[libcvd-members] libcvd cvd/videobuffer.h cvd_src/exceptions.cc

[Edward Rosten]

CVSROOT:        /cvsroot/libcvd
Module name:    libcvd
Changes by:     Edward Rosten <edrosten>        08/12/01 14:01:15

Modified files:
        cvd            : videobuffer.h 
        cvd_src        : exceptions.cc 

Log message:
        Added a new runtime exception, where a video buffer is unable to grab
        video in the selected colourspace.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/libcvd/cvd/videobuffer.h?cvsroot=libcvd&r1=1.12&r2=1.13
http://cvs.savannah.gnu.org/viewcvs/libcvd/cvd_src/exceptions.cc?cvsroot=libcvd&r1=1.4&r2=1.5

Patches:
Index: cvd/videobuffer.h
===================================================================
RCS file: /cvsroot/libcvd/libcvd/cvd/videobuffer.h,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -b -r1.12 -r1.13
--- cvd/videobuffer.h   28 Nov 2008 16:56:04 -0000      1.12
+++ cvd/videobuffer.h   1 Dec 2008 14:01:13 -0000       1.13
@@ -114,6 +114,17 @@
                        return m_type;
                }
 
+               /// Flush all old frames out of the video buffer,
+               /// on a flushable buffer, causing the next get_frame()
+               /// to sleep until a frame arrives. On a non-flushable
+               /// buffer, this does nothing.
+               virtual void flush()
+               {
+                       if(type() == Flushable)
+                               while(frame_pending())
+                                       put_frame(get_frame());
+               }
+
                /// What is the (expected) frame rate of this video buffer, in 
frames per second?               
                virtual double frame_rate()=0;
                /// Go to a particular point in the video buffer (only 
implemented in buffers of recorded video)
@@ -149,6 +160,16 @@
                {
                        BadPutFrame();
                };
+               
+               /// The videobuffer was unable to successfully initialize 
grabbing in the 
+               /// specified colourspace.
+               /// @ingroup gException
+               struct BadColourSpace: public All
+               {
+                       /// @param colourspace Specify the failed colourspace.
+                       /// @param b Specify the failed buffer.
+                       BadColourSpace(const std::string& colourspace, const 
std::string& b); 
+               };
        }
 }
 

Index: cvd_src/exceptions.cc
===================================================================
RCS file: /cvsroot/libcvd/libcvd/cvd_src/exceptions.cc,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -b -r1.4 -r1.5
--- cvd_src/exceptions.cc       9 May 2005 11:54:59 -0000       1.4
+++ cvd_src/exceptions.cc       1 Dec 2008 14:01:14 -0000       1.5
@@ -30,3 +30,8 @@
 {      
        what="Attempted to put_frame() on the wrong kind of frame.";
 }
+
+CVD::Exceptions::VideoBuffer::BadColourSpace::BadColourSpace(const 
std::string& c, const std::string& buffer)
+{      
+       what=buffer + " can not grab video in the " + c + "colourspace on the 
specified device.";
+}