On Fri, Oct 06, 2017 at 05:30:57PM +0200, Nicolas Bertrand wrote:
> From: Maxime Taisant
>
> ---
> libavcodec/jpeg2000dwt.c | 45 +-
> libavcodec/jpeg2000dwt.h |5 +
> libavcodec/x86/jpeg2000dsp.asm| 1339
> +
> libavcodec/x86/jpeg
2017-10-06 17:30 GMT+02:00 Nicolas Bertrand :
> From: Maxime Taisant
>
> ---
> libavcodec/jpeg2000dwt.c | 45 +-
> libavcodec/jpeg2000dwt.h |5 +
> libavcodec/x86/jpeg2000dsp.asm| 1339
> +
> libavcodec/x86/jpeg2000dsp_init.c | 119
From: Maxime Taisant
---
libavcodec/jpeg2000dwt.c | 45 +-
libavcodec/jpeg2000dwt.h |5 +
libavcodec/x86/jpeg2000dsp.asm| 1339 +
libavcodec/x86/jpeg2000dsp_init.c | 119
tests/checkasm/jpeg2000dsp.c |1 +
5 files cha
On Fri, Aug 11, 2017 at 06:32:37PM +0300, Ivan Kalvachev wrote:
> On 8/10/17, maxime taisant wrote:
> >> From: Ivan Kalvachev
> >> On 8/8/17, maxime taisant wrote:
> >> > From: Maxime Taisant
> >> >
> >> > Hi,
> >> >
> >> > Here is some SSE optimisations for the dwt function used to decode
> >
On 8/10/17, maxime taisant wrote:
>> From: Ivan Kalvachev
>> On 8/8/17, maxime taisant wrote:
>> > From: Maxime Taisant
>> >
>> > Hi,
>> >
>> > Here is some SSE optimisations for the dwt function used to decode
>> > JPEG2000.
>> > I tested this code by using the time command while reading a JP
> From: Maxime Taisant
>
> > From: Ivan Kalvachev
> >
> > On 8/8/17, maxime taisant wrote:
> > > From: Maxime Taisant
> > >
> > > +movups m2, [lineq+2*j0q-24]
> > > +movups m5, [lineq+2*j0q-8]
> > > +shufps m2, m5, 0xDD
> > > +addps m2, m1
> > > +mulps m2, m3
> > > +su
> From: Clément Bœsch
>
> On Tue, Aug 08, 2017 at 09:09:44AM +, maxime taisant wrote:
> > From: Maxime Taisant
> >
> > Hi,
> >
> > Here is some SSE optimisations for the dwt function used to decode
> JPEG2000.
> > I tested this code by using the time command while reading a
> JPEG2000 enco
> From: Ivan Kalvachev
>
> On 8/8/17, maxime taisant wrote:
> > From: Maxime Taisant
> >
> > Hi,
> >
> > Here is some SSE optimisations for the dwt function used to decode
> JPEG2000.
> > I tested this code by using the time command while reading a
> JPEG2000
> > encoded video with ffmpeg and,
On Tue, Aug 8, 2017 at 2:09 AM, maxime taisant
wrote:
>
> [...]
> +void (*dwt_decode)(DWTContext *s, void *t);
Why the global variable? It seems unnecessary, and as Clément pointed out,
is unsafe and should not be used in the FFmpeg code base (at least not
without a very good justification and s
On Tue, Aug 08, 2017 at 09:09:44AM +, maxime taisant wrote:
> From: Maxime Taisant
>
> Hi,
>
> Here is some SSE optimisations for the dwt function used to decode JPEG2000.
> I tested this code by using the time command while reading a JPEG2000 encoded
> video with ffmpeg and, on average, I
On 8/8/17, maxime taisant wrote:
> From: Maxime Taisant
>
> Hi,
>
> Here is some SSE optimisations for the dwt function used to decode JPEG2000.
> I tested this code by using the time command while reading a JPEG2000
> encoded video with ffmpeg and, on average, I observed a 4.05% general
> improv
From: Maxime Taisant
Hi,
Here is some SSE optimisations for the dwt function used to decode JPEG2000.
I tested this code by using the time command while reading a JPEG2000 encoded
video with ffmpeg and, on average, I observed a 4.05% general improvement, and
a 12.67% improvement on the dwt dec
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