address;
}

void MacIOSurfaceLib::LoadLibrary() {
  if (isLoaded) {
    return;
  }
  isLoaded = true;
  sIOSurfaceFramework =
      dlopen(IOSURFACE_FRAMEWORK_PATH, RTLD_LAZY | RTLD_LOCAL);
  sOpenGLFramework = dlopen(OPENGL_FRAMEWORK_PATH, RTLD_LAZY | RTLD_LOCAL);

  sCoreGraphicsFramework =
      dlopen(COREGRAPHICS_FRAMEWORK_PATH, RTLD_LAZY | RTLD_LOCAL);

  sCoreVideoFramework =
      dlopen(COREVIDEO_FRAMEWORK_PATH, RTLD_LAZY | RTLD_LOCAL);

  if (!sIOSurfaceFramework || !sOpenGLFramework || !sCoreGraphicsFramework ||
      !sCoreVideoFramework) {
    if (sIOSurfaceFramework) dlclose(sIOSurfaceFramework);
    if (sOpenGLFramework) dlclose(sOpenGLFramework);
    if (sCoreGraphicsFramework) dlclose(sCoreGraphicsFramework);
    if (sCoreVideoFramework) dlclose(sCoreVideoFramework);
    sIOSurfaceFramework = nullptr;
    sOpenGLFramework = nullptr;
    sCoreGraphicsFramework = nullptr;
    sCoreVideoFramework = nullptr;
    return;
  }

  kPropWidth = GetIOConst("kIOSurfaceWidth");
  kPropHeight = GetIOConst("kIOSurfaceHeight");
  kPropBytesPerElem = GetIOConst("kIOSurfaceBytesPerElement");
  kPropBytesPerRow = GetIOConst("kIOSurfaceBytesPerRow");
  kPropIsGlobal = GetIOConst("kIOSurfaceIsGlobal");
  sCreate = GET_IOSYM(sCreate, "IOSurfaceCreate");
  sGetID = GET_IOSYM(sGetID, "IOSurfaceGetID");
  sWidth = GET_IOSYM(sWidth, "IOSurfaceGetWidthOfPlane");
  sHeight = GET_IOSYM(sHeight, "IOSurfaceGetHeightOfPlane");
  sBytesPerRow = GET_IOSYM(sBytesPerRow, "IOSurfaceGetBytesPerRowOfPlane");
  sGetPropertyMaximum =
      GET_IOSYM(sGetPropertyMaximum, "IOSurfaceGetPropertyMaximum");
  sLookup = GET_IOSYM(sLookup, "IOSurfaceLookup");
  sLock = GET_IOSYM(sLock, "IOSurfaceLock");
  sUnlock = GET_IOSYM(sUnlock, "IOSurfaceUnlock");
  sIncrementUseCount =
      GET_IOSYM(sIncrementUseCount, "IOSurfaceIncrementUseCount");
  sDecrementUseCount =
      GET_IOSYM(sDecrementUseCount, "IOSurfaceDecrementUseCount");
  sGetBaseAddress = GET_IOSYM(sGetBaseAddress, "IOSurfaceGetBaseAddress");
  sGetBaseAddressOfPlane =
      GET_IOSYM(sGetBaseAddressOfPlane, "IOSurfaceGetBaseAddressOfPlane");
  sPlaneCount = GET_IOSYM(sPlaneCount, "IOSurfaceGetPlaneCount");
  sPixelFormat = GET_IOSYM(sPixelFormat, "IOSurfaceGetPixelFormat");

  sTexImage = GET_CGLSYM(sTexImage, "CGLTexImageIOSurface2D");
  sCGContextGetTypePtr =
      (unsigned int (*)(CGContext*))dlsym(RTLD_DEFAULT, "CGContextGetType");

  sCVPixelBufferGetIOSurface =
      GET_CVSYM(sCVPixelBufferGetIOSurface, "CVPixelBufferGetIOSurface");

  // Optional symbols
  sIOSurfaceContextCreate =
      GET_CGSYM(sIOSurfaceContextCreate, "CGIOSurfaceContextCreate");
  sIOSurfaceContextCreateImage =
      GET_CGSYM(sIOSurfaceContextCreateImage, "CGIOSurfaceContextCreateImage");
  sIOSurfaceContextGetSurface =
      GET_CGSYM(sIOSurfaceContextGetSurface, "CGIOSurfaceContextGetSurface");

  if (!sCreate || !sGetID || !sLookup || !sTexImage || !sGetBaseAddress ||
      !sGetBaseAddressOfPlane || !sPlaneCount || !kPropWidth || !kPropHeight ||
      !kPropBytesPerElem || !kPropIsGlobal || !sLock || !sUnlock ||
      !sIncrementUseCount || !sDecrementUseCount || !sWidth || !sHeight ||
      !kPropBytesPerRow || !sBytesPerRow || !sGetPropertyMaximum ||
      !sCVPixelBufferGetIOSurface) {
    CloseLibrary();
  }
}

void MacIOSurfaceLib::CloseLibrary() {
  if (sIOSurfaceFramework) {
    dlclose(sIOSurfaceFramework);
  }
  if (sOpenGLFramework) {
    dlclose(sOpenGLFramework);
  }
  if (sCoreVideoFramework) {
    dlclose(sCoreVideoFramework);
  }
  sIOSurfaceFramework = nullptr;
  sOpenGLFramework = nullptr;
  sCoreVideoFramework = nullptr;
}

MacIOSurface::MacIOSurface(IOSurfacePtr aIOSurfacePtr,
                           double aContentsScaleFactor, bool aHasAlpha,
                           gfx::YUVColorSpace aColorSpace)
    : mIOSurfacePtr(aIOSurfacePtr),
      mContentsScaleFactor(aContentsScaleFactor),
      mHasAlpha(aHasAlpha),
      mColorSpace(aColorSpace) {
  CFRetain(mIOSurfacePtr);
  IncrementUseCount();
}

MacIOSurface::~MacIOSurface() {
  DecrementUseCount();
  CFRelease(mIOSurfacePtr);
}

already_AddRefed<MacIOSurface> MacIOSurface::CreateIOSurface(
    int aWidth, int aHeight, double aContentsScaleFactor, bool aHasAlpha) {
  if (!MacIOSurfaceLib::isInit() || aContentsScaleFactor <= 0) return nullptr;

  CFMutableDictionaryRef props = ::CFDictionaryCreateMutable(
      kCFAllocatorDefault, 4, &kCFTypeDictionaryKeyCallBacks,
      &kCFTypeDictionaryValueCallBacks);
  if (!props) return nullptr;

  MOZ_ASSERT((size_t)aWidth <= GetMaxWidth());
  MOZ_ASSERT((size_t)aHeight <= GetMaxHeight());

  int32_t bytesPerElem = 4;
  size_t intScaleFactor = ceil(aContentsScaleFactor);
  aWidth *= intScaleFactor;
  aHeight *= intScaleFactor;
  CFNumberRef cfWidth = ::CFNumberCreate(nullptr, kCFNumberSInt32Type, &aWidth);
  CFNumberRef cfHeight =
      ::CFNumberCreate(nullptr, kCFNumberSInt32Type, &aHeight);
  CFNumberRef cfBytesPerElem =
      ::CFNumberCreate(nullptr, kCFNumberSInt32Type, &bytesPerElem);
  ::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropWidth, cfWidth);
  ::CFRelease(cfWidth);
  ::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropHeight, cfHeight);
  ::CFRelease(cfHeight);
  ::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropBytesPerElem,
                         cfBytesPerElem);
  ::CFRelease(cfBytesPerElem);
  ::CFDictionaryAddValue(props, MacIOSurfaceLib::kPropIsGlobal, kCFBooleanTrue);

  IOSurfacePtr surfaceRef = MacIOSurfaceLib::IOSurfaceCreate(props);
  ::CFRelease(props);

  if (!surfaceRef) return nullptr;

  RefPtr<MacIOSurface> ioSurface =
      new MacIOSurface(surfaceRef, aContentsScaleFactor, aHasAlpha);

  // Release the IOSurface because MacIOSurface retained it
  CFRelease(surfaceRef);

  return ioSurface.forget();
}

already_AddRefed<MacIOSurface> MacIOSurface::LookupSurface(
    IOSurfaceID aIOSurfaceID, double aContentsScaleFactor, bool aHasAlpha,
    gfx::YUVColorSpace aColorSpace) {
  if (!MacIOSurfaceLib::isInit() || aContentsScaleFactor <= 0) return nullptr;

  IOSurfacePtr surfaceRef = MacIOSurfaceLib::IOSurfaceLookup(aIOSurfaceID);
  if (!surfaceRef) return nullptr;

  RefPtr<MacIOSurface> ioSurface = new MacIOSurface(
      surfaceRef, aContentsScaleFactor, aHasAlpha, aColorSpace);

  // Release the IOSurface because MacIOSurface retained it
  CFRelease(surfaceRef);

  return ioSurface.forget();
}

IOSurfaceID MacIOSurface::GetIOSurfaceID() {
  return MacIOSurfaceLib::IOSurfaceGetID(mIOSurfacePtr);
}

void* MacIOSurface::GetBaseAddress() {
  return MacIOSurfaceLib::IOSurfaceGetBaseAddress(mIOSurfacePtr);
}

void* MacIOSurface::GetBaseAddressOfPlane(size_t aPlaneIndex) {
  return MacIOSurfaceLib::IOSurfaceGetBaseAddressOfPlane(mIOSurfacePtr,
                                                         aPlaneIndex);
}

size_t MacIOSurface::GetWidth(size_t plane) {
  size_t intScaleFactor = ceil(mContentsScaleFactor);
  return GetDevicePixelWidth(plane) / intScaleFactor;
}

size_t MacIOSurface::GetHeight(size_t plane) {
  size_t intScaleFactor = ceil(mContentsScaleFactor);
  return GetDevicePixelHeight(plane) / intScaleFactor;
}

size_t MacIOSurface::GetPlaneCount() {
  return MacIOSurfaceLib::IOSurfaceGetPlaneCount(mIOSurfacePtr);
}

/*static*/
size_t MacIOSurface::GetMaxWidth() {
  if (!MacIOSurfaceLib::isInit()) return -1;
  return MacIOSurfaceLib::IOSurfaceGetPropertyMaximum(
      MacIOSurfaceLib::kPropWidth);
}

/*static*/
size_t MacIOSurface::GetMaxHeight() {
  if (!MacIOSurfaceLib::isInit()) return -1;
  return MacIOSurfaceLib::IOSurfaceGetPropertyMaximum(
      MacIOSurfaceLib::kPropHeight);
}

size_t MacIOSurface::GetDevicePixelWidth(size_t plane) {
  return MacIOSurfaceLib::IOSurfaceGetWidth(mIOSurfacePtr, plane);
}

size_t MacIOSurface::GetDevicePixelHeight(size_t plane) {
  return MacIOSurfaceLib::IOSurfaceGetHeight(mIOSurfacePtr, plane);
}

size_t MacIOSurface::GetBytesPerRow(size_t plane) {
  return MacIOSurfaceLib::IOSurfaceGetBytesPerRow(mIOSurfacePtr, plane);
}

OSType MacIOSurface::GetPixelFormat() {
  return MacIOSurfaceLib::IOSurfaceGetPixelFormat(mIOSurfacePtr);
}

void MacIOSurface::IncrementUseCount() {
  MacIOSurfaceLib::IOSurfaceIncrementUseCount(mIOSurfacePtr);
}

void MacIOSurface::DecrementUseCount() {
  MacIOSurfaceLib::IOSurfaceDecrementUseCount(mIOSurfacePtr);
}

#define READ_ONLY 0x1
void MacIOSurface::Lock(bool aReadOnly) {
  MacIOSurfaceLib::IOSurfaceLock(mIOSurfacePtr, aReadOnly ? READ_ONLY : 0,
                                 nullptr);
}

void MacIOSurface::Unlock(bool aReadOnly) {
  MacIOSurfaceLib::IOSurfaceUnlock(mIOSurfacePtr, aReadOnly ? READ_ONLY : 0,
                                   nullptr);
}

using mozilla::gfx::IntSize;
using mozilla::gfx::SourceSurface;
using mozilla::gfx::SurfaceFormat;

static void MacIOSurfaceBufferDeallocator(void* aClosure) {
  MOZ_ASSERT(aClosure);

  delete[] static_cast<unsigned char*>(aClosure);
}

already_AddRefed<SourceSurface> MacIOSurface::GetAsSurface() {
  Lock();
  size_t bytesPerRow = GetBytesPerRow();
  size_t ioWidth = GetDevicePixelWidth();
  size_t ioHeight = GetDevicePixelHeight();

  unsigned char* ioData = (unsigned char*)GetBaseAddress();
  auto* dataCpy =
      new unsigned char[bytesPerRow * ioHeight / sizeof(unsigned char)];
  for (size_t i = 0; i < ioHeight; i++) {
    memcpy(dataCpy + i * bytesPerRow, ioData + i * bytesPerRow, ioWidth * 4);
  }

  Unlock();

  SurfaceFormat format = HasAlpha() ? mozilla::gfx::SurfaceFormat::B8G8R8A8
                                    : mozilla::gfx::SurfaceFormat::B8G8R8X8;

  RefPtr<mozilla::gfx::DataSourceSurface> surf =
      mozilla::gfx::Factory::CreateWrappingDataSourceSurface(
          dataCpy, bytesPerRow, IntSize(ioWidth, ioHeight), format,
          &MacIOSurfaceBufferDeallocator, static_cast<void*>(dataCpy));

  return surf.forget();
}

SurfaceFormat MacIOSurface::GetFormat() {
  OSType pixelFormat = GetPixelFormat();
  if (pixelFormat == '420v') {
    return SurfaceFormat::NV12;
  } else if (pixelFormat == '2vuy') {
    return SurfaceFormat::YUV422;
  } else {
    return HasAlpha() ? SurfaceFormat::R8G8B8A8 : SurfaceFormat::R8G8B8X8;
  }
}

SurfaceFormat MacIOSurface::GetReadFormat() {
  OSType pixelFormat = GetPixelFormat();
  if (pixelFormat == '420v') {
    return SurfaceFormat::NV12;
  } else if (pixelFormat == '2vuy') {
    return SurfaceFormat::R8G8B8X8;
  } else {
    return HasAlpha() ? SurfaceFormat::R8G8B8A8 : SurfaceFormat::R8G8B8X8;
  }
}

CGLError MacIOSurface::CGLTexImageIOSurface2D(CGLContextObj ctx, GLenum target,
                                              GLenum internalFormat,
                                              GLsizei width, GLsizei height,
                                              GLenum format, GLenum type,
                                              GLuint plane) const {
  return MacIOSurfaceLib::CGLTexImageIOSurface2D(ctx, target, internalFormat,
                                                 width, height, format, type,
                                                 mIOSurfacePtr, plane);
}

CGLError MacIOSurface::CGLTexImageIOSurface2D(
    mozilla::gl::GLContext* aGL, CGLContextObj ctx, size_t plane,
    mozilla::gfx::SurfaceFormat* aOutReadFormat) {
  MOZ_ASSERT(plane >= 0);
  bool isCompatibilityProfile = aGL->IsCompatibilityProfile();
  OSType pixelFormat = GetPixelFormat();

  GLenum internalFormat;
  GLenum format;
  GLenum type;
  if (pixelFormat == '420v') {
    MOZ_ASSERT(GetPlaneCount() == 2);
    MOZ_ASSERT(plane < 2);

    // The LOCAL_GL_LUMINANCE and LOCAL_GL_LUMINANCE_ALPHA are the deprecated
    // format. So, use LOCAL_GL_RED and LOCAL_GL_RB if we use core profile.
    // https://www.khronos.org/opengl/wiki/Image_Format#Legacy_Image_Formats
    if (plane == 0) {
      internalFormat = format =
          (isCompatibilityProfile) ? (LOCAL_GL_LUMINANCE) : (LOCAL_GL_RED);
    } else {
      internalFormat = format =
          (isCompatibilityProfile) ? (LOCAL_GL_LUMINANCE_ALPHA) : (LOCAL_GL_RG);
    }
    type = LOCAL_GL_UNSIGNED_BYTE;
    if (aOutReadFormat) {
      *aOutReadFormat = mozilla::gfx::SurfaceFormat::NV12;
    }
  } else if (pixelFormat == '2vuy') {
    MOZ_ASSERT(plane == 0);
    // The YCBCR_422_APPLE ext is only available in compatibility profile. So,
    // we should use RGB_422_APPLE for core profile. The difference between
    // YCBCR_422_APPLE and RGB_422_APPLE is that the YCBCR_422_APPLE converts
    // the YCbCr value to RGB with REC 601 conversion. But the RGB_422_APPLE
    // doesn't contain color conversion. You should do the color conversion by
    // yourself for RGB_422_APPLE.
    //
    // https://www.khronos.org/registry/OpenGL/extensions/APPLE/APPLE_ycbcr_422.txt
    // https://www.khronos.org/registry/OpenGL/extensions/APPLE/APPLE_rgb_422.txt
    if (isCompatibilityProfile) {
      format = LOCAL_GL_YCBCR_422_APPLE;
      if (aOutReadFormat) {
        *aOutReadFormat = mozilla::gfx::SurfaceFormat::R8G8B8X8;
      }
    } else {
      format = LOCAL_GL_RGB_422_APPLE;
      if (aOutReadFormat) {
        *aOutReadFormat = mozilla::gfx::SurfaceFormat::YUV422;
      }
    }
    internalFormat = LOCAL_GL_RGB;
    type = LOCAL_GL_UNSIGNED_SHORT_8_8_APPLE;
  } else {
    MOZ_ASSERT(plane == 0);

    internalFormat = HasAlpha() ? LOCAL_GL_RGBA : LOCAL_GL_RGB;
    format = LOCAL_GL_BGRA;
    type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
    if (aOutReadFormat) {
      *aOutReadFormat = HasAlpha() ? mozilla::gfx::SurfaceFormat::R8G8B8A8
                                   : mozilla::gfx::SurfaceFormat::R8G8B8X8;
    }
  }

  return CGLTexImageIOSurface2D(ctx, LOCAL_GL_TEXTURE_RECTANGLE_ARB,
                                internalFormat, GetDevicePixelWidth(plane),
                                GetDevicePixelHeight(plane), format, type,
                                plane);
}

static CGColorSpaceRef CreateSystemColorSpace() {
  CGColorSpaceRef cspace = ::CGDisplayCopyColorSpace(::CGMainDisplayID());
  if (!cspace) {
    cspace = ::CGColorSpaceCreateDeviceRGB();
  }
  return cspace;
}

CGContextRef MacIOSurface::CreateIOSurfaceContext() {
  CGColorSpaceRef cspace = CreateSystemColorSpace();
  CGContextRef ref = MacIOSurfaceLib::IOSurfaceContextCreate(
      mIOSurfacePtr, GetDevicePixelWidth(), GetDevicePixelHeight(), 8, 32,
      cspace, 0x2002);
  ::CGColorSpaceRelease(cspace);
  return ref;
}

CGImageRef MacIOSurface::CreateImageFromIOSurfaceContext(
    CGContextRef aContext) {
  if (!MacIOSurfaceLib::isInit()) return nullptr;

  return MacIOSurfaceLib::IOSurfaceContextCreateImage(aContext);
}

already_AddRefed<MacIOSurface> MacIOSurface::IOSurfaceContextGetSurface(
    CGContextRef aContext, double aContentsScaleFactor, bool aHasAlpha) {
  if (!MacIOSurfaceLib::isInit() || aContentsScaleFactor <= 0) return nullptr;

  IOSurfacePtr surfaceRef =
      MacIOSurfaceLib::IOSurfaceContextGetSurface(aContext);
  if (!surfaceRef) return nullptr;

  RefPtr<MacIOSurface> ioSurface =
      new MacIOSurface(surfaceRef, aContentsScaleFactor, aHasAlpha);
  return ioSurface.forget();
}

CGContextType GetContextType(CGContextRef ref) {
  if (!MacIOSurfaceLib::isInit() || !MacIOSurfaceLib::sCGContextGetTypePtr)
    return CG_CONTEXT_TYPE_UNKNOWN;

  unsigned int type = MacIOSurfaceLib::sCGContextGetTypePtr(ref);
  if (type == CG_CONTEXT_TYPE_BITMAP) {
    return CG_CONTEXT_TYPE_BITMAP;
  } else if (type == CG_CONTEXT_TYPE_IOSURFACE) {
    return CG_CONTEXT_TYPE_IOSURFACE;
  } else {
    return CG_CONTEXT_TYPE_UNKNOWN;
  }
}