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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.
*/
#ifndef SkCodec_wbmp_DEFINED
#define SkCodec_wbmp_DEFINED
#include "SkCodec.h"
#include "SkScanlineDecoder.h"
#include "SkSwizzler.h"
class SkWbmpCodec final : public SkCodec {
public:
static bool IsWbmp(SkStream*);
/*
* Assumes IsWbmp was called and returned true
* Creates a wbmp codec
* Takes ownership of the stream
*/
static SkCodec* NewFromStream(SkStream*);
/*
* Assumes IsWbmp was called and returned true
* Creates a wbmp scanline decoder
* Takes ownership of the stream
*/
static SkScanlineDecoder* NewSDFromStream(SkStream*);
protected:
SkEncodedFormat onGetEncodedFormat() const override;
Result onGetPixels(const SkImageInfo&, void*, size_t,
const Options&, SkPMColor[], int*) override;
bool onRewind() override;
private:
/*
* Returns a swizzler on success, NULL on failure
*/
SkSwizzler* initializeSwizzler(const SkImageInfo& info, const SkPMColor* ctable,
const Options& opts);
/*
* Read a src row from the encoded stream
*/
Result readRow(uint8_t* row);
SkWbmpCodec(const SkImageInfo&, SkStream*);
const size_t fSrcRowBytes;
friend class SkWbmpScanlineDecoder;
typedef SkCodec INHERITED;
};
#endif // SkCodec_wbmp_DEFINED
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