Hi,
Thanks for the tips.
Now,I want to do a test which set different outputs by
[pulseaudio-module-murphy-ivi].
When I want to edit the [murphy-ivi.lua] file, This is a question about it.
> 1) I changed the default_driver routing group _not_ to route ever to
usb_headset
Q: When I want to do it, I don't understand where [node.usb_headset] is
defined?
And I want to know where define the [node].
And I have some questions about [murphy-ivi.lua] file.
Q1: If we don't define the [binaries] in application_class. When the App
play the Audio file,
The APP how to associate to the [application_class]?
Q2: What is the meaning for the [roles] setting.
By the way,Is there any documents about [murphy-ivi.lua]file?
------
Yu
2014-12-16 22:34 GMT+08:00 Uimonen, Jaska <[email protected]>:
>
> Hello,
>
> I apologize for the horribly long email, but it is hard to
> explain this in shorter message.
>
>
> First: Are you using the exactly same binary to play the 2 files?
>
> There is a conceptual difficulty of identifying where the apps
> need to be routed if we can't separate them or they are not
> providing additional information through the audio API to be
> handled by the policy engine. So apps would need to set some environment
> variable, come from different sessions, set some properties on the
> audio API's. Or then just they have to be different binaries...
>
> *****************************
>
> Second: Which API are the apps using for audio playback? 1) pulseaudio,
> 2) gstreamer or 3 some higher level API (like QT or similar)?
>
> With 1 and 2 you can set properties to indicate where to route, or
> what is your application class. With 3 it depends on the API can
> you pass properties to underlying layers.
>
> So for example with pulseaudio API I can just define the routing
> target where to play. In my IVI box:
>
> paplay -d
> alsa_output.usb-Logitech_Logitech_USB_Headset-00-Headset.analog-stereo
> test1.wav
> paplay -d alsa_output.pci-0000_00_1b.0.analog-stereo test2.wav
>
> *******************************
>
> pulseaudio-module-murphy-ivi can do automatic routing and its configuration
> file is murphy-ivi.lua. There you define zones, routing groups and
> application
> classes. Application class binds together zones and routing groups.
> Unfortunately
> you can't bind binary names to zones (and on to different routing groups)
> and if
> you are using the same binary, that would not even work for you.
>
> Here's what I changed in murphy-ivi.lua:
>
> routing_group {
> name = "default_driver",
> node_type = node.output,
> accept = function(self, n)
> return (n.type ~= node.bluetooth_carkit and n.type ~= node.hdmi
> and n.type ~= node.usb_headset)
> end,
> compare = builtin.method.compare_default
> }
>
> routing_group {
> name = "default_passanger2",
> node_type = node.output,
> accept = function(self, n)
> return (n.type == node.usb_headset or n.name == 'Silent')
> end,
> compare = builtin.method.compare_default
> }
>
> application_class {
> class = "player",
> node_type = node.player,
> priority = 1,
> route = {
> output = { driver = routing_group.default_driver_output,
> passanger1 = routing_group.default_passanger1_output,
> passanger2 = routing_group.default_passanger2_output}
> },
> roles = { music = {0, "mandatory", "exclusive"},
> video = {0, "mandatory", "exclusive"},
> test = {0, "mandatory", "exclusive"},
> bt_music = no_resource,
> player = no_resource
> },
> binaries = { ['t8j6HTRpuz.MediaPlayer'] = "music" }
> }
>
> In english:
> 1) I changed the default_driver routing group _not_ to route ever to
> usb_headset
> 2) I created new routing group passanger2, which routes only to
> usb_headset (and to null if you don't have usb)
> 3) I bind the new routing group to app class player in the "output" section
>
> So now you can play to different outputs:
> paplay media.role=player test1.wav
> paplay media.role=player --property=zone.name=passanger2 test2.wav
>
> First stream goes to (default) driver zone and to speakers.
> Second stream goes to passanger2 zone -> to usb (if it is attached)
>
> ****************************************
>
> br,
> Jaska
>
>
> ________________________________________
> From: IVI [[email protected]] on behalf of 虞申鹏 [
> [email protected]]
> Sent: Tuesday, December 16, 2014 5:08 AM
> To: [email protected]
> Subject: [IVI] Audio stream routing
>
> This is a question about audio stream routing in IVI .
>
> We want to play different MP3 files at the same time, and output to
> different sound card.
> (example:MP3 file A → sound card A
> MP3 file B → sound card B
> It will be play at the same time )
>
> I'm sure we can route them by murphy.
>
> I know the file[murphy-ivi.lua] is open in file[module-murphy-ivi.c].
> But i don't know how to related to pulseaudio module?
> And how to customize the route rule?
>
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