/*
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* Copyright 2017 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 SkPngPriv_DEFINED
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#define SkPngPriv_DEFINED
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#include "SkTypes.h"
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// We store kAlpha_8 images as GrayAlpha in png. Our private signal is significant bits for gray.
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// If that is set to 1, we assume the gray channel can be ignored, and we output just alpha.
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// We tried 0 at first, but png doesn't like a 0 sigbit for a channel it expects, hence we chose 1.
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static constexpr int kGraySigBit_GrayAlphaIsJustAlpha = 1;
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#endif
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