Hi all, I am investigating but someone may have seen this already?
Developing a custom audio driver but getting started with the null audio device and NXplayer. I have saved a WAV file to the smartfs and it appears to be valid. In case relevant I did this by saving the wav file to a header file as an unsigned char array and writing this our programmatically to the file system to avoid messing around with memory sticks/usb/rndis/anything "clever" at this time! When I try and play it with NXplayer, it fails while trying to enqueue the buffer and behaves as if the file is not open (EBADF) but - so far, as I step through - the file does seem to be opened OK: audio_ioctl: AUDIOIOC_ENQUEUEBUFFER pcm_enqueuebuffer: Received buffer 0x20098468, streaming=0 pcm_enqueuebuffer: curbyte=0 nbytes=8192 nmaxbytes=8192 bytesleft=8192 pcm_enqueuebuffer: Begin streaming: apb=0x20098468 curbyte=0 nbytes=8192 pcm_enqueuebuffer: Pass to lower enqueuebuffer: apb=0x20098468 curbyte=0 nbytes=8192 null_enqueuebuffer: apb=0x20098468 curbyte=0 nbytes=8192 null_enqueuebuffer: ERROR: file_mq_send failed: -9 null_enqueuebuffer: Return OK audio_callback: Entry audio_complete: Entry nxplayer_enqueuebuffer: ERROR: AUDIOIOC_ENQUEUEBUFFER ioctl failed: 22 Full debug syslog output in case relevant: NuttShell (NSH) NuttX-12.0.0 nsh> nxplayer NxPlayer version 1.05 h for commands, q to exit nxplayer> play drumroll.wav nxplayer_playinternal: ============================== nxplayer_playinternal: Playing file drumroll.wav nxplayer_playinternal: ============================== audio_open: crefs: 0 audio_ioctl: cmd: 4097 arg: 537490888 audio_ioctl: AUDIOIOC_GETCAPS: Device=0 null_getcaps: type=0 null_getcaps: Return 16 audio_ioctl: cmd: 4098 arg: 0 audio_ioctl: AUDIOIOC_RESERVE pcm_reserve: Defer to lower reserve null_reserve: Return OK audio_ioctl: cmd: 4106 arg: 537491212 audio_ioctl: Forwarding unrecognized cmd: 4106 arg: 537491212 pcm_ioctl: Defer to lower ioctl, cmd=4106 arg=537491212 null_ioctl: cmd=4106 arg=537491212 null_ioctl: AUDIOIOC_GETBUFFERINFO: null_ioctl: Return OK audio_ioctl: cmd: 4110 arg: 4 audio_ioctl: AUDIOIOC_REGISTERMQ nxplayer_playthread: Entrynxplayer> audio_ioctl: cmd: 4106 arg: 537494496 audio_ioctl: Forwarding unrecognized cmd: 4106 arg: 537494496 pcm_ioctl: Defer to lower ioctl, cmd=4106 arg=537494496 null_ioctl: cmd=4106 arg=537494496 null_ioctl: AUDIOIOC_GETBUFFERINFO: null_ioctl: Return OK audio_ioctl: cmd: 4107 arg: 537494500 audio_ioctl: AUDIOIOC_ALLOCBUFFER audio_ioctl: cmd: 4107 arg: 537494500 audio_ioctl: AUDIOIOC_ALLOCBUFFER audio_ioctl: cmd: 4107 arg: 537494500 audio_ioctl: AUDIOIOC_ALLOCBUFFER audio_ioctl: cmd: 4107 arg: 537494500 audio_ioctl: AUDIOIOC_ALLOCBUFFER audio_ioctl: cmd: 4109 arg: 537494448 audio_ioctl: AUDIOIOC_ENQUEUEBUFFER pcm_enqueuebuffer: Received buffer 0x20098468, streaming=0 pcm_enqueuebuffer: curbyte=0 nbytes=8192 nmaxbytes=8192 bytesleft=8192 pcm_enqueuebuffer: Begin streaming: apb=0x20098468 curbyte=0 nbytes=8192 pcm_enqueuebuffer: Pass to lower enqueuebuffer: apb=0x20098468 curbyte=0 nbytes=8192 null_enqueuebuffer: apb=0x20098468 curbyte=0 nbytes=8192 null_enqueuebuffer: ERROR: file_mq_send failed: -9 null_enqueuebuffer: Return OK audio_callback: Entry audio_complete: Entry nxplayer_enqueuebuffer: ERROR: AUDIOIOC_ENQUEUEBUFFER ioctl failed: 22 nxplayer_playthread: 0 buffers queued, running=1 streaming=0 nxplayer_playthread: Playing... nxplayer_playthread: Play complete. outstanding=0 nxplayer_playthread: Clean-up and exit nxplayer_playthread: Freeing buffers audio_ioctl: cmd: 4108 arg: 537494500 audio_ioctl: AUDIOIOC_FREEBUFFER audio_ioctl: cmd: 4108 arg: 537494500 audio_ioctl: AUDIOIOC_FREEBUFFER audio_ioctl: cmd: 4108 arg: 537494500 audio_ioctl: AUDIOIOC_FREEBUFFER audio_ioctl: cmd: 4108 arg: 537494500 audio_ioctl: AUDIOIOC_FREEBUFFER audio_ioctl: cmd: 4111 arg: 4 audio_ioctl: AUDIOIOC_UNREGISTERMQ audio_ioctl: cmd: 4099 arg: 0 audio_ioctl: AUDIOIOC_RELEASE pcm_release: Defer to lower release audio_close: crefs: 1 audio_close: calling shutdown pcm_shutdown: Defer to lower shutdown null_shutdown: Return OK nxplayer_playthread: Exit
