core/DesktopEditor/raster/Jp2/Image.h

#pragma once

#include "Types.h"
#include "Utils.h"

namespace Jpeg2000
{
	//-------------------------------------------------------------------------------------------------------------------------------
	// Image
	//-------------------------------------------------------------------------------------------------------------------------------

	Image* Image_CreateEmpty()
	{
		Image *pImage = (Image*)Malloc(sizeof(Image));
		return pImage;
	}

	void   Image_Destroy(Image *pImage)
	{
		if (pImage)
		{
			if (pImage->pComponents)
			{
				for (int nIndex = 0; nIndex < pImage->nCsiz; nIndex++)
				{
					ImageComponent *pImageComp = &pImage->pComponents[nIndex];
					Free(pImageComp->pData);
				}
				Free(pImage->pComponents);
			}
			Free(pImage);
		}
	}

	Image* Image_Create(int nComponentsCount, ImageComponentParams *pCompParams, ColorSpace eColorSpace)
	{
		Image *pImage = NULL;
		pImage = (Image*)Malloc(sizeof(Image));

		if (pImage)
		{
			pImage->eColorSpace = eColorSpace;
			pImage->nCsiz       = nComponentsCount;

			// Выделяем память под компоненты
			pImage->pComponents = (ImageComponent*)Malloc(pImage->nCsiz * sizeof(ImageComponent));

			if (!pImage->pComponents)
			{
				Image_Destroy(pImage);
				return NULL;
			}

			for (int nCurComponent = 0; nCurComponent < nComponentsCount; nCurComponent++)
			{
				ImageComponent *pComponent = &pImage->pComponents[nCurComponent];

				pComponent->nXRsiz     = pCompParams[nCurComponent].nXRsiz;
				pComponent->nYRsiz     = pCompParams[nCurComponent].nYRsiz;
				pComponent->nWidth     = pCompParams[nCurComponent].nWidth;
				pComponent->nHeight    = pCompParams[nCurComponent].nHeight;
				pComponent->nXOsiz     = pCompParams[nCurComponent].nXoffset;
				pComponent->nYOsiz     = pCompParams[nCurComponent].nYoffset;
				pComponent->nPrecision = pCompParams[nCurComponent].nPrecision;
				pComponent->nBPP       = pCompParams[nCurComponent].nBPP;
				pComponent->nSigned    = pCompParams[nCurComponent].nSigned;

				pComponent->pData = (int*)Malloc(pComponent->nWidth * pComponent->nHeight * sizeof(int));
				if (!pComponent->pData)
				{
					Image_Destroy(pImage);
					return NULL;
				}
			}
		}
		else
		{
			// TO DO: Выдать сообщение об ошибке
		}

		return pImage;
	}
}