src/video/x11/SDL_x11yuv.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 12 Feb 2004 16:05:30 +0000
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parent 769 b8d311d90021
child 950 b7a5c1b64829
permissions -rw-r--r--
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2004 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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 "@(#) $Id$";
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#endif
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/* This is the XFree86 Xv extension implementation of YUV video overlays */
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#ifdef XFREE86_XV
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#include <stdlib.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#ifndef NO_SHARED_MEMORY
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <X11/extensions/XShm.h>
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#endif
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#include <XFree86/extensions/Xvlib.h>
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#include "SDL_error.h"
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#include "SDL_video.h"
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#include "SDL_x11yuv_c.h"
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#include "SDL_yuvfuncs.h"
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#define XFREE86_REFRESH_HACK
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#ifdef XFREE86_REFRESH_HACK
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#include "SDL_x11image_c.h"
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#endif
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/* Workaround when pitch != width */
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#define PITCH_WORKAROUND
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/* Fix for the NVidia GeForce 2 - use the last available adaptor */
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/*#define USE_LAST_ADAPTOR*/  /* Apparently the NVidia drivers are fixed */
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/* The functions used to manipulate software video overlays */
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static struct private_yuvhwfuncs x11_yuvfuncs = {
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	X11_LockYUVOverlay,
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	X11_UnlockYUVOverlay,
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	X11_DisplayYUVOverlay,
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	X11_FreeYUVOverlay
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};
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struct private_yuvhwdata {
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	int port;
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#ifndef NO_SHARED_MEMORY
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	int yuv_use_mitshm;
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	XShmSegmentInfo yuvshm;
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#endif
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	SDL_NAME(XvImage) *image;
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};
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#ifndef NO_SHARED_MEMORY
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/* Shared memory error handler routine */
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static int shm_error;
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static int (*X_handler)(Display *, XErrorEvent *) = NULL;
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static int shm_errhandler(Display *d, XErrorEvent *e)
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{
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        if ( e->error_code == BadAccess ) {
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        	shm_error = True;
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        	return(0);
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        } else
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		return(X_handler(d,e));
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}
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#endif /* !NO_SHARED_MEMORY */
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SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
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{
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	SDL_Overlay *overlay;
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	struct private_yuvhwdata *hwdata;
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	int xv_port;
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	int i, j, k;
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	int adaptors;
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	SDL_NAME(XvAdaptorInfo) *ainfo;
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	int bpp;
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#ifndef NO_SHARED_MEMORY
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	XShmSegmentInfo *yuvshm;
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#endif
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	/* Look for the XVideo extension with a valid port for this format */
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	xv_port = -1;
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	if ( (Success == SDL_NAME(XvQueryExtension)(GFX_Display, &j, &j, &j, &j, &j)) &&
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	     (Success == SDL_NAME(XvQueryAdaptors)(GFX_Display,
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	                                 RootWindow(GFX_Display, SDL_Screen),
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	                                 &adaptors, &ainfo)) ) {
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#ifdef USE_LAST_ADAPTOR
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		for ( i=0; i < adaptors; ++i )
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#else
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		for ( i=0; (i < adaptors) && (xv_port == -1); ++i )
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#endif /* USE_LAST_ADAPTOR */
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		{
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			/* Check to see if the visual can be used */
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			if ( BUGGY_XFREE86(<=, 4001) ) {
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				int visual_ok = 0;
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				for ( j=0; j<ainfo[i].num_formats; ++j ) {
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					if ( ainfo[i].formats[j].visual_id ==
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							SDL_Visual->visualid ) {
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						visual_ok = 1;
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						break;
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					}
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				}
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				if ( ! visual_ok ) {
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					continue;
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				}
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			}
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			if ( (ainfo[i].type & XvInputMask) &&
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			     (ainfo[i].type & XvImageMask) ) {
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				int num_formats;
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				SDL_NAME(XvImageFormatValues) *formats;
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				formats = SDL_NAME(XvListImageFormats)(GFX_Display,
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				              ainfo[i].base_id, &num_formats);
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#ifdef USE_LAST_ADAPTOR
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				for ( j=0; j < num_formats; ++j )
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#else
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				for ( j=0; (j < num_formats) && (xv_port == -1); ++j )
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#endif /* USE_LAST_ADAPTOR */
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				{
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					if ( (Uint32)formats[j].id == format ) {
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						for ( k=0; k < ainfo[i].num_ports; ++k ) {
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							if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) {
0
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								xv_port = ainfo[i].base_id+k;
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								break;
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							}
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						}
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					}
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				}
410
365f57b7c4ac *** empty log message ***
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				if ( formats ) {
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					XFree(formats);
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				}
0
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			}
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		}
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		SDL_NAME(XvFreeAdaptorInfo)(ainfo);
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	}
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813
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	/* Precalculate the bpp for the pitch workaround below */
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	switch (format) {
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	    /* Add any other cases we need to support... */
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	    case SDL_YUY2_OVERLAY:
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	    case SDL_UYVY_OVERLAY:
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	    case SDL_YVYU_OVERLAY:
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		bpp = 2;
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		break;
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	    default:
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		bpp = 1;
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		break;
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	}
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434
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#if 0
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    /*
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     * !!! FIXME:
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   175
     * "Here are some diffs for X11 and yuv.  Note that the last part 2nd
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   176
     *  diff should probably be a new call to XvQueryAdaptorFree with ainfo
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   177
     *  and the number of adaptors, instead of the loop through like I did."
434
ed58b98c0d9d Commented double-free buggy code. Will examine more closely later.
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   178
     *
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     *  ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this
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     *  for you, so we end up with a double-free. I need to look at this
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   181
     *  more closely...  --ryan.
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   182
     */
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   183
 	for ( i=0; i < adaptors; ++i ) {
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   184
 	  if (ainfo[i].name != NULL) Xfree(ainfo[i].name);
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   185
 	  if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats);
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   186
   	}
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   187
 	Xfree(ainfo);
434
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   188
#endif
429
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   189
0
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   190
	if ( xv_port == -1 ) {
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   191
		SDL_SetError("No available video ports for requested format");
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   192
		return(NULL);
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   193
	}
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   194
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   195
	/* Create the overlay structure */
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   196
	overlay = (SDL_Overlay *)malloc(sizeof *overlay);
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   197
	if ( overlay == NULL ) {
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
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   198
		SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
0
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   199
		SDL_OutOfMemory();
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   200
		return(NULL);
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   201
	}
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   202
	memset(overlay, 0, (sizeof *overlay));
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   203
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   204
	/* Fill in the basic members */
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   205
	overlay->format = format;
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   206
	overlay->w = width;
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   207
	overlay->h = height;
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   208
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   209
	/* Set up the YUV surface function structure */
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   210
	overlay->hwfuncs = &x11_yuvfuncs;
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   211
	overlay->hw_overlay = 1;
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   212
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   213
	/* Create the pixel data and lookup tables */
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   214
	hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
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   215
	overlay->hwdata = hwdata;
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   216
	if ( hwdata == NULL ) {
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
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   217
		SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
0
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   218
		SDL_OutOfMemory();
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   219
		SDL_FreeYUVOverlay(overlay);
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   220
		return(NULL);
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diff changeset
   221
	}
813
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   222
	hwdata->port = xv_port;
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   223
#ifndef NO_SHARED_MEMORY
0
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   224
	yuvshm = &hwdata->yuvshm;
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   225
	memset(yuvshm, 0, sizeof(*yuvshm));
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
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diff changeset
   226
	hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
813
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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   227
						   0, width, height, yuvshm);
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diff changeset
   228
#ifdef PITCH_WORKAROUND
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diff changeset
   229
	if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) {
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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   230
		/* Ajust overlay width according to pitch */ 
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diff changeset
   231
		XFree(hwdata->image);
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   232
		width = hwdata->image->pitches[0] / bpp;
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   233
		hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
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diff changeset
   234
							   0, width, height, yuvshm);
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diff changeset
   235
	}
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diff changeset
   236
#endif /* PITCH_WORKAROUND */
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   237
	hwdata->yuv_use_mitshm = (hwdata->image != NULL);
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diff changeset
   238
	if ( hwdata->yuv_use_mitshm ) {
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   239
		yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   240
				       IPC_CREAT | 0777);
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   241
		if ( yuvshm->shmid >= 0 ) {
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   242
			yuvshm->shmaddr = (char *)shmat(yuvshm->shmid, 0, 0);
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   243
			yuvshm->readOnly = False;
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diff changeset
   244
			if ( yuvshm->shmaddr != (char *)-1 ) {
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   245
				shm_error = False;
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   246
				X_handler = XSetErrorHandler(shm_errhandler);
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   247
				XShmAttach(GFX_Display, yuvshm);
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   248
				XSync(GFX_Display, True);
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   249
				XSetErrorHandler(X_handler);
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diff changeset
   250
				if ( shm_error )
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   251
					shmdt(yuvshm->shmaddr);
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diff changeset
   252
			} else {
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diff changeset
   253
				shm_error = True;
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   254
			}
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   255
			shmctl(yuvshm->shmid, IPC_RMID, NULL);
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diff changeset
   256
		} else {
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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   257
			shm_error = True;
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   258
		}
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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   259
		if ( shm_error ) {
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   260
			XFree(hwdata->image);
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   261
			hwdata->yuv_use_mitshm = 0;
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diff changeset
   262
		} else {
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   263
			hwdata->image->data = yuvshm->shmaddr;
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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diff changeset
   264
		}
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   265
	}
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   266
	if ( !hwdata->yuv_use_mitshm )
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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   267
#endif /* NO_SHARED_MEMORY */
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   268
	{
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   269
		hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format,
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   270
							0, width, height);
0
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   271
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   272
#ifdef PITCH_WORKAROUND
813
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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   273
		if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) {
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   274
			/* Ajust overlay width according to pitch */ 
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   275
			XFree(hwdata->image);
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   276
			width = hwdata->image->pitches[0] / bpp;
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			hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format,
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								0, width, height);
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		}
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#endif /* PITCH_WORKAROUND */
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		if ( hwdata->image == NULL ) {
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			SDL_SetError("Couldn't create XVideo image");
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			SDL_FreeYUVOverlay(overlay);
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			return(NULL);
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		}
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		hwdata->image->data = malloc(hwdata->image->data_size);
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		if ( hwdata->image->data == NULL ) {
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			SDL_OutOfMemory();
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			SDL_FreeYUVOverlay(overlay);
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			return(NULL);
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		}
0
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	}
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	/* Find the pitch and offset values for the overlay */
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	overlay->planes = hwdata->image->num_planes;
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	overlay->pitches = (Uint16 *)malloc(overlay->planes * sizeof(Uint16));
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	overlay->pixels = (Uint8 **)malloc(overlay->planes * sizeof(Uint8 *));
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	if ( !overlay->pitches || !overlay->pixels ) {
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		SDL_OutOfMemory();
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		SDL_FreeYUVOverlay(overlay);
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		return(NULL);
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	}
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	for ( i=0; i<overlay->planes; ++i ) {
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		overlay->pitches[i] = hwdata->image->pitches[i];
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		overlay->pixels[i] = (Uint8 *)hwdata->image->data +
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		                              hwdata->image->offsets[i];
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	}
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#ifdef XFREE86_REFRESH_HACK
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	/* Work around an XFree86 X server bug (?)
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	   We can't perform normal updates in windows that have video
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	   being output to them.  See SDL_x11image.c for more details.
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	 */
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	X11_DisableAutoRefresh(this);
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#endif
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	/* We're all done.. */
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	return(overlay);
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}
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int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
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{
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	return(0);
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}
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void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
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{
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	return;
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}
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int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
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{
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	struct private_yuvhwdata *hwdata;
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	hwdata = overlay->hwdata;
813
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#ifndef NO_SHARED_MEMORY
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	if ( hwdata->yuv_use_mitshm ) {
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		SDL_NAME(XvShmPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
0
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	              hwdata->image, 0, 0, overlay->w, overlay->h,
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	              dstrect->x, dstrect->y, dstrect->w, dstrect->h, False);
813
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	}
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	else
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#endif
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	{
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		SDL_NAME(XvPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
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				     hwdata->image, 0, 0, overlay->w, overlay->h,
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				     dstrect->x, dstrect->y, dstrect->w, dstrect->h);
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	}
0
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	XSync(GFX_Display, False);
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	return(0);
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}
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void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
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{
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	struct private_yuvhwdata *hwdata;
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	hwdata = overlay->hwdata;
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	if ( hwdata ) {
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		SDL_NAME(XvUngrabPort)(GFX_Display, hwdata->port, CurrentTime);
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#ifndef NO_SHARED_MEMORY
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		if ( hwdata->yuv_use_mitshm ) {
0
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			XShmDetach(GFX_Display, &hwdata->yuvshm);
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			shmdt(hwdata->yuvshm.shmaddr);
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		}
813
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#endif
0
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		if ( hwdata->image ) {
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			XFree(hwdata->image);
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		}
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		free(hwdata);
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	}
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	if ( overlay->pitches ) {
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		free(overlay->pitches);
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		overlay->pitches = NULL;
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   374
	}
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	if ( overlay->pixels ) {
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   376
		free(overlay->pixels);
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   377
		overlay->pixels = NULL;
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   378
	}
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   379
#ifdef XFREE86_REFRESH_HACK
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	X11_EnableAutoRefresh(this);
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#endif
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}
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#endif /* XFREE86_XV */