[FFmpeg-devel] [PATCH] Fix mm_flags, mm_support for ARM

[Laurent Desnogues]

On Fri, Jun 27, 2008 at 7:47 PM, Siarhei Siamashka
<siarhei.siamashka at gmail.com> wrote:
> On Friday 27 June 2008, matthieu castet wrote:
[...]
>> +#ifdef ARCH_ARMV4L
>> +  //{"IDCT_ARM",        1, j_rev_dct_ARM,      idct, MMX_PERM},
>> /* should > be MMX_PERM perm, but produce strange result */
>
> Yes, 'j_rev_dct_ARM' is broken, it produces quite noticeable artefacts on
> decoding video. I think I already reported this issue here long ago. But as it
> is armv4 only, I was not interested in investigating this problem further...

I am glad someone else experienced that too, I was starting
to think I did not understand anything to permutations :-)

I will provide a version of dct-test with ARMv6 idct tomorrow.
I have checked it works with qemu (once I patched qemu...).


Laurent