[Opalvoip-svn] SF.net SVN: opalvoip: [18739] ptlib/trunk

[<sh...@us...>]

Revision: 18739
          http://opalvoip.svn.sourceforge.net/opalvoip/?rev=18739&view=rev
Author:   shorne
Date:     2007-10-22 11:36:06 -0700 (Mon, 22 Oct 2007)

Log Message:
-----------
Added ability to get device capabilities for Input Devices

Modified Paths:
--------------
    ptlib/trunk/include/ptlib/videoio.h
    ptlib/trunk/src/ptlib/common/vfakeio.cxx
    ptlib/trunk/src/ptlib/msos/vfw.cxx

Modified: ptlib/trunk/include/ptlib/videoio.h
===================================================================
--- ptlib/trunk/include/ptlib/videoio.h	2007-10-22 18:33:45 UTC (rev 18738)
+++ ptlib/trunk/include/ptlib/videoio.h	2007-10-22 18:36:06 UTC (rev 18739)
@@ -267,6 +267,7 @@
 
 #include <ptlib/plugin.h>
 #include <ptlib/pluginmgr.h>
+#include <list>
 
 class PColourConverter;
 
@@ -963,7 +964,16 @@
 
 #endif // SHOULD_BE_MOVED_TO_PLUGIN
 
+typedef struct {
+public:
+	unsigned      height;
+	unsigned      width;
+	const char*   format;
+	double        fps;
+} InputDeviceCapability; 
 
+typedef std::list<InputDeviceCapability>  InputDeviceCapabilities;
+
 /**This class defines a video input device.
  */
 class PVideoInputDevice : public PVideoDevice
@@ -1035,6 +1045,13 @@
       BOOL startImmediate = TRUE          ///< Immediately start display
     );
 
+	/**Retrieve a list of Device Capabilities
+	  */
+	static BOOL GetDeviceCapabilities(
+      const PString & /*deviceName*/,           ///< Name of device
+	  InputDeviceCapabilities & /*caps*/        ///< List of supported capabilities
+	) { return FALSE; }
+
     /**Open the device given the device name.
       */
     virtual BOOL Open(
@@ -1089,6 +1106,8 @@
   public:
     virtual PObject *   CreateInstance(int /*userData*/) const { return new className; }
     virtual PStringList GetDeviceNames(int /*userData*/) const { return className::GetInputDeviceNames(); }
+	virtual BOOL GetDeviceCapabilities(const PString & deviceName, InputDeviceCapabilities & caps) const
+	                                  { return className::GetDeviceCapabilities(deviceName,caps); }
 };
 
 #define PCREATE_VIDINPUT_PLUGIN(name) \

Modified: ptlib/trunk/src/ptlib/common/vfakeio.cxx
===================================================================
--- ptlib/trunk/src/ptlib/common/vfakeio.cxx	2007-10-22 18:33:45 UTC (rev 18738)
+++ ptlib/trunk/src/ptlib/common/vfakeio.cxx	2007-10-22 18:36:06 UTC (rev 18739)
@@ -1488,6 +1488,13 @@
     virtual PStringList GetDeviceNames() const
       { return GetInputDeviceNames(); }
 
+	/**Retrieve a list of Device Capabilities
+	  */
+	static BOOL GetDeviceCapabilities(
+      const PString & /*deviceName*/,           ///< Name of device
+	  InputDeviceCapabilities & /*caps*/        ///< List of supported capabilities
+	  )  { return FALSE; }
+
     /**Get the maximum frame size in bytes.
 
        Note a particular device may be able to provide variable length

Modified: ptlib/trunk/src/ptlib/msos/vfw.cxx
===================================================================
--- ptlib/trunk/src/ptlib/msos/vfw.cxx	2007-10-22 18:33:45 UTC (rev 18738)
+++ ptlib/trunk/src/ptlib/msos/vfw.cxx	2007-10-22 18:36:06 UTC (rev 18739)
@@ -389,6 +389,13 @@
     virtual PStringList GetDeviceNames() const
       { return GetInputDeviceNames(); }
 
+	/**Retrieve a list of Device Capabilities
+	  */
+	static BOOL GetDeviceCapabilities(
+      const PString & /*deviceName*/,           ///< Name of device
+	  InputDeviceCapabilities & /*caps*/        ///< List of supported capabilities
+	  )  { return FALSE; }
+
     /**Open the device given the device name.
       */
     virtual BOOL Open(


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