com.googlecode.leptonica.android

Class ReadFile

java.lang.Object

com.googlecode.leptonica.android.ReadFile

public class ReadFile
extends Object

Image input and output methods.

Author:

alanv@google.com (Alan Viverette)

Constructor Summary

Constructors

Constructor and Description
ReadFile()

Method Summary

Methods

Modifier and Type	Method and Description
static Pix	readBitmap(android.graphics.Bitmap bmp) Creates a Pix object from Bitmap data.
static Pix	readBytes8(byte[] pixelData, int width, int height) Creates an 8bpp Pix object from raw 8bpp grayscale pixels.
static Pix	readFile(File file) Creates a Pix object from encoded file data.
static Pixa	readFiles(File dir, String prefix) Creates a Pixa object from encoded files in a directory.
static Pix	readMem(byte[] encodedData) Creates a 32bpp Pix object from encoded data.
static boolean	replaceBytes8(Pix pixs, byte[] pixelData, int width, int height) Replaces the bytes in an 8bpp Pix object with raw grayscale 8bpp pixels.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadFile

public ReadFile()

Method Detail

readMem

public static Pix readMem(byte[] encodedData)

Creates a 32bpp Pix object from encoded data. Supported formats are BMP and JPEG.

Parameters:

encodedData - JPEG or BMP encoded byte data.

Returns:

a 32bpp Pix object

readBytes8

public static Pix readBytes8(byte[] pixelData,
             int width,
             int height)

Creates an 8bpp Pix object from raw 8bpp grayscale pixels.

Parameters:

pixelData - 8bpp grayscale pixel data.

width - The width of the input image.

height - The height of the input image.

Returns:

an 8bpp Pix object

replaceBytes8

public static boolean replaceBytes8(Pix pixs,
                    byte[] pixelData,
                    int width,
                    int height)

Replaces the bytes in an 8bpp Pix object with raw grayscale 8bpp pixels. Width and height be identical to the input Pix.

Parameters:

pixs - The Pix whose bytes will be replaced.

pixelData - 8bpp grayscale pixel data.

width - The width of the input image.

height - The height of the input image.

Returns:

an 8bpp Pix object

readFiles

public static Pixa readFiles(File dir,
             String prefix)

Creates a Pixa object from encoded files in a directory. Supported formats are BMP and JPEG.

Parameters:

dir - The directory containing the files.

prefix - The prefix of the files to load into a Pixa.

Returns:

a Pixa object containing one Pix for each file

readFile

public static Pix readFile(File file)

Creates a Pix object from encoded file data. Supported formats are BMP and JPEG.

Parameters:

file - The JPEG or BMP-encoded file to read in as a Pix.

Returns:

a Pix object

readBitmap

public static Pix readBitmap(android.graphics.Bitmap bmp)

Creates a Pix object from Bitmap data. Currently supports only ARGB_8888-formatted bitmaps.

Parameters:

bmp - The Bitmap object to convert to a Pix.

Returns:

a Pix object