191 lines
7.8 KiB
C++
191 lines
7.8 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osgDB/ReaderWriter>
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#include <osgDB/Registry>
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#include <osgDB/FileNameUtils>
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#include <osgDB/FileUtils>
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#include <osgDB/Archive>
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using namespace osgDB;
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osg::Object* ReaderWriter::ReadResult::getObject() { return _object.get(); }
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osg::Image* ReaderWriter::ReadResult::getImage() { return dynamic_cast<osg::Image*>(_object.get()); }
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osg::HeightField* ReaderWriter::ReadResult::getHeightField() { return dynamic_cast<osg::HeightField*>(_object.get()); }
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osg::Node* ReaderWriter::ReadResult::getNode() { return dynamic_cast<osg::Node*>(_object.get()); }
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osgDB::Archive* ReaderWriter::ReadResult::getArchive() { return dynamic_cast<osgDB::Archive*>(_object.get()); }
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osg::Shader* ReaderWriter::ReadResult::getShader() { return dynamic_cast<osg::Shader*>(_object.get()); }
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osg::Script* ReaderWriter::ReadResult::getScript() { return dynamic_cast<osg::Script*>(_object.get()); }
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osg::Object* ReaderWriter::ReadResult::takeObject() { osg::Object* obj = _object.get(); if (obj) { obj->ref(); _object=NULL; obj->unref_nodelete(); } return obj; }
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osg::Image* ReaderWriter::ReadResult::takeImage() { osg::Image* image=dynamic_cast<osg::Image*>(_object.get()); if (image) { image->ref(); _object=NULL; image->unref_nodelete(); } return image; }
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osg::HeightField* ReaderWriter::ReadResult::takeHeightField() { osg::HeightField* hf=dynamic_cast<osg::HeightField*>(_object.get()); if (hf) { hf->ref(); _object=NULL; hf->unref_nodelete(); } return hf; }
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osg::Node* ReaderWriter::ReadResult::takeNode() { osg::Node* node=dynamic_cast<osg::Node*>(_object.get()); if (node) { node->ref(); _object=NULL; node->unref_nodelete(); } return node; }
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osgDB::Archive* ReaderWriter::ReadResult::takeArchive() { osgDB::Archive* archive=dynamic_cast<osgDB::Archive*>(_object.get()); if (archive) { archive->ref(); _object=NULL; archive->unref_nodelete(); } return archive; }
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osg::Shader* ReaderWriter::ReadResult::takeShader() { osg::Shader* shader=dynamic_cast<osg::Shader*>(_object.get()); if (shader) { shader->ref(); _object=NULL; shader->unref_nodelete(); } return shader; }
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osg::Script* ReaderWriter::ReadResult::takeScript() { osg::Script* script=dynamic_cast<osg::Script*>(_object.get()); if (script) { script->ref(); _object=NULL; script->unref_nodelete(); } return script; }
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std::string ReaderWriter::ReadResult::statusMessage() const
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{
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std::string description;
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switch (_status)
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{
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case NOT_IMPLEMENTED:
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description += "not implemented";
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break;
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case FILE_NOT_HANDLED:
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description += "file not handled";
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break;
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case FILE_NOT_FOUND:
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description += "file not found";
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break;
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case ERROR_IN_READING_FILE:
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description += "read error";
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break;
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case FILE_LOADED:
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description += "file loaded";
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break;
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case FILE_LOADED_FROM_CACHE:
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description += "file loaded from cache";
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break;
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case FILE_REQUESTED:
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description += "file requested";
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break;
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case INSUFFICIENT_MEMORY_TO_LOAD:
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description += "insufficient memory to load";
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break;
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}
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if (!_message.empty())
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description += " (" + _message + ")";
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return description;
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}
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std::string ReaderWriter::WriteResult::statusMessage() const
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{
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std::string description;
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switch (_status)
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{
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case NOT_IMPLEMENTED:
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description += "not implemented";
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break;
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case FILE_NOT_HANDLED:
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description += "file not handled";
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break;
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case ERROR_IN_WRITING_FILE:
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description += "write error";
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break;
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case FILE_SAVED:
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description += "file saved";
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break;
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}
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if (!_message.empty())
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description += " (" + _message + ")";
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return description;
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}
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ReaderWriter::~ReaderWriter()
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{
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}
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bool ReaderWriter::acceptsExtension(const std::string& extension) const
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{
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// check for an exact match
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std::string lowercase_ext = convertToLowerCase(extension);
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return (_supportedExtensions.count(lowercase_ext)!=0);
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}
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bool ReaderWriter::acceptsProtocol(const std::string& protocol) const
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{
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std::string lowercase_protocol = convertToLowerCase(protocol);
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return (_supportedProtocols.count(lowercase_protocol)!=0);
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}
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void ReaderWriter::supportsProtocol(const std::string& fmt, const std::string& description)
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{
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Registry::instance()->registerProtocol(fmt);
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_supportedProtocols[convertToLowerCase(fmt)] = description;
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}
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void ReaderWriter::supportsExtension(const std::string& fmt, const std::string& description)
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{
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_supportedExtensions[convertToLowerCase(fmt)] = description;
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}
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void ReaderWriter::supportsOption(const std::string& fmt, const std::string& description)
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{
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_supportedOptions[fmt] = description;
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}
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ReaderWriter::Features ReaderWriter::supportedFeatures() const
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{
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int features = FEATURE_NONE;
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std::string dummyFilename;
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if (readObject(dummyFilename,0).status()!=ReadResult::NOT_IMPLEMENTED) features |= FEATURE_READ_OBJECT;
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if (readImage(dummyFilename,0).status()!=ReadResult::NOT_IMPLEMENTED) features |= FEATURE_READ_IMAGE;
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if (readHeightField(dummyFilename,0).status()!=ReadResult::NOT_IMPLEMENTED) features |= FEATURE_READ_HEIGHT_FIELD;
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if (readShader(dummyFilename,0).status()!=ReadResult::NOT_IMPLEMENTED) features |= FEATURE_READ_SHADER;
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if (readNode(dummyFilename,0).status()!=ReadResult::NOT_IMPLEMENTED) features |= FEATURE_READ_NODE;
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osg::ref_ptr<osg::Image> image = new osg::Image;
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osg::ref_ptr<osg::HeightField> hf = new osg::HeightField;
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osg::ref_ptr<osg::Shader> shader = new osg::Shader;
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osg::ref_ptr<osg::Node> node = new osg::Node;
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if (writeObject(*image, dummyFilename,0).status()!=WriteResult::NOT_IMPLEMENTED) features |= FEATURE_WRITE_OBJECT;
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if (writeImage(*image,dummyFilename,0).status()!=WriteResult::NOT_IMPLEMENTED) features |= FEATURE_WRITE_IMAGE;
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if (writeHeightField(*hf,dummyFilename,0).status()!=WriteResult::NOT_IMPLEMENTED) features |= FEATURE_WRITE_HEIGHT_FIELD;
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if (writeShader(*shader,dummyFilename,0).status()!=WriteResult::NOT_IMPLEMENTED) features |= FEATURE_WRITE_SHADER;
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if (writeNode(*node, dummyFilename,0).status()!=WriteResult::NOT_IMPLEMENTED) features |= FEATURE_WRITE_NODE;
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return Features(features);
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}
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ReaderWriter::FeatureList ReaderWriter::featureAsString(ReaderWriter::Features feature)
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{
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typedef struct {
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ReaderWriter::Features feature;
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const char *s;
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} FeatureStringList;
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FeatureStringList list[] = {
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{ FEATURE_READ_OBJECT, "readObject" },
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{ FEATURE_READ_IMAGE, "readImage" },
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{ FEATURE_READ_HEIGHT_FIELD, "readHeightField" },
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{ FEATURE_READ_NODE, "readNode" },
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{ FEATURE_READ_SHADER, "readShader" },
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{ FEATURE_WRITE_OBJECT, "writeObject" },
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{ FEATURE_WRITE_IMAGE, "writeImage" },
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{ FEATURE_WRITE_HEIGHT_FIELD, "writeHeightField" },
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{ FEATURE_WRITE_NODE, "writeNode" },
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{ FEATURE_WRITE_SHADER, "writeShader" },
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{ FEATURE_NONE,0 }
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};
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FeatureList result;
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for(FeatureStringList *p=list; p->feature != 0; p++)
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{
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if ((feature & p->feature) != 0)
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result.push_back(p->s);
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}
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return result;
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}
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bool ReaderWriter::fileExists(const std::string& filename, const Options* /*options*/) const
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{
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return ::osgDB::fileExists(filename);
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}
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