[pulseaudio-discuss] Routing sink to source
Zoltán Szabó
zoell at zoell.us
Sun Nov 18 19:36:34 UTC 2018
Hi Everyone,
I still could not figure out why the why app01 sink routed to app01 source
and also cannot find any workaround for this.
Any idea? I am thinking to disable a program to access a specific source or
sink.
Thanks,
Zoltan
On Tue, Nov 13, 2018 at 12:20 AM Zoltán Szabó <zoell at zoell.us> wrote:
> Hi Daniel,
>
> Thanks for your advice but as I can see this move source etc works only
> after the device is opened and audio is flowing which I don't know when it
> will happen.
>
> I made some progress. Now the solution works with one problem.
>
> This is my configuration now:
> pactl load-module module-null-sink sink_name=pa_sink_app01
> pactl load-module module-virtual-source source_name=pa_source_app01
> uplink_sink=pa_sink_app02
>
> And I start my apps like this:
> PULSE_SINK=pa_sink_app01 PULSE_SOURCE=pa_source_app01 ./app01
> PULSE_SINK=pa_sink_app02 PULSE_SOURCE=pa_sink_app01.monitor ./app02
>
> The goal is to route app01 source to app02 sink. And route app02 source to
> app01 sink.
> Note: for app02, I can use the sink monitor as a source, but app01 (chrome
> browser) won't be able to open the app02's sink's monitor, no idea why.
> Need to work around it so I added a virtual source which can be opened by
> app01.
>
> This scenario is fully working with one problem. The audio is also routed
> back from app01 sink to app01 source, which I don't need. Interestingly
> this route stops after like 10 seconds, just like an echo cancellation
> kicks in somewhere.
>
> Wondering if this is logically correct and it is just me who cannot see
> why app01 sink routed to app01 source.
>
> Here are the created sinks and sources:
>
> *# gosu pulseaudio pacmd list-sinks *
> 2 sink(s) available.
> * index: 0
> name: <pa_sink_app01>
> driver: <module-null-sink.c>
> flags: DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
> state: IDLE
> suspend cause:
> priority: 1000
> volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% /
> 0.00 dB
> balance 0.00
> base volume: 65536 / 100% / 0.00 dB
> volume steps: 65537
> muted: no
> current latency: 2.48 ms
> max request: 0 KiB
> max rewind: 0 KiB
> monitor source: 0
> sample spec: s16le 2ch 44100Hz
> channel map: front-left,front-right
> Stereo
> used by: 0
> linked by: 1
> configured latency: 5.00 ms; range is 0.50 .. 2000.00 ms
> module: 2
> properties:
> device.description = "Null Output"
> device.class = "abstract"
> device.icon_name = "audio-card"
> index: 1
> name: <pa_sink_app02>
> driver: <module-virtual-source.c>
> flags: DECIBEL_VOLUME FLAT_VOLUME
> state: IDLE
> suspend cause:
> priority: 1000
> volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% /
> 0.00 dB
> balance 0.00
> base volume: 65536 / 100% / 0.00 dB
> volume steps: 65537
> muted: no
> current latency: 0.00 ms
> max request: 0 KiB
> max rewind: 0 KiB
> monitor source: 2
> sample spec: float32le 2ch 44100Hz
> channel map: front-left,front-right
> Stereo
> used by: 0
> linked by: 0
> fixed latency: 250.00 ms
> module: 3
> properties:
> device.master_device = "pa_sink_app01.monitor"
> device.class = "uplink sink"
> device.uplink_sink.name = "pa_sink_app02"
> device.description = "Uplink Sink pa_sink_app02 on Monitor of Null Output"
> device.icon_name = "audio-card"
>
>
> *# pacmd list-sources*
> 3 source(s) available.
> index: 0
> name: <pa_sink_app01.monitor>
> driver: <module-null-sink.c>
> flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
> state: RUNNING
> suspend cause:
> priority: 1000
> volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% /
> 0.00 dB
> balance 0.00
> base volume: 65536 / 100% / 0.00 dB
> volume steps: 65537
> muted: no
> current latency: 0.00 ms
> max rewind: 344 KiB
> sample spec: s16le 2ch 44100Hz
> channel map: front-left,front-right
> Stereo
> used by: 1
> linked by: 1
> configured latency: 2000.00 ms; range is 0.50 .. 2000.00 ms
> monitor_of: 0
> module: 2
> properties:
> device.description = "Monitor of Null Output"
> device.class = "monitor"
> device.icon_name = "audio-input-microphone"
> * index: 1
> name: <pa_source_app01>
> driver: <module-virtual-source.c>
> flags: HW_MUTE_CTRL LATENCY DYNAMIC_LATENCY
> state: IDLE
> suspend cause:
> priority: 1000
> volume: front-left: 65536 / 100%, front-right: 65536 / 100%
> balance 0.00
> base volume: 65536 / 100%
> volume steps: 65537
> muted: no
> current latency: 0.00 ms
> max rewind: 172 KiB
> sample spec: float32le 2ch 44100Hz
> channel map: front-left,front-right
> Stereo
> used by: 0
> linked by: 0
> configured latency: 2000.00 ms; range is 0.50 .. 2000.00 ms
> module: 3
> properties:
> device.master_device = "pa_sink_app01.monitor"
> device.class = "filter"
> device.vsource.name = "pa_source_app01"
> device.description = "Virtual Source pa_source_app01 on Monitor of Null
> Output"
> device.icon_name = "audio-input-microphone"
> index: 2
> name: <pa_sink_app02.monitor>
> driver: <module-virtual-source.c>
> flags: DECIBEL_VOLUME
> state: IDLE
> suspend cause:
> priority: 1000
> volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% /
> 0.00 dB
> balance 0.00
> base volume: 65536 / 100% / 0.00 dB
> volume steps: 65537
> muted: no
> current latency: 0.00 ms
> max rewind: 0 KiB
> sample spec: float32le 2ch 44100Hz
> channel map: front-left,front-right
> Stereo
> used by: 0
> linked by: 0
> fixed latency: 250.00 ms
> monitor_of: 1
> module: 3
> properties:
> device.description = "Monitor of Uplink Sink pa_sink_app02 on Monitor of
> Null Output"
> device.class = "monitor"
> device.icon_name = "audio-input-microphone"
>
>
> And here are some logs from pulseaudio for a media comes in and goes out
> between app01 and app02:
>
> When I first start app01:
> ( 93.448| 59.154) I: [pulseaudio] socket-server.c: TCP connection
> accepted by tcpwrap.
> ( 93.448| 0.000) I: [pulseaudio] client.c: Created 2 "Native client
> (TCP/IP client from 127.0.0.1:59296)"
> ( 93.449| 0.000) D: [pulseaudio] protocol-native.c: Protocol version:
> remote 29, local 29
> ( 93.449| 0.000) D: [pulseaudio] protocol-native.c: SHM possible: no
> ( 93.449| 0.000) D: [pulseaudio] protocol-native.c: Negotiated SHM: no
> ( 95.290| 1.841) I: [pulseaudio] socket-server.c: TCP connection
> accepted by tcpwrap.
> ( 95.290| 0.000) I: [pulseaudio] client.c: Created 3 "Native client
> (TCP/IP client from 127.0.0.1:59314)"
> ( 95.291| 0.000) D: [pulseaudio] protocol-native.c: Protocol version:
> remote 29, local 29
> ( 95.291| 0.000) D: [pulseaudio] protocol-native.c: SHM possible: no
> ( 95.291| 0.000) D: [pulseaudio] protocol-native.c: Negotiated SHM: no
> ( 95.292| 0.001) D: [pulseaudio] sink-input.c: Negotiated format: pcm,
> format.sample_format = "\"float32le\"" format.rate = "44100"
> format.channels = "1" format.channel_map = "\"mono\""
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c: Trying to change sample
> rate
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c: Rate changed to 44100 Hz
> ( 95.292| 0.000) I: [pulseaudio] resampler.c: Forcing resampler 'copy',
> because of fixed, identical sample rates.
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: Channel matrix:
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: I00
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: +------
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: O00 | 1.000
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: O01 | 1.000
> ( 95.292| 0.000) I: [pulseaudio] remap_sse.c: Using SSE2 mono to stereo
> remapping
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: Resampler:
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: rate 44100 -> 44100
> (method copy)
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: format float32le ->
> s16le (intermediate s16le)
> ( 95.292| 0.000) D: [pulseaudio] resampler.c: channels 1 -> 2
> (resampling 1)
> ( 95.292| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
> ( 95.292| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c: Created input 0
> "Playback" on pa_sink_app01 with sample spec float32le 1ch 44100Hz and
> channel map mono
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c:
> application.icon_name = "chromium-browser"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c: media.name =
> "Playback"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c: application.name =
> "Chromium"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c: native-protocol.peer
> = "TCP/IP client from 127.0.0.1:59314"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c:
> native-protocol.version = "29"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c:
> application.process.id = "298"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c:
> application.process.user = "root"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c:
> application.process.host = "49132fc42dd8"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c:
> application.process.binary = "chrome"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c: application.language
> = "C"
> ( 95.292| 0.000) I: [pulseaudio] sink-input.c:
> application.process.machine_id = "3d6ff2f75c7d3ae927580249a28e7e05"
> ( 95.292| 0.000) I: [pulseaudio] protocol-native.c: Requested
> tlength=69.66 ms, minreq=11.61 ms
> ( 95.292| 0.000) D: [pulseaudio] protocol-native.c: Adjust latency mode
> enabled, configuring sink latency to half of overall latency.
> ( 95.292| 0.000) D: [pulseaudio] protocol-native.c: Requested
> latency=23.22 ms, Received latency=23.22 ms
> ( 95.292| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=4194304, tlength=8192, base=4, prebuf=6148, minreq=2048
> maxrewind=0
> ( 95.292| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=4194304, tlength=8192, base=4, prebuf=6148, minreq=2048
> maxrewind=0
> ( 95.292| 0.000) I: [pulseaudio] protocol-native.c: Final latency 69.66
> ms = 23.22 ms + 2*11.61 ms + 23.22 ms
> ( 95.293| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 95.293| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 95.293| 0.000) D: [null-sink] sink-input.c: Requesting rewind due to
> uncorking
> ( 95.293| 0.000) D: [null-sink] module-null-sink.c: Requested to rewind
> 4096 bytes.
> ( 95.293| 0.000) D: [null-sink] sink.c: Processing rewind...
> ( 95.294| 0.000) D: [null-sink] source.c: Processing rewind...
> ( 95.294| 0.000) D: [null-sink] source-output.c: Have to rewind 8192
> bytes on implementor.
> ( 95.294| 0.000) D: [null-sink] module-null-sink.c: Rewound 4096 bytes.
> ( 96.619| 1.325) D: [pulseaudio] source-output.c: Negotiated format:
> pcm, format.sample_format = "\"s16le\"" format.rate = "44100"
> format.channels = "2" format.channel_map = "\"front-left,front-right\""
> ( 96.620| 0.000) I: [pulseaudio] source-output.c: Trying to change
> sample rate
> ( 96.620| 0.000) I: [pulseaudio] source-output.c: Rate changed to 44100
> Hz
> ( 96.620| 0.000) I: [pulseaudio] resampler.c: Forcing resampler 'copy',
> because of fixed, identical sample rates.
> ( 96.620| 0.000) D: [pulseaudio] resampler.c: Resampler:
> ( 96.620| 0.000) D: [pulseaudio] resampler.c: rate 44100 -> 44100
> (method copy)
> ( 96.620| 0.000) D: [pulseaudio] resampler.c: format float32le ->
> s16le (intermediate s16le)
> ( 96.620| 0.000) D: [pulseaudio] resampler.c: channels 2 -> 2
> (resampling 2)
> ( 96.620| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=33554432, tlength=0, base=8, prebuf=0, minreq=1 maxrewind=0
> ( 96.620| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=33554432, tlength=33554432, base=8, prebuf=0, minreq=8 maxrewind=0
> ( 96.620| 0.000) I: [pulseaudio] source-output.c: Created output 1
> "RecordStream" on pa_source_app01 with sample spec s16le 2ch 44100Hz and
> channel map front-left,front-right
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> application.icon_name = "chromium-browser"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c: media.name =
> "RecordStream"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c: application.name
> = "Chrome input"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> native-protocol.peer = "TCP/IP client from 127.0.0.1:59296"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> native-protocol.version = "29"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> application.process.id = "298"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> application.process.user = "root"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> application.process.host = "49132fc42dd8"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> application.process.binary = "chrome"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> application.language = "C"
> ( 96.620| 0.000) I: [pulseaudio] source-output.c:
> application.process.machine_id = "3d6ff2f75c7d3ae927580249a28e7e05"
> ( 96.620| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=4194304, tlength=0, base=4, prebuf=1, minreq=0 maxrewind=0
> ( 96.620| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=4194304, tlength=4194304, base=4, prebuf=4, minreq=4 maxrewind=0
> ( 96.620| 0.000) I: [pulseaudio] protocol-native.c: Final latency 9.99
> ms = 4.99 ms + 5.00 ms
> ( 102.006| 5.386) I: [pulseaudio] source-output.c: Freeing output 1
> "RecordStream"
> ( 105.302| 3.295) D: [null-sink] sink-input.c: Requesting rewind due to
> corking
> ( 105.303| 0.000) D: [null-sink] module-null-sink.c: Requested to rewind
> 4096 bytes.
> ( 105.303| 0.000) D: [null-sink] sink.c: Processing rewind...
> ( 105.303| 0.000) D: [null-sink] sink-input.c: Have to rewind 3744 bytes
> on render memblockq.
> ( 105.303| 0.000) D: [null-sink] sink-input.c: Have to rewind 3744 bytes
> on implementor.
> ( 105.303| 0.000) D: [null-sink] source.c: Processing rewind...
> ( 105.303| 0.000) D: [null-sink] source-output.c: Have to rewind 7488
> bytes on implementor.
> ( 105.303| 0.000) D: [null-sink] module-null-sink.c: Rewound 3744 bytes.
> ( 105.303| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 105.303| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 110.304| 5.001) D: [null-sink] module-null-sink.c: Requested to rewind
> 352800 bytes.
> ( 110.304| 0.000) D: [null-sink] sink.c: Processing rewind...
> ( 110.304| 0.000) I: [pulseaudio] sink-input.c: Freeing input 0
> "Playback"
> ( 110.304| 0.000) I: [pulseaudio] client.c: Freed 3 "Chromium"
> ( 110.304| 0.000) D: [null-sink] source.c: Processing rewind...
> ( 110.304| 0.000) D: [null-sink] source-output.c: Have to rewind 4840
> bytes on implementor.
> ( 110.304| 0.000) D: [null-sink] module-null-sink.c: Rewound 2420 bytes.
> ( 110.304| 0.000) I: [pulseaudio] protocol-native.c: Connection died.
>
>
> And later when I start the media, so app02 is OK, but app01 plays the sink
> back to it's own source too:
> ( 140.591| 26.491) I: [pulseaudio] socket-server.c: TCP connection
> accepted by tcpwrap.
> ( 140.591| 0.000) I: [pulseaudio] client.c: Created 10 "Native client
> (TCP/IP client from 127.0.0.1:59666)"
> ( 140.591| 0.000) D: [pulseaudio] protocol-native.c: Protocol version:
> remote 29, local 29
> ( 140.591| 0.000) D: [pulseaudio] protocol-native.c: SHM possible: no
> ( 140.591| 0.000) D: [pulseaudio] protocol-native.c: Negotiated SHM: no
> ( 140.591| 0.000) D: [pulseaudio] sink-input.c: Negotiated format: pcm,
> format.sample_format = "\"float32le\"" format.rate = "44100"
> format.channels = "1" format.channel_map = "\"mono\""
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c: Trying to change sample
> rate
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c: Rate changed to 44100 Hz
> ( 140.591| 0.000) I: [pulseaudio] resampler.c: Forcing resampler 'copy',
> because of fixed, identical sample rates.
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: Channel matrix:
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: I00
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: +------
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: O00 | 1.000
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: O01 | 1.000
> ( 140.591| 0.000) I: [pulseaudio] remap_sse.c: Using SSE2 mono to stereo
> remapping
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: Resampler:
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: rate 44100 -> 44100
> (method copy)
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: format float32le ->
> s16le (intermediate s16le)
> ( 140.591| 0.000) D: [pulseaudio] resampler.c: channels 1 -> 2
> (resampling 1)
> ( 140.591| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
> ( 140.591| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c: Created input 3
> "Playback" on pa_sink_app01 with sample spec float32le 1ch 44100Hz and
> channel map mono
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c:
> application.icon_name = "chromium-browser"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c: media.name =
> "Playback"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c: application.name =
> "Chromium"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c: native-protocol.peer
> = "TCP/IP client from 127.0.0.1:59666"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c:
> native-protocol.version = "29"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c:
> application.process.id = "98"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c:
> application.process.user = "root"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c:
> application.process.host = "896cea5e6e82"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c:
> application.process.binary = "chrome"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c: application.language
> = "C"
> ( 140.591| 0.000) I: [pulseaudio] sink-input.c:
> application.process.machine_id = "3d6ff2f75c7d3ae927580249a28e7e05"
> ( 140.592| 0.000) I: [pulseaudio] protocol-native.c: Requested
> tlength=69.66 ms, minreq=11.61 ms
> ( 140.592| 0.000) D: [pulseaudio] protocol-native.c: Adjust latency mode
> enabled, configuring sink latency to half of overall latency.
> ( 140.592| 0.000) D: [pulseaudio] protocol-native.c: Requested
> latency=23.22 ms, Received latency=23.22 ms
> ( 140.592| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=4194304, tlength=8192, base=4, prebuf=6148, minreq=2048
> maxrewind=0
> ( 140.592| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=4194304, tlength=8192, base=4, prebuf=6148, minreq=2048
> maxrewind=0
> ( 140.592| 0.000) I: [pulseaudio] protocol-native.c: Final latency 69.66
> ms = 23.22 ms + 2*11.61 ms + 23.22 ms
> ( 140.592| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 140.593| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 140.593| 0.000) D: [null-sink] sink-input.c: Requesting rewind due to
> uncorking
> ( 140.593| 0.000) D: [null-sink] module-null-sink.c: Requested to rewind
> 880 bytes.
> ( 140.593| 0.000) D: [null-sink] sink.c: Processing rewind...
> ( 140.593| 0.000) D: [null-sink] source.c: Processing rewind...
> ( 140.593| 0.000) D: [null-sink] source-output.c: Have to rewind 560
> bytes on implementor.
> ( 140.593| 0.000) D: [null-sink] module-null-sink.c: Rewound 280 bytes.
> ( 140.930| 0.336) I: [pulseaudio] socket-server.c: TCP connection
> accepted by tcpwrap.
> ( 140.930| 0.000) I: [pulseaudio] client.c: Created 11 "Native client
> (TCP/IP client from 127.0.0.1:59672)"
> ( 140.930| 0.000) D: [pulseaudio] protocol-native.c: Protocol version:
> remote 29, local 29
> ( 140.930| 0.000) D: [pulseaudio] protocol-native.c: SHM possible: no
> ( 140.930| 0.000) D: [pulseaudio] protocol-native.c: Negotiated SHM: no
> ( 140.931| 0.000) D: [pulseaudio] sink-input.c: Negotiated format: pcm,
> format.sample_format = "\"float32le\"" format.rate = "44100"
> format.channels = "2" format.channel_map = "\"front-left,front-right\""
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c: Trying to change sample
> rate
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c: Rate changed to 44100 Hz
> ( 140.931| 0.000) I: [pulseaudio] resampler.c: Forcing resampler 'copy',
> because of fixed, identical sample rates.
> ( 140.931| 0.000) D: [pulseaudio] resampler.c: Resampler:
> ( 140.931| 0.000) D: [pulseaudio] resampler.c: rate 44100 -> 44100
> (method copy)
> ( 140.931| 0.000) D: [pulseaudio] resampler.c: format float32le ->
> s16le (intermediate s16le)
> ( 140.931| 0.000) D: [pulseaudio] resampler.c: channels 2 -> 2
> (resampling 2)
> ( 140.931| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
> ( 140.931| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c: Created input 4
> "Playback" on pa_sink_app01 with sample spec float32le 2ch 44100Hz and
> channel map front-left,front-right
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c:
> application.icon_name = "chromium-browser"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c: media.name =
> "Playback"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c: application.name =
> "Chromium"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c: native-protocol.peer
> = "TCP/IP client from 127.0.0.1:59672"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c:
> native-protocol.version = "29"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c:
> application.process.id = "98"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c:
> application.process.user = "root"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c:
> application.process.host = "896cea5e6e82"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c:
> application.process.binary = "chrome"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c: application.language
> = "C"
> ( 140.931| 0.000) I: [pulseaudio] sink-input.c:
> application.process.machine_id = "3d6ff2f75c7d3ae927580249a28e7e05"
> ( 140.931| 0.000) I: [pulseaudio] protocol-native.c: Requested
> tlength=34.83 ms, minreq=5.80 ms
> ( 140.931| 0.000) D: [pulseaudio] protocol-native.c: Adjust latency mode
> enabled, configuring sink latency to half of overall latency.
> ( 140.931| 0.000) D: [pulseaudio] protocol-native.c: Requested
> latency=11.61 ms, Received latency=11.61 ms
> ( 140.931| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=4194304, tlength=8192, base=8, prebuf=6152, minreq=2048
> maxrewind=0
> ( 140.931| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=4194304, tlength=8192, base=8, prebuf=6152, minreq=2048
> maxrewind=0
> ( 140.931| 0.000) I: [pulseaudio] protocol-native.c: Final latency 34.83
> ms = 11.61 ms + 2*5.80 ms + 11.61 ms
> ( 140.931| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 140.932| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 140.932| 0.000) D: [null-sink] sink-input.c: Requesting rewind due to
> uncorking
> ( 140.932| 0.000) D: [null-sink] module-null-sink.c: Requested to rewind
> 880 bytes.
> ( 140.932| 0.000) D: [null-sink] sink.c: Processing rewind...
> ( 140.932| 0.000) D: [null-sink] sink-input.c: Have to rewind 164 bytes
> on render memblockq.
> ( 140.932| 0.000) D: [null-sink] source.c: Processing rewind...
> ( 140.932| 0.000) D: [null-sink] source-output.c: Have to rewind 328
> bytes on implementor.
> ( 140.932| 0.000) D: [null-sink] module-null-sink.c: Rewound 164 bytes.
> ( 141.302| 0.369) I: [pulseaudio] socket-server.c: TCP connection
> accepted by tcpwrap.
> ( 141.302| 0.000) I: [pulseaudio] client.c: Created 12 "Native client
> (TCP/IP client from 127.0.0.1:59674)"
> ( 141.302| 0.000) D: [pulseaudio] protocol-native.c: Protocol version:
> remote 29, local 29
> ( 141.302| 0.000) D: [pulseaudio] protocol-native.c: SHM possible: no
> ( 141.302| 0.000) D: [pulseaudio] protocol-native.c: Negotiated SHM: no
> ( 141.302| 0.000) D: [pulseaudio] source-output.c: Negotiated format:
> pcm, format.sample_format = "\"s16le\"" format.rate = "8000"
> format.channels = "1" format.channel_map = "\"mono\""
> ( 141.302| 0.000) I: [pulseaudio] source-output.c: Trying to change
> sample rate
> ( 141.302| 0.000) I: [pulseaudio] source.c: Cannot update rate,
> SOURCE_IS_RUNNING, will keep using 44100 Hz
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: Channel matrix:
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: I00 I01
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: +------------
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: O00 | 0.500 0.500
> ( 141.302| 0.000) I: [pulseaudio] remap.c: Using generic matrix remapping
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: Resampler:
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: rate 44100 -> 8000
> (method speex-float-1)
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: format s16le -> s16le
> (intermediate float32le)
> ( 141.302| 0.000) D: [pulseaudio] resampler.c: channels 2 -> 1
> (resampling 1)
> ( 141.302| 0.000) I: [pulseaudio] resampler.c: Choosing speex quality
> setting 1.
> ( 141.302| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
> ( 141.302| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
> ( 141.302| 0.000) I: [pulseaudio] source-output.c: Created output 3
> "ALSA Capture" on pa_sink_app01.monitor with sample spec s16le 1ch 8000Hz
> and channel map mono
> ( 141.302| 0.000) I: [pulseaudio] source-output.c: media.name =
> "ALSA Capture"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c: application.name
> = "ALSA plug-in [app02]"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> native-protocol.peer = "TCP/IP client from 127.0.0.1:59674"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> native-protocol.version = "29"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> application.process.id = "183"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> application.process.user = "root"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> application.process.host = "896cea5e6e82"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> application.process.binary = "app02"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> application.language = "C"
> ( 141.302| 0.000) I: [pulseaudio] source-output.c:
> application.process.machine_id = "3d6ff2f75c7d3ae927580249a28e7e05"
> ( 141.303| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=4194304, tlength=0, base=2, prebuf=1, minreq=0 maxrewind=0
> ( 141.303| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=4194304, tlength=4194304, base=2, prebuf=2, minreq=2 maxrewind=0
> ( 141.303| 0.000) I: [pulseaudio] protocol-native.c: Final latency 64.00
> ms = 32.00 ms + 32.00 ms
> ( 141.336| 0.032) I: [pulseaudio] socket-server.c: TCP connection
> accepted by tcpwrap.
> ( 141.336| 0.000) I: [pulseaudio] client.c: Created 13 "Native client
> (TCP/IP client from 127.0.0.1:59676)"
> ( 141.336| 0.000) D: [pulseaudio] protocol-native.c: Protocol version:
> remote 29, local 29
> ( 141.336| 0.000) D: [pulseaudio] protocol-native.c: SHM possible: no
> ( 141.336| 0.000) D: [pulseaudio] protocol-native.c: Negotiated SHM: no
> ( 141.336| 0.000) D: [pulseaudio] sink-input.c: Negotiated format: pcm,
> format.sample_format = "\"s16le\"" format.rate = "8000" format.channels =
> "1" format.channel_map = "\"mono\""
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c: Trying to change sample
> rate
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: Channel matrix:
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: I00
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: +------
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: O00 | 1.000
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: O01 | 1.000
> ( 141.336| 0.000) I: [pulseaudio] remap_sse.c: Using SSE2 mono to stereo
> remapping
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: Resampler:
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: rate 8000 -> 44100
> (method speex-float-1)
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: format s16le ->
> float32le (intermediate float32le)
> ( 141.336| 0.000) D: [pulseaudio] resampler.c: channels 1 -> 2
> (resampling 1)
> ( 141.336| 0.000) I: [pulseaudio] resampler.c: Choosing speex quality
> setting 1.
> ( 141.336| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=33554432, tlength=0, base=8, prebuf=0, minreq=1 maxrewind=0
> ( 141.336| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=33554432, tlength=33554432, base=8, prebuf=0, minreq=8 maxrewind=0
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c: Created input 5 "ALSA
> Playback" on pa_sink_app02 with sample spec s16le 1ch 8000Hz and channel
> map mono
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c: media.name = "ALSA
> Playback"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c: application.name =
> "ALSA plug-in [app02]"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c: native-protocol.peer
> = "TCP/IP client from 127.0.0.1:59676"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c:
> native-protocol.version = "29"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c:
> application.process.id = "183"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c:
> application.process.user = "root"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c:
> application.process.host = "896cea5e6e82"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c:
> application.process.binary = "app02"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c: application.language
> = "C"
> ( 141.336| 0.000) I: [pulseaudio] sink-input.c:
> application.process.machine_id = "3d6ff2f75c7d3ae927580249a28e7e05"
> ( 141.336| 0.000) I: [pulseaudio] protocol-native.c: Requested
> tlength=256.00 ms, minreq=32.00 ms
> ( 141.336| 0.000) D: [pulseaudio] protocol-native.c: Early requests mode
> enabled, configuring sink latency to minreq.
> ( 141.337| 0.000) D: [pulseaudio] protocol-native.c: Requested
> latency=32.00 ms, Received latency=250.00 ms
> ( 141.337| 0.000) D: [pulseaudio] memblockq.c: memblockq requested:
> maxlength=4194304, tlength=12000, base=2, prebuf=512, minreq=4000
> maxrewind=0
> ( 141.337| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized:
> maxlength=4194304, tlength=12000, base=2, prebuf=512, minreq=4000
> maxrewind=0
> ( 141.337| 0.000) I: [pulseaudio] protocol-native.c: Final latency
> 1000.00 ms = 250.00 ms + 2*250.00 ms + 250.00 ms
> ( 141.337| 0.000) D: [pulseaudio] module-virtual-source.c: Resuming
> source pa_source_app01, because its uplink sink became active.
> ( 141.355| 0.017) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 150.955| 9.600) D: [null-sink] sink-input.c: Requesting rewind due to
> corking
> ( 150.956| 0.000) D: [null-sink] module-null-sink.c: Requested to rewind
> 880 bytes.
> ( 150.956| 0.000) D: [null-sink] sink.c: Processing rewind...
> ( 150.956| 0.000) D: [null-sink] sink-input.c: Have to rewind 576 bytes
> on render memblockq.
> ( 150.956| 0.000) D: [null-sink] sink-input.c: Have to rewind 1028 bytes
> on implementor.
> ( 150.956| 0.000) D: [null-sink] sink-input.c: Have to rewind 576 bytes
> on render memblockq.
> ( 150.956| 0.000) D: [null-sink] source.c: Processing rewind...
> ( 150.956| 0.000) D: [null-sink] source-output.c: Have to rewind 1152
> bytes on implementor.
> ( 150.956| 0.000) D: [null-sink] module-null-sink.c: Rewound 576 bytes.
> ( 150.956| 0.000) D: [null-sink] protocol-native.c: Requesting rewind
> due to end of underrun.
> ( 155.957| 5.000) D: [null-sink] module-null-sink.c: Requested to rewind
> 880 bytes.
> ( 155.957| 0.000) D: [null-sink] sink.c: Processing rewind...
> ( 155.957| 0.000) D: [null-sink] sink-input.c: Have to rewind 236 bytes
> on render memblockq.
> ( 155.957| 0.000) D: [null-sink] source.c: Processing rewind...
> ( 155.957| 0.000) I: [pulseaudio] sink-input.c: Freeing input 3
> "Playback"
> ( 155.957| 0.000) D: [null-sink] source-output.c: Have to rewind 472
> bytes on implementor.
> ( 155.957| 0.000) I: [pulseaudio] client.c: Freed 10 "Chromium"
> ( 155.957| 0.000) I: [pulseaudio] protocol-native.c: Connection died.
> ( 155.957| 0.000) D: [null-sink] module-null-sink.c: Rewound 236 bytes.
> ( 165.359| 9.401) I: [pulseaudio] source-output.c: Freeing output 3
> "ALSA Capture"
> ( 165.359| 0.000) I: [pulseaudio] client.c: Freed 12 "ALSA plug-in
> [app02]"
> ( 165.359| 0.000) I: [pulseaudio] protocol-native.c: Connection died.
> ( 165.359| 0.000) D: [null-sink] sink-input.c: Requesting rewind due to
> corking
> ( 165.359| 0.000) D: [null-sink] sink-input.c: Have to rewind 2 bytes on
> implementor.
> ( 165.360| 0.000) I: [pulseaudio] sink-input.c: Freeing input 5 "ALSA
> Playback"
> ( 165.360| 0.000) I: [pulseaudio] client.c: Freed 13 "ALSA plug-in
> [app02]"
> ( 165.360| 0.000) I: [pulseaudio] protocol-native.c: Connection died.
>
> On Fri, Nov 9, 2018 at 8:39 AM Daniel <windseeker at gmx.de> wrote:
>
>> I'm not sure if I understood completely, but If your recording app cannot
>> record via pulseaudio at all, then I don't know how to solve this with
>> pulseaudio.
>>
>> If your recording app CAN record via pulseaudio, then of course you can
>> also use "pactl" to move sinks and sources with "move-sink-input" and
>> "move-source-output" commands headless from command line/script/whatever.
>>
>> Example: I have my audio player "audacious" playing to pulseaudio, have
>> "pacat -r " recording from pulseaudio and I've loaded a null-sink module.
>>
>> Let's look around in pulseaudio
>>
>> $ pactl list clients short
>> [...]
>> 36 protocol-native.c pacat
>> 57 protocol-native.c audacious
>> [...]
>>
>> $ pactl list sinks short
>> 0 alsa_output.pci-0000_00_1f.3.analog-stereo
>> module-alsa-card.c s16le 2ch 44100Hz RUNNING
>> [...]
>> 4 null module-null-sink.c s16le 2ch 44100Hz IDLE
>>
>> $ pactl list sources short
>> 0 alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
>> module-alsa-card.c s16le 2ch 44100HzRUNNING
>> [...]
>> 4 null.monitor module-null-sink.c s16le 2ch 44100Hz
>> RUNNING
>>
>> Now lets see where audacious (Client 57) is playing to:
>>
>> $ pactl list sink-inputs short
>> [...]
>> 8 0 57 protocol-native.c float32le 2ch 44100Hz
>>
>> Well client 57 has a sink-input 8 which it uses to play to sink 0. That's
>> my soundcard, d'oh! So let's move it to sink 4, the null sink.
>>
>> $ pactl move-sink-input 8 4
>>
>> Now audacious plays to the null sink. Good. Now let's look at the
>> recording app pacat, client 36:
>>
>> $ pactl list source-outputs short
>> [...]
>> 16 0 36 protocol-native.c s16le 2ch 44100Hz
>> [...]
>>
>> Okay, with its source-output 16 it records from my soundcard (source 0)
>> instead of null.monitor (source 4). So let's move this, too:
>>
>> $ pactl move-source-output 16 4
>>
>> Et voila, I'm recording with pacat, what my audacious player is playing.
>>
>> Hope that helps.
>>
>> Regards,
>> Daniel
>>
>> Am Fr., 9. Nov. 2018 um 08:41 Uhr schrieb Zoltán Szabó <zoell at zoell.us>:
>>
>>> Hi Daniel,
>>>
>>> I am running these in console. I don't have GUI. app01 that should use
>>> the monitor is Chrome in headless mode and it just simply not able to open
>>> the monitor. It can open and use a pipe source or virtual source but not a
>>> null sink's monitor :(
>>>
>>> Zoltan
>>>
>>> On Fri, Nov 9, 2018 at 5:30 AM Daniel <windseeker at gmx.de> wrote:
>>>
>>>> Hi Zoltán,
>>>>
>>>> Since years now I successfully use the way you mentioned in "P.S.". I
>>>> play to a null sink and record from its monitor.
>>>>
>>>> I'm not sure why app02 should not be able to connect to this monitor. If
>>>> app02 is recording from PA in general, independent of "from where", then it
>>>> should show in pavucontrol in the "recording" tab. There you can set it's
>>>> input source to the null sink monitor where app01 plays to.
>>>>
>>>> Regards,
>>>> Daniel
>>>>
>>>> Am Do., 8. Nov. 2018, 19:50 hat Zoltán Szabó <zoell at zoell.us>
>>>> geschrieben:
>>>>
>>>>> Hi,
>>>>>
>>>>> I would like to connect my app01's audio output to my app02's
>>>>> microphone.
>>>>>
>>>>> Here is what I have tried so far:
>>>>>
>>>>> I create a file pipe sink for my app01:
>>>>> load-module module-pipe-sink sink_name=pa_speaker_app01
>>>>> file=/home/pulseaudio/pa_speaker_app01 format=ulaw rate=8000 channels=1
>>>>>
>>>>> I create a file pipe sink for my app02:
>>>>> load-module module-pipe-sink sink_name=pa_speaker_app02
>>>>> file=/home/pulseaudio/pa_speaker_app02 format=ulaw rate=8000 channels=1
>>>>>
>>>>> This way both of my apps have an available output device.
>>>>>
>>>>> I create a virtual source as a mic for my other app01 and 02:
>>>>> load-module module-virtual-source source_name=pa_virtual_source_app01
>>>>> uplink_sink=pa_speaker_app02
>>>>> load-module module-virtual-source source_name=pa_virtual_source_app02
>>>>> uplink_sink=pa_speaker_app01
>>>>>
>>>>> This way anything played on pa_speaker_app02 should be routed to the
>>>>> app01's microphone pa_virtual_source_app01, right? Also should be true for
>>>>> app01 to app02.
>>>>>
>>>>> So I start my app01 and 2:
>>>>> PULSE_SOURCE=pa_virtual_source_app01 PULSE_SINK=pa_speaker_app01
>>>>> ./startapp01
>>>>> PULSE_SOURCE=pa_virtual_source_app02 PULSE_SINK=pa_speaker_app02
>>>>> ./startapp01
>>>>>
>>>>> But this is not working at all. Is this not the right approach? I can
>>>>> see in the PA logs that the apps are connected successfully to PA.
>>>>>
>>>>> PS: I also tried to crate a null sink, but app01 (it is actually
>>>>> chrome) is not able to open the null sink's monitor as a mic.
>>>>>
>>>>> Thanks
>>>>> zoell
>>>>>
>>>>> _______________________________________________
>>>>> pulseaudio-discuss mailing list
>>>>> pulseaudio-discuss at lists.freedesktop.org
>>>>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>>>>>
>>>> _______________________________________________
>>>> pulseaudio-discuss mailing list
>>>> pulseaudio-discuss at lists.freedesktop.org
>>>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>>>>
>>> _______________________________________________
>>> pulseaudio-discuss mailing list
>>> pulseaudio-discuss at lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>>>
>> _______________________________________________
>> pulseaudio-discuss mailing list
>> pulseaudio-discuss at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>>
>
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