commit 8024d93
Author: Henrik Gulbrandsen <henrik@gulbra.net>
Date:   Fri Jan 4 13:49:22 2013 +0100

    Bug 826985 - Support more video formats for WebRTC via libv4l2 on Linux.
---
 config/system-headers                                   |  1 +
 old-configure.in                                        |  7 +++++++
 media/webrtc/signaling/test/Makefile.in                 |  1 +
 .../modules/video_capture/linux/device_info_linux.cc    | 17 +++++++++++++++++
 .../modules/video_capture/linux/video_capture_linux.cc  | 16 +++++++++++++++-
 .../webrtc/modules/video_capture/video_capture.gypi     | 11 +++++++++++
 toolkit/library/Makefile.in                             |  1 +
 6 files changed, 52 insertions(+), 1 deletion(-)

diff --git config/system-headers.mozbuild config/system-headers.mozbuild
index e02d381a12e9..7620b4d00623 100644
--- config/system-headers.mozbuild
+++ config/system-headers.mozbuild
@@ -428,6 +428,7 @@ system_headers = [
     'libgnomeui/gnome-icon-theme.h',
     'libgnomeui/gnome-ui-init.h',
     'libutil.h',
+    'libv4l2.h',
     'limits.h',
     'link.h',
     'linux/ioprio.h',
diff --git old-configure.in configure.in
index 55e4cd1..76567b3 100644
--- old-configure.in
+++ old-configure.in
@@ -2558,6 +2558,9 @@ if test -n "$MOZ_WEBRTC"; then
     if test -n "$MOZ_X11"; then
       MOZ_WEBRTC_X11_LIBS="-lXext -lXdamage -lXfixes -lXcomposite"
     fi
+
+    dnl with libv4l2 we can support more cameras
+    PKG_CHECK_MODULES(MOZ_LIBV4L2, libv4l2)
 else
     MOZ_SYNTH_PICO=
 fi
diff --git build/gyp.mozbuild build/gyp.mozbuild
index b483cd1..f1dd1f0 100644
--- build/gyp.mozbuild
+++ build/gyp.mozbuild
@@ -11,6 +11,7 @@ gyp_vars = {
     'have_ethtool_cmd_speed_hi': 1 if CONFIG['MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI'] else 0,
     'include_alsa_audio': 1 if CONFIG['MOZ_ALSA'] else 0,
     'include_pulse_audio': 1 if CONFIG['MOZ_PULSEAUDIO'] else 0,
+    'use_libv4l2': 1 if CONFIG['MOZ_LIBV4L2_LIBS'] else 0,
     # basic stuff for everything
     'include_internal_video_render': 0,
     'clang_use_chrome_plugins': 0,
diff --git media/webrtc/trunk/webrtc/modules/video_capture/linux/device_info_linux.cc media/webrtc/trunk/webrtc/modules/video_capture/linux/device_info_linux.cc
index 239a292..bab496c 100644
--- media/webrtc/trunk/webrtc/modules/video_capture/linux/device_info_linux.cc
+++ media/webrtc/trunk/webrtc/modules/video_capture/linux/device_info_linux.cc
@@ -25,6 +25,9 @@
 #else
 #include <linux/videodev2.h>
 #endif
+#ifdef HAVE_LIBV4L2
+#include <libv4l2.h>
+#endif
 
 #include "webrtc/system_wrappers/interface/ref_count.h"
 #include "webrtc/system_wrappers/interface/trace.h"
@@ -34,6 +37,15 @@
 #define BUF_LEN     ( 1024 * ( EVENT_SIZE + 16 ) )
 #endif
 
+#ifdef HAVE_LIBV4L2
+#define open	v4l2_open
+#define close	v4l2_close
+#define dup	v4l2_dup
+#define ioctl	v4l2_ioctl
+#define mmap	v4l2_mmap
+#define munmap	v4l2_munmap
+#endif
+
 namespace webrtc
 {
 namespace videocapturemodule
@@ -274,6 +286,11 @@ int32_t DeviceInfoLinux::GetDeviceName(
     memset(deviceNameUTF8, 0, deviceNameLength);
     memcpy(cameraName, cap.card, sizeof(cap.card));
 
+    if (cameraName[0] == '\0')
+    {
+        sprintf(cameraName, "Camera at /dev/video%d", deviceNumber);
+    }
+
     if (deviceNameLength >= strlen(cameraName))
     {
         memcpy(deviceNameUTF8, cameraName, strlen(cameraName));
diff --git media/webrtc/trunk/webrtc/modules/video_capture/linux/video_capture_linux.cc media/webrtc/trunk/webrtc/modules/video_capture/linux/video_capture_linux.cc
index 12df1b3..e9863ba 100644
--- media/webrtc/trunk/webrtc/modules/video_capture/linux/video_capture_linux.cc
+++ media/webrtc/trunk/webrtc/modules/video_capture/linux/video_capture_linux.cc
@@ -25,6 +25,9 @@
 #else
 #include <linux/videodev2.h>
 #endif
+#ifdef HAVE_LIBV4L2
+#include <libv4l2.h>
+#endif
 
 #include <new>
 
@@ -32,6 +35,15 @@
 #include "webrtc/modules/video_capture/linux/video_capture_linux.h"
 #include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 #include "webrtc/system_wrappers/include/trace.h"
+
+#ifdef HAVE_LIBV4L2
+#define open	v4l2_open
+#define close	v4l2_close
+#define dup	v4l2_dup
+#define ioctl	v4l2_ioctl
+#define mmap	v4l2_mmap
+#define munmap	v4l2_munmap
+#endif
 
 namespace webrtc {
 namespace videocapturemodule {
diff --git media/webrtc/trunk/webrtc/modules/video_capture/video_capture.gypi media/webrtc/trunk/webrtc/modules/video_capture/video_capture.gypi
index d46b5aa..e452223 100644
--- media/webrtc/trunk/webrtc/modules/video_capture/video_capture.gypi
+++ media/webrtc/trunk/webrtc/modules/video_capture/video_capture.gypi
@@ -7,6 +7,9 @@
 # be found in the AUTHORS file in the root of the source tree.
 
 {
+  'variables': {
+     'use_libv4l2%': 0,
+  },
   'targets': [
     {
       'target_name': 'video_capture_module',
@@ -76,6 +76,19 @@
                 'linux/video_capture_linux.cc',
                 'linux/video_capture_linux.h',
               ],
+              'conditions': [
+                ['use_libv4l2==1', {
+                  'defines': [
+                    'HAVE_LIBV4L2',
+                  ],
+                  'cflags_mozilla': [
+                    '$(MOZ_LIBV4L2_CFLAGS)',
+                  ],
+                  'libraries': [
+                    '-lv4l2',
+                  ],
+                }],
+              ],
             }],
             ['OS=="mac"', {
               'sources': [
diff --git toolkit/library/moz.build toolkit/library/moz.build
index 9c16ffa..1db3794 100644
--- toolkit/library/moz.build
+++ toolkit/library/moz.build
@@ -163,6 +163,7 @@ if CONFIG['OS_ARCH'] == 'Linux' and CONF
     ]
 
 OS_LIBS += CONFIG['MOZ_CAIRO_OSLIBS']
+OS_LIBS += CONFIG['MOZ_LIBV4L2_LIBS']
 OS_LIBS += CONFIG['MOZ_WEBRTC_X11_LIBS']
 OS_LIBS += CONFIG['MOZ_APP_EXTRA_LIBS']