Issue with spdr:// requestString

[sodface]

Does it make any sense to check for requestString and then call getRequestString? Am I reading this wrong?

slimserver/Slim/Player/Squeezebox.pm

Lines 794 to 795 in b4c87de

	my $methodHandler = $currentTrackHandler->can('requestString') ? $currentTrackHandler : $handler;
	$request_string = $methodHandler->getRequestString($client, $url, undef, $params->{'seekdata'} || $controller->song->seekdata);

The SqueezePlayDirect protocol handler defines requestString:

slimserver/Slim/Player/Protocols/SqueezePlayDirect.pm

Line 46 in b4c87de

sub requestString {

I'm testing using spdr:// formatted urls and was having issues getting Squeezebox.pm to send the strm command with an spdr:// url until I edited line 795 to $methodHandler->requestString and then it started working as expected.

[michaelherger]

TBH: I've long forgotten what the spdr protocol handler is supposed to do. Can you tell a little more about what you're trying to do?

[sodface]

The comment in SqueezePlayDirect.pm probably says it better than I can:

# protocol handler for the pseudo protocol spdr://

# This is used to allow remote urls to be passed direct to SqueezePlay clients
# SqueezePlay will then use applet handlers to decide how to parse/play the stream
# This allows SqueezePlay applets to extend playback functionality by requesting
# the server to play a url which will then be interpreted by another part of the applet

# urls are of the form:
#
# spdr://<handler>?params...
#
# where handler identifies a specific playback handler within SP

I have mpv working pretty well as a squeezebox player using a c-plugin that borrows heavily from existing c code, mostly from squeezeslave for the slimproto stuff. Basically, all the mpv c-plugin does is handle the slimproto comms with LMS and then issues commands to mpv to open files/urls and control playback, volume, etc.

Since mpv plays video, I was testing how to pass a video url from LMS to mpv, with the idea of perhaps working on a plugin, but I wanted to come up with a method before going any further. The spdr:// format seemed to do what I wanted.

For testing, I made a short playlist consisting of a remote .mp3 file (random from a google search), a local .mp3 file on my server, and then a remote .mp4 video.

A playlist with these entries plays the first two files and then does not play the third:

https://themamaship.com/music/Catalog/Sweet%20Home%20Alabama.mp3
http://10.0.0.10/repo/misc/preemph_test/test.mp3
https://test-videos.co.uk/vids/bigbuckbunny/mp4/h264/1080/Big_Buck_Bunny_1080_10s_1MB.mp4

If I change the third entry for the video to use the spdr:// prefix it works (after making the code change noted in my first post):

https://themamaship.com/music/Catalog/Sweet%20Home%20Alabama.mp3
http://10.0.0.10/repo/misc/preemph_test/test.mp3
spdr://mpv?url=https://test-videos.co.uk/vids/bigbuckbunny/mp4/h264/1080/Big_Buck_Bunny_1080_10s_1MB.mp4

[sodface]

Well, I should note too that I had to handle the spdr:// url in my c-plugin code but that's on the client side.

[sodface]

I think this was broken in the above referenced commit.

[sodface]

@philippe44 can you take a look at this when you get a chance?