Hi All,
I am just trying to understand the VideoRecording Path. As far as my
understanding goes the flow is as below,
Camera.java ->android_hardware_Camera.cpp ->Camera.cpp ->ICamera.cpp -
>CameraService.cpp -> CameraHAL.cpp -> V4L2 Interface
I see that the callback functions are set in CameraService.cpp as
below,
CameraService::Client::Client(...)
{
[..]
mHardware->setCallbacks(notifyCallback,
dataCallback,
dataCallbackTimestamp,
mCameraService.get());
[..]
}
So, once HAL layer finishes grabbing via a frame via V4L2 it should
call the dataCallback() function registered and our video data should
be present at "dataPtr" memory location.
dataCallback(int32_t msgType, const sp<IMemory>& dataPtr,
void* user)
After this point I am not able to figure out as to how does this video
data gets passed to StageFrightRecorder interface. I believe
CameraService should be the place from where the data goes into the
StageFright framework for encoding. Am I right ?
Please help me with the code pointer where the data gets passed into
framework for encoding.
Thanks
White
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