147 lines
4.4 KiB
C++
147 lines
4.4 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file loader.h
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* @author mike
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* @date 1997-01-09
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*/
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#ifndef LOADER_H
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#define LOADER_H
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#include "pandabase.h"
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#include "namable.h"
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#include "loaderOptions.h"
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#include "pnotify.h"
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#include "pandaNode.h"
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#include "filename.h"
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#include "dSearchPath.h"
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#include "pvector.h"
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#include "asyncTaskManager.h"
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#include "asyncTask.h"
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class LoaderFileType;
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/**
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* A convenient class for loading models from disk, in bam or egg format (or
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* any of a number of other formats implemented by a LoaderFileType, such as
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* ptloader).
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*
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* This class supports synchronous as well as asynchronous loading. In
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* asynchronous loading, the model is loaded in the background by a thread,
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* and an event will be generated when the model is available. If threading
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* is not available, the asynchronous loading interface may be used, but it
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* loads synchronously.
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*/
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class EXPCL_PANDA_PGRAPH Loader : public TypedReferenceCount, public Namable {
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private:
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class ConsiderFile {
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public:
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Filename _path;
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LoaderFileType *_type;
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};
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PUBLISHED:
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class EXPCL_PANDA_PGRAPH Results {
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PUBLISHED:
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INLINE Results();
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INLINE Results(const Results ©);
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INLINE void operator = (const Results ©);
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INLINE ~Results();
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INLINE void clear();
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INLINE int get_num_files() const;
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INLINE const Filename &get_file(int n) const;
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MAKE_SEQ(get_files, get_num_files, get_file);
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INLINE LoaderFileType *get_file_type(int n) const;
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MAKE_SEQ(get_file_types, get_num_files, get_file_type);
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public:
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INLINE void add_file(const Filename &file, LoaderFileType *type);
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private:
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typedef pvector<ConsiderFile> Files;
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Files _files;
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};
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explicit Loader(const std::string &name = "loader");
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INLINE void set_task_manager(AsyncTaskManager *task_manager);
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INLINE AsyncTaskManager *get_task_manager() const;
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INLINE void set_task_chain(const std::string &task_chain);
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INLINE const std::string &get_task_chain() const;
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BLOCKING INLINE void stop_threads();
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INLINE bool remove(AsyncTask *task);
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BLOCKING INLINE PT(PandaNode) load_sync(const Filename &filename,
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const LoaderOptions &options = LoaderOptions()) const;
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PT(AsyncTask) make_async_request(const Filename &filename,
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const LoaderOptions &options = LoaderOptions());
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INLINE void load_async(AsyncTask *request);
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INLINE bool save_sync(const Filename &filename, const LoaderOptions &options,
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PandaNode *node) const;
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PT(AsyncTask) make_async_save_request(const Filename &filename,
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const LoaderOptions &options,
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PandaNode *node);
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INLINE void save_async(AsyncTask *request);
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BLOCKING PT(PandaNode) load_bam_stream(std::istream &in);
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virtual void output(std::ostream &out) const;
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INLINE static Loader *get_global_ptr();
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private:
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PT(PandaNode) load_file(const Filename &filename, const LoaderOptions &options) const;
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PT(PandaNode) try_load_file(const Filename &pathname, const LoaderOptions &options,
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LoaderFileType *requested_type) const;
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bool save_file(const Filename &filename, const LoaderOptions &options,
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PandaNode *node) const;
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bool try_save_file(const Filename &filename, const LoaderOptions &options,
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PandaNode *node, LoaderFileType *requested_type) const;
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static void make_global_ptr();
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PT(AsyncTaskManager) _task_manager;
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std::string _task_chain;
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static void load_file_types();
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static bool _file_types_loaded;
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static PT(Loader) _global_ptr;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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TypedReferenceCount::init_type();
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Namable::init_type();
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register_type(_type_handle, "Loader",
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TypedReferenceCount::get_class_type(),
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Namable::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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friend class ModelLoadRequest;
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};
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#include "loader.I"
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#endif
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