Difference between revisions of "Camera.takePicture"
From GiderosMobile
| Line 23: | Line 23: | ||
=== <translate>Return values</translate> === | === <translate>Return values</translate> === | ||
'''<translate>Returns</translate>''' (number) <translate>False if an error occured</translate><br/> | '''<translate>Returns</translate>''' (number) <translate>False if an error occured</translate><br/> | ||
| + | |||
| + | === <translate>Examples</translate> === | ||
| + | '''Example'''<br/> | ||
| + | <source lang="lua">require "camera" | ||
| + | local cw,ch=512,512 --Preview requested size | ||
| + | local pw,ph=8192,8192 -- Request a very large picture, os will give us what it can do at best | ||
| + | Camera.texture=RenderTarget.new(cw,ch,true) | ||
| + | cw,ch,pw,ph=Camera.start(Camera.texture,dev,pw,ph) | ||
| + | print("Using Camera Size:",cw,ch, "Picture:",pw,ph) | ||
| + | |||
| + | Core.asyncCall(function() | ||
| + | Core.yield(1) --Wait one second | ||
| + | Camera.setFlash(2) --Enable flash | ||
| + | Camera.onEvent=function(evt,data) | ||
| + | print("Event:",evt,"Data:",#data) | ||
| + | end | ||
| + | print("takePic",Camera.takePicture()) | ||
| + | Camera.setFlash(0) --Set back flash to auto | ||
| + | end) | ||
| + | </source> | ||
{{Camera}} | {{Camera}} | ||
Revision as of 15:18, 18 August 2021
Available since: Gideros 2021.8
Class: camera
Description
Take a picture.
This function must be called while preview is active, that is Camera.start() has been called.
If it returns true, then the platform will asynchronously take a picture from the Camera (eventually using flash) then call Camera.onEvent callback one or more times.
It is your responsability to define Camera.onEvent before calling Camera.takePicture().
Camera.onEvent function takes two arguments:
- a number, indicating the type of event
- a data buffer (string) depending on the event type
Event types are:
- 0: shutter sound is triggered, data is empty (if supported)
- 1: uncompressed image ready, data contains the uncompressed image (android only, optional)
- 2: jpeg image ready, data contains jpeg image. This event is always fired if takePicture() was successful
(boolean) = camera.takePicture()
Parameters
Return values
Returns (number) False if an error occured
Examples
Example
require "camera"
local cw,ch=512,512 --Preview requested size
local pw,ph=8192,8192 -- Request a very large picture, os will give us what it can do at best
Camera.texture=RenderTarget.new(cw,ch,true)
cw,ch,pw,ph=Camera.start(Camera.texture,dev,pw,ph)
print("Using Camera Size:",cw,ch, "Picture:",pw,ph)
Core.asyncCall(function()
Core.yield(1) --Wait one second
Camera.setFlash(2) --Enable flash
Camera.onEvent=function(evt,data)
print("Event:",evt,"Data:",#data)
end
print("takePic",Camera.takePicture())
Camera.setFlash(0) --Set back flash to auto
end)
