code_app/modules/imgfmt/HGOfd.cpp

#include "HGOfd.h"
#include "HGOfdImpl.hpp"

HGResult HGAPI HGImgFmt_CheckOfdFile(const HGChar* fileName, HGBool* isOfd)
{
	if (NULL == fileName || NULL == isOfd)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdReader reader = NULL;
	HGResult ret = HGImgFmt_OpenOfdReader(fileName, &reader);
	if (HGBASE_ERR_OK != ret)
	{
		return ret;
	}

	*isOfd = HGTRUE;
	HGImgFmt_CloseOfdReader(reader);
	return ret;
}

HGResult HGAPI HGImgFmt_OpenOfdReader(const HGChar* fileName, HGOfdReader* reader)
{
	if (NULL == fileName || NULL == reader)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdReaderImpl* ofdReaderImpl = new HGOfdReaderImpl;
	HGResult ret = ofdReaderImpl->Open(fileName);
	if (HGBASE_ERR_OK != ret)
	{
		delete ofdReaderImpl;
		return ret;
	}

	*reader = (HGOfdReader)ofdReaderImpl;
	return HGBASE_ERR_OK;
}

HGResult HGAPI HGImgFmt_CloseOfdReader(HGOfdReader reader)
{
	if (NULL == reader)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdReaderImpl* ofdReaderImpl = (HGOfdReaderImpl *)reader;
	HGResult ret = ofdReaderImpl->Close();
	if (HGBASE_ERR_OK != ret)
	{
		return ret;
	}

	delete ofdReaderImpl;
	return HGBASE_ERR_OK;
}

HGResult HGAPI HGImgFmt_GetOfdPageCount(HGOfdReader reader, HGUInt* count)
{
	if (NULL == reader)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdReaderImpl* ofdReaderImpl = (HGOfdReaderImpl*)reader;
	return ofdReaderImpl->GetPageCount(count);
}

HGResult HGAPI HGImgFmt_GetOfdPageInfo(HGOfdReader reader, HGUInt page, HGOfdPageInfo* info)
{
	if (NULL == reader)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdReaderImpl* ofdReaderImpl = (HGOfdReaderImpl*)reader;
	return ofdReaderImpl->GetPageInfo(page, info);
}

HGResult HGAPI HGImgFmt_LoadImageFromOfdReader(HGOfdReader reader, HGUInt page, HGFloat xScale, HGFloat yScale,
	HGUInt imgType, HGUInt imgOrigin, HGImage* image)
{
	if (NULL == reader)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdReaderImpl* ofdReaderImpl = (HGOfdReaderImpl*)reader;
	return ofdReaderImpl->LoadImage(page, xScale, yScale, imgType, imgOrigin, image);
}

HGResult HGAPI HGImgFmt_LoadOfdImage(const HGChar* fileName, HGOfdPageInfo* info, HGUInt imgType, HGUInt imgOrigin, HGImage* image)
{
	HGOfdReader reader = NULL;
	HGResult ret = HGImgFmt_OpenOfdReader(fileName, &reader);
	if (HGBASE_ERR_OK != ret)
	{
		return ret;
	}

	if (HGBASE_ERR_OK == ret && NULL != info)
		ret = HGImgFmt_GetOfdPageInfo(reader, 0, info);

	if (HGBASE_ERR_OK == ret && NULL != image)
		ret = HGImgFmt_LoadImageFromOfdReader(reader, 0, 1.0f, 1.0f, imgType, imgOrigin, image);

	HGImgFmt_CloseOfdReader(reader);
	return ret;
}

HGResult HGAPI HGImgFmt_OpenOfdImageWriter(const HGChar* fileName, HGOfdImageWriter* writer)
{
	if (NULL == fileName || NULL == writer)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdImageWriterImpl* ofdImageWriterImpl = new HGOfdImageWriterImpl;
	HGResult ret = ofdImageWriterImpl->Open(fileName);
	if (HGBASE_ERR_OK != ret)
	{
		delete ofdImageWriterImpl;
		return ret;
	}

	*writer = (HGOfdImageWriter)ofdImageWriterImpl;
	return HGBASE_ERR_OK;
}

HGResult HGAPI HGImgFmt_CloseOfdImageWriter(HGOfdImageWriter writer)
{
	if (NULL == writer)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdImageWriterImpl* ofdImageWriterImpl = (HGOfdImageWriterImpl*)writer;
	HGResult ret = ofdImageWriterImpl->Close();
	if (HGBASE_ERR_OK != ret)
	{
		return ret;
	}

	delete ofdImageWriterImpl;
	return HGBASE_ERR_OK;
}

HGResult HGAPI HGImgFmt_SaveJpegImageToOfdImageWriter(HGOfdImageWriter writer, HGImage image, const HGJpegSaveInfo* info)
{
	if (NULL == writer)
	{
		return HGBASE_ERR_INVALIDARG;
	}

	HGOfdImageWriterImpl* ofdImageWriterImpl = (HGOfdImageWriterImpl*)writer;
	return ofdImageWriterImpl->SaveJpegImage(image, info);
}

HGResult HGAPI HGImgFmt_SaveOfdJpegImage(HGImage image, const HGJpegSaveInfo* info, const HGChar* fileName)
{
	HGOfdImageWriter writer = NULL;
	HGResult ret = HGImgFmt_OpenOfdImageWriter(fileName, &writer);
	if (HGBASE_ERR_OK != ret)
	{
		return ret;
	}

	ret = HGImgFmt_SaveJpegImageToOfdImageWriter(writer, image, info);
	HGImgFmt_CloseOfdImageWriter(writer);
	return ret;
}