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local im = require "imlua"
require "imlua_capture"
local gl = require "luagl"
local iup = require "iuplua"
require "iupluagl"
local vc = im.VideoCaptureCreate()
if (not vc) then
error("ERROR: No capture device found!")
end
if (vc:Connect(0) == 0) then
error("ERROR: Fail to connect to capture device")
end
local capw, caph = vc:GetImageSize()
local initimgsize = string.format("%ix%i", capw, caph)
local frbuf = im.ImageCreate(capw, caph, im.RGB, im.BYTE)
local gldata, glformat = frbuf:GetOpenGLData()
cnv = iup.glcanvas{buffer="DOUBLE", rastersize = initimgsize}
function cnv:resize_cb(width, height)
iup.GLMakeCurrent(self)
gl.Viewport(0, 0, width, height)
end
function cnv:action(x, y)
iup.GLMakeCurrent(self)
gl.PixelStore(gl.UNPACK_ALIGNMENT, 1)
gldata, glformat = frbuf:GetOpenGLData() --update the data
gl.DrawPixelsRaw (capw, caph, glformat, gl.UNSIGNED_BYTE, gldata)
iup.GLSwapBuffers(self)
end
vc:Live(1)
local dlg = iup.dialog{title = "Oh Snap!", cnv}
local in_loop = true
function dlg:close_cb()
in_loop = false
end
function dlg:k_any(c)
if c == iup.K_q or c == iup.K_ESC then
return iup.CLOSE
end
if c == iup.K_F1 then
if fullscreen then
fullscreen = false
dlg.fullscreen = "No"
else
fullscreen = true
dlg.fullscreen = "Yes"
end
iup.SetFocus(cnv)
end
end
dlg:show()
iup.SetFocus(cnv)
while in_loop do
vc:Frame(frbuf,-1)
iup.Update(cnv)
local result = iup.LoopStep()
if result == iup.CLOSE then
in_loop = false
end
end
vc:Live(0)
vc:Disconnect()
vc:Destroy()
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