get_buffer_requirements_func

Identify the number of buffers and the size of each buffer that are required by the sensor

Synopsis:

#include <sensor/external_sensor_api.h>

typedef int(* get_buffer_requirements_func_t)(void *handle,
            uint32_t *numBuffers,
            uint32_t *bufSize);

handle: The handle that's returned from calling the function referred to by open_external_sensor_func_t.
numBuffers: Must be set to the minimum number of buffers required.
bufSize: Must be set to the size in bytes required for the buffers.

libsensor

The details of buffer are required based on the current configuration and are also required to allocate buffers prior to streaming being started.

SENSOR_EOK when the function successfully completes; otherwise another sensor_error_t value that provides the reason that the call failed.