[mythtv] MythMusic and planar data

[Paul Harrison]

From: Jean-Yves Avenard <jyavenard at gmail.com>

To: Development of mythtv <mythtv-dev at mythtv.org> 
Sent: Thursday, 4 April 2013, 1:04
Subject: [mythtv] MythMusic and planar data
 

For paul-h seeing he's not online on IRC...

[10:47am] jya_: paul-h: I have made a convenience method to convert planar data into interleaved one…. it's just in various places: RAOP and avformatdecoder.cpp… Though this shouldn't be something new in ffmpeg/1.1 , would have been the same in 1.0
[10:48am] jya_: most codecs in ffmpeg now returns planar decoded data
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[10:54am] jya_: check line 4984 in avfd.cpp this is how you detect if audio is planar or not. You should use this to convert to standard format (which is independent to planar or not: just tell you the sample size: S16, S32, float etc). To decode the audio, use AudioOutputUtil::DecodeAudio: http://code.mythtv.org/doxygen/classAudioOutputUtil.html#a508a76313cc17ef3fed2fe5c3b262f1c
[10:55am] jya_: somehow I have some memories about using that utility method in mythmusic… if not.. use it 
[10:57am] jya_: I can do it if you want… just do something like: AVSampleFormat format_pack = av_get_packed_sample_fmt(ctx->sample_fmt); and do you switch case on the format like you used to test for AV_SAMPLE_FMT_S16, ignore the planar format
[11:01am] jya_: i did make it use DecodeAudio.. so what you need is simply this: http://pastebin.com/H68C3Azr
[11:02am] jya_: this will handle all cases where you would get S24/S32 planar (which is what I would expect for codec like flac)

So basically, apply http://pastebin.com/H68C3Azr, and it should be all good


Thanks Jean-Yves that fixed it.

Paul H.
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