Re: [info-performer] How to put Video Stream into performer in real-time?

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From: Paolo Farinelli (paolo++at++sgi.com)
Date: 03/16/2004 19:56:52

Hi JaeYoon,

you can use pfTexture::subload and pfTexture::subloadLevel.

Check out pfTexture man pages for more info.

Your Performer code would look something like this
(make sure you do this in a DRAW process):

tex->subloadLevel ( PFTEX_SOURCE_IMAGE /* source */,
                                   readVideoFrameBuf /* image */,
                                   0, 0, /* xsrc, ysrc */
                                  1024, /* srcwidth */
                                   0, 0, /* xdst, ydst */
                                   1024, 1024, /* xsize, ysize */
                                   PFTEX_LEVEL_BASE /* miplevel */ );

Hope this helps.
Regards,
Paolo

JaeYoon Kim wrote:

> HI
>
> I am interested in puting video stream into perfermer in real-time.
>
> In OpenGL, we use glTextImage2D() to insert rgb data of video stream. ( example source code)
> I think there is simiar function or way in performer, but I am unskilled at performer.
> How to conver this code to performer?
>
> Could you give me any advice ?
> Thanks
>
>
>
> <example OpenGL source code>
>
> glEnable(GL_TEXTURE_2D);
> glBindTexture(GL_TEXTURE_2D, texHandle);
> glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, glInternalFormat,glType, readVideoFrameBuf);
>
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-- 
Paolo Farinelli                                           paolo++at++sgi.com
Member of Technical Staff, OpenGL Performer              1-650-933-1808
Silicon Graphics        1600 Amphitheatre Pkwy, Mountain View, CA 94043

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