c0bd9f9fe5
Current strategy: everything from the top
Things to look at first are the manual changes:
- added tools/rewrite_includes.py
- removed -Idirectives from BUILD.gn
- various compile.sh simplifications
- tweak tools/embed_resources.py
- update gn/find_headers.py to write paths from the top
- update gn/gn_to_bp.py SkUserConfig.h layout
so that #include "include/config/SkUserConfig.h" always
gets the header we want.
No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
93 lines
3.4 KiB
C++
93 lines
3.4 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkBitmapRegionDecoder_DEFINED
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#define SkBitmapRegionDecoder_DEFINED
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#include "include/android/SkBRDAllocator.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkEncodedImageFormat.h"
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#include "include/core/SkStream.h"
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/*
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* This class aims to provide an interface to test multiple implementations of
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* SkBitmapRegionDecoder.
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*/
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class SK_API SkBitmapRegionDecoder {
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public:
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enum Strategy {
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kAndroidCodec_Strategy, // Uses SkAndroidCodec for scaling and subsetting
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};
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/*
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* @param data Refs the data while this object exists, unrefs on destruction
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* @param strategy Strategy used for scaling and subsetting
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* @return Tries to create an SkBitmapRegionDecoder, returns NULL on failure
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*/
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static SkBitmapRegionDecoder* Create(sk_sp<SkData>, Strategy strategy);
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/*
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* @param stream Takes ownership of the stream
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* @param strategy Strategy used for scaling and subsetting
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* @return Tries to create an SkBitmapRegionDecoder, returns NULL on failure
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*/
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static SkBitmapRegionDecoder* Create(
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SkStreamRewindable* stream, Strategy strategy);
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/*
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* Decode a scaled region of the encoded image stream
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*
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* @param bitmap Container for decoded pixels. It is assumed that the pixels
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* are initially unallocated and will be allocated by this function.
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* @param allocator Allocator for the pixels. If this is NULL, the default
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* allocator (HeapAllocator) will be used.
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* @param desiredSubset Subset of the original image to decode.
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* @param sampleSize An integer downscaling factor for the decode.
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* @param colorType Preferred output colorType.
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* New implementations should return NULL if they do not support
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* decoding to this color type.
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* The old kOriginal_Strategy will decode to a default color type
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* if this color type is unsupported.
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* @param requireUnpremul If the image is not opaque, we will use this to determine the
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* alpha type to use.
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* @param prefColorSpace If non-null and supported, this is the color space that we will
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* decode into. Otherwise, we will choose a default.
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*
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*/
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virtual bool decodeRegion(SkBitmap* bitmap, SkBRDAllocator* allocator,
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const SkIRect& desiredSubset, int sampleSize,
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SkColorType colorType, bool requireUnpremul,
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sk_sp<SkColorSpace> prefColorSpace = nullptr) = 0;
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virtual SkEncodedImageFormat getEncodedFormat() = 0;
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virtual SkColorType computeOutputColorType(SkColorType requestedColorType) = 0;
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virtual sk_sp<SkColorSpace> computeOutputColorSpace(SkColorType outputColorType,
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sk_sp<SkColorSpace> prefColorSpace = nullptr) = 0;
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int width() const { return fWidth; }
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int height() const { return fHeight; }
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virtual ~SkBitmapRegionDecoder() {}
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protected:
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SkBitmapRegionDecoder(int width, int height)
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: fWidth(width)
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, fHeight(height)
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{}
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private:
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const int fWidth;
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const int fHeight;
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};
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#endif
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