| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_DECODING_IMAGE_GENERATOR_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_DECODING_IMAGE_GENERATOR_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/scoped_refptr.h" |
| #include "third_party/blink/public/platform/web_vector.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/paint_image.h" |
| #include "third_party/blink/renderer/platform/image-decoders/segment_reader.h" |
| #include "third_party/blink/renderer/platform/platform_export.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" |
| #include "third_party/skia/include/core/SkImageInfo.h" |
| #include "third_party/skia/include/core/SkYUVAPixmaps.h" |
| |
| class SkData; |
| |
| namespace blink { |
| |
| class ImageFrameGenerator; |
| |
| // Implements SkImageGenerator, used by SkPixelRef to populate a discardable |
| // memory with a decoded image frame. ImageFrameGenerator does the actual |
| // decoding. |
| class PLATFORM_EXPORT DecodingImageGenerator final |
| : public PaintImageGenerator { |
| USING_FAST_MALLOC(DecodingImageGenerator); |
| |
| public: |
| // Aside from tests, this is used to create a decoder from SkData in Skia |
| // (exported via WebImageGenerator and set via |
| // SkGraphics::SetImageGeneratorFromEncodedDataFactory) |
| static std::unique_ptr<SkImageGenerator> CreateAsSkImageGenerator( |
| sk_sp<SkData>); |
| |
| static sk_sp<DecodingImageGenerator> Create( |
| scoped_refptr<ImageFrameGenerator>, |
| const SkImageInfo&, |
| scoped_refptr<SegmentReader>, |
| WebVector<FrameMetadata>, |
| PaintImage::ContentId, |
| bool all_data_received, |
| bool can_yuv_decode, |
| const cc::ImageHeaderMetadata& image_metadata); |
| |
| ~DecodingImageGenerator() override; |
| |
| // PaintImageGenerator implementation. |
| sk_sp<SkData> GetEncodedData() const override; |
| bool GetPixels(const SkImageInfo&, |
| void* pixels, |
| size_t row_bytes, |
| size_t frame_index, |
| PaintImage::GeneratorClientId client_id, |
| uint32_t lazy_pixel_ref) override; |
| |
| bool QueryYUVA( |
| const SkYUVAPixmapInfo::SupportedDataTypes& supported_data_types, |
| SkYUVAPixmapInfo* yuva_pixmap_info) const override; |
| |
| bool GetYUVAPlanes(const SkYUVAPixmaps& pixmaps, |
| size_t frame_index, |
| uint32_t lazy_pixel_ref) override; |
| |
| SkISize GetSupportedDecodeSize(const SkISize& requested_size) const override; |
| PaintImage::ContentId GetContentIdForFrame(size_t frame_index) const override; |
| const cc::ImageHeaderMetadata* GetMetadataForDecodeAcceleration() |
| const override; |
| |
| private: |
| DecodingImageGenerator(scoped_refptr<ImageFrameGenerator>, |
| const SkImageInfo&, |
| scoped_refptr<SegmentReader>, |
| WebVector<FrameMetadata>, |
| PaintImage::ContentId, |
| bool all_data_received, |
| bool can_yuv_decode, |
| const cc::ImageHeaderMetadata& image_metadata); |
| |
| scoped_refptr<ImageFrameGenerator> frame_generator_; |
| const scoped_refptr<SegmentReader> data_; // Data source. |
| const bool all_data_received_; |
| const bool can_yuv_decode_; |
| const PaintImage::ContentId complete_frame_content_id_; |
| |
| // Image metadata, such as format (e.g. Jpeg or WebP), YUV subsampling factor |
| // (e.g. 444, 422, 420, etc.), size, and format-specific information that is |
| // useful for deciding which kind of decoding can be used (i.e. hardware |
| // acceleration or normal). |
| const cc::ImageHeaderMetadata image_metadata_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DecodingImageGenerator); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_DECODING_IMAGE_GENERATOR_H__ |