/* -*- 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 "gfxPrefs.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" #include "nsWebPDecoder.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; // WebP } else if (!strcmp(aMimeType, IMAGE_WEBP) && gfxPrefs::ImageWebPEnabled()) { type = DecoderType::WEBP; } 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; case DecoderType::WEBP: decoder = new nsWebPDecoder(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 || aType == DecoderType::WEBP, "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