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avfilter/blend_modes: Always preserve constness

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These casts cast const away temporarily; they are safe, because
the pointers that are initialized point to const data. But this
is nevertheless not nice and leads to warnings when using
-Wcast-qual. blend_modes.c generates 546 (2*39*7) such warnings
which is the majority of such warnings for FFmpeg as a whole.
vf_blend.c and vf_blend_init.h also use this pattern;
they have also been changed.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2023-09-07 15:30:30 +02:00
parent 29c6f4329a
commit 44dcc4d606
3 changed files with 6 additions and 6 deletions
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4
libavfilter/blend_modes.c
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@@ -93,8 +93,8 @@ static void fn0(NAME)(const uint8_t *_top, ptrdiff_t top_linesize, \
ptrdiff_t width, ptrdiff_t height, \
FilterParams *param, double *values, int starty) \
{ \
const PIXEL *top = (PIXEL *)_top; \
const PIXEL *bottom = (PIXEL *)_bottom; \
const PIXEL *top = (const PIXEL *)_top; \
const PIXEL *bottom = (const PIXEL *)_bottom; \
PIXEL *dst = (PIXEL *)_dst; \
const float opacity = param->opacity; \
\

4
libavfilter/vf_blend.c
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@@ -133,8 +133,8 @@ static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize,
ptrdiff_t width, ptrdiff_t height, \
FilterParams *param, double *values, int starty) \
{ \
const type *top = (type*)_top; \
const type *bottom = (type*)_bottom; \
const type *top = (const type*)_top; \
const type *bottom = (const type*)_bottom; \
type *dst = (type*)_dst; \
AVExpr *e = param->e; \
int y, x; \

4
libavfilter/vf_blend_init.h
View File

@@ -82,8 +82,8 @@ static void blend_normal_##name(const uint8_t *_top, ptrdiff_t top_linesize,
ptrdiff_t width, ptrdiff_t height, \
FilterParams *param, double *values, int starty) \
{ \
const type *top = (type*)_top; \
const type *bottom = (type*)_bottom; \
const type *top = (const type*)_top; \
const type *bottom = (const type*)_bottom; \
type *dst = (type*)_dst; \
const float opacity = param->opacity; \
\