fix aliasing warnings. simpler too.

[ffmpeg] / libavcodec / lzw.c

diff --git a/libavcodec/lzw.c b/libavcodec/lzw.c
index 6bc0b9a48a2bac009339dbc561a8f1abd2ce8760..833c9d0ab376b936988523e27645a29cf5c81110 100644 (file)
--- a/libavcodec/lzw.c
+++ b/libavcodec/lzw.c
@@ -42,7 +42,7 @@ static const uint16_t mask[17] =
 };
 
 struct LZWState {
-    uint8_t *pbuf, *ebuf;
+    const uint8_t *pbuf, *ebuf;
     int bbits;
     unsigned int bbuf;
 
@@ -91,7 +91,7 @@ static int lzw_get_code(struct LZWState * s)
     return c & s->curmask;
 }
 
-uint8_t* ff_lzw_cur_ptr(LZWState *p)
+const uint8_t* ff_lzw_cur_ptr(LZWState *p)
 {
     return ((struct LZWState*)p)->pbuf;
 }
@@ -127,7 +127,7 @@ void ff_lzw_decode_close(LZWState **p)
  * @param buf_size input data size
  * @param mode decoder working mode - either GIF or TIFF
  */
-int ff_lzw_decode_init(LZWState *p, int csize, uint8_t *buf, int buf_size, int mode)
+int ff_lzw_decode_init(LZWState *p, int csize, const uint8_t *buf, int buf_size, int mode)
 {
     struct LZWState *s = (struct LZWState *)p;