Add 'internal' streams for routing, revamp stream finalisation

Uses the ALSA internal PCM API to create streams purely used for internal
routing purposes.
Adds the 'try_complete' functions for both streams and routes in an
attempt to standardize the finalization of a stream or route object.

Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>

1 files changed, 20 insertions, 1 deletions

diff --git a/core.h b/core.h
index f915c04..38fee35 100644
--- a/core.h
+++ b/core.h
@@ -99,10 +99,29 @@ struct snd_avirt_stream *snd_avirt_stream_find_by_device(unsigned int device);
  * @name: The name designated to the audio stream
  * @direction: The PCM direction (SNDRV_PCM_STREAM_PLAYBACK or
  *             SNDRV_PCM_STREAM_CAPTURE)
+ * @internal: Whether the PCM should be internal or not
  * @return: The newly created audio stream if successful, or an error pointer
  */
 struct snd_avirt_stream *snd_avirt_stream_create(const char *name,
-						 int direction);
+						 int direction, bool internal);
+
+/**
+ * int snd_avirt_route_try_complete - Set up remaining parameters for a route.
+ *                                    Channels, sink, and source Audio Paths
+ *                                    should be set when calling this function.
+ * @stream: The route to attempt to finalize parameters for.
+ * @return: 0 on success, negative ERRNO on failure
+ */
+int snd_avirt_route_try_complete(struct snd_avirt_route *route);
+
+/**
+ * int snd_avirt_stream_try_complete - Set up remaining parameters for a stream.
+ *                                     Channels and map should be set when
+ *                                     calling this function.
+ * @stream: The stream to attempt to finalize parameters for.
+ * @return: 0 on success, negative ERRNO on failure
+ */
+int snd_avirt_stream_try_complete(struct snd_avirt_stream *stream);
 /**
  * snd_avirt_stream_set_map - Set Audio Path mapping for a given stream
  * @stream: The stream to assign the mapping to.