IG_fltr_save

This function stores the image referenced by hIGear to the specified memory buffer.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_fltr_save_mem( HIGEAR hIGear, LPVOID lpImage, AT_UINT nImageSize, AT_UINT nBufferSize, AT_LMODE lFormatType, AT_UINT nPageNumber, AT_BOOL bOverwrite, LPAT_UINT lpActualSize );

Arguments:

Name	Type	Description
hIGear	HIGEAR	HIGEAR handle of the image to save.
lpImage	LPVOID	Pointer to first byte of memory area in which to save.
nImageSize	AT_UINT	Size of image (if exists).
nBufferSize	AT_UINT	Size of memory block.
lFormatType	AT_LMODE	Specifies the format to use for saving, and also the compression scheme if applicable. See enumIGSaveFormats for possible values.
nPageNumber	AT_UINT	Specifies the page number of the page inserted into a multi-page file. Note that page numbers begin at 1, not 0. Set to 0 to append the page after the last page of the source file. Set to 1 if the file format does not support multipage, or if saving to a new file.
bOverwrite	AT_BOOL	Set to TRUE to overwrite existing file during the saving. Set to FALSE to insert or append the page to the file, if the format supports multipage saving.
lpActualSize	LPAT_UINT	Size of new or updated file in memory.

Return Value:

Returns 0 if successful. Otherwise, returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

All pixel formats supported by ImageGear Professional.

Sample:

Memory IO

Example:

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AT_ERRCOUNT nErrCount; HIGEAR hIGear = 0; AT_UINT nFileSize; // File size returned; nErrCount = IG_load_file("picture.tif", &hIGear); if(nErrCount == 0) { // Get required memory size nErrCount = IG_fltr_save_mem_size_calc(hIGear, NULL, 0, IG_SAVE_TIF_UNCOMP, 1, TRUE, &nFileSize); if(nErrCount == 0) { // Allocate memory LPAT_BYTE memBuffer = (LPAT_BYTE)malloc(nFileSize); nErrCount = IG_fltr_save_mem(hIGear, memBuffer, 0, nFileSize, IG_SAVE_TIF_UNCOMP, 1, TRUE, &nFileSize); //... free(memBuffer); } IG_image_delete(hIGear); }

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AT_ERRCOUNT nErrCount;

HIGEAR hIGear = 0;
AT_UINT nFileSize;    // File size returned;
nErrCount = IG_load_file("picture.tif", &hIGear);
if(nErrCount == 0)
{
    // Get required memory size
    nErrCount = IG_fltr_save_mem_size_calc(hIGear, NULL, 0, IG_SAVE_TIF_UNCOMP, 1, TRUE, &nFileSize);
    if(nErrCount == 0)
    {
        // Allocate memory
        LPAT_BYTE memBuffer = (LPAT_BYTE)malloc(nFileSize);
        nErrCount = IG_fltr_save_mem(hIGear, memBuffer, 0, nFileSize, IG_SAVE_TIF_UNCOMP, 1, TRUE, &nFileSize);

        //...

        free(memBuffer);
    }
    IG_image_delete(hIGear);
}

Remarks:

lFormatType is used to set the format and compression (if applicable) of the output file. If you want to have ImageGear use the file extension provided in your filename string (lpszFilename) to determine the file format in which to save the file, set lFormatType = IG_SAVE_UNKNOWN.

Before using this function, the application must allocate a memory buffer, sufficient for storing the saved image. Use IG_fltr_save_mem_size_calc to determine the necessary buffer size.

This function is similar to the IG_save_mem function, but it allows you to insert a new page in multi-page file as either the end page or the page with a given nPageNumber number.

See also the section Using Format Filters API for Image Saving.