Mr. Floppy wrote: > Hi, > > is it possible that the bit perfect issue comes from the following? > > .CHANNELS_MAX = 2 > > > Code: -------------------- > > > High resolution audio through HDMI: > Thanks to the suggestion from giantpopples from the squeezbox forum and the work by tghewett from the raspberry pi forum it is now possible to stream high resolution audio through the HDMI cable. Before the raspberry pi would down-sample everything to 48 kHz. But we modified the bcm2835-pcm.c and build the kernel. Now it is possible to stream 88.1 kHz and 96 kHz through HDMI. It might be possible even to use up to 192 kHZ, but I have not received any report on this. > Original: > .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, > .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, > .rate_min = 8000, > .rate_max = 48000, > .channels_min = 1, > .channels_max = 2, > > Changed to: > .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE, > .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_192000, > .rate_min = 8000, > .rate_max = 192000, > .channels_min = 1, > .channels_max = 2, > -------------------- > >
I just noticed that there has been a change in the raspberry firmware which allows for multichannel PCM via HDMI: https://github.com/raspberrypi/firmware/commit/b2dbc045084f27c10bb86425e4e8cffba51ca46f https://github.com/popcornmix/omxplayer/issues/29 I will try to build a new version of piCorePlayer with these changes, so maybe it will work better for you. Steen piCorePlayer a small player for the Raspberry Pi (25MB in RAM). Homepage: https://sites.google.com/site/picoreplayer/home and discussion: http://forums.slimdevices.com/showthread.php?97803-piCoPlayer-Squeezelite-on-Microcore-linux-An-embedded-OS-in-RAM-with-Squeezelite Squeezeboxserver on Voyage Linux 500 MB CF-card (read-only) http://forums.slimdevices.com/showthread.php?90581-HOW-TO-install-squeezeboxserver-on-very-small-Linux-(Voyage-linux) ------------------------------------------------------------------------ sbp's Profile: http://forums.slimdevices.com/member.php?userid=37237 View this thread: http://forums.slimdevices.com/showthread.php?t=97803 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
