Media Foundation plugin on Windows 7 fails to load M4A

[RJ Skerry-Ryan]

From mixxx.log after trying to load a test M4A I found on the Internet:

Debug: [Main]: Dynamically loaded "C:/Program Files (x86)/Mixxx/plugins/soundsource/soundsourcemediafoundation.dll"
Debug: [Main]: m4a
Debug: [Main]: mp4
Debug: [Main]: Plugin supports: m4a
Debug: [Main]: Plugin supports: mp4
Debug: [Main]: Failed to dynamically load "C:/Program Files (x86)/Mixxx/plugins/soundsource/soundsourcemediafoundation.exp" "Cannot load library C:/Program Files (x86)/Mixxx/plugins/soundsource/soundsourcemediafoundation.exp: "
Debug: [Main]: Failed to dynamically load "C:/Program Files (x86)/Mixxx/plugins/soundsource/soundsourcemediafoundation.lib" "Cannot load library C:/Program Files (x86)/Mixxx/plugins/soundsource/soundsourcemediafoundation.lib: "

.....

Debug: []: Getting SoundSource plugin object for "m4a"
Warning: []: SSMF: failed to set media type
Debug: []: SSMF: Duration: 37
Fatal: []: ASSERT: "bufferLength * kNumChannels <= m_leftoverBufferSize" in file plugins\soundsourcemediafoundation\soundsourcemediafoundation.cpp, line 264
Warning: []: QObject::killTimer: timers cannot be stopped from another thread
Warning: []: QObject::killTimers: timers cannot be stopped from another thread

[RJ Skerry-Ryan (rryan)]

Test file is here: http://www.nintendo.com/consumer/downloads/test.zip

[RJ Skerry-Ryan (rryan)]

And the plugin DLL I built (for 32-bit) is attached.

[RJ Skerry-Ryan (rryan)]

This file seems to trigger an assertion now:

Fatal: []: ASSERT: "m_nextFrame >= bufferPosition" in file plugins\soundsourcemediafoundation\soundsourcemediafoundation.cpp, line 248

[RJ Skerry-Ryan (rryan)]

(It happens on track load)

[William Good (bkgood)]

WMP 12 uses Media Foundation to play AAC and it's unable to play this Eagles sample, so I think we're SOL on that one (unless we figure out how to use MF better than Microsoft). I'll try to figure out how to get it to fail more peacefully, though.

I committed a change that keeps the failure to load thing from triggering an assert, you now just get a "track could not be loaded" dialog as normal. Media Foundation is able to decode the Nintendo file though, so I'm going to work on that yet.

[RJ Skerry-Ryan (rryan)]

Semi-broken files are now handled in a semi-reasonable way.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/6067