Provides a direct buffer access to a memory stream.

Adjusts the brightness of a 8-, 24- or 32-bit image by a certain amount.

Adjusts an image's brightness, contrast and gamma as well as it may optionally invert the image within a single operation.

Adjusts the contrast of a 8-, 24- or 32-bit image by a certain amount.

Perfoms an histogram transformation on a 8-, 24- or 32-bit image.

Performs gamma correction on a 8-, 24- or 32-bit image.

Appends a new page to the end of the bitmap.

Applies color mapping for one or several colors on a 1-, 4- or 8-bit palletized or a 16-, 24- or 32-bit high color image.

Applies palette index mapping for one or several indices on a 1-, 4- or 8-bit palletized image.

Makes an exact reproduction of an existing bitmap, including metadata and attached profile if any.

Copies the metadata of FreeImage bitmap to another.

Copies metadata from one FreeImage bitmap to another.

Creates and returns a copy of a FITAG object.

Close and free a memory stream.

Closes a previously opened multi-page bitmap and, when the bitmap was not opened read-only, applies any changes made to it.

Quantizes a high-color 24-bit bitmap to an 8-bit palette color bitmap.

Compares two FreeImage bitmaps.

Converts a bitmap to 16 bits, where each pixel has a color pattern of 5 bits red, 5 bits green and 5 bits blue. One bit in each pixel is unused.

Converts a bitmap to 16 bits, where each pixel has a color pattern of 5 bits red, 6 bits green and 5 bits blue.

Converts a bitmap to 24 bits. A clone of the input bitmap is returned for 24-bit bitmaps.

Converts a bitmap to 32 bits. A clone of the input bitmap is returned for 32-bit bitmaps.

Converts a bitmap to 4 bits. If the bitmap was a high-color bitmap (16, 24 or 32-bit) or if it was a monochrome or greyscale bitmap (1 or 8-bit), the end result will be a greyscale bitmap, otherwise (1-bit palletised bitmaps) it will be a palletised bitmap.

Converts a bitmap to 8 bits. If the bitmap was a high-color bitmap (16, 24 or 32-bit) or if it was a monochrome or greyscale bitmap (1 or 4-bit), the end result will be a greyscale bitmap, otherwise (1 or 4-bit palletised bitmaps) it will be a palletised bitmap.

Converts a bitmap to a 8-bit greyscale image with a linear ramp.

Converts a 24- or 32-bit RGB(A) standard image or a 48-bit RGB image to a FIT_RGBF type image.

Converts a non standard image whose color type is FIC_MINISBLACK to a standard 8-bit greyscale image.

Converts an image of any type to type dst_type.

Copy a sub part of the current dib image.

Converts an .NET Bitmap into a FreeImage bitmap.

Creates a FreeImage DIB from a Device Context/Compatible Bitmap.

Creates a new FIICCPROFILE block from ICC profile data previously read from a file or built by a color management system. The profile data is attached to the bitmap.

Allocates a new FITAG object. This object must be destroyed with a call to DeleteTag(FITAG) when no longer in use.

Deletes the page on the given position.

Delete a previously allocated FITAG object.

This function destroys an FIICCPROFILE previously created by CreateICCProfile(FIBITMAP, array<Byte>[]()[], Int32). After this call the bitmap will contain no profile information. This function should be called to ensure that a stored bitmap will not contain any profile information.

Converts a bitmap to 1-bit monochrome bitmap using a dithering algorithm. For 1-bit input bitmaps, the function clones the input bitmap and builds a monochrome palette.

Enlarges or shrinks the FreeImage bitmap selectively per side and fills newly added areas with the specified background color. See remarks for further details.

Checks if a plugin can save bitmaps in the desired bit depth.

Checks if a plugin can save a bitmap in the desired data type.

Checks if a plugin can load or save an ICC profile.

Checks if a plugin can load bitmaps.

Checks if a plugin can save bitmaps.

Sets all pixels of the specified image to the color provided through the color parameter. See remarks for further details.

Closes the specified metadata search handle and releases associated resources.

Flip the input dib horizontally along the vertical axis.

Flip the input dib vertically along the horizontal axis.

Frees a bitmap handle.

Creates a lookup table to be used with AdjustCurve(FIBITMAP, array<Byte>[]()[], FREE_IMAGE_COLOR_CHANNEL) which may adjusts brightness and contrast, correct gamma and invert the image with a single call to AdjustCurve(FIBITMAP, array<Byte>[]()[], FREE_IMAGE_COLOR_CHANNEL).

Returns the file background color of an image. For 8-bit images, the color index in the palette is returned in the rgbReserved member of the bkcolor parameter.

Converts a FreeImage bitmap to a .NET Bitmap.

Returns an HBITMAP created by the CreateDIBitmap() function which in turn has always the same color depth as the reference DC, which may be provided through hdc. The desktop DC will be used, if IntPtr.Zero DC is specified. Call FreeHbitmap(IntPtr) to free the handle.

Returns a pointer to the data-bits of the bitmap.

Returns a bit pattern describing the blue color component of a pixel in a FreeImage bitmap.

Returns the size of one pixel in the bitmap in bits.

Retrieves the red, green, blue or alpha channel of a 24- or 32-bit image.

Returns the number of colors used in a bitmap.

Investigates the color type of the bitmap by reading the bitmap's pixel bits and analysing them.

Retrieves the real part, imaginary part, magnitude or phase of a complex image.

Returns a string containing a standard copyright message.

Returns the size of the DIB-element of a FIBITMAP in memory.

Returns the horizontal resolution, in pixels-per-meter, of the target device for the bitmap.

Returns the vertical resolution, in pixels-per-meter, of the target device for the bitmap.

Retrieves the number of FREE_IMAGE_FORMAT identifiers being currently registered.

Returns a descriptive string that describes the bitmap formats the given plugin can read and/or write.

Returns a comma-delimited file extension list describing the bitmap formats the given plugin can read and/or write.

This function takes a filename or a file-extension and returns the plugin that can read/write files with that extension in the form of a FREE_IMAGE_FORMAT identifier.

Returns a FREE_IMAGE_FORMAT identifier from the format string that was used to register the FIF.

Returns a FREE_IMAGE_FORMAT identifier from a MIME content type string (MIME stands for Multipurpose Internet Mail Extension).

Given a FREE_IMAGE_FORMAT identifier, returns a MIME content type string (MIME stands for Multipurpose Internet Mail Extension).

Returns a regular expression string that can be used by a regular expression engine to identify the bitmap. FreeImageQt makes use of this function.

Orders FreeImage to analyze the bitmap signature.

Uses the FreeImageIO structure as described in the topic bitmap management functions to identify a bitmap type.

Uses a memory handle to identify a bitmap type.

Orders FreeImage to analyze the bitmap signature. In case the stream is not seekable, the stream will have been used and must be recreated for loading.

Returns the FREE_IMAGE_FORMAT for the specified ImageFormat.

Returns the string that was used to register a plugin from the system assigned FREE_IMAGE_FORMAT.

Returns a bit pattern describing the green color component of a pixel in a FreeImage bitmap.

Retrieves an hBitmap for a FreeImage bitmap. Call FreeHbitmap(IntPtr) to free the handle.

Returns the height of the bitmap in pixel units.

Computes the image histogram.

Retrieves a pointer to the FIICCPROFILE data of the bitmap. This function can also be called safely, when the original format does not support profiles.

Retrieves the FIICCPROFILE data of the bitmap. This function can also be called safely, when the original format does not support profiles.

Returns the comment of a JPEG, PNG or GIF image.

Retrieves the type of the bitmap.

Alias for FreeImage_GetInfoHeader that returns a pointer to a BITMAPINFO rather than to a BITMAPINFOHEADER.

Returns the BITMAPINFO structure of a FreeImage bitmap. The structure is a copy, so changes will have no effect on the bitmap itself.

Returns a pointer to the BITMAPINFOHEADER of the DIB-element in a FIBITMAP.

Returns the BITMAPINFOHEADER structure of a FreeImage bitmap. The structure is a copy, so changes will have no effect on the bitmap itself.

Returns the width of the bitmap in bytes.

Retrieves the number of pages that are locked in a multi-paged bitmap.

Returns an array of page-numbers that are currently locked in memory. When the pages parameter is null, the size of the array is returned in the count variable.

Retrieves a list locked pages of a multi-paged bitmap.

Returns the number of tags contained in the model metadata model attached to the input dib.

Returns the version of the native FreeImage library.

Returns the number of pages currently available in the multi-paged bitmap.

Returns a pointer to the bitmap's palette.

Returns a structure that represents the palette of a FreeImage bitmap.

Returns the width of the bitmap in bytes, rounded to the next 32-bit boundary, also known as pitch or stride or scan width.

Get the pixel color of a 16-, 24- or 32-bit image at position (x, y), including range check (slow access).

Returns the pixelformat of the bitmap.

Get the pixel index of a palettized image at position (x, y), including range check (slow access).

This function returns the primary (main or most commonly used?) extension of a certain image format (fif). This is done by returning the first of all possible extensions returned by GetFIFExtensionList(). That assumes, that the plugin returns the extensions in ordered form.

Returns a bit pattern describing the red color component of a pixel in a FreeImage bitmap.

Retrieves a DIB's resolution in X-direction measured in 'dots per inch' (DPI) and not in 'dots per meter'.

Retrieves a DIB's resolution in Y-direction measured in 'dots per inch' (DPI) and not in 'dots per meter'.

Returns a pointer to the start of the given scanline in the bitmap's data-bits.

Returns the number of components in the tag (in tag type units).

Returns the tag description.

Returns the tag ID.

Returns the tag field name (unique inside a metadata model).

Returns the length of the tag value in bytes.

Returns the tag data type.

Returns the tag value. It is up to the programmer to interpret the returned pointer correctly, according to the results of GetTagType and GetTagCount.

Returns the number of transparent colors in a palletised bitmap.

Returns a pointer to the bitmap's transparency table.

Returns the FreeImage bitmap's transparency table. The array is empty in case the bitmap has no transparency table.

Returns the palette entry used as transparent color for the image specified. Works for palletised images only and returns -1 for high color images or if the image has no color set to be transparent.

Retrieves all parameters needed to create a new FreeImage bitmap from raw bits Image.

This function returns the number of unique colors actually used by the specified 1-, 4-, 8-, 16-, 24- or 32-bit image. This might be different from what function FreeImage_GetColorsUsed() returns, which actually returns the palette size for palletised images. Works for FIT_BITMAP type images only.

Returns a string containing the current version of the library.

Returns the width of the bitmap in pixel units.

Returns the internal version of this FreeImage .NET wrapper.

Returns whether the bitmap has a file background color.

Inserts a new page before the given position in the bitmap.

Inverts each pixel data.

Returns a value indicating if the FreeImage library is available or not. See remarks for further details.

Returns whether the image is a greyscale image or not. The function scans all colors in the bitmaps palette for entries where red, green and blue are not all the same (not a grey color). Supports 1-, 4- and 8-bit bitmaps.

Returns whether the platform is using Little Endian.

Retrieves the state of a plugin.

Verifies whether the FreeImage bitmap is 16bit 555.

Verifies whether the FreeImage bitmap is 16bit 565.

Returns whether the transparency table is enabled.

Performs a lossless crop on a JPEG file.

Performs a lossless rotation or flipping on a JPEG file.

Decodes a bitmap, allocates memory for it and returns it as a FIBITMAP.

Loads a .NET Bitmap from a file.

Loads a bitmap from an arbitrary source.

Decodes a bitmap from a stream, allocates memory for it and returns it as a FIBITMAP.

Open a multi-page bitmap from a memory stream.

Loads a FreeImage multi-paged bitmap from a stream and returns the FreeImage memory stream used as temporary buffer. The bitmap can not be modified by calling AppendPage(FIMULTIBITMAP, FIBITMAP), InsertPage(FIMULTIBITMAP, Int32, FIBITMAP), MovePage(FIMULTIBITMAP, Int32, Int32) or DeletePage(FIMULTIBITMAP, Int32).

Locks a page in memory for editing.

Converts a SVG color name into a corresponding RGB value.

Converts a X11 color name into a corresponding RGB value.

Creates a thumbnail from a greyscale or RGB(A) image, keeping aspect ratio.

Moves the source page to the position of the target page.

Solves a Poisson equation, remap result pixels to [0..1] and returns the solution.

Open a memory stream.

Loads a FreeImage multi-paged bitmap. Load flags can be provided by the flags parameter.

Loads a FreeImage multi-pages bitmap from the specified handle using the specified functions. Load flags can be provided by the flags parameter.

Calls the set error message function in FreeImage.

Alpha blend or combine a sub part image with the current dib image. The bit depth of the dst bitmap must be greater than or equal to the bit depth of the src.

Applies the alpha value of each pixel to its color components. The aplha value stays unchanged. Only works with 32-bits color depth.

Reads data from a memory stream.

Registers a new plugin to be used in FreeImage. The plugin is residing in a DLL. The Init function must be called “Init” and must use the stdcall calling convention.

Registers a new plugin to be used in FreeImage.

Performs resampling (or scaling, zooming) of a greyscale or RGB(A) image to the desired destination width and height.

Rotates a 4-bit color FreeImage bitmap. Allowed values for angle are 90, 180 and 270. In case angle is 0 or 360 a clone is returned. 0 is returned for other values or in case the rotation fails.

This function rotates a 1-, 8-bit greyscale or a 24-, 32-bit color image by means of 3 shears. 1-bit images rotation is limited to integer multiple of 90°. null is returned for other values.

This function performs a rotation and / or translation of an 8-bit greyscale, 24- or 32-bit image, using a 3rd order (cubic) B-Spline.

Saves a previosly loaded FIBITMAP to a file.

Saves a bitmap to an arbitrary source.

Saves a previosly loaded FIBITMAP to a stream.

Moves the memory handle to a specified location.

Insert a 8-bit dib into a 24- or 32-bit image. Both images must have to same width and height.

Set the real or imaginary part of a complex image. Both images must have to same width and height.

Set the horizontal resolution, in pixels-per-meter, of the target device for the bitmap.

Set the vertical resolution, in pixels-per-meter, of the target device for the bitmap.

Sets the comment of a JPEG, PNG or GIF image.

Set the pixel color of a 16-, 24- or 32-bit image at position (x, y), including range check (slow access).

Set the pixel index of a palettized image at position (x, y), including range check (slow access).

Enables or disables a plugin.

Sets a DIB's resolution in X-direction measured in 'dots per inch' (DPI) and not in 'dots per meter'.

Sets a DIB's resolution in Y-direction measured in 'dots per inch' (DPI) and not in 'dots per meter'.

Sets the number of data in the tag.

Sets the tag description.

Sets the tag ID.

Sets the tag field name.

Sets the length of the tag value in bytes.

Sets the tag data type.

Sets the tag value.

Set the FreeImage bitmap's transparency table. Only affects palletised bitmaps.

Tells FreeImage if it should make use of the transparency table or the alpha channel that may accompany a bitmap.

Sets the index of the palette entry to be used as transparent color for the image specified. Does nothing on high color images.

Swaps two specified colors on a 1-, 4- or 8-bit palletized or a 16-, 24- or 32-bit high color image.

Swaps two specified palette indices on a 1-, 4- or 8-bit palletized image.

Converts a FreeImage tag structure to a string that represents the interpreted tag value. The function is not thread safe.

Gets the current position of a memory handle.

Converts a bitmap to 1-bit monochrome bitmap using a threshold T between [0..255]. The function first converts the bitmap to a 8-bit greyscale bitmap. Then, any brightness level that is less than T is set to zero, otherwise to 1. For 1-bit input bitmaps, the function clones the input bitmap and builds a monochrome palette.

Converts a High Dynamic Range image to a 24-bit RGB image using a global operator based on logarithmic compression of luminance values, imitating the human response to light.

Apply the Gradient Domain High Dynamic Range Compression to a RGBF image and convert to 24-bit RGB.

Converts a High Dynamic Range image to a 24-bit RGB image using a global operator inspired by photoreceptor physiology of the human visual system.

Converts a High Dynamic Range image (48-bit RGB or 96-bit RGBF) to a 24-bit RGB image, suitable for display.

Deletes a previously loaded FIBITMAP from memory.

Deletes a previously loaded FreeImage bitmap from memory and resets the handle to 0.

Unlocks a previously locked page and gives it back to the multi-page engine.

Writes data to a memory stream.

Compresses a source buffer into a target buffer, using the ZLib library.

Generates a CRC32 checksum.

Decompresses a source buffer into a target buffer, using the ZLib library.

Compresses a source buffer into a target buffer, using the ZLib library.

Decompresses a source buffer into a target buffer, using the ZLib library.

Specifies that the bitmap is not compressed and that the color table consists of three DWORD color masks that specify the red, green, and blue components, respectively, of each pixel. This is valid when used with 16- and 32-bpp bitmaps.

Windows 98/Me, Windows 2000/XP: Indicates that the image is a JPEG image.

Windows 98/Me, Windows 2000/XP: Indicates that the image is a PNG image.

An uncompressed format.

An RLE format for bitmaps with 4 bpp. The compression format is a 2-byte format consisting of a count byte followed by two word-length color indexes.

A run-length encoded (RLE) format for bitmaps with 8 bpp. The compression format is a 2-byte format consisting of a count byte followed by a byte containing a color index.

Number of bytes to shift left within a 4 byte block.

Mask indicating the position of the given color.

Number of bits to shift left within a 32 bit block.

Number of bytes to shift left within a 4 byte block.

Mask indicating the position of the given color.

Number of bits to shift left within a 32 bit block.

Number of bytes to shift left within a 4 byte block.

Mask indicating the position of the given color.

Number of bits to shift left within a 32 bit block.

Number of bytes to shift left within a 4 byte block.

Mask indicating the position of the given color.

Number of bits to shift left within a 32 bit block.

Mask indicating the position of color components of a 32 bit color.

Mask indicating the position of the given color.

Number of bits to shift left within a 16 bit block.

Mask indicating the position of the given color.

Number of bits to shift left within a 16 bit block.

Mask indicating the position of the given color.

Number of bits to shift left within a 16 bit block.

Mask indicating the position of the given color.

Number of bits to shift left within a 16 bit block.

Mask indicating the position of the given color.

Number of bits to shift left within a 16 bit block.

Mask indicating the position of the given color.

Number of bits to shift left within a 16 bit block.

Array containing all 'FREE_IMAGE_MDMODEL's.

Major version of the library.

Minor version of the library.

Release version of the library.

Internal errors in FreeImage generate a logstring that can be captured by this event.