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/*
* 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 <vector>
#include "base/memory/scoped_refptr.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>,
std::vector<FrameMetadata>,
PaintImage::ContentId,
bool all_data_received,
bool can_yuv_decode,
const cc::ImageHeaderMetadata& image_metadata);
DecodingImageGenerator(const DecodingImageGenerator&) = delete;
DecodingImageGenerator& operator=(const DecodingImageGenerator&) = delete;
~DecodingImageGenerator() override;
// PaintImageGenerator implementation.
sk_sp<SkData> GetEncodedData() const override;
bool GetPixels(SkPixmap,
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,
PaintImage::GeneratorClientId client_id) 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>,
std::vector<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_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_DECODING_IMAGE_GENERATOR_H_
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