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Massive Quartz input enhancements from Darrell Walisser. His email: Enclosed is a patch that addresses the following: --Various minor cleanups. Removed dead/obsolete code, made some style cleanups --Mouse Events Now keep track of what button(s) were pressed so we know when to send the mouse up event. This fixes the case where the mouse is dragged outside of the game window and released (in which case we want to send the mouse up event even though the mouse is outside the game window). --Input Grabbing Here is my take on the grabbing situation, which is the basis for the new implementation. There are 3 grab states, ungrabbed (UG), visible (VG), and invisible (IG). Both VG and IG keep the mouse constrained to the window and produce relative motion events. In VG the cursor is visible (duh), in IG it is not. In VG, absolute motion events also work. There are 6 actions that can affect grabbing: 1. Set Fullscreen/Window (F/W). In fullscreen, a visible grab should do nothing. However, a fullscreen visible grab can be treated just like a windowed visible grab, which is what I have done to help simplify things. 2. Cursor hide/show (H/S). If the cursor is hidden when grabbing, the grab is an invisible grab. If the cursor is visible, the grab should just constrain the mouse to the window. 3. Input grab/ungrab(G/U). If grabbed, the cursor should be confined to the window as should the keyboard input. On Mac OS X, the keyboard input is implicitly grabbed by confining the cursor, except for command-tab which can switch away from the application. Should the window come to the foreground if the application is deactivated and grab input is called? This isn't necessary in this implementation because the grab state will be asserted upon activation. Using my notation, these are all the cases that need to be handled (state + action = new state). UG+U = UG UG+G = VG or IG, if cursor is visible or not UG+H = UG UG+S = UG VG+U = UG VG+G = VG VG+H = IG VG+S = VG IG+U = UG IG+G = IG IG+H = IG IG+S = VG The cases that result in the same state can be ignored in the code, which cuts it down to just 5 cases. Another issue is what happens when the app loses/gains input focus from deactivate/activate or iconify/deiconify. I think that if input focus is ever lost (outside of SDL's control), the grab state should be suspended and the cursor should become visible and active again. When regained, the cursor should reappear in its original location and/or grab state. This way, when reactivating the cursor is still in the same position as before so apps shouldn't get confused when the next motion event comes in. This is what I've done in this patch.
author Ryan C. Gordon <icculus@icculus.org>
date Fri, 27 Dec 2002 20:52:41 +0000
parents bce7171e7a85
children 8e3ce997621c
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* This is the QNX Realtime Platform version for SDL YUV video overlays */

#include <stdlib.h>
#include <string.h>
#ifndef bool
#define bool char
#define TRUE 1
#define FALSE 0
#endif
#include <errno.h>

#include <Ph.h>
#include <Pt.h>

#include "SDL_error.h"
#include "SDL_video.h"
#include "SDL_phyuv_c.h"
#include "SDL_yuvfuncs.h"

#if 0  //just for reference
/* YUV data formats			FourCC		   Layout		H sample (YUV)	V sample (YUV)	BPP */
#define Pg_VIDEO_FORMAT_IYU1		0x31555949	/* U2Y2Y2V2Y2Y2		144		111		12  */
#define Pg_VIDEO_FORMAT_IYU2		0x32555949	/* U4Y4V4U4Y4V4		111		111		24  */
#define Pg_VIDEO_FORMAT_UYVY		0x59565955	/* U8Y8V8Y8		122		111		16  */
#define Pg_VIDEO_FORMAT_YUY2		0x32595559	/* Y8U8Y8V8		122		111		16  */
#define Pg_VIDEO_FORMAT_YVYU		0x55595659	/* Y8V8Y8U8		122		111		16  */
#define Pg_VIDEO_FORMAT_V422		0x56343232	/* V8Y8U8Y8		122		111		16  */
#define Pg_VIDEO_FORMAT_CLJR		0x524a4c43	/* V6U6Y5Y5Y5Y5		133		111		8   */
#define Pg_VIDEO_FORMAT_YVU9		0x39555659	/* Planar YVU		144		144		9   */
#define Pg_VIDEO_FORMAT_YV12		0x32315659	/* Planar YUV		122		122		12  */

/* There seems to be no FourCC that matches this */
#define Pg_VIDEO_FORMAT_YUV420		0x00000100	/* Planar YUV		122		111		16  */

/* These formats are the same as YV12, except the U and V planes do not have to contiguously follow the Y plane */
/* but they're all the same to us, since we always have 3 plane pointers */
#define Pg_VIDEO_FORMAT_CLPL	Pg_VIDEO_FORMAT_YV12	/* Cirrus Logic Planar format */
#define Pg_VIDEO_FORMAT_VBPL	Pg_VIDEO_FORMAT_YV12	/* VooDoo Banshee planar format */

#define SDL_YV12_OVERLAY	0x32315659	/* Planar mode: Y + V + U */
#define SDL_IYUV_OVERLAY	0x56555949	/* Planar mode: Y + U + V */
#define SDL_YUY2_OVERLAY	0x32595559	/* Packed mode: Y0+U0+Y1+V0 */
#define SDL_UYVY_OVERLAY	0x59565955	/* Packed mode: U0+Y0+V0+Y1 */
#define SDL_YVYU_OVERLAY	0x55595659	/* Packed mode: Y0+V0+Y1+U0 */

#endif 


#define OVERLAY_STATE_UNINIT  0
#define OVERLAY_STATE_ACTIVE 1

/* The functions used to manipulate software video overlays */
static struct private_yuvhwfuncs ph_yuvfuncs = {
	ph_LockYUVOverlay,
	ph_UnlockYUVOverlay,
	ph_DisplayYUVOverlay,
	ph_FreeYUVOverlay
};


typedef struct {
  int id;
  int width, height;
  int data_size;              /* bytes */
  int num_planes;
  int *pitches;               /* bytes */
  int *offsets;               /* bytes */
  char *data;
  void *obdata;     
} XvImage;


struct private_yuvhwdata {
	XvImage *image;	
	FRAMEDATA *CurrentFrameData;
	FRAMEDATA *FrameData0;
	FRAMEDATA *FrameData1;
	PgScalerProps_t	props;
	PgScalerCaps_t	caps;
	PgVideoChannel_t *channel;
	SDL_Rect CurrentWindow;
	long format;
	int screen_width;
	int screen_height ;
	int screen_bpp ;    //2
	bool planar;
	bool scaler_on ;
	int current;
	long YStride;
	long VStride;
	long UStride;
	long chromakey;
	unsigned long State;
	long flags;
};

extern PgVideoChannel_t * PgCreateVideoChannel(unsigned type, unsigned flags);
extern int PgGetScalerCapabilities( PgVideoChannel_t *channel, int format_index, PgScalerCaps_t *vcaps );
extern int PgConfigScalerChannel(PgVideoChannel_t *channel, PgScalerProps_t *props);
extern void PgDestroyVideoChannel(PgVideoChannel_t *channel);
extern PgColor_t PgGetOverlayChromaColor(void);

void
grab_ptrs2(PgVideoChannel_t *channel, FRAMEDATA *Frame0, FRAMEDATA *Frame1 )
{

	/* Buffers have moved; re-obtain the pointers */
	Frame0->Y = (unsigned char *)PdGetOffscreenContextPtr(channel->yplane1);
	Frame1->Y = (unsigned char *)PdGetOffscreenContextPtr(channel->yplane2);
	Frame0->U = (unsigned char *)PdGetOffscreenContextPtr(channel->uplane1);
	Frame1->U = (unsigned char *)PdGetOffscreenContextPtr(channel->uplane2);
	Frame0->V = (unsigned char *)PdGetOffscreenContextPtr(channel->vplane1);
	Frame1->V = (unsigned char *)PdGetOffscreenContextPtr(channel->vplane2);

}

SDL_Overlay* ph_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
{
	SDL_Overlay *overlay;
	struct private_yuvhwdata *hwdata;
	int xv_port;
	int rtncode;
//	PhRect_t rect;
//	PhSysInfo_t info;
//	PhRegion_t region;
//	short x, y;
	PtArg_t argt;
	int i =0;
//	bool bCont = TRUE;
	int Priority[20];
	int Type[20];
	int entries, select, highest;

	PhDCSetCurrent(0);  //Need to set draw context to window esp. if we we in Offscreeen mode

	/* Create the overlay structure */
	overlay = (SDL_Overlay *)malloc(sizeof(SDL_Overlay));
        memset(overlay, 0x00, sizeof(SDL_Overlay));
	if ( overlay == NULL ) {
		SDL_OutOfMemory();
		return(NULL);
	}
	memset(overlay, 0, (sizeof *overlay));

	/* Fill in the basic members */
	overlay->format = format;
	overlay->w = width;
	overlay->h = height;
	
	/* Set up the YUV surface function structure */
	overlay->hwfuncs = &ph_yuvfuncs;

	/* Create the pixel data and lookup tables */
	hwdata = (struct private_yuvhwdata *)malloc(sizeof(struct private_yuvhwdata));
        memset(hwdata, 0x00, sizeof(struct private_yuvhwdata));
	overlay->hwdata = hwdata;
	if ( hwdata == NULL ) {
		SDL_OutOfMemory();
		SDL_FreeYUVOverlay(overlay);
		return(NULL);
	}
	
    if (overlay->hwdata->channel == NULL)
    {
        if ((overlay->hwdata->channel = PgCreateVideoChannel(Pg_VIDEO_CHANNEL_SCALER,0)) == NULL) 
        {
            SDL_SetError("ph_CreateYUVOverlay(): Create channel failed: %s\n", strerror( errno ));
            free(overlay->hwdata);
            free(overlay);
            return (NULL);
        }
    }

    overlay->hwdata->CurrentWindow.x = 0;
    overlay->hwdata->CurrentWindow.y = 0;
    overlay->hwdata->CurrentWindow.w = 320;
    overlay->hwdata->CurrentWindow.h = 240;

    overlay->hwdata->State = OVERLAY_STATE_UNINIT;

    overlay->hwdata->screen_bpp = 2;
    overlay->hwdata->scaler_on = FALSE;
    overlay->hwdata->screen_width = 1024;
    overlay->hwdata->screen_height  = 768;

    overlay->hwdata->FrameData0 = (FRAMEDATA *) malloc((size_t)(sizeof(FRAMEDATA)));
    overlay->hwdata->FrameData1 = (FRAMEDATA *) malloc((size_t)(sizeof(FRAMEDATA)));
    memset(overlay->hwdata->FrameData0, 0x00, (size_t)(sizeof(FRAMEDATA)));
    memset(overlay->hwdata->FrameData1, 0x00, (size_t)(sizeof(FRAMEDATA)));

    overlay->hwdata->caps.size = sizeof(overlay->hwdata->caps);

//Note you really don't need to do this for SDL as you are given a format, but this is a good example

    xv_port = -1;
    i=0;

while(PgGetScalerCapabilities(overlay->hwdata->channel, i++, &(overlay->hwdata->caps)) == 0) 
{
		if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_YV12) //in SDL
		{
			
			Priority[i-1] = 0;
			Type[i-1] = Pg_VIDEO_FORMAT_YV12;
			if(format == Pg_VIDEO_FORMAT_YV12)
			{
				overlay->hwdata->props.format =  Pg_VIDEO_FORMAT_YV12;
				xv_port = 1; //supported
				Priority[i-1] = 100; //force selected
			}
			
		}
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_YVU9) //in SDL
		{
			
			Priority[i-1] = 0;
			Type[i-1] = Pg_VIDEO_FORMAT_YVU9;			
			if(format == Pg_VIDEO_FORMAT_YVU9)
			{
				overlay->hwdata->props.format =  Pg_VIDEO_FORMAT_YVU9;
				xv_port = 1; //supported
				Priority[i-1] = 100; //force selected
			}
			
		}
#if 0 //this part of SDL is YUV specific
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_RGB555)
		{
			
			Priority[i-1] = 3;
			Type[i-1] = Pg_VIDEO_FORMAT_RGB555;			
		}
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_RGB565)
		{
			
			Priority[i-1] =  2;
			Type[i-1] = Pg_VIDEO_FORMAT_RGB565;			
		}
		else if(overlay->hwdata->caps.format == Pg_VIDEO_FORMAT_RGB8888)
		{
			
			Priority[i-1] = 1;
			Type[i-1] = Pg_VIDEO_FORMAT_RGB8888;			
		}
#endif
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_IYU1)
		{
			
			Priority[i-1] = 0;
			Type[i-1] = Pg_VIDEO_FORMAT_IYU1;
			
		}
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_IYU2)
		{
			
			Priority[i-1] = 0;
			Type[i-1] = Pg_VIDEO_FORMAT_IYU2;			
		}

		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_UYVY) //in SDL
		{
			
			Priority[i-1] = 7;
			Type[i-1] = Pg_VIDEO_FORMAT_UYVY;
			if(format == Pg_VIDEO_FORMAT_UYVY)
			{
				overlay->hwdata->props.format =  Pg_VIDEO_FORMAT_UYVY;
				xv_port = 1; //supported
				Priority[i-1] = 100; //force selected
			}
			
		}
		else if(overlay->hwdata->caps.format == Pg_VIDEO_FORMAT_YUY2) //in SDL
		{
			
			Priority[i-1] = 8;
			Type[i-1] = Pg_VIDEO_FORMAT_YUY2;			
			if(format == Pg_VIDEO_FORMAT_YUY2)
			{
				overlay->hwdata->props.format =  Pg_VIDEO_FORMAT_YUY2;
				xv_port = 1; //supported
				Priority[i-1] = 100; //force selected
			}
			
		}
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_YVYU) //in SDL
		{
			
			Priority[i-1] = 4;
			Type[i-1] = Pg_VIDEO_FORMAT_YVYU;	
			
			if(format == Pg_VIDEO_FORMAT_YVYU)
			{
				overlay->hwdata->props.format =  Pg_VIDEO_FORMAT_YVYU;
				xv_port = 1; //supported
				Priority[i-1] = 100; //force selected
				
			}
		
		}
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_V422)
		{
			
			Priority[i-1] = 5;
			Type[i-1] = Pg_VIDEO_FORMAT_V422;			
		}		
		else if(overlay->hwdata->caps.format  == Pg_VIDEO_FORMAT_CLJR)
		{
			
			Priority[i-1] = 6;
			Type[i-1] = Pg_VIDEO_FORMAT_CLJR;		
		}	
		else
		{
		
		Priority[i-1] = 0;
		}
			
overlay->hwdata->caps.size = sizeof(overlay->hwdata->caps);
}

	if ( xv_port == -1 )
	{
		SDL_SetError("No available video ports for requested format");
		return(NULL);
	}
 
//Pick the highest priority format
entries = i -2;
highest = Priority[0]; //make first entry top at begining
select = 0;

for (i = 1; i < entries; i++)
{


   if(Priority[i] > highest)
   {
      highest = Priority[i];
      select  = i;
   }
} 

 
 
 overlay->hwdata->caps.size = sizeof (overlay->hwdata->caps	);
PgGetScalerCapabilities(overlay->hwdata->channel, select, &(overlay->hwdata->caps));
overlay->hwdata->props.format = overlay->hwdata->caps.format ;

    overlay->hwdata->format = overlay->hwdata->props.format;  //to make easier for apps to use


	overlay->hwdata->props.size = sizeof (overlay->hwdata->props);
    overlay->hwdata->props.src_dim.w = width;   
    overlay->hwdata->props.src_dim.h = height;   
	
	overlay->hwdata->chromakey = PgGetOverlayChromaColor();

	// Set chromakey in video widget so we can see overlay data
	/* I don't know where the container widget is!!!, I guess it is in hidden->window*/
	
	PtEnter(0);
	PtSetArg( &argt, Pt_ARG_FILL_COLOR, overlay->hwdata->chromakey, 0 );
	PtSetResources( window, 1, &argt ); 
	PtLeave(0);


	fflush( stderr );

	overlay->hwdata->props.viewport.ul.x = overlay->hwdata->CurrentWindow.x;
	overlay->hwdata->props.viewport.ul.y = overlay->hwdata->CurrentWindow.y;
	//Next line MIGHT have x and y reversed!!!!!!!!!!!!
	overlay->hwdata->props.viewport.lr.x = overlay->hwdata->CurrentWindow.x +overlay->hwdata->CurrentWindow.w;
	overlay->hwdata->props.viewport.lr.y = overlay->hwdata->CurrentWindow.y + overlay->hwdata->CurrentWindow.h;
		


	overlay->hwdata->props.flags =
	    ~Pg_SCALER_PROP_SCALER_ENABLE | Pg_SCALER_PROP_DOUBLE_BUFFER ;

	if (overlay->hwdata->chromakey) {
		overlay->hwdata->props.flags |= Pg_SCALER_PROP_CHROMA_ENABLE;
		overlay->hwdata->props.color_key = overlay->hwdata->chromakey;
		overlay->hwdata->props.color_key_mask = 0xffffff;
	} 
	else
	{
		overlay->hwdata->props.flags &= ~Pg_SCALER_PROP_CHROMA_ENABLE;
	}


	overlay->hwdata->scaler_on = FALSE;



 rtncode =    PgConfigScalerChannel(overlay->hwdata->channel, &(overlay->hwdata->props));	
	switch(rtncode)
	{
	case -1:
		SDL_SetError("PgConfigScalerChannel failed\n");
		SDL_FreeYUVOverlay(overlay);
		return(NULL);
   		break;
	case 1:
		grab_ptrs2(overlay->hwdata->channel, overlay->hwdata->FrameData0, overlay->hwdata->FrameData1);
		break;
	case 0:
	default:
   		break;
	}


	grab_ptrs2(overlay->hwdata->channel, overlay->hwdata->FrameData0, overlay->hwdata->FrameData1);

if(overlay->hwdata->channel->yplane1 != NULL)			
	overlay->hwdata->YStride = overlay->hwdata->channel->yplane1->pitch;
if(overlay->hwdata->channel->uplane1 != NULL)			
	overlay->hwdata->UStride = overlay->hwdata->channel->uplane1->pitch;
if(overlay->hwdata->channel->vplane1 != NULL)			
	overlay->hwdata->VStride = overlay->hwdata->channel->vplane1->pitch;


	overlay->hwdata->current = PgNextVideoFrame(overlay->hwdata->channel);



	if (overlay->hwdata->current == -1)
	{
		SDL_SetError("PgNextFrame failed, bailing out\n");
		SDL_FreeYUVOverlay(overlay);
		return(NULL);
	}
        
        //set current frame for double buffering
	if(overlay->hwdata->current == 0)
	{
		overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData0;
	}
	else
	{
		overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData1;
	}
    
	overlay->hwdata->State = OVERLAY_STATE_ACTIVE;


	/* We're all done.. */
	return(overlay);
}

int ph_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
{
//int rtncode;

if(overlay == NULL)
   return 0;

//set current frame for double buffering
	if(overlay->hwdata->current == 0)
	{
		overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData0;
	}
	else
	{
		overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData1;
	}

	//Lock gets the pointer and passes it to the app. The app writes all yuv data into overlay->pixels
//Note this is defined as Uint8 **pixels;				/* Read-write */	
	overlay->pixels = &overlay->hwdata->CurrentFrameData->Y; 
	overlay->pitches = (Uint16*) &(overlay->hwdata->YStride);
		
	return(0);
}

void ph_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
{
int rtncode;

if(overlay == NULL)
   return ;

		if(overlay->hwdata->scaler_on == FALSE) 
		{
			
		
		overlay->hwdata->props.flags |= Pg_SCALER_PROP_SCALER_ENABLE;
        rtncode =PgConfigScalerChannel(overlay->hwdata->channel, &(overlay->hwdata->props));
        	switch(rtncode)
			{
				case -1:
					SDL_SetError("PgConfigScalerChannel failed\n");
					SDL_FreeYUVOverlay(overlay);
   					break;
				case 1:
					grab_ptrs2(overlay->hwdata->channel, overlay->hwdata->FrameData0, overlay->hwdata->FrameData1);
					overlay->hwdata->scaler_on = TRUE;
					break;
				case 0:
					default:
					overlay->hwdata->scaler_on = TRUE;
   					break;
			}
//This would be the best place to draw chromakey but we do not have a SDL_Surface in the args
//This means we might see a chromakey flicker at startup
		}
		overlay->hwdata->current = PgNextVideoFrame(overlay->hwdata->channel);


	if (overlay->hwdata->current == -1) {
		SDL_SetError("PgNextVideoFrame failed\n");
		SDL_FreeYUVOverlay(overlay);	
		return;	
	}

	overlay->pixels = NULL;
}

int ph_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
{
int rtncode;

if(overlay == NULL)
   return 0;


	/*SDL_Rect CurrentWindow*/
//If CurrentWindow has change, move the viewport
if((overlay->hwdata->CurrentWindow.x != dstrect->x) ||
  (overlay->hwdata->CurrentWindow.y != dstrect->y) ||
  (overlay->hwdata->CurrentWindow.w != dstrect->w) ||
  (overlay->hwdata->CurrentWindow.h != dstrect->h))
{
		if(overlay->hwdata->State == OVERLAY_STATE_UNINIT)
		return -1;

	overlay->hwdata->CurrentWindow.x = dstrect->x;
  	overlay->hwdata->CurrentWindow.y = dstrect->y;
  	overlay->hwdata->CurrentWindow.w = dstrect->w;
  	overlay->hwdata->CurrentWindow.h = dstrect->h;

	overlay->hwdata->props.viewport.ul.x = overlay->hwdata->CurrentWindow.x;
	overlay->hwdata->props.viewport.ul.y = overlay->hwdata->CurrentWindow.y;
	//Next line MIGHT have x and y reversed!!!!!!!!!!!!
	overlay->hwdata->props.viewport.lr.x = overlay->hwdata->CurrentWindow.x +overlay->hwdata->CurrentWindow.w;
	overlay->hwdata->props.viewport.lr.y = overlay->hwdata->CurrentWindow.y + overlay->hwdata->CurrentWindow.h;

	
     rtncode = PgConfigScalerChannel(overlay->hwdata->channel, &(overlay->hwdata->props));

	switch(rtncode)
	{
	case -1:
		SDL_SetError("PgConfigScalerChannel failed\n");
		SDL_FreeYUVOverlay(overlay);
		return(0);
   		break;
	case 1:
		grab_ptrs2(overlay->hwdata->channel, overlay->hwdata->FrameData0, overlay->hwdata->FrameData1);
		break;
	case 0:
	default:
   		break;
	}
}


//JB the X11 file did this. We do this in SDL_unlock, we need to confirm that lock and unlock are called for each frame!
//	XvShmPutImage(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
//	              hwdata->image, 0, 0, overlay->w, overlay->h,
//	              dstrect->x, dstrect->y, dstrect->w, dstrect->h, False);	           
/*  This is what this call is
int XvShmPutImage (
   Display *dpy,
   XvPortID port,
   Drawable d,
   GC gc,
   XvImage *image,
   int src_x,
   int src_y,
   unsigned int src_w,
   unsigned int src_h,
   int dest_x, 
   int dest_y,
   unsigned int dest_w,
   unsigned int dest_h,
   Bool send_event
)
*/

	return(0);
}

void ph_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
{
	//struct private_yuvhwdata *hwdata;

	if(overlay == NULL)
		return;
	
	if(overlay->hwdata == NULL)
		return;
	
	overlay->hwdata->State = OVERLAY_STATE_UNINIT;

	if( overlay->hwdata->channel == NULL )
	{
		return;
	}	

	PgDestroyVideoChannel(overlay->hwdata->channel);

	overlay->hwdata->channel = NULL;
	overlay->hwdata->CurrentFrameData = NULL;  
	
	free(overlay->hwdata->FrameData0);
	free(overlay->hwdata->FrameData1);
	overlay->hwdata->FrameData0 = NULL;
	overlay->hwdata->FrameData1 = NULL;
	free(overlay->hwdata);

}