mvHwAccel(3dm)mvHwAccel(3dm)NAME
mvGetMovieHwAcceleration, mvSetMovieHwAcceleration - Set/get movie
hardware acceleration
SYNOPSIS
#include <dmedia/moviefile.h>
DMstatus mvGetMovieHwAcceleration( MVid movie, DMboolean *hasHw );
DMstatus mvSetMovieHwAcceleration( MVid movie, DMboolean tryHw );
DESCRIPTIONmvSetMovieHwAcceleration(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
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
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).
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mvHwAccel(3dm)mvHwAccel(3dm)SEE ALSOcl_impactcomp(dm), dmic(dm), mvIntro(3dm), mvBindOpenGLWindow(3dm).
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