Speed up SniffMidi() by parsing the initial bytes of the header
SniffMidi() was creating a MidiEngine() instance which in turn was
using a WatchDog timer to abort if the operation took longer than
10 seconds. In some cases, SniffMidi() was consuming more than 10 seconds.
This is now optimized by parsing a few initial bytes to identify
different types of midi files.
Bug: 359920208
Test: atest CtsMediaPlayerTestCases \
CtsMediaExtractorTestCases \
CtsMediaAudioTestCases:MidiSoloTest \
CtsMediaAudioTestCases:SoundPoolMidiTest \
CtsMediaV2TestCases:ExtractorTest \
CtsMediaV2TestCases:ExtractorUnitTest
Change-Id: Ibf1e922d6de32ab6f2fbd8178843603a9bf72100
5 files changed