On Fri, Sep 07, 2018 at 04:50:57PM -0700, Dale Curtis wrote: > These tables represent ~70k so moving the allocation to when > they're actually used reduces memory usage in cases where the > h264 decoder isn't used.
> h264_cavlc.c | 43 ++++++++++++++++++++++++++-----------------
> 1 file changed, 26 insertions(+), 17 deletions(-)
> c7d67012a2207911076717c1667e698842fa101a cavlc-size.patch
> From e1cbe52a1f41a39698136efb4695d8d019117853 Mon Sep 17 00:00:00 2001
> From: Dale Curtis <dalecur...@chromium.org>
> Date: Fri, 31 Aug 2018 16:50:23 -0700
> Subject: [PATCH] Reduce static table size for VLC tables in h264_cavlc.c
>
> These tables represent ~70k so moving the allocation to when
> they're actually used reduces memory usage in cases where the
> h264 decoder isn't used.
>
> Signed-off-by: Dale Curtis <dalecur...@chromium.org>
> ---
> libavcodec/h264_cavlc.c | 43 +++++++++++++++++++++++++----------------
> 1 file changed, 26 insertions(+), 17 deletions(-)
>
> diff --git a/libavcodec/h264_cavlc.c b/libavcodec/h264_cavlc.c
> index a7e60676a0..7769202401 100644
> --- a/libavcodec/h264_cavlc.c
> +++ b/libavcodec/h264_cavlc.c
> @@ -236,35 +236,35 @@ static const uint8_t run_bits[7][16]={
> };
>
> static VLC coeff_token_vlc[4];
> -static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2];
> +static VLC_TYPE (*coeff_token_vlc_tables)[520+332+280+256][2];
> static const int coeff_token_vlc_tables_size[4]={520,332,280,256};
dont all modern OS assign physical memory only once something is stored
in these tables?
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
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