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exit if our usb device disappears

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This commit is contained in:
Hoernchen 2013-01-16 20:03:00 +01:00
parent 84f0a9084b
commit 3cbf139261
1 changed files with 20 additions and 11 deletions
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31
src/librtlsdr.c
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@ -89,6 +89,7 @@ struct rtlsdr_dev {
int corr; /* ppm */
int gain; /* tenth dB */
struct e4k_state e4k_s;
int dev_lost;
};
void rtlsdr_set_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int val);
@ -1309,6 +1310,8 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
libusb_init(&dev->ctx);
dev->dev_lost = 1;
cnt = libusb_get_device_list(dev->ctx, &list);
for (i = 0; i < cnt; i++) {
@ -1358,6 +1361,7 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
}
rtlsdr_init_baseband(dev);
dev->dev_lost = 0;
/* Probe tuners */
rtlsdr_set_i2c_repeater(dev, 1);
@ -1452,16 +1456,18 @@ int rtlsdr_close(rtlsdr_dev_t *dev)
if (!dev)
return -1;
/* block until all async operations have been completed (if any) */
while (RTLSDR_INACTIVE != dev->async_status) {
if(!dev->dev_lost) {
/* block until all async operations have been completed (if any) */
while (RTLSDR_INACTIVE != dev->async_status) {
#ifdef _WIN32
Sleep(1);
Sleep(1);
#else
usleep(1000);
usleep(1000);
#endif
}
}
rtlsdr_deinit_baseband(dev);
rtlsdr_deinit_baseband(dev);
}
libusb_release_interface(dev->devh, 0);
libusb_close(dev->devh);
@ -1501,10 +1507,11 @@ static void LIBUSB_CALL _libusb_callback(struct libusb_transfer *xfer)
dev->cb(xfer->buffer, xfer->actual_length, dev->cb_ctx);
libusb_submit_transfer(xfer); /* resubmit transfer */
} else if (LIBUSB_TRANSFER_CANCELLED == xfer->status) {
/* nothing to do */
} else {
/*fprintf(stderr, "transfer status: %d\n", xfer->status);*/
} else if (LIBUSB_TRANSFER_CANCELLED != xfer->status &&
LIBUSB_TRANSFER_COMPLETED != xfer->status) {
dev->dev_lost = 1;
rtlsdr_cancel_async(dev);
fprintf(stderr, "cb transfer status: %d, canceling...\n", xfer->status);
}
}
@ -1640,8 +1647,10 @@ int rtlsdr_read_async(rtlsdr_dev_t *dev, rtlsdr_read_async_cb_t cb, void *ctx,
}
}
if (RTLSDR_INACTIVE == next_status)
if (dev->dev_lost || RTLSDR_INACTIVE == next_status) {
libusb_handle_events_timeout(dev->ctx, &tv);
break;
}
}
}