/src/skia/include/codec/SkRawDecoder.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 SkRawDecoder_DEFINED |
8 | | #define SkRawDecoder_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 SkRawDecoder { |
20 | | |
21 | 33.4k | inline bool IsRaw(const void*, size_t) { |
22 | | // Raw formats are tricky to detect just by reading in the first several bytes. |
23 | | // For example, PIEX might need to read 10k bytes to detect Sony's arw format |
24 | | // https://github.com/google/piex/blob/f1e15dd837c04347504149f71db67a78fbeddc73/src/image_type_recognition/image_type_recognition_lite.cc#L152 |
25 | | // Thus, we just assume everything might be a RAW file and check it last. |
26 | 33.4k | return true; |
27 | 33.4k | } |
28 | | |
29 | | /** |
30 | | * Attempts to decode the given bytes as a raw image. |
31 | | * |
32 | | * If the bytes are not a raw, returns nullptr. |
33 | | * |
34 | | * DecodeContext is ignored |
35 | | */ |
36 | | SK_API std::unique_ptr<SkCodec> Decode(std::unique_ptr<SkStream>, |
37 | | SkCodec::Result*, |
38 | | SkCodecs::DecodeContext = nullptr); |
39 | | SK_API std::unique_ptr<SkCodec> Decode(sk_sp<SkData>, |
40 | | SkCodec::Result*, |
41 | | SkCodecs::DecodeContext = nullptr); |
42 | | |
43 | | // This decoder will always be checked last, no matter when it is registered. |
44 | 7 | inline constexpr SkCodecs::Decoder Decoder() { |
45 | 7 | return { "raw", IsRaw, Decode }; |
46 | 7 | } |
47 | | |
48 | | } // namespace SkRawDecoder |
49 | | |
50 | | #endif // SkRawDecoder_DEFINED |