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avcodec/lzw: ff_lzw_decode_tail() now returns the consumed bytes in lzw decompress

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Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Ni Hui
2015-11-10 22:03:36 +08:00
committed by Michael Niedermayer
parent 7b67fe20f6
commit c75640e9c9
2 changed files with 3 additions and 2 deletions
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3
libavcodec/lzw.c
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@@ -93,7 +93,7 @@ static int lzw_get_code(struct LZWState * s)
return c & s->curmask; return c & s->curmask;
} }
void ff_lzw_decode_tail(LZWState *p) int ff_lzw_decode_tail(LZWState *p)
{ {
struct LZWState *s = (struct LZWState *)p; struct LZWState *s = (struct LZWState *)p;
@@ -104,6 +104,7 @@ void ff_lzw_decode_tail(LZWState *p)
} }
}else }else
bytestream2_skip(&s->gb, bytestream2_get_bytes_left(&s->gb)); bytestream2_skip(&s->gb, bytestream2_get_bytes_left(&s->gb));
return bytestream2_tell(&s->gb);
} }
av_cold void ff_lzw_decode_open(LZWState **p) av_cold void ff_lzw_decode_open(LZWState **p)

2
libavcodec/lzw.h
View File

@@ -47,7 +47,7 @@ void ff_lzw_decode_open(LZWState **p);
void ff_lzw_decode_close(LZWState **p); void ff_lzw_decode_close(LZWState **p);
int ff_lzw_decode_init(LZWState *s, int csize, const 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); int ff_lzw_decode(LZWState *s, uint8_t *buf, int len);
void ff_lzw_decode_tail(LZWState *lzw); int ff_lzw_decode_tail(LZWState *lzw);
/** LZW encode state */ /** LZW encode state */
struct LZWEncodeState; struct LZWEncodeState;