Re: Slow seeking in MP3 files using ExtAudioFile
Re: Slow seeking in MP3 files using ExtAudioFile
- Subject: Re: Slow seeking in MP3 files using ExtAudioFile
- From: Christopher Atlan <email@hidden>
- Date: Thu, 22 Jan 2009 21:20:40 +0100
Hi Hamish,
my
approach has been to use an AudioFileStream to read the first few
packets until the bitrate is reasonably stable, then use that to allow
skipping (simply jumping to a byte offset within the data and passing
kAudioFileStreamParseFlag_Discontinuity). This approximation has been
reasonable for my purposes, but presumably would get less accurate if
more metadata e.g. album artwork were present.
I'm trying the same thing, but I use AudioFileStreamGetProperty
kAudioFileStreamProperty_FrameToPacket and AudioFileStreamSeek for the
offset which works fine.
My problem is that AudioQueue still plays some buffers before it
starts playing from the new position.
I try it with this sequence:
AudioQueuePause();
AudioQueueReset();
AudioFileStreamSeek();
AudioQueueStart();
I tried a lot other things, but besides from open a Developer
Technical Support request and get the answer from the mothership I
have no other idea to get seeking work correct.
Christopher
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