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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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14
libavcodec/cbs_av1.c
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@@ -574,7 +574,7 @@ static size_t cbs_av1_get_payload_bytes_left(GetBitContext *gbc)
#define RWContext GetBitContext
#define xf(width, name, var, range_min, range_max, subs, ...) do { \
uint32_t value = range_min; \
uint32_t value; \
CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), \
&value, range_min, range_max)); \
@@ -582,7 +582,7 @@ static size_t cbs_av1_get_payload_bytes_left(GetBitContext *gbc)
} while (0)
#define xsu(width, name, var, subs, ...) do { \
int32_t value = 0; \
int32_t value; \
CHECK(ff_cbs_read_signed(ctx, rw, width, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), &value, \
MIN_INT_BITS(width), \
@@ -591,27 +591,27 @@ static size_t cbs_av1_get_payload_bytes_left(GetBitContext *gbc)
} while (0)
#define uvlc(name, range_min, range_max) do { \
uint32_t value = range_min; \
uint32_t value; \
CHECK(cbs_av1_read_uvlc(ctx, rw, #name, \
&value, range_min, range_max)); \
current->name = value; \
} while (0)
#define ns(max_value, name, subs, ...) do { \
uint32_t value = 0; \
uint32_t value; \
CHECK(cbs_av1_read_ns(ctx, rw, max_value, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), &value)); \
current->name = value; \
} while (0)
#define increment(name, min, max) do { \
uint32_t value = 0; \
uint32_t value; \
CHECK(cbs_av1_read_increment(ctx, rw, min, max, #name, &value)); \
current->name = value; \
} while (0)
#define subexp(name, max, subs, ...) do { \
uint32_t value = 0; \
uint32_t value; \
CHECK(cbs_av1_read_subexp(ctx, rw, max, #name, \
SUBSCRIPTS(subs, __VA_ARGS__), &value)); \
current->name = value; \
@@ -629,7 +629,7 @@ static size_t cbs_av1_get_payload_bytes_left(GetBitContext *gbc)
} while (0)
#define leb128(name) do { \
uint64_t value = 0; \
uint64_t value; \
CHECK(cbs_av1_read_leb128(ctx, rw, #name, &value)); \
current->name = value; \
} while (0)