1 /* 2 * Copyright 2023 Google LLC 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 #ifndef SkJpegDecoder_DEFINED 8 #define SkJpegDecoder_DEFINED 9 10 #include "include/codec/SkCodec.h" 11 #include "include/core/SkRefCnt.h" 12 #include "include/private/base/SkAPI.h" 13 14 class SkData; 15 class SkStream; 16 17 #include <memory> 18 19 namespace SkJpegDecoder { 20 21 /** Returns true if this data claims to be a JPEG image. */ 22 SK_API bool IsJpeg(const void*, size_t); 23 24 /** 25 * Attempts to decode the given bytes as a JPEG. 26 * 27 * If the bytes are not a JPEG, returns nullptr. 28 * 29 * DecodeContext is ignored 30 */ 31 SK_API std::unique_ptr<SkCodec> Decode(std::unique_ptr<SkStream>, 32 SkCodec::Result*, 33 SkCodecs::DecodeContext = nullptr); 34 SK_API std::unique_ptr<SkCodec> Decode(sk_sp<SkData>, 35 SkCodec::Result*, 36 SkCodecs::DecodeContext = nullptr); 37 Decoder()38inline constexpr SkCodecs::Decoder Decoder() { 39 return { "jpeg", IsJpeg, Decode }; 40 } 41 42 } // namespace SkJpegDecoder 43 44 #endif // SkJpegDecoder_DEFINED 45