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AUDIO.readme
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1995-05-07
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NOTE: You must edit either the Imakefile or the Makefile to
and uncomment out the AUDIO DEFINES and Libraries for your
machine type before compiling.
--------------------------------------------------------------
What's Supported
--------------------------------------------------------------
The following is a list of currently supported audio formats:
AVI 8 and 16 bit RAW(PCM) mono/stereo.
AVI ADPCM is supported(mono only for now).
Quicktime 8 and 16 bit RAW(PCM) mono/stereo.
Quicktime 8 and 16 bit TWOS(signed PCM) mono/stereo.
Quicktime MAC6 is *NOT* supported.
The following is a list of currently supported machines:
Sun Sparcs
NEC EWS workstations
Sony NEWS 5000 series workstations
SGI Indigo
PC with soundcards running unix/linux/QNX
Any machine running AudioFile(AF)
Any machine(or Xterminal) running Net Audio (NAS)
HP 9000/715 - sort of working - still has problems.
IBM AIX S6000 machines with audio.
--------------------------------------------------------------
Generic Bug's
--------------------------------------------------------------
+ JPEG/MPEG codecs, because of their compute intensive nature, cause
audio starvation(pops). Solution is to use +b option. Looking
into other causes.
+ Remote Control Window colors not selectable.
+ HP support pseudo functional. Still needs a lot of work.
--------------------------------------------------------------
New(or Fixes) to 2.69.7.8
--------------------------------------------------------------
+ fixed bad core dump bug in some audio section. overwriting
a buffer.
+ SGI syncing problem fixed. Audio was block and preventing
video from be able to play at speed.
+ A handful of minor bugs where fixed in the MPEG routines.
Two caused corruption and one prevented bottom part of
screen from being drawn with certain resolutions.
+ MPG wasn't properly flushing bits after a new quant scale
+ MPG if height > bug, was truncating bottom of image.
+ MPG spurious warning messages(DCT-A and DCT-B err) removed.
+ AVI RGB depth 24 support added.
+ AVI XMPG support added. This is the Editable MPEG Video
Codec and if the spec matches the sample I have, it's
a Kludge. The AVI Headers DON'T match(as in resolution and
proper audio/video timing) the MPEG SEQ header which looks
to have the correct info.
+ AVI support for "pads" streams(or rather tolerance for).
+ HP Raw audio device support to bypass upper lever HP
audio server routines.
+ QT: minor bug in Gray Colormap generation.
+ DL animation format thrown back in and now allows it to
be readable from the file.
+ IFF Anim8 support written by Garrick Meeker.
+ Added Quiet flag(+q) to prevent XAnim title from being
printed out to tty. Useful when called in background by
another program.
+ AUDIO fixed bug where anims without audio prevent following
anims with audio from enabling that audio.
+ AUDIO Fixed scaling bug in ADPCM audio code. Affected main 8khz
machines.
+ Fixed compile bug when compiling without Remote Control Window.
+ cleaning and simplifying internal structures. reducing global
variables, etc.
--------------------------------------------------------------
New(or Fixes) to 2.69.7.7
--------------------------------------------------------------
+ remodified audio/video sync code yet again. This time to
help smooth out some startup syncing problems and to help
handle more compute intensive video(large frame or jpeg/mpeg).
+ Added IBM RS6000 audio support - Code written by Jeff Kusnitz, thanks.
+ Fixed bug in NAS audio that caused memory corruption after
an "unable to Toggle" warning(which occurs if a machine has
an audio device with a fixed output).
+ Merged Audio_Outputs into one routine so I didn't have to
keep modifying all of them(95% of the code was the same).
+ Added Dithering(+F option) to Cinepak Video Codec. It's on
by default unless +CF4 is used(list +F after that to override).
+ Fixed Bug with some RLE depth 1 codec.
+ Fixed audio Bug with SGI generated quicktimes audio depth > 8.
+ Fixed bug that was causing quicktime to erroneously send
back a FULL_IM flag allowing serious skipping to occur. This
causes on screen corruption if the Video Codec doesn't
really support serious skipping.
--------------------------------------------------------------
New(or Fixes) to 2.69.7.6
--------------------------------------------------------------
+ Added MPEG support for Type I frames. Type B and Type P
frames are currently skipped, but will be added in the
future. Although I've rewritten large chunks of it, the
core decoding routines are from mpeg_play.
+ Added Sony NEWS workstation audio support. Thanks to
Kazushi Yoshida for writing the code.
+ Fixed some bugs in the JPEG routines.
--------------------------------------------------------------
New(or Fixes) to 2.69.7.5
--------------------------------------------------------------
+ JPEG: code massively rewritten and optimized. MJPG and IJPG
video codecs now supported.
+ CVID: some optimization here.
+ SGI: sgi hardware volume is actually exponential. Now XAnim's
SGI volume function is also exponential
+ Sparc: had some problems with older Sparc audio devices that
couldn't support NOT having an audio channel selected. The
Sparc audio ports are now radio button style.
+ Sparc: Some serious incompatibility problems between gcc/cc
and the /usr/includes and gcc's /usr/includes. Fixed for now.
Was causing ioctl err 22's during run time on certain
machine configurations.
--------------------------------------------------------------
New(or Fixes) to 2.69.7.4a
--------------------------------------------------------------
+ ALL: You can now add sound to animations that don't have
sound support(ie FLI/FLC/IFF) by specifying a .wav file
after the animation file. ie "xanim bart.fli laugh.wav".
Only some .wav audio compression are currently supported,
more on the way. NOTE: if audio is longer than animation,
then animation waits on the last frame until audio is done.
+f option currently doesn't affect .wav files.
+ PC: best variable not defined in Linux_Closest_Freq() err.
+ PC: libjpeg.a already used by the system and was being found
1st by the linker causing errors. Renamed to libxajpg.a.
+ ALL: Solution that helps high frame rate anims on SGI machines
was hurting some others. Now only fixed on SGI machines.
+ ALL: work around to help play some broken FLC's.
--------------------------------------------------------------
New(or Fixes) to 2.69.7.4
--------------------------------------------------------------
+ Fixed bug with Quicktime signed(TWOS) 16 bit stereo audio format.
+ Fixed bug with +f option and any 16 bit audio format.
+ +Ae is now be made enabled by default.
+ SPEAKER env variable checked(INTERNAL/HEADPHONES/EXTERNAL/NONE).
+ RemoteControl Window made smaller and now has dynamically
changing bitmaps to better indicate current function of
the buttons.
+ RemoteControl window no longer overlaps Anim Window.
+ "+Ar" option enables/disables RemoteControl Window.
+ "z" window command pops creates/destroys RemoteControl Window
on-the-fly.
+ More fine tuning of video/audio routines.
+ AVI ADPCM is no longer decompressed 1st. +f now works with
this audio codec.
+ AVI JPEG Video Codec support added, including interleaved frames.
+ AVI MJPG Video Codec support added.
+ HP: finally code sound out of an HP. Code still has a ways to go.
And HP Aserver library seems to be part of the problem.
--------------------------------------------------------------
Configuring For Your Machine
--------------------------------------------------------------
You'll need to edit the Makefile or the Imakefile. Go to the Audio
section and uncomment out the DEFINE's associated with your machine
type. Make sure no other machine's DEFINE's are uncommented. That
would be bad.
--------------------------------------------------------------
Sun Sparc Specific Info
--------------------------------------------------------------
IF YOUR ARE USING OPENWINDOWS THEN YOU MUST USE Makefile.unx
AND YOU MUST EDIT THE CHANGES REQUIRED. This is because of
bugs/deficiencies with the OpenWindows Athena libraries.
See top of Makefile.unx for more details.
Having some problems with gcc, because it wants to use it's
own include files and they're usually wrong(or out of date).
Use cc if this happens.
If you are using Solaris, use the -DSOLARIS define in the Makefile.
--------------------------------------------------------------
Linux(soundcard) Specific Info
--------------------------------------------------------------
Compiles and runs on 8 bit and 16 bit sound cards(sound driver 2.5 and 2.99).
Some video/audio syncing problem with driver 2.5 that got better with 2.99.
--------------------------------------------------------------
SGI Specific Info
--------------------------------------------------------------
NEWSFLASH. The audio stuff should be included now in Irix 5.3. You
might be able to obtain them for free if you have the Irix 5.1 or
Irix 5.2 releases, but that's just a rumor.
If you have Irix 5.1 or greater then make sure you have installed
the digital media development subsystem (dmedia_dev.sw.audio) off
of the CD-ROM.
If this isn't on your CD_ROM then read on...
"according to the 5.2 readme first page, it says
that the Audio Development software has been moved from
the IDO to a purchasable option, IRIS media libraries. "
And you either have to contact SGI and buy it($495) OR
In the meantime, you can compile XAnim on an Irix 4.0.5 machine
and the XAnim binary should work back on the original Irix 5.1
or 5.2 machine.
Once XAnim audio is stablized on SGI's, I should be able to provide
an xanim executable. NOTE: I don't have nor can I legally distribute
the SGI audio libraries and include files.
--------------------------------------------------------------
HP Specific Info
--------------------------------------------------------------
Written and getting better, but still has a ways to go.
With HP's you need to start up the system Audio Server before
you can use ANY audio program. Here's how(from the Audio.man
page on an HP 700/915):
Step 1. Start the NCS Local Location Broker Daemon.
Task 1. If you are not already superuser, log in as
superuser.
Task 2. Enter the command line /usr/etc/ncs/llbd&&&&.
To make llbd start automatically at boot
time, edit the file /etc/netncsrc and change
the line START_LLBD=0 to START_LLBD=1.
Step 2. Reboot.
Step 3. Set the AUDIO environment variable to specify the node
where the audio client should look for the audio
server. If AUDIO is not set or if it is set to :0, the
client connects with a server on the same node.
To specify that the client should connect to a server
on another node, set
AUDIO = node_name: (Korn, Bourne, and POSIX
shells)
export AUDIO
or
setenv AUDIO node_name: (C shell)
Step 4. Normally, the audio server starts whenever the system
is booted. Check for the existence of the Aserver
processes by typing
ps -e | grep Aserver
You should see two Aserver processes. If the server is not
running, start the audio server by hand by typing
/usr/audio/bin/Aserver
Then type
ps -e | grep Aserver
and check that there are two active server processes.
--------------------------------------------------------------
IBM RS6000 Specific Info
--------------------------------------------------------------
Waiting for feedback on how it works.
--------------------------------------------------------------
AudioFile (AF) Specific Info
--------------------------------------------------------------
I haven't brought up AF yet on my machine, but have gotten
reports that it works okay.
--------------------------------------------------------------
Net Audio (NAS) Specific Info
--------------------------------------------------------------
I have brought NAS up on my machine and have fine tuned it. NAS
has some deficiencies that make it difficult to keep audio/video
in sync. Hopefully they'll improve it and likewise I'll improve
my understanding of it and work from there.
--------------------------------------------------------------
Any comments, questions, bugs, fixes, etc email me at
podlipec@wellfleet.com or podlipec@shell.portal.com
If you make changes to the audio code, please send entire
xanim_audio.c file unless the patches are minor.
--------------------------------------------------------------