51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/*
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* Copyright 2023 Google LLC
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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 SkRawDecoder_DEFINED
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#define SkRawDecoder_DEFINED
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#include "include/codec/SkCodec.h"
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#include "include/core/SkRefCnt.h"
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#include "include/private/base/SkAPI.h"
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class SkData;
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class SkStream;
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#include <memory>
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namespace SkRawDecoder {
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inline bool IsRaw(const void*, size_t) {
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// Raw formats are tricky to detect just by reading in the first several bytes.
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// For example, PIEX might need to read 10k bytes to detect Sony's arw format
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// https://github.com/google/piex/blob/f1e15dd837c04347504149f71db67a78fbeddc73/src/image_type_recognition/image_type_recognition_lite.cc#L152
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// Thus, we just assume everything might be a RAW file and check it last.
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return true;
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}
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/**
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* Attempts to decode the given bytes as a raw image.
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*
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* If the bytes are not a raw, returns nullptr.
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*
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* DecodeContext is ignored
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*/
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SK_API std::unique_ptr<SkCodec> Decode(std::unique_ptr<SkStream>,
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SkCodec::Result*,
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SkCodecs::DecodeContext = nullptr);
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SK_API std::unique_ptr<SkCodec> Decode(sk_sp<const SkData>,
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SkCodec::Result*,
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SkCodecs::DecodeContext = nullptr);
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// This decoder will always be checked last, no matter when it is registered.
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inline constexpr SkCodecs::Decoder Decoder() {
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return { "raw", IsRaw, Decode };
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}
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} // namespace SkRawDecoder
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#endif // SkRawDecoder_DEFINED
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