Hi,
Yes you just have to allocate your source and destination, fill the
source with your data, create the SwsContext, use sws_scale, and then
the whole data will be in the first field of the "destination.data". And
linesize contains the number of bytes per line of your frame. I use
AVPictures, but I guess it works the same :
- avpicture_alloc src
- avpicture_alloc dest
- SwsContext* sws_context = sws_getContext(...)
- avpicture_fill(src, data, ...)
- sws_scale(sws_context, ...)
I don't know if you want to render it directly onto a texture, but if so
you may have to tell your opengl function the data format is BGR.
Hope it helps,
Thibault.
Arnau Font wrote:
> Hi!
>
> I have the AVFrame with the data returned from FFMEG, and I want to display
> the frame as a OpenGL texture, as you do. I mean, I have the source for
> sws_scale, but not the destination. I guess I have to reserve some memory to
> allocate the texture, that will be the 'dst' parameter, and the linesizes
> are the length for each colour... or not? I'm quite confused about that.
>
> Thanks Thibault!
>
>
>
>> -----Missatge original-----
>> De: [email protected] [mailto:libav-user-
>> [email protected]] En nom de Thibault Daoulas
>> Enviat: dilluns, 15 / desembre / 2008 21:28
>> Per a: Libav* user questions and discussions
>> Tema: Re: [libav-user] FFMpeg and OpenGL
>>
>> Hi Arnau,
>>
>> I'm not sure if that's what you're looking for, but I use from a
>> streaming output sws_scale indeed to display my frames as textures with
>> OpenGL... So do you already have the data you want to display?
>>
>> Thibault.
>>
>> Arnau Font wrote:
>>
>>> Hi group!
>>>
>>>
>>>
>>> I'm trying to develop a videoplayer in opengl. I've followed the SDL
>>>
>> and
>>
>>> FFMPEG tutorial and now I have a functional player under SDL, using
>>>
>> the
>>
>>> SDL_Overlays and all that. But now I want to use openGL. I guess I
>>>
>> have to
>>
>>> do a sws_scale to a opengl format, but I'm quite lost about how to do
>>>
>> it.
>>
>>> Does anybody have a working example or some guidelines?
>>>
>>>
>>>
>>> Lots of thanks!!
>>>
>>>
>>>
>>> Arnau Font
>>>
>>>
>>>
>>>
>>>
>>> ---------------------------------------------------------------------
>>>
>> ---
>>
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>>>
>>>
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>
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