03-03-2014
AudioScope has had a magazine review. <shock>
Hi Admin and Staff...
Thanks for hosting AudioScope.sh on this site. I have had the biggest surprise of my life today.
This months issue of the UK Linux magazine "Linux Format" have done a small piece on the project.
Issue April 2014, LXF 182, page 65...
This I never expected and I really owe it all to you guys and those that have chipped in with bits and pieces...
Once again thanks to all who gave help but I realise I am only scratching the surface of shell scripting.
It is entirely my _language_ of choice now...
These 3 Users Gave Thanks to wisecracker For This Post:
9 More Discussions You Might Find Interesting
1. OS X (Apple)
Hi all...
Has _below_ ever been done in UNIX shell scripting before?
(I have done this easily in Python but this is using purely the shell.)
The DEMO version IS built and has been tested.
Pre-amble...
I now need at least one control pulse for the AudioScope.sh when in PURELY audio I/O mode,... (2 Replies)
Discussion started by: wisecracker
2 Replies
2. Cybersecurity
A severe vulnerability was discovered in Bourne shell.
Just google for: bash vulnerability
... for more details. (5 Replies)
Discussion started by: Cochise
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3. Shell Programming and Scripting
Development machine:- Standard MBP 13 inch, OSX 10.7.5...
GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin11)
Copyright (C) 2007 Free Software Foundation, Inc.
Scenario:- Audio capture for AudioScope.sh for CygWin without ANY third party installs.
I am trying my hardest to get a... (6 Replies)
Discussion started by: wisecracker
6 Replies
4. OS X (Apple)
Hi guys...
Well I have entered an area of partial insnity... ;o)
Below is a photo of the 'ALTDC' board for AudioScope.sh...
I have decided to incorporate all three methods for obtaining DC into this MBP via the MIC input.
1) VFO.
2) CHOPPER.
3) COUNTER.
The controller for the COUNTER... (9 Replies)
Discussion started by: wisecracker
9 Replies
5. What is on Your Mind?
Boy oh boy, with only a MONO mic input to use AudioScope gets much more difficult when the ALTDC board is included.
It needs, so far, two hits at the MIC input with a single hit at the HEADPHONE audio output.
The first at the highest practical resolution for the AC component and the second... (0 Replies)
Discussion started by: wisecracker
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6. OS X (Apple)
Hi all...
Apologies for any typos...
For those intersted in the AudioScope the next construction is finished.
I have not been totally idle but working out the hard stuff to be able to be very simple to build.
It is a single transistor simple timer that lasts for about 1.2 to 1.8 seconds.... (2 Replies)
Discussion started by: wisecracker
2 Replies
7. News, Links, Events and Announcements
Not sure if this is the right forum...
But a mini Raspberry PI, Raspberry PI Zero, free with MagPI magazine...
Shrinking to Zero: The Raspberry Pi gets smaller - BBC News
Fantastic for a simple Raspbian Debian based project... (0 Replies)
Discussion started by: wisecracker
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8. UNIX for Advanced & Expert Users
Using AudioScope.sh on Ubuntu 17.04 from a live DVD disc I came across an error.
Consider the code below it is a MUCH shortened version of the KEYBOARD input in AudioScope.
#!/bin/bash
bash --version
uname -a
status=0
KEYBOARD()
{
read -r -p "Enter QUIT or EXIT to quit:- " kbinput
if ||... (11 Replies)
Discussion started by: wisecracker
11 Replies
9. OS X (Apple)
AudioScope Project.
(Apologies for any typos.)
For the few following......
AudioScope.sh...
Now at Version 0.60.00.
Well this baby has come a long way since its inception in January 2013. It is now at Version 0.60.00. It is MUCH more Apple centric now with a new OSX Sierra minimum _silent_... (7 Replies)
Discussion started by: wisecracker
7 Replies
LEARN ABOUT REDHAT
sdl_locksurface
SDL_LockSurface(3) SDL API Reference SDL_LockSurface(3)
NAME
SDL_LockSurface- Lock a surface for directly access.
SYNOPSIS
#include "SDL.h"
int SDL_LockSurface(SDL_Surface *surface);
DESCRIPTION
SDL_LockSurface sets up a surface for directly accessing the pixels. Between calls to SDL_LockSurface and SDL_UnlockSurface, you can write
to and read from surface->pixels, using the pixel format stored in surface->format. Once you are done accessing the surface, you should use
SDL_UnlockSurface to release it.
Not all surfaces require locking. If SDL_MUSTLOCK(surface) evaluates to 0, then you can read and write to the surface at any time, and the
pixel format of the surface will not change.
No operating system or library calls should be made between lock/unlock pairs, as critical system locks may be held during this time.
It should be noted, that since SDL 1.1.8 surface locks are recursive. This means that you can lock a surface multiple times, but each lock
must have a match unlock.
.
.
SDL_LockSurface( surface );
.
/* Surface is locked */
/* Direct pixel access on surface here */
.
SDL_LockSurface( surface );
.
/* More direct pixel access on surface */
.
SDL_UnlockSurface( surface );
/* Surface is still locked */
/* Note: Is versions < 1.1.8, the surface would have been */
/* no longer locked at this stage */
.
SDL_UnlockSurface( surface );
/* Surface is now unlocked */
.
.
RETURN VALUE
SDL_LockSurface returns 0, or -1 if the surface couldn't be locked.
SEE ALSO
SDL_UnlockSurface
SDL
Tue 11 Sep 2001, 23:01 SDL_LockSurface(3)