FreeImage_FIFSupportsExportBPP

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DLL_API BOOL DLL_CALLCONV FreeImage_FIFSupportsExportBPP(FREE_IMAGE_FORMAT fif, int bpp);

Retorna TRUE si el plugin perteneciente al FREE_IMAGE_FORMAT dado puede guardar un mapa de bits con la profundidad de bits deseada, FALSE en caso contrario.

/**
Builds a series of string pairs that specify filters you can apply to save a file.
The filter string is to be used by a 'File Save As' dialog box (GetSaveFileName or
CFileDialog).
@param szFilter Input and output parameters. szFilter is an array of char whose length
should be 2048 or more.
@param bpp The bit depth of the image to be saved.
@param image_type The image type to be saved
@return Return the number of supported export formats
*/
int GetSaveAsFilterString(char *szFilter, WORD bpp, FREE_IMAGE_TYPE image_type) {
    int i, iCount;
    char Filter[2048];
    char *token;
    szFilter[0] = '\0';
    iCount = 0;

    // Build a string for each format
    for(i = 0; i < FreeImage_GetFIFCount(); i++) {
        // Check that the dib can be saved in this format
        BOOL bCanSave;
        FREE_IMAGE_FORMAT fif = (FREE_IMAGE_FORMAT)i;
        if(image_type == FIT_BITMAP) {
            // standard bitmap type
            bCanSave = (FreeImage_FIFSupportsWriting(fif) &&
                FreeImage_FIFSupportsExportBPP(fif, bpp));
        } else {
            // special bitmap type
            bCanSave = FreeImage_FIFSupportsExportType(fif, image_type);
        }
        if(bCanSave) {
            // Handle the special case of PNM files
            strcpy(Filter, FreeImage_GetFormatFromFIF((FREE_IMAGE_FORMAT)i));
            if((bpp == 1) & & (!strncmp(Filter, "PGM", 3) || !strncmp(Filter, "PPM", 3)))
                continue;
            if((bpp == 8) & & (!strncmp(Filter, "PBM", 3) || !strncmp(Filter, "PPM", 3)))
                continue;
            if((bpp == 24) & & (!strncmp(Filter, "PGM", 3) || !strncmp(Filter, "PBM", 3)))
                continue;
            // Description
            sprintf(Filter, "%s (%s)|", FreeImage_GetFIFDescription((FREE_IMAGE_FORMAT)i),
            FreeImage_GetFIFExtensionList((FREE_IMAGE_FORMAT)i));
            strcat(szFilter, Filter);
            // Extension(s)
            strcpy(Filter, FreeImage_GetFIFExtensionList((FREE_IMAGE_FORMAT)i));
            token = strtok(Filter, ",");
            while(token != NULL) {
            strcat(szFilter, "*.");
            strcat(szFilter, token);
            strcat(szFilter, ";");
            // get next token
            token = strtok(NULL, ",");
            }
            szFilter[strlen(szFilter)-1] = '|';
            iCount++;
        }
    }
    strcat(szFilter, "|");
    return iCount;
}