cbs: Remove useless initializations
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 <[email protected]>
diff --git a/libavcodec/cbs_av1.c b/libavcodec/cbs_av1.c
index eb6b801..288ef8e 100644
--- a/libavcodec/cbs_av1.c
+++ b/libavcodec/cbs_av1.c
@@ -574,7 +574,7 @@
#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 @@
} 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 @@
} 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 @@
} 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)
