1 /*
2  * Copyright 2016 Google Inc.
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 
8 #include "SkTypes.h"
9 #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
10 
11 #include "SkCGUtils.h"
12 #include "SkData.h"
13 #include "SkEncodedOrigin.h"
14 #include "SkImageGenerator.h"
15 #include "SkTemplates.h"
16 
17 class SkImageGeneratorCG : public SkImageGenerator {
18 public:
19 #ifdef SK_LEGACY_NEW_FROM_ENCODED_CG
20     /*
21      * Refs the data if an image generator can be returned.  Otherwise does
22      * not affect the data.
23      */
24     static SkImageGenerator* NewFromEncodedCG(SkData* data);
25 #endif
26 
27     static std::unique_ptr<SkImageGenerator> MakeFromEncodedCG(sk_sp<SkData>);
28 
29 protected:
30     SkData* onRefEncodedData() override;
31 
32     bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, const Options&)
33     override;
34 
35 private:
36     /*
37      * Takes ownership of the imageSrc
38      */
39     SkImageGeneratorCG(const SkImageInfo& info, const void* imageSrc, sk_sp<SkData> data,
40                        SkEncodedOrigin origin);
41 
42     SkAutoTCallVProc<const void, CFRelease> fImageSrc;
43     sk_sp<SkData>                           fData;
44     const SkEncodedOrigin                   fOrigin;
45 
46     typedef SkImageGenerator INHERITED;
47 };
48 
49 #endif //defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
50