Re: AudioConverter 8.24 to Float32
Re: AudioConverter 8.24 to Float32
- Subject: Re: AudioConverter 8.24 to Float32
- From: Mark's Studio <email@hidden>
- Date: Wed, 12 Nov 2008 08:08:38 +0100
On 11/11/2008, at 23.10, William Stewart wrote:
(Oh and just to be clear, float is not currently supported on iPhone
- it is on the desktop)
??? do you mean i can't use the AudioConverter to convert to float on
the iPhone ?
Float64 sampleRate;
size = sizeof(sampleRate);
XThrowIfError
(AudioSessionGetProperty
(kAudioSessionProperty_CurrentHardwareSampleRate, &size, &sampleRate),
"couldn't get new sample rate");
CAStreamBasicDescription destFormat;
CAStreamBasicDescription srcFormat;
outFormat.mSampleRate = sampleRate;
srcFormat.mSampleRate = outFormat.mSampleRate;
srcFormat.mFormatID = outFormat.mFormatID;
srcFormat.mFormatFlags = outFormat.mFormatFlags;
srcFormat.mBytesPerPacket = outFormat.mBytesPerPacket;
srcFormat.mFramesPerPacket = outFormat.mFramesPerPacket;
srcFormat.mBytesPerFrame = outFormat.mBytesPerFrame;
srcFormat.mChannelsPerFrame = 1;
srcFormat.mBitsPerChannel = outFormat.mBitsPerChannel;
destFormat.mSampleRate = outFormat.mSampleRate;
destFormat.mFormatID = kAudioFormatLinearPCM;
destFormat.mFormatFlags = kAudioFormatFlagIsFloat |
kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked;
destFormat.mBytesPerPacket = outFormat.mBytesPerPacket;
destFormat.mFramesPerPacket = outFormat.mFramesPerPacket;
destFormat.mBytesPerFrame = outFormat.mBytesPerFrame;
destFormat.mChannelsPerFrame = 1;
destFormat.mBitsPerChannel = outFormat.mBitsPerChannel;
outFormat.Print(outFormat);
srcFormat.Print(srcFormat);
destFormat.Print(destFormat);
XThrowIfError(AudioConverterNew(&srcFormat, &destFormat,
&audioConverter), "couldn't get AudioConverterNew");
and then in PerformThru()
AudioUnitRender()
AudioConverterConvertBuffer(....ioData->mBuffer[0].mData,...)
i get a -50 error from AudioConverterConvertBuffer()
is this not possible ?
On Nov 11, 2008, at 2:08 PM, William Stewart wrote:
float is not supported
On Nov 11, 2008, at 7:26 AM, Mark's Studio wrote:
In the aurioTouch sampleCode the format is 8.24 i have tried to
add a AudioConverterNew to convert to float, but either i get a
-50, or a !fmt error,
it look's like there is already an AudioConverter running maybe
for the 16bit to 8.24,
how do i setup the format for the AudioConverterNew so i can have
Float32 instead of 8.24,
i am mostly interested in converting the input buffer.
Peter Mark
Mark's Recording Studio A/S
Lundeskovsvej 3
2900 Hellerup
Denmark
Tel: +45 35366078
Fax: +45 35366038
Mobile: +45 20416018
www.marks-studio.dk
email@hidden
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Peter Mark
Mark's Recording Studio A/S
Lundeskovsvej 3
2900 Hellerup
Denmark
Tel: +45 35366078
Fax: +45 35366038
Mobile: +45 20416018
www.marks-studio.dk
email@hidden
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Do not post admin requests to the list. They will be ignored.
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