I'm trying to implement tap to focus on a Samsung Xcover4 for an industrial application (specific to this device).
The idea is to have the device stuffed into a kind of box with a hole where the camera is, and to use it to scan cards with qr codes on it.
So the "scan zone" is always the same, and should be set when the app start with a tap. Once it's done, camera should always focus on that zone and compute exposure on that spot
I'm using Xzing library, so I hacked the CameraManager manager class a little and it's working ok for the fixed focus zone.
I found the "spot" metering value by dumping native camera parameters, but one thing I can't figure out is how to set its position. I guess it can be done, since samsung does it in the native camera app.
ArrayList<Camera.Area> focusAreas = new ArrayList<Camera.Area>();
focusAreas.add(new Camera.Area(focusArea, 1000));
cameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
cameraParameters.setFocusAreas(focusAreas);
cameraParameters.setMeteringAreas(focusAreas);
cameraParameters.setZoom(0);
cameraParameters.set("metering", "spot");
camera.setParameters(cameraParameters);
camera.autoFocus(autoFocusManager);
Below is the list of natvie camera paremeters.
3dnr=false;
Infinity=Infinity;
antibanding=50hz;
antibanding-values=auto,50hz;
auto-exposure-lock-supported=true;
auto-whitebalance-lock-supported=true;
best-capture=0;
brightness=0;
brightness-max=2;
brightness-min=-2;
burst-capture=0;
burstshot-fps-values=(4,4);
constant-growth-rate-zoom-supported=true;
contrast=auto;
drc=false;
dual_mode=-1;
dualrecording-hint=-1;
dynamic-range-control=off;
effect=none;
effect-available-fps-values=(10000,15000);
effect-values=none,mono,negative,sepia,posterize;
effectrecording-hint=0;
exposure-compensation=0;
exposure-compensation-step=0.1;
fast-fps-mode=-1;
flash-mode=off;
flash-mode-values=off,auto,on,torch;
fnumber-value-denominator=10;
fnumber-value-numerator=19;
focal-length=3.70;
focallength-35mm-value=28;
focallength-value-denominator=100;
focallength-value-numerator=370;
focus-areas=(257,416,263,422,1000);
focus-distances=0.10,1.20,Infinity;
focus-mode=auto;
focus-mode-values=auto,macro,continuous-video,continuous-picture;
hdr-mode=0;
horizontal-view-angle=62.2;
hue=0;
hue-max=2;
hue-min=-2;
imageuniqueid-value=V13LLIA02PM V13LLKB16SA
;
intelligent-mode=-1;
iso=auto;
iso-values=auto,100,200,400,800;
jpeg-quality=96;
jpeg-thumbnail-height=384;
jpeg-thumbnail-quality=100;
jpeg-thumbnail-size-values=512x384,512x288,384x384,320x240,0x0;
jpeg-thumbnail-width=512;
max-exposure-compensation=20;
max-num-detected-faces-hw=16;
max-num-detected-faces-sw=0;
max-num-focus-areas=1;
max-num-metering-areas=0;
max-zoom=30;
maxaperture-value-denominator=100;
maxaperture-value-numerator=185;
metering=center;
metering-areas=;
metering-values=matrix,center,spot;
min-exposure-compensation=-20;
odc=false;
phase-af=off;
phase-af-values=off;
picture-format=jpeg;
picture-format-values=jpeg;
picture-size=4128x3096;
picture-size-values=4128x3096,4128x2322,3264x2448,3264x1836,3088x3088,2160x2160,2048x1536,2048x1152,1920x1080,1440x1080,1280x720,960x720,640x480,320x240;
preferred-preview-size-for-video=1280x720;
preview-format=yuv420sp;
preview-format-values=yuv420sp,yuv420p;
preview-fps-range=15000,30000;
preview-fps-range-values=(15000,15000),(24000,24000),(15000,30000),(30000,30000);
preview-frame-rate=30;
preview-frame-rate-values=15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30;
preview-size=1280x720;
preview-size-values=1280x720,1056x704,960x720,880x720,720x720,720x480,640x480,352x288,320x240,176x144;
rotation=0;
rt-hdr=off;
rt-hdr-values=off;
saturation=0;
saturation-max=2;
saturation-min=-2;
scene-mode=auto;
scene-mode-values=auto,action,portrait,landscape,night,night-portrait,theatre,beach,snow,sunset,steadyphoto,fireworks,sports,party,candlelight;
sharpness=0;
sharpness-max=2;
sharpness-min=-2;
smooth-zoom-supported=false;
vertical-view-angle=39.4;
video-frame-format=nv21;
video-size=1920x1080;
video-size-values=1920x1080,1440x1080,1072x1072,1280x720,960x720,800x450,720x480,640x480,480x320,352x288,320x240,176x144;
video-snapshot-supported=true;
video-stabilization-supported=false;
vrmode=-1;
wdr=0;
whitebalance=auto;
whitebalance-values=auto,incandescent,fluorescent,daylight,cloudy-daylight;
zoom=0;
zoom-ratios=100,104,109,114,120,125,131,138,144,151,158,166,174,182,190,200,209,219,229,240,251,263,276,289,303,317,332,348,364,381,400;
zoom-supported=true
Thank you.
I am using an input processor for touchinput on a flappy bird like game. This works fine on my droid turbo, and a couple other newer phones. But with my two older tables, a xoom, and verizon tablet, touchDown occasionally doesn't fire. I should mention that the FPS is 60 throughout gameplay. Also, I use an inputMultiplexer which adds both the playerInput and hud/play stages. Could this just be a problem with older android? Any fix? I am sure it's not my code for the fact that it works on newer phones.
EDIT
I tried using Gdx.input.isTouched like so :
if(Gdx.input.isTouched()){
if(!touched){
jump();
}
touched = true;
} else{
touched = false;
}
But it gives me the same results as input processor :\
This is not a problem with the jump method, as of right now it just prints "touched" to the console.
it is the issue with the viewPort. that is the different phone has different screen size. please check the below link which will help you
http://stackoverflow.com/questions/39810169/libgdx-text-not-rendering-properly-on-larger-screens/39946652#39946652
I'm developing an Android application with a camera-related functionality feature.
First of all, I read a lot of stuff on SO, XDA and so on, then please don't redirect me to other useless posts.
I am trying to implement something like a "fixed focus mode", so that:
I start my application with FOCUS_MODE_AUTO (or something else);
bring into focus an object at an arbitrary distance;
fix the current focus;
move the camera on another object at a different distance which is out of focus.
I tried different solutions, i.e.:
mCamera.cancelAutoFocus() in the AutoFocusCallback to prevent the adjustment of the focus;
set a FocusArea: new Camera.Area(new Rect(-50, -50, 50, 50), 1000) to fix the focus on the current area.
I'm targeting API 20 and I'm working on a Samsung Galaxy S5. On this device, the supported focus modes are:
- auto
- infinity
- macro
- continuous-video
- continuous-picture
The suggestion that I found more frequently is to recompile Android...
"AUTO" mode doesn't mean that the camera continuously focuses - just that when you call the autoFocus command the focus is done automatically with no indication on what result you expect not like "Macro" or "Infinity".
http://developer.android.com/reference/android/hardware/Camera.html#autoFocus(android.hardware.Camera.AutoFocusCallback)
So if you don't have a loop that calls the autoFocus (as many examples do or call it again in the Callback) your focus should stay after it runs once.
If I understand, you want to focus keep the focus of the first object.
Have you tried to change the camera mode to FOCUS_MODE_FIXED after you focus the first object ?
Like that :
Camera.Parameters mParam = mCamera.getParameters();
mParam.setFocusMode(Camera.Parameters.FOCUS_MODE_FIXED);
mCamera.setParameters(mParam);
I have built and installed HelloSensor sample app on my Android/SmartWatch2 devices.
After commenting //sensor.getType().getName().equals(Registration.SensorTypeValue.MAGNETIC_FIELD)
to avoid accelerometer values display to be scratched by magnetic field values display, I was very happy with the result: I clearly saw the expression of "SW2 acceleration - gravity" displayed on my SmartWatch (clearly seeing ~(0, 0, 9.8) when the watch is layed down on a table, and ~(0, 9.8, 0) when I hold the SW vertically).
My problem is that, today, whatever orientation I give to my SmartWatch, values do not change anymore => ~(0, 0, 9.8) is always displayed, even if I hold the SW vertically.
Since it worked fine at first, I wonder if my sensor is not "broken". How can I check this?
Did you try restarting and/or resetting your SW2? Also you can try unpairing/repairing the watch with the phone.
If it still isn't working, not sure there is much you can do to check the sensor otherwise. If your watch is still under warranty would suggest sending it in for repairs.
I am working on an app that will allow a user to take quick click and forget snapshots. Most of the app is done except for the camera working that way I would like. Right now I have the camera working but I can't seem to find a way to disable the shutter sound and I cant find a way to disable displaying the preview. I was able to cover the preview up with a control but I would rather just not have it displayed if possible.
To sum things up, these are the items that I would like to disable while utilizing the built in Camera controls.
Shutter sound
Camera screen display
Image preview onPictureTaken
Does anyone know of a resource that could point me in the right direction, I would greatly appreciate it. I have been following CommonsWare's example from this sample fairly closely.
Thank you.
This is actually a property in the build.prop of a phone. I'm unsure if its possible to change this. Unless you completely override it and use your own camera code. Using what you can that is available in the SDK.
Take a look at this:
CameraService.cpp
. . .
CameraService::Client::Client(const sp<CameraService>& cameraService,
const sp<ICameraClient>& cameraClient,
const sp<CameraHardwareInterface>& hardware,
int cameraId, int cameraFacing, int clientPid) {
mPreviewCallbackFlag = FRAME_CALLBACK_FLAG_NOOP;
mOrientation = getOrientation(0, mCameraFacing == CAMERA_FACING_FRONT);
mOrientationChanged = false;
cameraService->setCameraBusy(cameraId);
cameraService->loadSound();
LOG1("Client::Client X (pid %d)", callingPid)
}
void CameraService::loadSound() {
Mutex::Autolock lock(mSoundLock);
LOG1("CameraService::loadSound ref=%d", mSoundRef);
if (mSoundRef++) return;
mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg");
mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg");
}
As can be noted, the click sound is started without your interaction.
This is the service used in the Gingerbread Source code.
The reason they DON'T allow this is because it is illegal is some countries. Only way to achieve what you want is to have a custom ROM.
Update
If what being said here: http://androidforums.com/t-mobile-g1/6371-camera-shutter-sound-effect-off.html
still applies, then you could write a timer that turns off the sound (Silent Mode) for a couple of seconds and then turn it back on each time you take a picture.
You may use the data from the preview callback using a function to save it at a picture on some type of trigger such as a button, using onclick listener. you could compress the image to jpeg or png. In this way, there no shutterCallback to be implemented. and therefore you can play any sound you want or none when taking a picture.
You can effectively hide the preview surface by giving it dimensions of 1p in the xml file (I found an example the said 0p but for some reason that was giving me errors).
It may be illegal to have a silent shutter in some places, but it doesn't appear that the US is such a place, as my HTC One gives me an option to silence it, and in fact, since Android 4.2 you can do this:
Camera.CameraInfo info=new Camera.CameraInfo();
if (info.canDisableShutterSound) {
camera.enableShutterSound(false);
}