You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
147 lines
5.2 KiB
147 lines
5.2 KiB
|
|
kscdmagic is based on synaesthesia
|
|
by Paul Harrison <pfh@yoyo.cc.monash.edu.au>.
|
|
|
|
-dirk <milliByte@gmx.net>
|
|
|
|
|
|
|
|
|
|
SYNAESTHESIA v2.0
|
|
|
|
Introduction
|
|
============
|
|
|
|
This is a program for representing sounds visually from a CD or line
|
|
input or piped from another program. It goes beyond the usual oscilliscope
|
|
style program by combining an FFT and stereo positioning information to
|
|
give a two dimensional display. Some of the shapes I have observed are:
|
|
* Drums: clouds of color, fairly high
|
|
* Clean guitar: several horizontal lines, low down
|
|
* Rough guitar: a cloud, low down
|
|
* Trumpet: Lots of horizontal lines everywhere
|
|
* Flute: A single horizontal line, low down
|
|
* Voice: A vertical line with some internal structure
|
|
* Synthesizer: All kinds of weird shapes!
|
|
|
|
Synaesthesia can run in a window in X or full screen using SVGAlib.
|
|
|
|
The display represents frequency as vertical position on screen,
|
|
left-right position as left-right position on screen. It can also
|
|
understand surround sound encoded music, and shows ambient noise
|
|
in orange.
|
|
|
|
X-Windows support was added in version 1.3, as well as a major redesign
|
|
of the interface. You can use Synaesthesia as a fully functional
|
|
CD player, suitable for use while working.
|
|
|
|
There is command line support for play lists and piping from another
|
|
program (such as an mp3 player).
|
|
|
|
Usage
|
|
=====
|
|
|
|
Synaesthesia should work on Linux and BSD systems. (Note: I don't
|
|
have access to a BSD system myself, I have to rely on patches -- if it
|
|
doesn't work, please tell me!) LinuxPPC users may have to use the pipe
|
|
mode rather than taking sound input from the CD player, as I believe
|
|
sound recording is not yet implemented.
|
|
|
|
Compile Synaesthesia by typing
|
|
|
|
make
|
|
|
|
then install it by typing
|
|
|
|
make install
|
|
|
|
This will create three versions of Synaesthesia:
|
|
|
|
synaesthesia - full screen SVGAlib version (Linux only)
|
|
xsynaesthesia - Version that runs as a window in X
|
|
sdlsynaesthesia - Version that uses the SDL graphics library
|
|
|
|
If you want to use the SDL version, you need to get SDL from
|
|
http://www.devolution.com/~slouken/SDL.
|
|
|
|
You will need to run Synaesthesia as root to run it full screen
|
|
with SVGAlib. Other varieties can be run by any user providing you
|
|
provide permissions on /dev/dsp, /dev/cdrom, and /dev/mixer.
|
|
|
|
Synaesthesia creates a configuration file, named ~/.synaesthesia,
|
|
to store settings such as brightness, color, and window size, as
|
|
well as which devices to use to control sound input.
|
|
|
|
BSD users will have to edit this file to set the CD-ROM device name
|
|
before using Synaesthesia in order to control the CD.
|
|
|
|
Run Synaesthesia with no parameters for further information on how to
|
|
use it.
|
|
|
|
Notes for code rippers
|
|
======================
|
|
|
|
This program contains code that you may wish to use in your own projects.
|
|
If you want to, please do. (For example, you might want to add some
|
|
snazzy visual effects to your favorite MP3 or CD player)
|
|
|
|
The actual code to do the mapping from sound to visual display is
|
|
all in core.cpp, it should be fairly easy to disentangle from other
|
|
parts of the program. It does make reference to some globals defined
|
|
in syna.h, namely the #defines m (log2 of the sample size for each
|
|
frame) and brightness, data (which stores the sound input), outputBmp,
|
|
lastOutputBmp and lastLastOutputBmp (which hold the output), outWidth
|
|
and outHeight (size of the bitmaps), and fadeMode, brightnessTwiddler,
|
|
starSize and pointsAreDiamonds (various parameters affecting the display).
|
|
|
|
The normal way to use it would be:
|
|
|
|
Call coreInit() to set up some look-up tables
|
|
Call setStarSize(starSize) to set up some more look-up tables
|
|
Loop
|
|
Put data into the data array
|
|
Call fade() to apply the fade/wave/heat effect to the output
|
|
Call coreGo() to add the next fragment of sound input to the output
|
|
Display contents of outputBmp to screen
|
|
|
|
There is a simple anti-aliased polygon drawing engine in the file
|
|
polygon.h. sound.cpp contains code for driving the CD. xlib.c and
|
|
xlibwrap.cpp contain code for setting up a window under X (originally
|
|
ripped from the Xaos fractal viewer program :-) ).
|
|
|
|
Authors
|
|
=======
|
|
|
|
This program is free. If you like it, or have any suggestions, please
|
|
send me (Paul Harrison) an email (pfh@yoyo.cc.monash.edu.au).
|
|
|
|
Thanks to Asger Alstrup Nielsen for many great suggestions, and for
|
|
writing optimized 32 bit loops for fading and drawing to screen.
|
|
|
|
Thanks to Roger Knobbe for porting Synaesthesia to FreeBSD.
|
|
|
|
Thanks to Ben Gertzfield and Martin Mitchell for some small fixes to the
|
|
CD controlling code.
|
|
|
|
Thanks to Simon Budig for an improvement to the X code.
|
|
|
|
Changes
|
|
=======
|
|
|
|
1.1 - Added surround sound decoding.
|
|
1.2 - Fixed a bug in the ioctl calls to /dev/dsp.
|
|
1.3 - Asger Alstrup Nielsen's optimizations added.
|
|
Added X-Windows support.
|
|
More options, redesigned interface.
|
|
1.4 - Bug fixes, including a great reduction in
|
|
"Sound: Recording overrun" warnings.
|
|
New command line options: play lists and piping.
|
|
Support for SDL.
|
|
2.0 - Bug fixes: Fixed problem in xlib.c that caused occasional segfaults,
|
|
several endianness problems fixed.
|
|
New effects: Wave, heat, diamond shaped points.
|
|
Piping sound now longer requires the twiddle factor.
|
|
Yet another interface redesign.
|
|
Partial support for LinuxPPC (pipe mode only)
|
|
|