[MPlayer-dev-eng] -vo mga quiestions

[Nick Kurshev]

Hello, Arpi!

On Mon, 12 Nov 2001 20:16:08 +0200 (CEST) you wrote:

> Hi,
> 
> > Currently I'm working on radeon_vid driver.
> > It's already in pre-alpha stage and maybe soon I'll
> > commit this stuff.
> > 
> > But I have some quiestions:
> > 
> > -What about mga_vid2?
> > (I mean that mplayer should pass more parameters to driver
> > and can query driver about some features - like supported formats and so on
> > In addition it would be possible to implement hw acceleration of subtitles
> > and much more)
> hmm. as currently only mga_vid is working, it has no sense. if more drivers
> come like your radeon_vid and my ati_vid (or is hould change name then to
> mach64_vid) it has some sense. btw we should keep current interface, and add
yes - because ATI is name of firm but not chipset ;)
> soem new ioctls to query supported formats.
> 
Agree
> > -Where are primary location of mga_vid and sis_vid drivers?
> in source tree? drivers/*
> installed i dunno, maybe at the lib/modules/*/misc
> 
I meant that they author is Aaron Holtzman. Did he participate with mplayer in the past?
 
> > Could someone (probably Arpi) explain me logic of -vo mga?
> what logic? it simply enables non-colorkeyed overlay at 0,0 position at dest
> w/h size.
> 
I'm ready to add colorkey support, but I don't know what is it.
Radeon supports also:
brightness saturation control
gamma correction
deinterlace pattern !!!
video key control

> > (Currently I have matrix from 20 images which are tiled on screen
> > (matrix 5x4). All images are changed synchronously :( ?
> strange. maybe you have problems with stride.
> note that -vo mga uses 32 byte align at each line (mga hw limitation)
> 
> > Does -vo mga support -zoom or -fs -zoom options
> no
> 
But why it's named BES?
I've spend a lot of my time to program SCALER :(

> > (My tracing shows me that mga_config has dest_width(heihgt) == src_width(height)
> > with any combinations of those keys).
> > 
> > - Is IMGFMT_IYUV == FOURCC_YUV12 or FOURCC_YUV09 ?
> IYUV==I420 and it's the same as YV12 but U V planes swapped.
> 
> i don't know about any hw which supports YUV9.
> 
Radeon VE ;)
Also:
    switch(config->format)
    {
        case IMGFMT_RGB15:
        case IMGFMT_BGR15:
        case IMGFMT_RGB16:
	case IMGFMT_BGR16:
        case IMGFMT_RGB24:
        case IMGFMT_BGR24:
        case IMGFMT_RGB32:
	case IMGFMT_BGR32:

        case IMGFMT_YVU9:
	case IMGFMT_IYUV:
	case IMGFMT_UYVY:

	case IMGFMT_YV12:
	case IMGFMT_I420:
	case IMGFMT_YUY2:
				break;
	default:
		printk( "radeon_vid: Unsupported pixel format: 0x%X\n",config->format);
		return -1;
    }

> 
> A'rpi / Astral & ESP-team
> 
> --
> mailto:arpi at thot.banki.hu
> http://esp-team.scene.hu
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> 


Best regards! Nick