[Gstreamer-bugs] [Bug 109330] New - v4lsrc doesn't work with philips webcams (based on pwc kernel module)

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http://bugzilla.gnome.org/show_bug.cgi?id=109330

Changed by pablo.dangelo at web.de.

--- shadow/109330	Thu Mar 27 10:23:49 2003
+++ shadow/109330.tmp.30422	Thu Mar 27 10:23:49 2003
@@ -0,0 +1,82 @@
+Bug#: 109330
+Product: GStreamer
+Version: 0.6.0
+OS: Linux
+OS Details: Debian unstable
+Status: NEW   
+Resolution: 
+Severity: normal
+Priority: Normal
+Component: gst-plugins
+AssignedTo: gstreamer-maint at bugzilla.gnome.org                            
+ReportedBy: pablo.dangelo at web.de               
+QAContact: gstreamer-maint at bugzilla.gnome.org
+TargetMilestone: 0.6.x
+URL: 
+Summary: v4lsrc doesn't work with philips webcams (based on pwc kernel module)
+
+I've tried to receive a video stream from my Philips 740 webcam with 
+the v4lsrc of gstreamer 0.6 (the version in debian unstable). 
+ 
+I tried: 
+ 
+--------------------- 
+island.wh-wurm.uni-ulm.de$ gst-launch v4lsrc device=/dev/video0 width=320 
+height=256  ! sdlvideosink 
+INFO ( 7818: 0) Initializing GStreamer Core Library version 0.6.0 
+INFO ( 7818: 0) CPU features: (0c040882) MMX SSE 
+registry: loaded global_registry in 0.373959 seconds 
+          (/var/lib/gstreamer/0.6/registry.xml) 
+GStreamer-INFO: 0 live buffer(s) 
+GStreamer-INFO: 1 live bufferpool(s) 
+GStreamer-INFO: 0 live event(s) 
+RUNNING pipeline 
+Opened device 'Philips 740 webcam' ('/dev/video0') successfully 
+ERROR: /pipeline0/v4lsrc0: Error setting audio mute: (un)setting mute is not 
+supported 
+pipeline doesn't want to play 
+GStreamer-INFO: 0 live buffer(s) 
+GStreamer-INFO: 1 live bufferpool(s) 
+GStreamer-INFO: 0 live event(s) 
+--------------------- 
+ 
+gst-inspect v4lsrc claims that the default for "has-audio" is false, 
+so it shouldn't try to set any of the audio properties, because the driver rightfully 
+claims that it doesn't support these options, leading to the failure. 
+ 
+when I tried to explicitly set has-audio property to false it didn't work either 
+ 
+--------------------- 
+ 
+island.wh-wurm.uni-ulm.de$ gst-launch v4lsrc has-audio=false 
+device=/dev/video0 width=320 height=256  ! sdlvideosink 
+INFO ( 7822: 0) Initializing GStreamer Core Library version 0.6.0 
+INFO ( 7822: 0) CPU features: (0c040882) MMX SSE 
+registry: loaded global_registry in 0.369138 seconds 
+          (/var/lib/gstreamer/0.6/registry.xml) 
+ 
+** (process:7822): WARNING **: gstv4lelement.c:383: invalid property id 7 for 
+"has-audio" of type `GParamBoolean' in `GstV4lSrc' 
+GStreamer-INFO: 0 live buffer(s) 
+GStreamer-INFO: 1 live bufferpool(s) 
+GStreamer-INFO: 0 live event(s) 
+RUNNING pipeline 
+Opened device 'Philips 740 webcam' ('/dev/video0') successfully 
+ERROR: /pipeline0/v4lsrc0: Error setting audio mute: (un)setting mute is not 
+supported 
+pipeline doesn't want to play 
+GStreamer-INFO: 0 live buffer(s) 
+GStreamer-INFO: 1 live bufferpool(s) 
+GStreamer-INFO: 0 live event(s) 
+---------------------------- 
+ 
+Then I hacked v4l_calls.c a little bit and replaces gst_v4l_set_audio with: 
+gboolean 
+gst_v4l_set_audio (GstV4lElement   *v4lelement, 
+                   GstV4lAudioType type, 
+                   gint            value) 
+{ 
+  return TRUE; 
+} 
+ 
+and it worked fine.