summaryrefslogtreecommitdiffstats
path: root/libvo/vo_xv.c
blob: 9d40f4994a9bce61dbac9a2e31d0b2754e09bd93 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895

// Number of buffers _FOR_DOUBLEBUFFERING_MODE_
// Use option -double to enable double buffering! (default: single buffer)
#define NUM_BUFFERS 2

/*
 * vo_xv.c, X11 Xv interface
 *
 * Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved.
 *
 * Hacked into mpeg2dec by
 *
 * Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
 *
 * Xv image suuport by Gerd Knorr <kraxel@goldbach.in-berlin.de>
 * fullscreen support by Pontscho
 * double buffering support by A'rpi
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "config.h"
#include "mp_msg.h"
#include "video_out.h"
#include "video_out_internal.h"

LIBVO_EXTERN(xv)

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <errno.h>

#include "x11_common.h"

#include "fastmemcpy.h"
#include "sub.h"
#include "aspect.h"

#include "../postproc/rgb2rgb.h"

#ifdef HAVE_NEW_GUI
#include "../Gui/interface.h"
#endif

static vo_info_t vo_info =
{
        "X11/Xv",
        "xv",
        "Gerd Knorr <kraxel@goldbach.in-berlin.de>",
        ""
};

extern int verbose;

/* local data */
static unsigned char *ImageData;

/* X11 related variables */
static XImage *myximage;
static int depth, bpp, mode;
static XWindowAttributes attribs;

#include <X11/extensions/Xv.h>
#include <X11/extensions/Xvlib.h>
// FIXME: dynamically allocate this stuff
static void allocate_xvimage(int);
static unsigned int ver,rel,req,ev,err;
static unsigned int formats, adaptors,i,xv_port,xv_format;
static XvAdaptorInfo        *ai;
static XvImageFormatValues  *fo;

static int current_buf=0;
static int num_buffers=1; // default
static XvImage* xvimage[NUM_BUFFERS];

#include <sys/ipc.h>
#ifdef HAVE_SHM
#include <sys/shm.h>
#include <X11/extensions/XShm.h>

/* since it doesn't seem to be defined on some platforms */
int XShmGetEventBase(Display*);

static XShmSegmentInfo Shminfo[NUM_BUFFERS];
static int Shmem_Flag;
#endif

//static int Quiet_Flag; <-- What is that for ? Albeu.
static int gXErrorFlag;
static int CompletionType = -1;

static uint32_t image_width;
static uint32_t image_height;
static uint32_t image_format;
static int flip_flag;

static Window                 mRoot;
static uint32_t               drwX,drwY,drwBorderWidth,drwDepth;
static uint32_t               dwidth,dheight;

static void (*draw_alpha_fnc)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride);

static void draw_alpha_yv12(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
   x0+=(vo_panscan_x>>2);
   vo_draw_alpha_yv12(w,h,src,srca,stride,
       xvimage[current_buf]->data+xvimage[current_buf]->offsets[0]+
       xvimage[current_buf]->pitches[0]*y0+x0,xvimage[current_buf]->pitches[0]);
}

static void draw_alpha_yuy2(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
   x0+=(vo_panscan_x>>2);
   vo_draw_alpha_yuy2(w,h,src,srca,stride,
       xvimage[current_buf]->data+xvimage[current_buf]->offsets[0]+
       xvimage[current_buf]->pitches[0]*y0+2*x0,xvimage[current_buf]->pitches[0]);
}

static void draw_alpha_uyvy(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
   x0+=(vo_panscan_x>>2);
   vo_draw_alpha_yuy2(w,h,src,srca,stride,
       xvimage[current_buf]->data+xvimage[current_buf]->offsets[0]+
       xvimage[current_buf]->pitches[0]*y0+2*x0+1,xvimage[current_buf]->pitches[0]);
}

static void draw_alpha_null(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
}

static int __xv_set_video_eq( const vidix_video_eq_t *info,int use_reset)
{
 XvAttribute *attributes;
 int howmany, xv_min,xv_max,xv_atomka;
 static int was_reset = 0;
/* get available attributes */
     attributes = XvQueryPortAttributes(mDisplay, xv_port, &howmany);
     /* first pass try reset */
     if(use_reset)
     {
	for (i = 0; i < howmany && attributes; i++)
        {
            if (attributes[i].flags & XvSettable && !strcmp(attributes[i].name,"XV_SET_DEFAULTS"
))
            {
		was_reset = 1;
		mp_msg(MSGT_VO,MSGL_V,"vo_xv: reset gamma correction\n");
                xv_atomka = XInternAtom(mDisplay, attributes[i].name, True);
                XvSetPortAttribute(mDisplay, xv_port, xv_atomka, attributes[i].max_value);
	    }
        }
	/* for safety purposes */
	if(!was_reset) return ENOSYS;
     }
     for (i = 0; i < howmany && attributes; i++)
     {
            if (attributes[i].flags & XvSettable)
            {
                xv_min = attributes[i].min_value;
                xv_max = attributes[i].max_value;
                xv_atomka = XInternAtom(mDisplay, attributes[i].name, True);
/* since we have SET_DEFAULTS first in our list, we can check if it's available
   then trigger it if it's ok so that the other values are at default upon query */
                if (xv_atomka != None)
                {
		    int port_value,port_min,port_max,port_mid;
		    if(strcmp(attributes[i].name,"XV_BRIGHTNESS") == 0
			      && (info->cap & VEQ_CAP_BRIGHTNESS))
				port_value = info->brightness;
		    else
		    if(strcmp(attributes[i].name,"XV_SATURATION") == 0
			      && (info->cap & VEQ_CAP_SATURATION))
				port_value = info->saturation;
		    else
		    if(strcmp(attributes[i].name,"XV_CONTRAST") == 0
			      && (info->cap & VEQ_CAP_CONTRAST))
				port_value = info->contrast;
		    else
		    if(strcmp(attributes[i].name,"XV_HUE") == 0
			      && (info->cap & VEQ_CAP_HUE))
				port_value = info->hue;
		    else
                    /* Note: since 22.01.2002 GATOS supports these attrs for radeons (NK) */
		    if(strcmp(attributes[i].name,"XV_RED_INTENSITY") == 0
			      && (info->cap & VEQ_CAP_RGB_INTENSITY))
				port_value = info->red_intensity;
		    else
		    if(strcmp(attributes[i].name,"XV_GREEN_INTENSITY") == 0
			      && (info->cap & VEQ_CAP_RGB_INTENSITY))
				port_value = info->green_intensity;
		    else
		    if(strcmp(attributes[i].name,"XV_BLUE_INTENSITY") == 0
			      && (info->cap & VEQ_CAP_RGB_INTENSITY))
				port_value = info->blue_intensity;
		    else continue;
		    /* means that user has untouched this parameter since
		       NVidia driver has default == min for XV_HUE but not mid */
		    if(!port_value && use_reset) continue;
		    port_min = xv_min;
		    port_max = xv_max;
		    port_mid = (port_min + port_max) / 2;
		    port_value = port_mid + (port_value * (port_max - port_min)) / 2000;
		    mp_msg(MSGT_VO,MSGL_V,"vo_xv: set gamma %s to %i (min %i max %i mid %i)\n",attributes[i].name,port_value,port_min,port_max,port_mid);
                    XvSetPortAttribute(mDisplay, xv_port, xv_atomka, port_value);
                }
        }
    }
    return 0;
}


static int xv_set_video_eq( const vidix_video_eq_t *info)
{
    return __xv_set_video_eq(info,0);
}

static int xv_get_video_eq( vidix_video_eq_t *info)
{
 XvAttribute *attributes;
 int howmany, xv_min,xv_max,xv_atomka;
/* get available attributes */
     memset(info,0,sizeof(vidix_video_eq_t));
     attributes = XvQueryPortAttributes(mDisplay, xv_port, &howmany);
     for (i = 0; i < howmany && attributes; i++)
     {
            if (attributes[i].flags & XvGettable)
            {
                xv_min = attributes[i].min_value;
                xv_max = attributes[i].max_value;
                xv_atomka = XInternAtom(mDisplay, attributes[i].name, True);
/* since we have SET_DEFAULTS first in our list, we can check if it's available
   then trigger it if it's ok so that the other values are at default upon query */
                if (xv_atomka != None)
                {
		    int port_value,port_min,port_max,port_mid;
                    XvGetPortAttribute(mDisplay, xv_port, xv_atomka, &port_value);
		    mp_msg(MSGT_VO,MSGL_V,"vo_xv: get: %s = %i\n",attributes[i].name,port_value);

		    port_min = xv_min;
		    port_max = xv_max;
		    port_mid = (port_min + port_max) / 2;		    
		    port_value = ((port_value - port_mid)*2000)/(port_max-port_min);
		    
		    mp_msg(MSGT_VO,MSGL_V,"vo_xv: assume: %s = %i\n",attributes[i].name,port_value);
		    
		    if(strcmp(attributes[i].name,"XV_BRIGHTNESS") == 0)
		    {
			info->cap |= VEQ_CAP_BRIGHTNESS;
			info->brightness = port_value;
		    }
		    else
		    if(strcmp(attributes[i].name,"XV_SATURATION") == 0)
		    {
			info->cap |= VEQ_CAP_SATURATION;
			info->saturation = port_value;
		    }
		    else
		    if(strcmp(attributes[i].name,"XV_CONTRAST") == 0)
		    {
			info->cap |= VEQ_CAP_CONTRAST;
			info->contrast = port_value;
		    }
		    else
		    if(strcmp(attributes[i].name,"XV_HUE") == 0)
		    {
			info->cap |= VEQ_CAP_HUE;
			info->hue = port_value;
		    }
		    else
                    /* Note: since 22.01.2002 GATOS supports these attrs for radeons (NK) */
		    if(strcmp(attributes[i].name,"XV_RED_INTENSITY") == 0)
		    {
			info->cap |= VEQ_CAP_RGB_INTENSITY;
			info->red_intensity = port_value;
		    }
		    else
		    if(strcmp(attributes[i].name,"XV_GREEN_INTENSITY") == 0)
		    {
			info->cap |= VEQ_CAP_RGB_INTENSITY;
			info->green_intensity = port_value;
		    }
		    else
		    if(strcmp(attributes[i].name,"XV_BLUE_INTENSITY") == 0)
		    {
			info->cap |= VEQ_CAP_RGB_INTENSITY;
			info->blue_intensity = port_value;
		    }
		    else continue;
                }
        }
    }
    return 0;
}

extern int vo_gamma_brightness;
extern int vo_gamma_saturation;
extern int vo_gamma_contrast;
extern int vo_gamma_hue;
extern int vo_gamma_red_intensity;
extern int vo_gamma_green_intensity;
extern int vo_gamma_blue_intensity;

static void set_gamma_correction( void )
{
  vidix_video_eq_t info;
  /* try all */
  info.cap = VEQ_CAP_BRIGHTNESS | VEQ_CAP_CONTRAST | VEQ_CAP_SATURATION |
	     VEQ_CAP_HUE | VEQ_CAP_RGB_INTENSITY;
  info.flags = 0; /* doesn't matter for xv */
  info.brightness = vo_gamma_brightness;
  info.contrast = vo_gamma_contrast;
  info.saturation = vo_gamma_saturation;
  info.hue = vo_gamma_hue;
  info.red_intensity = vo_gamma_red_intensity;
  info.green_intensity = vo_gamma_green_intensity;
  info.blue_intensity = vo_gamma_blue_intensity;
  /* reset with XV_SET_DEFAULTS only once */
  __xv_set_video_eq(&info,1);
}

/*
 * connect to server, create and map window,
 * allocate colors and (shared) memory
 */
static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format,const vo_tune_info_t *info)
{
// int screen;
 char *hello = (title == NULL) ? "Xv render" : title;
// char *name = ":0.0";
 XSizeHints hint;
 XVisualInfo vinfo;
 XEvent xev;

 XGCValues xgcv;
 XSetWindowAttributes xswa;
 unsigned long xswamask;
#ifdef HAVE_XF86VM
 int vm=0;
 unsigned int modeline_width, modeline_height;
 static uint32_t vm_width;
 static uint32_t vm_height;
#endif

 panscan_init();

 aspect_save_orig(width,height);
 aspect_save_prescale(d_width,d_height);

 image_height = height;
 image_width = width;
 image_format=format;
 
 vo_mouse_autohide=1;

 vo_dx=( vo_screenwidth - d_width ) / 2; vo_dy=( vo_screenheight - d_height ) / 2;
 vo_dwidth=d_width; vo_dheight=d_height;
     
#ifdef HAVE_XF86VM
 if( flags&0x02 ) vm = 1;
#endif
 flip_flag=flags&8;
 num_buffers=vo_doublebuffering?NUM_BUFFERS:1;

   /* check image formats */
     fo = XvListImageFormats(mDisplay, xv_port, (int*)&formats);
     xv_format=0;
     if(format==IMGFMT_BGR24) format=IMGFMT_YV12;
     for(i = 0; i < formats; i++){
       mp_msg(MSGT_VO,MSGL_V,"Xvideo image format: 0x%x (%4.4s) %s\n", fo[i].id,(char*)&fo[i].id, (fo[i].format == XvPacked) ? "packed" : "planar");
       if (fo[i].id == format) xv_format = fo[i].id;
     }
     if (!xv_format) return -1;
 
 aspect_save_screenres(vo_screenwidth,vo_screenheight);

#ifdef HAVE_NEW_GUI
  if(use_gui)
    guiGetEvent( guiSetShVideo,0 ); // let the GUI to setup/resize our window
  else
#endif
  {
   hint.x = vo_dx;
   hint.y = vo_dy;
   hint.width = d_width;
   hint.height = d_height;
   aspect(&d_width,&d_height,A_NOZOOM);
#ifdef HAVE_XF86VM
    if ( vm )
      {
	if ((d_width==0) && (d_height==0))
	  { vm_width=image_width; vm_height=image_height; }
	else
	  { vm_width=d_width; vm_height=d_height; }
	vo_vm_switch(vm_width, vm_height,&modeline_width, &modeline_height);
	hint.x=(vo_screenwidth-modeline_width)/2;
	hint.y=(vo_screenheight-modeline_height)/2;
	hint.width=modeline_width;
	hint.height=modeline_height;
	aspect_save_screenres(modeline_width,modeline_height);
      }
    else
#endif
   if ( vo_fs )
    {
#ifdef X11_FULLSCREEN
     /* this code replaces X11_FULLSCREEN hack in mplayer.c
      * aspect() is available through aspect.h for all vos.
      * besides zooming should only be done with -zoom,
      * but I leave the old -fs behaviour so users don't get
      * irritated for now (and send lots o' mails ;) ::atmos
      */

     aspect(&d_width,&d_height,A_ZOOM);
#endif

    }
//   dwidth=d_width; dheight=d_height; //XXX: what are the copy vars used for?
   vo_dwidth=d_width; vo_dheight=d_height;
   hint.flags = PPosition | PSize /* | PBaseSize */;
   hint.base_width = hint.width; hint.base_height = hint.height;
   XGetWindowAttributes(mDisplay, DefaultRootWindow(mDisplay), &attribs);
   depth=attribs.depth;
   if (depth != 15 && depth != 16 && depth != 24 && depth != 32) depth = 24;
   XMatchVisualInfo(mDisplay, mScreen, depth, TrueColor, &vinfo);

   xswa.background_pixel = 0;
   xswa.border_pixel     = 0;
   xswamask = CWBackPixel | CWBorderPixel;

    if ( WinID>=0 ){
      vo_window = WinID ? ((Window)WinID) : mRootWin;
      if ( WinID ) 
       {
        XUnmapWindow( mDisplay,vo_window );
        XChangeWindowAttributes( mDisplay,vo_window,xswamask,&xswa );
	XSelectInput( mDisplay,vo_window,StructureNotifyMask | KeyPressMask | PropertyChangeMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask | ExposureMask );
        XMapWindow( mDisplay,vo_window );
       } else { drwX=vo_dx; drwY=vo_dy; }
    } else 
       {
        vo_window = XCreateWindow(mDisplay, mRootWin,
          hint.x, hint.y, hint.width, hint.height,
          0, depth,CopyFromParent,vinfo.visual,xswamask,&xswa);

        vo_x11_classhint( mDisplay,vo_window,"xv" );
        vo_hidecursor(mDisplay,vo_window);

        XSelectInput(mDisplay, vo_window, StructureNotifyMask | KeyPressMask | PropertyChangeMask |
	((WinID==0) ? 0 : (PointerMotionMask
#ifdef HAVE_NEW_INPUT
		| ButtonPressMask | ButtonReleaseMask
#endif
	  )));
        XSetStandardProperties(mDisplay, vo_window, hello, hello, None, NULL, 0, &hint);
        XSetWMNormalHints( mDisplay,vo_window,&hint );
	XMapWindow(mDisplay, vo_window);
	if ( flags&1 ) vo_x11_fullscreen();
#ifdef HAVE_XINERAMA
	vo_x11_xinerama_move(mDisplay,vo_window);
#endif
       }
    vo_gc = XCreateGC(mDisplay, vo_window, 0L, &xgcv);
    XFlush(mDisplay);
    XSync(mDisplay, False);
#ifdef HAVE_XF86VM
    if ( vm )
     {
      /* Grab the mouse pointer in our window */
      XGrabPointer(mDisplay, vo_window, True, 0,
                   GrabModeAsync, GrabModeAsync,
                   vo_window, None, CurrentTime);
      XSetInputFocus(mDisplay, vo_window, RevertToNone, CurrentTime);
     }
#endif
  }

     mp_msg(MSGT_VO,MSGL_V, "using Xvideo port %d for hw scaling\n",xv_port );
       
       switch (xv_format){
	case IMGFMT_YV12:  
	case IMGFMT_I420:
        case IMGFMT_IYUV: draw_alpha_fnc=draw_alpha_yv12; break;
	case IMGFMT_YUY2:
	case IMGFMT_YVYU: draw_alpha_fnc=draw_alpha_yuy2; break;	
	case IMGFMT_UYVY: draw_alpha_fnc=draw_alpha_uyvy; break;
	default:   	  draw_alpha_fnc=draw_alpha_null;
       }

      for(current_buf=0;current_buf<num_buffers;++current_buf)
       allocate_xvimage(current_buf);

     current_buf=0;

     set_gamma_correction();

     aspect(&vo_dwidth,&vo_dheight,A_NOZOOM);
     if ( ( flags&1 )&&( !WinID ) )
      {
       aspect(&vo_dwidth,&vo_dheight,A_ZOOM);
       drwX=( vo_screenwidth - (vo_dwidth > vo_screenwidth?vo_screenwidth:vo_dwidth) ) / 2;
       drwY=( vo_screenheight - (vo_dheight > vo_screenheight?vo_screenheight:vo_dheight) ) / 2;
       vo_dwidth=(vo_dwidth > vo_screenwidth?vo_screenwidth:vo_dwidth);
       vo_dheight=(vo_dheight > vo_screenheight?vo_screenheight:vo_dheight);
       mp_msg(MSGT_VO,MSGL_V, "[xv-fs] dx: %d dy: %d dw: %d dh: %d\n",drwX,drwY,vo_dwidth,vo_dheight );
      }

     panscan_calc();
     
     mp_msg(MSGT_VO,MSGL_V, "[xv] dx: %d dy: %d dw: %d dh: %d\n",drwX,drwY,vo_dwidth,vo_dheight );

     saver_off(mDisplay);  // turning off screen saver
     return 0;
}

static const vo_info_t * get_info(void)
{ return &vo_info; }

static void allocate_xvimage(int foo)
{
 /*
  * allocate XvImages.  FIXME: no error checking, without
  * mit-shm this will bomb... trzing to fix ::atmos
  */
#ifdef HAVE_SHM
 if ( mLocalDisplay && XShmQueryExtension( mDisplay ) ) Shmem_Flag = 1;
 else
  {
   Shmem_Flag = 0;
   mp_msg(MSGT_VO,MSGL_INFO, "Shared memory not supported\nReverting to normal Xv\n" );
  }
 if ( Shmem_Flag ) 
  {
   xvimage[foo] = XvShmCreateImage(mDisplay, xv_port, xv_format, 0, image_width, image_height, &Shminfo[foo]);

   Shminfo[foo].shmid    = shmget(IPC_PRIVATE, xvimage[foo]->data_size, IPC_CREAT | 0777);
   Shminfo[foo].shmaddr  = (char *) shmat(Shminfo[foo].shmid, 0, 0);
   Shminfo[foo].readOnly = False;

   xvimage[foo]->data = Shminfo[foo].shmaddr;
   XShmAttach(mDisplay, &Shminfo[foo]);
   XSync(mDisplay, False);
   shmctl(Shminfo[foo].shmid, IPC_RMID, 0);
  }
 else
#endif
  {
    xvimage[foo] = XvCreateImage(mDisplay, xv_port, xv_format, 0, image_width, image_height);
    xvimage[foo]->data = malloc(xvimage[foo]->data_size);
    XSync(mDisplay,False);
  }
 memset(xvimage[foo]->data,128,xvimage[foo]->data_size);
 return;
}

static void deallocate_xvimage(int foo)
{
#ifdef HAVE_SHM
 if ( Shmem_Flag )
  {
   XShmDetach( mDisplay,&Shminfo[foo] );
   shmdt( Shminfo[foo].shmaddr );
  }
 else
#endif
  {
   free(xvimage[foo]->data);
  }
 XFree(xvimage[foo]);
 
 XFlush( mDisplay );
 XSync(mDisplay, False);
 return;
}

static void check_events(void)
{
 int e=vo_x11_check_events(mDisplay);
 if(e&VO_EVENT_RESIZE)
  {
   XGetGeometry( mDisplay,vo_window,&mRoot,&drwX,&drwY,&vo_dwidth,&vo_dheight,&drwBorderWidth,&drwDepth );
   drwX = drwY = 0;
   mp_msg(MSGT_VO,MSGL_V, "[xv] dx: %d dy: %d dw: %d dh: %d\n",drwX,drwY,vo_dwidth,vo_dheight );

   aspect(&dwidth,&dheight,A_NOZOOM);
   if ( vo_fs )
    {
     aspect(&dwidth,&dheight,A_ZOOM);
     drwX=( vo_screenwidth - (dwidth > vo_screenwidth?vo_screenwidth:dwidth) ) / 2;
     drwY=( vo_screenheight - (dheight > vo_screenheight?vo_screenheight:dheight) ) / 2;
     vo_dwidth=(dwidth > vo_screenwidth?vo_screenwidth:dwidth);
     vo_dheight=(dheight > vo_screenheight?vo_screenheight:dheight);
     mp_msg(MSGT_VO,MSGL_V, "[xv-fs] dx: %d dy: %d dw: %d dh: %d\n",drwX,drwY,vo_dwidth,vo_dheight );
    }
  }
 if ( e & VO_EVENT_EXPOSE )
  {
#ifdef HAVE_SHM
   if ( Shmem_Flag )
    {
     XvShmPutImage(mDisplay, xv_port, vo_window, vo_gc, xvimage[current_buf], 0, 0,  image_width, image_height, drwX, drwY, 1, 1, False);
     XvShmPutImage(mDisplay, xv_port, vo_window, vo_gc, xvimage[current_buf], 0, 0,  image_width, image_height, drwX,drwY,vo_dwidth,(vo_fs?vo_dheight - 1:vo_dheight), False);
    }
   else
#endif
    {
     XvPutImage(mDisplay, xv_port, vo_window, vo_gc, xvimage[current_buf], 0, 0,  image_width, image_height, drwX, drwY, 1, 1);
     XvPutImage(mDisplay, xv_port, vo_window, vo_gc, xvimage[current_buf], 0, 0,  image_width, image_height, drwX,drwY,vo_dwidth,(vo_fs?vo_dheight - 1:vo_dheight));
    }
  }
}

static void draw_osd(void)
{ vo_draw_text(image_width-(vo_panscan_x>>1),image_height,draw_alpha_fnc);}

static void flip_page(void)
{

#ifdef HAVE_SHM
 if ( Shmem_Flag )
  {
   XvShmPutImage(mDisplay, xv_port, vo_window, vo_gc, xvimage[current_buf],
         0, 0,  image_width, image_height,
         drwX-(vo_panscan_x>>1),drwY-(vo_panscan_y>>1),vo_dwidth+vo_panscan_x,(vo_fs?vo_dheight - 1:vo_dheight)+vo_panscan_y,
         False);
  }
 else
#endif
  {
   XvPutImage(mDisplay, xv_port, vo_window, vo_gc, xvimage[current_buf],
         0, 0,  image_width, image_height,
         drwX-(vo_panscan_x>>1),drwY-(vo_panscan_y>>1),vo_dwidth+vo_panscan_x,(vo_fs?vo_dheight - 1:vo_dheight)+vo_panscan_y);
  }
 if (num_buffers>1){
    current_buf=(current_buf+1)%num_buffers;
    XFlush(mDisplay);
 } else
    XSync(mDisplay, False);   
 return;
}



static uint32_t draw_slice(uint8_t *image[], int stride[], int w,int h,int x,int y)
{
 uint8_t *src;
 uint8_t *dst;
 int i;
 int srcstride;

 dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[0] + 
       xvimage[current_buf]->pitches[0]*y + x;
 src = image[0];
 if(w==stride[0] && w==xvimage[current_buf]->pitches[0]) memcpy(dst,src,w*h);
   else
    for(i=0;i<h;i++)
     {
      memcpy(dst,src,w);
      src+=stride[0];
      dst+=xvimage[current_buf]->pitches[0];
     }

 x/=2;y/=2;w/=2;h/=2;

 dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[1] + 
       xvimage[current_buf]->pitches[1]*y + x;
 src=image[2];srcstride=stride[2];
 if(image_format!=IMGFMT_YV12){ src=image[1];srcstride=stride[1]; }
 if(w==srcstride && w==xvimage[current_buf]->pitches[1]) memcpy(dst,src,w*h);
  else
   for(i=0;i<h;i++)
    {
     memcpy(dst,src,w);
     src+=srcstride;
     dst+=xvimage[current_buf]->pitches[1];
   }

 dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[2] + 
       xvimage[current_buf]->pitches[2]*y + x;
 src=image[2];srcstride=stride[2];
 if(image_format==IMGFMT_YV12){ src=image[1];srcstride=stride[1]; }
 if(w==srcstride && w==xvimage[current_buf]->pitches[2]) memcpy(dst,src,w*h);
  else
   for(i=0;i<h;i++)
    {
     memcpy(dst,src,w);
     src+=srcstride;
     dst+=xvimage[current_buf]->pitches[2];
   }

 return 0;
}

static uint32_t draw_frame(uint8_t *src[])
{

 switch (image_format) {
 case IMGFMT_YUY2:
 case IMGFMT_UYVY:
 case IMGFMT_YVYU:

//    printf("off=0x%X  pitch=%d  width=%d  \n",xvimage[current_buf]->offsets[0],xvimage[current_buf]->pitches[0],image_width);

    // YUY2 packed
    if(image_width*2==xvimage[current_buf]->pitches[0]){
	memcpy(xvimage[current_buf]->data+xvimage[current_buf]->offsets[0],
	    src[0], image_width*image_height*2);
    } else {
	unsigned char* s=src[0];
	unsigned char* d=xvimage[current_buf]->data+xvimage[current_buf]->offsets[0];
	int i;
	for(i=0;i<image_height;i++) {
	    memcpy(d,s,image_width*2);
	    s+=image_width*2;
	    d+=xvimage[current_buf]->pitches[0];
	}
    }
    break;

 case IMGFMT_BGR24:

    if(flip_flag)	// tricky, using negative src stride:
     rgb24toyv12(src[0]+3*image_width*(image_height-1),
                 xvimage[current_buf]->data+xvimage[current_buf]->offsets[0],
                 xvimage[current_buf]->data+xvimage[current_buf]->offsets[2],
                 xvimage[current_buf]->data+xvimage[current_buf]->offsets[1],
		 image_width,image_height,
		 xvimage[current_buf]->pitches[0],
		 xvimage[current_buf]->pitches[1],
		 -3*image_width);
    else
     rgb24toyv12(src[0],
                 xvimage[current_buf]->data+xvimage[current_buf]->offsets[0],
                 xvimage[current_buf]->data+xvimage[current_buf]->offsets[2],
                 xvimage[current_buf]->data+xvimage[current_buf]->offsets[1],
		 image_width,image_height,
		 xvimage[current_buf]->pitches[0],
		 xvimage[current_buf]->pitches[1],
		 3*image_width);
     break;

 }

  return 0;
}

static uint32_t get_image(mp_image_t *mpi){
    if(mpi->type==MP_IMGTYPE_STATIC && num_buffers>1) return VO_FALSE; // it is not static
    if(mpi->type==MP_IMGTYPE_IPB && num_buffers<3 && mpi->flags&MP_IMGFLAG_READABLE) return VO_FALSE; // not enough
    if(mpi->imgfmt!=image_format || mpi->imgfmt==IMGFMT_BGR24) return VO_FALSE; // needs conversion :(
//    if(mpi->flags&MP_IMGFLAG_READABLE) return VO_FALSE; // slow video ram
    if( (mpi->flags&(MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_ACCEPT_WIDTH)) ||
	(mpi->width*(mpi->bpp/8)==xvimage[current_buf]->pitches[0]) ){
	mpi->planes[0]=xvimage[current_buf]->data+xvimage[current_buf]->offsets[0];
	mpi->stride[0]=xvimage[current_buf]->pitches[0];
	mpi->width=mpi->stride[0]/(mpi->bpp/8);
	if(mpi->flags&MP_IMGFLAG_PLANAR){
	    if(mpi->flags&MP_IMGFLAG_SWAPPED){
		// I420
		mpi->planes[1]=xvimage[current_buf]->data+xvimage[current_buf]->offsets[1];
		mpi->planes[2]=xvimage[current_buf]->data+xvimage[current_buf]->offsets[2];
		mpi->stride[1]=xvimage[current_buf]->pitches[1];
		mpi->stride[2]=xvimage[current_buf]->pitches[2];
	    } else {
	       // YV12
		mpi->planes[1]=xvimage[current_buf]->data+xvimage[current_buf]->offsets[2];
		mpi->planes[2]=xvimage[current_buf]->data+xvimage[current_buf]->offsets[1];
		mpi->stride[1]=xvimage[current_buf]->pitches[2];
		mpi->stride[2]=xvimage[current_buf]->pitches[1];
	    }
	}
       mpi->flags|=MP_IMGFLAG_DIRECT;
//	printf("mga: get_image() SUCCESS -> Direct Rendering ENABLED\n");
       return VO_TRUE;
    }
    return VO_FALSE;
}

static uint32_t query_format(uint32_t format)
{
    int flag=3|VFCAP_HWSCALE_UP|VFCAP_HWSCALE_DOWN|VFCAP_OSD; // FIXME! check for DOWN
   /* check image formats */
     if(format==IMGFMT_BGR24){ format=IMGFMT_YV12;flag&=~2;flag|=VFCAP_FLIP;} // conversion!
     for(i = 0; i < formats; i++){
       if (fo[i].id == format) return flag; //xv_format = fo[i].id;
     }
     return 0;
}

static void uninit(void) 
{
 int i;
 if ( !vo_config_count ) return;
 saver_on(mDisplay); // screen saver back on
 for( i=0;i<num_buffers;i++ ) deallocate_xvimage( i );
#ifdef HAVE_XF86VM
 vo_vm_close(mDisplay);
#endif
 vo_x11_uninit();
}

static uint32_t preinit(const char *arg)
{
    XvPortID xv_p;
    int busy_ports=0;
    
    if(arg) 
    {
	mp_msg(MSGT_VO,MSGL_ERR,"vo_xv: Unknown subdevice: %s\n",arg);
	return ENOSYS;
    }
    if (!vo_init()) return -1;

    xv_port = 0;
   /* check for Xvideo extension */
    if (Success != XvQueryExtension(mDisplay,&ver,&rel,&req,&ev,&err)){
	mp_msg(MSGT_VO,MSGL_ERR,"Sorry, Xv not supported by this X11 version/driver\n");
	mp_msg(MSGT_VO,MSGL_ERR,"******** Try with  -vo x11  or  -vo sdl  *********\n");
	return -1;
    }
    
   /* check for Xvideo support */
    if (Success != XvQueryAdaptors(mDisplay,DefaultRootWindow(mDisplay), &adaptors,&ai)){
	mp_msg(MSGT_VO,MSGL_ERR,"Xv: XvQueryAdaptors failed");
	return -1;
    }

   /* check adaptors */
    for (i = 0; i < adaptors && xv_port == 0; i++){
      if ((ai[i].type & XvInputMask) && (ai[i].type & XvImageMask)) {
	 for (xv_p = ai[i].base_id; xv_p < ai[i].base_id+ai[i].num_ports; ++xv_p)
	     if (!XvGrabPort(mDisplay, xv_p, CurrentTime)) {
		 xv_port = xv_p;
		 break;
	     } else {
		 mp_msg(MSGT_VO,MSGL_WARN,"Xv: could not grab port %i\n", (int)xv_p);
		 ++busy_ports;
	     }
      }
    }
    if(!xv_port){
      if(busy_ports)
	mp_msg(MSGT_VO,MSGL_ERR,"Could not find free Xvideo port - maybe another process is already using it.\n"
	    "Close all video applications, and try again. If that does not help,\n"
	    "see 'mplayer -vo help' for other (non-xv) video out drivers.\n");
      else
	mp_msg(MSGT_VO,MSGL_ERR,"It seems there is no Xvideo support for your video card available.\n"
	    "Run 'xvinfo' to verify its Xv support, and read Xv section of DOCS/video.html !\n"
	    "See 'mplayer -vo help' for other (non-xv) video out drivers. Try -vo x11\n");
	return -1;
    }

    fo = XvListImageFormats(mDisplay, xv_port, (int*)&formats);

    return 0;
}

static void query_vaa(vo_vaa_t *vaa)
{
  memset(vaa,0,sizeof(vo_vaa_t));
  vaa->get_video_eq = xv_get_video_eq;
  vaa->set_video_eq = xv_set_video_eq;
}

static uint32_t control(uint32_t request, void *data, ...)
{
  switch (request) {
  case VOCTRL_QUERY_VAA:
    query_vaa((vo_vaa_t*)data);
    return VO_TRUE;
  case VOCTRL_QUERY_FORMAT:
    return query_format(*((uint32_t*)data));
  case VOCTRL_GET_IMAGE:
    return get_image(data);
  case VOCTRL_GUISUPPORT:
    return VO_TRUE;
  case VOCTRL_GET_PANSCAN:
    if ( !vo_config_count || !vo_fs ) return VO_FALSE;
    return VO_TRUE;
  case VOCTRL_FULLSCREEN:
    vo_x11_fullscreen();
  /* indended, fallthrough to update panscan on fullscreen/windowed switch */
  case VOCTRL_SET_PANSCAN:
   if ( ( vo_fs && ( vo_panscan != vo_panscan_amount ) ) || ( !vo_fs && vo_panscan_amount ) )
     {
      int old_y = vo_panscan_y;
      panscan_calc();
      
      if(old_y != vo_panscan_y)
       {
        XClearWindow(mDisplay, vo_window);
        XFlush(mDisplay);
       }
     }
    return VO_TRUE;
  }
  return VO_NOTIMPL;
}