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/*
* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <cstring>
#include <fstream>
#include <sstream>
#include "lottie_lottiemodel.h"
using namespace rlottie::internal;
#ifdef LOTTIE_CACHE_SUPPORT
#include <mutex>
#include <unordered_map>
class ModelCache {
public:
static ModelCache &instance()
{
static ModelCache singleton;
return singleton;
}
std::shared_ptr<model::Composition> find(const std::string &key)
{
std::lock_guard<std::mutex> guard(mMutex);
if (!mcacheSize) return nullptr;
auto search = mHash.find(key);
return (search != mHash.end()) ? search->second : nullptr;
}
void add(const std::string &key, std::shared_ptr<model::Composition> value)
{
std::lock_guard<std::mutex> guard(mMutex);
if (!mcacheSize) return;
//@TODO just remove the 1st element
// not the best of LRU logic
if (mcacheSize == mHash.size()) mHash.erase(mHash.cbegin());
mHash[key] = std::move(value);
}
void configureCacheSize(size_t cacheSize)
{
std::lock_guard<std::mutex> guard(mMutex);
mcacheSize = cacheSize;
if (!mcacheSize) mHash.clear();
}
private:
ModelCache() = default;
std::unordered_map<std::string, std::shared_ptr<model::Composition>> mHash;
std::mutex mMutex;
size_t mcacheSize{10};
};
#else
class ModelCache {
public:
static ModelCache &instance()
{
static ModelCache singleton;
return singleton;
}
std::shared_ptr<model::Composition> find(const std::string &)
{
return nullptr;
}
void add(const std::string &, std::shared_ptr<model::Composition>) {}
void configureCacheSize(size_t) {}
};
#endif
static std::string dirname(const std::string &path)
{
const char *ptr = strrchr(path.c_str(), '/');
#ifdef _WIN32
if (ptr) ptr = strrchr(ptr + 1, '\\');
#endif
int len = int(ptr + 1 - path.c_str()); // +1 to include '/'
return std::string(path, 0, len);
}
void model::configureModelCacheSize(size_t cacheSize)
{
ModelCache::instance().configureCacheSize(cacheSize);
}
std::shared_ptr<model::Composition> model::loadFromFile(const std::string &path,
bool cachePolicy)
{
if (cachePolicy) {
auto obj = ModelCache::instance().find(path);
if (obj) return obj;
}
std::ifstream f;
f.open(path);
if (!f.is_open()) {
vCritical << "failed to open file = " << path.c_str();
return {};
} else {
std::string content;
std::getline(f, content, '\0');
f.close();
if (content.empty()) return {};
auto obj = internal::model::parse(const_cast<char *>(content.c_str()),
dirname(path));
if (obj && cachePolicy) ModelCache::instance().add(path, obj);
return obj;
}
}
std::shared_ptr<model::Composition> model::loadFromData(
std::string jsonData, const std::string &key, std::string resourcePath,
bool cachePolicy)
{
if (cachePolicy) {
auto obj = ModelCache::instance().find(key);
if (obj) return obj;
}
auto obj = internal::model::parse(const_cast<char *>(jsonData.c_str()),
std::move(resourcePath));
if (obj && cachePolicy) ModelCache::instance().add(key, obj);
return obj;
}
std::shared_ptr<model::Composition> model::loadFromData(
std::string jsonData, std::string resourcePath, model::ColorFilter filter)
{
return internal::model::parse(const_cast<char *>(jsonData.c_str()),
std::move(resourcePath), std::move(filter));
}
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