[FFmpeg-cvslog] avcodec/mathops: Set hidden visibility where advantageous

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Fri Sep  2 22:54:04 2022 +0200| [0b95a6a1d0b3d9c06aedd5fc929804661addd263] | committer: Andreas Rheinhardt

avcodec/mathops: Set hidden visibility where advantageous

It is advantageous for ff_crop_tab, as the base pointer used to
access this table is not the first element of it. But the real
base pointer is still at a constant offset from the code/the GOT
and can therefore be accessed relative to the instruction pointer
(if supported by the arch) or relative to the GOT; without this,
one has to first load address of ff_crop_tab (potentially via
the GOT) and then offset manually (which is what the earlier code
did).

Reviewed-by: Martin Storsjö <martin at martin.st>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0b95a6a1d0b3d9c06aedd5fc929804661addd263
---

 libavcodec/mathops.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/mathops.h b/libavcodec/mathops.h
index f81d21f9c4..c89054d6ed 100644
--- a/libavcodec/mathops.h
+++ b/libavcodec/mathops.h
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 
+#include "libavutil/attributes_internal.h"
 #include "libavutil/common.h"
 #include "config.h"
 
@@ -32,7 +33,7 @@
 extern const uint32_t ff_inverse[257];
 extern const uint8_t ff_log2_run[41];
 extern const uint8_t ff_sqrt_tab[256];
-extern const uint8_t ff_crop_tab[256 + 2 * MAX_NEG_CROP];
+extern const uint8_t attribute_visibility_hidden ff_crop_tab[256 + 2 * MAX_NEG_CROP];
 extern const uint8_t ff_zigzag_direct[64];
 extern const uint8_t ff_zigzag_scan[16+1];