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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 "SkCodecImageGenerator.h"
#include "SkMakeUnique.h"
#include "SkPixmapPriv.h"
std::unique_ptr<SkImageGenerator> SkCodecImageGenerator::MakeFromEncodedCodec(sk_sp<SkData> data) {
auto codec = SkCodec::MakeFromData(data);
if (nullptr == codec) {
return nullptr;
}
return std::unique_ptr<SkImageGenerator>(new SkCodecImageGenerator(std::move(codec), data));
}
static SkImageInfo adjust_info(SkCodec* codec) {
SkImageInfo info = codec->getInfo();
if (kUnpremul_SkAlphaType == info.alphaType()) {
info = info.makeAlphaType(kPremul_SkAlphaType);
}
if (SkPixmapPriv::ShouldSwapWidthHeight(codec->getOrigin())) {
info = SkPixmapPriv::SwapWidthHeight(info);
}
return info;
}
SkCodecImageGenerator::SkCodecImageGenerator(std::unique_ptr<SkCodec> codec, sk_sp<SkData> data)
: INHERITED(adjust_info(codec.get()))
, fCodec(std::move(codec))
, fData(std::move(data))
{}
sk_sp<SkData> SkCodecImageGenerator::onRefEncodedData() {
return fData;
}
bool SkCodecImageGenerator::onGetPixels(const SkImageInfo& requestInfo, void* requestPixels,
size_t requestRowBytes, const Options&) {
SkPixmap dst(requestInfo, requestPixels, requestRowBytes);
auto decode = [this](const SkPixmap& pm) {
SkCodec::Options codecOpts;
codecOpts.fPremulBehavior = SkTransferFunctionBehavior::kIgnore;
SkCodec::Result result = fCodec->getPixels(pm, &codecOpts);
switch (result) {
case SkCodec::kSuccess:
case SkCodec::kIncompleteInput:
case SkCodec::kErrorInInput:
return true;
default:
return false;
}
};
return SkPixmapPriv::Orient(dst, fCodec->getOrigin(), decode);
}
bool SkCodecImageGenerator::onQueryYUV8(SkYUVSizeInfo* sizeInfo, SkYUVColorSpace* colorSpace) const
{
return fCodec->queryYUV8(sizeInfo, colorSpace);
}
bool SkCodecImageGenerator::onGetYUV8Planes(const SkYUVSizeInfo& sizeInfo, void* planes[3]) {
SkCodec::Result result = fCodec->getYUV8Planes(sizeInfo, planes);
switch (result) {
case SkCodec::kSuccess:
case SkCodec::kIncompleteInput:
case SkCodec::kErrorInInput:
return true;
default:
return false;
}
}
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