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From: Leo Izen <leo.izen@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH 5/9] avcodec/vlc: Pass VLC_MULTI_ELEM directly not by pointer
Date: Mon, 23 Oct 2023 02:10:35 -0400
Message-ID: <7096e5b9-6a8e-4875-a3b6-32b2fe2dbb11@gmail.com> (raw)
In-Reply-To: <20231022215113.3469-5-michael@niedermayer.cc>

On 10/22/23 17:51, Michael Niedermayer wrote:
> This makes the code more testable as uninitialized fields are 0
> and not random values from the last call
> 
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>   libavcodec/vlc.c | 14 +++++++-------
>   1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/libavcodec/vlc.c b/libavcodec/vlc.c
> index 9b7a42f79a3..4adec2da705 100644
> --- a/libavcodec/vlc.c
> +++ b/libavcodec/vlc.c
> @@ -356,7 +356,7 @@ static void add_level(VLC_MULTI_ELEM *table, const int is16bit,
>                         uint32_t curcode, int curlen,
>                         int curlimit, int curlevel,
>                         const int minlen, const int max,
> -                      unsigned* levelcnt, VLC_MULTI_ELEM *info)
> +                      unsigned* levelcnt, VLC_MULTI_ELEM info)


Is passing a struct by value advisable? Did you benchmark this? How does 
it compare to memset(info, 0, sizeof(*info))?

- Leo Izen (Traneptora)

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  reply	other threads:[~2023-10-23  6:10 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-22 21:51 [FFmpeg-devel] [PATCH 1/9] avcodec/vlc: merge lost 16bit end of array check Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 2/9] avcodec/vlc: dont pass nb_elems into multi vlc code Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 3/9] avcodec/vlc: Skip subtable entries in multi VLC Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 4/9] avcodec/vlc: Replace mysterious max computation code in multi vlc Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 5/9] avcodec/vlc: Pass VLC_MULTI_ELEM directly not by pointer Michael Niedermayer
2023-10-23  6:10   ` Leo Izen [this message]
2023-10-23 16:04     ` Michael Niedermayer
2023-10-24  9:54       ` Leo Izen
2023-10-31 22:22         ` Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 6/9] avcodec/vlc: Remove mysterious jitter loop in multi VLC Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 7/9] Revert "avcodec/vlc: add correct upper limit for recursive function" Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 8/9] Revert "avcodec/vlc: fix off by one in limit check for multi" Michael Niedermayer
2023-10-22 21:51 ` [FFmpeg-devel] [PATCH 9/9] avcodec/vlc: simplify min/maxbits in multi VLC Michael Niedermayer
2023-10-22 23:02 ` [FFmpeg-devel] [PATCH 1/9] avcodec/vlc: merge lost 16bit end of array check Paul B Mahol
2023-10-23 16:05   ` Michael Niedermayer
2023-10-26 22:35 ` Michael Niedermayer

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