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
|
<HTML>
<BODY BGCOLOR=white>
<FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>
<P><B><A NAME=2.2.1>2.2.1. Video output devices</A></B></P>
<TABLE BORDER=0>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>General:</B></P></TD><TR>
<TD> </TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>x11</TD><TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>X11 with optional SHM extension</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>xv</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>X11 using overlays with the Xvideo extension (hardware YUV & scaling)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>gl</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OpenGL renderer, so far works only with:
<UL><LI>all cards with Utah-GLX
<LI>Matrox cards with X/DRI >=4.0.3
<LI>Radeon with X/DRI CVS</UL></TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>dga</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>X11 DGA extension</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>fbdev</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Output to general framebuffers</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>svga</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Output to SVGAlib</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>sdl</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>
<CODE>1.1.7:</CODE> supports software scaling<BR>
<CODE>1.1.8:</CODE> supports Xvideo (hardware scaling/fullscreen)<BR>
<CODE>1.2.0:</CODE> supports AAlib (-vo aa is very recommended, see below!)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>ggi</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>similar to SDL</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>aa</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>textmode rendering with AAlib</TD><TR>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Card specific:</B></P></TD><TR>
<TD> </TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>mga</TD><TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Matrox G200/G400 hardware YUV overlay via the mga_vid device</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>xmga</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Matrox G200/G400 overlay (mga_vid) in X11 window<BR>
(<I>Xv emulation on X 3.3.x!</I>)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>syncfb</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Matrox G400 YUV support on framebuffer (obsoleted, use mga/xmga)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>3dfx</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Voodoo3/Banshee hardware YUV (/dev/3dfx) support (not yet tested, maybe
broken)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>tdfxfb</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Voodoo3/Banshee hardware YUV support on tdfx framebuffer (works!)</TD><TR>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Special:</B></P></TD><TR>
<TD> </TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>png</TD><TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>PNG files output (use -z switch to set compression)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>pgm</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>PGM files output (for testing purposes or ffmpeg encoding)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>md5</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>MD5sum output (for MPEG conformance tests)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>odivx</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>OpenDivX AVI File writer (use -br to set encoding bitrate) (<B>WITHOUT SOUND</B>!)</TD><TR>
<TD></TD><TD VALIGN=top><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>null</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>Null output (for speed tests/benchmarking)</TD><TR>
</TABLE>
<P>NOTE: <I>check the following subsections for details and requirements!</I></P>
<P><B><A NAME=2.2.1.1>2.2.1.1. MTRR</A></B></P>
<P>It is VERY recommended to check if the MTRR registers are set up properly,
because they can give a big performance boost.</P>
<P>Do a '<CODE>cat /proc/mtrr</CODE>' :</P>
<P><CODE>
--($:~)-- cat /proc/mtrr<BR>
reg00: base=0xe4000000 (3648MB), size= 16MB: write-combining, count=9<BR>
reg01: base=0xd8000000 (3456MB), size= 128MB: write-combining, count=1<BR>
</CODE></P>
<P>It's right, shows my Matrox G400 with 16Mb memory. I did this from
XFree 4.x.x , which sets up MTRR registers automatically.</P>
If nothing worked, you have to do it manually. First, you have to find the base
address.
You have 3 ways to find it:</P>
<P><UL>
<LI>from X11 startup messages, for example:
<P><CODE>(--) SVGA: PCI: Matrox MGA G400 AGP rev 4, Memory @ 0xd8000000, 0xd4000000<BR>
(--) SVGA: Linear framebuffer at 0xD8000000</CODE></P>
<LI>from /proc/pci (use lspci -v command):
<P><TABLE>
<TD VALIGN=top><CODE>01:00.0</CODE></TD><TD><CODE>VGA compatible controller: Matrox Graphics, Inc.: Unknown device 0525</CODE></TD><TR>
<TD></TD><TD><CODE>Memory at d8000000 (32-bit, prefetchable)</CODE></TD><TR>
</TABLE></P></CODE>
<LI>from mga_vid kernel driver messages (use dmesg):
<P><CODE>mga_mem_base = d8000000</CODE></P>
</UL></P>
<P>Then let's find the memory size. This is very easy, just convert video ram
size to hexadecimal, or use this table:</P>
<TABLE BORDER=0>
<TD> </TD><TD>1 MB</TD><TD WIDTH=10%></TD><TD>0x100000</TD><TR>
<TD></TD><TD>2 MB</TD><TD></TD><TD>0x200000</TD><TR>
<TD></TD><TD>4 MB</TD><TD></TD><TD>0x400000</TD><TR>
<TD></TD><TD>8 MB</TD><TD></TD><TD>0x800000</TD><TR>
<TD></TD><TD>16 MB</TD><TD></TD><TD>0x1000000</TD><TR>
<TD></TD><TD>32 MB</TD><TD></TD><TD>0x2000000</TD><TR>
</TABLE>
<P>You know base address and memory size, let's setup mtrr registers!
For example, for the Matrox card above (base=0xd8000000) with 32MB
ram (size=0x2000000) just execute:</P>
<P><CODE> echo "base=0xd8000000 size=0x2000000 type=write-combining" >| /proc/mtrr</CODE></P>
<P>Not all CPUs support MTRRs. For example older K6-2's [around 266Mhz,
stepping 0] doesn't support MTRR, but stepping 12's do ('<CODE>cat /proc/cpuinfo</CODE>'
to check it</CODE>').</P>
<P><B><A NAME=2.2.1.2>2.2.1.2. Xv</A></B></P>
<P>Under XFree86 4.0.2 or newer, you can use your card's hardware YUV routines
using the XVideo extension. This is what the option '-vo xv' uses.
In order to make this work, be sure to check the following:</P>
<P><UL>
<LI>You have to use XFree86 4.0.2 or newer (former versions don't have XVideo)
<LI>Your card actually supports harware acceleration (modern cards do)
<LI>X loads the XVideo extension, it's something like this:
<P><CODE> (II) Loading extension XVideo</CODE></P>
<P>in /var/log/XFree86.0.log</P>
<P>NOTE: this loads only the XFree86's extension. In a good install, this is
always loaded, and doesn't mean that the _card's_ XVideo support is loaded!</P>
<LI>Your card has Xv support under Linux. To check, try 'xvinfo', it is the
part of the XFree86 distribution. It should display a long text, similar
to this:
<PRE>
X-Video Extension version 2.2
screen #0
Adaptor #0: "Savage Streams Engine"
number of ports: 1
port base: 43
operations supported: PutImage
supported visuals:
depth 16, visualID 0x22
depth 16, visualID 0x23
number of attributes: 5
(...)
Number of image formats: 7
id: 0x32595559 (YUY2)
guid: 59555932-0000-0010-8000-00aa00389b71
bits per pixel: 16
number of planes: 1
type: YUV (packed)
id: 0x32315659 (YV12)
guid: 59563132-0000-0010-8000-00aa00389b71
bits per pixel: 12
number of planes: 3
type: YUV (planar)
(...etc...)
</PRE>
<P>It must support YUY2 packed, and YV12 planar pixel formats to be
usable with <B>MPlayer</B>.</P>
<LI>And finally, check if <B>MPlayer</B> was compiled with 'xv' support.
./configure prints this.
</UL></P>
<P><B><A NAME=2.2.1.2.1>2.2.1.2.1. 3dfx cards</A></B></P>
<P>Older 3dfx drivers were known to have problems with XVideo acceleration,
it didn't support either YUY2 or YV12, and so. Verify that you have
XFree86 version 4.1.0 or greater, it works ok. Alternatively, you can use
<A HREF="http://dri.sourceforge.net">DRI</A> cvs.
If you experience strange effects using -vo xv, try SDL (it has XVideo too)
and see if it helps. Check the <A HREF="#2.2.1.4">SDL section</A> for details.</P>
<P><B>OR</B>, try the NEW -vo tdfxfb driver! See the <A HREF=#2.2.1.9>2.2.1.9</A>
section!</P>
<P><B><A NAME=2.2.1.2.2>2.2.1.2.2. S3 cards</A></B></P>
<P>S3 Savage3D's should work fine, but for Savage4, use XFree86 version 4.0.3
or greater (in case of image problems, try 16bpp). As for S3 Virge.. sell it.</P>
<P><B><A NAME=2.2.1.2.3>2.2.1.2.3. nVidia cards</A></B></P>
<P>nVidia isn't a very good choice under Linux.. You'll have to use the
binary nVidia driver, available at nVidia's website. The standard X
driver doesn't support XVideo for these cards, due to nVidia's closed
sources/specifications.</P>
<P><UL><LI>Riva128 cards don't have XVideo support even with the nvidia driver :(
Complain to NVidia.</UL></P>
<P><B><A NAME=2.2.1.2.4>2.2.1.2.4. ATI cards</A></B></P>
<P>
<LI>The GATOS driver (which you should use) has VSYNC enabled by default. It means that decoding speed
(!) is synced to the monitor's refresh rate. If playing seems to be slow, try
disabling VSYNC somehow, or set refresh rate to n*(fps of the movie) Hz.</LI>
<LI>Radeon VE - currently only XFree86 CVS has driver for this card, version
4.1.0 doesn't. No TV-out support.</LI>
</P>
<P><B><A NAME=2.2.1.2.5>2.2.1.2.5. NeoMagic cards</A></B></P>
<P>
These cards can be found in many laptops. Under Linux, their peak is only DGA.
Unfortunately, the DGA driver in X 4.1.0 doesn't work, you'll have to wait for
4.2.0, or download a modified driver for 4.0.3 or 4.1.0 from here :
<A HREF="http://www.mplayerhq.hu/MPlayer/incoming/NeoMagic-driver">http://www.mplayerhq.hu/MPlayer/incoming/NeoMagic-driver</A>
(there is also the patch to the driver's source).<BR>
Drivers provided by <A HREF="mailto:tomee@cpi.pl">Tomek Jarzynka</A>.
</P>
<P><B><A NAME=2.2.1.3>2.2.1.3. DGA</A></B></P>
<P><B><A NAME=2.2.1.3.1>2.2.1.3.1. Summary</A></B></P>
<P>This document tries to explain in some words what DGA is in general and
what the DGA video output driver for mplayer can do (and what it can't).</P>
<P><B><A NAME=2.2.1.3.2>2.2.1.3.2. What is DGA</A></B></P>
<P>DGA is short for Direct Graphics Access and is a means for a program to
bypass the X-Server and directly modifying the framebuffer memory.
Technically spoken this happens by mapping the framebuffer memory into
the memory range of your process. This is allowed by the kernel only
if you have superuser privileges. You can get these either by logging in
as root or by setting the suid bit on the mplayer excecutable (NOT
recommended!).</P>
<P>There are two versions of DGA: DGA1 is used by XFree 3.x.x and DGA2 was
introduced with XFree 4.0.1.</P>
<P>DGA1 provides only direct framebuffer access as described above. For
switching the resolution of the video signal you have to rely on the
XVidMode extension.</P>
<P>DGA2 incorporates the features of XVidMode extension and also allows
switching the depth of the display. So you may, although basically
running a 32 bit depth XServer, switch to a depth of 15 bits and vice
versa. </P>
<P>However DGA has some drawbacks. It seems it is somewhat dependent on the
graphics chip you use and on the implementation of the XServer's video
driver that controls this chip. So it does not work on every system ...</P>
<P><B><A NAME=2.2.1.3.3>2.2.1.3.3. Installing DGA support for MPlayer</A></B></P>
<P>First make sure X loads the DGA extension, see in /var/log/XFree86.0.log:</P>
<P> <CODE>(II) Loading extension XFree86-DGA</CODE></P>
<P>See, XFree86 4.0.x or greater is VERY RECOMMENDED!
<B>MPlayer</B>'s DGA driver is autodetected on ./configure, or you can force it
with --enable-dga.</P>
<P>If the driver couldn't switch to a smaller resolution, experiment with
switches -vm (only with X 3.3.x), -fs, -bpp, -zoom to find a video mode that
the movie fits in. There is no converter right now.. :(</P>
<P>Become ROOT. DGA needs root access to be able to write directly video memory.
If you want to run it as user, then install <B>MPlayer</B> SUID root:</P>
<P><CODE>
<CODE>chown root /usr/local/bin/mplayer<BR>
chmod 750 /usr/local/bin/mplayer<BR>
chmod +s /usr/local/bin/mplayer</CODE></P>
<P>Now it works as a simple user, too.</P>
<P><B>!!!! BUT STAY TUNED !!!!</B><BR>
This is a <B>BIG</B> security risk! Never do this on a server or on a computer
can be accessed by more people than only you because they can gain root
privilegies through suid root mplayer.<BR>
<B>!!!! SO YOU HAVE BEEN WARNED ... !!!!</B></P>
<P>Now use '-vo dga' option, and there you go! (hope so:)
You should also try if the '-vo sdl:dga' option works for you! It's much
faster!!!</P>
<P><B><A NAME=2.2.1.3.4>2.2.1.3.4. Resolution switching</A></B></P>
<P>The DGA driver allows for switching the resolution of the output signal.
This avoids the need for doing (slow) software scaling and at the same
time provides a fullscreen image. Ideally it would switch to the exact
resolution (except for honouring aspect ratio) of the video data, but the
XServer only allows switching to resolutions predefined in
<CODE>/etc/X11/XF86Config</CODE> (<CODE>/etc/X11/XF86Config-4</CODE> for XFree 4.0.X respectively).
Those are defined by so-called modelines and depend on the capabilites
of your video hardware. The XServer scans this config file on startup and
disables the modelines not suitable for your hardware. You can find
out which modes survive with the X11 log file. It can be found at:
<CODE>/var/log/XFree86.0.log</CODE>.</P>
<P>See appendix A for some sample modeline definitions.</P>
<P><B><A NAME=2.2.1.3.5>2.2.1.3.5. DGA & MPlayer</A></B></P>
<P>DGA is used in two places with <B>MPlayer</B>: The SDL driver can be made to make
use of it (-vo sdl:dga) and within the DGA driver (-vo dga).
The above said is true for both; in the following sections I'll explain
how the DGA driver for <B>MPlayer</B> works.</P>
<P><B><A NAME=2.2.1.3.6>2.2.1.3.6. Features of the DGA driver</A></B></P>
<P>The DGA driver is invoked by specifying -vo dga at the command line.
The default behaviour is to switch to a resolution matching the original
resolution of the video as close as possible. It deliberately ignores the
-vm and -fs switches (enabling of video mode switching and fullscreen) -
it always tries to cover as much area of your screen as possible by switching
the video mode, thus refraining to use a single additional cycle of your CPU
to scale the image.
If you don't like the mode it chooses you may force it to choose the mode
matching closest the resolution you specify by -x and -y.
By providing the -v option, the DGA driver will print, among a lot of other
things, a list of all resolutions supported by your current XF86-Config
file.
Having DGA2 you may also force it to use a certain depth by using the -bpp
option. Valid depths are 15, 16, 24 and 32. It depends on your hardware
whether these depths are natively supported or if a (possibly slow)
conversion has to be done.</P>
<P>If you should be lucky enough to have enough offscreen memory left to
put a whole image there, the DGA driver will use doublebuffering, which
results in much smoother movie replaying. It will tell you whether double-
buffering is enabled or not.</P>
<P>Doublebuffering means that the next frame of your video is being drawn in
some offscreen memory while the current frame is being displayed. When the
next frame is ready, the graphics chip is just told the location in memory
of the new frame and simply fetches the data to be displayed from there.
In the meantime the other buffer in memory will be filled again with new
video data.</P>
Doublebuffering may be switched on by using the option -double and may be
disabled with -nodouble. Current default option is to disable
doublebuffering. When using the DGA driver, onscreen display (OSD) only
works with doublebuffering enabled. However, enabling doublebuffering may
result in a big speed penalty (on my K6-II+ 525 it used an additional 20% of
CPU time!) depending on the implementation of DGA for your hardware.</P>
<P><B><A NAME=2.2.1.3.7>2.2.1.3.7. Speed issues</A></B></P>
<P>Generally spoken, DGA framebuffer access should be at least as fast as using
the X11 driver with the additional benefit of getting a fullscreen image.
The percentage speed values printed by mplayer have to be interpreted with
some care, as for example, with the X11 driver they do not include the time
used by the X-Server needed for the actual drawing. Hook a terminal to a
serial line of your box and start top to see what is really going on in your
box ...</P>
<P>Generally spoken, the speedup done by using DGA against 'normal' use of X11
highly depends on your graphics card and how well the X-Server module for it
is optimized.</P>
<P>If you have a slow system, better use 15 or 16bit depth since they require
only half the memory bandwidth of a 32 bit display.</P>
<P>Using a depth of 24bit is even a good idea if your card natively just supports
32 bit depth since it transfers 25% less data compared to the 32/32 mode.</P>
<P>I've seen some avi files already be replayed on a Pentium MMX 266. AMD K6-2
CPUs might work at 400 MHZ and above.</P>
<P><B><A NAME=2.2.1.3.8>2.2.1.3.8. Known bugs</A></B></P>
<P>Well, according to some developpers of XFree, DGA is quite a beast. They
tell you better not to use it. Its implementation is not always flawless
with every chipset driver for XFree out there.</P>
<P><UL>
<LI>with XFree 4.0.3 and nv.o there is a bug resulting in strange colors
<LI>ATI driver requires to switch mode back more than once after finishing
using of DGA
<LI>some drivers simply fail to switch back to normal resolution (use
Ctrl-Alt-Keypad +, - to switch back manually)
<LI>some drivers simply display strange colors
<LI>some drivers lie about the amount of memory they map into the process's
address space, thus vo_dga won't use doublebuffering (SIS?)
<LI>some drivers seem to fail to report even a single valid mode. In this
case the DGA driver will crash telling you about a nonsense mode of
100000x100000 or the like ...
<LI>OSD only works with doublebuffering enabled
</UL></P>
<P><B><A NAME=2.2.1.3.9>2.2.1.3.9. Future work</A></B></P>
<P><UL><LI>use of the new X11 render interface for OSD
<LI>where is my TODO list ???? :-(((</UL></P>
<P><B><A NAME=2.2.1.3.A>2.2.1.3.A. Some modelines</A></B></P>
<PRE>
Section "Modes"
Identifier "Modes[0]"
Modeline "800x600" 40 800 840 968 1056 600 601 605 628
Modeline "712x600" 35.0 712 740 850 900 400 410 412 425
Modeline "640x480" 25.175 640 664 760 800 480 491 493 525
Modeline "400x300" 20 400 416 480 528 300 301 303 314 Doublescan
Modeline "352x288" 25.10 352 368 416 432 288 296 290 310
Modeline "352x240" 15.750 352 368 416 432 240 244 246 262 Doublescan
Modeline "320x240" 12.588 320 336 384 400 240 245 246 262 Doublescan
EndSection
</PRE>
<P>These entries work fine with my Riva128 chip, using nv.o XServer driver
module.</P>
<P><B><A NAME=2.2.1.3.B>2.2.1.3.B. Bug Reports</A></B></P>
<P>If you experience troubles with the DGA driver please feel free to file
a bug report to me (e-mail address below). Please start mplayer with the
-v option and include all lines in the bug report that start with vo_dga:</P>
<P>Please do also include the version of X11 you are using, the graphics card
and your CPU type. The X11 driver module (defined in XF86-Config) might
also help. Thanks!</P>
<P><I>Acki (acki@acki-netz.de, www.acki-netz.de)</I></P>
<P><B><A NAME=2.2.1.4>2.2.1.4. SDL</A></B></P>
<P>Here are some notes about SDL out in <B>MPlayer</B>.</P>
<P><TABLE BORDER=0>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>There are several commandline switches for SDL:</B></P></TD><TR>
<TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-vo sdl:name</TD><TD> </TD><TD>
<FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>specifies sdl video driver to use (ie. aalib, dga, x11)</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-ao sdl:name</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>specifies sdl audio driver to use (ie. dsp,
esd, arts)</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-noxv</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>disables Xvideo hardware acceleration</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-forcexv</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>tries to force Xvideo acceleration</TD><TR>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>SDL Keys:</B></P></TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>F</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>toggles fullscreen/windowed mode</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>C</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>cycles available fullscreen modes</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>W/S</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>mappings for * and / (mixer control)</TD><TR>
</TABLE></P>
<P><B>KNOWN BUGS:</B></P>
<P><UL><LI>Keys pressed under sdl:aalib console driver repeat forever. (use -vo aa !)
It's bug in SDL, I can't change it (tested with SDL 1.2.1).
</UL></P>
<P><B><A NAME=2.2.1.5>2.2.1.5. SVGAlib</A></B></P>
<P>If you don't have X, you can use the SVGAlib target! Be sure not to use the
-fs switch, since it toggles the usage of the software scaler, and it's
SLOOOW now, unless you have a real fast CPU (and/or MTRR?). :(</P>
<P>Of course you'll have to install svgalib and its development package in
order for <B>MPlayer</B> build its SVGAlib driver (autodetected, but can be
forced), and don't forget to edit /etc/vga/libvga.config to suit your
card & monitor.</P>
<P><B><A NAME=2.2.1.6>2.2.1.6. Framebuffer output (FBdev)</A></B></P>
<P>Whether to build the FBdev target is autodetected during ./configure .
Read the framebuffer documentation in the kernel sources
(Documentation/fb/*) for info on how to enable it, etc.. !</P>
<P>If your card doesn't support VBE 2.0 standard (older ISA/PCI
cards, such as S3 Trio64), only VBE 1.2 (or older?) :
Well, VESAfb is still available, but you'll have to load SciTech Display
Doctor (formerly UniVBE) before booting Linux. Use a DOS boot disk or
whatever. And don't forget to register your UniVBE ;))</P>
<P>The FBdev output takes some additional parameters above the others:</P>
<P><TABLE BORDER=0>
<TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-fb</TD><TD> </TD><TD>
<FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>specify the framebuffer device to use (/dev/fd0)</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-fbmode</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>mode name to use (according to /etc/fb.modes)</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-fbmodeconfig</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2> config file of modes (default /etc/fb.modes)</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-monitor_hfreq</TD><TD></TD><TD ROWSPAN=3><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>IMPORTANT values, see example.conf</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-monitor_vfreq</TD><TD></TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-monitor_dotclock</TD><TD></TD><TR>
</TABLE></P>
<P>If you want to change to a specific mode, then use</P>
<P><CODE> mplayer -vm -fbmode (NameOfMode) filename</CODE></P>
<P><UL><LI><B>-vm</B> alone will choose the most suitable mode from /etc/fb.modes . Can be
used together with -x and -y options too. The -flip option is supported only
if the movie's pixel format matches the video mode's pixel format.
Pay attention to the bpp value, fbdev driver tries to use the current,
or if you specify the -bpp option, then that.
<LI><B>-zoom</B> option isn't supported (software scaling is slow). -fs option
isn't supported. You can't use 8bpp (or less) modes.</UL></P>
<P>NOTE: FBdev video mode changing _does not work_ with the VESA framebuffer,
and don't ask for it, since it's not an <B>MPlayer</B> limitation.</P>
<P><B><A NAME=2.2.1.7>2.2.1.7. Matrox framebuffer (mga_vid)</A></B></P>
<P>This section is about the Matrox G200/G400/G450/G550 BES (Back-End Scaler)
support, the mga_vid kernel driver. It's active developed by me (A'rpi), and
it has hardware VSYNC support with triple buffering. It works on both
framebuffer console and under X.</P>
<P>To use it, you first have to compile mga_vid.o:</P>
<P><CODE> cd drivers<BR>
make</CODE></P>
<P>Then create /dev/mga_vid device:</P>
<P><CODE> mknod /dev/mga_vid c 178 0</CODE></P>
<P>and load the driver with</P>
<P><CODE> insmod mga_vid.o</CODE></P>
<P>You should verify the memory size detection using the 'dmesg' command. If
it's bad, use the mga_ram_size option (rmmod mga_vid first), specify card's
memory size in MB:</P>
<P><CODE> insmod mga_vid.o mga_ram_size=16</CODE></P>
<P>To make it load/unload automatically when needed, insert the following line
at the end of /etc/modules.conf:</P>
<P><CODE> alias char-major-178 mga_vid</CODE></P>
<P>Then run</P>
<P><CODE> depmod -a</CODE></P>
<P>Now you have to (re)compile <B>MPlayer</B>, ./configure will detect /dev/mga_vid
and build the 'mga' driver. Using it from <B>MPlayer</B> goes by '-vo mga' if
you have matroxfb console, or '-vo xmga' under XFree86 3.x.x or 4.x.x.</P>
<P>The mga_vid driver cooperates with Xv.</P>
<P><B><A NAME=2.2.1.8>2.2.1.8. SiS 6326 framebuffer (sis_vid)</A></B></P>
<P>SiS 6326 YUV Framebuffer driver -> sis_vid kernel driver</P>
<P>Its interface should be compatible with the mga_vid, but the driver was not
updated after the mga_vid changes, so it's outdated now. Volunteers
needed to test it and bring the code up-to-date.</P>
<P><B><A NAME=2.2.1.9>2.2.1.9. 3dfx YUV support (tdfxfb)</A></B></P>
<P>This driver uses the kernel's tdfx framebuffer driver to play movies with
YUV acceleration. You'll need a kernel with tdfxfb support, and recompile with
<CODE>./configure --enable-tdfxfb</CODE></P>
<P><B><A NAME=2.2.1.10>2.2.1.10. OpenGL output</A></B></P>
<P><B>MPlayer</B> support displaying movies using OpenGL. Unfortunately, not all
drivers support this ability. For example the Utah-GLX drivers
(for XFree86 3.3.6) have it, with all cards.
See <A HREF="http://utah-glx.sourceforge.net">http://utah-glx.sourceforge.net</A>
for details about how to install it.</P>
<P>XFree86(DRI) >= 4.0.3 supports it only with Matrox, and Radeon cards.
See <A HREF="http://dri.sourceforge.net">http://dri.sourceforge.net</A> for download,
and installation instructions.</P>
<P><B><A NAME=2.2.1.11>2.2.1.11. AAlib - text mode displaying</B></P>
<P><B>AAlib</B> is a library for displaying graphics in text mode, using powerful
ASCII renderer. There are LOTS of programs already supporting it, like Doom,
Quake, etc. MPlayer contains a very usable driver for it.
If ./configure detects aalib installed, the aalib libvo driver will be built.</P>
<P><TABLE BORDER=0>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>You can use some keys in the AA Window to change rendering options:</B></P></TD><TR>
<TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>1</TD><TD> </TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>decrease contrast</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>2</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>increase contrast</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>3</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>decrease brightness</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>4</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>increase brightness</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>5</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>switch fast rendering on/off</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>6</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>set dithering mode (none, error distribution, floyd steinberg)</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>7</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>invert image</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>a</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>toggles between aa and mplayer control)</TD><TR>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>The following command line options can be used:</B></P></TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-aaosdcolor=V</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>change osd color</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-aasubcolor=V</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>change subtitle color</TD><TR>
<TD COLSPAN=3></TD><TD><P><I><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>where V can be: (0/normal, 1/dark, 2/bold, 3/boldfont, 4/reverse, 5/special)</P></TD><TR>
<TD COLSPAN=4><P><B><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>AAlib itselves provides a large sum of options.
Here are some important:</P></B></TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-aadriver</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>set recommended aa driver (X11, curses, linux)</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-aaextended</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>use all 256 characters</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-aaeight</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>use eight bit ascii</TD><TR>
<TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>-aahelp</TD><TD></TD><TD><FONT face="Verdana, Arial, Helvetica, sans-serif" size=2>prints out all aalib options</TD><TR>
</TABLE></P>
<P>NOTE: the rendering is very CPU intensive, especially when using AA-on-X
(using aalib on X), and it's least CPU intensive on standard,
non-framebuffer console. Use SVGATextMode to set up a big textmode,
then enjoy! (secondary head Hercules cards rock :)) (anyone can enhance
bdev to do conversion/dithering to hgafb? Would be neat :)</P>
<P>Use the -framedrop option if your comp isn't fast enough to render all frames!</P>
<P>Playing on terminal you'll get better speed and quality using the linux driver, not
curses (-aadriver linux). But therefore you need write access on /dev/vcsa<terminal>!
That isn't autodetected by aalib, bu vo_aa tries to find the best mode.
See <A HREF="http://aa-project.sourceforge.net/tune/">http://aa-project.sourceforge.net/tune/</A> for further tuning issues.</P>
<P><B><A NAME=2.2.1.A>2.2.1.A. TV-out support</A></B></P>
<P><B><A NAME=2.2.1.A.1>2.2.1.A.1. Matrox cards</A></B></P>
<P><I> What I'd love to see in mplayer is the the same feature that I see in my
windows box. When I start a movie in windows (in a window or in full screen)
the movie is also redirected to the tv-out and I can also see it full screen
on my tv. I love this feature and was wondering how hard it would be to add
such a feature to mplayer.</I></P>
<P>It's a driver limitation. BES (Back-End Scaler, it's the overlay generator
and YUV scaling engine of G200/G400/G450/G550 cards) works only with CRTC1.
Normally, CRTC1 (textmode, every bpp gfx and BES) is routed to HEAD1,
and CRTC2 (only 16/32bpp gfx) is routed to HEAD2 (TV-out).</P>
<P>Under linux, you have two choices to get TV-out working:</P>
<P><UL>
<LI>Using X 4.0.x + the HAL driver from matrox, so you'll get dual-head
support, and you'll be able to redirect second output to the TV.
Unfortunately it has Macrovision encryption enabled, so it will
only work on directly-connected TV, no through VCR.
Other problem is that Xv doesn't work on the second head.
(I don't know how Windows solve it, maybe it swaps the CRTCs between
the heads, or just uses YUV framebuffer of second DAC with some trick)
<LI>Using matroxfb with dual-head support enabled (2.4.x kernels).
You'll be able to get a framebuffer console (using CRTC2, so it's
slow), and TV-out (using CRTC1, with BES support).
You have to forget X while using this kind of TV-out! :(
</UL></P>
<P>Follow these instructions:</P>
<P><UL>
<LI>Compile all the matrox-related things to modules in the kernel.
(you MUST compile them to modules, at least I couldn't get them
working built-in yet)
[reboot to new kernel & install modules, but don't load them yet!]
<P><CODE>
cd TVout<BR>
./compile.sh</CODE></P>
<LI>Run the 'modules' script from the TV-out directory of mplayer.
It will switch your console to framebuffer.
Change to tty1 (ALT+F1)!
Now run the script 'independent', it will set up your tty's:
<P>tty 1,2: fb console, CRTC2, head 1 (monitor)<BR>
tty 3,4,5...: framebuffer+BES, CRTC1, head 2 (TV-out)</P>
You should run the scripts TV-* and Mon-* to set up resolutions:
<P>change to tty1 (ALT+F1), and run Mon-* (one of them)<BR>
change to tty3 (ALT+F3) and then back to tty1 (ALT+F1)</P>
(this change will select tty3 on /dev/fb1 - tricky)<BR>
<P>run TV-* (one of them)</P>
(now you'll get a console on your PAL TV - don't know about NTSC)
<P>Now if you start mplayer (on tty1), the picture will show up on
the tty3, so you'll see it on your TV or second monitor.</P>
</UL></P>
<P>Yes, it is a bit 'hack' now. But I'm waiting for the marvel
project to be finished, it will provide real TV-out drivers, I hope.</P>
<P>My current problem is that BES is working only with CRTC1. So picture
will always shown up on head routed to CRTC1 (normaly the monitor),
so i have to swap CRTC's, but this way your console will framebuffer
(CRTC2 can't do text-mode) and a bit slow (no acceleration). :(</P>
<P><I>Anyway i also just get monochrome output on the tv ...</I>
Maybe you have NTSC TV? Or just didn't run one of TV-* scripts.</P>
<P><B><A NAME=2.2.1.A.1a>2.2.1.A.1a. Matrox cards (method 2 - the XFree approach)</A></B></P>
<P>The previous method doesn't work very good for X users, since either they
have to shutdown it, or it becomes uselessly messy. This section is for them.</P>
<P>
<LI>compile the matroxfb stuff to modules</LI>
<LI>load modules with the <CODE>./modules</CODE> script</LI>
<LI>turn on display cloning with <CODE>./cloning</CODE></LI>
<LI>execute <CODE>./TV-640x512</CODE> or whichever resolution you
wish to use</LI>
</P>
<P>Now you should have a clean picture on the TV, and maybe a somewhat strange
picture on the console. But console doesn't matter, start X. Your TV
goes black or have strange stripes, but monitor/X is fine !<BR>
So, anytime you want to start watching something on TV, just start
<B>MPlayer</B> in X (<CODE>-vo mga</CODE> of course, and calculate
<CODE>-x</CODE> and <CODE>-y</CODE> values by hand), change to tty1 (with
ctrl-alt-f1), and turn off the monitor.
</P>
<P><B><A NAME=2.2.1.A.2>2.2.1.A.2. ATI cards</A></B></P>
<P>
<b>A few word about ATI's TV-out:</b><BR>
Currently ATI doesn't want to support any of its TV-out chips under Linux.
Below is official answer from ATI Inc.:
<P>
<code>
<i>
<br>> Hello!
<br>>
<br>> On your pages you wrote that you support linux developers.
<br>> Currently I participate with mplayer project (www.mplayerhq.hu)
<br>> I'm interesting with enabling TV-out on Radeon VE chips during
<br>> movie playback. I would be glad to add this feature to radeonfb driver
<br>> (which can be found in CVS tree of mplayer project at main/drivers/radeon).
<br>> Do I have a chance to get any official technical documenation?
</i>
<br>We will not provide TV out related documents due to macrovision concerns.
<br>Also mpeg2 decoding is something that we MAY consider in the future but not
<br>at this current time. This is again due to proprietary and 3rd party
<br>information.
</code>
</P>
<P>Pity isn't?</P>
<P>
<code>
<B>Q:What is Macrovision?</B><BR>
A:It's copy protection mechanism.</code>
</P>
<P>It means that if they open any TV-out related information then
hackers will be able to disable copy protection on their chips. Therefore
we have no chance to get working TV-out on ATI.</P>
<P>What's status of ATI's tv-out chips under Linux:
<LI><b>ATI Mach64</b> has <i>ImpacTV</i> which is supported by gatos.
<LI><b>ASIC Radeon VIVO</b> has <i>Rage Theatre</i> which is supported by gatos.
<LI><b>Radeon VE</b> and <b>Rage PRO LT</b> have <i>ImpacTV2+</i> which is not supported under Linux.</P>
<P>
From other side - we could have a chance to have TV-out support through
<b>VESA drivers</b> on x86 systems but since Linux has too limited <i>vm86 syscall</i>
- it's unreachable on practice. Finely every access to IO space causes exception
and driver attempts to emulate even VESA calls instead passing them to native
int_10h handler.
</P>
</P>
</BODY>
</HTML>
|
