free_preview_buffer_func

Free a preview buffer

Synopsis:

#include <camera/external_camera_api.h>

typedef int(* free_preview_buffer_func_t)(void *handle,
            void *vaddr,
            uint32_t size);

handle: The handle that's returned from calling the function open_external_camera_func_t.
vaddr: The preview buffer address.
size: The preview buffer size in bytes.

libcamapi

This function is called to free a buffer that was previously allocated using allocate_preview_buffer_func_t.

Note:

This function is optional. If it is not present, the camera will not support allocating preview buffers from the external camera library.

CAMERA_EOK when the function successfully completes, otherwise another camera_error_t value that provides the reason that the call failed.