Retrieve the rotation angles supported for pictures by the camera.
camera_error_t camera_get_photo_rotations(camera_handle_t handle, camera_frametype_t frametype, bool burst, int numasked, int *numsupported, uint32_t *rotations, bool *nonsquare)
The handle returned by a call to the camera_open() function.
The frame type to query supported rotations for. Using CAMERA_FRAMETYPE_UNSPECIFIED will return the supported rotations for the currently configured frame type.
Set to true to query supported photo rotations usable in burst mode. Set to false otherwise.
The requested number of photo rotations to return in the rotations array. You can use a value of 0 to determine the number of photo rotations supported by the camera.
The returned number of photo rotations supported by the specified camera.
A pointer to a uint32_t array. The array is updated with the photo rotations supported by the camera. Ensure that you allocate an array with the same number of elements as specified in the numasked argument.
The value updated to reflect whether the camera supports rotation of photo images that are not a square angle (multiples of 90 degrees).
Library:libcamapi (For the qcc command, use the -l camapi option to link against this library)
Typical rotations are multiples of 90 degrees (called square rotations), such as 0, 90, 180, and 270. For cameras that support only square rotations, a value of false will be returned in the nonsquare argument.
Ensure that the rotations argument points to an array which has at least numasked elements allocated. To determine an appropriate size for this array, you can invoke this function in presizing mode by setting the numasked argument to 0 or the rotations argument to NULL. When the function is invoked in this presizing mode, the maximum array size required is returned in the numsupported argument. You can then allocate an array of the appropriate size and invoke the function again with the numasked argument set to the value returned previously in the numsupported argument.
Last modified: 2014-06-24