// this is the drawproc that vfw calls. It basically just hands
// stuff off to other functions later in this file. A few things
// are handled here. This is message-handling proc just like a
// Window Proc or a VBX Control Proc...
LONG FAR PASCAL _export ICAVIDrawProc(DWORD id, HDRVR hDriver,
UINT uiMessage, LPARAM lParam1, LPARAM lParam2)
{
PINSTINFO pi = (PINSTINFO)id;
switch (uiMessage)
{
case DRV_LOAD:
case DRV_FREE:
return 1;
case DRV_OPEN:
if (lParam2 == 0L)
{
// Uh-oh, no data to use...
return 1;
}
return AVIDrawOpen((ICOPEN FAR *)lParam2);
case DRV_CLOSE:
return AVIDrawClose(pi);
case DRV_QUERYCONFIGURE:
return 0;
case DRV_CONFIGURE:
return 1;
case ICM_CONFIGURE:
case ICM_ABOUT:
return ICERR_UNSUPPORTED;
case ICM_GETSTATE:
return 0L;
case ICM_GETINFO:
return AVIDrawGetInfo((ICINFO FAR *)lParam1, lParam2);
case ICM_DRAW_QUERY:
return AVIDrawQuery(pi, (LPBITMAPINFOHEADER)lParam1);
case ICM_DRAW_SUGGESTFORMAT:
return AVIDrawSuggestFormat(pi, (ICDRAWSUGGEST FAR *) lParam1, lParam2);
case ICM_DRAW_BEGIN:
return AVIDrawBegin(pi, (ICDRAWBEGIN FAR *) lParam1, lParam2);
case ICM_DRAW_REALIZE:
pi->hdc = (HDC) lParam1;
if (!pi->hdc || !pi->hdd)
{
// we aren't initialized yet.
break;
}
return DrawDibRealize(pi->hdd, pi->hdc, (BOOL) lParam2);
case ICM_DRAW_GET_PALETTE:
if (!pi->hdd)
{
break;
}
return (LONG) (UINT) DrawDibGetPalette(pi->hdd);
case ICM_DRAW:
return AVIDraw(pi, (ICDRAW FAR *)lParam1, lParam2);
case ICM_DRAW_CHANGEPALETTE:
return AVIDrawChangePalette(pi, (LPBITMAPINFOHEADER) lParam1);
case ICM_DRAW_END:
return AVIDrawEnd(pi);
case DRV_DISABLE:
case DRV_ENABLE:
return 1;
case DRV_INSTALL:
case DRV_REMOVE:
return 1;
}
if (uiMessage < DRV_USER)
{
return DefDriverProc(id,hDriver,uiMessage,lParam1,lParam2);
}
else
{
return ICERR_UNSUPPORTED;
}
}
//***************************************************************************
long FAR PASCAL EXPORT MCIDrawProc(DWORD id, HDRVR hDriver, UINT message, LPARAM lParam1, LPARAM lParam2)
//***************************************************************************
{
PINSTINFO pi;
switch (message)
{
// First, all the messages we ignore
case DRV_LOAD:
case DRV_FREE:
case DRV_CONFIGURE:
case DRV_DISABLE:
case DRV_ENABLE:
case DRV_INSTALL:
case DRV_REMOVE:
return 1L; //ICERR_UNSUPPORTED; // JMM try unsupported instead of 1L
case ICM_CONFIGURE:
case ICM_ABOUT:
case ICM_DRAW_START_PLAY:
return ICERR_UNSUPPORTED;
// Next, all the messages we ignore and just return ICERR_OK (0):
// Note, these may be used to store state information.
// It is unclear if they will definitetly be called.
case DRV_QUERYCONFIGURE:
case ICM_GETSTATE:
case ICM_SETSTATE:
case ICM_DRAW_QUERY: // Determine if the input can be processed
case ICM_DRAW_SUGGESTFORMAT: // Suggest the output format
case ICM_DRAW_END: // Cleanup after a draw operation
return ICERR_OK;
// The draw messages we care about
case DRV_OPEN: // Open the rendering driver
return AVIDrawOpen((ICOPEN FAR *)lParam2);
case ICM_DRAW_BEGIN: // Prepare to draw the video data
return AVIDrawBegin((PINSTINFO)id, (ICDRAWBEGIN FAR *) lParam1, lParam2);
case ICM_GETINFO:
return AVIDrawGetInfo((ICINFO FAR *)lParam1, lParam2);
case ICM_DRAW: // Draw the video data
return AVIDraw((PINSTINFO)id, (ICDRAW FAR *)lParam1, lParam2);
case ICM_DRAW_CHANGEPALETTE:
return AVIDrawChangePalette((PINSTINFO)id, (LPBITMAPINFOHEADER) lParam1);
case ICM_DRAW_GET_PALETTE:
if ( !(pi = (PINSTINFO)id) ) return ICERR_UNSUPPORTED;
if (!pi->hdc || !pi->hdd) return ICERR_UNSUPPORTED;
return (UINT)DrawDibGetPalette(pi->hdd);
case ICM_DRAW_REALIZE:
if ( !(pi = (PINSTINFO)id) ) return ICERR_UNSUPPORTED;
pi->hdc = (HDC)lParam1;
if (!pi->hdc || !pi->hdd) return ICERR_UNSUPPORTED;
return DrawDibRealize(pi->hdd, pi->hdc, (BOOL) lParam2);
case DRV_CLOSE: // Close the rendering driver
return AVIDrawClose((PINSTINFO)id);
default:
if (message < DRV_USER)
return DefDriverProc(id, hDriver, message, lParam1, lParam2);
else
return ICERR_UNSUPPORTED;
}
return ICERR_UNSUPPORTED;
}