formatting "pacmd list-sink-inputs" using jq

cat exampleOf2Inputs


2 sink input(s) available.
    index: 144
	driver: <protocol-native.c>
	flags:
	state: RUNNING
	sink: 4 <alsa_output.pci-0000_05_00.0.analog-stereo>
	volume: front-left: 15728 /  24% / -37.19 dB,   front-right: 15728 /  24% / -37.19 dB
	        balance 0.00
	muted: no
	current latency: 70.48 ms
	requested latency: 210.00 ms
	sample spec: float32le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	resample method: copy
	module: 13
	client: 245 <MPlayer>
	properties:
		media.name = "UNREAL! Tetris Theme on Violin and Guitar-TnDIRr9C83w.webm"
		application.name = "MPlayer"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "32"
		application.process.id = "1543"
		application.process.user = "mmucha"
		application.process.host = "vbDesktop"
		application.process.binary = "mplayer"
		application.language = "C"
		window.x11.display = ":0"
		application.process.machine_id = "720184179caa46f0a3ce25156642f7a0"
		application.process.session_id = "2"
		module-stream-restore.id = "sink-input-by-application-name:MPlayer"
    index: 145
	driver: <protocol-native.c>
	flags:
	state: RUNNING
	sink: 4 <alsa_output.pci-0000_05_00.0.analog-stereo>
	volume: front-left: 24903 /  38% / -25.21 dB,   front-right: 24903 /  38% / -25.21 dB
	        balance 0.00
	muted: no
	current latency: 70.50 ms
	requested latency: 210.00 ms
	sample spec: float32le 2ch 48000Hz
	channel map: front-left,front-right
	             Stereo
	resample method: speex-float-1
	module: 13
	client: 251 <MPlayer>
	properties:
		media.name = "Trombone Shorty At Age 13 - 2nd Line-k9YUi3UhEPQ.webm"
		application.name = "MPlayer"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "32"
		application.process.id = "2831"
		application.process.user = "mmucha"
		application.process.host = "vbDesktop"
		application.process.binary = "mplayer"
		application.language = "C"
		window.x11.display = ":0"
		application.process.machine_id = "720184179caa46f0a3ce25156642f7a0"
		application.process.session_id = "2"
		module-stream-restore.id = "sink-input-by-application-name:MPlayer"



cat parse.jq



def parse:
  def interpret:
    if . == null then .
    elif startswith("\"") and endswith("\"")
    then  .[1:-1]
    else tonumber? // .
    end;
  (capture( "(?<key>[^:= ]*)(: | = )(?<value>.*)" ) // null)
  | if . then .value = (.value | interpret) else . end
;

# Construct one object for each "segment"
def construct(s):
  [ foreach (s, 0) as $kv (null;
      if $kv == 0 or $kv.index
      then .complete = .accumulator | .accumulator = $kv
      else .complete = null | .accumulator += $kv
      end;
      .complete // empty ) ]
;


construct(inputs | parse | select(.) | {(.key):.value})
| map( {pid: .["application.process.id"],
        index,
        appname: .["application.name"],
        medianame: .["media.name"]} )






jq -nR -f parse.jq exampleOf2Inputs
[
  {
    "pid": null,
    "index": 144,
    "appname": null,
    "medianame": null
  },
  {
    "pid": null,
    "index": 145,
    "appname": null,
    "medianame": null
  }
]