/src/skia/include/codec/SkPngDecoder.h
Line | Count | Source |
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 SkPngDecoder_DEFINED |
8 | | #define SkPngDecoder_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 SkPngDecoder { |
20 | | |
21 | | /** Returns true if this data claims to be a PNG image. */ |
22 | | SK_API bool IsPng(const void*, size_t); |
23 | | |
24 | | /** |
25 | | * Attempts to decode the given bytes as a PNG. |
26 | | * |
27 | | * If the bytes are not a PNG, returns nullptr. |
28 | | * |
29 | | * DecodeContext, if non-null, is expected to be a SkPngChunkReader* |
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 | | |
38 | 7 | inline constexpr SkCodecs::Decoder Decoder() { |
39 | 7 | return { "png", IsPng, Decode }; |
40 | 7 | } |
41 | | |
42 | | } // namespace SkPngDecoder |
43 | | |
44 | | #endif // SkPngDecoder_DEFINED |