From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Subject: [FFmpeg-devel] [PATCH 6/9] avcodec/me_cmp: Mark ff_square_tab as hidden
Date: Thu, 6 Oct 2022 02:57:11 +0200
Message-ID: <GV1P250MB0737F66CF274D44BCE7B17738F5C9@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <GV1P250MB0737BBD8F1146BE42D2AA46A8F5C9@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM>
ff_square_tab is always used with an offset; if this table
is marked as hidden, the compiler can infer that it and
therefore also ff_square_tab + 256 have a fixed offset
from the code. This allows to avoid performing "+ 256"
at runtime by baking it into the offset from the code to
the table.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
libavcodec/me_cmp.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavcodec/me_cmp.h b/libavcodec/me_cmp.h
index c6de2d0061..90ea76c891 100644
--- a/libavcodec/me_cmp.h
+++ b/libavcodec/me_cmp.h
@@ -21,9 +21,11 @@
#include <stdint.h>
+#include "libavutil/attributes_internal.h"
+
#include "avcodec.h"
-extern const uint32_t ff_square_tab[512];
+extern const uint32_t attribute_visibility_hidden ff_square_tab[512];
/* minimum alignment rules ;)
--
2.34.1
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
next prev parent reply other threads:[~2022-10-06 0:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-06 0:54 [FFmpeg-devel] [PATCH 1/9] avcodec/x86/simple_idct: Empty MMX state in ff_simple_idct_mmx Andreas Rheinhardt
2022-10-06 0:57 ` [FFmpeg-devel] [PATCH 2/9] avcodec/mjpegenc_common: Don't check luma/chroma matrices unnecessarily Andreas Rheinhardt
2022-10-06 0:57 ` [FFmpeg-devel] [PATCH 3/9] avcodec/ljpegenc: Remove unused IDCTDSPContext Andreas Rheinhardt
2022-10-06 0:57 ` [FFmpeg-devel] [PATCH 4/9] avcodec/ljpegenc: Remove unnecessary emms_c() Andreas Rheinhardt
2022-10-06 0:57 ` [FFmpeg-devel] [PATCH 5/9] avcodec/asvdec: " Andreas Rheinhardt
2022-10-06 0:57 ` Andreas Rheinhardt [this message]
2022-10-06 0:57 ` [FFmpeg-devel] [PATCH 7/9] avcodec/vc2enc: Don't use bitcount when byte-aligned Andreas Rheinhardt
2022-10-06 0:57 ` [FFmpeg-devel] [PATCH 8/9] avcodec/speedhqenc: Remove unnecessary headers Andreas Rheinhardt
2022-10-06 0:57 ` [FFmpeg-devel] [PATCH 9/9] avcodec/mjpegenc_common: Don't flush unnecessarily Andreas Rheinhardt
2022-10-08 9:10 ` [FFmpeg-devel] [PATCH 1/9] avcodec/x86/simple_idct: Empty MMX state in ff_simple_idct_mmx Andreas Rheinhardt
2022-10-08 18:26 ` Michael Niedermayer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=GV1P250MB0737F66CF274D44BCE7B17738F5C9@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM \
--to=andreas.rheinhardt@outlook.com \
--cc=ffmpeg-devel@ffmpeg.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Git Inbox Mirror of the ffmpeg-devel mailing list - see https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
This inbox may be cloned and mirrored by anyone:
git clone --mirror https://master.gitmailbox.com/ffmpegdev/0 ffmpegdev/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 ffmpegdev ffmpegdev/ https://master.gitmailbox.com/ffmpegdev \
ffmpegdev@gitmailbox.com
public-inbox-index ffmpegdev
Example config snippet for mirrors.
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git