Android camera摄像头对焦，zoom的通知事件回调，告诉java应用层已经对焦完成

在vendor/sec/sec_proprietary/smdkc110/libcamera/SecCameraHWInterface.cpp中，当对硬件设置完毕后，通知packages/apps/Camera/src/com/android/camera/Camera.java，zoom已经完成。

status_t CameraHardwareSec::sendCommand(int32_t command, int32_t arg1,
int32_t arg2)
{
if( command == ZOOM_COMMAND_ID )
{
if( arg1  == mZoomLevel )
{
return NO_ERROR;
}

LOGE("startZoom (%s),arg1:%ld,mZoomLevel:%ld", __FUNCTION__,arg1,mZoomLevel);
//mZoomLevel = arg1;
//mSecCamera->startZoom(mZoomLevel);
if( arg1>mZoomLevel )
{
LOGE("zoomIn (%s)", __FUNCTION__);
mZoomLevel = arg1;
mSecCamera->zoomIn(mZoomLevel);
}
else if( arg1<mZoomLevel )
{
LOGE("zoomOut (%s)", __FUNCTION__);
mZoomLevel = arg1;
mSecCamera->zoomOut(mZoomLevel);
}
//add by hui
if (mMsgEnabled & CAMERA_MSG_ZOOM)
mNotifyCb(CAMERA_MSG_ZOOM, true, 1, mCallbackCookie);
}
return NO_ERROR;
}

应用层或者硬件层设置成功，可以对应用程序进行成功后的相关设置。例如把zoomin按钮显示出来。

private final class ZoomCallback
implements android.hardware.Camera.ZoomCallback {
public void onZoomUpdate(int zoomValue, boolean stopped,
android.hardware.Camera camera) {
Log.v(TAG, "ZoomCallback: zoom value=" + zoomValue + ". stopped="
+ stopped);
mZoomValue = zoomValue;
// Keep mParameters up to date. We do not getParameter again in
// takePicture. If we do not do this, wrong zoom value will be set.
mParameters.setZoom(zoomValue);
// We only care if the zoom is stopped. mZooming is set to true when
// we start smooth zoom.
if (stopped) mZooming = false;
updateZoomButtonsEnabled();
}
}