Using the ndk interface to operate the camera, how to set the camera capture image fps, height and width

[周青]

0down votefavorite
<https://stackoverflow.com/questions/50850671/using-the-ndk-interface-to-operate-the-camera-how-to-set-the-camera-capture-ima#>

I use the ndk interface to successfully open the camera, but fps and other
parameters can not be set

camera_status = ACameraManager_getCameraCharacteristics(cameraManager, selectedCameraId,
&cameraMetadata);

camera_status = ACameraManager_openCamera(cameraManager, selectedCameraId,
&deviceStateCallbacks, &cameraDevice);ACameraCaptureSession_setRepeatingRequest(captureSession,&captureSession_captureCal
lbacks, 1, &captureRequest, NULL);

[Florian Limberger]

Hi,

parameters like the FPS are set on the capture request:

- https://developer.android.com/ndk/reference/group/camera#acapturerequest
- https://developer.android.com/ndk/reference/group/camera#acapturerequest_setentry_i32

int32_t fpsRange[2] = {fps, fps};
ACaptureRequest_setEntry_i32(captureRequest,

ACAMERA_CONTROL_AE_TARGET_FPS_RANGE, 2, &fpsRange[0]);

Regards


flo

0down votefavorite
<https://stackoverflow.com/questions/50850671/using-the-ndk-interface-to-operate-the-camera-how-to-set-the-camera-capture-ima#>
I use the ndk interface to successfully open the camera, but fps and other
parameters can not be set
camera_status = ACameraManager_getCameraCharacteristics(cameraManager, selectedCameraId,
&cameraMetadata);
camera_status = ACameraManager_openCamera(cameraManager, selectedCameraId,
&deviceStateCallbacks, &cameraDevice);ACameraCaptureSession_setRepeatingRequest(captureSession,&captureSession_captureCal
lbacks, 1, &captureRequest, NULL);

[周青]

I try to set fps 30 or 15.
the count of image every second from camera is same.this is not 30 or 15 to
output.
please
int32_t mFramerateRange[2] = {30,30};
or
int32_t mFramerateRange[2] = {15,15};
ret = ACaptureRequest_setEntry_i32(mCapture_request,
ACAMERA_CONTROL_AE_TARGET_FPS_RANGE,2,mFramerateRange);

圚 2018幎6月19日星期二 UTC+8䞋午11:23:42Florian Limberger写道

Post by Florian Limberger
Hi,
- https://developer.android.com/ndk/reference/group/camera#acapturerequest
-
https://developer.android.com/ndk/reference/group/camera#acapturerequest_setentry_i32

int32_t fpsRange[2] = {fps, fps};
ACaptureRequest_setEntry_i32(captureRequest,

ACAMERA_CONTROL_AE_TARGET_FPS_RANGE, 2, &fpsRange[0]);
Regards
flo

0down votefavorite
<https://stackoverflow.com/questions/50850671/using-the-ndk-interface-to-operate-the-camera-how-to-set-the-camera-capture-ima#>
I use the ndk interface to successfully open the camera, but fps and
other parameters can not be set
camera_status = ACameraManager_getCameraCharacteristics(cameraManager, selectedCameraId,
&cameraMetadata);
camera_status = ACameraManager_openCamera(cameraManager, selectedCameraId,
&deviceStateCallbacks, &cameraDevice);ACameraCaptureSession_setRepeatingRequest(captureSession,&captureSession_captureCal
lbacks, 1, &captureRequest, NULL);

[周青]

I have fixed this issue.thank you.

圚 2018幎6月19日星期二 UTC+8䞋午11:23:42Florian Limberger写道

Post by Florian Limberger
Hi,
- https://developer.android.com/ndk/reference/group/camera#acapturerequest
-
https://developer.android.com/ndk/reference/group/camera#acapturerequest_setentry_i32

int32_t fpsRange[2] = {fps, fps};
ACaptureRequest_setEntry_i32(captureRequest,

ACAMERA_CONTROL_AE_TARGET_FPS_RANGE, 2, &fpsRange[0]);
Regards
flo

0down votefavorite
<https://stackoverflow.com/questions/50850671/using-the-ndk-interface-to-operate-the-camera-how-to-set-the-camera-capture-ima#>
I use the ndk interface to successfully open the camera, but fps and
other parameters can not be set
camera_status = ACameraManager_getCameraCharacteristics(cameraManager, selectedCameraId,
&cameraMetadata);
camera_status = ACameraManager_openCamera(cameraManager, selectedCameraId,
&deviceStateCallbacks, &cameraDevice);ACameraCaptureSession_setRepeatingRequest(captureSession,&captureSession_captureCal
lbacks, 1, &captureRequest, NULL);

[m***@gmail.com]

Hi 呚青,

*would you please post your fix?*

*Thanks,*
*Thomas*

Post by 周青
I have fixed this issue.thank you.
圚 2018幎6月19日星期二 UTC+8䞋午11:23:42Florian Limberger写道

Post by Florian Limberger
Hi,
-
https://developer.android.com/ndk/reference/group/camera#acapturerequest
-
https://developer.android.com/ndk/reference/group/camera#acapturerequest_setentry_i32

int32_t fpsRange[2] = {fps, fps};
ACaptureRequest_setEntry_i32(captureRequest,

ACAMERA_CONTROL_AE_TARGET_FPS_RANGE, 2, &fpsRange[0]);
Regards
flo

0down votefavorite
<https://stackoverflow.com/questions/50850671/using-the-ndk-interface-to-operate-the-camera-how-to-set-the-camera-capture-ima#>
I use the ndk interface to successfully open the camera, but fps and
other parameters can not be set
camera_status = ACameraManager_getCameraCharacteristics(cameraManager, selectedCameraId,
&cameraMetadata);
camera_status = ACameraManager_openCamera(cameraManager, selectedCameraId,
&deviceStateCallbacks, &cameraDevice);ACameraCaptureSession_setRepeatingRequest(captureSession,&captureSession_captureCal
lbacks, 1, &captureRequest, NULL);