iCamera | well designed camera library for Android platform | Camera library
kandi X-RAY | iCamera Summary
kandi X-RAY | iCamera Summary
A well designed camera library for Android platform with almost all features you require when making a camera app.
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iCamera Examples and Code Snippets
Community Discussions
Trending Discussions on iCamera
QUESTION
I have an IP Camera that ships with it's own library. It's methods are all synchronous and they look like this.
This is so that there are no race conditions, i.e. I cannot call GetImage() while Configure() is running. Note that a few of these methods take a few seconds to complete.
...ANSWER
Answered 2021-Mar-20 at 02:01The .NET Timer class has a feature that will provide periodic events with locking on a specific object. See Microsoft's example.
It is syntactic sugar for using your own locks with the thread pool. It will not guarantee that the each interval event is run on the same thread, but it will guarantee that each event is handled one at a time.
If you want finer control or a guarantee of running on a single thread I would create a thread and use a Stopwatch to determine how much time elapsed for setting your next thread timeout.
QUESTION
In .NET WinForms I built a map control so I can plot geometry and render satellite images. As in any 2D projection, the geographic coordinates are mapped to 2D surface. But as you zoom IN, you notice that the resulting 2D coordinates get to the order of Millions of Units as you move to higher latitude and longitude values.
Problem:The way you can pan/zoom at large pictures such as in a map, is translating the drawing surface using a transformation matrix. The GDI+ uses float
for internal calculations (as far you can tell by the .NET System.Drawing
namespace). The issue is that when your float
grows to millions, you lose your decimal places precision, and things starts to get weird. Even though the screen works in a discrete integral type (multiples of 1 pixel) rendering operations and transformation still need to use float
math.
ANSWER
Answered 2020-Aug-11 at 20:51Managing geodedic coordinates requires double-precision math, otherwise you'll loose precision with (projected) high coordinate magnitude values.
I wonder which map projection you use. Normally, projection models requires a projection center, which it is the projection plane origin (0, 0). Setting the projection center to the coordinate of the current map view make projected coordinates values lower in their magnitude (since they are near to the projection center).
Change the projection center each time the map is recentered, and you'll need double precision only at lowest zoom levels.
QUESTION
I have a Raspberry Pi camera which has a 'best resolution' of 1080p according to the specs
I have a small script which doesn't achieve anything apart from changing some settings.
...ANSWER
Answered 2019-Feb-23 at 15:46camera.resolution
should be set to a tuple with two integers:
QUESTION
I've been trying to pass the image from gallery
or from camera
to another activity but they don't work properly. If the image from the gallery will work then the image from camera won't work and vice versa. Please help me fix my code. Here are my code for the MainActivity and for the SecondActivity. Thank you!
MainActivity.java
...ANSWER
Answered 2018-Nov-18 at 05:50Try this it is working fine for me.
QUESTION
I have the following TypeScript code:
...ANSWER
Answered 2018-Jun-14 at 19:31It looks like pickBy
is typed to return a new object which may or may not contain the properties of the original object, which is what Partial
does. A simpler example:
QUESTION
I am applying the Service Locator pattern as described in Game Programming Patterns, and am wondering about a possible generic implementation. The following code does work, but I am confused about using a class that is both generic and static.
The idea of the following C# code is to provide a "global" service to other parts of the application, exposing only an interface rather than the full implementation. Each service registered using this method will only have one instance in the application, but I want to be able to easily swap in/out different implementations of the provided interfaces.
My question is: when I use the following class to provide different services throughout my application, how does C# know that I am referring to different services of different types? Intuitively, I would almost think that the static variable, _service
, would be overridden with each new service.
ANSWER
Answered 2017-Jul-04 at 18:01C# creates a separate closed type for every combination of generic parameters for open type.
Since every combination of generic parameters creates a separate class, calling a static constructor and creating own members for each of them.
You can think of them like of different classes.
QUESTION
I have an abstract class like this:
...ANSWER
Answered 2017-May-22 at 20:27because since this is an abstract class, only the concrete children classes must choose a
TCamera
That's not how generics work. This has nothing at all to do with the class being abstract
. If the class was generic and not abstract you would still need to specify a generic argument in order to call a static method of the class. On top of that, there's nothing to say that a child class can't also be generic. Yours may happen to not be, but there's nothing requiring that to be the case.
Now, in your particular case, the GetNumberOfCameras
method doesn't use the generic argument (T
) at all, so it doesn't matter what generic argument you provide, you can put in whatever you want and it'll work just fine. Of course, because of that, it's a sign that this method probably doesn't belong in this class; it should probably be in another class that this class also uses.
QUESTION
I'm getting: android.os.FileUriExposedException.
...When targeting Android N, file:// URIs are not allowed anymore. I know We should use content:// URIs instead. However, my app needs file for both image and video. Any ideas?
ANSWER
Answered 2017-Mar-16 at 19:18After some research finally got relevant answer to my question just set min target sdk version to 23.
QUESTION
I am trying to implement shared logic using COM aggregation with ATL. I've defined a base class, called CameraBase
, that is only available through aggregation. Therefor I've added the aggregateable
annotation to it's coclass
-declaration.
ANSWER
Answered 2017-Jan-12 at 14:16An aggregatable COM object provides two distinct implementations of IUnknown
- non-delegating and delegating.
The non-delegating implementation is the "normal" one - its QueryInterface
hands out interfaces implemented by the aggregatable object, and its AddRef
and Release
control the lifetime of that object.
The delegating implementation, as the name suggests, delegates all three method calls to the controlling IUnknown
of the outer object. All the other interfaces implemented by the object have their three IUnknown
methods backed by this delegating implementation. This is how the aggregation can maintain an illusion for the client that it's dealing with a single COM object - it allows the client to query from an interface implemented by the outer to one implemented by the inner, and (more interestingly) vice versa. Recall that it's a requirement for IUnknown
that QueryInterface
implementation be symmetrical and transitive.
When CoCreateInstance
is called with non-NULL controlling unknown parameter, it must request IUnknown
from the inner object - that is the outer's one and only chance to obtain a non-delegating implementation. You cannot use any other interface pointer from the inner in the outer's interface map - again, all other interfaces are backed by a delegating unknown, so forwarding QueryInterface
call to them would end up calling QueryInterface
on the outer, and end up right back in the interface map, leading to an infinite recursion.
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