Added functions to be able to play on more renderers.

scribblings/racket-audio-dlna.scrbl

@@ -60,6 +60,37 @@ Publishes and preloads the file with @tt{SetNextAVTransportURI}.  Replacing the
 next file removes the previous next-file publication.
 }
 
+@defproc[(dlna-player-play-uri!
+          [player dlna-player?]
+          [uri string?]
+          [#:metadata metadata string? ""]
+          [#:protocol-info protocol-info (or/c #f string?) #f]
+          [#:mime-type mime-type (or/c #f string?) #f]
+          [#:track track (or/c #f dlna-track-info?) #f])
+         void?]{
+
+Installs an existing HTTP media URI directly on the renderer and starts
+playback. The URI is not published or owned by this player. Optional
+DIDL-Lite metadata and track information are retained in the player state.
+When @racket[protocol-info] or @racket[mime-type] is supplied, the resource
+capabilities are resolved by @racketmodname[racket-upnp] immediately before
+playback and matching DIDL-Lite is generated automatically. In that case
+@racket[metadata] is ignored.
+}
+
+@defproc[(dlna-player-set-next-uri!
+          [player dlna-player?]
+          [uri string?]
+          [#:metadata metadata string? ""]
+          [#:protocol-info protocol-info (or/c #f string?) #f]
+          [#:mime-type mime-type (or/c #f string?) #f]
+          [#:track track (or/c #f dlna-track-info?) #f])
+         void?]{
+
+Preloads an existing HTTP media URI with @tt{SetNextAVTransportURI}. Replacing
+it never attempts to remove the external resource.
+}
+
 @defproc[(dlna-player-pause! [player dlna-player?]) void?]
 @defproc[(dlna-player-resume! [player dlna-player?]) void?]
 @defproc[(dlna-player-stop! [player dlna-player?]) void?]