On Fri, May 12, 2023 at 12:20 AM Marton Balint wrote:
>
>
> On Wed, 10 May 2023, Lance Wang wrote:
>
> > On Sat, May 6, 2023 at 8:41 PM Devin Heitmueller <
> > devin.heitmuel...@ltnglobal.com> wrote:
> >
> >> On Sat, May 6, 2023 at 8:16 AM James Almer wrote:
> >> > Can you bench with the
On Thu, May 11, 2023 at 6:20 PM Marton Balint wrote:
> Actually the cached bitstream reader was faster here than the manual
> approach:
>
> ./ffmpeg -stream_loop 128 -threads 1 -f bitpacked -pix_fmt yuv422p10le -s
> 3840x2160 -c:v bitpacked -i source.yuv -pix_fmt yuv422p10le -f null none
>
On Wed, 10 May 2023, Lance Wang wrote:
On Sat, May 6, 2023 at 8:41 PM Devin Heitmueller <
devin.heitmuel...@ltnglobal.com> wrote:
On Sat, May 6, 2023 at 8:16 AM James Almer wrote:
> Can you bench with the START_TIMER and STOP_TIMER macros in timer.h?
> Also, define CACHED_BITSTREAM_READER
On Sat, May 6, 2023 at 8:41 PM Devin Heitmueller <
devin.heitmuel...@ltnglobal.com> wrote:
> On Sat, May 6, 2023 at 8:16 AM James Almer wrote:
> > Can you bench with the START_TIMER and STOP_TIMER macros in timer.h?
> > Also, define CACHED_BITSTREAM_READER in bitpacked_dec.c before including
> >
On Sat, May 6, 2023 at 8:16 AM James Almer wrote:
> Can you bench with the START_TIMER and STOP_TIMER macros in timer.h?
> Also, define CACHED_BITSTREAM_READER in bitpacked_dec.c before including
> git_bits.h and test the actual implementation again, to see if it makes
> any difference.
Original
On 5/6/2023 9:13 AM, Devin Heitmueller wrote:
I added some instrumentation via the attached patch. You can see the
benefits here:
Before=1683378057.243350 After 1683378057.264239
Before=1683378083.335424 After 1683378083.356440
Before=1683378089.675400 After 1683378089.696512
I added some instrumentation via the attached patch. You can see the
benefits here:
Before=1683378057.243350 After 1683378057.264239
Before=1683378083.335424 After 1683378083.356440
Before=1683378089.675400 After 1683378089.696512
Before=1683378151.792324 After 1683378151.813579
21 ms per run
On Sat, May 6, 2023 at 1:32 PM Lance Wang wrote:
> On Sat, May 6, 2023 at 4:58 AM Devin Heitmueller <
> devin.heitmuel...@ltnglobal.com> wrote:
>
> > Rework the code a bit to speed up the 10-bit bitpacked decoding
> > routine. This is probably about as fast as I can get it without
> > switching
Hi Lance,
On Sat, May 6, 2023 at 7:32 AM Lance Wang wrote:
> FYI, on my development system, I run two time for the original and modified
> version and no obvious difference:
Simply running "time" against the binary isn't an accurate way to
measure a 60ms difference for a single frame being
On Sat, May 6, 2023 at 4:58 AM Devin Heitmueller <
devin.heitmuel...@ltnglobal.com> wrote:
> Rework the code a bit to speed up the 10-bit bitpacked decoding
> routine. This is probably about as fast as I can get it without
> switching to assembly language.
>
> Demonstratable with:
>
> ./ffmpeg
Rework the code a bit to speed up the 10-bit bitpacked decoding
routine. This is probably about as fast as I can get it without
switching to assembly language.
Demonstratable with:
./ffmpeg -f lavfi -i "smptehdbars=size=3840x2160" -c bitpacked -f image2
-frames:v 1 source.yuv
./ffmpeg -f
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