1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkCodec.h" 9 #include "SkCodecPriv.h" 10 #include "SkWebpAdapterCodec.h" 11 12 SkWebpAdapterCodec::SkWebpAdapterCodec(SkWebpCodec* codec) 13 : INHERITED(codec) 14 {} 15 16 SkISize SkWebpAdapterCodec::onGetSampledDimensions(int sampleSize) const { 17 float scale = get_scale_from_sample_size(sampleSize); 18 return this->codec()->getScaledDimensions(scale); 19 } 20 21 bool SkWebpAdapterCodec::onGetSupportedSubset(SkIRect* desiredSubset) const { 22 return this->codec()->getValidSubset(desiredSubset); 23 } 24 25 SkCodec::Result SkWebpAdapterCodec::onGetAndroidPixels(const SkImageInfo& info, void* pixels, 26 size_t rowBytes, const AndroidOptions& options) { 27 // SkWebpCodec will support pretty much any dimensions that we provide, but we want 28 // to be stricter about the type of scaling that we allow, so we will add an extra 29 // check here. 30 SkISize supportedSize; 31 if (!options.fSubset) { 32 supportedSize = this->onGetSampledDimensions(options.fSampleSize); 33 } else { 34 supportedSize = this->getSampledSubsetDimensions(options.fSampleSize, *options.fSubset); 35 } 36 if (supportedSize != info.dimensions()) { 37 return SkCodec::kInvalidParameters; 38 } 39 40 SkCodec::Options codecOptions; 41 codecOptions.fZeroInitialized = options.fZeroInitialized; 42 codecOptions.fSubset = options.fSubset; 43 return this->codec()->getPixels(info, pixels, rowBytes, &codecOptions, options.fColorPtr, 44 options.fColorCount); 45 } 46
