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/*
* Copyright 2023 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPngDecoder_DEFINED
#define SkPngDecoder_DEFINED
#include "include/codec/SkCodec.h"
#include "include/core/SkRefCnt.h"
#include "include/private/base/SkAPI.h"
class SkData;
class SkStream;
#include <memory>
namespace SkPngDecoder {
/** Returns true if this data claims to be a PNG image. */
SK_API bool IsPng(const void*, size_t);
/**
* Attempts to decode the given bytes as a PNG.
*
* If the bytes are not a PNG, returns nullptr.
*
* DecodeContext, if non-null, is expected to be a SkPngChunkReader*
*/
SK_API std::unique_ptr<SkCodec> Decode(std::unique_ptr<SkStream>,
SkCodec::Result*,
SkCodecs::DecodeContext = nullptr);
SK_API std::unique_ptr<SkCodec> Decode(sk_sp<SkData>,
SkCodec::Result*,
SkCodecs::DecodeContext = nullptr);
inline constexpr SkCodecs::Decoder Decoder() {
return { "png", IsPng, Decode };
}
} // namespace SkPngDecoder
#endif // SkPngDecoder_DEFINED
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