Apple

Remove the big endian flags and try again.

I did so: changed my RemoteIO ASBD to use kAudioUnitFlagsCanonical. On the device and simulator I get identical, correctly pitched but garbled sound as before.

I am generating like so:

AudioBuffer *leftAudioBuffer = &buffers->mBuffers[0];

AudioBuffer *rightAudioBuffer = &buffers->mBuffers[1];

SInt16 *leftData = (SInt16 *) leftAudioBuffer->mData;

SInt16 *rightData = (SInt16 *) rightAudioBuffer->mData;

engine->getStereoSamples(_tmpBuf, numFrames);

for (int i = 0; i < numFrames; i++) {

leftData[i] = OSSwapHostToLittleConstInt16(_tmpBuf[i].left * INT16_MAX);

rightData[i] = OSSwapHostToLittleConstInt16(_tmpBuf[i].right * INT16_MAX);

}

return noErr;

Tried various OSSwapXXtoYY with identical results each time, and no swap also with identical results. The floats (ie _tmpBuf[i].left and .right) are in the range -1.0..1.0 as they should be.

Turned off the recording stuff for now until I've pinned down the correct generation code.

On 6 Dec 2012, at 10:12, Joel Reymont wrote:

On Thu, Dec 6, 2012 at 2:58 PM, Tim Kemp <email@hidden> wrote:
It's required for extended audio file services.

I don't think so.

Plus, you are not doing little to big endian conversion in your code,
hence the garbled data.

Remove the big endian flags and try again.

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