C++, std:ofstream, and controlling an amplifiers mute function
Recently, I updated the unit I am running applications on with a new CODEC and amplifier; the older parts are EOL. There was a bug with the old setup. For some reason, even when a tone was not being generated, you could hear a noise emanating from the speaker when the LCD brightness was on a higher setting.
In order to counteract that problem the Amplifiers mute function (standby for old amp) was toggled on and off before and after a tone was produced:
The problem is that now in order to get the same functionality to work with the new amplifier I have to surround the ofstream in sleep statments:
1) Any ideas about why this might be the case? I do not believe it's the mute function on the amplifier itself because outside of the application that uses this ofstream (inside the boot loader) I can play a song and toggle it on and off with the mute function, with no delay needed.
2) Is there another way (other than ofstream) of toggling the GPIO pin 107 from within my application?
Hi
I want both standard output and standard error of my command cmd to go to the same file log.txt. please let me know the best commandline to do this.
Thanks (2 Replies)
Hello all
Im using CC: Sun C++ 5.6 2004/07/15 and using the -library=stlport4 when linkning im getting
The fallowing error :
Undefined first referenced
symbol in file
std::ostream &std::ostream::operator<<(std::ios_base&(*)(std::ios_base&))... (0 Replies)
Hi,
I use the following command
make all > output-`date +%F-%H-%M-%S`.txt 2>&1
to invoke a MAKE process that takes some weeks to complete. The ouput is redirected to a text file. Now I prefix the above command with time to get time needed for completion of the MAKE process
time make... (2 Replies)
I am working on a script that lists files in a directory with a few file attributes depending on what option the user specifies at the command prompt. The script uses Getopt::Std and takes two switches.
The first switch allows the user to specify a directory, the second switch gives a long... (3 Replies)
Hi
We have a huge codebase in HP-UX and we are porting them in RH-Linux. I am facing the problem of making the following code work in gcc -
ofstream ofs;
int fd = open(fileName, openState, openMode));
func(fd);
......
......
const Boolean func(const int fileDescriptor)
{
... (2 Replies)
Hi,
Code written in C++ got compiled successfully using Sun 4.2 Compiler on Solaris 6. As part of migration, i am using same code and trying to compile using Sun 5.8 C++ compiler(Sun Studio11) on Solaris 10 and could not compile the below line,
outStr.attach(1); // here outStr is declared... (1 Reply)
Hi,
Can anyone tell me why the following program is giving compiler error when I use a friend function of a class as the comparison predicate for the third parameter of std::sort() algorithm? How to correct it, keep the 'friend' intact?
#include <iostream>
#include <vector>
#include <list>... (1 Reply)
Googling suggested "osascript -e 'set volume 0' " but that doesn't work.
I know I'd found this before... some command-line utility that had something to do with audio, mixers, whatever, but I forgot to keep it somewhere I could find it. I did find references to writing an AppleScript app, but... (3 Replies)
Why does removing "rhgb quiet" from the kernel boot parameters control whether or not the commands I enter are displayed in single user mode ?
For instance, if I do not remove "rhgb quiet", when I am in single user mode, whatever command I type will not be displayed on the screen.
The... (0 Replies)
Discussion started by: Hijanoqu
0 Replies
LEARN ABOUT SUSE
tiffcodec
CODEC(3TIFF)CODEC(3TIFF)NAME
TIFFFindCODEC, TIFFRegisterCODEC, TIFFUnRegisterCODEC, TIFFIsCODECConfigured - codec-related utility routines
SYNOPSIS
#include <tiffio.h>
const TIFFCodec* TIFFFindCODEC(uint16 scheme);
TIFFCodec* TIFFRegisterCODEC(uint16 scheme, const char *method, TIFFInitMethod init);
void TIFFUnRegisterCODEC(TIFFCodec *codec);
int TIFFIsCODECConfigured(uint16 scheme);
DESCRIPTION
libtiff supports a variety of compression schemes implemented by software codecs. Each codec adheres to a modular interface that provides
for the decoding and encoding of image data; as well as some other methods for initialization, setup, cleanup, and the control of default
strip and tile sizes. Codecs are identified by the associated value of the TIFF Compression tag; e.g. 5 for LZW compression.
The TIFFRegisterCODEC routine can be used to augment or override the set of codecs available to an application. If the specified scheme
already has a registered codec then it is overridden and any images with data encoded with this compression scheme will be decoded using
the supplied coded.
TIFFIsCODECConfigured returns 1 if the codec is configured and working. Otherwise 0 will be returned.
DIAGNOSTICS
No space to register compression scheme %s. TIFFRegisterCODEC was unable to allocate memory for the data structures needed to register a
codec.
Cannot remove compression scheme %s; not registered. TIFFUnRegisterCODEC did not locate the specified codec in the table of registered
compression schemes.
SEE ALSO libtiff(3TIFF)
Libtiff library home page: http://www.remotesensing.org/libtiff/
libtiff October 29, 2004 CODEC(3TIFF)