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#ifndef VID_HPP
#define VID_HPP
#pragma warning (disable:4786)
#include <windows.h>
#include <cstdlib>
#include <string>
#include <map>
#include <exception>
namespace Vid
{
const enum Format { uyvy }; // format = uyvy;
enum { rate = 2997, scale = 100 };
class FileError : public exception
{
public:
explicit FileError(const char* message);
explicit FileError(DWORD id);
const char* what() const;
private:
std::string message;
};
bool nameIsOK(const char* name);
typedef __int64 offset_type;
typedef unsigned __int64 size_type;
class File
{
public:
static const Format format;
enum mode_t {in, out};
File();
File(const char* name, mode_t mode, int iWidth = 0, int iHeight = 0);
~File();
void open(
const char* name,
mode_t mode,
DWORD flags = FILE_ATTRIBUTE_NORMAL);
void close();
void reset(int frameNum) const;
void advance(int count) const;
void read(void* frame) const;
void write(const void* frame);
bool isOpen() const;
bool eof() const;
mode_t mode() const;
const char* name() const;
int frameNum() const;
int frameCount() const;
size_type size() const;
void dimensions(int iWidth, int iHeight);
int width() const;
int height() const;
int frameSize() const;
private:
File& operator=(const File&);
File(const File&);
HANDLE m_handle;
// When opening for write with FILE_FLAG_OVERLAPPED
HANDLE m_hEvent;
OVERLAPPED m_overlapped;
mutable int frameNum_;
int frameCount_;
char name_[_MAX_PATH];
mode_t mode_;
int m_iWidth;
int m_iHeight;
int m_iFrameSize;
};
class MappedFile
{
public:
//For now, just implement read-only.
MappedFile();
MappedFile(const char* name, int iWidth = 0, int iHeight = 0);
~MappedFile();
void open(const char* name);
void close();
const char* name() const;
int frameCount() const;
void* map(int frameNum) const;
void unmap(int frameNum) const;
void unmap() const;
bool isMapped(int frameNum) const;
int mapCount() const;
void dimensions(int iWidth, int iHeight);
int width() const;
int height() const;
int frameSize() const;
private:
MappedFile(const MappedFile&);
MappedFile& operator=(const MappedFile&);
void init(int iWidth = 0, int iHeight = 0);
HANDLE file;
HANDLE mapping;
DWORD allocationGranularity;
int m_frameCount;
struct ViewInfo
{
void* view;
void* frame;
};
typedef std::map<int, ViewInfo> Views;
mutable Views views;
std::string m_name;
int m_iWidth;
int m_iHeight;
int m_iFrameSize;
};
}
#endif
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