[FFmpeg-devel] [PATCH 2/2] swresample/resample: rework resample_one function to work the same way as the others

[Marton Balint]

On Tue, 27 Feb 2024, Michael Niedermayer wrote:

> On Tue, Feb 27, 2024 at 10:48:10AM +0100, Marton Balint wrote:
>> Signed-off-by: Marton Balint <cus at passwd.hu>
>> ---
>>  libswresample/resample.c          | 29 +++++++----------------------
>>  libswresample/resample.h          |  4 ++--
>>  libswresample/resample_template.c | 14 ++++++++++++--
>>  3 files changed, 21 insertions(+), 26 deletions(-)
>
> what effect does this have on speed ?

For the following command line

time ./ffprobe -f lavfi \
"sine=440:r=8000:d=86400:samples_per_frame=2048,aresample=24000:filter_size=1:phase_shift=0" \
-show_packets >/dev/null

Before the patch:

real	0m3,916s
user	0m3,812s
sys	0m0,104s

After the patch:

real    0m3,597s
user    0m3,457s
sys     0m0,140s

So it actually speed things up.

Regards,
Marton