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authorfulup <fulup.arfoll@iot.bzh>2017-07-01 00:22:00 +0200
committerfulup <fulup.arfoll@iot.bzh>2017-07-01 00:22:00 +0200
commitc326a053cdf8a4a9ce0fb02448293b45083d553c (patch)
treeaa1209094f735e96ad506615fe04d375b773543a /ALSA-afb/Alsa-SetGet.c
parent10c42e135b22bf323836100ede042ec47ddb22a1 (diff)
Ongoing work
Diffstat (limited to 'ALSA-afb/Alsa-SetGet.c')
-rw-r--r--ALSA-afb/Alsa-SetGet.c318
1 files changed, 10 insertions, 308 deletions
diff --git a/ALSA-afb/Alsa-SetGet.c b/ALSA-afb/Alsa-SetGet.c
index d6cf50d..280078c 100644
--- a/ALSA-afb/Alsa-SetGet.c
+++ b/ALSA-afb/Alsa-SetGet.c
@@ -26,41 +26,8 @@
#define _GNU_SOURCE // needed for vasprintf
-#include <alsa/asoundlib.h>
-#include <systemd/sd-event.h>
-
#include "Alsa-ApiHat.h"
-// use to store crl numid user request
-typedef struct {
- unsigned int numId;
- json_object *jToken;
- json_object *jValues;
- int used;
-} ctlRequestT;
-
-// generic sndctrl event handle hook to event callback when pooling
-typedef struct {
- struct pollfd pfds;
- sd_event_source *src;
- snd_ctl_t *ctlDev;
- int quiet;
- struct afb_event afbevt;
-} evtHandleT;
-
-typedef struct {
- int ucount;
- int cardId;
- evtHandleT *evtHandle;
-} sndHandleT;
-
-typedef struct {
- char *apiprefix;
- char *shortname;
-}cardRegistryT;
-
-cardRegistryT *cardRegistry[MAX_SND_CARD+1];
-
PUBLIC void NumidsListParse (queryValuesT *queryValues, ctlRequestT *ctlRequest) {
json_object *jValues;
int length;
@@ -103,7 +70,7 @@ PUBLIC void NumidsListParse (queryValuesT *queryValues, ctlRequestT *ctlRequest)
case json_type_object:
// numid+values formated as {id:xxx, val:[aa,bb...,nn]}
if (!json_object_object_get_ex (ctlRequest[idx].jToken,"id", &jId) || !json_object_object_get_ex (ctlRequest[idx].jToken,"val",&jVal)) {
- NOTICE("Invalid Json=%s missing 'id'|'val'", json_object_get_string(ctlRequest[idx].jToken));
+ AFB_NOTICE("Invalid Json=%s missing 'id'|'val'", json_object_get_string(ctlRequest[idx].jToken));
ctlRequest[idx].used=-1;
} else {
ctlRequest[idx].numId =json_object_get_int(jId);
@@ -478,7 +445,7 @@ STATIC json_object *getControlAcl (snd_ctl_elem_info_t *info) {
}
// process ALSA control and store resulting value into ctlRequest
-STATIC int alsaSetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRequestT *ctlRequest) {
+PUBLIC int alsaSetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRequestT *ctlRequest) {
snd_ctl_elem_value_t *elemData;
snd_ctl_elem_info_t *elemInfo;
int count, length, err, valueIsArray;
@@ -490,13 +457,13 @@ STATIC int alsaSetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRe
snd_ctl_elem_info_alloca(&elemInfo);
snd_ctl_elem_info_set_id(elemInfo, elemId); // map ctlInfo to ctlId elemInfo is updated !!!
if (snd_ctl_elem_info(ctlDev, elemInfo) < 0) {
- NOTICE( "Fail to load ALSA NUMID=%d Values=[%s]", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues));
+ AFB_NOTICE( "Fail to load ALSA NUMID=%d Values=[%s]", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues));
goto OnErrorExit;
}
snd_ctl_elem_info_get_id(elemInfo, elemId); // map ctlInfo to ctlId elemInfo is updated !!!
if (!snd_ctl_elem_info_is_writable(elemInfo)) {
- NOTICE( "Not Writable ALSA NUMID=%d Values=[%s]", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues));
+ AFB_NOTICE( "Not Writable ALSA NUMID=%d Values=[%s]", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues));
goto OnErrorExit;
}
@@ -515,12 +482,13 @@ STATIC int alsaSetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRe
break;
default:
count =0;
+ length = 0;
break;
}
if (count == 0 || count < length) {
- NOTICE( "Invalid values NUMID='%d' Values='%s' count='%d' wanted='%d'", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues), length, count);
+ AFB_NOTICE( "Invalid values NUMID='%d' Values='%s' count='%d' wanted='%d'", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues), length, count);
goto OnErrorExit;
}
@@ -542,7 +510,7 @@ STATIC int alsaSetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRe
err = snd_ctl_elem_write(ctlDev, elemData);
if (err < 0) {
- NOTICE( "Fail to write ALSA NUMID=%d Values=[%s] Error=%s", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues), snd_strerror(err));
+ AFB_NOTICE( "Fail to write ALSA NUMID=%d Values=[%s] Error=%s", ctlRequest->numId, json_object_to_json_string(ctlRequest->jValues), snd_strerror(err));
goto OnErrorExit;
}
@@ -555,7 +523,7 @@ STATIC int alsaSetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRe
}
// process ALSA control and store then into ctlRequest
-STATIC int alsaGetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRequestT *ctlRequest, int quiet) {
+PUBLIC int alsaGetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRequestT *ctlRequest, int quiet) {
snd_ctl_elem_type_t elemType;
snd_ctl_elem_value_t *elemData;
snd_ctl_elem_info_t *elemInfo;
@@ -681,7 +649,7 @@ STATIC int alsaGetSingleCtl (snd_ctl_t *ctlDev, snd_ctl_elem_id_t *elemId, ctlRe
}
// assign multiple control to the same value
-PUBLIC void alsaSetGetCtls (afb_req request, ActionSetGetT action) {
+STATIC void alsaSetGetCtls (afb_req request, ActionSetGetT action) {
ctlRequestT *ctlRequest;
const char *warmsg=NULL;
int err=0, status=0;
@@ -736,7 +704,7 @@ PUBLIC void alsaSetGetCtls (afb_req request, ActionSetGetT action) {
} else {
int numid = snd_ctl_elem_list_get_numid(ctlList, ctlIndex);
if (numid < 0) {
- NOTICE("snd_ctl_elem_list_get_numid index=%d fail", ctlIndex);
+ AFB_NOTICE("snd_ctl_elem_list_get_numid index=%d fail", ctlIndex);
continue;
}
// check if current control was requested in query numids list
@@ -814,269 +782,3 @@ PUBLIC void alsaSetCtls (afb_req request) {
}
-// This routine is called when ALSA event are fired
-STATIC int sndCtlEventCB (sd_event_source* src, int fd, uint32_t revents, void* userData) {
- int err;
- evtHandleT *evtHandle = (evtHandleT*)userData;
- snd_ctl_event_t *eventId;
- json_object *ctlEventJ;
- unsigned int mask;
- int iface;
- int device;
- int subdev;
- const char*devname;
- ctlRequestT ctlRequest;
- snd_ctl_elem_id_t *elemId;
-
- if ((revents & EPOLLHUP) != 0) {
- NOTICE( "SndCtl hanghup [car disconnected]");
- goto ExitOnSucess;
- }
-
- if ((revents & EPOLLIN) != 0) {
-
- // initialise event structure on stack
- snd_ctl_event_alloca(&eventId);
- snd_ctl_elem_id_alloca(&elemId);
-
- err = snd_ctl_read(evtHandle->ctlDev, eventId);
- if (err < 0) goto OnErrorExit;
-
- // we only process sndctrl element
- if (snd_ctl_event_get_type(eventId) != SND_CTL_EVENT_ELEM) goto ExitOnSucess;
-
- // we only process value changed events
- mask = snd_ctl_event_elem_get_mask(eventId);
- if (!(mask & SND_CTL_EVENT_MASK_VALUE)) goto ExitOnSucess;
-
- snd_ctl_event_elem_get_id (eventId, elemId);
-
- err = alsaGetSingleCtl (evtHandle->ctlDev, elemId, &ctlRequest, evtHandle->quiet);
- if (err) goto OnErrorExit;
-
- iface = snd_ctl_event_elem_get_interface(eventId);
- device = snd_ctl_event_elem_get_device(eventId);
- subdev = snd_ctl_event_elem_get_subdevice(eventId);
- devname= snd_ctl_event_elem_get_name(eventId);
-
- // proxy ctlevent as a binder event
- ctlEventJ = json_object_new_object();
- json_object_object_add(ctlEventJ, "device" ,json_object_new_int (device));
- json_object_object_add(ctlEventJ, "subdev" ,json_object_new_int (subdev));
- if (evtHandle->quiet < 2) {
- json_object_object_add(ctlEventJ, "iface" ,json_object_new_int (iface));
- json_object_object_add(ctlEventJ, "devname",json_object_new_string (devname));
- }
- if (ctlRequest.jValues) (json_object_object_add(ctlEventJ, "values" ,ctlRequest.jValues));
- DEBUG( "sndCtlEventCB=%s", json_object_get_string(ctlEventJ));
- afb_event_push(evtHandle->afbevt, ctlEventJ);
-
- }
-
- ExitOnSucess:
- return 0;
-
- OnErrorExit:
- WARNING ("sndCtlEventCB: ignored unsupported event type");
- return (0);
-}
-
-// Subscribe to every Alsa CtlEvent send by a given board
-PUBLIC void alsaSubcribe (afb_req request) {
- static sndHandleT sndHandles[MAX_SND_CARD];
- evtHandleT *evtHandle;
- snd_ctl_t *ctlDev;
- int err, idx, cardId, idxFree=-1;
- snd_ctl_card_info_t *cardinfo;
- queryValuesT queryValues;
-
-
- err = alsaCheckQuery (request, &queryValues);
- if (err) goto OnErrorExit;
-
-
- // open control interface for devid
- err = snd_ctl_open(&ctlDev, queryValues.devid, SND_CTL_READONLY);
- if (err < 0) {
- ctlDev=NULL;
- afb_req_fail_f (request, "devid-unknown", "SndCard devid=%s Not Found err=%s", queryValues.devid, snd_strerror(err));
- goto OnErrorExit;
- }
-
- snd_ctl_card_info_alloca(&cardinfo);
- if ((err = snd_ctl_card_info(ctlDev, cardinfo)) < 0) {
- afb_req_fail_f (request, "devid-invalid", "SndCard devid=%s Not Found err=%s", queryValues.devid, snd_strerror(err));
- goto OnErrorExit;
- }
-
- cardId=snd_ctl_card_info_get_card(cardinfo);
-
- // search for an existing subscription and mark 1st free slot
- for (idx= 0; idx < MAX_SND_CARD; idx ++) {
- if (sndHandles[idx].ucount > 0 && cardId == sndHandles[idx].cardId) {
- evtHandle= sndHandles[idx].evtHandle;
- break;
- } else if (idxFree == -1) idxFree= idx;
- };
-
- // if not subscription exist for the event let's create one
- if (idx == MAX_SND_CARD) {
-
- // reach MAX_SND_CARD event registration
- if (idxFree == -1) {
- afb_req_fail_f (request, "register-toomany", "Cannot register new event Maxcard==%d", idx);
- goto OnErrorExit;
- }
-
- evtHandle = malloc (sizeof(evtHandleT));
- evtHandle->ctlDev = ctlDev;
- evtHandle->quiet = queryValues.quiet;
- sndHandles[idxFree].ucount = 0;
- sndHandles[idxFree].cardId = cardId;
- sndHandles[idxFree].evtHandle = evtHandle;
-
- // subscribe for sndctl events attached to devid
- err = snd_ctl_subscribe_events(evtHandle->ctlDev, 1);
- if (err < 0) {
- afb_req_fail_f (request, "subscribe-fail", "Cannot subscribe events from devid=%s err=%d", queryValues.devid, err);
- goto OnErrorExit;
- }
-
- // get pollfd attach to this sound board
- snd_ctl_poll_descriptors(evtHandle->ctlDev, &evtHandle->pfds, 1);
-
- // register sound event to binder main loop
- err = sd_event_add_io(afb_daemon_get_event_loop(), &evtHandle->src, evtHandle->pfds.fd, EPOLLIN, sndCtlEventCB, evtHandle);
- if (err < 0) {
- afb_req_fail_f (request, "register-mainloop", "Cannot hook events to mainloop devid=%s err=%d", queryValues.devid, err);
- goto OnErrorExit;
- }
-
- // create binder event attached to devid name
- evtHandle->afbevt = afb_daemon_make_event (queryValues.devid);
- if (!afb_event_is_valid (evtHandle->afbevt)) {
- afb_req_fail_f (request, "register-event", "Cannot register new binder event name=%s", queryValues.devid);
- goto OnErrorExit;
- }
-
- // everything looks OK let's move forward
- idx=idxFree;
- }
-
- // subscribe to binder event
- err = afb_req_subscribe(request, evtHandle->afbevt);
- if (err != 0) {
- afb_req_fail_f (request, "register-eventname", "Cannot subscribe binder event name=%s [invalid channel]", queryValues.devid);
- goto OnErrorExit;
- }
-
- // increase usage count and return success
- sndHandles[idx].ucount ++;
- afb_req_success(request, NULL, NULL);
- return;
-
- OnErrorExit:
- if (ctlDev) snd_ctl_close(ctlDev);
- return;
-}
-
-// Subscribe to every Alsa CtlEvent send by a given board
-PUBLIC void alsaGetCardId (afb_req request) {
- char devid [10];
- const char *devname, *shortname, *longname;
- int card, err, index, idx;
- json_object *respJson;
- snd_ctl_t *ctlDev;
- snd_ctl_card_info_t *cardinfo;
-
- const char *sndname = afb_req_value(request, "sndname");
- if (sndname == NULL) {
- afb_req_fail_f (request, "argument-missing", "sndname=SndCardName missing");
- goto OnErrorExit;
- }
-
- // loop on potential card number
- snd_ctl_card_info_alloca(&cardinfo);
- for (card =0; card < MAX_SND_CARD; card++) {
-
- // build card devid and probe it
- snprintf (devid, sizeof(devid), "hw:%i", card);
-
- // open control interface for devid
- err = snd_ctl_open(&ctlDev, devid, SND_CTL_READONLY);
- if (err < 0) continue;
-
- // extract sound card information
- snd_ctl_card_info(ctlDev, cardinfo);
- index = snd_ctl_card_info_get_card(cardinfo);
- devname = snd_ctl_card_info_get_id(cardinfo);
- shortname= snd_ctl_card_info_get_name(cardinfo);
- longname = snd_ctl_card_info_get_longname(cardinfo);
-
- // check if short|long name match
- if (!strcmp (sndname, devname)) break;
- if (!strcmp (sndname, shortname)) break;
- if (!strcmp (sndname, longname)) break;
- }
-
- if (card == MAX_SND_CARD) {
- afb_req_fail_f (request, "ctlDev-notfound", "Fail to find card with name=%s", sndname);
- goto OnErrorExit;
- }
-
- // proxy ctlevent as a binder event
- respJson = json_object_new_object();
- json_object_object_add(respJson, "index" ,json_object_new_int (index));
- json_object_object_add(respJson, "devid" ,json_object_new_string (devid));
- json_object_object_add(respJson, "shortname" ,json_object_new_string (shortname));
- json_object_object_add(respJson, "longname" ,json_object_new_string (longname));
-
- // search for a HAL binder card mapping name to api prefix
- for (idx=0; idx < MAX_SND_CARD; idx++) {
- if (!strcmp (cardRegistry[idx]->shortname, shortname)) break;
- }
- // if a match if found, then we have an HAL for this board let's return its value
- if (idx < MAX_SND_CARD) json_object_object_add(respJson, "halapi",json_object_new_string (cardRegistry[idx]->apiprefix));
-
- afb_req_success(request, respJson, NULL);
- return;
-
- OnErrorExit:
- return;
-}
-
-// Register loaded HAL with board Name and API prefix
-PUBLIC void alsaRegisterHal (afb_req request) {
- static int index=0;
- const char *shortname, *apiPrefix;
-
- apiPrefix = afb_req_value(request, "prefix");
- if (apiPrefix == NULL) {
- afb_req_fail_f (request, "argument-missing", "prefix=BindingApiPrefix missing");
- goto OnErrorExit;
- }
-
- shortname = afb_req_value(request, "name");
- if (shortname == NULL) {
- afb_req_fail_f (request, "argument-missing", "sndname=SndCardName missing");
- goto OnErrorExit;
- }
-
- if (index == MAX_SND_CARD) {
- afb_req_fail_f (request, "alsahal-toomany", "Fail to register sndname=[%s]", shortname);
- goto OnErrorExit;
- }
-
- cardRegistry[index]= malloc (sizeof(cardRegistry));
- cardRegistry[index]->apiprefix=strdup(apiPrefix);
- cardRegistry[index]->shortname=strdup(shortname);
- index++;cardRegistry[index]=NULL;
-
- // when OK nothing to return
- afb_req_success(request, NULL, NULL);
- return;
-
- OnErrorExit:
- return;
-}
-