Re: AudioConverterConvertBuffer
Re: AudioConverterConvertBuffer
- Subject: Re: AudioConverterConvertBuffer
- From: George Malayil-Philip <email@hidden>
- Date: Sat, 31 Dec 2005 01:45:41 -0500
- Thread-topic: AudioConverterConvertBuffer
Title: Re: AudioConverterConvertBuffer
Hi,
Finally figured why the AudioConvertComplexFillBuffer() wasn’t working. It had to do with how I was handling the inputProc. In the inputProc I was assiging the ioData parameter to another AudioBufferList that I had set up
ioData = ringBuffer.get();
This ringbuffer was returning a pointer to a AudioBufferList.
This apparently doesn’t work. We have to set up the ioData and copy the buffer into this AudioBufferList.
ioData.mBuffers[i].mData = malloc(bufferSize); --> will I leak memory because of this? I am not sure where and how to delete it if I am responsible for it...
memcpy(ioData.mBuffers[i].mData, buffer, bufferSize);
or something to the equivalent of this. Once I had rewritten the proc this way, things worked just fine. Hope this helps anyone else facing similar trouble :)
Still stumped as to why AudioConverterConvertBuffer() doesn’t work...but, as I have gotten the fillcomplexbuffer() to work I am giving up on this approach.
Regards
George M.P.
Hello George,
I really don't know anything specific about this function that you are calling but I would venture to guess that both buffers must be Altivec (8 byte) aligned to work.
Jeremy
On Dec 29, 2005, at 5:06 AM, George Malayil-Philip wrote:
This convert call however terminates with EXC_BAD_ACCESS in a
FloatToNativeInt32_Altivec(or something similar) function.
This to me indicates I am having some kind of uninitialized memory problem.
But for the life of me I can't figure out what...But the output buffers seem
to be initialized and the dataSize is set correctly, and the input buffers
point to valid data too...any advice on this much appreciated.
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