ExtAudioFileRead
ExtAudioFileRead
- Subject: ExtAudioFileRead
- From: Aran Mulholland <email@hidden>
- Date: Wed, 8 Sep 2010 21:09:54 +1000
Hello all,
I am reading audio data from a wav file to populate a ring buffer and
I have some issues when I get to the end of the file and want to start
reading from back at the beginning.
I am reading in 4096 frames at a time with the line
result =
ExtAudioFileRead(mSoundBuffer->fileReference, &numPackets, bufList); -
where numPackets is 4096.
Audio plays correctly.
when i near the end of the file I cannot read 4096 frames as I have
less than that left in the file. So I calculate the number to be read
and read that number.
result =
ExtAudioFileRead(mSoundBuffer->fileReference, &numPackets, bufList); -
where numPackets is say 544.
Then i reset the read pointer using
SInt64 position = 0;
result = ExtAudioFileSeek(mSoundBuffer->fileReference, position);
After this point, whenever I do an ExtAudioFileRead the numPackets is
always 544 - the number it was to get me to the end of the file.
Anyone have a similar experience, or know what i might be doing wrong?
Thanks
Aran
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