Da saída de pactl list sink-inputs
, eu preciso pegar o número sink input para o VLC. Antes disso, estou tentando extrair a peça que contém a saída apenas para o VLC. Todos os métodos que pensei que funcionariam têm deficiências. Este é um exemplo de saída:
$ pactl list sink-inputs
Sink Input #1373
Driver: protocol-native.c
Owner Module: 9
Client: 10350
Sink: 0
Sample Specification: float32le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"float32le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"front-left,front-right\""
Corked: no
Mute: no
Volume: 0: 100% 1: 100%
0: 0,00 dB 1: 0,00 dB
balance 0,00
Buffer Latency: 453287 usec
Sink Latency: 19697 usec
Resample method: copy
Properties:
media.role = "video"
media.name = "audio stream"
application.name = "VLC media player (LibVLC 2.1.5)"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "28"
application.id = "org.VideoLAN.VLC"
application.version = "2.1.5"
application.icon_name = "vlc"
application.language = "pt_BR.UTF-8"
application.process.id = "19965"
application.process.machine_id = "948146522454ae6aa2bb8ed153f4bce4"
application.process.session_id = "948146522454ae6aa2bb8ed153f4bce4-1431635199.85146-1790309877"
application.process.user = "teresaejunior"
application.process.host = "localhost"
application.process.binary = "vlc"
window.x11.display = ":0.0"
module-stream-restore.id = "sink-input-by-media-role:video"
Sink Input #1378
Driver: protocol-native.c
Owner Module: 9
Client: 10378
Sink: 0
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"s16le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"front-left,front-right\""
Corked: no
Mute: no
Volume: 0: 87% 1: 87%
0: -3,63 dB 1: -3,63 dB
balance 0,00
Buffer Latency: 989841 usec
Sink Latency: 19572 usec
Resample method: n/a
Properties:
media.name = "audio stream"
application.name = "mplayer2"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "28"
application.process.id = "20093"
application.process.user = "teresaejunior"
application.process.host = "localhost"
application.process.binary = "mplayer2"
application.language = "C"
window.x11.display = ":0.0"
application.process.machine_id = "948146522454ae6aa2bb8ed153f4bce4"
module-stream-restore.id = "sink-input-by-application-name:mplayer2"
Tanto awk '/^Sink/,/VLC/'
como sed -n '/^Sink/,/VLC/p'
pegam a parte VLC, mas depois também pegam a parte mplayer2 e vão até o final da saída:
$ pactl list sink-inputs | awk '/^Sink/,/VLC/'
Sink Input #1373
Driver: protocol-native.c
Owner Module: 9
Client: 10350
Sink: 0
Sample Specification: float32le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"float32le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"front-left,front-right\""
Corked: no
Mute: no
Volume: 0: 100% 1: 100%
0: 0,00 dB 1: 0,00 dB
balance 0,00
Buffer Latency: 437414 usec
Sink Latency: 19666 usec
Resample method: copy
Properties:
media.role = "video"
media.name = "audio stream"
application.name = "VLC media player (LibVLC 2.1.5)"
Sink Input #1379
Driver: protocol-native.c
Owner Module: 9
Client: 10381
Sink: 0
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"s16le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"front-left,front-right\""
Corked: no
Mute: no
Volume: 0: 87% 1: 87%
0: -3,63 dB 1: -3,63 dB
balance 0,00
Buffer Latency: 980045 usec
Sink Latency: 19563 usec
Resample method: n/a
Properties:
media.name = "audio stream"
application.name = "mplayer2"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "28"
application.process.id = "20093"
application.process.user = "teresaejunior"
application.process.host = "localhost"
application.process.binary = "mplayer2"
application.language = "C"
window.x11.display = ":0.0"
application.process.machine_id = "948146522454ae6aa2bb8ed153f4bce4"
module-stream-restore.id = "sink-input-by-application-name:mplayer2"
grep -Poz '^Sink(?s).*?VLC'
funciona, mas se a saída do VLC vier depois do mplayer2, ele falhará (um teste com o mplayer2 em vez do VLC):
$ pactl list sink-inputs | grep -Poz '^Sink(?s).*?mplayer'
Sink Input #1373
Driver: protocol-native.c
Owner Module: 9
Client: 10350
Sink: 0
Sample Specification: float32le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"float32le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"front-left,front-right\""
Corked: no
Mute: no
Volume: 0: 100% 1: 100%
0: 0,00 dB 1: 0,00 dB
balance 0,00
Buffer Latency: 441088 usec
Sink Latency: 18159 usec
Resample method: copy
Properties:
media.role = "video"
media.name = "audio stream"
application.name = "VLC media player (LibVLC 2.1.5)"
native-protocol.peer = "UNIX socket client"
native-protocol.version = "28"
application.id = "org.VideoLAN.VLC"
application.version = "2.1.5"
application.icon_name = "vlc"
application.language = "pt_BR.UTF-8"
application.process.id = "19965"
application.process.machine_id = "948146522454ae6aa2bb8ed153f4bce4"
application.process.session_id = "948146522454ae6aa2bb8ed153f4bce4-1431635199.85146-1790309877"
application.process.user = "teresaejunior"
application.process.host = "localhost"
application.process.binary = "vlc"
window.x11.display = ":0.0"
module-stream-restore.id = "sink-input-by-media-role:video"
Sink Input #1380
Driver: protocol-native.c
Owner Module: 9
Client: 10396
Sink: 0
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"s16le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"front-left,front-right\""
Corked: no
Mute: no
Volume: 0: 87% 1: 87%
0: -3,63 dB 1: -3,63 dB
balance 0,00
Buffer Latency: 989841 usec
Sink Latency: 18084 usec
Resample method: n/a
Properties:
media.name = "audio stream"
application.name = "mplayer
A saída desejada:
Sink Input #1373
Driver: protocol-native.c
Owner Module: 9
Client: 10350
Sink: 0
Sample Specification: float32le 2ch 44100Hz
Channel Map: front-left,front-right
Format: pcm, format.sample_format = "\"float32le\"" format.rate = "44100" format.channels = "2" format.channel_map = "\"front-left,front-right\""
Corked: no
Mute: no
Volume: 0: 100% 1: 100%
0: 0,00 dB 1: 0,00 dB
balance 0,00
Buffer Latency: 441088 usec
Sink Latency: 18159 usec
Resample method: copy
Properties:
media.role = "video"
media.name = "audio stream"
application.name = "VLC media player (LibVLC 2.1.5)"