de.javagl.jgltf.model.io

Class MimeTypes

java.lang.Object

de.javagl.jgltf.model.io.MimeTypes

public class MimeTypes
extends java.lang.Object

Utility methods to related to the MIME type from data URLs or image data

Method Summary

Modifier and Type	Method and Description
static java.lang.String	guessImageMimeTypeString(java.lang.String uriString, java.nio.ByteBuffer imageData) Tries to detect the format of the given image URI and its data and return the corresponding MIME type string.
static java.lang.String	guessImageMimeTypeStringUnchecked(java.nio.ByteBuffer imageData) Tries to detect the format of the given image data, and return the corresponding MIME type string.
static java.lang.String	imageFileNameExtensionForMimeTypeString(java.lang.String mimeTypeString) Obtain the file name extension (without the "."

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

guessImageMimeTypeStringUnchecked

public static java.lang.String guessImageMimeTypeStringUnchecked(java.nio.ByteBuffer imageData)

Tries to detect the format of the given image data, and return the corresponding MIME type string.

This may, for example, be "image/png" or "image/gif" or "image/jpeg" (not "image/jpg"!).

Parameters:

imageData - The image data

Returns:

The image format string

guessImageMimeTypeString

public static java.lang.String guessImageMimeTypeString(java.lang.String uriString,
                                                        java.nio.ByteBuffer imageData)

Tries to detect the format of the given image URI and its data and return the corresponding MIME type string.

This may, for example, be "image/png" or "image/gif" or "image/jpeg" (not "image/jpg"!).

This method will do an (unspecified) best-effort approach to detect the mime type, either from the image or from the image data (which are both optional). If the type can not be determined, then null will be returned.

Parameters:

uriString - The URI string

imageData - The image data

Returns:

The image format string, or null if it can not be detected.

imageFileNameExtensionForMimeTypeString

public static java.lang.String imageFileNameExtensionForMimeTypeString(java.lang.String mimeTypeString)

Obtain the file name extension (without the "." dot) for an image file with the given MIME type. Valid input and return values are

• "image/jpeg" : "jpg"
• "image/png" : "png"
• "image/gif" : "gif"

For other inputs, a warning will be printed, and null will be returned.

Parameters:

mimeTypeString - The MIME type string

Returns:

The file extension