Added bluez sound playback support

This adds sound playback for incoming sound from
connected bluetooth devices.
In this version, the softmixer relies on a modified
bluez-alsa version (https://github.com/iotbzh/bluez-alsa),
that provides an ioplug PCM bluezalsa connection proxy.

The softmixer api has a new verb to dynamically set the
device to listen to:

afb-client-demo ws://localhost:1234/api?token=\uuid=123 smixer bluezalsa_dev '{"interface":"hci0", "device":"F6:32:15:2A:80:70", "profile":"a2dp"}'

In this way it is possible to switch from a bluezalsa audio source to
another without any further configuration.

For now, only interface hci0 is supported.

This commit also migrates the softmixer binding to API v3

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

1 files changed, 4 insertions, 1 deletions

diff --git a/plugins/alsa/alsa-softmixer.h b/plugins/alsa/alsa-softmixer.h
index 96df8f3..e7218bd 100644
--- a/plugins/alsa/alsa-softmixer.h
+++ b/plugins/alsa/alsa-softmixer.h
@@ -86,6 +86,7 @@ typedef struct {
     const char *cardid;
     const char *name;
     const char *longname;
+    const char *pcmplug_params;
     int device;
     int subdev;
 } AlsaDevInfoT;
@@ -135,6 +136,8 @@ typedef struct {
 
     int tid;
     char* info;
+
+    int nbPcmFds;
     struct pollfd pollFds[2];
 
     sem_t sem;
@@ -279,7 +282,7 @@ PUBLIC snd_ctl_elem_id_t *AlsaCtlGetNameElemId(SoftMixerT *mixer, AlsaSndCtlT *s
 PUBLIC snd_ctl_t *AlsaCtlOpenCtl(SoftMixerT *mixer, const char *cardid) ;
 PUBLIC int CtlElemIdGetLong(SoftMixerT *mixer, AlsaSndCtlT *sndcard, snd_ctl_elem_id_t *elemId, long *value) ;
 PUBLIC int CtlElemIdSetLong(SoftMixerT *mixer, AlsaSndCtlT *sndcard, snd_ctl_elem_id_t *elemId, long value) ;
-PUBLIC snd_ctl_card_info_t *AlsaCtlGetInfo(SoftMixerT *mixer, const char *cardid) ;
+PUBLIC snd_ctl_card_info_t *AlsaCtlGetCardInfo(SoftMixerT *mixer, const char *cardid) ;
 PUBLIC int AlsaCtlNumidSetLong(SoftMixerT *mixer, AlsaSndCtlT *sndcard, int numid, long value) ;
 PUBLIC int AlsaCtlNumidGetLong(SoftMixerT *mixer, AlsaSndCtlT *sndcard, int numid, long* value) ;
 PUBLIC int AlsaCtlNameSetLong(SoftMixerT *mixer, AlsaSndCtlT *sndcard, const char *ctlName, long value) ;