mvHwAccel(3dm)							mvHwAccel(3dm)

NAME    [Toc]    [Back]

     mvGetMovieHwAcceleration, mvSetMovieHwAcceleration	- Set/get movie
     hardware acceleration

SYNOPSIS    [Toc]    [Back]

     #include <dmedia/moviefile.h>

     DMstatus mvGetMovieHwAcceleration(	MVid movie, DMboolean *hasHw );

     DMstatus mvSetMovieHwAcceleration(	MVid movie, DMboolean tryHw );

DESCRIPTION    [Toc]    [Back]

     mvSetMovieHwAcceleration(3dm) should be used to tell the Movie Playback
     Library to	use hardware acceleration when available for a given movie.
     mvSetMovieHwAcceleration(3dm) must	not be called while a movie is
     currently bound to	a window (or port).

     Calling this routine with a tryHw value of	DM_TRUE	does NOT insure	that
     hardware acceleration will	actually be used.  An application can
     determine whether or not acceleration is actually used by calling
     mvGetMovieHwAcceleration(3dm).

     Binding a movie to	a window may change the	state of the hardware
     acceleration for that movie.  In other words, the Movie Playback Library
     may decide	to not use hardware acceleration for a movie once it is	bound.

DEFAULTS    [Toc]    [Back]

     The default use of	hardware acceleration is system	dependent.  On systems
     with ICE hardware (O2), the default is to use hardware acceleration when
     the movie is compatible with the hardware.	 On all	other systems, the
     default is	not to use hardware acceleration.

SUPPORTED HARDWARE    [Toc]    [Back]

     Cosmo Compress (optional for Indy systems)	is supported.  Cosmp Compress
     will only be used when Indy Video or Indy Video 601 is also available.
     Only one movie can	use this hardware at a time.  Furthermore, the
     accelerator is only used for JPEG movies that are compatible with the
     Comso Compress/Indy Video hardware. Cosmo Compress	does NOT support
     QuickTime MJPEG A.


     Impact Compression	(optional for Indigo2 systems) is supported.  Impact
     Compression will only be used when	Impact Video is	also available.	 Only
     one movie can use this hardware at	a time.	 Furthermore, the accelerator
     is	only used for JPEG movies that are compatible with the Impact
     Compression hardware.  Impact Compresssion	supports both SGI JPEG and
     QuickTime MJPEG A field based movies.



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mvHwAccel(3dm)							mvHwAccel(3dm)



     Octane Compression	(optional for Octane systems) is supported.  Octane
     Compression will only be used when	Octane Video is	also available.	 Only
     one movie can use this hardware at	a time.	 Furthermore, the accelerator
     is	only used for JPEG movies that are compatible with the Octane
     Compression hardware.  Octane Compresssion	supports both SGI JPEG and
     QuickTime MJPEG A field based movies.


     The ICE hardware is supported on O2 systems.  This	accelerator is only
     used for DIF streams (DV, DVCPROC)	or JPEG	movies that are	compatible
     with the ICE hardware.  There is a	finite (but large) maximum number of
     simultaneous ICE connections.  ICE	supports SGI JPEG and QuickTime	MJPEG
     A movies as well as DIF streams (DV, DVCPRO).

SEE ALSO    [Toc]    [Back]

     cl_cosmo(dm), cl_impactcomp(dm), dmic(dm),	mvIntro(3dm),
     mvBindOpenGLWindow(3dm).


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