Issue with audio / video

[jaeminkang2]

Hi arpi team,

I would like ask about the issue of audio/video. My current rpi4 status is android 10 (r35) completed a boot success.

I've already seen your inquiry about the same issue, and I'm waiting for it. However, I'm checking for the audio issue to solve, but it's hard.

I know the questions below are stupid, but...

1. Below is logcat log when mp3 file is operated as vlc player.

   06-03 00:02:23.124 1162 2304 E audio_hw_primary: pcm_open(out) failed: cannot open device '/dev/snd/pcmC0D1p': No such file or directory 06-03 00:02:24.772 1162 2304 I chatty : uid=1041(audioserver) writer identical 157 lines 06-03 00:02:24.782 1162 2304 E audio_hw_primary: pcm_open(out) failed: cannot open device '/dev/snd/pcmC0D1p': No such file or directory 06-03 00:02:24.793 1647 2300 W VLC : [8038fab0/8fc] libvlc audio output: playback too late (65145): up-sampling 06-03 00:02:24.793 1162 2304 E audio_hw_primary: pcm_open(out) failed: cannot open device '/dev/snd/pcmC0D1p': No such file or directory 06-03 00:02:24.804 1162 2304 I chatty : uid=1041(audioserver) writer identical 1 line 06-03 00:02:24.814 1162 2304 E audio_hw_primary: pcm_open(out) failed: cannot open device '/dev/snd/pcmC0D1p': No such file or directory 06-03 00:02:24.820 1647 2300 D VLC : [8061aeb0/8fc] libvlc audio resampler: Using 'vr32' engine 06-03 00:02:24.825 1162 2304 E audio_hw_primary: pcm_open(out) failed: cannot open device '/dev/snd/pcmC0D1p': No such file or directory

[jaeminkang2]

Hi..

I solved the issue. I changed to pcm_card, pcm_device as shown in /dev/snd. The framework volume api are not work, but audio is output.

If I will solve the volume issue, I will close this issue .

[jaeminkang2]

Hi arpi team,

I have additional questions. When I modified it to PCM_CARD 1 / PCM_DEVICE 0, the sound was output on the earphone. However, It do output too small sound and it can not control the volume.

Today I checked your "hardware_arpi/audio" commit. After modifying to PCM_CARD 0, PCM_DEVICE 0, no sound is output from the audio_jack (earphone). I would like to ask if additional modifications are needed. Can you explain a little about the related modifications?

[peyo-hd]

sync kernel/arpi/ again, since it's updated to 5.4.44

[jaeminkang2]

I can hear the audio well. However, the volume is not working yet. ^^;

[peyo-hd]

The volume control issue is fixed. Try sync kernel/arpi again, it's now 5.4.45.

Fixed point is bcm2711_defconfig : CONFIG_ION_SYSTEM_HEAP=y

[jaeminkang2]

Thank you for your update. I will redownload source and check it. Thank you again for your support and update.

I have a add question. I tried to play mp4 on a normal app(register system app & path is vendor folder) using media player. However, log like below is shown and does not play.

dmesg log [ 288.094390] audit: rate limit exceeded [ 288.118468] type=1400 audit(1592261775.197:147): avc: denied { getattr } for comm="RenderThread" path="/vendor/lib/hw/gralloc.rpi4.so" dev="mmcblk0p3" ino=277 scontext=u:r:system_server:s0 tcontext=u:object_r:vendor_file:s0 tclass=file permissive=1 [ 288.143123] type=1400 audit(1592261775.197:148): avc: denied { read } for comm="RenderThread" name="gralloc.rpi4.so" dev="mmcblk0p3" ino=277 scontext=u:r:system_server:s0 tcontext=u:object_r:vendor_file:s0 tclass=file permissive=1 [ 288.167722] type=1400 audit(1592261775.197:148): avc: denied { read } for comm="RenderThread" name="gralloc.rpi4.so" dev="mmcblk0p3" ino=277 scontext=u:r:system_server:s0 tcontext=u:object_r:vendor_file:s0 tclass=file permissive=1 [ 288.192625] type=1400 audit(1592261775.197:149): avc: denied { open } for comm="RenderThread" path="/vendor/lib/hw/gralloc.rpi4.so" dev="mmcblk0p3" ino=277 scontext=u:r:system_server:s0 tcontext=u:object_r:vendor_file:s0 tclass=file permissive=1 [ 288.217988] type=1400 audit(1592261775.197:149): avc: denied { open } for comm="RenderThread" path="/vendor/lib/hw/gralloc.rpi4.so" dev="mmcblk0p3" ino=277 scontext=u:r:system_server:s0 tcontext=u:object_r:vendor_file:s0 tclass=file permissive=1 [ 288.245873] type=1400 audit(1592261775.197:150): avc: denied { read } for comm="RenderThread" name="uevent" dev="sysfs" ino=3559 scontext=u:r:system_server:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1 [ 288.269772] type=1400 audit(1592261775.197:150): avc: denied { read } for comm="RenderThread" name="uevent" dev="sysfs" ino=3559 scontext=u:r:system_server:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1 [ 288.292371] type=1400 audit(1592261775.197:151): avc: denied { open } for comm="RenderThread" path="/sys/devices/platform/v3dbus/fec00000.v3d/uevent" dev="sysfs" ino=3559 scontext=u:r:system_server:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1

I checked the content, and... I'm not sure it is a Selinux issue. I don't know how to check after that. I'm sorry for bothering you. I'll look for a little more. ^^;

[peyo-hd]

Added guidance for Video decoder in following link :

https://github.com/android-rpi/device_arpi_rpi4/wiki/Android-10-:-patch-framework-source

[jaeminkang2]

Thanks for your guidance. I will check it soon.

[jaeminkang2]

I have one more thing..

In your guide... In the SoftwareRender.cpp file... 'OMX_TI_COLOR_FormatYUV420Planar' not found.

Do you mean 'OMX_COLOR_FormatYUV420Planar'?

[peyo-hd]

'OMX_TI_COLOR_FormatYUV420Planar' was typo.

I have corrected to 'OMX_COLOR_FormatYUV420Planar'.

Thanks for finding it.

[jaeminkang2]

Hi I solved most of my media related issues in the latest git yesterday. And also the my app using media player was also normal output. Thanks again peyo & arpi team.

[Bauuuuu]

something more changed? PCM_CARD/PCM_DEVICE didn't have any effect? i tried all combinations and still had audio in audio jack. I was hoping for hdmi audio

[Bauuuuu]

something more changed? PCM_CARD/PCM_DEVICE didn't have any effect? i tried all combinations and still had audio in audio jack. I was hoping for hdmi audio

@peyo-hd any hints?

[hoangthanh49]

hi Bau Did you try to set hdmi_drive=2 on config.txt? How about test result?

[Bauuuuu]

@hoangthanh49 indeed i tried changes in config.txt too hdmi_drive=2 and hdmi_force_edid_audio=1 and combinations of it although the result was same. No HDMI audio but in audio-jack

[jaeminkang2]

Hello Is it possible to print audio with hdmi? May I ask for support for this part?