video_reader.h

#pragma once
 
#include <cgv/base/base.h>
#include <cgv/data/data_view.h>
 
#include "lib_begin.h"
 
namespace cgv {
    namespace media {
        namespace video {
 
class CGV_API video_reader;
 
class CGV_API abst_video_reader : public cgv::base::base
{
public:
    friend class video_reader;
    virtual abst_video_reader* clone() const = 0;
    virtual const std::string& get_last_error() const = 0;
    virtual const char* get_supported_extensions() const = 0;
    virtual bool open(const std::string& file_name, cgv::data::data_format& df, float& fps) = 0;
    virtual bool read_frame(const cgv::data::data_view& dv) = 0;
    virtual bool close() = 0;
 
};
 
class CGV_API video_reader : public cgv::base::base
{
protected:
    cgv::data::data_format* image_format_ptr;
    abst_video_reader* rd;
    float fps;
    std::string last_error;
    bool set_void(const std::string& property, const std::string& type, const void* value);
    bool get_void(const std::string& property, const std::string& type, void* value);
public:
    video_reader(cgv::data::data_format& image_format);
    ~video_reader();
    std::string get_type_name() const;
    static const std::string& get_supported_extensions(char sep = ';');
    static std::string construct_filter_string();
    std::string get_property_declarations();
    const std::string& get_last_error() const;
    bool open(const std::string& file_name);
    const cgv::data::data_format& get_image_format() const;
    float get_fps() const;
    bool read_frame(cgv::data::data_view& dv);
    bool read_frame(const cgv::data::data_view& dv);
    bool close();
};
 
        }
    }
}
 
#include <cgv/config/lib_end.h>