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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkImageEncoderPriv_DEFINED
#define SkImageEncoderPriv_DEFINED
#include "SkImageEncoder.h"
#include "SkTRegistry.h"
#ifndef SK_SUPPORT_LEGACY_IMAGE_ENCODER_CLASS
// TODO(halcanary): replace this class and registry system with something simpler.
class SkImageEncoder {
public:
typedef SkEncodedImageFormat Type;
static SkImageEncoder* Create(SkEncodedImageFormat);
virtual ~SkImageEncoder() {}
bool encodeStream(SkWStream* dst, const SkBitmap& src, int quality) {
return this->onEncode(dst, src, SkMin32(100, SkMax32(0, 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).
*/
virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) = 0;
};
#endif // SK_SUPPORT_LEGACY_IMAGE_ENCODER_CLASS
// This macro declares a global (i.e., non-class owned) creation entry point
// for each encoder (e.g., CreateJPEGImageEncoder)
#define DECLARE_ENCODER_CREATOR(codec) \
SK_API 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
DECLARE_ENCODER_CREATOR(JPEGImageEncoder);
DECLARE_ENCODER_CREATOR(PNGImageEncoder);
DECLARE_ENCODER_CREATOR(KTXImageEncoder);
DECLARE_ENCODER_CREATOR(WEBPImageEncoder);
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
SkImageEncoder* CreateImageEncoder_CG(SkImageEncoder::Type type);
#endif
#if defined(SK_BUILD_FOR_WIN)
SkImageEncoder* CreateImageEncoder_WIC(SkImageEncoder::Type type);
#endif
// Typedef to make registering encoder callback easier
// This has to be defined outside SkImageEncoder. :(
typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_EncodeReg;
#endif // SkImageEncoderPriv_DEFINED
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