Add support for bluetooth telephony

This adds support for bluetooth telephony.
A big rework in the softmixer internals has been
mandatory, in order to support dynamic streams creation
and deletions.

Bluetooth telephony relies on the recent evolutions
of bluez-alsa, the most important one being the
support of HFP over Ofono. The softmixer opens
PCM ioplugs provided by bluez-alsa.
Bluetooth SCO needs 2 streams, one for listening
and the other for talking. These streams are created
upon requests sent by the hal-manager.
The hal manager subscribes for bluez-alsa events
and request the list of availalble transports.

For each "attach" transaction verb, the softmixer
maintains a list of the all created objects
(sources, sinks, zones, ramps, streams, and more)
Additionnally, it creates a new verb when the attach
succeeds, that verb is typically something like
"sco_XX:XX:XX:XX:XX:XX", and the only supported action
at the present time is {"action":"remove"}, that performs
all the cleanup of the registered objects.

Change-Id: I1b119e6c079e60daf771e63c083a1ef33a39f379
Signed-off-by: Thierry Bultel <thierry.bultel@iot.bzh>

1 files changed, 9 insertions, 8 deletions

diff --git a/plugins/alsa/alsa-utils-dump.c b/plugins/alsa/alsa-utils-dump.c
index b6c011d..fba89a4 100644
--- a/plugins/alsa/alsa-utils-dump.c
+++ b/plugins/alsa/alsa-utils-dump.c
@@ -109,7 +109,7 @@ PUBLIC void AlsaDumpCtlSubdev(SoftMixerT *mixer, snd_ctl_t *handle) {
     while (1) {
 
         if (snd_ctl_pcm_next_device(handle, &dev) < 0) {
-            AFB_ApiError(mixer->api, "AlsaDumpCard: fail to open subdev card id=%s name=%s", cardId, cardName);
+            AFB_ApiError(mixer->api, "%s: fail to open subdev card id=%s name=%s", __func__, cardId, cardName);
             goto OnErrorExit;
         }
 
@@ -119,12 +119,13 @@ PUBLIC void AlsaDumpCtlSubdev(SoftMixerT *mixer, snd_ctl_t *handle) {
         // ignore empty device slot
         if ((err = snd_ctl_pcm_info(handle, pcminfo)) < 0) {
             if (err != -ENOENT)
-                AFB_ApiError(mixer->api, "control digital audio info (%s): %s", cardName, snd_strerror(err));
+                AFB_ApiError(mixer->api, "%s: control digital audio info (%s): %s", __func__, cardName, snd_strerror(err));
             continue;
         }
 
-        AFB_ApiDebug(mixer->api, "AlsaDumpCard card %d: %s [%s], device %d: %s [%s]",
-                cardIndex, cardId, cardName, dev, snd_pcm_info_get_id(pcminfo), snd_pcm_info_get_name(pcminfo));
+        AFB_ApiDebug(mixer->api,
+        			 "%s card %d: %s [%s], device %d: %s [%s]",
+					 __func__, cardIndex, cardId, cardName, dev, snd_pcm_info_get_id(pcminfo), snd_pcm_info_get_name(pcminfo));
 
         // loop on subdevices
         subdevCount = snd_pcm_info_get_subdevices_count(pcminfo);
@@ -133,12 +134,12 @@ PUBLIC void AlsaDumpCtlSubdev(SoftMixerT *mixer, snd_ctl_t *handle) {
         for (unsigned int idx = 0; idx < subdevCount; idx++) {
             snd_pcm_info_set_subdevice(pcminfo, idx);
             if ((err = snd_ctl_pcm_info(handle, pcminfo)) < 0) {
-                AFB_ApiError(mixer->api, "AlsaDumpCard: control digital audio playback info %i: %s", cardIndex, snd_strerror(err));
+                AFB_ApiError(mixer->api, "%s: control digital audio playback info %i: %s", __func__, cardIndex, snd_strerror(err));
             } else {
-				AFB_ApiDebug(mixer->api, "AlsaDumpCard: -- Subdevice #%d: %s", idx, snd_pcm_info_get_subdevice_name(pcminfo));
+				AFB_ApiDebug(mixer->api, "%s: -- Subdevice #%d: %s", __func__, idx, snd_pcm_info_get_subdevice_name(pcminfo));
             }
         }
-        AFB_ApiDebug(mixer->api, "AlsaDumpCard  => subdevice count=%d avaliable=%d", subdevCount, subdevAvail);
+        AFB_ApiDebug(mixer->api, "%s => subdevice count=%d avaliable=%d", __func__, subdevCount, subdevAvail);
     }
     return;
 
@@ -153,7 +154,7 @@ PUBLIC void AlsaDumpPcmParams(SoftMixerT *mixer, snd_pcm_hw_params_t *pcmHwParam
     snd_output_buffer_open(&output);
     snd_pcm_hw_params_dump(pcmHwParams, output);
     snd_output_buffer_string(output, &buffer);
-    AFB_ApiDebug(mixer->api, "%s:\n%s",__func__, buffer);
+    AFB_ApiDebug(mixer->api, "%s:\n--------------\n%s\n-------------",__func__, buffer);
     snd_output_close(output);
 }