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/*
* This file is part of NetSurf's LibNSGIF, http://www.netsurf-browser.org/
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
*
* Copyright 2017 Michael Drake <michael.drake@codethink.co.uk>
*/
#ifndef LZW_H_
#define LZW_H_
/**
* \file
* \brief LZW decompression (interface)
*
* Decoder for GIF LZW data.
*/
/* Declare lzw internal context structure */
struct lzw_ctx;
/** LZW decoding response codes */
typedef enum lzw_result {
LZW_OK, /**< Success */
LZW_OK_EOD, /**< Success; reached zero-length sub-block */
LZW_NO_MEM, /**< Error: Out of memory */
LZW_NO_DATA, /**< Error: Out of data */
} lzw_result;
/**
* Create an LZW decompression context.
*
* \param[out] ctx Returns an LZW decompression context. Caller owned,
* free with lzw_context_destroy().
* \return LZW_OK on success, or appropriate error code otherwise.
*/
lzw_result lzw_context_create(
struct lzw_ctx **ctx);
/**
* Destroy an LZW decompression context.
*
* \param[in] ctx The LZW decompression context to destroy.
*/
void lzw_context_destroy(
struct lzw_ctx *ctx);
#endif
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