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Change-Id: Id03a992491f907f278fcaad11e94f70f1baccd5f
2011-02-18 10:26:42 -08:00
examples oops: forgotten call to Initialize() 2011-02-18 10:26:42 -08:00
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Description:
============

WEBP decoder: libwebpdecode.so is a simple library for
decoding WEBP image files. 

See http://code.google.com/speed/webp


It is released under the same license as the WebM project.
See http://www.webmproject.org/license/software/ or the
file "COPYING" file for details. An additional intellectual
property rights grant can be found in the file PATENTS.


API:
====

This is mainly just one function to call, so just have a look at
the file src/webp/decode.h for the details and variants:

#include "webp/decode.h"
uint8_t* WebPDecodeRGB(const uint8_t* data, uint32_t data_size,
                       int *width, int *height);

A lower-level API is available from the header file <webp/decode_vp8.h>


Building:
=========

If everything goes right, then:

./configure
make
make install

should be all you need to have the following files

/usr/local/include/webp/decode.h
/usr/local/include/webp/decode_vp8.h
/usr/local/lib/libwebpdecode.*

installed.


Decoding example:
=================

there's a decoding example in example/dwebp.c which will take a .webp file and
decode it to a PNG image file. This is simply to demonstrate use of the API.
It also decodes to PPM (or even PGM) format.
You can verify the file test.webp decodes to exactly the same as test_ref.ppm:
  `cd examples && ./dwebp test.webp -ppm -o test.ppm && diff test.ppm test_ref.ppm`

Bugs:
=====

Please report all bugs to our issue tracker:
    http://code.google.com/p/webp/issues
Patches welcome! See this page to get started:
    http://www.webmproject.org/code/contribute/submitting-patches/

Discuss:
========

Email: webp-discuss@webmproject.org