[FFmpeg-cvslog] avcodec/ituh263dec: Don't initialize unused RL VLCs

Andreas Rheinhardt git at videolan.org
Mon Jan 25 17:02:55 EET 2021


ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at gmail.com> | Wed Dec  9 01:11:40 2020 +0100| [a3831e81ff368f6c8f098b5c3dad80cae91bacae] | committer: Andreas Rheinhardt

avcodec/ituh263dec: Don't initialize unused RL VLCs

The ff_rl_intra_aic RLTable is only used by ituh263dec and ituh263enc;
the former is the only user of its RL VLC tables. It uses only the very
first one of these VLC tables, but up until now all 32 are initialized,
wasting 68696B from the .bss segment (or that amount of memory if this
decoder has actually been used). This commit changes this.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a3831e81ff368f6c8f098b5c3dad80cae91bacae
---

 libavcodec/ituh263dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c
index c9007b2fd6..3847745098 100644
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@@ -126,7 +126,7 @@ av_cold void ff_h263_decode_init_vlc(void)
         ff_rl_init(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]);
         ff_rl_init(&ff_rl_intra_aic, ff_h263_static_rl_table_store[1]);
         INIT_VLC_RL(ff_h263_rl_inter, 554);
-        INIT_VLC_RL(ff_rl_intra_aic, 554);
+        INIT_FIRST_VLC_RL(ff_rl_intra_aic, 554);
         INIT_VLC_STATIC(&h263_mbtype_b_vlc, H263_MBTYPE_B_VLC_BITS, 15,
                  &ff_h263_mbtype_b_tab[0][1], 2, 1,
                  &ff_h263_mbtype_b_tab[0][0], 2, 1, 80);



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