IPCamDriver with Android IP WebCam app

[neilyoung]

Works - kind of.
The frame rate is decent, pretty good. Usually I'm having about 25 "debug repaints" per second (is this kind of "fps"?)

EDIT: Delay very, very small. Great

But sometimes the image stutters for several ms. That time the debug display shows "200 debug repaints" or so, a big number.

The original browser based app doesn't have that problem. Any chance to approach?

EDIT: It is stuck, if the scene is changing quickly. Maybe a clue.

Regards

[neilyoung]

No, much better. It is getting stuck every 5 secs. Some timer running?

[neilyoung]

@sarxos Do you remember, when I asked you, if it is possible to access the buffered image as like with an ordinary cam? I think to remember, you have confirmed that.

But it doesn't work:

Exception in thread "Thread-32" java.lang.IllegalStateException: Driver com.github.sarxos.webcam.ds.ipcam.IpCamDriver does not support buffer access
	at com.github.sarxos.webcam.Webcam.getImageBytes(Webcam.java:734)
	at com.myCompany.myApp.Capture.run(CameraAPI.java:33)

This is the response to

webCam.getImageBytes()

Pointer welcome

[neilyoung]

Disregard. Found alternatives

[sarxos]

Hi @neilyoung,

Yes I remember this discussion and indeed I confirmed this to be possible. Obviously I was wrong :( Sorry for misleading you.

Will fix this.

[neilyoung]

@sarxos No prob. Found an older post here which suggested to patch IPCamDriver. Did that. Works

[sarxos]

@neilyoung Cool :) Before I read your last comment I did this as well, but the change is not tested. You may take a look and decide which one performs better. I did not test this in any way so it can be laggy or not working. In this case I'm open for suggestions and/or pull requests.

[neilyoung]

@sarxos Well, my "solution" is a bit different. I was not going the detour via the image again, but using the "frame" byte[] produced earlier. This incorporates more changes, though

[sarxos]

@neilyoung, but isn't the frame a BufferedImage image instance? In the code I see:

webcam-capture/webcam-capture-drivers/driver-ipcam/src/main/java/com/github/sarxos/webcam/ds/ipcam/IpCamDevice.java

Line 97 in abaf107

if ((tmp = stream.readFrame()) != null) {

The image variable is returned when you invoke getImage(). Therefore to have byte[] data you still have to detour via the image.

Or are you maybe referring to frame variable from IpCamMJPEGStream?

webcam-capture/webcam-capture-drivers/driver-ipcam/src/main/java/com/github/sarxos/webcam/ds/ipcam/impl/IpCamMJPEGStream.java

Line 101 in abaf107

byte[] frame = null;

But in this case you have to note that this byte[] array is not an RGB24, but a JPEG frame.

[neilyoung]

@sarxos I see. You are right. Will switch to your solution. Thanks

[neilyoung]

@sarxos OK, works fine. When do you plan to publish it?

[sarxos]

@neilyoung I can roll SNAPSHOT right now.

[sarxos]

@neilyoung

I just deployed SNAPSHOT to Sonatype Maven repository.

This is repository to add into POM:

<repository>
	<id>Sonatype OSS Snapshot Repository</id>
	<url>http://oss.sonatype.org/content/repositories/snapshots</url>
</repository>

And dependency:

<dependency>
	<groupId>com.github.sarxos</groupId>
	<artifactId>webcam-capture-driver-ipcam</artifactId>
	<version>0.3.12-SNAPSHOT</version>
</dependency>

If you do not use Maven but manage your JARs manually then please let me know. I will zip required files and put them here.

[neilyoung]

@sarxos I see all the capture drivers there, but I don't see a webcam-capture snapshot.

[sarxos]

@neilyoung Oh, there is (webcam-capture-0.3.12-20180116.162525-8.jar):

https://oss.sonatype.org/content/repositories/snapshots/com/github/sarxos/webcam-capture/0.3.12-SNAPSHOT/

[sarxos]

@neilyoung Here are all required JARs: target.zip

[neilyoung]

Hmm. ok. seems to be not used by Intellij

Thanks for the zip... Will use that.

[neilyoung]

@sarxos Problem is, that a coworker is also depending on it and I would rather like to let him do the Maven stuff instead of asking him to replace two JARs... .Would be great if there could be an official 0.3.12 asap

[sarxos]

Hi @neilyoung,

I spent whole yesterday's evening working on this, but finally, after several failed attempts, I was able to roll new official release, that is the 0.3.12. 🎉

The artifacts I deployed yesterday are available already in Maven Central:

And the ZIP bundles are available from my private repository:

[neilyoung]

@sarxos Wow, you are my hero. Thanks for your patience with this project. Very much appreciated.

[sarxos]

@neilyoung The pleasure is mine :) Feel free to open new issue in case of further problems or questions. I'm closing this one.