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[FFmpeg-devel,08/39] avcodec/h261dec: Don't initialize unused VLCs

Message ID 20201210111657.2276739-9-andreas.rheinhardt@gmail.com
State Accepted
Commit b9071a70fc27ec3f774a0e3babf0534c50369e14
Headers show
Series Make mpegvideo encoders init-threadsafe | expand

Checks

Context Check Description
andriy/x86_make success Make finished
andriy/x86_make_fate success Make fate finished

Commit Message

Andreas Rheinhardt Dec. 10, 2020, 11:16 a.m. UTC 
The H.261 decoder uses only the very first VLC of ff_h261_rl_tcoeff,
so only initialize this one. Saves 68448B from the .bss segment; in case
the decoder is actually used, this amount of memory is saved.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
---
 libavcodec/h261dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/libavcodec/h261dec.c b/libavcodec/h261dec.c
index 8a49e7d894..dfa779b574 100644
--- a/libavcodec/h261dec.c
+++ b/libavcodec/h261dec.c
@@ -65,7 +65,7 @@  static av_cold void h261_decode_init_vlc(H261Context *h)
         INIT_VLC_STATIC(&h261_cbp_vlc, H261_CBP_VLC_BITS, 63,
                         &ff_h261_cbp_tab[0][1], 2, 1,
                         &ff_h261_cbp_tab[0][0], 2, 1, 512);
-        INIT_VLC_RL(ff_h261_rl_tcoeff, 552);
+        INIT_FIRST_VLC_RL(ff_h261_rl_tcoeff, 552);
     }
 }