gfx/skia/trunk/include/core/SkImageEncoder.h@129ffea94266
gfx/skia/trunk/include/core/SkImageEncoder.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #ifndef SkImageEncoder_DEFINED
9 #define SkImageEncoder_DEFINED
11 #include "SkTypes.h"
12 #include "SkTRegistry.h"
14 class SkBitmap;
15 class SkData;
16 class SkWStream;
18 class SkImageEncoder {
19 public:
20 enum Type {
21 kUnknown_Type,
22 kBMP_Type,
23 kGIF_Type,
24 kICO_Type,
25 kJPEG_Type,
26 kPNG_Type,
27 kWBMP_Type,
28 kWEBP_Type,
29 };
30 static SkImageEncoder* Create(Type);
32 virtual ~SkImageEncoder();
34 /* Quality ranges from 0..100 */
35 enum {
36 kDefaultQuality = 80
37 };
39 /**
40 * Encode bitmap 'bm', returning the results in an SkData, at quality level
41 * 'quality' (which can be in range 0-100). If the bitmap cannot be
42 * encoded, return null. On success, the caller is responsible for
43 * calling unref() on the data when they are finished.
44 */
45 SkData* encodeData(const SkBitmap&, int quality);
47 /**
48 * Encode bitmap 'bm' in the desired format, writing results to
49 * file 'file', at quality level 'quality' (which can be in range
50 * 0-100). Returns false on failure.
51 */
52 bool encodeFile(const char file[], const SkBitmap& bm, int quality);
54 /**
55 * Encode bitmap 'bm' in the desired format, writing results to
56 * stream 'stream', at quality level 'quality' (which can be in
57 * range 0-100). Returns false on failure.
58 */
59 bool encodeStream(SkWStream* stream, const SkBitmap& bm, int quality);
61 static SkData* EncodeData(const SkBitmap&, Type, int quality);
62 static bool EncodeFile(const char file[], const SkBitmap&, Type,
63 int quality);
64 static bool EncodeStream(SkWStream*, const SkBitmap&, Type,
65 int quality);
67 protected:
68 /**
69 * Encode bitmap 'bm' in the desired format, writing results to
70 * stream 'stream', at quality level 'quality' (which can be in
71 * range 0-100).
72 *
73 * This must be overridden by each SkImageEncoder implementation.
74 */
75 virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) = 0;
76 };
78 // This macro declares a global (i.e., non-class owned) creation entry point
79 // for each encoder (e.g., CreateJPEGImageEncoder)
80 #define DECLARE_ENCODER_CREATOR(codec) \
81 SkImageEncoder *Create ## codec ();
83 // This macro defines the global creation entry point for each encoder. Each
84 // encoder implementation that registers with the encoder factory must call it.
85 #define DEFINE_ENCODER_CREATOR(codec) \
86 SkImageEncoder *Create ## codec () { \
87 return SkNEW( Sk ## codec ); \
88 }
90 // All the encoders known by Skia. Note that, depending on the compiler settings,
91 // not all of these will be available
92 /** An ARGBImageEncoder will always write out
93 * bitmap.width() * bitmap.height() * 4
94 * bytes.
95 */
96 DECLARE_ENCODER_CREATOR(ARGBImageEncoder);
97 DECLARE_ENCODER_CREATOR(JPEGImageEncoder);
98 DECLARE_ENCODER_CREATOR(PNGImageEncoder);
99 DECLARE_ENCODER_CREATOR(WEBPImageEncoder);
101 // Typedef to make registering encoder callback easier
102 // This has to be defined outside SkImageEncoder. :(
103 typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_EncodeReg;
104 #endif
