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# This file describes what you need to change in
# the active "Device" section of your XF86Config.
# If you use another (non-XFree86) X server, make similar
# changes to your equivalent X windows config file.
# Also see gatos.conf.sample.
Section "Device"
Identifier "ATI graphics card"
VendorName "ATI"
BoardName "ATI graphics card"
# First determine size of video capture buffers:
# Best size is 864kb for PAL/SECAM or 600kb for NTSC,
# which gives full TV quality capture and display.
# Smaller values can be used, but at a loss of quality.
# The video capture buffers are an essential link in the video
# processing chain, and they can *only* reside in video memory.
# The TV/video X window can be any size, and is
# independant of the capture buffer size, but smaller
# buffers will result in poorer display quality.
# To select a buffersize, choose from the table below:
# FULL is full TV quality (and max memory usage),
# XCIF is 3/4 size (non-standard size, uses 40% less memory),
# CIF is 1/2 size (1/4 memory),
# QCIF is 1/4 size (1/16 memory),
# ICON is 1/8 size (1/64 memory).
#
# CIF is a bit blurry, and QCIF and below
# will give a *very* poor quality display.
# PAL | size: FULL XCIF CIF QCIF ICON
# and | geometry: 768x576 576x432 384x288 192x144 96x72
# SECAM | memory: 864kb 486kb 216kb 54kb 14kb
# NTSC | size: FULL XCIF CIF QCIF ICON
# and | geometry: 640x480 480x360 320x240 160x120 80x60
# PAL-M | memory: 600kb 338kb 150kb 38kb 10kb
# If you specify a buffer memory size not listed above,
# xatitv/GATOS will automatically choose the largest among the
# ones listed above that will fit in the given buffer space.
# For the curious, the formula is:
# ( HorizontalMax * VerticalMax ) / 512 ) kilobytes,
# rounded up to nearest kilobyte,
# where HorizontalMax * VerticalMax is the
# maximum geometry of the video capture buffers.
# Xatitv/GATOS uses the top of video memory for the
# buffers (the size of which you've chosen above).
# You must ensure that the X server doesn't use
# this memory as well, or you'll get pixmap and font
# corruption, or the X server may crash or hang.
# This can be avoided like this:
# Don't let the X server autodetect the amount of videoram,
# but give it: (amount of videoram in kb) - <BUFFERSIZE>kb.
# This avoids *all* problems with the capture buffers
# corrupting X server structures in offscreen video memory.
# Drawback: The X server will have <BUFFERSIZE>kb less
# video memory available to the framebuffer and offscreen
# structures, even when xatitv/GATOS is not running.
# This may decrease your maximum possible screen or desktop size.
# The line uncommented below as an example is for maximum quality
# with a PAL or SECAM tuner and a card with 8MB of video memory.
#VideoRam 8192 # 8Mb of video RAM on card, PAL/SECAM tuner.
VideoRam 7328 # 8Mb - 864kb for buffers. -Uncomment this line
#VideoRam 8192 # 8Mb of video RAM on card, NTSC/PAL-M tuner.
#VideoRam 7592 # 8Mb - 600kb for buffers. -Uncomment this line
#VideoRam 4096 # 4Mb of video RAM on card, PAL/SECAM tuner.
#VideoRam 3232 # 4Mb - 864kb for buffers. -Uncomment this line
#VideoRam 4096 # 4Mb of video RAM on card, NTSC/PAL-M tuner.
#VideoRam 3496 # 4Mb - 600kb for buffers. -Uncomment this line
EndSection
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