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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkPixelSerializer_DEFINED | 8 #ifndef SkPixelSerializer_DEFINED |
9 #define SkPixelSerializer_DEFINED | 9 #define SkPixelSerializer_DEFINED |
10 | 10 |
11 #include "SkRefCnt.h" | 11 #include "SkRefCnt.h" |
| 12 #include "SkPixmap.h" |
12 | 13 |
13 class SkData; | 14 class SkData; |
14 struct SkImageInfo; | |
15 | 15 |
16 /** | 16 /** |
17 * Interface for serializing pixels, e.g. SkBitmaps in an SkPicture. | 17 * Interface for serializing pixels, e.g. SkBitmaps in an SkPicture. |
18 */ | 18 */ |
19 class SkPixelSerializer : public SkRefCnt { | 19 class SkPixelSerializer : public SkRefCnt { |
20 public: | 20 public: |
21 virtual ~SkPixelSerializer() {} | 21 virtual ~SkPixelSerializer() {} |
22 | 22 |
23 /** | 23 /** |
24 * Call to determine if the client wants to serialize the encoded data. If | 24 * Call to determine if the client wants to serialize the encoded data. If |
25 * false, serialize another version (e.g. the result of encodePixels). | 25 * false, serialize another version (e.g. the result of encodePixels). |
26 */ | 26 */ |
27 bool useEncodedData(const void* data, size_t len) { | 27 bool useEncodedData(const void* data, size_t len) { |
28 return this->onUseEncodedData(data, len); | 28 return this->onUseEncodedData(data, len); |
29 } | 29 } |
30 | 30 |
31 /** | 31 /** |
32 * Call to get the client's version of encoding these pixels. If it | 32 * Call to get the client's version of encoding these pixels. If it |
33 * returns NULL, serialize the raw pixels. | 33 * returns NULL, serialize the raw pixels. |
34 */ | 34 */ |
35 SkData* encodePixels(const SkImageInfo& info, const void* pixels, size_t row
Bytes) { | 35 SkData* encode(const SkPixmap& pixmap) { |
36 return this->onEncodePixels(info, pixels, rowBytes); | 36 SkData* data = this->onEncode(pixmap); |
| 37 return data ? data : this->onEncodePixels( |
| 38 pixmap.info(), pixmap.addr(), pixmap.rowBytes()); |
37 } | 39 } |
38 | 40 |
39 protected: | 41 protected: |
40 /** | 42 /** |
41 * Return true if you want to serialize the encoded data, false if you want | 43 * Return true if you want to serialize the encoded data, false if you want |
42 * another version serialized (e.g. the result of encodePixels). | 44 * another version serialized (e.g. the result of encodePixels). |
43 */ | 45 */ |
44 virtual bool onUseEncodedData(const void* data, size_t len) = 0; | 46 virtual bool onUseEncodedData(const void* data, size_t len) = 0; |
45 | 47 |
46 /** | 48 /** |
47 * If you want to encode these pixels, return the encoded data as an SkData | 49 * If you want to encode these pixels, return the encoded data as an SkData |
48 * Return null if you want to serialize the raw pixels. | 50 * Return null if you want to serialize the raw pixels. |
49 */ | 51 */ |
50 virtual SkData* onEncodePixels(const SkImageInfo&, const void* pixels, size_
t rowBytes) = 0; | 52 // NOTE: onEncodePixels() is deprecated and removed in a later CL. |
| 53 // Subclasses should implement onEncode() instead. Subclasses |
| 54 // should implement at least one of onEncodePixels() or |
| 55 // onUseEncodedData(). |
| 56 virtual SkData* onEncodePixels(const SkImageInfo&, |
| 57 const void* /*pixels*/, |
| 58 size_t /*rowBytes*/) { |
| 59 return nullptr; |
| 60 } |
| 61 virtual SkData* onEncode(const SkPixmap&) { return nullptr; } |
51 }; | 62 }; |
52 #endif // SkPixelSerializer_DEFINED | 63 #endif // SkPixelSerializer_DEFINED |
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