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thorvg/src/renderer/tvgLoader.cpp

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/*
* Copyright (c) 2020 - 2024 the ThorVG project. 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 <string.h>
#include "tvgInlist.h"
#include "tvgLoader.h"
#include "tvgLock.h"
#ifdef THORVG_SVG_LOADER_SUPPORT
#include "tvgSvgLoader.h"
#endif
#ifdef THORVG_PNG_LOADER_SUPPORT
#include "tvgPngLoader.h"
#endif
#ifdef THORVG_JPG_LOADER_SUPPORT
#include "tvgJpgLoader.h"
#endif
#ifdef THORVG_WEBP_LOADER_SUPPORT
#include "tvgWebpLoader.h"
#endif
#ifdef THORVG_TTF_LOADER_SUPPORT
#include "tvgTtfLoader.h"
#endif
#ifdef THORVG_LOTTIE_LOADER_SUPPORT
#include "tvgLottieLoader.h"
#endif
#include "tvgRawLoader.h"
uintptr_t HASH_KEY(const char* data)
{
return reinterpret_cast<uintptr_t>(data);
}
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
ColorSpace ImageLoader::cs = ColorSpace::ARGB8888;
static Key key;
static Inlist<LoadModule> _activeLoaders;
static LoadModule* _find(FileType type)
{
switch(type) {
case FileType::Png: {
#ifdef THORVG_PNG_LOADER_SUPPORT
return new PngLoader;
#endif
break;
}
case FileType::Jpg: {
#ifdef THORVG_JPG_LOADER_SUPPORT
return new JpgLoader;
#endif
break;
}
case FileType::Webp: {
#ifdef THORVG_WEBP_LOADER_SUPPORT
return new WebpLoader;
#endif
break;
}
case FileType::Svg: {
#ifdef THORVG_SVG_LOADER_SUPPORT
return new SvgLoader;
#endif
break;
}
case FileType::Ttf: {
#ifdef THORVG_TTF_LOADER_SUPPORT
return new TtfLoader;
#endif
break;
}
case FileType::Lottie: {
#ifdef THORVG_LOTTIE_LOADER_SUPPORT
return new LottieLoader;
#endif
break;
}
case FileType::Raw: {
return new RawLoader;
break;
}
default: {
break;
}
}
#ifdef THORVG_LOG_ENABLED
const char *format;
switch(type) {
case FileType::Svg: {
format = "SVG";
break;
}
case FileType::Ttf: {
format = "TTF";
break;
}
case FileType::Lottie: {
format = "lottie(json)";
break;
}
case FileType::Raw: {
format = "RAW";
break;
}
case FileType::Png: {
format = "PNG";
break;
}
case FileType::Jpg: {
format = "JPG";
break;
}
case FileType::Webp: {
format = "WEBP";
break;
}
default: {
format = "???";
break;
}
}
TVGLOG("RENDERER", "%s format is not supported", format);
#endif
return nullptr;
}
static LoadModule* _findByPath(const string& path)
{
auto ext = path.substr(path.find_last_of(".") + 1);
if (!ext.compare("svg")) return _find(FileType::Svg);
if (!ext.compare("json")) return _find(FileType::Lottie);
if (!ext.compare("png")) return _find(FileType::Png);
if (!ext.compare("jpg")) return _find(FileType::Jpg);
if (!ext.compare("webp")) return _find(FileType::Webp);
if (!ext.compare("ttf") || !ext.compare("ttc")) return _find(FileType::Ttf);
if (!ext.compare("otf") || !ext.compare("otc")) return _find(FileType::Ttf);
return nullptr;
}
static FileType _convert(const string& mimeType)
{
auto type = FileType::Unknown;
if (mimeType == "svg" || mimeType == "svg+xml") type = FileType::Svg;
else if (mimeType == "ttf" || mimeType == "otf") type = FileType::Ttf;
else if (mimeType == "lottie") type = FileType::Lottie;
else if (mimeType == "raw") type = FileType::Raw;
else if (mimeType == "png") type = FileType::Png;
else if (mimeType == "jpg" || mimeType == "jpeg") type = FileType::Jpg;
else if (mimeType == "webp") type = FileType::Webp;
else TVGLOG("RENDERER", "Given mimetype is unknown = \"%s\".", mimeType.c_str());
return type;
}
static LoadModule* _findByType(const string& mimeType)
{
return _find(_convert(mimeType));
}
static LoadModule* _findFromCache(const string& path)
{
ScopedLock lock(key);
auto loader = _activeLoaders.head;
while (loader) {
if (loader->pathcache && !strcmp(loader->hashpath, path.c_str())) {
++loader->sharing;
return loader;
}
loader = loader->next;
}
return nullptr;
}
static LoadModule* _findFromCache(const char* data, uint32_t size, const string& mimeType)
{
auto type = _convert(mimeType);
if (type == FileType::Unknown) return nullptr;
ScopedLock lock(key);
auto loader = _activeLoaders.head;
auto key = HASH_KEY(data);
while (loader) {
if (loader->type == type && loader->hashkey == key) {
++loader->sharing;
return loader;
}
loader = loader->next;
}
return nullptr;
}
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
bool LoaderMgr::init()
{
return true;
}
bool LoaderMgr::term()
{
auto loader = _activeLoaders.head;
//clean up the remained font loaders which is globally used.
while (loader && loader->type == FileType::Ttf) {
auto ret = loader->close();
auto tmp = loader;
loader = loader->next;
_activeLoaders.remove(tmp);
if (ret) delete(tmp);
}
return true;
}
bool LoaderMgr::retrieve(LoadModule* loader)
{
if (!loader) return false;
if (loader->close()) {
if (loader->cached()) {
ScopedLock lock(key);
_activeLoaders.remove(loader);
}
delete(loader);
}
return true;
}
LoadModule* LoaderMgr::loader(const string& path, bool* invalid)
{
*invalid = false;
//TODO: lottie is not sharable.
auto allowCache = true;
auto ext = path.substr(path.find_last_of(".") + 1);
if (!ext.compare("json")) allowCache = false;
if (allowCache) {
if (auto loader = _findFromCache(path)) return loader;
}
if (auto loader = _findByPath(path)) {
if (loader->open(path)) {
if (allowCache) {
loader->hashpath = strdup(path.c_str());
loader->pathcache = true;
{
ScopedLock lock(key);
_activeLoaders.back(loader);
}
}
return loader;
}
delete(loader);
}
//Unknown MimeType. Try with the candidates in the order
for (int i = 0; i < static_cast<int>(FileType::Raw); i++) {
if (auto loader = _find(static_cast<FileType>(i))) {
if (loader->open(path)) {
if (allowCache) {
loader->hashpath = strdup(path.c_str());
loader->pathcache = true;
{
ScopedLock lock(key);
_activeLoaders.back(loader);
}
}
return loader;
}
delete(loader);
}
}
*invalid = true;
return nullptr;
}
bool LoaderMgr::retrieve(const string& path)
{
return retrieve(_findFromCache(path));
}
LoadModule* LoaderMgr::loader(const char* key)
{
auto loader = _activeLoaders.head;
while (loader) {
if (loader->pathcache && strstr(loader->hashpath, key)) {
++loader->sharing;
return loader;
}
loader = loader->next;
}
return nullptr;
}
LoadModule* LoaderMgr::loader(const char* data, uint32_t size, const string& mimeType, const string& rpath, bool copy)
{
//Note that users could use the same data pointer with the different content.
//Thus caching is only valid for shareable.
auto allowCache = !copy;
//TODO: lottie is not sharable.
if (allowCache) {
auto type = _convert(mimeType);
if (type == FileType::Lottie) allowCache = false;
}
if (allowCache) {
if (auto loader = _findFromCache(data, size, mimeType)) return loader;
}
//Try with the given MimeType
if (!mimeType.empty()) {
if (auto loader = _findByType(mimeType)) {
if (loader->open(data, size, rpath, copy)) {
if (allowCache) {
loader->hashkey = HASH_KEY(data);
ScopedLock lock(key);
_activeLoaders.back(loader);
}
return loader;
} else {
TVGLOG("LOADER", "Given mimetype \"%s\" seems incorrect or not supported.", mimeType.c_str());
delete(loader);
}
}
}
//Unknown MimeType. Try with the candidates in the order
for (int i = 0; i < static_cast<int>(FileType::Raw); i++) {
auto loader = _find(static_cast<FileType>(i));
if (loader) {
if (loader->open(data, size, rpath, copy)) {
if (allowCache) {
loader->hashkey = HASH_KEY(data);
ScopedLock lock(key);
_activeLoaders.back(loader);
}
return loader;
}
delete(loader);
}
}
return nullptr;
}
LoadModule* LoaderMgr::loader(const uint32_t *data, uint32_t w, uint32_t h, bool premultiplied, bool copy)
{
//Note that users could use the same data pointer with the different content.
//Thus caching is only valid for shareable.
if (!copy) {
//TODO: should we check premultiplied??
if (auto loader = _findFromCache((const char*)(data), w * h, "raw")) return loader;
}
//function is dedicated for raw images only
auto loader = new RawLoader;
if (loader->open(data, w, h, premultiplied, copy)) {
if (!copy) {
loader->hashkey = HASH_KEY((const char*)data);
ScopedLock lock(key);
_activeLoaders.back(loader);
}
return loader;
}
delete(loader);
return nullptr;
}
//loads fonts from memory - loader is cached (regardless of copy value) in order to access it while setting font
LoadModule* LoaderMgr::loader(const char* name, const char* data, uint32_t size, TVG_UNUSED const string& mimeType, bool copy)
{
#ifdef THORVG_TTF_LOADER_SUPPORT
//TODO: add check for mimetype ?
if (auto loader = _findFromCache(name)) return loader;
//function is dedicated for ttf loader (the only supported font loader)
auto loader = new TtfLoader;
if (loader->open(data, size, "", copy)) {
loader->hashpath = strdup(name);
loader->pathcache = true;
ScopedLock lock(key);
_activeLoaders.back(loader);
return loader;
}
TVGLOG("LOADER", "The font data \"%s\" could not be loaded.", name);
delete(loader);
#endif
return nullptr;
}
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