Ensure constant framerate for demo video

The AVI framerate is fixed, so don't change the recording rate in
response to later cl_aviFrameRate changes.

Author: slipher

src/engine/RefAPI.h

@@ -217,7 +217,7 @@ struct refimport_t {
 	int ( *FS_FOpenFileRead )( const char* qpath, fileHandle_t* file );
 
 	// XreaL BEGIN
-	bool( *CL_VideoRecording )( );
+	int ( *CL_VideoRecording )( );
 	void ( *CL_WriteAVIVideoFrame )( const byte* buffer, int size );
 	// XreaL END
 

src/engine/client/cl_avi.cpp

@@ -612,7 +612,7 @@ bool CL_CloseAVI()
 CL_VideoRecording
 ===============
 */
-bool CL_VideoRecording()
+int CL_VideoRecording()
 {
-	return afd.fileOpen;
+	return afd.fileOpen ? afd.frameRate : 0;
 }

src/engine/client/cl_main.cpp

@@ -2013,15 +2013,16 @@ void CL_Frame( int msec )
 	}
 
 	// if recording an avi, lock to a fixed fps
-	if ( CL_VideoRecording() && cl_aviFrameRate->integer && msec )
+	int framerate;
+	if ( ( framerate = CL_VideoRecording() ) && msec )
 	{
 		// save the current screen
 		if ( cls.state == connstate_t::CA_ACTIVE )
 		{
 			CL_TakeVideoFrame();
 
 			// fixed time for next frame
-			msec = ( int ) ceil( ( 1000.0f / cl_aviFrameRate->value ) * com_timescale->value );
+			msec = ( int ) ceil( ( 1000.0f / framerate ) * com_timescale->value );
 
 			if ( msec == 0 )
 			{

src/engine/client/client.h

@@ -667,7 +667,7 @@ bool CL_OpenAVIForWriting( const char *filename );
 void     CL_TakeVideoFrame();
 void     CL_WriteAVIVideoFrame( const byte *imageBuffer, int size );
 bool CL_CloseAVI();
-bool CL_VideoRecording();
+int CL_VideoRecording();
 
 // XreaL END