[Android] Light Sound-system

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Extract + Decode

Techno

• OpenSL
• MediaCodec
• FFmpeg

Benchmark

Result are avg on 2, 3 launches... Extract and decode from internal storage the tracks:

• app/src/main/assets/over_the_horizon.aac
• app/src/main/assets/over_the_horizon.mp3
• app/src/main/assets/over_the_horizon.wav

Benchmark (with avcodec, avformat, avutil, swresample)

Pixel 8.0.0 op3	FFmpeg 1 Native thread	FFmpeg 1 Java prio thread
AAC	00.9s	1.00s
MP3	1.18s	1.23s
WAV	0.57s	0.60s

Benchmark deprecated (old libffmpeg.so files)

Device \ Techno on AAC	OpenSL 1 Native thread	MediaCodec 1 Native thread	FFmpeg 1 Java prio thread
Pixel 8.0.0 op3	90.0s	20.0s	01.0s
Nexus 5X 8.0.0 op3	118 s	42.0s	04.2s
Samsung gs7 SM-G930T 7.0	116 s	27.0s	01.1s
Samsung tab s2 SM-T810 6.0.1	05.4s	04.3s	01.9s
Nexus 5 5.1.1	05.7s	/	03.2s
Wiko FEVER 6.0	/	/	/

Device \ Techno on MP3	OpenSL 1 Native thread	MediaCodec 1 Native thread	FFmpeg 1 Java prio thread
Pixel 8.0.0 op3	75.0s	18.0s	01.5s
Nexus 5X 8.0.0 op3	99.0s	30.0s	01.9s
Samsung gs7 SM-G930T 7.0	71.0s	35.0s	01.5s
Samsung tab s2 SM-T810 6.0.1	04.9s	03.6s	02.5s
Nexus 5 5.1.1	04.5s	07.5s	06.0s
Wiko FEVER 6.0	crash	04.0s	03.0s

Device \ Techno on WAV	OpenSL 1 Native thread	MediaCodec 1 Native thread	FFmpeg 1 Java prio thread
Pixel 8.0.0 op3	00.3s	01.9s	00.7s
Nexus 5X 8.0.0 op3	00.5s	01.7s	02.7s
Samsung gs7 SM-G930T 7.0	01.9s	05.5s	00.8s
Samsung tab s2 SM-T810 6.0.1	00.1s	01.4s	01.4s
Nexus 5 5.1.1	00.3s	01.0s	02.2s
Wiko FEVER 6.0	/	s	s

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Player

• OpenSL
• AAudio API >= 26

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Source

• https://github.com/bowserf/Mini-sound-system
• https://github.com/googlesamples/android-audio-high-performance/tree/master/aaudio