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cbs: Remove useless initializations

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Up until now, a temporary variable was used and initialized every time a
value was read in CBS; if reading turned out to be successfull, this
value was overwritten (without having ever been looked at) with the
value read if reading was successfull; on failure the variable wasn't
touched either. Therefore these initializations can be and have been
removed.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt
2019-06-20 01:45:11 +02:00
committed by Mark Thompson
parent c2a91645c5
commit b71a0367a6
5 changed files with 17 additions and 17 deletions
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8
libavcodec/cbs_vp9.c
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@@ -267,14 +267,14 @@ static int cbs_vp9_write_le(CodedBitstreamContext *ctx, PutBitContext *pbc,
#define RWContext GetBitContext
#define xf(width, name, var, subs, ...) do { \
uint32_t value = 0; \
uint32_t value; \
CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), \
&value, 0, (1 << width) - 1)); \
var = value; \
} while (0)
#define xs(width, name, var, subs, ...) do { \
int32_t value = 0; \
int32_t value; \
CHECK(cbs_vp9_read_s(ctx, rw, width, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), &value)); \
var = value; \
@@ -282,7 +282,7 @@ static int cbs_vp9_write_le(CodedBitstreamContext *ctx, PutBitContext *pbc,
#define increment(name, min, max) do { \
uint32_t value = 0; \
uint32_t value; \
CHECK(cbs_vp9_read_increment(ctx, rw, min, max, #name, &value)); \
current->name = value; \
} while (0)
@@ -315,7 +315,7 @@ static int cbs_vp9_write_le(CodedBitstreamContext *ctx, PutBitContext *pbc,
} while (0)
#define fixed(width, name, value) do { \
av_unused uint32_t fixed_value = value; \
av_unused uint32_t fixed_value; \
CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
0, &fixed_value, value, value)); \
} while (0)