video_capture: Better support for UYVY

webrtc/modules/video_capture/linux/device_info_linux.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 239 matching lines @@
 int32_t DeviceInfoLinux::FillCapabilities(int fd)
 {
 
     // set image format
     struct v4l2_format video_fmt;
     memset(&video_fmt, 0, sizeof(struct v4l2_format));
 
     video_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
     video_fmt.fmt.pix.sizeimage = 0;
 
-    int totalFmts = 3;
+    int totalFmts = 4;
     unsigned int videoFormats[] = {
         V4L2_PIX_FMT_MJPEG,
         V4L2_PIX_FMT_YUV420,
-        V4L2_PIX_FMT_YUYV };
+        V4L2_PIX_FMT_YUYV,
+        V4L2_PIX_FMT_UYVY };
 
     int sizes = 13;
     unsigned int size[][2] = { { 128, 96 }, { 160, 120 }, { 176, 144 },
                                { 320, 240 }, { 352, 288 }, { 640, 480 },
                                { 704, 576 }, { 800, 600 }, { 960, 720 },
                                { 1280, 720 }, { 1024, 768 }, { 1440, 1080 },
                                { 1920, 1080 } };
 
     int index = 0;
     for (int fmts = 0; fmts < totalFmts; fmts++)
@@ skipping 18 matching lines @@
                         cap.rawType = kVideoYUY2;
                     }
                     else if (videoFormats[fmts] == V4L2_PIX_FMT_YUV420)
                     {
                         cap.rawType = kVideoI420;
                     }
                     else if (videoFormats[fmts] == V4L2_PIX_FMT_MJPEG)
                     {
                         cap.rawType = kVideoMJPEG;
                     }
+                    else if (videoFormats[fmts] == V4L2_PIX_FMT_UYVY)
+                    {
+                        cap.rawType = kVideoUYVY;
+                    }
 
                     // get fps of current camera mode
                     // V4l2 does not have a stable method of knowing so we just guess.
                     if(cap.width >= 800 && cap.rawType != kVideoMJPEG)
                     {
                         cap.maxFPS = 15;
                     }
                     else
                     {
                         cap.maxFPS = 30;
@@ skipping 12 matching lines @@
     WEBRTC_TRACE(webrtc::kTraceInfo,
                  webrtc::kTraceVideoCapture,
                  _id,
                  "CreateCapabilityMap %u",
                  static_cast<unsigned int>(_captureCapabilities.size()));
     return _captureCapabilities.size();
 }
 
 }  // namespace videocapturemodule
 }  // namespace webrtc