Hi, have you tried color converting and giving 420SP (NV21) buffers? Its possible that Skype expects the camera to be giving frames in NV21 format.
-Alexy On May 2, 7:55 am, Nikko Torcita <nikkotorc...@gmail.com> wrote: > Hi all, > > I've been trying to support generic UVC cameras on android and have been > successful so far with getting the native camera app to display preview > images until I tested my code with skype video call and got stuck with a > buffer memory problem. To break it down, > > 1. I'm using the yuv422i-yuyv format since it's the only pixel format > supported by the uvc camera (Vimicro chipset) that i'm testing. I have also > set CameraService::Client::registerPreviewBuffers() to support > HAL_PIXEL_FORMAT_YCbCr_422_I in CameraService.cpp. > > 2. I set the size of my preview heap to 'PreviewHeap = width x height x 2' > since YUV422 takes up 4 bytes per 2 pixels. > > From logcat, I get this: > > D/CameraHardware(28343): PREVIEW SIZE: w=320 h=240 framerate=30 > E/CameraHardware(28343): virtual android::status_t > android::CameraHardware::startPreview() : > D/V4L2Camera(28343): USB Camera now streaming... > D/libEGL (28734): loaded /system/lib/egl/libGLES_android.so > D/libEGL (28734): loaded /vendor/lib/egl/libEGL_POWERVR_SGX540_120.so > D/libEGL (28734): loaded /vendor/lib/egl/libGLESv1_CM_POWERVR_SGX540_120.so > D/libEGL (28734): loaded /vendor/lib/egl/libGLESv2_POWERVR_SGX540_120.so > *E/Camera-JNI(28734): Manually set buffer was too small! Expected 153600 > bytes, but got 115201!* > *E/Camera-JNI(28734): Manually set buffer was too small! Expected 153600 > bytes, but got 115201!* > *E/Camera-JNI(28734): Manually set buffer was too small! Expected 153600 > bytes, but got 115201!* > W/com.skype.je(28734): not showing > > I traced it down to the camera jni and it seems like somewhere above the > HAL, a buffer was set to accommodate only up to 'width x height x 1.5'. > Hence, 320x240x1.5 = 115200 instead of 320x240x2 = 153600. Could it be that > the skype application only provided support for NV21 (YUV420) which takes > up 'width x height x 1.5' bytes of data? > > Thank you in advance. > > Nikko Torcita -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
