On Wed, Jun 29, 2011 at 10:06 PM, Tanu Kaskinen <[email protected]> wrote:
> These questions seem to have gone unanswered... > Thanks Tanu :) for the reply. I understand you and other senior members are busy with new release activities and patch integrations, as seen from group activity, thanks again for the reply and clarifications :) one question here is, How to find out what sampling-rate that an particular sink (e.g ALSA) is configured to ? or in other words , how PA knows sampling-rate configuration of an sink (any sink API's ? )? so that PA starts re-sampling to that particular sample-rate. Best Regards, Himanshu > > On Wed, 2011-06-22 at 17:47 +0530, Himanshu Chug wrote: > > Hi > > > > 1. I am trying to understand the how PA mixes two different freq streams, > > say I am playing 2 playback streams one is 8000hz wav and other of 44100 > hz > > wav at the same time ? how is re-sampling happens in PA level ? at what > freq > > PA re-sample given streams in this e.g before mixing and rendering on > > device? > > Each sink has some static sample rate configured. When the sink requests > more data from the sink inputs, the input data is resampled to the > sink's sample rate. > > > 2. Which part of PA code/ module is doing re-sampling and mixing here? > > When the sink implementation wants more data from the inputs, it calls > pa_sink_render() or some of its variants. > > > 3. I want to mute/unmute sink inputs on the fly ( i.e when the stream is > > running/playing), what PA API's can be used to achieve this ? > > Client api or internal server api? For clients there's > pa_context_set_sink_input_mute(). The internal api has > pa_sink_input_set_mute(). > > -- > Tanu > > _______________________________________________ > pulseaudio-discuss mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss >
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