stream pushing ok without access permission of /dev/video0

[rtmpclient.git] / app / src / main / jni / libusb / examples / hotplugtest.c

diff --git a/app/src/main/jni/libusb/examples/hotplugtest.c b/app/src/main/jni/libusb/examples/hotplugtest.c
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+++ b/app/src/main/jni/libusb/examples/hotplugtest.c
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+/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */
+/*
+ * libusb example program for hotplug API
+ * Copyright © 2012-2013 Nathan Hjelm <hjelmn@mac.ccom>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "libusb.h"
+
+int done = 0;
+libusb_device_handle *handle;
+
+static int LIBUSB_CALL hotplug_callback(libusb_context *ctx, libusb_device *dev, libusb_hotplug_event event, void *user_data)
+{
+       struct libusb_device_descriptor desc;
+       int rc;
+
+       rc = libusb_get_device_descriptor(dev, &desc);
+       if (LIBUSB_SUCCESS != rc) {
+               fprintf (stderr, "Error getting device descriptor\n");
+       }
+
+       printf ("Device attached: %04x:%04x\n", desc.idVendor, desc.idProduct);
+
+       libusb_open (dev, &handle);
+
+       done++;
+
+       return 0;
+}
+
+static int LIBUSB_CALL hotplug_callback_detach(libusb_context *ctx, libusb_device *dev, libusb_hotplug_event event, void *user_data)
+{
+       printf ("Device detached\n");
+
+       libusb_close (handle);
+
+       done++;
+       return 0;
+}
+
+int main(int argc, char *argv[])
+{
+       libusb_hotplug_callback_handle hp[2];
+       int product_id, vendor_id, class_id;
+       int rc;
+
+       vendor_id  = (argc > 1) ? strtol (argv[1], NULL, 0) : 0x045a;
+       product_id = (argc > 2) ? strtol (argv[2], NULL, 0) : 0x5005;
+       class_id   = (argc > 3) ? strtol (argv[3], NULL, 0) : LIBUSB_HOTPLUG_MATCH_ANY;
+
+       rc = libusb_init (NULL);
+       if (rc < 0)
+       {
+               printf("failed to initialise libusb: %s\n", libusb_error_name(rc));
+               return EXIT_FAILURE;
+       }
+
+       if (!libusb_has_capability (LIBUSB_CAP_HAS_HOTPLUG)) {
+               printf ("Hotplug capabilites are not supported on this platform\n");
+               libusb_exit (NULL);
+               return EXIT_FAILURE;
+       }
+
+       rc = libusb_hotplug_register_callback (NULL, LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED, 0, vendor_id,
+               product_id, class_id, hotplug_callback, NULL, &hp[0]);
+       if (LIBUSB_SUCCESS != rc) {
+               fprintf (stderr, "Error registering callback 0\n");
+               libusb_exit (NULL);
+               return EXIT_FAILURE;
+       }
+
+       rc = libusb_hotplug_register_callback (NULL, LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT, 0, vendor_id,
+               product_id,class_id, hotplug_callback_detach, NULL, &hp[1]);
+       if (LIBUSB_SUCCESS != rc) {
+               fprintf (stderr, "Error registering callback 1\n");
+               libusb_exit (NULL);
+               return EXIT_FAILURE;
+       }
+
+       while (done < 2) {
+               rc = libusb_handle_events (NULL);
+               if (rc < 0)
+                       printf("libusb_handle_events() failed: %s\n", libusb_error_name(rc));
+       }
+
+       libusb_exit (NULL);
+}