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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /image/DecoderFactory.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'image/DecoderFactory.cpp')
-rw-r--r--image/DecoderFactory.cpp350
1 files changed, 350 insertions, 0 deletions
diff --git a/image/DecoderFactory.cpp b/image/DecoderFactory.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "DecoderFactory.h"
+
+#include "nsMimeTypes.h"
+#include "mozilla/RefPtr.h"
+
+#include "AnimationSurfaceProvider.h"
+#include "Decoder.h"
+#include "IDecodingTask.h"
+#include "nsPNGDecoder.h"
+#include "nsGIFDecoder2.h"
+#include "nsJPEGDecoder.h"
+#include "nsBMPDecoder.h"
+#include "nsICODecoder.h"
+#include "nsIconDecoder.h"
+
+namespace mozilla {
+
+using namespace gfx;
+
+namespace image {
+
+/* static */ DecoderType
+DecoderFactory::GetDecoderType(const char* aMimeType)
+{
+ // By default we don't know.
+ DecoderType type = DecoderType::UNKNOWN;
+
+ // PNG
+ if (!strcmp(aMimeType, IMAGE_PNG)) {
+ type = DecoderType::PNG;
+ } else if (!strcmp(aMimeType, IMAGE_X_PNG)) {
+ type = DecoderType::PNG;
+ } else if (!strcmp(aMimeType, IMAGE_APNG)) {
+ type = DecoderType::PNG;
+
+ // GIF
+ } else if (!strcmp(aMimeType, IMAGE_GIF)) {
+ type = DecoderType::GIF;
+
+ // JPEG
+ } else if (!strcmp(aMimeType, IMAGE_JPEG)) {
+ type = DecoderType::JPEG;
+ } else if (!strcmp(aMimeType, IMAGE_PJPEG)) {
+ type = DecoderType::JPEG;
+ } else if (!strcmp(aMimeType, IMAGE_JPG)) {
+ type = DecoderType::JPEG;
+
+ // BMP
+ } else if (!strcmp(aMimeType, IMAGE_BMP)) {
+ type = DecoderType::BMP;
+ } else if (!strcmp(aMimeType, IMAGE_BMP_MS)) {
+ type = DecoderType::BMP;
+
+ // ICO
+ } else if (!strcmp(aMimeType, IMAGE_ICO)) {
+ type = DecoderType::ICO;
+ } else if (!strcmp(aMimeType, IMAGE_ICO_MS)) {
+ type = DecoderType::ICO;
+
+ // Icon
+ } else if (!strcmp(aMimeType, IMAGE_ICON_MS)) {
+ type = DecoderType::ICON;
+ }
+
+ return type;
+}
+
+/* static */ already_AddRefed<Decoder>
+DecoderFactory::GetDecoder(DecoderType aType,
+ RasterImage* aImage,
+ bool aIsRedecode)
+{
+ RefPtr<Decoder> decoder;
+
+ switch (aType) {
+ case DecoderType::PNG:
+ decoder = new nsPNGDecoder(aImage);
+ break;
+ case DecoderType::GIF:
+ decoder = new nsGIFDecoder2(aImage);
+ break;
+ case DecoderType::JPEG:
+ // If we have all the data we don't want to waste cpu time doing
+ // a progressive decode.
+ decoder = new nsJPEGDecoder(aImage,
+ aIsRedecode ? Decoder::SEQUENTIAL
+ : Decoder::PROGRESSIVE);
+ break;
+ case DecoderType::BMP:
+ decoder = new nsBMPDecoder(aImage);
+ break;
+ case DecoderType::ICO:
+ decoder = new nsICODecoder(aImage);
+ break;
+ case DecoderType::ICON:
+ decoder = new nsIconDecoder(aImage);
+ break;
+ default:
+ MOZ_ASSERT_UNREACHABLE("Unknown decoder type");
+ }
+
+ return decoder.forget();
+}
+
+/* static */ already_AddRefed<IDecodingTask>
+DecoderFactory::CreateDecoder(DecoderType aType,
+ NotNull<RasterImage*> aImage,
+ NotNull<SourceBuffer*> aSourceBuffer,
+ const IntSize& aIntrinsicSize,
+ const IntSize& aOutputSize,
+ DecoderFlags aDecoderFlags,
+ SurfaceFlags aSurfaceFlags,
+ int aSampleSize)
+{
+ if (aType == DecoderType::UNKNOWN) {
+ return nullptr;
+ }
+
+ // Create an anonymous decoder. Interaction with the SurfaceCache and the
+ // owning RasterImage will be mediated by DecodedSurfaceProvider.
+ RefPtr<Decoder> decoder =
+ GetDecoder(aType, nullptr, bool(aDecoderFlags & DecoderFlags::IS_REDECODE));
+ MOZ_ASSERT(decoder, "Should have a decoder now");
+
+ // Initialize the decoder.
+ decoder->SetMetadataDecode(false);
+ decoder->SetIterator(aSourceBuffer->Iterator());
+ decoder->SetOutputSize(aOutputSize);
+ decoder->SetDecoderFlags(aDecoderFlags | DecoderFlags::FIRST_FRAME_ONLY);
+ decoder->SetSurfaceFlags(aSurfaceFlags);
+ decoder->SetSampleSize(aSampleSize);
+
+ if (NS_FAILED(decoder->Init())) {
+ return nullptr;
+ }
+
+ // Create a DecodedSurfaceProvider which will manage the decoding process and
+ // make this decoder's output available in the surface cache.
+ SurfaceKey surfaceKey =
+ RasterSurfaceKey(aOutputSize, aSurfaceFlags, PlaybackType::eStatic);
+ NotNull<RefPtr<DecodedSurfaceProvider>> provider =
+ WrapNotNull(new DecodedSurfaceProvider(aImage,
+ surfaceKey,
+ WrapNotNull(decoder)));
+
+ // Attempt to insert the surface provider into the surface cache right away so
+ // we won't trigger any more decoders with the same parameters.
+ if (SurfaceCache::Insert(provider) != InsertOutcome::SUCCESS) {
+ return nullptr;
+ }
+
+ // Return the surface provider in its IDecodingTask guise.
+ RefPtr<IDecodingTask> task = provider.get();
+ return task.forget();
+}
+
+/* static */ already_AddRefed<IDecodingTask>
+DecoderFactory::CreateAnimationDecoder(DecoderType aType,
+ NotNull<RasterImage*> aImage,
+ NotNull<SourceBuffer*> aSourceBuffer,
+ const IntSize& aIntrinsicSize,
+ DecoderFlags aDecoderFlags,
+ SurfaceFlags aSurfaceFlags)
+{
+ if (aType == DecoderType::UNKNOWN) {
+ return nullptr;
+ }
+
+ MOZ_ASSERT(aType == DecoderType::GIF || aType == DecoderType::PNG,
+ "Calling CreateAnimationDecoder for non-animating DecoderType");
+
+ // Create an anonymous decoder. Interaction with the SurfaceCache and the
+ // owning RasterImage will be mediated by AnimationSurfaceProvider.
+ RefPtr<Decoder> decoder = GetDecoder(aType, nullptr, /* aIsRedecode = */ true);
+ MOZ_ASSERT(decoder, "Should have a decoder now");
+
+ // Initialize the decoder.
+ decoder->SetMetadataDecode(false);
+ decoder->SetIterator(aSourceBuffer->Iterator());
+ decoder->SetDecoderFlags(aDecoderFlags | DecoderFlags::IS_REDECODE);
+ decoder->SetSurfaceFlags(aSurfaceFlags);
+
+ if (NS_FAILED(decoder->Init())) {
+ return nullptr;
+ }
+
+ // Create an AnimationSurfaceProvider which will manage the decoding process
+ // and make this decoder's output available in the surface cache.
+ SurfaceKey surfaceKey =
+ RasterSurfaceKey(aIntrinsicSize, aSurfaceFlags, PlaybackType::eAnimated);
+ NotNull<RefPtr<AnimationSurfaceProvider>> provider =
+ WrapNotNull(new AnimationSurfaceProvider(aImage,
+ surfaceKey,
+ WrapNotNull(decoder)));
+
+ // Attempt to insert the surface provider into the surface cache right away so
+ // we won't trigger any more decoders with the same parameters.
+ if (SurfaceCache::Insert(provider) != InsertOutcome::SUCCESS) {
+ return nullptr;
+ }
+
+ // Return the surface provider in its IDecodingTask guise.
+ RefPtr<IDecodingTask> task = provider.get();
+ return task.forget();
+}
+
+/* static */ already_AddRefed<IDecodingTask>
+DecoderFactory::CreateMetadataDecoder(DecoderType aType,
+ NotNull<RasterImage*> aImage,
+ NotNull<SourceBuffer*> aSourceBuffer,
+ int aSampleSize)
+{
+ if (aType == DecoderType::UNKNOWN) {
+ return nullptr;
+ }
+
+ RefPtr<Decoder> decoder =
+ GetDecoder(aType, aImage, /* aIsRedecode = */ false);
+ MOZ_ASSERT(decoder, "Should have a decoder now");
+
+ // Initialize the decoder.
+ decoder->SetMetadataDecode(true);
+ decoder->SetIterator(aSourceBuffer->Iterator());
+ decoder->SetSampleSize(aSampleSize);
+
+ if (NS_FAILED(decoder->Init())) {
+ return nullptr;
+ }
+
+ RefPtr<IDecodingTask> task = new MetadataDecodingTask(WrapNotNull(decoder));
+ return task.forget();
+}
+
+/* static */ already_AddRefed<Decoder>
+DecoderFactory::CreateDecoderForICOResource(DecoderType aType,
+ NotNull<SourceBuffer*> aSourceBuffer,
+ NotNull<nsICODecoder*> aICODecoder,
+ const Maybe<uint32_t>& aDataOffset
+ /* = Nothing() */)
+{
+ // Create the decoder.
+ RefPtr<Decoder> decoder;
+ switch (aType) {
+ case DecoderType::BMP:
+ MOZ_ASSERT(aDataOffset);
+ decoder = new nsBMPDecoder(aICODecoder->GetImageMaybeNull(), *aDataOffset);
+ break;
+
+ case DecoderType::PNG:
+ MOZ_ASSERT(!aDataOffset);
+ decoder = new nsPNGDecoder(aICODecoder->GetImageMaybeNull());
+ break;
+
+ default:
+ MOZ_ASSERT_UNREACHABLE("Invalid ICO resource decoder type");
+ return nullptr;
+ }
+
+ MOZ_ASSERT(decoder);
+
+ // Initialize the decoder, copying settings from @aICODecoder.
+ MOZ_ASSERT(!aICODecoder->IsMetadataDecode());
+ decoder->SetMetadataDecode(aICODecoder->IsMetadataDecode());
+ decoder->SetIterator(aSourceBuffer->Iterator());
+ decoder->SetOutputSize(aICODecoder->OutputSize());
+ decoder->SetDecoderFlags(aICODecoder->GetDecoderFlags());
+ decoder->SetSurfaceFlags(aICODecoder->GetSurfaceFlags());
+
+ if (NS_FAILED(decoder->Init())) {
+ return nullptr;
+ }
+
+ return decoder.forget();
+}
+
+/* static */ already_AddRefed<Decoder>
+DecoderFactory::CreateAnonymousDecoder(DecoderType aType,
+ NotNull<SourceBuffer*> aSourceBuffer,
+ const Maybe<IntSize>& aOutputSize,
+ SurfaceFlags aSurfaceFlags)
+{
+ if (aType == DecoderType::UNKNOWN) {
+ return nullptr;
+ }
+
+ RefPtr<Decoder> decoder =
+ GetDecoder(aType, /* aImage = */ nullptr, /* aIsRedecode = */ false);
+ MOZ_ASSERT(decoder, "Should have a decoder now");
+
+ // Initialize the decoder.
+ decoder->SetMetadataDecode(false);
+ decoder->SetIterator(aSourceBuffer->Iterator());
+
+ // Anonymous decoders are always transient; we don't want to optimize surfaces
+ // or do any other expensive work that might be wasted.
+ DecoderFlags decoderFlags = DecoderFlags::IMAGE_IS_TRANSIENT;
+
+ // Without an image, the decoder can't store anything in the SurfaceCache, so
+ // callers will only be able to retrieve the most recent frame via
+ // Decoder::GetCurrentFrame(). That means that anonymous decoders should
+ // always be first-frame-only decoders, because nobody ever wants the *last*
+ // frame.
+ decoderFlags |= DecoderFlags::FIRST_FRAME_ONLY;
+
+ decoder->SetDecoderFlags(decoderFlags);
+ decoder->SetSurfaceFlags(aSurfaceFlags);
+
+ // Set an output size for downscale-during-decode if requested.
+ if (aOutputSize) {
+ decoder->SetOutputSize(*aOutputSize);
+ }
+
+ if (NS_FAILED(decoder->Init())) {
+ return nullptr;
+ }
+
+ return decoder.forget();
+}
+
+/* static */ already_AddRefed<Decoder>
+DecoderFactory::CreateAnonymousMetadataDecoder(DecoderType aType,
+ NotNull<SourceBuffer*> aSourceBuffer)
+{
+ if (aType == DecoderType::UNKNOWN) {
+ return nullptr;
+ }
+
+ RefPtr<Decoder> decoder =
+ GetDecoder(aType, /* aImage = */ nullptr, /* aIsRedecode = */ false);
+ MOZ_ASSERT(decoder, "Should have a decoder now");
+
+ // Initialize the decoder.
+ decoder->SetMetadataDecode(true);
+ decoder->SetIterator(aSourceBuffer->Iterator());
+ decoder->SetDecoderFlags(DecoderFlags::FIRST_FRAME_ONLY);
+
+ if (NS_FAILED(decoder->Init())) {
+ return nullptr;
+ }
+
+ return decoder.forget();
+}
+
+} // namespace image
+} // namespace mozilla