blob: 939a4d8adf4c7761a8f02f1ca03d5997ad6ababc [file] [log] [blame]
* 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 "SkBmpCodec.h"
#include "SkImageInfo.h"
#include "SkMaskSwizzler.h"
#include "SkTypes.h"
* This class implements the decoding for bmp images using bit masks
class SkBmpMaskCodec : public SkBmpCodec {
* Creates an instance of the decoder
* Called only by SkBmpCodec::NewFromStream
* There should be no other callers despite this being public
* @param info contains properties of the encoded data
* @param stream the stream of encoded image data
* @param bitsPerPixel the number of bits used to store each pixel
* @param masks color masks for certain bmp formats
* @param rowOrder indicates whether rows are ordered top-down or bottom-up
SkBmpMaskCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
uint16_t bitsPerPixel, SkMasks* masks,
SkCodec::SkScanlineOrder rowOrder);
Result onGetPixels(const SkImageInfo& dstInfo, void* dst,
size_t dstRowBytes, const Options&, SkPMColor*,
int*, int*) override;
SkCodec::Result onPrepareToDecode(const SkImageInfo& dstInfo,
const SkCodec::Options& options, SkPMColor inputColorPtr[],
int* inputColorCount) override;
SkSampler* getSampler(bool createIfNecessary) override {
return fMaskSwizzler.get();
int decodeRows(const SkImageInfo& dstInfo, void* dst, size_t dstRowBytes,
const Options& opts) override;
std::unique_ptr<SkMasks> fMasks;
std::unique_ptr<SkMaskSwizzler> fMaskSwizzler;
std::unique_ptr<uint8_t[]> fSrcBuffer;
typedef SkBmpCodec INHERITED;