dmPMGetSourceAUsage(3dm)

NAME
     dmPMGetSourceAUsage, dmPMGetSourceBUsage, dmPMGetDestUsage - retrieves
     the usage bitmask of the plugin


SYNOPSIS
     #include <dmedia/fx_plugin_mgr.h>

     int dmPMGetSourceAUsage
           ( DMplugin* plugin )

     int dmPMGetSourceBUsage
           ( DMplugin* plugin )

     int dmPMGetDestUsage
           ( DMplugin* plugin )


PARAMETERS
     plugin   A pointer to a DMplugin, which was created with dmPMInitPlugin
              or dmPMInitDirectory.


DESCRIPTION
     dmPMGetSourceAUsage returns the usage bitmask of the source A.  Possible
     values are:

     #define DM_BUF_INPUT_DIRECT       0x0001  /* reads from void *data */
     #define DM_BUF_INPUT_TEXTURE      0x0002  /* uses OpenGL texturing */
     #define DM_BUF_INPUT_DRAWPIXELS        0x0004  /* uses OpenGL pixel
     drawing */ #define DM_BUF_INPUT_MOVIE        0x0008  /* used only by
     application */ #define DM_BUF_INPUT_ALL     0xFFFF  /* may use any kind
     of input */


     DM_BUF_INPUT_DIRECT         reads from void *data

     DM_BUF_INPUT_TEXTURE        uses OpenGL texturing

     DM_BUF_INPUT_DRAWPIXELS     uses OpenGL pixel drawing

     DM_BUF_INPUT_MOVIE          used only by application

     DM_BUF_INPUT_ALL            may use any kind of input


     dmPMGetSourceBUsage returns the usage bitmask of the source B (video
     transitions only).  Possible values are:
     DM_BUF_INPUT_DIRECT         reads from void *data

     DM_BUF_INPUT_TEXTURE        uses OpenGL texturing

     DM_BUF_INPUT_DRAWPIXELS     uses OpenGL pixel drawing

     DM_BUF_INPUT_MOVIE          used only by application

     DM_BUF_INPUT_ALL            may use any kind of input


     dmPMGetDestUsage returns the usage bitmask of the destination.  Possible
     values are:


     DM_BUF_OUTPUT_DIRECT     writes to void *data

     DM_BUF_OUTPUT_OPENGL     renders with OpenGL

     DM_BUF_OUTPUT_MOVIE      used only by application



CAVEATS
     Calling dmPMGetSourceAUsage, dmPMGetSourceBUsage, or dmPMGetDestUsage
     will cause the plugin to be loaded with dlopen(3) if it is not already
     loaded.


RETURN VALUES
     dmPMGetSourceAUsage will return the usage bitmask of the source A.
     dmPMGetSourceBUsage will return the usage bitmask of the source B.
     dmPMGetDestUsage will return the the usage bitmask of the destination.


SEE ALSO
     dmPMCreateManager(3dm), dmPMInitPlugin(3dm), dmGetError(3dm).