Added create/close mixer API

1 files changed, 96 insertions, 27 deletions

diff --git a/plugins/alsa/alsa-api-mixer.c b/plugins/alsa/alsa-api-mixer.c
index db5f129..b910b9f 100644
--- a/plugins/alsa/alsa-api-mixer.c
+++ b/plugins/alsa/alsa-api-mixer.c
@@ -20,6 +20,8 @@
 
 #include "alsa-softmixer.h"
 #include <string.h>
+#include <pthread.h>
+
 
 // Fulup need to be cleanup with new controller version
 extern Lua2cWrapperT Lua2cWrap;
@@ -32,18 +34,18 @@ static void MixerApiVerbCB(AFB_ReqT request) {
     json_object *argsJ = afb_request_json(request);
     json_object *responseJ = json_object_new_object();
 
-    SoftMixerHandleT *mixerHandle = (SoftMixerHandleT*) afb_request_get_vcbdata(request);
+    SoftMixerHandleT *mixer = (SoftMixerHandleT*) afb_request_get_vcbdata(request);
     int error;
-    int close = 0;
+    int delete = 0;
 
     CtlSourceT *source = alloca(sizeof (CtlSourceT));
-    source->uid = mixerHandle->uid;
+    source->uid = mixer->uid;
     source->api = request->dynapi;
     source->request = request;
-    source->context = mixerHandle;
+    source->context = mixer;
 
     error = wrap_json_unpack(argsJ, "{s?b,s?o,s?o,s?o,s?o,s?o !}"
-            , "close", &close
+            , "delete", &delete
             , "list", &listJ
             , "backend", &backendJ
             , "frontend", &frontendJ
@@ -51,14 +53,57 @@ static void MixerApiVerbCB(AFB_ReqT request) {
             , "streams", &streamsJ
             );
     if (error) {
-        AFB_ReqFailF(request, "invalid syntax", "request missing 'uid|list|backend|frontend|zones|streams' mixer=%s", json_object_get_string(argsJ));
+        AFB_ReqFailF(request, "invalid-syntax", "request missing 'uid|list|backend|frontend|zones|streams' mixer=%s", json_object_get_string(argsJ));
         goto OnErrorExit;
     }
 
     // Free attached resources and free mixer
-    if (close) {
-        AFB_ReqFailF(request, "not implemented", "(Fulup) Close action still to be done mixer=%s", json_object_get_string(argsJ));
-        goto OnErrorExit;
+    if (delete) {
+        for (int idx; mixer->streams[idx].uid; idx++) {
+            AlsaLoopStreamT *stream = &mixer->streams[idx];
+
+            AFB_ApiNotice(source->api, "cleaning mixer=%s stream=%s", mixer->uid, stream->uid);
+
+            error = pthread_cancel(stream->copy.thread);
+            if (error) {
+                AFB_ReqFailF(request, "internal-error", "Fail to kill audio-stream threads mixer=%s", mixer->uid);
+                goto OnErrorExit;
+            }
+
+            char apiStreamVerb[128];
+            error = snprintf(apiStreamVerb, sizeof (apiStreamVerb), "%s/%s", mixer->uid, stream->uid);
+            if (error == sizeof (apiStreamVerb)) {
+                AFB_ApiError(source->api, "LoopStreams mixer=%s fail to Registry Stream API too long %s/%s", mixer->uid, mixer->uid, stream->uid);
+                goto OnErrorExit;
+            }
+
+            error = afb_dynapi_sub_verb(source->api, apiStreamVerb);
+            if (error) {
+                AFB_ApiError(source->api, "fail to Clean API verb=%s", apiStreamVerb);
+                goto OnErrorExit;
+            }
+
+            // free audio-stream dynamic structures
+            snd_pcm_close(mixer->streams[idx].copy.pcmIn);
+            snd_pcm_close(mixer->streams[idx].copy.pcmOut);
+            if (stream->copy.evtsrc) sd_event_source_unref(stream->copy.evtsrc);
+            if (stream->copy.sdLoop) sd_event_unref(stream->copy.sdLoop);
+
+        }
+
+        // registry is attached to frontend
+        if (mixer->frontend->registry)free(mixer->frontend->registry);
+
+        error = afb_dynapi_sub_verb(source->api, mixer->uid);
+        if (error) {
+            AFB_ApiError(source->api, "fail to Clean API verb=%s", mixer->uid);
+            goto OnErrorExit;
+        }
+
+        // finally free mixer handle
+        free(mixer);
+        responseJ = json_object_new_string("Fulup: delete might not clean everything properly");
+        goto OnSuccessExit;
     }
 
     if (listJ) {
@@ -72,14 +117,14 @@ static void MixerApiVerbCB(AFB_ReqT request) {
                 , "zones", &zones
                 );
         if (error) {
-            AFB_ReqFailF(request, "invalid syntax", "list missing 'uid|backend|frontend|zones|streams' list=%s", json_object_get_string(listJ));
+            AFB_ReqFailF(request, "invalid-syntax", "list missing 'uid|backend|frontend|zones|streams' list=%s", json_object_get_string(listJ));
             goto OnErrorExit;
         }
 
         if (streams) {
             streamsJ = json_object_new_array();
 
-            AlsaLoopStreamT *streams = mixerHandle->streams;
+            AlsaLoopStreamT *streams = mixer->streams;
             for (int idx = 0; streams[idx].uid; idx++) {
                 if (quiet) {
                     json_object_array_add(streamsJ, json_object_new_string(streams[idx].uid));
@@ -87,20 +132,20 @@ static void MixerApiVerbCB(AFB_ReqT request) {
                     json_object *numidJ;
                     wrap_json_pack(&numidJ, "{si,si}"
                             , "volume", streams[idx].volume
-                            , "mute",   streams[idx].mute
+                            , "mute", streams[idx].mute
                             );
                     wrap_json_pack(&valueJ, "{ss,so}"
                             , "uid", streams[idx].uid
                             , "numid", numidJ
                             );
                     json_object_array_add(streamsJ, valueJ);
-                    AFB_ApiWarning (request->dynapi, "stream=%s", json_object_get_string(streamsJ));
+                    AFB_ApiWarning(request->dynapi, "stream=%s", json_object_get_string(streamsJ));
                 }
-                
+
             }
             json_object_object_add(responseJ, "streams", streamsJ);
         }
-        
+
         if (backend || frontend || zones) {
             AFB_ReqFailF(request, "not implemented", "(Fulup) list action Still To Be Done");
             goto OnErrorExit;
@@ -109,7 +154,7 @@ static void MixerApiVerbCB(AFB_ReqT request) {
         AFB_ReqSucess(request, responseJ, NULL);
         return;
     }
-    
+
     if (backendJ) {
         error = SndBackend(source, backendJ);
         if (error) goto OnErrorExit;
@@ -130,8 +175,8 @@ static void MixerApiVerbCB(AFB_ReqT request) {
         if (error) goto OnErrorExit;
     }
 
-
-    AFB_ReqSucess(request, responseJ, mixerHandle->uid);
+OnSuccessExit:
+    AFB_ReqSucess(request, responseJ, mixer->uid);
     return;
 
 OnErrorExit:
@@ -139,7 +184,7 @@ OnErrorExit:
 }
 
 CTLP_LUA2C(_mixer_new_, source, argsJ, responseJ) {
-    SoftMixerHandleT *mixerHandle = calloc(1, sizeof (SoftMixerHandleT));
+    SoftMixerHandleT *mixer = calloc(1, sizeof (SoftMixerHandleT));
     json_object *backendJ = NULL, *frontendJ = NULL, *zonesJ = NULL, *streamsJ = NULL;
     int error;
     assert(source->api);
@@ -150,8 +195,8 @@ CTLP_LUA2C(_mixer_new_, source, argsJ, responseJ) {
     }
 
     error = wrap_json_unpack(argsJ, "{ss,s?s,s?o,s?o,s?o,s?o !}"
-            , "uid", &mixerHandle->uid
-            , "info", &mixerHandle->info
+            , "uid", &mixer->uid
+            , "info", &mixer->info
             , "backend", &backendJ
             , "frontend", &frontendJ
             , "zones", &zonesJ
@@ -162,18 +207,18 @@ CTLP_LUA2C(_mixer_new_, source, argsJ, responseJ) {
     }
 
     // make sure string do not get deleted
-    mixerHandle->uid = strdup(mixerHandle->uid);
-    if (mixerHandle->info)mixerHandle->info = strdup(mixerHandle->info);
+    mixer->uid = strdup(mixer->uid);
+    if (mixer->info)mixer->info = strdup(mixer->info);
 
     // create mixer verb within API.
-    error = afb_dynapi_add_verb(source->api, mixerHandle->uid, mixerHandle->info, MixerApiVerbCB, mixerHandle, NULL, 0);
+    error = afb_dynapi_add_verb(source->api, mixer->uid, mixer->info, MixerApiVerbCB, mixer, NULL, 0);
     if (error) {
-        AFB_ApiError(source->api, "_mixer_new_ mixer=%s fail to Registry API verb", mixerHandle->uid);
+        AFB_ApiError(source->api, "_mixer_new_ mixer=%s fail to Registry API verb", mixer->uid);
         return -1;
     }
 
     // make sure sub command get access to mixer handle
-    source->context = mixerHandle;
+    source->context = mixer;
 
     if (backendJ) {
         error = SndBackend(source, backendJ);
@@ -199,4 +244,28 @@ CTLP_LUA2C(_mixer_new_, source, argsJ, responseJ) {
 
 OnErrorExit:
     return -1;
-}
\ No newline at end of file
+}
+
+// provide a similar command but for API
+
+CTLP_CAPI(mixer_new, source, argsJ, queryJ) {
+    json_object * responseJ;
+
+    // merge static config args with dynamic one coming from the request
+    if (argsJ && json_object_get_type(argsJ) == json_type_object) {
+
+        json_object_object_foreach(argsJ, key, val) {
+            json_object_get(val);
+            json_object_object_add(queryJ, key, val);
+        }
+    }
+
+    int error = _mixer_new_(source, queryJ, &responseJ);
+
+    if (error)
+        AFB_ReqFailF(source->request, "fail-create", "invalid arguments");
+    else
+        AFB_ReqSucess(source->request, responseJ, NULL);
+
+    return error;
+}