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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCodec.h"
#include "SkImageInfo.h"
#include "SkStream.h"
#include "SkTypes.h"
/*
* This class implements the decoding for bmp images
*/
class SkIcoCodec : public SkCodec {
public:
/*
* Checks the start of the stream to see if the image is a Ico or Cur
*/
static bool IsIco(SkStream*);
/*
* Assumes IsIco was called and returned true
* Creates an Ico decoder
* Reads enough of the stream to determine the image format
*/
static SkCodec* NewFromStream(SkStream*);
protected:
/*
* Chooses the best dimensions given the desired scale
*/
SkISize onGetScaledDimensions(float desiredScale) const override;
/*
* Initiates the Ico decode
*/
Result onGetPixels(const SkImageInfo& dstInfo, void* dst,
size_t dstRowBytes, const Options&, SkPMColor*, int*)
override;
SkEncodedFormat onGetEncodedFormat() const override {
return kICO_SkEncodedFormat;
}
private:
/*
* Constructor called by NewFromStream
* @param embeddedCodecs codecs for the embedded images, takes ownership
*/
SkIcoCodec(const SkImageInfo& srcInfo,
SkTArray<SkAutoTDelete<SkCodec>, true>* embeddedCodecs);
SkAutoTDelete<SkTArray<SkAutoTDelete<SkCodec>, true>>
fEmbeddedCodecs; // owned
typedef SkCodec INHERITED;
};
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