#ifndef __HGPNM_H__
#define __HGPNM_H__

#include "../base/HGDef.h"
#include "../base/HGBaseErr.h"
#include "HGImgFmtErr.h"
#include "../base/HGImage.h"

#define HGIMGFMT_PNMTYPE_BINARY_ASCII		1L
#define HGIMGFMT_PNMTYPE_BINARY_BINARY		2L
#define HGIMGFMT_PNMTYPE_GRAY_ASCII			3L
#define HGIMGFMT_PNMTYPE_GRAY_BINARY		4L
#define HGIMGFMT_PNMTYPE_RGB_ASCII			5L
#define HGIMGFMT_PNMTYPE_RGB_BINARY			6L

#pragma pack(push)
#pragma pack(4)

typedef struct
{
	HGUInt width; /* 图像宽 */
	HGUInt height; /* 图像高 */
	HGUInt type; /* 类型 */
}HGPnmLoadInfo;

typedef struct
{
	HGUInt type; /* 类型 */
}HGPnmSaveInfo;

#pragma pack(pop)


HGEXPORT HGResult HGAPI HGImgFmt_CheckPnmFile(const HGChar* fileName, HGBool* isPnm);

HGEXPORT HGResult HGAPI HGImgFmt_GetPnmTypeFromFileName(const HGChar* fileName, HGUInt* pnmType);

HGEXPORT HGResult HGAPI HGImgFmt_LoadPnmImage(const HGChar* fileName, HGPnmLoadInfo* info,
	HGUInt imgType, HGUInt imgOrigin, HGImage* image);

HGEXPORT HGResult HGAPI HGImgFmt_SavePnmImage(HGImage image, const HGPnmSaveInfo* info, const HGChar* fileName);

#endif // __HGPNM_H__