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| * Only root can read the audio device - Add regular user to "audio" group | * Play mp3 in command line * Packages - alsa alsa-lib * List playback devices {{{ $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 |
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| * Volume control - "alsamixer", left/right, up/down to adjust the volume | $ cat /proc/asound/devices 1: : sequencer 2: [ 0- 7]: digital audio playback 3: [ 0- 3]: digital audio playback 4: [ 0- 2]: digital audio capture 5: [ 0- 1]: digital audio playback 6: [ 0- 0]: digital audio playback 7: [ 0- 0]: digital audio capture 8: [ 0- 3]: hardware dependent 9: [ 0- 2]: hardware dependent 10: [ 0] : control 33: : timer |
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| * Play mp3 in command line - ffplay from ffmpeg, play from sox with libsox-fmt-mp3 | }}} * Only root can read the audio device - Add regular user to "audio" group * Volume control - "alsamixer", left/right, up/down to adjust the volume * Play mp3 in command line - ffplay from ffmpeg, play from sox with libsox-fmt-mp3 |
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=== Reference === * http://alsa.opensrc.org/DigitalOut |
Issues
- Play mp3 in command line
- Packages - alsa alsa-lib
- List playback devices
$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 $ cat /proc/asound/devices 1: : sequencer 2: [ 0- 7]: digital audio playback 3: [ 0- 3]: digital audio playback 4: [ 0- 2]: digital audio capture 5: [ 0- 1]: digital audio playback 6: [ 0- 0]: digital audio playback 7: [ 0- 0]: digital audio capture 8: [ 0- 3]: hardware dependent 9: [ 0- 2]: hardware dependent 10: [ 0] : control 33: : timer
- Only root can read the audio device - Add regular user to "audio" group
- Volume control - "alsamixer", left/right, up/down to adjust the volume
- Play mp3 in command line - ffplay from ffmpeg, play from sox with libsox-fmt-mp3
$ ffplay file.mp3 $ play file.mp3