/* * Copyright 2019 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "tools/SkSharingProc.h" #include "include/core/SkData.h" #include "include/core/SkImage.h" #include "include/core/SkSerialProcs.h" sk_sp SkSharingSerialContext::serializeImage(SkImage* img, void* ctx) { SkSharingSerialContext* context = reinterpret_cast(ctx); uint32_t id = img->uniqueID(); // get this process's id for the image. these are not hashes. // find out if we have already serialized this, and if so, what its in-file id is. auto iter = context->fImageMap.find(id); if (iter == context->fImageMap.end()) { // When not present, add its id to the map and return its usual serialized form. context->fImageMap[id] = context->fImageMap.size(); return img->encodeToData(); } uint32_t fid = context->fImageMap[id]; // if present, return only the in-file id we registered the first time we serialized it. return SkData::MakeWithCopy(&fid, sizeof(fid)); } sk_sp SkSharingDeserialContext::deserializeImage( const void* data, size_t length, void* ctx) { SkSharingDeserialContext* context = reinterpret_cast(ctx); uint32_t fid; // If the data is an image fid, look up an already deserialized image from our map if (length == sizeof(fid)) { memcpy(&fid, data, sizeof(fid)); if (fid >= context->fImages.size()) { SkDebugf("We do not have the data for image %d.\n", fid); return nullptr; } return context->fImages[fid]; } // Otherwise, the data is an image, deserialise it, store it in our map at its fid. // TODO(nifong): make DeserialProcs accept sk_sp so we don't have to copy this. sk_sp dataView = SkData::MakeWithCopy(data, length); const sk_sp image = SkImage::MakeFromEncoded(std::move(dataView)); context->fImages.push_back(image); return image; }