skia2/samplecode/DecodeFile.h

39 lines
1.2 KiB
C

/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmap.h"
#include "SkCodec.h"
#include "SkData.h"
#include "SkImage.h"
static inline bool decode_file(const char* filename, SkBitmap* bitmap,
SkColorType colorType = kN32_SkColorType,
bool requireUnpremul = false) {
SkASSERT(kIndex_8_SkColorType != colorType);
sk_sp<SkData> data(SkData::MakeFromFileName(filename));
SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(data.get()));
if (!codec) {
return false;
}
SkImageInfo info = codec->getInfo().makeColorType(colorType);
if (requireUnpremul && kPremul_SkAlphaType == info.alphaType()) {
info = info.makeAlphaType(kUnpremul_SkAlphaType);
}
if (!bitmap->tryAllocPixels(info)) {
return false;
}
return SkCodec::kSuccess == codec->getPixels(info, bitmap->getPixels(), bitmap->rowBytes());
}
static inline sk_sp<SkImage> decode_file(const char filename[]) {
sk_sp<SkData> data(SkData::MakeFromFileName(filename));
return data ? SkImage::MakeFromEncoded(data) : nullptr;
}