Re: Questions about AudioStreamBasicDescription
Re: Questions about AudioStreamBasicDescription
- Subject: Re: Questions about AudioStreamBasicDescription
- From: Fredrik <email@hidden>
- Date: Mon, 2 Feb 2009 00:05:32 +0100
Hi,
Isn´t the CAStreamBasicDescription a C++ class made for the example
only? I´m not trying to build the example code. I´m referring to a
struct called AudioStreamBasicDescription that AFAIK is part of
CoreAudio documented here.
http://developer.apple.com/documentation/MusicAudio/Reference/CACoreAudioReference/CoreAudioTypes/index.html
1 feb 2009 kl. 23.45 skrev Bob Lang:
Hi
I think you need the following include:
#include "CAStreamBasicDescription.h"
and you need to add the (.h?) and .cpp source from /Developer/
Examples/CoreAudio/PublicUtility to build External Frameworks part
of your project.
There's all sorts of useful types in PublicUtility
Bob
--
On 1 Feb 2009, at 17:43, Fredrik wrote:
This is what I included in the .c file:
#include <stdio.h>
#include <Carbon/Carbon.h>
#include <AudioToolbox/AudioToolbox.h>
#include <CoreAudio/CoreAudio.h>
And this is how I compiled it:
gcc -framework Carbon -framework AudioToolbox -framework CoreAudio
myApp.c -o myApp
I might have made some mistake, though.
1 feb 2009 kl. 11.29 skrev tahome izwah:
Did you include the CoreAudio.framework in your project?
--th
2009/2/1 Fredrik <email@hidden>:
So I have just recently started to look into core audio and have
started to
experiment with a simple file format converter.
In one of AudioFileCreate´s fields an AudioStreamBasicDescription
seems to
be called for.
I keep getting a compile error saying:
AudioStreamBasicDescription and my
own struct of this type is undeclared.
It should be included in CoreAudio.h right?
This is what I did:
AudioStreamBasicDescripton OutFormat;
OutFormat.mSampleRate = 44100;
OutFormat.mFormatID = kAudioFormatLinearPCM;
OutFormat.mFormarFlags =
kLinearPCMFormatFlagIsSignedInteger;
OutFormat.mBytesPerPacket = 2;
OutFormat.mFramesPerPacket = 1;
OutFormat.mBytesPerFrame = 2;
OutFormat.mChannelsPerFrame = 1;
OutFormat.mBitsPerChannel = 16;
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