It can't because the corresponding trees don't have any loose ends.
Removing the checks also removed an instance of av_log(NULL (with a
nonsense message) from the codebase.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
libavcodec/mdec.c | 2 --
libavcodec/mpeg12.h | 4 ----
libavcodec/mpeg12dec.c | 4 ----
3 files changed, 10 deletions(-)
diff --git a/libavcodec/mdec.c b/libavcodec/mdec.c
index 7e34ec568e..b16cbb6a79 100644
--- a/libavcodec/mdec.c
+++ b/libavcodec/mdec.c
@@ -71,8 +71,6 @@ static inline int mdec_decode_block_intra(MDECContext *a,
int16_t *block, int n)
} else {
component = (n <= 3 ? 0 : n - 4 + 1);
diff = decode_dc(&a->gb, component);
- if (diff >= 0xffff)
- return AVERROR_INVALIDDATA;
a->last_dc[component] += diff;
block[0] = a->last_dc[component] * (1 << 3);
}
diff --git a/libavcodec/mpeg12.h b/libavcodec/mpeg12.h
index 1ec99f17e1..345d473d3a 100644
--- a/libavcodec/mpeg12.h
+++ b/libavcodec/mpeg12.h
@@ -47,10 +47,6 @@ static inline int decode_dc(GetBitContext *gb, int component)
} else {
code = get_vlc2(gb, ff_dc_chroma_vlc.table, DC_VLC_BITS, 2);
}
- if (code < 0){
- av_log(NULL, AV_LOG_ERROR, "invalid dc code at\n");
- return 0xffff;
- }
if (code == 0) {
diff = 0;
} else {
diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index 2494226aa3..7b448d3648 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -490,8 +490,6 @@ static inline int mpeg2_decode_block_intra(MpegEncContext
*s,
component = (n & 1) + 1;
}
diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return AVERROR_INVALIDDATA;
dc = s->last_dc[component];
dc += diff;
s->last_dc[component] = dc;
@@ -578,8 +576,6 @@ static inline int
mpeg2_fast_decode_block_intra(MpegEncContext *s,
component = (n & 1) + 1;
}
diff = decode_dc(&s->gb, component);
- if (diff >= 0xffff)
- return AVERROR_INVALIDDATA;
dc = s->last_dc[component];
dc += diff;
s->last_dc[component] = dc;
--
2.25.1
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