AudioConverterNew() failure
AudioConverterNew() failure
- Subject: AudioConverterNew() failure
- From: "Andreas Falkenhahn" <email@hidden>
- Date: Sun, 26 Aug 2007 13:08:02 +0200
Hi,
could someone please tell me why AudioConverterNew() fails with these inputs?
It returns 'fmt?' but I really don't see the problem here. I can successfully convert
any 8-bit encoded data (mono & interleaved stereo) with the audio converter, but
as soon as I skip to 16-bits encodings the audio converter cannot be created!?
// this is the output format
asbd.mFormatID = kAudioFormatLinearPCM;
asbd.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kAudioFormatFlagIsNonInterleaved;
asbd.mChannelsPerFrame = 2;
asbd.mSampleRate = 44100;
asbd.mBitsPerChannel = 32;
asbd.mFramesPerPacket = 1;
asbd.mBytesPerFrame = sizeof(Float32);
asbd.mBytesPerPacket = sizeof(Float32);
// this is the input format (16 bits, mono; but 16 bit interleaved stereo doesn't work either)
desc.mFormatID = kAudioFormatLinearPCM;
desc.mFormatFlags = 0;
desc.mChannelsPerFrame = 1;
desc.mSampleRate = 13964;
desc.mBitsPerChannel = 16;
desc.mFramesPerPacket = 1;
desc.mBytesPerFrame = 2;
desc.mBytesPerPacket = 2;
res = AudioConverterNew(&desc, &asbd, &converter);
res will be 'fmt?' and converter will be NULL. Why?
Tks
Andreas
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