webrtc/media/devices/win32deviceinfo.cc

/*
 * libjingle
 * Copyright 2012 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "webrtc/media/devices/deviceinfo.h"

namespace cricket {

bool GetUsbId(const Device& device, std::string* usb_id) {
  // Both PID and VID are 4 characters.
  const int id_size = 4;
  const char vid[] = "vid_";  // Also contains '\0'.
  const size_t vid_location = device.id.find(vid);
  if (vid_location == std::string::npos ||
      vid_location + sizeof(vid) - 1 + id_size > device.id.size()) {
    return false;
  }
  const char pid[] = "pid_";
  const size_t pid_location = device.id.find(pid);
  if (pid_location == std::string::npos ||
      pid_location + sizeof(pid) - 1 + id_size > device.id.size()) {
    return false;
  }
  std::string id_vendor = device.id.substr(vid_location + sizeof(vid) - 1,
                                           id_size);
  std::string id_product = device.id.substr(pid_location + sizeof(pid) -1,
                                            id_size);
  usb_id->clear();
  usb_id->append(id_vendor);
  usb_id->append(":");
  usb_id->append(id_product);
  return true;
}

bool GetUsbVersion(const Device& device, std::string* usb_version) {
  return false;
}

}  // namespace cricket