[FFmpeg-devel] [PATCH] swscale-test: add md5 output

Ramiro Polla ramiro.polla
Mon Aug 16 22:09:35 CEST 2010

On Mon, Aug 2, 2010 at 8:29 PM, Ramiro Polla <ramiro.polla at gmail.com> wrote:
> On Sat, Jul 31, 2010 at 7:47 PM, Vitor Sessak <vitor1001 at gmail.com> wrote:
>> On 08/01/2010 12:31 AM, Ramiro Polla wrote:
>>> On Sat, Jul 31, 2010 at 7:27 PM, Vitor Sessak<vitor1001 at gmail.com> ?wrote:
>>>> On 07/31/2010 11:10 PM, Ramiro Polla wrote:
>>>>> On Sun, Jul 25, 2010 at 9:54 PM, Michael Niedermayer<michaelni at gmx.at>
>>>>> ?wrote:
>>>>>> SSE of 123 does not implicate that there is no change to a previous SSE
>>>>>> of 123
>>>>>> and a change of CRC does tell nothing of the SSE
>>>>> For regression tests we want a checksum to be bitexact (I'll send a
>>>>> patch to add the bitexact flag to sws_flags later), and in this case
>>>>> the SSE doesn't matter.
>>>> It does, because every time there is a patch that is expected to change
>>>> the
>>>> CRC (and thus update the reference output of the tests) it is easy to
>>>> know
>>>> if it improves or reduce the PSNR by just looking at the diff of the
>>>> reference file. That's the reason why "make test" prints also the
>>>> psnr/stddev.
>>> Hm, I was hoping that whenever the checksum changed, the dev would
>>> himself run swscale-test -sse...
>> It is always clearer to see the stddev before and after the patch right
>> there in the diff in case the reviewer want to know...
>>> So do you think it'd be best to always print out both checksum and sse?
>> I think it is worth the few extra bytes per test.
> New patch attached.

New patch attached which takes into account pixel formats where
dstStride != dstW (like nv12).
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