skia2/include/core/SkImageEncoder.h

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Automatic update of all copyright notices to reflect new license terms. I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkImageEncoder_DEFINED
#define SkImageEncoder_DEFINED
#include "SkImageInfo.h"
#include "SkTRegistry.h"
class SkBitmap;
class SkData;
class SkWStream;
class SkImageEncoder {
public:
// TODO (scroggo): Merge with SkEncodedFormat.
enum Type {
kUnknown_Type,
kBMP_Type,
kGIF_Type,
kICO_Type,
kJPEG_Type,
kPNG_Type,
kWBMP_Type,
kWEBP_Type,
kKTX_Type,
};
static SkImageEncoder* Create(Type);
virtual ~SkImageEncoder();
/* Quality ranges from 0..100 */
enum {
kDefaultQuality = 80
};
/**
* Encode bitmap 'bm', returning the results in an SkData, at quality level
* 'quality' (which can be in range 0-100). If the bitmap cannot be
* encoded, return null. On success, the caller is responsible for
* calling unref() on the data when they are finished.
*/
SkData* encodeData(const SkBitmap&, int quality);
/**
* Encode bitmap 'bm' in the desired format, writing results to
* file 'file', at quality level 'quality' (which can be in range
* 0-100). Returns false on failure.
*/
bool encodeFile(const char file[], const SkBitmap& bm, int quality);
/**
* Encode bitmap 'bm' in the desired format, writing results to
* stream 'stream', at quality level 'quality' (which can be in
* range 0-100). Returns false on failure.
*/
bool encodeStream(SkWStream* stream, const SkBitmap& bm, int quality);
static SkData* EncodeData(const SkImageInfo&, const void* pixels, size_t rowBytes,
Type, int quality);
static SkData* EncodeData(const SkBitmap&, Type, int quality);
static bool EncodeFile(const char file[], const SkBitmap&, Type,
int quality);
static bool EncodeStream(SkWStream*, const SkBitmap&, Type,
int quality);
protected:
/**
* Encode bitmap 'bm' in the desired format, writing results to
* stream 'stream', at quality level 'quality' (which can be in
* range 0-100).
*
* This must be overridden by each SkImageEncoder implementation.
*/
virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) = 0;
};
// This macro declares a global (i.e., non-class owned) creation entry point
// for each encoder (e.g., CreateJPEGImageEncoder)
#define DECLARE_ENCODER_CREATOR(codec) \
SkImageEncoder *Create ## codec ();
// This macro defines the global creation entry point for each encoder. Each
// encoder implementation that registers with the encoder factory must call it.
#define DEFINE_ENCODER_CREATOR(codec) \
SkImageEncoder* Create##codec() { return new Sk##codec; }
// All the encoders known by Skia. Note that, depending on the compiler settings,
// not all of these will be available
/** An ARGBImageEncoder will always write out
* bitmap.width() * bitmap.height() * 4
* bytes.
*/
DECLARE_ENCODER_CREATOR(ARGBImageEncoder);
DECLARE_ENCODER_CREATOR(JPEGImageEncoder);
DECLARE_ENCODER_CREATOR(PNGImageEncoder);
DECLARE_ENCODER_CREATOR(KTXImageEncoder);
DECLARE_ENCODER_CREATOR(WEBPImageEncoder);
#ifdef SK_BUILD_FOR_IOS
DECLARE_ENCODER_CREATOR(PNGImageEncoder_IOS);
#endif
// Typedef to make registering encoder callback easier
// This has to be defined outside SkImageEncoder. :(
typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_EncodeReg;
#endif