/*
* Tries to handle the image with PIEX. If PIEX returns kOk and finds the preview image, create a
* SkJpegCodec. If PIEX returns kFail, then the file is invalid, return nullptr. In other cases,
* fallback to create SkRawCodec for DNG images.
*/
SkCodec* SkRawCodec::NewFromStream(SkStream* stream) {
SkAutoTDelete<SkRawStream> rawStream;
if (is_asset_stream(*stream)) {
rawStream.reset(new SkRawAssetStream(stream));
} else {
rawStream.reset(new SkRawBufferedStream(stream));
}
// Does not take the ownership of rawStream.
SkPiexStream piexStream(rawStream.get());
::piex::PreviewImageData imageData;
if (::piex::IsRaw(&piexStream)) {
::piex::Error error = ::piex::GetPreviewImageData(&piexStream, &imageData);
if (error == ::piex::Error::kOk && imageData.preview.length > 0) {
// transferBuffer() is destructive to the rawStream. Abandon the rawStream after this
// function call.
// FIXME: one may avoid the copy of memoryStream and use the buffered rawStream.
SkMemoryStream* memoryStream =
rawStream->transferBuffer(imageData.preview.offset, imageData.preview.length);
return memoryStream ? SkJpegCodec::NewFromStream(memoryStream) : nullptr;
} else if (error == ::piex::Error::kFail) {
return nullptr;
}
}
// Takes the ownership of the rawStream.
SkAutoTDelete<SkDngImage> dngImage(SkDngImage::NewFromStream(rawStream.release()));
if (!dngImage) {
return nullptr;
}
return new SkRawCodec(dngImage.release());
}
ContextInfo GrContextFactory::getContextInfo(ContextType type, ContextOptions options) {
for (int i = 0; i < fContexts.count(); ++i) {
Context& context = fContexts[i];
if (context.fType == type &&
context.fOptions == options &&
!context.fAbandoned) {
if (context.fGLContext) {
context.fGLContext->makeCurrent();
}
return ContextInfo(context.fGrContext, context.fGLContext);
}
}
SkAutoTDelete<GLTestContext> glCtx;
sk_sp<GrContext> grCtx;
GrBackendContext backendContext = 0;
sk_sp<const GrGLInterface> glInterface;
#ifdef SK_VULKAN
sk_sp<const GrVkBackendContext> vkBackend;
#endif
GrBackend backend = ContextTypeBackend(type);
switch (backend) {
case kOpenGL_GrBackend:
switch (type) {
case kGL_ContextType:
glCtx.reset(CreatePlatformGLTestContext(kGL_GrGLStandard));
break;
case kGLES_ContextType:
glCtx.reset(CreatePlatformGLTestContext(kGLES_GrGLStandard));
break;
#if SK_ANGLE
# ifdef SK_BUILD_FOR_WIN
case kANGLE_ContextType:
glCtx.reset(CreateANGLEDirect3DGLTestContext());
break;
# endif
case kANGLE_GL_ContextType:
glCtx.reset(CreateANGLEOpenGLGLTestContext());
break;
#endif
#if SK_COMMAND_BUFFER
case kCommandBuffer_ContextType:
glCtx.reset(CommandBufferGLTestContext::Create());
break;
#endif
#if SK_MESA
case kMESA_ContextType:
glCtx.reset(CreateMesaGLTestContext());
break;
#endif
case kNullGL_ContextType:
glCtx.reset(CreateNullGLTestContext());
break;
case kDebugGL_ContextType:
glCtx.reset(CreateDebugGLTestContext());
break;
default:
return ContextInfo();
}
if (nullptr == glCtx.get()) {
return ContextInfo();
}
glInterface.reset(SkRef(glCtx->gl()));
// Block NVPR from non-NVPR types.
if (!(kEnableNVPR_ContextOptions & options)) {
glInterface.reset(GrGLInterfaceRemoveNVPR(glInterface.get()));
if (!glInterface) {
return ContextInfo();
}
}
backendContext = reinterpret_cast<GrBackendContext>(glInterface.get());
glCtx->makeCurrent();
break;
#ifdef SK_VULKAN
case kVulkan_GrBackend:
SkASSERT(kVulkan_ContextType == type);
if ((kEnableNVPR_ContextOptions & options) ||
(kRequireSRGBSupport_ContextOptions & options)) {
return ContextInfo();
}
vkBackend.reset(GrVkBackendContext::Create());
if (!vkBackend) {
return ContextInfo();
}
backendContext = reinterpret_cast<GrBackendContext>(vkBackend.get());
// There is some bug (either in Skia or the NV Vulkan driver) where VkDevice
// destruction will hang occaisonally. For some reason having an existing GL
// context fixes this.
if (!fSentinelGLContext) {
fSentinelGLContext.reset(CreatePlatformGLTestContext(kGL_GrGLStandard));
if (!fSentinelGLContext) {
fSentinelGLContext.reset(CreatePlatformGLTestContext(kGLES_GrGLStandard));
}
}
break;
#endif
default:
return ContextInfo();
}
grCtx.reset(GrContext::Create(backend, backendContext, fGlobalOptions));
if (!grCtx.get()) {
return ContextInfo();
}
if (kEnableNVPR_ContextOptions & options) {
if (!grCtx->caps()->shaderCaps()->pathRenderingSupport()) {
return ContextInfo();
}
}
if (kRequireSRGBSupport_ContextOptions & options) {
if (!grCtx->caps()->srgbSupport()) {
return ContextInfo();
}
}
Context& context = fContexts.push_back();
context.fGLContext = glCtx.release();
context.fGrContext = SkRef(grCtx.get());
context.fType = type;
context.fOptions = options;
context.fAbandoned = false;
return ContextInfo(context.fGrContext, context.fGLContext);
}
ContextInfo GrContextFactory::getContextInfo(ContextType type, ContextOptions options) {
for (int i = 0; i < fContexts.count(); ++i) {
Context& context = fContexts[i];
if (context.fType == type &&
context.fOptions == options &&
!context.fAbandoned) {
context.fTestContext->makeCurrent();
return ContextInfo(context.fBackend, context.fTestContext, context.fGrContext);
}
}
SkAutoTDelete<TestContext> testCtx;
sk_sp<GrContext> grCtx;
GrBackendContext backendContext = 0;
sk_sp<const GrGLInterface> glInterface;
GrBackend backend = ContextTypeBackend(type);
switch (backend) {
case kOpenGL_GrBackend: {
GLTestContext* glCtx;
switch (type) {
case kGL_ContextType:
glCtx = CreatePlatformGLTestContext(kGL_GrGLStandard);
break;
case kGLES_ContextType:
glCtx = CreatePlatformGLTestContext(kGLES_GrGLStandard);
break;
#if SK_ANGLE
# ifdef SK_BUILD_FOR_WIN
case kANGLE_ContextType:
glCtx = CreateANGLEDirect3DGLTestContext();
break;
# endif
case kANGLE_GL_ContextType:
glCtx = CreateANGLEOpenGLGLTestContext();
break;
#endif
#if SK_COMMAND_BUFFER
case kCommandBuffer_ContextType:
glCtx = CommandBufferGLTestContext::Create();
break;
#endif
#if SK_MESA
case kMESA_ContextType:
glCtx = CreateMesaGLTestContext();
break;
#endif
case kNullGL_ContextType:
glCtx = CreateNullGLTestContext(kEnableNVPR_ContextOptions & options);
break;
case kDebugGL_ContextType:
glCtx = CreateDebugGLTestContext();
break;
default:
return ContextInfo();
}
if (!glCtx) {
return ContextInfo();
}
testCtx.reset(glCtx);
glInterface.reset(SkRef(glCtx->gl()));
// Block NVPR from non-NVPR types. We don't block NVPR from contexts that will use
// instanced rendering because that would prevent us from testing mixed samples.
if (!((kEnableNVPR_ContextOptions | kUseInstanced_ContextOptions) & options)) {
glInterface.reset(GrGLInterfaceRemoveNVPR(glInterface.get()));
if (!glInterface) {
return ContextInfo();
}
}
backendContext = reinterpret_cast<GrBackendContext>(glInterface.get());
break;
}
#ifdef SK_VULKAN
case kVulkan_GrBackend:
SkASSERT(kVulkan_ContextType == type);
if (kEnableNVPR_ContextOptions & options) {
return ContextInfo();
}
testCtx.reset(CreatePlatformVkTestContext());
if (!testCtx) {
return ContextInfo();
}
// There is some bug (either in Skia or the NV Vulkan driver) where VkDevice
// destruction will hang occaisonally. For some reason having an existing GL
// context fixes this.
if (!fSentinelGLContext) {
fSentinelGLContext.reset(CreatePlatformGLTestContext(kGL_GrGLStandard));
if (!fSentinelGLContext) {
fSentinelGLContext.reset(CreatePlatformGLTestContext(kGLES_GrGLStandard));
}
}
backendContext = testCtx->backendContext();
break;
#endif
default:
return ContextInfo();
}
testCtx->makeCurrent();
SkASSERT(testCtx && testCtx->backend() == backend);
GrContextOptions grOptions = fGlobalOptions;
if (kUseInstanced_ContextOptions & options) {
grOptions.fEnableInstancedRendering = true;
}
grCtx.reset(GrContext::Create(backend, backendContext, grOptions));
if (!grCtx.get()) {
return ContextInfo();
}
if (kEnableNVPR_ContextOptions & options) {
if (!grCtx->caps()->shaderCaps()->pathRenderingSupport()) {
return ContextInfo();
}
}
if (kUseInstanced_ContextOptions & options) {
if (GrCaps::InstancedSupport::kNone == grCtx->caps()->instancedSupport()) {
return ContextInfo();
}
}
if (kRequireSRGBSupport_ContextOptions & options) {
if (!grCtx->caps()->srgbSupport()) {
return ContextInfo();
}
}
Context& context = fContexts.push_back();
context.fBackend = backend;
context.fTestContext = testCtx.release();
context.fGrContext = SkRef(grCtx.get());
context.fType = type;
context.fOptions = options;
context.fAbandoned = false;
return ContextInfo(context.fBackend, context.fTestContext, context.fGrContext);
}
SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* getAdvanceData(
FontHandle fontHandle,
int num_glyphs,
const uint32_t* subsetGlyphIDs,
uint32_t subsetGlyphIDsLength,
bool (*getAdvance)(FontHandle fontHandle, int gId, Data* data)) {
// Assuming that on average, the ASCII representation of an advance plus
// a space is 8 characters and the ASCII representation of a glyph id is 3
// characters, then the following cut offs for using different range types
// apply:
// The cost of stopping and starting the range is 7 characers
// a. Removing 4 0's or don't care's is a win
// The cost of stopping and starting the range plus a run is 22
// characters
// b. Removing 3 repeating advances is a win
// c. Removing 2 repeating advances and 3 don't cares is a win
// When not currently in a range the cost of a run over a range is 16
// characaters, so:
// d. Removing a leading 0/don't cares is a win because it is omitted
// e. Removing 2 repeating advances is a win
SkAutoTDelete<SkAdvancedTypefaceMetrics::AdvanceMetric<Data> > result;
SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* curRange;
SkAdvancedTypefaceMetrics::AdvanceMetric<Data>* prevRange = nullptr;
Data lastAdvance = kInvalidAdvance;
int repeatedAdvances = 0;
int wildCardsInRun = 0;
int trailingWildCards = 0;
uint32_t subsetIndex = 0;
// Limit the loop count to glyph id ranges provided.
int firstIndex = 0;
int lastIndex = num_glyphs;
if (subsetGlyphIDs) {
firstIndex = static_cast<int>(subsetGlyphIDs[0]);
lastIndex =
static_cast<int>(subsetGlyphIDs[subsetGlyphIDsLength - 1]) + 1;
}
curRange = appendRange(&result, firstIndex);
for (int gId = firstIndex; gId <= lastIndex; gId++) {
Data advance = kInvalidAdvance;
if (gId < lastIndex) {
// Get glyph id only when subset is nullptr, or the id is in subset.
SkASSERT(!subsetGlyphIDs || (subsetIndex < subsetGlyphIDsLength &&
static_cast<uint32_t>(gId) <= subsetGlyphIDs[subsetIndex]));
if (!subsetGlyphIDs ||
(subsetIndex < subsetGlyphIDsLength &&
static_cast<uint32_t>(gId) == subsetGlyphIDs[subsetIndex])) {
SkAssertResult(getAdvance(fontHandle, gId, &advance));
++subsetIndex;
} else {
advance = kDontCareAdvance;
}
}
if (advance == lastAdvance) {
repeatedAdvances++;
trailingWildCards = 0;
} else if (advance == kDontCareAdvance) {
wildCardsInRun++;
trailingWildCards++;
} else if (curRange->fAdvance.count() ==
repeatedAdvances + 1 + wildCardsInRun) { // All in run.
if (lastAdvance == 0) {
resetRange(curRange, gId);
trailingWildCards = 0;
} else if (repeatedAdvances + 1 >= 2 || trailingWildCards >= 4) {
finishRange(curRange, gId - 1,
SkAdvancedTypefaceMetrics::WidthRange::kRun);
prevRange = curRange;
curRange = appendRange(&curRange->fNext, gId);
trailingWildCards = 0;
}
repeatedAdvances = 0;
wildCardsInRun = trailingWildCards;
trailingWildCards = 0;
} else {
if (lastAdvance == 0 &&
repeatedAdvances + 1 + wildCardsInRun >= 4) {
finishRange(curRange,
gId - repeatedAdvances - wildCardsInRun - 2,
SkAdvancedTypefaceMetrics::WidthRange::kRange);
prevRange = curRange;
curRange = appendRange(&curRange->fNext, gId);
trailingWildCards = 0;
} else if (trailingWildCards >= 4 && repeatedAdvances + 1 < 2) {
finishRange(curRange,
gId - trailingWildCards - 1,
SkAdvancedTypefaceMetrics::WidthRange::kRange);
prevRange = curRange;
curRange = appendRange(&curRange->fNext, gId);
trailingWildCards = 0;
} else if (lastAdvance != 0 &&
(repeatedAdvances + 1 >= 3 ||
(repeatedAdvances + 1 >= 2 && wildCardsInRun >= 3))) {
finishRange(curRange,
gId - repeatedAdvances - wildCardsInRun - 2,
SkAdvancedTypefaceMetrics::WidthRange::kRange);
curRange =
appendRange(&curRange->fNext,
gId - repeatedAdvances - wildCardsInRun - 1);
curRange->fAdvance.append(1, &lastAdvance);
finishRange(curRange, gId - 1,
SkAdvancedTypefaceMetrics::WidthRange::kRun);
prevRange = curRange;
curRange = appendRange(&curRange->fNext, gId);
trailingWildCards = 0;
}
repeatedAdvances = 0;
wildCardsInRun = trailingWildCards;
trailingWildCards = 0;
}
curRange->fAdvance.append(1, &advance);
if (advance != kDontCareAdvance) {
lastAdvance = advance;
}
}
if (curRange->fStartId == lastIndex) {
SkASSERT(prevRange);
SkASSERT(prevRange->fNext->fStartId == lastIndex);
prevRange->fNext.reset();
} else {
finishRange(curRange, lastIndex - 1,
SkAdvancedTypefaceMetrics::WidthRange::kRange);
}
return result.release();
}