mirror of https://github.com/mpv-player/mpv
2142 lines
74 KiB
XML
2142 lines
74 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
|
||
<sect2 id="video-dev">
|
||
<title>Video output devices</title>
|
||
|
||
<sect3 id="mtrr">
|
||
<title>Setting up MTRR</title>
|
||
|
||
<para>
|
||
It is VERY recommended to check if the MTRR registers
|
||
are set up properly, because they can give a big performance boost.
|
||
</para>
|
||
|
||
<para>
|
||
Do a <command>/proc/mtrr</command>:
|
||
<screen>
|
||
<prompt>--($:~)--</prompt> cat /proc/mtrr
|
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reg00: base=0xe4000000 (3648MB), size= 16MB: write-combining, count=9
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reg01: base=0xd8000000 (3456MB), size= 128MB: write-combining, count=1<!--
|
||
--></screen>
|
||
</para>
|
||
|
||
<para>
|
||
It's right, shows my Matrox G400 with 16MB memory. I did this from
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XFree 4.x.x , which sets up MTRR registers automatically.
|
||
</para>
|
||
|
||
<para>
|
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If nothing worked, you have to do it manually. First, you have to find the
|
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base address. You have 3 ways to find it:
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||
|
||
<orderedlist>
|
||
<listitem><para>
|
||
from X11 startup messages, for example:
|
||
<screen>
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||
(--) SVGA: PCI: Matrox MGA G400 AGP rev 4, Memory @ 0xd8000000, 0xd4000000
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(--) SVGA: Linear framebuffer at 0xD8000000<!--
|
||
--></screen>
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</para></listitem>
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||
<listitem><para>
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from <filename>/proc/pci</filename> (use <command>lspci -v</command>
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command):
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<screen>
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01:00.0 VGA compatible controller: Matrox Graphics, Inc.: Unknown device 0525
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Memory at d8000000 (32-bit, prefetchable)
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</screen>
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||
</para></listitem>
|
||
<listitem><para>
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from mga_vid kernel driver messages (use <command>dmesg</command>):
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<screen>mga_mem_base = d8000000</screen>
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</para></listitem>
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||
</orderedlist>
|
||
</para>
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||
|
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<para>
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Then let's find the memory size. This is very easy, just convert video RAM
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size to hexadecimal, or use this table:
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<informaltable frame="none">
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<tgroup cols="2">
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<tbody>
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<row><entry>1 MB</entry><entry>0x100000</entry></row>
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<row><entry>2 MB</entry><entry>0x200000</entry></row>
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<row><entry>4 MB</entry><entry>0x400000</entry></row>
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<row><entry>8 MB</entry><entry>0x800000</entry></row>
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<row><entry>16 MB</entry><entry>0x1000000</entry></row>
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<row><entry>32 MB</entry><entry>0x2000000</entry></row>
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</tbody>
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||
</tgroup>
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||
</informaltable>
|
||
</para>
|
||
|
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<para>
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You know base address and memory size, let's setup MTRR registers!
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For example, for the Matrox card above (<literal>base=0xd8000000</literal>)
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with 32MB ram (<literal>size=0x2000000</literal>) just execute:
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<screen>
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echo "base=0xd8000000 size=0x2000000 type=write-combining" >| /proc/mtrr
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</screen>
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||
</para>
|
||
|
||
<para>
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Not all CPUs support MTRRs. For example older K6-2's (around 266MHz,
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stepping 0) doesn't support MTRR, but stepping 12's do (<command>cat /proc/cpuinfo
|
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</command> to check it).
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||
</para>
|
||
</sect3>
|
||
|
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<sect3 id="output-trad">
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<title>Video outputs for traditional video cards</title>
|
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<sect4 id="xv">
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<title>Xv</title>
|
||
|
||
<para>
|
||
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 '<option>-vo
|
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xv</option>' uses. Also, this is driver supports adjusting
|
||
brightness/contrast/hue/etc (unless you use the old, slow DirectShow DivX
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||
codec, which supports it everywhere), see the man page.
|
||
</para>
|
||
|
||
<para>
|
||
In order to make this work, be sure to check the following:
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||
|
||
<orderedlist>
|
||
<listitem><para>
|
||
You have to use XFree86 4.0.2 or newer (former versions don't have XVideo)
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Your card actually supports hardware acceleration (modern cards do)
|
||
</para></listitem>
|
||
<listitem><para>
|
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X loads the XVideo extension, it's something like this:
|
||
<programlisting>(II) Loading extension XVideo</programlisting>
|
||
in <filename>/var/log/XFree86.0.log</filename>
|
||
<note><para>
|
||
This loads only the XFree86's extension. In a good install, this is
|
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always loaded, and doesn't mean that the <emphasis role="bold">card's</emphasis>
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||
XVideo support is loaded!
|
||
</para></note>
|
||
</para></listitem>
|
||
<listitem><para>
|
||
Your card has Xv support under Linux. To check, try
|
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<command>xvinfo</command>, it is the part of the XFree86 distribution. It
|
||
should display a long text, similar to this:
|
||
<screen>
|
||
X-Video Extension version 2.2
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||
screen #0
|
||
Adaptor #0: "Savage Streams Engine"
|
||
number of ports: 1
|
||
port base: 43
|
||
operations supported: PutImage
|
||
supported visuals:
|
||
depth 16, visualID 0x22
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||
depth 16, visualID 0x23
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||
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...)<!--
|
||
--></screen>
|
||
It must support YUY2 packed, and YV12 planar pixel formats to be usable
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with <application>MPlayer</application>.
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||
</para></listitem>
|
||
<listitem><para>
|
||
And finally, check if <application>MPlayer</application> was compiled
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with 'xv' support. <filename>./configure</filename> prints this.
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</para></listitem>
|
||
</orderedlist>
|
||
</para>
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||
|
||
<sect5 id="tdfx">
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<title>3dfx cards</title>
|
||
|
||
<para>
|
||
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 4.2.0 or greater, it works OK with YV12 and YUY2. Previous
|
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versions, including 4.1.0, <emphasis role="bold">crashes with YV12</emphasis>.
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If you experience strange effects using -vo xv, try SDL (it has XVideo too) and
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see if it helps. Check the <link linkend="sdl">SDL section</link> for details.
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</para>
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||
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<para>
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<emphasis role="bold">OR</emphasis>, try the NEW
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<option>-vo tdfxfb</option> driver! See the <link linkend="tdfxfb">tdfxfb</link>
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section.
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</para>
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||
</sect5>
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||
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||
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||
<sect5 id="s3">
|
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<title>S3 cards</title>
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||
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<para>
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S3 Savage3D's should work fine, but for Savage4, use XFree86 version 4.0.3
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or greater (in case of image problems, try 16bpp). As for S3 Virge: there is
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xv support, but the card itself is very slow, so you better sell it.
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</para>
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||
|
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<note>
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<para>
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It's currently unclear which Savage models lack YV12 support, and convert by
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driver (slow). If you suspect your card, get a newer driver, or ask politely
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on the mplayer-users mailing list for an MMX/3DNow enabled driver.
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</para>
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</note>
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||
</sect5>
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||
|
||
|
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<sect5 id="nvidia">
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<title>nVidia cards</title>
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<para>
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nVidia isn't a very good choice under Linux (according to nVidia, this is
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<link linkend="nvidia-opinions">not true</link>)... You'll have to use the
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binary closed-source nVidia driver, available at nVidia's web site. The
|
||
standard XFree86 driver doesn't support XVideo for these cards, due to
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||
nVidia's closed sources/specifications.
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||
</para>
|
||
|
||
<para>
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As far as I know the latest XFree86 driver contains XVideo support for
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GeForce 2 and 3.
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</para>
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||
|
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<para>
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Riva128 cards don't have XVideo support even with the nVidia driver :(
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Complain to nVidia.
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</para>
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||
</sect5>
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||
|
||
|
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<sect5 id="ati">
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<title>ATI cards</title>
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<para>
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The <ulink url="http://www.linuxvideo.org/gatos">GATOS driver</ulink>
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||
(which you should use, unless you have Rage128 or Radeon) has VSYNC enabled
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by default. It means that decoding speed (!) is synced to the monitor's
|
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refresh rate. If playing seems to be slow, try disabling VSYNC somehow, or
|
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set refresh rate to a n*(fps of the movie) Hz.
|
||
</para>
|
||
|
||
<para>
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Radeon VE - currently only XFree86 CVS has driver for this card, version
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4.1.0 doesn't. And no TV out support. Of course with
|
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<application>MPlayer</application> you can
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happily get <emphasis role="bold">accelerated</emphasis> display, with or without
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<emphasis role="bold">TV output</emphasis>, and no libraries or X are needed.
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||
Read the <link linkend="vidix">VIDIX</link> section.
|
||
</para>
|
||
</sect5>
|
||
|
||
|
||
<sect5 id="neomagic">
|
||
<title>NeoMagic cards</title>
|
||
|
||
<para>
|
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These cards can be found in many laptops. Unfortunately, the driver in X
|
||
4.2.0 can't do Xv, but we have a modified, Xv-capable driver for you.
|
||
<ulink url="http://www.mplayerhq.hu/MPlayer/contrib/NeoMagic-driver/neomagic_drv.o.4.2.0.bz2">
|
||
Download from here</ulink>.
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||
Driver provided by Stefan Seyfried.
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||
</para>
|
||
|
||
<para>
|
||
To allow playback of DVD sized content change your XF86Config like this:
|
||
<programlisting>
|
||
Section "Device"
|
||
[...]
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||
Driver "neomagic"
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||
<emphasis>Option "OverlayMem" "829440"</emphasis>
|
||
[...]
|
||
EndSection<!--
|
||
--></programlisting>
|
||
</para>
|
||
</sect5>
|
||
|
||
|
||
<sect5 id="trident">
|
||
<title>Trident cards</title>
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||
<para>
|
||
If you want to use xv with a trident card, provided that it doesn't work
|
||
with 4.1.0, install XFree 4.2.0. 4.2.0 adds support for fullscreen xv
|
||
support with the Cyberblade XP card.
|
||
</para>
|
||
</sect5>
|
||
|
||
|
||
<sect5 id="kyro">
|
||
<title>Kyro/PowerVR cards</title>
|
||
<para>
|
||
If you want to use Xv with a Kyro based card (for example Hercules
|
||
Prophet 4000XT), you should download the drivers from the
|
||
<ulink url="http://www.powervr.com/">PowerVR site</ulink>
|
||
</para>
|
||
</sect5>
|
||
</sect4>
|
||
|
||
<!-- ********** -->
|
||
|
||
<sect4 id="dga">
|
||
<title>DGA</title>
|
||
|
||
<formalpara>
|
||
<title>PREAMBLE</title>
|
||
<para>
|
||
This document tries to explain in some words what DGA is in general and
|
||
what the DGA video output driver for <application>MPlayer</application>
|
||
can do (and what it can't).
|
||
</para>
|
||
</formalpara>
|
||
|
||
<formalpara>
|
||
<title>WHAT IS DGA</title>
|
||
<para>
|
||
<acronym>DGA</acronym> is short for <emphasis>Direct Graphics
|
||
Access</emphasis> 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 <systemitem
|
||
class="username">root</systemitem> or by setting the SUID bit on the
|
||
<application>MPlayer</application> executable (<emphasis role="bold">not
|
||
recommended</emphasis>).
|
||
</para>
|
||
</formalpara>
|
||
<para>
|
||
There are two versions of DGA: DGA1 is used by XFree 3.x.x and DGA2 was
|
||
introduced with XFree 4.0.1.
|
||
</para>
|
||
|
||
<para>
|
||
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.
|
||
</para>
|
||
|
||
<para>
|
||
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 X server, switch to a depth of 15 bits and vice
|
||
versa.
|
||
</para>
|
||
|
||
<para>
|
||
However DGA has some drawbacks. It seems it is somewhat dependent on the
|
||
graphics chip you use and on the implementation of the X server's video
|
||
driver that controls this chip. So it does not work on every system...
|
||
</para>
|
||
|
||
<formalpara>
|
||
<title>INSTALLING DGA SUPPORT FOR MPLAYER</title>
|
||
|
||
<para>
|
||
First make sure X loads the DGA extension, see in
|
||
<filename>/var/log/XFree86.0.log</filename>:
|
||
|
||
<programlisting>(II) Loading extension XFree86-DGA</programlisting>
|
||
|
||
See, XFree86 4.0.x or greater is VERY RECOMMENDED!
|
||
<application>MPlayer</application>'s DGA driver is autodetected by
|
||
<filename>./configure</filename>, or you can force it
|
||
with <option>--enable-dga</option>.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<para>
|
||
If the driver couldn't switch to a smaller resolution, experiment with
|
||
options <option>-vm</option> (only with X 3.3.x), <option>-fs</option>,
|
||
<option>-bpp</option>, <option>-zoom</option> to find a video mode that
|
||
the movie fits in. There is no converter right now :(
|
||
</para>
|
||
|
||
<para>
|
||
Become <systemitem class="username">root</systemitem>. DGA needs root
|
||
access to be able to write directly video memory. If you want to run it as
|
||
user, then install <application>MPlayer</application> SUID root:
|
||
|
||
<screen>
|
||
chown root /usr/local/bin/mplayer
|
||
chmod 750 /usr/local/bin/mplayer
|
||
chmod +s /usr/local/bin/mplayer
|
||
</screen>
|
||
|
||
Now it works as a simple user, too.
|
||
</para>
|
||
|
||
<caution>
|
||
<title>Security risk</title>
|
||
<para>
|
||
This is a <emphasis role="bold">big</emphasis> security risk! Never do this
|
||
on a server or on a computer can be accessed by other people because they
|
||
can gain root privileges through SUID root
|
||
<application>MPlayer</application>.
|
||
</para>
|
||
</caution>
|
||
|
||
<para>
|
||
Now use <option>-vo dga</option> option, and there you go! (hope so:) You
|
||
should also try if the <option>-vo sdl:dga</option> option works for you!
|
||
It's much faster!
|
||
</para>
|
||
|
||
|
||
<formalpara id="dga-modelines">
|
||
<title>RESOLUTION SWITCHING</title>
|
||
|
||
<para>
|
||
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 honoring aspect ratio) of the video data, but the X
|
||
server only allows switching to resolutions predefined in
|
||
<filename>/etc/X11/XF86Config</filename>
|
||
(<filename>/etc/X11/XF86Config-4</filename> for XFree 4.X.X respectively).
|
||
Those are defined by so-called modelines and depend on
|
||
the capabilities of your video hardware. The X server 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: <filename>/var/log/XFree86.0.log</filename>.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<para>
|
||
These entries are known to work fine with a Riva128 chip, using the nv.o X
|
||
server driver module.
|
||
</para>
|
||
|
||
|
||
<para><programlisting>
|
||
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
|
||
</programlisting></para>
|
||
|
||
|
||
<formalpara>
|
||
<title>DGA & MPLAYER</title>
|
||
<para>
|
||
DGA is used in two places with <application>MPlayer</application>: The SDL
|
||
driver can be made to make use of it (<option>-vo sdl:dga</option>) and
|
||
within the DGA driver (<option>-vo dga</option>). The above said is true
|
||
for both; in the following sections I'll explain how the DGA driver for
|
||
<application>MPlayer</application> works.
|
||
</para>
|
||
</formalpara>
|
||
|
||
|
||
<formalpara>
|
||
<title>FEATURES</title>
|
||
|
||
<para>
|
||
The DGA driver is invoked by specifying <option>-vo dga</option> at the
|
||
command line. The default behavior is to switch to a resolution matching
|
||
the original resolution of the video as close as possible. It deliberately
|
||
ignores the <option>-vm</option> and <option>-fs</option> options
|
||
(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 <option>-x</option>
|
||
and <option>-y</option>. By providing the <option>-v</option> option, the
|
||
DGA driver will print, among a lot of other things, a list of all
|
||
resolutions supported by your current <filename>XF86Config</filename> file.
|
||
Having DGA2 you may also force it to use a certain depth by using the
|
||
<option>-bpp</option> 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.
|
||
</para>
|
||
</formalpara>
|
||
<para>
|
||
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.
|
||
</para>
|
||
|
||
<para>
|
||
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.
|
||
</para>
|
||
|
||
<para>
|
||
Doublebuffering may be switched on by using the option
|
||
<option>-double</option> and may be disabled with
|
||
<option>-nodouble</option>. 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.
|
||
</para>
|
||
|
||
|
||
<formalpara>
|
||
<title>SPEED ISSUES</title>
|
||
|
||
<para>
|
||
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
|
||
<application>MPlayer</application> 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 <command>top</command> to see what is really
|
||
going on in your box.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<para>
|
||
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.
|
||
</para>
|
||
|
||
<para>
|
||
If you have a slow system, better use 15 or 16 bit depth since they require
|
||
only half the memory bandwidth of a 32 bit display.
|
||
</para>
|
||
|
||
<para>
|
||
Using a depth of 24 bit 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.
|
||
</para>
|
||
|
||
<para>
|
||
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.
|
||
</para>
|
||
|
||
|
||
<formalpara>
|
||
<title>KNOWN BUGS</title>
|
||
|
||
<para>
|
||
Well, according to some developers 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.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<itemizedlist>
|
||
<listitem><simpara>
|
||
With XFree 4.0.3 and <filename>nv.o</filename> there is a bug resulting
|
||
in strange colors.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
ATI driver requires to switch mode back more than once after finishing
|
||
using of DGA.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
Some drivers simply fail to switch back to normal resolution (use
|
||
<keycap>Ctrl</keycap>+<keycap>Alt</keycap>+<keycap>Keypad +</keycap> and
|
||
<keycap>Ctrl</keycap>+<keycap>Alt</keycap>+<keycap>Keypad -</keycap>
|
||
to switch back manually).
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
Some drivers simply display strange colors.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
Some drivers lie about the amount of memory they map into the process's
|
||
address space, thus vo_dga won't use doublebuffering (SIS?).
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
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 something like that.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
OSD only works with doublebuffering enabled (else it flickers).
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
|
||
</sect4>
|
||
<!--</sect3>-->
|
||
|
||
<!-- ********** -->
|
||
|
||
<sect4 id="sdl">
|
||
<title>SDL</title>
|
||
|
||
<para>
|
||
SDL (Simple Directmedia Layer) is basically a unified
|
||
video/audio interface. Programs that use it know only about SDL, and not
|
||
about what video or audio driver does SDL actually use. For example a Doom
|
||
port using SDL can run on svgalib, aalib, X, fbdev, and others, you only
|
||
have to specify the (for example) video driver to use with the
|
||
<envar>SDL_VIDEODRIVER</envar> environment variable. Well, in theory.
|
||
</para>
|
||
|
||
<para>
|
||
With <application>MPlayer</application>, we used its X11 driver's software
|
||
scaler ability for cards/drivers that doesn't support XVideo, until we made
|
||
our own (faster, nicer) software scaler. Also we used its aalib output, but
|
||
now we have ours which is more comfortable. Its DGA mode was better than
|
||
ours, until recently. Get it now? :)
|
||
</para>
|
||
|
||
<para>
|
||
It also helps with some buggy drivers/cards if the video is jerky (not slow
|
||
system problem), or audio is lagging.
|
||
</para>
|
||
|
||
<para>
|
||
SDL video output supports displaying subtitles under the movie, on the (if
|
||
present) black bar.
|
||
</para>
|
||
|
||
<variablelist>
|
||
<title>There are several command line switches for SDL:</title>
|
||
<varlistentry>
|
||
<term><option>-vo sdl:<replaceable>name</replaceable></option></term>
|
||
<listitem><simpara>
|
||
specifies SDL video driver to use (i.e. <literal>aalib</literal>,
|
||
<literal>dga</literal>, <literal>x11</literal>)
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-ao sdl:<replaceable>name</replaceable></option></term>
|
||
<listitem><simpara>
|
||
specifies SDL audio driver to use (i.e. <literal>dsp</literal>,
|
||
<literal>esd</literal>, <literal>arts</literal>)
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-noxv</option></term>
|
||
<listitem><simpara>
|
||
disables XVideo hardware acceleration
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-forcexv</option></term>
|
||
<listitem><simpara>
|
||
tries to force XVideo acceleration
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
|
||
<table>
|
||
<title>SDL keys</title>
|
||
<tgroup cols="2">
|
||
<thead>
|
||
<row><entry>Key</entry><entry>Action</entry></row>
|
||
</thead>
|
||
<tbody>
|
||
<row><entry><keycap>F</keycap></entry><entry>
|
||
toggles fullscreen/windowed mode
|
||
</entry></row>
|
||
<row><entry><keycap>C</keycap></entry><entry>
|
||
cycles available fullscreen modes
|
||
</entry></row>
|
||
<row><entry><keycap>W</keycap>/<keycap>S</keycap></entry><entry>
|
||
mappings for <keycap>*</keycap> and <keycap>/</keycap> (mixer control)
|
||
</entry></row>
|
||
</tbody>
|
||
</tgroup>
|
||
</table>
|
||
|
||
<itemizedlist>
|
||
<title>Known bugs:</title>
|
||
<listitem><simpara>
|
||
Keys pressed under sdl:aalib console driver repeat forever. (use
|
||
<option>-vo aa</option>!) It's bug in SDL, I can't change it (tested with
|
||
SDL 1.2.1).
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
DO NOT USE SDL with GUI! It won't work as it should.
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="svgalib">
|
||
<title>SVGAlib</title>
|
||
|
||
<formalpara>
|
||
<title>INSTALLATION</title>
|
||
<para>
|
||
You'll have to install svgalib and its development package in order for
|
||
<application>MPlayer</application> build its SVGAlib driver (autodetected,
|
||
but can be forced), and don't forget to edit
|
||
<filename>/etc/vga/libvga.config</filename> to suit your card and monitor.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<note>
|
||
<para>
|
||
Be sure not to use the <option>-fs</option> switch, since it toggles the
|
||
usage of the software scaler, and it's slow. If you really need it, use the
|
||
<option>-sws 4</option> option which will produce bad quality, but is
|
||
somewhat faster.
|
||
</para>
|
||
</note>
|
||
|
||
<formalpara><title>EGA (4BPP) SUPPORT</title>
|
||
<para>
|
||
SVGAlib incorporates EGAlib, and <application>MPlayer</application> has the
|
||
possibility to display any movie in 16 colors, thus usable in the following
|
||
sets:
|
||
</para>
|
||
</formalpara>
|
||
|
||
<itemizedlist>
|
||
<listitem><simpara>
|
||
EGA card with EGA monitor: 320x200x4bpp, 640x200x4bpp, 640x350x4bpp
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
EGA card with CGA monitor: 320x200x4bpp, 640x200x4bpp
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
|
||
<para>
|
||
The bpp (bits per pixel) value must be set to 4 by hand:
|
||
<option>-bpp 4</option>
|
||
</para>
|
||
|
||
<para>
|
||
The movie probably must be scaled down to fit in EGA mode:
|
||
<screen>-vf scale=640:350</screen>
|
||
or
|
||
<screen>-vf scale=320:200</screen>
|
||
</para>
|
||
|
||
<para>
|
||
For that we need fast but bad quality scaling routine:
|
||
<screen>-sws 4</screen>
|
||
</para>
|
||
|
||
<para>
|
||
Maybe automatic aspect correction has to be shut off:
|
||
<screen>-noaspect</screen>
|
||
</para>
|
||
|
||
<note><para>
|
||
According to my experience the best image quality on
|
||
EGA screens can be achieved by decreasing the brightness a bit:
|
||
<option>-vf eq=-20:0</option>. I also needed to lower the audio
|
||
samplerate on my box, because the sound was broken on 44kHz:
|
||
<option>-srate 22050</option>.
|
||
</para></note>
|
||
|
||
<para>
|
||
You can turn on OSD and subtitles only with the <systemitem>expand</systemitem>
|
||
filter, see the man page for exact parameters.
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="fbdev">
|
||
<title>Framebuffer output (FBdev)</title>
|
||
|
||
<para>
|
||
Whether to build the FBdev target is autodetected during
|
||
<filename>./configure</filename>. Read the framebuffer documentation in
|
||
the kernel sources (<filename>Documentation/fb/*</filename>) for more
|
||
information.
|
||
</para>
|
||
|
||
<para>
|
||
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 ;))
|
||
</para>
|
||
|
||
<para>
|
||
The FBdev output takes some additional parameters above the others:
|
||
</para>
|
||
|
||
<variablelist>
|
||
<varlistentry>
|
||
<term><option>-fb</option></term>
|
||
<listitem><simpara>
|
||
specify the framebuffer device to use (<filename>/dev/fb0</filename>)
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-fbmode</option></term>
|
||
<listitem><simpara>
|
||
mode name to use (according to <filename>/etc/fb.modes</filename>)
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-fbmodeconfig</option></term>
|
||
<listitem><simpara>
|
||
config file of modes (default <filename>/etc/fb.modes</filename>)
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-monitor_hfreq</option></term>
|
||
<term><option>-monitor_vfreq</option></term>
|
||
<term><option>-monitor_dotclock</option></term>
|
||
<listitem><simpara>
|
||
<emphasis role="bold">important</emphasis> values, see
|
||
<filename>example.conf</filename>
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
|
||
<para>
|
||
If you want to change to a specific mode, then use
|
||
<screen>mplayer -vm -fbmode <replaceable>name_of_mode</replaceable> <replaceable>filename</replaceable></screen>
|
||
</para>
|
||
|
||
<itemizedlist>
|
||
<listitem><para>
|
||
<option>-vm</option> alone will choose the most suitable mode from
|
||
<filename>/etc/fb.modes</filename>. Can be used together with
|
||
<option>-x</option> and <option>-y</option> options too. The
|
||
<option>-flip</option> 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
|
||
<option>-bpp</option> option, then that.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
<option>-zoom</option> option isn't supported (software scaling is slow).
|
||
<option>-fs</option> option isn't supported. You can't use 8 bpp (or less)
|
||
modes.
|
||
</para></listitem>
|
||
<listitem><para>
|
||
You possibly want to turn the cursor off:
|
||
<screen>echo -e '\033[?25l'</screen>
|
||
or
|
||
<screen>setterm -cursor off</screen>
|
||
and the screen saver:
|
||
<screen>setterm -blank 0</screen>
|
||
To turn the cursor back on:
|
||
<screen>echo -e '\033[?25h'</screen>
|
||
or
|
||
<screen>setterm -cursor on</screen>
|
||
</para></listitem>
|
||
</itemizedlist>
|
||
|
||
<note>
|
||
<para>
|
||
FBdev video mode changing <emphasis>does not work</emphasis> with the VESA
|
||
framebuffer, and don't ask for it, since it's not an
|
||
<application>MPlayer</application> limitation.
|
||
</para>
|
||
</note>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="mga_vid">
|
||
<title>Matrox framebuffer (mga_vid)</title>
|
||
|
||
<para>
|
||
This section is about the Matrox G200/G400/G450/G550 BES (Back-End Scaler)
|
||
support, the mga_vid kernel driver. It's actively developed by A'rpi, and
|
||
it has hardware VSYNC support with triple buffering. It works on both
|
||
framebuffer console and under X.
|
||
</para>
|
||
|
||
<warning>
|
||
<para>
|
||
This is Linux only! On non-Linux (tested on FreeBSD) systems, you can use
|
||
<link linkend="vidix">VIDIX</link> instead!
|
||
</para>
|
||
</warning>
|
||
|
||
<procedure>
|
||
<title>Installation:</title>
|
||
<step><para>
|
||
To use it, you first have to compile <filename>mga_vid.o</filename>:
|
||
<screen>
|
||
cd drivers
|
||
make<!--
|
||
--></screen>
|
||
</para></step>
|
||
<step><para>
|
||
Then create <filename>/dev/mga_vid</filename> device:
|
||
<screen>mknod /dev/mga_vid c 178 0</screen>
|
||
and load the driver with
|
||
<screen>insmod mga_vid.o</screen>
|
||
</para></step>
|
||
<step><para>
|
||
You should verify the memory size detection using the
|
||
<command>dmesg</command> command. If it's bad, use the
|
||
<option>mga_ram_size</option> option
|
||
(<command>rmmod mga_vid</command> first),
|
||
specify card's memory size in MB:
|
||
<screen>insmod mga_vid.o mga_ram_size=16</screen>
|
||
</para></step>
|
||
<step><para>
|
||
To make it load/unload automatically when needed, first insert the
|
||
following line at the end of <filename>/etc/modules.conf</filename>:
|
||
|
||
<programlisting>alias char-major-178 mga_vid</programlisting>
|
||
|
||
Then copy the <filename>mga_vid.o</filename> module to the appropriate
|
||
place under <filename>/lib/modules/<replaceable>kernel
|
||
version</replaceable>/<replaceable>somewhere</replaceable></filename>.
|
||
</para><para>
|
||
Then run
|
||
<screen>depmod -a</screen>
|
||
</para></step>
|
||
<step><para>
|
||
Now you have to (re)compile <application>MPlayer</application>,
|
||
<filename>./configure</filename> will detect
|
||
<filename>/dev/mga_vid</filename> and build the 'mga' driver. Using it
|
||
from <application>MPlayer</application> goes by <option>-vo mga</option>
|
||
if you have matroxfb console, or <option>-vo xmga</option> under XFree86
|
||
3.x.x or 4.x.x.
|
||
</para></step>
|
||
</procedure>
|
||
|
||
<para>
|
||
The mga_vid driver cooperates with Xv.
|
||
</para>
|
||
|
||
<para>
|
||
The <filename>/dev/mga_vid</filename> device file can be read for some
|
||
info, for example by
|
||
<screen>cat /dev/mga_vid</screen>
|
||
and can be written for brightness change:
|
||
<screen>echo "brightness=120" > /dev/mga_vid</screen>
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="tdfxfb" xreflabel="3Dfx YUV support (tdfxfb)">
|
||
<title>3Dfx YUV support</title>
|
||
<para>
|
||
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
|
||
<screen>./configure --enable-tdfxfb</screen>
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="opengl">
|
||
<title>OpenGL output</title>
|
||
|
||
<para>
|
||
<application>MPlayer</application> supports displaying movies using OpenGL,
|
||
but if your platform/driver supports xv as should be the case on a PC with
|
||
Linux, use xv instead, OpenGL performance is considerably worse. If you
|
||
have an X11 implementation without xv support, OpenGL is a viable
|
||
alternative.
|
||
</para>
|
||
|
||
<para>
|
||
Unfortunately not all drivers support this feature. The Utah-GLX drivers
|
||
(for XFree86 3.3.6) support it for all cards.
|
||
See <ulink url="http://utah-glx.sourceforge.net"/> for details about how to
|
||
install it.
|
||
</para>
|
||
|
||
<para>
|
||
XFree86(DRI) 4.0.3 or later supports OpenGL with Matrox and Radeon cards,
|
||
4.2.0 or later supports Rage128.
|
||
See <ulink url="http://dri.sourceforge.net"/> for download and installation
|
||
instructions.
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="aalib">
|
||
<title>AAlib - text mode displaying</title>
|
||
|
||
<para>
|
||
AAlib is a library for displaying graphics in text mode, using powerful
|
||
ASCII renderer. There are <emphasis>lots</emphasis> of programs already
|
||
supporting it, like Doom, Quake, etc. <application>MPlayer</application>
|
||
contains a very usable driver for it. If <filename>./configure</filename>
|
||
detects aalib installed, the aalib libvo driver will be built.
|
||
</para>
|
||
|
||
<para>
|
||
You can use some keys in the AA Window to change rendering options:
|
||
</para>
|
||
|
||
<informaltable>
|
||
<tgroup cols="2">
|
||
<thead>
|
||
<row><entry>Key</entry><entry>Action</entry></row>
|
||
</thead>
|
||
<tbody>
|
||
<row><entry><keycap>1</keycap></entry><entry>
|
||
decrease contrast
|
||
</entry></row>
|
||
<row><entry><keycap>2</keycap></entry><entry>
|
||
increase contrast
|
||
</entry></row>
|
||
<row><entry><keycap>3</keycap></entry><entry>
|
||
decrease brightness
|
||
</entry></row>
|
||
<row><entry><keycap>4</keycap></entry><entry>
|
||
increase brightness
|
||
</entry></row>
|
||
<row><entry><keycap>5</keycap></entry><entry>
|
||
switch fast rendering on/off
|
||
</entry></row>
|
||
<row><entry><keycap>6</keycap></entry><entry>
|
||
set dithering mode (none, error distribution, Floyd Steinberg)
|
||
</entry></row>
|
||
<row><entry><keycap>7</keycap></entry><entry>
|
||
invert image
|
||
</entry></row>
|
||
<row><entry><keycap>8</keycap></entry><entry>
|
||
toggles between aa and <application>MPlayer</application> control
|
||
</entry></row>
|
||
</tbody>
|
||
</tgroup>
|
||
</informaltable>
|
||
|
||
<variablelist>
|
||
<title>The following command line options can be used:</title>
|
||
<varlistentry>
|
||
<term><option>-aaosdcolor=<replaceable>V</replaceable></option></term>
|
||
<listitem><para>
|
||
change OSD color
|
||
</para></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-aasubcolor=<replaceable>V</replaceable></option></term>
|
||
<listitem><para>
|
||
change subtitle color
|
||
</para><para>
|
||
where <replaceable>V</replaceable> can be:
|
||
<literal>0</literal> (normal),
|
||
<literal>1</literal> (dark),
|
||
<literal>2</literal> (bold),
|
||
<literal>3</literal> (bold font),
|
||
<literal>4</literal> (reverse),
|
||
<literal>5</literal> (special).
|
||
</para></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
|
||
<variablelist>
|
||
<title>AAlib itself provides a large sum of options. Here are some
|
||
important:</title>
|
||
<varlistentry>
|
||
<term><option>-aadriver</option></term>
|
||
<listitem><simpara>
|
||
set recommended aa driver (X11, curses, Linux)
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-aaextended</option></term>
|
||
<listitem><simpara>
|
||
use all 256 characters
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-aaeight</option></term>
|
||
<listitem><simpara>
|
||
use eight bit ASCII
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term><option>-aahelp</option></term>
|
||
<listitem><simpara>
|
||
prints out all aalib options
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
|
||
<note>
|
||
<para>
|
||
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 :)) (but imho you
|
||
can use -vf 1bpp option to get graphics on hgafb:)
|
||
</para>
|
||
</note>
|
||
|
||
<para>
|
||
Use the <option>-framedrop</option> option if your computer isn't fast
|
||
enough to render all frames!
|
||
</para>
|
||
|
||
<para>
|
||
Playing on terminal you'll get better speed and quality using the Linux
|
||
driver, not curses (<option>-aadriver linux</option>). But therefore you
|
||
need write access on
|
||
<filename>/dev/vcsa<replaceable><terminal></replaceable></filename>!
|
||
That isn't autodetected by aalib, but vo_aa tries to find the best mode.
|
||
See <ulink url="http://aa-project.sourceforge.net/tune"/> for further
|
||
tuning issues.
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="vesa">
|
||
<title>VESA - output to VESA BIOS</title>
|
||
|
||
<para>
|
||
This driver was designed and introduced as a <emphasis role="bold">generic
|
||
driver</emphasis> for any video card which has VESA VBE 2.0 compatible
|
||
BIOS. Another advantage of this driver is that it tries to force TV output
|
||
on.
|
||
<citetitle>VESA BIOS EXTENSION (VBE) Version 3.0 Date: September 16,
|
||
1998</citetitle> (Page 70) says:
|
||
</para>
|
||
|
||
<blockquote>
|
||
<formalpara><title>Dual-Controller Designs</title>
|
||
<para>
|
||
VBE 3.0 supports the dual-controller design by assuming that since both
|
||
controllers are typically provided by the same OEM, under control of a
|
||
single BIOS ROM on the same graphics card, it is possible to hide the fact
|
||
that two controllers are indeed present from the application. This has the
|
||
limitation of preventing simultaneous use of the independent controllers,
|
||
but allows applications released before VBE 3.0 to operate normally. The
|
||
VBE Function 00h (Return Controller Information) returns the combined
|
||
information of both controllers, including the combined list of available
|
||
modes. When the application selects a mode, the appropriate controller is
|
||
activated. Each of the remaining VBE functions then operates on the active
|
||
controller.
|
||
</para>
|
||
</formalpara>
|
||
</blockquote>
|
||
|
||
<para>
|
||
So you have chances to get working TV-out by using this driver.
|
||
(I guess that TV-out frequently is standalone head or standalone output
|
||
at least.)
|
||
</para>
|
||
|
||
<itemizedlist spacing="compact">
|
||
<title>ADVANTAGES</title>
|
||
<listitem><simpara>
|
||
You have chances to watch movies <emphasis role="bold">if Linux even doesn't
|
||
know</emphasis> your video hardware.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
You don't need to have installed any graphics' related things on your
|
||
Linux (like X11 (aka XFree86), fbdev and so on). This driver can be run
|
||
from <emphasis role="bold">text-mode</emphasis>.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
You have chances to get <emphasis role="bold">working TV-out</emphasis>.
|
||
(It's known at least for ATI's cards).
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
This driver calls <function>int 10h</function> handler thus it's not
|
||
an emulator - it calls <emphasis role="bold">real</emphasis> things of
|
||
<emphasis>real</emphasis> BIOS in <emphasis>real-mode</emphasis>.
|
||
(Finely - in vm86 mode).
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
You can use VIDIX with it, thus getting accelerated video display
|
||
<emphasis role="bold">and</emphasis> TV output at the same time!
|
||
(Recommended for ATI cards.)
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
|
||
<itemizedlist spacing="compact">
|
||
<title>DISADVANTAGES</title>
|
||
<listitem><simpara>
|
||
It works only on <emphasis role="bold">x86 systems</emphasis>.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
It can be used only by <systemitem class="username">root</systemitem>.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
Currently it's available only for <emphasis role="bold">Linux</emphasis>.
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
|
||
<important>
|
||
<para>
|
||
Don't use this driver with <emphasis role="bold">GCC 2.96</emphasis>!
|
||
It won't work!
|
||
</para>
|
||
</important>
|
||
|
||
<variablelist>
|
||
<title>COMMAND LINE OPTIONS AVAILABLE FOR VESA</title>
|
||
<varlistentry>
|
||
<term><option>-vo vesa:<replaceable>opts</replaceable></option></term>
|
||
<listitem><simpara>
|
||
currently recognized: <literal>dga</literal> to force dga mode and
|
||
<literal>nodga</literal> to disable dga mode. In dga mode you can enable
|
||
double buffering via the -double option. Note: you may omit these parameters
|
||
to enable <emphasis role="bold">autodetection</emphasis> of dga mode.
|
||
</simpara></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
|
||
<itemizedlist spacing="compact">
|
||
<title>KNOWN PROBLEMS AND WORKAROUNDS</title>
|
||
<listitem><simpara>
|
||
If you have installed <emphasis role="bold">NLS</emphasis> font on your
|
||
Linux box and run VESA driver from text-mode then after terminating
|
||
<application>MPlayer</application> you will have
|
||
<emphasis role="bold">ROM font</emphasis> loaded instead of national.
|
||
You can load national font again by using <command>setsysfont</command>
|
||
utility from the Mandrake distribution for exemple.
|
||
(<emphasis role="bold">Hint</emphasis>: The same utility is used for
|
||
localization of fbdev).
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
Some <emphasis role="bold">Linux graphics drivers</emphasis> don't update
|
||
active <emphasis role="bold">BIOS mode</emphasis> in DOS memory.
|
||
So if you have such problem - always use VESA driver only from
|
||
<emphasis role="bold">text-mode</emphasis>. Otherwise text-mode (#03) will
|
||
be activated anyway and you will need restart your computer.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
Often after terminating VESA driver you get black screen. To return your
|
||
screen to original state - simply switch to other console (by pressing
|
||
<keycap>Alt</keycap>+<keycap>F<x></keycap>)
|
||
then switch to your previous console by the same way.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
To get <emphasis role="bold">working TV-out</emphasis> you need have plugged
|
||
TV-connector in before booting your PC since video BIOS initializes
|
||
itself only once during POST procedure.
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="x11">
|
||
<title>X11</title>
|
||
|
||
<para>
|
||
Avoid if possible. Outputs to X11 (uses shared memory extension), with no
|
||
hardware acceleration at all. Supports (MMX/3DNow/SSE accelerated, but
|
||
still slow) software scaling, use the options <option>-fs -zoom</option>.
|
||
Most cards have hardware scaling support, use the <option>-vo xv</option>
|
||
output for them, or <option>-vo xmga</option> for Matroxes.
|
||
</para>
|
||
|
||
<para>
|
||
The problem is that most cards' driver doesn't support hardware
|
||
acceleration on the second head/TV. In those cases, you see green/blue
|
||
colored window instead of the movie. This is where this driver comes in
|
||
handy, but you need powerful CPU to use software scaling. Don't use the SDL
|
||
driver's software output+scaler, it has worse image quality!
|
||
</para>
|
||
|
||
<para>
|
||
Software scaling is very slow, you better try changing video modes instead.
|
||
It's very simple. See the <link linkend="dga-modelines">DGA section's
|
||
modelines</link>, and insert them into your <filename>XF86Config</filename>.
|
||
|
||
<itemizedlist spacing="compact">
|
||
<listitem><simpara>
|
||
If you have XFree86 4.x.x: use the <option>-vm</option> option. It will
|
||
change to a resolution your movie fits in. If it doesn't:
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
With XFree86 3.x.x: you have to cycle through available resolutions
|
||
with the
|
||
<keycap>Ctrl</keycap>+<keycap>Alt</keycap>+<keycap>plus</keycap>
|
||
and
|
||
<keycap>Ctrl</keycap>+<keycap>Alt</keycap>+<keycap>minus</keycap>
|
||
keys.
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
</para>
|
||
|
||
<para>
|
||
If you can't find the modes you inserted, browse XFree86's output. Some
|
||
drivers can't use low pixelclocks that are needed for low resolution
|
||
video modes.
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="vidix">
|
||
<title>VIDIX</title>
|
||
|
||
<formalpara>
|
||
<title>PREAMBLE</title>
|
||
<para>
|
||
VIDIX is the abbreviation for <emphasis role="bold">VID</emphasis>eo
|
||
<emphasis role="bold">I</emphasis>nterface for *ni<emphasis role="bold">X</emphasis>.
|
||
VIDIX was designed and introduced as an interface for fast user-space drivers
|
||
providing such video performance as mga_vid does for Matrox cards. It's also very
|
||
portable.
|
||
</para>
|
||
</formalpara>
|
||
<para>
|
||
This interface was designed as an attempt to fit existing video
|
||
acceleration interfaces (known as mga_vid, rage128_vid, radeon_vid,
|
||
pm3_vid) into a fixed scheme. It provides highlevel interface to chips
|
||
which are known as BES (BackEnd scalers) or OV (Video Overlays). It doesn't
|
||
provide lowlevel interface to things which are known as graphics servers.
|
||
(I don't want to compete with X11 team in graphics mode switching). I.e.
|
||
main goal of this interface is to maximize the speed of video playback.
|
||
</para>
|
||
|
||
<itemizedlist spacing="compact">
|
||
<title>USAGE</title>
|
||
<listitem><simpara>
|
||
You can use standalone video output driver: <option>-vo xvidix</option>.
|
||
This driver was developed as X11's front end to VIDIX technology. It
|
||
requires X server and can work only under X server.Note that, as it directly
|
||
accesses the hardware and circumvents the X driver, pixmaps cached in the
|
||
graphics card's memory may be corrupted. You can prevent this by limiting
|
||
the amount of video memory used by X with the XF86Config option "VideoRam"
|
||
in the device section. You should set this to the amount of memory installed
|
||
on your card minus 4MB. If you have less than 8MB of video ram, you can use
|
||
the option "XaaNoPixmapCache" in the screen section instead.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
You can use VIDIX subdevice which was applied to several video output
|
||
drivers, such as: <option>-vo vesa:vidix</option>
|
||
(<emphasis role="bold">Linux only</emphasis>) and
|
||
<option>-vo fbdev:vidix</option>.
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
|
||
<para>
|
||
Indeed it doesn't matter which video output driver is used with
|
||
<emphasis role="bold">VIDIX</emphasis>.
|
||
</para>
|
||
|
||
<itemizedlist spacing="compact">
|
||
<title>REQUIREMENTS</title>
|
||
<listitem><simpara>
|
||
Video card should be in graphics mode (I write <emphasis role="bold">should</emphasis>
|
||
simply because I tested it in text mode - it works but has awful output ;) Use
|
||
AAlib for that).
|
||
<emphasis role="bold">Note</emphasis>: Everyone can try this trick by commenting out mode
|
||
switching in vo_vesa driver.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
<application>MPlayer</application>'s video output driver should know
|
||
active video mode and be able to tell to VIDIX subdevice some video
|
||
characteristics of server.
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
|
||
<formalpara>
|
||
<title>USAGE METHODS</title>
|
||
<para>
|
||
When VIDIX is used as <emphasis>subdevice</emphasis> (<option>-vo
|
||
vesa:vidix</option>) then video mode configuration is performed by video
|
||
output device (<emphasis>vo_server</emphasis> in short). Therefore you can
|
||
pass into command line of <application>MPlayer</application> the same keys
|
||
as for vo_server. In addition it understands <option>-double</option> key
|
||
as globally visible parameter. (I recommend using this key with VIDIX at
|
||
least for ATI's card). As for <option>-vo xvidix</option> : currently it
|
||
recognizes the following options: <option>-fs -zoom -x -y -double</option>.
|
||
</para>
|
||
</formalpara>
|
||
<para>
|
||
Also you can specify VIDIX's driver directly as third subargument in
|
||
command line:
|
||
|
||
<screen>mplayer -vo xvidix:mga_vid.so -fs -zoom -double file.avi</screen>
|
||
or
|
||
<screen>mplayer -vo vesa:vidix:radeon_vid.so -fs -zoom -double -bpp 32 file.avi</screen>
|
||
|
||
But it's dangerous, and you shouldn't do that. In this case given driver
|
||
will be forced and result is unpredictable (it may
|
||
<emphasis role="bold">freeze</emphasis> your computer). You should do that
|
||
ONLY if you are absolutely sure it will work, and
|
||
<application>MPlayer</application> doesn't do it automatically. Please tell
|
||
about it to the developers. The right way is to use VIDIX without arguments
|
||
to enable driver autodetection.
|
||
</para>
|
||
|
||
<para>
|
||
VIDIX is new technology and it's extremely possible that on your
|
||
system it won't work. In this case only solution for you
|
||
it's port it (mainly libdha). But there is hope that it will work on those
|
||
systems where X11 does.
|
||
</para>
|
||
|
||
<para>
|
||
Since VIDIX requires direct hardware access you can either run it as root
|
||
or set the SUID bit on the <application>MPlayer</application> binary
|
||
(<emphasis role="bold">Warning: This is a security risk!</emphasis>
|
||
Alternatively, you can use a special kernel module, like this:
|
||
</para>
|
||
|
||
<procedure>
|
||
<step><para>
|
||
Download the <ulink url="http://www.arava.co.il/matan/svgalib/">development version</ulink>
|
||
of svgalib (for example 1.9.17), <emphasis role="bold">OR</emphasis>
|
||
download a version made by Alex especially for usage with <application>MPlayer</application>
|
||
(it doesn't need the svgalib source to compile) from
|
||
<ulink url="http://www.mplayerhq.hu/~alex/svgalib_helper-1.9.17-mplayer.tar.bz2">here</ulink>.
|
||
</para></step>
|
||
<step><para>
|
||
Compile the module in the <filename class="directory">svgalib_helper</filename>
|
||
directory if you've downloaded the source from the svgalib site) and insmod it.
|
||
</para></step>
|
||
<step><para>
|
||
Move the <filename class="directory">svgalib_helper</filename> directory to
|
||
<filename class="directory">mplayer/main/libdha/svgalib_helper</filename>.
|
||
</para></step>
|
||
<step><para>
|
||
Required if you download the source from the svgalib site: Remove the comment before the
|
||
CFLAGS line containing "svgalib_helper" string from the
|
||
<filename class="directory">libdha/Makefile</filename>.
|
||
</para></step>
|
||
<step><para>
|
||
Recompile and install libdha.
|
||
</para></step>
|
||
</procedure>
|
||
|
||
<sect5 id="vidix-ati">
|
||
<title>ATI cards</title>
|
||
<para>
|
||
Currently most ATI cards are supported natively, from Mach64 to the
|
||
newest Radeons.
|
||
</para>
|
||
|
||
<para>
|
||
There are two compiled binaries: <filename>radeon_vid</filename> for Radeon and
|
||
<filename>rage128_vid</filename> for Rage 128 cards. You may force one or let
|
||
the VIDIX system autoprobe all available drivers.
|
||
</para>
|
||
</sect5>
|
||
|
||
<sect5 id="vidix-mga">
|
||
<title>Matrox cards</title>
|
||
<para>
|
||
Matrox G200,G400,G450 and G550 have been reported to work.
|
||
</para>
|
||
|
||
<para>
|
||
The driver supports video equalizers and should be nearly as fast as the
|
||
<link linkend="mga_vid">Matrox framebuffer</link>
|
||
</para>
|
||
</sect5>
|
||
|
||
<sect5 id="vidix-trident">
|
||
<title>Trident cards</title>
|
||
<para>
|
||
There is a driver available for the Trident Cyberblade/i1 chipset, which
|
||
can be found on VIA Epia motherboards.
|
||
</para>
|
||
|
||
<para>
|
||
The driver was written and is maintained by Alastair M. Robinson, who
|
||
offers the very latest driver versions for download from his
|
||
<ulink url="http://www.blackfiveservices.co.uk/EPIAVidix.shtml">homepage</ulink>.
|
||
The drivers are added to MPlayer with only a short delay, so CVS should always
|
||
be up to date.
|
||
</para>
|
||
</sect5>
|
||
|
||
<sect5 id="vidix-3dlabs">
|
||
<title>3DLabs cards</title>
|
||
<para>
|
||
Although there is a driver for the 3DLabs GLINT R3 and Permedia3 chips, no one
|
||
has tested it, so reports are welcome.
|
||
</para>
|
||
</sect5>
|
||
</sect4>
|
||
|
||
<sect4 id="directfb">
|
||
<title>DirectFB</title>
|
||
<blockquote><para>
|
||
"DirectFB is a graphics library which was designed with embedded systems
|
||
in mind. It offers maximum hardware accelerated performance at a minimum
|
||
of resource usage and overhead." - quoted from <ulink url="http://www.directfb.org"/>
|
||
</para></blockquote>
|
||
|
||
<para>I'll exclude DirectFB features from this section.</para>
|
||
|
||
<para>
|
||
Though MPlayer is not supported as a "video provider" in DirectFB, this
|
||
output driver will enable video playback through DirectFB. It will - of course -
|
||
be accelerated, on my Matrox G400 DirectFB's speed was the same as XVideo.
|
||
</para>
|
||
|
||
<para>
|
||
Always try to use the newest version of DirectFB. You can use DirectFB options on
|
||
the command line, using the <option>-dfbopts</option> option. Layer selection can
|
||
be done by the subdevice method, e.g.: <option>-vo directfb:2</option>
|
||
(layer -1 is default: autodetect)
|
||
</para>
|
||
</sect4>
|
||
|
||
<sect4 id="dfbmga">
|
||
<title>DirectFB/Matrox (dfbmga)</title>
|
||
<para>
|
||
Please read the <link linkend="directfb">main DirectFB section</link> or general
|
||
informations.
|
||
</para>
|
||
|
||
<para>This video output driver will enable CRTC2 (on the second head) on the
|
||
Matrox G400/G450/G550 card, displaying video <emphasis role="bold">independently</emphasis>
|
||
of the first head.
|
||
</para>
|
||
|
||
<para>
|
||
Instructions on how to make it work can be found in the
|
||
<ulink url="../../tech/directfb.txt">tech section</ulink>
|
||
or directly on Ville Syrjala's
|
||
<ulink url="http://www.sci.fi/~syrjala/directfb/Matrox_TV-out_README.txt">home page</ulink>.
|
||
</para>
|
||
|
||
<note><para>
|
||
we haven't been able to make this work, but others did. Anyway, porting of
|
||
the CRTC2 code to <emphasis role="bold">mga_vid</emphasis> is underway.
|
||
</para></note>
|
||
</sect4>
|
||
</sect3>
|
||
|
||
<sect3 id="mpeg_decoders">
|
||
<title>MPEG decoders</title>
|
||
|
||
<sect4 id="dvb">
|
||
<title>DVB</title>
|
||
<para>
|
||
<application>MPlayer</application> supports cards with the Siemens DVB chipset
|
||
from vendors like Siemens, Technotrend, Galaxis or Hauppauge. The latest DVB
|
||
drivers are available from the <ulink url="http://www.linuxtv.org">Linux TV site</ulink>.
|
||
If you want to do software transcoding you should have at least a 1GHz CPU.
|
||
</para>
|
||
|
||
<para>
|
||
Configure should detect your DVB card. If it did not, force detection with
|
||
</para>
|
||
|
||
<para><screen>./configure --enable-dvb</screen></para>
|
||
|
||
<para>If you have ost headers at a non-standard path, set the path with</para>
|
||
|
||
<para><screen>./configure --with-extraincdir=<DVB source directory>/ost/include
|
||
</screen></para>
|
||
|
||
<para>Then compile and install as usual.</para>
|
||
|
||
<formalpara>
|
||
<title>USAGE</title>
|
||
<para>
|
||
Hardware decoding (playing standard MPEG1/2 files) can be done with this command:
|
||
</para>
|
||
</formalpara>
|
||
<para><screen>mplayer -ao mpegpes -vo mpegpes file.mpg|vob</screen></para>
|
||
|
||
<para>
|
||
Software decoding or transcoding different formats to MPEG1 can be achieved using
|
||
a command like this:
|
||
</para>
|
||
<para><screen>
|
||
mplayer -ao mpegpes -vo mpegpes yourfile.ext
|
||
mplayer -ao mpegpes -vo mpegpes -vf expand yourfile.ext
|
||
</screen></para>
|
||
|
||
<para>
|
||
Note that DVB cards only support heights 288 and 576 for PAL or 240 and 480 for
|
||
NTSC. You <emphasis role="bold">must</emphasis> escale for other heights by adding
|
||
<option>scale=width:height</option> with the width and height you want to the
|
||
<option>-vf</option> option. DVB cards accept various widths, like 720, 704,
|
||
640, 512, 480, 352 etc and do hardware scaling in horizontal direction, so you
|
||
do not need to scale horizontally in most cases. For a 512x384 (aspect 4:3)
|
||
DivX try:
|
||
</para>
|
||
|
||
<para><screen>mplayer -ao mpegpes -vo mpegpes -vf scale=512:576</screen></para>
|
||
|
||
<para>If you have a widescreen movie and you do not want to scale it to full height,
|
||
you can use the <option>expand=w:h</option> filter to add black bands. To view a
|
||
640x384 DivX, try:
|
||
</para>
|
||
|
||
<para><screen>mplayer -ao mpegpes -vo mpegpes -vf expand=640:576 file.avi
|
||
</screen></para>
|
||
|
||
<para>If your CPU is too slow for a full size 720x576 DivX, try downscaling:</para>
|
||
|
||
<para><screen>mplayer -ao mpegpes -vo mpegpes -vf scale=352:576 file.avi
|
||
</screen></para>
|
||
|
||
<para>If speed does not improve, try vertical downscaling, too:</para>
|
||
|
||
<para><screen>mplayer -ao mpegpes -vo mpegpes -vf scale=352:288 file.avi
|
||
</screen></para>
|
||
|
||
<para>
|
||
For OSD and subtitles use the OSD feature of the expand filter. So, instead of
|
||
<option>expand=w:h</option> or <option>expand=w:h:x:y</option>, use
|
||
<option>expand=w:h:x:y:1</option> (the 5th parameter <option>:1</option>
|
||
at the end will enable OSD rendering). You may want to move the image up a bit
|
||
to get a bigger black zone for subtitles. You may also want to move subtitles up,
|
||
if they are outside your TV screen, use the <option>-subpos <0-100></option>
|
||
option to adjust this (<option>-subpos 80</option> is a good choice).
|
||
</para>
|
||
|
||
<para>
|
||
In order to play non-25fps movies on a PAL TV or with a slow CPU, add the
|
||
<option>-framedrop</option> option.
|
||
</para>
|
||
|
||
<para>
|
||
To keep the aspect ratio of DivX files and get the optimal scaling
|
||
parameters (hardware horizontal scaling and software vertical scaling
|
||
while keeping the right aspect ratio), use the new dvbscale filter:
|
||
</para>
|
||
|
||
<para><screen>
|
||
for 3:4 TV: -vf dvbscale,scale=-1:0,expand=-1:576:-1:-1:1
|
||
for 16:9 TV: -vf dvbscale=1024,scale=-1:0,expand=-1:576:-1:-1:1
|
||
</screen></para>
|
||
|
||
<formalpara>
|
||
<title>FUTURE</title>
|
||
<para>
|
||
If you have questions or want to hear feature announcements and take part in
|
||
discussions on this subject, join our
|
||
<ulink url="http://mplayerhq.hu/mailman/listinfo/mplayer-dvb">MPlayer-DVB</ulink>
|
||
mailing list. Please remember that the list language is English.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<para>
|
||
In the future you may expect the ability to display OSD and subtitles using
|
||
the native OSD feature of DVB cards, as well as more fluent playback of
|
||
non-25fps movies and realtime transcoding between MPEG2 and MPEG4 (partial
|
||
decompression).
|
||
</para>
|
||
</sect4>
|
||
|
||
<sect4 id="dxr2">
|
||
<title>DXR2</title>
|
||
<para>MPlayer supports hardware accelerated playback with the Creative DXR2 card.</para>
|
||
<para>
|
||
First of all you will need properly installed DXR2 drivers. You can find
|
||
the drivers and installation instructions at the
|
||
<ulink url="http://dxr2.sourceforge.net/">DXR2 Resource Center</ulink> site.
|
||
</para>
|
||
|
||
<variablelist>
|
||
<title>USAGE</title>
|
||
<varlistentry>
|
||
<term><option>-vo dxr2</option></term>
|
||
<listitem><para>enable TV output</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-vo dxr2:x11</option> or <option>-vo dxr2:xv</option></term>
|
||
<listitem><para>enable Overlay output in X11</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-dxr2 <option1:option2:...></option></term>
|
||
<listitem><para>This option is used to control the DXR2 driver.</para></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
|
||
<para>
|
||
The overlay chipset used on the DXR2 is of pretty bad quality but the
|
||
default settings should work for everybody. The OSD may be usable with the
|
||
overlay (not on TV) by drawing it in the colorkey. With the default colorkey
|
||
settings you may get variable results, usually you will see the colorkey
|
||
around the characters or some other funny effect. But if you properly adjust
|
||
the colorkey settings you should be able to get acceptable results.
|
||
</para>
|
||
|
||
<para>Please see the manpage for available options.</para>
|
||
</sect4>
|
||
|
||
<sect4 id="dxr3">
|
||
<title>DXR3/Hollywood+</title>
|
||
<para>
|
||
<application>MPlayer</application> supports hardware accelerated playback
|
||
with the Creative DXR3 and Sigma Designs Hollywood Plus cards. These cards
|
||
both use the em8300 MPEG decoder chip from Sigma Designs.
|
||
</para>
|
||
|
||
<para>
|
||
First of all you will need properly installed DXR3/H+ drivers, version 0.12.0
|
||
or later. You can find the drivers and installation instructions at the
|
||
<ulink url="http://dxr3.sourceforge.net/">DXR3 & Hollywood Plus for Linux</ulink>
|
||
site. Configure should detect your card automatically, compilation should go
|
||
without problems.
|
||
</para>
|
||
|
||
<!-- FIXME: find a more clear presentation -->
|
||
<variablelist>
|
||
<title>USAGE</title>
|
||
<varlistentry>
|
||
<term><option>-vo dxr3:prebuf:sync:norm=x:<device></option></term>
|
||
<listitem><para>
|
||
<option>overlay</option> activates the overlay instead of TVOut. It requires
|
||
that you have a properly configured overlay setup to work right. The easiest
|
||
way to configure the overlay is to first run autocal. Then run mplayer with
|
||
dxr3 output and without overlay turned on, run dxr3view. In dxr3view you can
|
||
tweak the overlay settings and see the effects in realtime, perhaps this feature
|
||
will be supported by the MPlayer GUI in the future. When overlay is properly set
|
||
up you will no longer need to use dxr3view.
|
||
<option>prebuf</option> turns on prebuffering. Prebuffering is a feature of the
|
||
em8300 chip that enables it to hold more than one frame of video at a time. This
|
||
means that when you are running with prebuffering MPlayer will try to keep the
|
||
video buffer filled with data at all times. If you are on a slow machine MPlayer
|
||
will probably use close to, or precisely 100% of CPU. This is especially common
|
||
if you play pure MPEG streams (like DVDs, SVCDs a.s.o.) since MPlayer will not
|
||
have to reencode it to MPEG it will fill the buffer very fast.
|
||
With prebuffering video playback is <emphasis role="bold">much</emphasis>
|
||
less sensitive to other programs hogging the CPU, it will not drop frames unless
|
||
applications hog the CPU for a long time.
|
||
When running without prebuffering the em8300 is much more sensitive to CPU load,
|
||
so it is highly suggested that you turn on MPlayer's <option>-framedrop</option>
|
||
option to avoid further loss of sync.
|
||
<option>sync</option> will turn on the new sync-engine. This is currently an
|
||
experimental feature. With the sync feature turned on the em8300's internal clock
|
||
will be monitored at all times, if it starts to deviate from MPlayer's clock it
|
||
will be reset causing the em8300 to drop any frames that are lagging behind.
|
||
<option>norm=x</option> will set the TV norm of the DXR3 card without the need
|
||
for external tools like em8300setup. Valid norms are 5 = NTSC, 4 = PAL-60,
|
||
3 = PAL. Special norms are 2 (auto-adjust using PAL/PAL-60) and 1 (auto-adjust
|
||
using PAL/NTSC) because they decide which norm to use by looking at the frame
|
||
rate of the movie. norm = 0 (default) does not change the current norm.
|
||
<option><device></option> = device number to use if you have more than one em8300
|
||
card.
|
||
Any of these options may be left out.
|
||
<option>:prebuf:sync</option> seems to work great when playing DivX movies. People
|
||
have reported problems using the prebuf option when playing MPEG1/2 files. You
|
||
might want to try running without any options first, if you have sync problems,
|
||
or DVD subtitle problems, give <option>:sync</option> a try.
|
||
</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-ao oss:/dev/em8300_ma-<replaceable>X</replaceable></option></term>
|
||
<listitem><para>
|
||
For audio output, where <replaceable>X</replaceable> is the device number (0 if one card).
|
||
</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-aop list=resample:fout=<replaceable>xxxxx</replaceable></option></term>
|
||
<listitem><para>
|
||
The em8300 cannot play back samplerates lower than 44100Hz. If the sample
|
||
rate is below 44100Hz select either 44100Hz or 48000Hz depending on which
|
||
one matches closest. I.e. if the movie uses 22050Hz use 44100Hz as
|
||
44100 / 2 = 22050, if it is 24000Hz use 48000Hz as 48000 / 2 = 24000 and so on.
|
||
This does not work with digital audio output (<option>-ac hwac3</option>).
|
||
</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-vf lavc/fame</option></term>
|
||
<listitem><para>
|
||
To watch non-MPEG content on the em8300 (i.e. DivX or RealVideo) you have to
|
||
specify an MPEG1 video filter such as libavcodec (lavc) or libfame (fame). At
|
||
the moment lavc is both faster and gives better image quality, it is suggested
|
||
that you use that unless you have problems with it. See the man page for further
|
||
info about <option>-vf lavc/fame</option>.
|
||
Using lavc is highly recommended. Currently there is no way of setting the fps
|
||
of the em8300 which means that it is fixed to 29.97fps. Because of this it is
|
||
highly recommended that you use <option>-vf lavc=<quality>:25</option>
|
||
especially if you are using prebuffering. Then why 25 and not 29.97? Well, the
|
||
thing is that when you use 29.97 the picture becomes a bit jumpy. The reason for
|
||
this is unknown to us. If you set it to somewhere between 25 and 27 the picture
|
||
becomes stable. For now all we can do is accept this for a fact.
|
||
</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-vf expand=-1:-1:-1:-1:1</option></term>
|
||
<listitem><para>
|
||
Although the DXR3 driver can put some OSD onto the MPEG1/2/4 video, it has
|
||
much lower quality than MPlayer's traditional OSD, and has several refresh
|
||
problems as well. The command line above will firstly convert the input
|
||
video to MPEG4 (this is mandatory, sorry), then apply an expand filter which
|
||
won't expand anything (-1: default), but apply the normal OSD onto the picture
|
||
(that's what the "1" at the end does).
|
||
</para></listitem>
|
||
</varlistentry>
|
||
|
||
<varlistentry>
|
||
<term><option>-ac hwac3</option></term>
|
||
<listitem><para>
|
||
The em8300 supports playing back AC3 audio (surround sound) through the
|
||
digital audio output of the card. See the <option>-ao oss</option> option above,
|
||
it must be used to specify the DXR3's output instead of a soundcard.
|
||
</para></listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
</sect4>
|
||
|
||
</sect3>
|
||
|
||
<sect3 id="other">
|
||
<title>Other visualization hardware</title>
|
||
|
||
<sect4 id="zr">
|
||
<title>Zr</title>
|
||
|
||
<para>
|
||
This is a display-driver (<option>-vo zr</option>) for a number of MJPEG
|
||
capture/playback cards (tested for DC10+ and Buz, and it should work for the
|
||
LML33, the DC10). The driver works by encoding the frame to JPEG and then
|
||
sending it to the card. For the JPEG encoding <systemitem>libavcodec</systemitem>
|
||
is used, and required. With the special <emphasis>cinerama</emphasis> mode,
|
||
you can watch movies in true wide screen provided that you have two beamers
|
||
and two MJPEG cards. Depending on resolution and quality settings, this driver
|
||
may require a lot of CPU power, remember to specify <option>-framedrop</option>
|
||
if your machine is too slow. Note: My AMD K6-2 350MHz is (with
|
||
<option>-framedrop</option>) quite adequate for watching VCD sized material and
|
||
downscaled movies.
|
||
</para>
|
||
|
||
<para>
|
||
This driver talks to the kernel driver available at
|
||
<ulink url="http://mjpeg.sourceforge.net"/>, so
|
||
you must get it working first. The presence of an MJPEG card is autodetected by the
|
||
<filename>configure</filename> script, if autodetection fails, force detection with
|
||
<screen>./configure --enable-zr</screen>
|
||
</para>
|
||
<para>
|
||
The output can be controlled by several options, a long description of the
|
||
options can be found in the man page, a short list of options can be viewed
|
||
by running
|
||
<screen>mplayer -zrhelp</screen>
|
||
</para>
|
||
|
||
<para>
|
||
Things like scaling and the OSD (on screen display) are not handled by
|
||
this driver but can be done using the video filters. For example, suppose
|
||
that you have a movie with a resolution of 512x272 and you want to view it
|
||
fullscreen on your DC10+. There are three main possibilities, you may scale
|
||
the movie to a width of 768, 384 or 192. For performance and quality reasons,
|
||
I would choose to scale the movie to 384x204 using the fast bilinear software
|
||
scaler. The commandline is
|
||
<screen>mplayer -vo zr -sws 0 -vf scale=384:204 movie.avi</screen>
|
||
</para>
|
||
|
||
<para>
|
||
Cropping can be done by the <systemitem>crop</systemitem> filter and by this
|
||
driver itself. Suppose that a movie is too wide for display on your Buz and
|
||
that you want to use <option>-zrcrop</option> to make the movie less wide,
|
||
the you would issue the following command
|
||
<screen>mplayer -vo zr -zrcrop 720x320+80+0 benhur.avi</screen>
|
||
</para>
|
||
|
||
<para>
|
||
if you want to use the <systemitem>crop</systemitem> filter, you would do
|
||
<screen>mplayer -vo zr -vf crop=720:320:80:0 benhur.avi</screen>
|
||
</para>
|
||
|
||
<para>
|
||
Extra occurances of <option>-zrcrop</option> invoke <emphasis>cinerama</emphasis>
|
||
ode, i.e. you can distribute the movie over several TV's or beamers to create a
|
||
larger screen. Suppose you have two beamers. The left one is connected to your
|
||
Buz at <systemitem>/dev/video1</systemitem> and the right one is connected to
|
||
your DC10+ at <systemitem>/dev/video0</systemitem>. The movie has a resolution
|
||
of 704x288. Suppose also that you want the right beamer in black and white and
|
||
that the right beamer should have jpeg frames at quality 10, then you would
|
||
issue the following command
|
||
<screen>
|
||
mplayer -vo zr -zrdev /dev/video0 -zrcrop 352x288+352+0 -zrxdoff 0 -zrbw \
|
||
-zrcrop 352x288+0+0 -zrdev /dev/video1 -zrquality 10 movie.avi
|
||
</screen>
|
||
</para>
|
||
|
||
<para>
|
||
You see that the options appearing before the second <option>-zrcrop</option>
|
||
only apply to the DC10+ and that the options after the second
|
||
<option>-zrcrop</option> apply to the Buz. The maximum number of MJPEG cards
|
||
participating in <emphasis>cinerama</emphasis> is four, so you can buid a
|
||
2x2 vidiwall.
|
||
</para>
|
||
|
||
<para>
|
||
inally an important remark: Do not start or stop XawTV on the playback device
|
||
during playback, it will crash your computer. It is, however, fine to
|
||
<emphasis role="bold">FIRST</emphasis> start XawTV, <emphasis role="bold">THEN</emphasis>
|
||
start MPlayer, wait for MPlayer to finish and <emphasis role="bold">THEN</emphasis>
|
||
stop XawTV.
|
||
</para>
|
||
</sect4>
|
||
|
||
<sect4 id="blinkenlights">
|
||
<title>Blinkenlights</title>
|
||
<para>
|
||
This driver is capable of playback using the Blinkenlights UDP protocol. If you
|
||
don't know what <ulink url="http://www.blinkenlights.de/">Blinkenlights</ulink>
|
||
is, you don't need this driver.
|
||
</para>
|
||
</sect4>
|
||
</sect3>
|
||
|
||
<sect3 id="tvout">
|
||
<title>TV-out support</title>
|
||
|
||
<sect4 id="tvout-mga-g400">
|
||
<title>Matrox G400 cards</title>
|
||
|
||
<para>
|
||
Under Linux you have two methods to get G400 TV out working:
|
||
</para>
|
||
|
||
<important>
|
||
<para>
|
||
for Matrox G450/G550 TV-out instructions, please see the next section!
|
||
</para>
|
||
</important>
|
||
|
||
<variablelist>
|
||
<varlistentry>
|
||
<term>XFree86</term>
|
||
<listitem><para>
|
||
Using the driver and the HAL module, available from <ulink
|
||
url="http://www.matrox.com">Matrox's site</ulink>. This will give you X
|
||
on the TV.
|
||
</para><para>
|
||
<emphasis role="bold">This method doesn't give you accelerated playback</emphasis>
|
||
as under Windows! The second head has only YUV framebuffer, the <emphasis>BES</emphasis>
|
||
(Back End Scaler, the YUV scaler on G200/G400/G450/G550 cards) doesn't
|
||
work on it! The windows driver somehow workarounds this, probably by
|
||
using the 3D engine to zoom, and the YUV framebuffer to display the
|
||
zoomed image. If you really want to use X, use the <option>-vo x11 -fs
|
||
-zoom</option> options, but it will be <emphasis role="bold">SLOW</emphasis>,
|
||
and has <emphasis role="bold">Macrovision</emphasis> copy protection enabled
|
||
(you can "workaround" Macrovision using this
|
||
<ulink url="http://avifile.sourceforge.net/mgamacro.pl">perl
|
||
script</ulink>.
|
||
</para></listitem>
|
||
</varlistentry>
|
||
<varlistentry>
|
||
<term>Framebuffer</term>
|
||
<listitem><para>
|
||
Using the <emphasis role="bold">matroxfb modules</emphasis> in the 2.4
|
||
kernels. 2.2 kernels don't have the TVout feature in them, thus unusable
|
||
for this. You have to enable ALL matroxfb-specific feature during compilation
|
||
(except MultiHead), and compile them into <emphasis role="bold">modules!</emphasis>
|
||
You'll also need I2C enabled.
|
||
</para>
|
||
|
||
<procedure>
|
||
<step><para>
|
||
Enter <filename class="directory">TVout/matroxset</filename> and type
|
||
<command>make</command>. Install <filename class="directory">matroxset</filename> into
|
||
somewhere in your <envar>PATH</envar>.
|
||
</para></step>
|
||
<step><para>
|
||
If you don't have <command>fbset</command> installed, enter
|
||
<filename class="directory">TVout/fbset</filename> and type <command>make</command>.
|
||
Install <filename class="directory">fbset</filename> into somewhere in your
|
||
<envar>PATH</envar>.
|
||
</para></step>
|
||
<step><para>
|
||
Then enter into the <filename class="directory">TVout/</filename> directory
|
||
in the <application>MPlayer</application> source, and execute
|
||
<filename>./modules</filename> as root. Your text-mode console will
|
||
enter into framebuffer mode (no way back!).
|
||
</para></step>
|
||
<step><para>
|
||
Next, EDIT and run the <filename>./matroxtv</filename> script. This will
|
||
present you to a very simple menu. Press <keycap>2</keycap> and
|
||
<keycap>Enter</keycap>. Now you should have the same picture on your
|
||
monitor, and TV. The 3rd option will turn on independent display, but
|
||
then you <emphasis>can't use X!</emphasis> If the TV (PAL by default)
|
||
picture has some weird stripes on it, the script wasn't able to set the
|
||
resolution correctly (to 640x512 by default). Try other resolutions
|
||
from the menu and/or experiment with fbset.
|
||
</para></step>
|
||
<step><para>
|
||
Yoh. Next task is to make the cursor on tty1 (or whatever) to
|
||
disappear, and turn off screen blanking. Execute the following
|
||
commands:
|
||
|
||
<screen>
|
||
echo -e '\033[?25l'
|
||
setterm -blank 0<!--
|
||
--></screen>
|
||
or
|
||
<screen>
|
||
setterm -cursor off
|
||
setterm -blank 0<!--
|
||
--></screen>
|
||
|
||
You possibly want to put the above into a script, and also clear the
|
||
screen. To turn the cursor back:
|
||
<screen>echo -e '\033[?25h'</screen> or
|
||
<screen>setterm -cursor on</screen>
|
||
</para></step>
|
||
<step><para>
|
||
Yeah kewl. Start movie playing with
|
||
<screen>
|
||
mplayer -vo mga -fs -screenw 640 -screenh 512 <replaceable>filename</replaceable><!--
|
||
--></screen>
|
||
|
||
(If you use X, now change to matroxfb with for example
|
||
<keycap>Ctrl</keycap>+<keycap>Alt</keycap>+<keycap>F1</keycap>.)
|
||
Change <literal>640</literal> and <literal>512</literal> if you set
|
||
the resolution to other...
|
||
</para></step>
|
||
<step><para>
|
||
<emphasis role="bold">Enjoy the ultra-fast ultra-featured Matrox TV
|
||
output (better than Xv)!</emphasis>
|
||
</para></step>
|
||
</procedure>
|
||
</listitem>
|
||
</varlistentry>
|
||
</variablelist>
|
||
|
||
<formalpara>
|
||
<title>Building a Matrox TV-out cable</title>
|
||
<para>
|
||
No one takes any responsibility, nor guarantee for any damage caused
|
||
by this documentation.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<formalpara>
|
||
<title>Cable for G400</title>
|
||
<para>
|
||
The CRTC2 connector's fourth pin is the composite video signal. The
|
||
ground are the sixth, seventh and eighth pins. (info contributed
|
||
from Bal<61>zs R<>cz)
|
||
</para>
|
||
</formalpara>
|
||
|
||
<formalpara>
|
||
<title>Cable for G450</title>
|
||
<para>
|
||
The CRTC2 connector's first pin is the composite video signal. The
|
||
ground are the fifth, sixth, seventh, and fifteenth (5, 6, 7, 15)
|
||
pins. (info contributed from Bal<61>zs Kerekes)
|
||
</para>
|
||
</formalpara>
|
||
</sect4>
|
||
|
||
<sect4 id="tv-out_matrox_g450">
|
||
<title>Matrox G450/G550 cards</title>
|
||
<para>
|
||
TV output support for these cards has only been recently introduced, and is
|
||
not yet in the mainstream kernel. Currently the <emphasis role="bold">mga_vid</emphasis>
|
||
module can't be used AFAIK, because the G450/G550 driver works only in one
|
||
configuration: the first CRTC chip (with much more features) on the first display
|
||
(on monitor), and the second CRTC (no <emphasis role="bold">BES</emphasis> - for
|
||
explanation on BES, please see the G400 section above) on TV. So you can only
|
||
use <application>MPlayer</application>'s <emphasis>fbdev</emphasis> output driver
|
||
at the present.
|
||
</para>
|
||
|
||
<para>
|
||
The first CRTC can't be routed to the second head currently. The author of the
|
||
kernel matroxfb driver - Petr Vandrovec - will maybe make support for this, by
|
||
displaying the first CRTC's output onto both of the heads at once, as currently
|
||
recommended for G400, see the section above.
|
||
</para>
|
||
|
||
<para>
|
||
The necessary kernel patch and the detailed howto is downloadable from
|
||
<ulink url="http://www3.sympatico.ca/dan.eriksen/matrox_tvout/"/>
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="tvout-ati">
|
||
<title>ATI cards</title>
|
||
|
||
<formalpara>
|
||
<title>PREAMBLE</title>
|
||
<para>
|
||
Currently ATI doesn't want to support any of its TV-out chips under Linux,
|
||
because of their licensed Macrovision technology.
|
||
</para>
|
||
</formalpara>
|
||
|
||
<itemizedlist>
|
||
<title>ATI CARDS TV-OUT STATUS ON LINUX</title>
|
||
<listitem><simpara>
|
||
<emphasis role="bold">ATI Mach64</emphasis>:
|
||
supported by <ulink url="http://gatos.sf.net">gatos</ulink>.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
<emphasis role="bold">ASIC Radeon VIVO</emphasis>:
|
||
supported by <ulink url="http://gatos.sf.net">gatos</ulink>.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
<emphasis role="bold">Radeon</emphasis> and <emphasis role="bold">Rage128</emphasis>:
|
||
supported by <application>MPlayer</application>!
|
||
Check <link linkend="vesa">VESA driver</link> and
|
||
<link linkend="vidix">VIDIX</link> sections.
|
||
</simpara></listitem>
|
||
<listitem><simpara>
|
||
<emphasis role="bold">Rage Mobility P/M, Radeon, Rage 128, Mobility M3/M4</emphasis>:
|
||
supported by <ulink url="http://www.stud.uni-hamburg.de/users/lennart/projects/atitvout/">atitvout</ulink>.
|
||
</simpara></listitem>
|
||
</itemizedlist>
|
||
|
||
<para>
|
||
On other cards, just use the <link linkend="vesa">VESA</link> driver,
|
||
without VIDIX. Powerful CPU is needed, though.
|
||
</para>
|
||
|
||
<para>
|
||
Only thing you need to do - <emphasis role="bold">Have the TV connector
|
||
plugged in before booting your PC</emphasis> since video BIOS initializes
|
||
itself only once during POST procedure.
|
||
</para>
|
||
</sect4>
|
||
|
||
|
||
<sect4 id="tvout-voodoo">
|
||
<title>Voodoo 3</title>
|
||
<para>
|
||
Check <ulink url="http://www.iki.fi/too/tvout-voodoo3-3000-xfree">this URL</ulink>.
|
||
</para>
|
||
</sect4>
|
||
|
||
<sect4 id="tvout-nvidia">
|
||
<title>Voodoo 3</title>
|
||
<para>
|
||
First, you MUST download the closed-source drivers from <ulink url="http://nvidia.com"/>.
|
||
I will not describe the installation and configuration process because it does not cover
|
||
the scope of this documentation.
|
||
</para>
|
||
|
||
<para>
|
||
After XFree86, XVideo, and 3D acceleration is properly working, edit your
|
||
card's Device section in the <filename>XF86Config</filename> file, according
|
||
to the following example (adapt for your card/TV):
|
||
|
||
<programlisting>
|
||
Section "Device"
|
||
Identifier "GeForce"
|
||
VendorName "ASUS"
|
||
BoardName "nVidia GeForce2/MX 400"
|
||
Driver "nvidia"
|
||
#Option "NvAGP" "1"
|
||
Option "NoLogo"
|
||
Option "CursorShadow" "on"
|
||
|
||
Option "TwinView"
|
||
Option "TwinViewOrientation" "Clone"
|
||
Option "MetaModes" "1024x768,640x480"
|
||
Option "ConnectedMonitor" "CRT, TV"
|
||
Option "TVStandard" "PAL-B"
|
||
Option "TVOutFormat" "Composite"
|
||
|
||
EndSection
|
||
</programlisting>
|
||
</para>
|
||
|
||
<para>
|
||
Of course the important thing is the TwinView part.
|
||
</para>
|
||
</sect4>
|
||
</sect3>
|
||
</sect2>
|