Github user purplecabbage commented on a diff in the pull request:
https://github.com/apache/cordova-plugin-camera/pull/111#discussion_r36225312
--- Diff: src/windows/CameraProxy.js ---
@@ -696,21 +696,22 @@ function
takePictureFromCameraWindows(successCallback, errorCallback, args) {
// decide which max pixels should be supported by targetWidth or
targetHeight.
var maxRes = null;
var UIMaxRes = WMCapture.CameraCaptureUIMaxPhotoResolution;
+ var totalPixels = targetWidth * targetHeight;
switch (true) {
- case (targetWidth >= 1280 || targetHeight >= 960) :
- cameraCaptureUI.photoSettings.maxResolution = UIMaxRes.large3M;
+ case (totalPixels <= 320 * 240):
+ cameraCaptureUI.photoSettings.maxResolution =
UIMaxRes.verySmallQvga;
break;
- case (targetWidth >= 1024 || targetHeight >= 768) :
- maxRes = UIMaxRes.mediumXga;
+ case (totalPixels <= 640 * 480):
+ maxRes = UIMaxRes.smallVga;
break;
- case (targetWidth >= 800 || targetHeight >= 600) :
+ case (totalPixels <= 1024 * 768):
maxRes = UIMaxRes.mediumXga;
break;
- case (targetWidth >= 640 || targetHeight >= 480) :
- maxRes = UIMaxRes.smallVga;
+ case (totalPixels <= 3 * 1000 * 1000):
+ maxRes = UIMaxRes.large3M;
break;
- case (targetWidth >= 320 || targetHeight >= 240) :
- maxRes = UIMaxRes.verySmallQvga;
+ case (totalPixels <= 5 * 1000 * 1000):
+ maxRes = UIMaxRes.veryLarge5M;
break;
default :
maxRes = UIMaxRes.highestAvailable;
--- End diff --
Yes, the 'faster' argument is not particularly strong in this case
considering how often it will be called.
My team is hiring!
@purplecabbage
risingj.com
On Tue, Aug 4, 2015 at 8:08 AM, Rob Paveza <[email protected]> wrote:
> In src/windows/CameraProxy.js
>
<https://github.com/apache/cordova-plugin-camera/pull/111#discussion_r36199186>
> :
>
> > break;
> > - case (targetWidth >= 320 || targetHeight >= 240) :
> > - maxRes = UIMaxRes.verySmallQvga;
> > + case (totalPixels <= 5 * 1000 * 1000):
> > + maxRes = UIMaxRes.veryLarge5M;
> > break;
> > default :
> > maxRes = UIMaxRes.highestAvailable;
>
> switch(true) would only be faster in the event that your cases were
> constants and you were doing explicit equality checks (e.g., case 10:).
> They're not, though, and because you're using greater-than comparisons,
you
> lose the ability of the runtime compiler to optimize using jump-tables. If
> we're really concerned about perf, I'd suggest adding profiling code to
> order the most-common to the least-common cases; but I think this code
will
> run so infrequently, it's not a perf-critical path.
>
> â
> Reply to this email directly or view it on GitHub
> <https://github.com/apache/cordova-plugin-camera/pull/111/files#r36199186>
> .
>
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