shanerodrigues/compose-uvc-camera

Basic functionality for UVC Cameras on Android with Kotlin and Jetpack Compose.

Compose-UVC-Camera

Basic functionality for UVC Cameras on Android with Kotlin and Jetpack Compose.

The demo demonstrates how to initialise a preview and capture an image. For more information refer to the documentation at AndroidUSBCamera by jiangdongguo.

Based on AndroidUSBCamera by jiangdongguo v2.3.8

Tested on Android 9, Compose v1.2.0

compose-uvc-camera's Issues

Error for savepath

Hi,

Thanks for the repo it's potentially really useful. I am having an issue with the savepath, getting the following error on the log. Apologies if this is a trivial fix (I'm new to this!) but could you advise how to change the path. I don't need to store the photo outside of the app so using the app's own internal storage is fine. Thanks for any help you can offer.

023-04-13 10:41:50.044 29031-31647 RenderManager com.example.camerauvctest E Failed to write file, err = /storage/emulated/0/DCIM/Camera/IMG_JJCamera_20230413104150039.jpg: open failed: ENOENT (No such file or directory)
java.io.FileNotFoundException: /storage/emulated/0/DCIM/Camera/IMG_JJCamera_20230413104150039.jpg: open failed: ENOENT (No such file or directory)
at libcore.io.IoBridge.open(IoBridge.java:492)
at java.io.FileOutputStream.(FileOutputStream.java:236)
at java.io.FileOutputStream.(FileOutputStream.java:125)
at com.jiangdg.ausbc.render.RenderManager.saveImageInternal(RenderManager.kt:421)
at com.jiangdg.ausbc.render.RenderManager.handleMessage(RenderManager.kt:141)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:246)
at android.os.HandlerThread.run(HandlerThread.java:67)
Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
at libcore.io.Linux.open(Native Method)
at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:254)
at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:8494)
at libcore.io.IoBridge.open(IoBridge.java:478)
at java.io.FileOutputStream.(FileOutputStream.java:236) 
at java.io.FileOutputStream.(FileOutputStream.java:125) 
at com.jiangdg.ausbc.render.RenderManager.saveImageInternal(RenderManager.kt:421) 
at com.jiangdg.ausbc.render.RenderManager.handleMessage(RenderManager.kt:141) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:246) 
at android.os.HandlerThread.run(HandlerThread.java:67) 
2023-04-13 10:41:50.045 29031-31647 RenderManager com.example.camerauvctest E Failed to save file /storage/emulated/0/DCIM/Camera/IMG_JJCamera_20230413104150039.jpg

how to add a callback function for processing opencv frames ?

After reading the documentation jiangdongguo/AndroidUSBCamera , I think we should add

// acquire raw data(NV21 or RGBA)
setPreviewDataCallBack(callBack)

but I don 't know how to do it , maybe you can help me ?
Best regards !