SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

By masonhsiung on Tue, 11/20/2012 - 16:57

Hi,

I run into a very weird problem that SurfaceTexture fails to update the video data to opengl texture(GL_TEXTURE_EXTERNAL_OES).

I actually took the code from VideoPlayback sample, and make it be able to dynamically load different number of videos(played on targets)

This problem happens in this case.

1. First time I open up the camera and load let's say 1 target/video(which uses one texture, assuming the texture ID is 6), then leave camera, which destroys the Activity(I think the opengl surface should also be destroyed.)

2. Open up the camera again, and this time we load 2 targets/videos(which uses two textures, assuming the texture ID 1 for video A, 2 for video B)

3. Video A plays nicely, but when we start to play video B, it crashes due to the failure of updateTexImage. The exception stack is below.

---------

11-21 00:52:21.177: E/SurfaceTexture(8122): error binding external texture image 0x567fb0 (slot 0): 0x502

11-21 00:52:21.177: W/System.err(8122): java.lang.RuntimeException: Error during updateTexImage (see logs)

11-21 00:52:21.177: W/System.err(8122): at android.graphics.SurfaceTexture.updateTexImage(SurfaceTexture.java:164)

11-21 00:52:21.177: W/System.err(8122): at xxxxxxx.VideoPlayerHelper.updateVideoData(VideoPlayerHelper.java:602)

11-21 00:52:21.177: W/System.err(8122): at xxxxxxx.ARViewRenderer.onDrawFrame(ARViewRenderer.java:464)

11-21 00:52:21.177: W/System.err(8122): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1462)

11-21 00:52:21.177: W/System.err(8122): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1216)

-------- This problem only happens on Samsung Galaxy S2, it runs nicely on HTC J, HTC One S, Sharp SH530U...Could someone tell me why? I have no clue for this issue.....Thanks.

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

Hi, can you put a Log in the call to "glGenTextures(1, &videoPlaybackTextureID[i]);" in the _initRendering function, to see if the glGenTexture is called also the second time ? mayeb also print out the values of the textures.

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

Hi, sorry there is some typo in the post, "texture ID 1 for video A, 2 for video B)" is wrong, it should be "

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

OK, I see the texture IDs look good.

You say "open the camera"; what do you mean exactly ? do you pause/resume the app, or do you stop and restart the QCAR camera device ?

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

Yes, what I mean "open the camera" is restarting the QCAR camera.

and ...

- is the onPause and onResume called (in the Java activity) ?

Yes.

- is the _initRendering native function called the second time (when you "re-open the camera") ?

Yes.

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

OK, that indeed looks very odd.

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

I don't see bindVideoBackgroundTexture() from the _renderFrame() method, actually I don't see in my whole project...

I am not actually that familiar with OpenGL stuff, so removing all QCAR dependencies from my project is gonna take a while...

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

Hi, the function I was referring to is called drawVideoBackground() (not bindVideoBackground());

it is in the _renderFrame() function in native (C++) code.

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

Hi, as you suggested, I remove drawVideoBackground() in _renderFrame(), and this problem disappears!

Apparently it looks like that drawVideoBackground() causes this problem.. Is there any quick fix or workaround for this?

Thanks!

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

Hi, I found a similar problem and it's on other devices(HTC One S/Sharp SH530U), black texture appears(if previous QCAR camera device initialized 6 textures, and the black texture ID is 8, ), and once I remove drawVideoBackground() from _renderFrame(), the texture will showup normally.

OK, so, can you summarize the

OK, so, can you summarize the list of devices where this occurs (black texture and/or crashing)

and for each device, the exact model and Android version ?

I will then check internally with the engineering team to see what could be the issue.

Hi, after integrating vuforia

Hi, after integrating vuforia SDK 2.0, this issue seems no longer existing.

It runs pretty ok now.

Thanks for your reply, I will do more test to see if this issue is still there or not.

Thanks again! :)

SurfaceTexture fails to "updateTexImage"(on Samsung Galaxy S2)

You're welcome!

I'm really glad to hear that 2.0 has fixed it.

Actually I just checked with our engineering team and they confirmed me that there was a little/subtle issue with background texture binding, which is now indeed completely solved in Vuforia 2.0.