-static int receive_data(int fd, int revents, void *cb_data)
-{
- struct timeval tv;
- struct drv_context *drvc;
-
- (void)fd;
- (void)revents;
- (void)cb_data;
-
- drvc = di->priv;
-
- tv.tv_sec = tv.tv_usec = 0;
- libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
-
- return TRUE;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
-{
- struct dev_context *devc;
- struct drv_context *drvc;
- struct sr_usb_dev_inst *usb;
- struct sr_trigger *trigger;
- struct libusb_transfer *transfer;
- unsigned int i, timeout, num_transfers;
- int ret;
- unsigned char *buf;
- size_t size;
-
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
- drvc = di->priv;
- devc = sdi->priv;
- usb = sdi->conn;
-
- devc->cb_data = cb_data;
- devc->sent_samples = 0;
- devc->acq_aborted = FALSE;
- devc->empty_transfer_count = 0;
-
- if ((trigger = sr_session_trigger_get(sdi->session))) {
- devc->stl = soft_trigger_logic_new(sdi, trigger);
- devc->trigger_fired = FALSE;
- } else
- devc->trigger_fired = TRUE;
-
- timeout = fx2lafw_get_timeout(devc);
- num_transfers = fx2lafw_get_number_of_transfers(devc);
- size = fx2lafw_get_buffer_size(devc);
- devc->submitted_transfers = 0;
-
- devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
- if (!devc->transfers) {
- sr_err("USB transfers malloc failed.");
- return SR_ERR_MALLOC;
- }
-
- devc->num_transfers = num_transfers;
- for (i = 0; i < num_transfers; i++) {
- if (!(buf = g_try_malloc(size))) {
- sr_err("USB transfer buffer malloc failed.");
- return SR_ERR_MALLOC;
- }
- transfer = libusb_alloc_transfer(0);
- libusb_fill_bulk_transfer(transfer, usb->devhdl,
- 2 | LIBUSB_ENDPOINT_IN, buf, size,
- fx2lafw_receive_transfer, (void *)sdi, timeout);
- if ((ret = libusb_submit_transfer(transfer)) != 0) {
- sr_err("Failed to submit transfer: %s.",
- libusb_error_name(ret));
- libusb_free_transfer(transfer);
- g_free(buf);
- fx2lafw_abort_acquisition(devc);
- return SR_ERR;
- }
- devc->transfers[i] = transfer;
- devc->submitted_transfers++;
- }
-
- devc->ctx = drvc->sr_ctx;
-
- usb_source_add(sdi->session, devc->ctx, timeout, receive_data, NULL);
-
- /* Send header packet to the session bus. */
- std_session_send_df_header(cb_data, LOG_PREFIX);
-
- if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
- fx2lafw_abort_acquisition(devc);
- return ret;
- }
-
- return SR_OK;
-}
-
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)