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