Re: [pulseaudio-discuss] How to control the right and left channel for a specific application using CLI ?
Le 2020-11-04 18:28, Tanu Kaskinen a écrit : On Wed, 2020-11-04 at 14:56 +0100, 01iv...@labomedia.org wrote: Le 2020-11-04 01:17, Arun Raghavan a écrit : > On Tue, 3 Nov 2020, at 7:09 PM, 01iv...@labomedia.org wrote: > > Le 2020-11-03 23:49, Arun Raghavan a écrit : > > > On Tue, 3 Nov 2020, at 5:28 PM, 01iv...@labomedia.org wrote: > > > > Hello again, > > > > > > > > I want to know if there is a way, still in command line, to control > > > > the > > > > right and left volumes of an application. > > > > With Pulseaudio Volume Control, you can click on the lock icon related > > > > to a launched application, and two sliders appear to do so. > > > > Is it possible in CLI ? > > > > > > > > My goal is to run two applications on the same card, but to assign > > > > right > > > > channel for one and left for the other. > > > > > > > > Possible complication : the output of my application is in mono and > > > > with > > > > Pulseaudio Volume Control I don't get the two sliders if I click on > > > > the > > > > lock icon. > > > > > > You can use pactl to do this: > > > > > > pactl set-sink-input > > > ... > > > > > > You can look up the sink input index and channel map for channel order > > > with: > > > > > > pactl list sink-inputs > > > > > > -- Arun > > > > Hello Arun and thanks for the quick answer. > > > > It's exactly the command I was looking for. > > Unfortunately, as I thought, it doesn't work in my case because my > > output is in mono. > > Here's what I get: > > Failed to set volume: You tried to set volumes for 2 channels, whereas > > channel(s) supported = 1 > > > > I can't change the output of the software. > > Is there possibly a way to create a virtual stereo output from the > > mono > > Yup, check out module-remap-sink: > https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-remap-sink > > -- Arun Thank you, Your answer is good... I just asked the wrong question... Sorry... What could help me, in my case, is to remap the mono sink-input (the ouput of my application) into a stereo one, so that I could control the volume of each channel with set-sink-input. Maybe I missed something but module-remap-sink doesn't like to do it. I tried to use module-remap-source but "Name or index of the master source" seems to concern sink listed with "pacmd list-sinks" not "pactl list sink-inputs". Is there a solution to get a stereo sink-input from a mono one ? There's no way to change the channel map of a sink input. It sounds like you could load one remap-sink for the left channel and one remap- sink for the right channel, and point the application to the appropriate remap-sink. A BIG THANK YOU ! It perfectly works ! I'm going to try in few days with many more sound cards but is there a known limit to the number of sink which can be create this way ? Is 40 something completely crazy to think about ? Thanks again for your helps. °1ivier ___ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
Re: [pulseaudio-discuss] How to control the right and left channel for a specific application using CLI ?
Le 2020-11-04 01:17, Arun Raghavan a écrit : On Tue, 3 Nov 2020, at 7:09 PM, 01iv...@labomedia.org wrote: Le 2020-11-03 23:49, Arun Raghavan a écrit : > On Tue, 3 Nov 2020, at 5:28 PM, 01iv...@labomedia.org wrote: >> Hello again, >> >> I want to know if there is a way, still in command line, to control >> the >> right and left volumes of an application. >> With Pulseaudio Volume Control, you can click on the lock icon related >> to a launched application, and two sliders appear to do so. >> Is it possible in CLI ? >> >> My goal is to run two applications on the same card, but to assign >> right >> channel for one and left for the other. >> >> Possible complication : the output of my application is in mono and >> with >> Pulseaudio Volume Control I don't get the two sliders if I click on >> the >> lock icon. > > You can use pactl to do this: > > pactl set-sink-input > ... > > You can look up the sink input index and channel map for channel order > with: > > pactl list sink-inputs > > -- Arun Hello Arun and thanks for the quick answer. It's exactly the command I was looking for. Unfortunately, as I thought, it doesn't work in my case because my output is in mono. Here's what I get: Failed to set volume: You tried to set volumes for 2 channels, whereas channel(s) supported = 1 I can't change the output of the software. Is there possibly a way to create a virtual stereo output from the mono Yup, check out module-remap-sink: https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-remap-sink -- Arun Thank you, Your answer is good... I just asked the wrong question... Sorry... What could help me, in my case, is to remap the mono sink-input (the ouput of my application) into a stereo one, so that I could control the volume of each channel with set-sink-input. Maybe I missed something but module-remap-sink doesn't like to do it. I tried to use module-remap-source but "Name or index of the master source" seems to concern sink listed with "pacmd list-sinks" not "pactl list sink-inputs". Is there a solution to get a stereo sink-input from a mono one ? Thank you. °1ivier ___ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
Re: [pulseaudio-discuss] How to control the right and left channel for a specific application using CLI ?
Le 2020-11-03 23:49, Arun Raghavan a écrit : On Tue, 3 Nov 2020, at 5:28 PM, 01iv...@labomedia.org wrote: Hello again, I want to know if there is a way, still in command line, to control the right and left volumes of an application. With Pulseaudio Volume Control, you can click on the lock icon related to a launched application, and two sliders appear to do so. Is it possible in CLI ? My goal is to run two applications on the same card, but to assign right channel for one and left for the other. Possible complication : the output of my application is in mono and with Pulseaudio Volume Control I don't get the two sliders if I click on the lock icon. You can use pactl to do this: pactl set-sink-input ... You can look up the sink input index and channel map for channel order with: pactl list sink-inputs -- Arun Hello Arun and thanks for the quick answer. It's exactly the command I was looking for. Unfortunately, as I thought, it doesn't work in my case because my output is in mono. Here's what I get: Failed to set volume: You tried to set volumes for 2 channels, whereas channel(s) supported = 1 I can't change the output of the software. Is there possibly a way to create a virtual stereo output from the mono ? Thank you. °1ivier ___ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
[pulseaudio-discuss] How to control the right and left channel for a specific application using CLI ?
Hello again, I want to know if there is a way, still in command line, to control the right and left volumes of an application. With Pulseaudio Volume Control, you can click on the lock icon related to a launched application, and two sliders appear to do so. Is it possible in CLI ? My goal is to run two applications on the same card, but to assign right channel for one and left for the other. Possible complication : the output of my application is in mono and with Pulseaudio Volume Control I don't get the two sliders if I click on the lock icon. Thank you. °1ivier ___ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
Re: [pulseaudio-discuss] How to choose the sound card for an application using CLI ?
It works ! For the record, it works too with the index value gived with : pacmd list-sinks | egrep 'index|name:' I prefer this way because, as I've got multiple times the same card, the name (which depends on how many card I've got) could change if I remove one of them. The index is fixed in that case. Thanks a lot. °1ivier Le 2020-11-03 10:39, Tanu Kaskinen a écrit : On Tue, 2020-11-03 at 02:25 +0100, 01iv...@labomedia.org wrote: Hello, I want to run applications with specifics sound cards in command line on Ubuntu 20.04. I know it is graphically possible with Pulseaudio Volume Control which let me choose the card in a menu after the application is launched. But I want to use command lines so that I can automatize the process in a bash file (I've got ten sound cards and more to come). I've tried "pactl set-default-sink" but it changes the card for all the applications. I've looked in "man pulse-cli-syntax" but I didn't find what I'm looking for. I've also tried to use environment variables such as ALSA_CARD= and ALSA_PCM_CARD= without success. Is there a way to do what I want ? Maybe the PULSE_SINK environment variable will do the trick. The variable value is a sink name (to get a list of names, run "pactl list sinks | grep Name"). ___ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
[pulseaudio-discuss] How to choose the sound card for an application using CLI ?
Hello, I want to run applications with specifics sound cards in command line on Ubuntu 20.04. I know it is graphically possible with Pulseaudio Volume Control which let me choose the card in a menu after the application is launched. But I want to use command lines so that I can automatize the process in a bash file (I've got ten sound cards and more to come). I've tried "pactl set-default-sink" but it changes the card for all the applications. I've looked in "man pulse-cli-syntax" but I didn't find what I'm looking for. I've also tried to use environment variables such as ALSA_CARD= and ALSA_PCM_CARD= without success. Is there a way to do what I want ? Thank you. °1ivier ___ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
