/*
* LZW decoder
- * Copyright (c) 2003 Fabrice Bellard.
- * Copyright (c) 2006 Konstantin Shishkov.
+ * Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2006 Konstantin Shishkov
*
* This file is part of FFmpeg.
*
*/
/**
- * @file lzw.h
+ * @file
* @brief LZW decoding routines
* @author Fabrice Bellard
* Modified for use in TIFF by Konstantin Shishkov
*/
-#ifndef LZW_H
-#define LZW_H
+#ifndef AVCODEC_LZW_H
+#define AVCODEC_LZW_H
+
+#include <stdint.h>
+
+struct PutBitContext;
enum FF_LZW_MODES{
FF_LZW_GIF,
/* first two functions de/allocate memory for LZWState */
void ff_lzw_decode_open(LZWState **p);
void ff_lzw_decode_close(LZWState **p);
-int ff_lzw_decode_init(LZWState *s, int csize, uint8_t *buf, int buf_size, int mode);
+int ff_lzw_decode_init(LZWState *s, int csize, const uint8_t *buf, int buf_size, int mode);
int ff_lzw_decode(LZWState *s, uint8_t *buf, int len);
-uint8_t* ff_lzw_cur_ptr(LZWState *lzw);
+const uint8_t* ff_lzw_cur_ptr(LZWState *lzw);
void ff_lzw_decode_tail(LZWState *lzw);
-#endif
+/** LZW encode state */
+struct LZWEncodeState;
+extern const int ff_lzw_encode_state_size;
+
+void ff_lzw_encode_init(struct LZWEncodeState *s, uint8_t *outbuf, int outsize,
+ int maxbits, enum FF_LZW_MODES mode,
+ void (*lzw_put_bits)(struct PutBitContext *, int, unsigned int));
+int ff_lzw_encode(struct LZWEncodeState * s, const uint8_t * inbuf, int insize);
+int ff_lzw_encode_flush(struct LZWEncodeState *s,
+ void (*lzw_flush_put_bits)(struct PutBitContext *));
+
+#endif /* AVCODEC_LZW_H */