mirror of
https://github.com/mpv-player/mpv
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c47d912821
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@275 b3059339-0415-0410-9bf9-f77b7e298cf2
141 lines
5.1 KiB
Plaintext
141 lines
5.1 KiB
Plaintext
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Videocards with hardware acceleration:
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* read DOCS/MTRR too!
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"Hardware acceleration" usually means hardware YUV conversion, scaling,
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bilinear filtering. Under Linux, there are several ways to access it:
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I. The Xv (XVideo) extension of XFree86 4.0.2
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II. OpenGL drivers with glTexSubImage() support (currently the Utah-GLX
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drivers)
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III. Native card-specific drivers, using special abilities of some cards
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IV. DGA - direct graphic access. no YUV & scaling, but faster than raw X11
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Now, let's see them in details:
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I. Under XFree86 4.0.2 or newer, using the XVideo extension:
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this is what the option '-vo xv' uses.
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In order to make this work, be sure to check the following:
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1. You use XFree86 4.0.2 or newer (former versions don't have XVideo)
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2. Your card actually supports harware acceleration (modern cards do)
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3. X loads the XVideo extension, it's something like this:
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(II) Loading extension XVideo
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in /var/log/XFree86.0.log
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NOTE : 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 _card's_ XVideo support is
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loaded!
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4. Your card has Xv support under Linux. To check, try 'xvinfo', it is the
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part of the XFree86 distribution. It should display a long text, similar
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to this:
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X-Video Extension version 2.2
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screen #0
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Adaptor #0: "Savage Streams Engine"
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number of ports: 1
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port base: 43
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operations supported: PutImage
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supported visuals:
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depth 16, visualID 0x22
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depth 16, visualID 0x23
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number of attributes: 5
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(...)
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Number of image formats: 7
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id: 0x32595559 (YUY2)
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guid: 59555932-0000-0010-8000-00aa00389b71
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bits per pixel: 16
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number of planes: 1
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type: YUV (packed)
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id: 0x32315659 (YV12)
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guid: 59563132-0000-0010-8000-00aa00389b71
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bits per pixel: 12
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number of planes: 3
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type: YUV (planar)
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(...etc...)
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It must support YUY2 packed, and YV12 planar pixel formats to be
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usable with MPlayer.
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5. Be sure MPlayer is compiled with the "xv" target. "./configure" should say:
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Checking for Xv ... yes
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6. If all is fine, try the option '-vo xv' . It should work.
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(if it doesn't, send us a bugreport. See the README on how to do this.)
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II. OpenGL drivers with *working* *fast* glTexSubImage() support.
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Currently only the old Utah-GLX drivers (for X 3.3.6) have it.
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See http://utah-glx.sourceforge.net for details about how to install it.
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The new X4/DRI and nVidia's binary drivers has no usable glTexSubImage :(
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III. Native card-specific drivers
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There is 3 native drivers for Linux:
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1. Matrox G200/G400/G450 BES (Back-End Scaler) support -> mga_vid kernel drv.
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It's active developed by me (A'rpi), and it has hardware VSYNC support
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with triple buffering. It works on both framebuffer console and under X.
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To use, simply compile the mga_vid.o in the drivers/ subdir (type: make)
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and load it with insmod mga_vid.o. You should verify the memory size
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detection using the 'dmesg' command. If it's bad, use the mga_ram_size
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option (rmmod mga_vid first), specify card's memory size in MB:
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insmod mga_vid.o mga_ram_size=16
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Using it from MPlayer: (you should re-compile it with mga_vid support...)
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Use the 'mga' vo driver on framebuffer console (matroxfb): -vo mga
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and use the xmga driver for X 3.3.x: -vo xmga
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Note: it works under X 4.0.2 too, but it conflicts with the Xv driver,
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so avoid using both. Usually X restart or reboot needs to get Xv usable
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again :(
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2. SiS 6326 YUV Framebuffer driver -> sis_vid kernel driver
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Its interface should be compatible with the mga_vid, but the driver
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was not updated after the mga_vid changes, so it's outdated now.
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Volunteers needed to test it and bring the code up-to-date.
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3. 3dfx (which ones?) YUV+scaler support, using /dev/3dfx (tdfx.o driver?)
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The /dev/3dfx kernel driver exists only for 2.2.x kernels, for use with
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Glide 2.x Linux ports. It's not tested with MPlayer, and so no more
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supported. Volunteers needed to test it and bring the code up-to-date.
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IV. If your card lacks hardware acceleration, you can still boost your fps by
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using the DGA driver:
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1. Make sure X loads the DGA extension:
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(II) Loading extension XFree86-DGA
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2. MPlayer's DGA driver is autodetected on ./configure, or you can force it
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with --enable-dga.
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3. Be sure to use 24/32bpp mode, since there is no converter right now.. :(
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4. Install MPlayer SUID root.
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'chown root /usr/local/bin/mplayer'
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'chmod 750 /usr/local/bin/mplayer'
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'chmod +s /usr/local/bin/mplayer'
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Now it works as a simple user, too.
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!!!! BUT STAY TUNED !!!!
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This is a BIG security risk! Never do this on a server or on a computer
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can be accessed by more people than only you because they can gain root
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privilegies through suid root mplayer.
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!!!! SO YOU HAVE BEEN WARNED ... !!!!
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5. Use '-vo dga' option, and there you go! (hope so:)
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If you have fast enough CPU (P3 800 for example) you can try fsdga for
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fullscreen mpeg playing (using software YUV->RGB scaling):
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mplayer -vo fsdga ...
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Gabucino & A'rpi
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