On Tue, 3 Aug 2010, Stephen Warren wrote: > A user has the following setup: > > A GPU which supports audio-over-HDMI. The codec supports sample rates > 32000 44100 48000 88200 96000 176400 192000 (from > /proc/asound/card1/codec#1). However, the user's TV supports only sample > rates 44100 48000 88200 (from /proc/asound/card1/eld*). > > When the user plays sound with sample rate 22050, they hear nothing. > Sound with sample rates supported by the TV works OK. > > My question: Is the HDA codec driver supposed to dynamically adjust its > list of supported sample rates based on the ELD content, or is the ALSA > library somehow supposed to detect the subset of rates supported in HW > and convert the sample rate in SW before sending the audio to the > driver? The driver must return the correct list of supported sample rates. Otherwise alsa-lib thinks that the invalid sample rate is supported in the hardware or driver. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
