[jitter] lua gencoord

On Oct 25, 2007, at 2:03 AM, MarkDavid Hosale wrote
:
> here's a simple lua slab patch that seems to have better results  
> than your previous example in terms of the long movie frame rate  
> thing. I am not sure if there is any advantage to creating the  
> jit.qt.movie object in lua over max other than for clarity in your  
> script. I'm not doing it here. I tried to make this patch real  
> simple so you could build up from it and test as you go. You could  
> bypass slab, use the uyvy colormode, etc. for example.
>
> I found the glvideotrail.lua example real useful when learning the  
> video texturing.
>
> BTW, I am by far no expert, and maybe you know this already, but  
> you mentioned separating the cpu and gpu. As I understand it all  
> the quicktime stuff and most matrix stuff is cpu unless you move it  
> to the gpu via slab. OpenGL and shaders are gpu. I did notice some  
> new graphics cards that are handling quicktime calls, but I think  
> that is a separate issue.
>
>> Sorry to tear up the bandwidth with this.
>
> seems to me that's what this list is for...
>
> Anyway, I hope this patch helps. shoot more questions, and post  
> more examples, I find this discussion really useful-
> -MarkDavid



cool. I feel now (tomorrow) I am ready to start to deal simply with  
GPU issues in jit.gl.lua. I will look at the glvideotrail.lua again  
tomorrow.

I made one more attempt using jit.matrix instances within jit.gl.lua  
and then using the importmovie message to load still pictures.  
Problem with reading them directly into the jit.matrix is I cannot  
specify colormode uvyv. This is why I didn't bring them to a  
videoplane yet. It seems to work though, but I only tested with 20  
images. I haven't gotten into the memsize attribute. Also I was  
having a bit of trouble outputting an int in another outlet than the  
first. It came out as lists with just one float element.

Find it below or on the site:

http://home.earthlink.net/~posit/lua/

cheers,

(())_n



-- lua code es.matrix.lua

autogarbage = 1
autowatch = 1
gc = 1
vmatrix = {}
vmatrixnum = 0
current = 0

function bang()
	current = current + 1
	if (current > vmatrixnum) then
		current = 1
	end
	if (vmatrixnum > 0) then
		outlet(0, "jit_matrix", vmatrix[current].name)
	end
end

function play(i)
	if (i <= vmatrixnum) then
		outlet(0, "jit_matrix", vmatrix[i].name)
	end
end

function read(a)
	local temp = vmatrixnum + 1
	vmatrix[temp] = jit.matrix(4, "char", 320, 240)
	vmatrix[temp].adapt = 1
	vmatrix[temp]:importmovie(a)
	vmatrixnum = temp
end

function path(b)
	vmatrixnum = 0
	current = 0
	vmatrix = {}
	vpath = b
end

function readfolder(c)
	local temp = vmatrixnum + 1
	vmatrix[temp] = jit.matrix(4, "char", 320, 240)
	vmatrix[temp].adapt = 1
	vmatrix[temp]:importmovie(vpath..c)
	vmatrixnum = temp
end

function clear()
	vmatrixnum = 0
	current = 0
	vmatrix = {}
end


Max patch:

#P window setfont "Sans Serif" 9.;
#P window linecount 1;
#P message 90 140 33 196617 clear;
#P newex 310 93 39 196617 r slide;
#N vpatcher 457 209 884 558;
#P window setfont "Sans Serif" 9.;
#P window linecount 0;
#P newex 75 233 51 196617 tosymbol;
#P hidden newex 318 245 39 196617 s slide;
#P hidden message 318 221 83 196617 setminmax 1 \$1;
#P newex 209 115 48 196617 loadbang;
#P window linecount 1;
#P newex 75 268 68 196617 prepend read;
#P window linecount 0;
#P newex 75 121 38 196617 gate 2;
#P window linecount 1;
#P newex 180 84 21 196617 t 2;
#P window linecount 0;
#P newex 151 84 21 196617 t 1;
#P newex 151 54 69 196617 sel JPEG fold;
#P inlet 151 28 15 0;
#P window linecount 1;
#P newex 257 242 51 196617 tosymbol;
#P newex 257 269 67 196617 prepend path;
#P newex 152 241 51 196617 tosymbol;
#P newex 152 180 37 196617 folder;
#P newex 152 151 27 196617 t l l;
#P newex 152 211 67 196617 route append;
#P message 209 148 61 196617 types JPEG;
#P newex 152 268 95 196617 prepend readfolder;
#P inlet 103 27 15 0;
#P outlet 152 299 15 0;
#P connect 12 0 14 0;
#P connect 13 0 14 0;
#P connect 14 0 19 0;
#P connect 19 0 15 0;
#P connect 1 0 14 1;
#P connect 10 0 11 0;
#P connect 11 0 12 0;
#P connect 14 1 5 0;
#P connect 3 0 6 0;
#P connect 5 0 6 0;
#P connect 6 0 4 0;
#P connect 4 0 7 0;
#P connect 7 0 2 0;
#P fasten 8 0 0 0 262 291 157 291;
#P connect 2 0 0 0;
#P connect 15 0 0 0;
#P connect 11 1 13 0;
#P connect 16 0 3 0;
#P connect 5 1 9 0;
#P connect 9 0 8 0;
#P connect 6 1 17 0;
#P hidden connect 17 0 18 0;
#P pop;
#P newobj 34 139 43 196617 p parse;
#P comment 328 126 92 196617 3. - shuffle manual;
#P user multiSlider 199 118 125 28 1. 20. 1 2664 47 0 0 2 0 0 0;
#M frgb 0 0 0;
#M brgb 255 255 255;
#M rgb2 127 127 127;
#M rgb3 0 0 0;
#M rgb4 37 52 91;
#M rgb5 74 105 182;
#M rgb6 112 158 18;
#M rgb7 149 211 110;
#M rgb8 187 9 201;
#M rgb9 224 62 37;
#M rgb10 7 114 128;
#P message 199 152 44 196617 play \$1;
#P comment 155 94 132 196617 2 - turn on metro to shuffle;
#P user jit.pwindow 104 266 322 242 0 1 0 0 1 0;
#P user jit.fpsgui 34 250 60 196617 0;
#P newex 34 180 64 196617 prepend call;
#P toggle 136 92 15 0;
#P newex 136 122 57 196617 qmetro 20;
#P newex 34 205 167 196617 jit.gl.lua movie @file es.matrix.lua;
#P comment 122 66 174 196617 1. - drop folder or jpeg images here;
#P comment 297 206 37 196617 (())_n;
#P user dropfile 34 52 113 118 1;
#P connect 3 0 7 0;
#P fasten 3 0 8 0 39 233 110 233;
#P connect 11 0 10 0;
#P fasten 14 0 11 0 315 114 204 114;
#P connect 5 0 4 0;
#P fasten 0 1 13 1 108 128 72 128;
#P connect 6 0 3 0;
#P connect 13 0 6 0;
#P fasten 10 0 6 0 204 169 39 169;
#P fasten 4 0 6 0 141 169 39 169;
#P fasten 15 0 6 0 95 169 39 169;
#P connect 0 0 13 0;
#P window clipboard copycount 16;