[FFmpeg-devel] [PATCH 3/3] avcodec/jpeglsdec: Avoid get_bits_long() where possible
Andreas Rheinhardt
andreas.rheinhardt at outlook.com
Sat Jan 8 15:06:43 EET 2022
Andreas Rheinhardt:
> It is possible here, because the values of ff_log2_run used
> here are actually in the range 0..15 given that run_index is
> in the range 0..31.
>
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
> ---
> libavcodec/jpeglsdec.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
> index 32c0d2eb3f..269c71dc18 100644
> --- a/libavcodec/jpeglsdec.c
> +++ b/libavcodec/jpeglsdec.c
> @@ -277,7 +277,7 @@ static inline int ls_decode_line(JLSState *state, MJpegDecodeContext *s,
> /* decode aborted run */
> r = ff_log2_run[state->run_index[comp]];
> if (r)
> - r = get_bits_long(&s->gb, r);
> + r = get_bits(&s->gb, r);
> if (x + r * stride > w) {
> r = (w - x) / stride;
> }
>
Will apply this patch tonight unless there are objections.
- Andreas
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