Move to Dynamic Mixer API (work in progress)

1 files changed, 84 insertions, 0 deletions

diff --git a/plugins/alsa/alsa-api-source.c b/plugins/alsa/alsa-api-source.c
new file mode 100644
index 0000000..6315a14
--- /dev/null
+++ b/plugins/alsa/alsa-api-source.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2018 "IoT.bzh"
+ * Author Fulup Ar Foll <fulup@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#define _GNU_SOURCE  // needed for vasprintf
+
+#include "alsa-softmixer.h"
+#include <string.h>
+
+PUBLIC AlsaSndCtlT *ApiSourceFindSubdev(SoftMixerT *mixer, const char *target) {
+
+    // search for subdev into every registered source
+    for (int idx = 0; mixer->sources[idx]; idx++) {
+        if (mixer->sources[idx]->uid && !strcasecmp(mixer->sources[idx]->uid, target)) {
+            return mixer->sources[idx]->sndcard;
+        }
+    }
+    return NULL;
+}
+
+PUBLIC int ApiSourceAttach(SoftMixerT *mixer, AFB_ReqT request, const char *uid, json_object * argsJ) {
+
+    int index;
+    for (index = 0; index < mixer->max.sources; index++) {
+        if (!mixer->sources[index]) break;
+    }
+
+    if (index == mixer->max.sources) {
+        AFB_ReqFailF(request, "too-small", "mixer=%s max source=%d argsJ= %s", mixer->uid, mixer->max.sources, json_object_get_string(argsJ));
+        goto OnErrorExit;
+    }
+
+    switch (json_object_get_type(argsJ)) {
+        long count;
+        
+        case json_type_object:
+            mixer->sources[index] = ApiPcmAttachOne(mixer, uid, SND_PCM_STREAM_CAPTURE, argsJ);
+            if (!mixer->sources[index]) {
+                AFB_ReqFailF(request, "invalid-syntax", "mixer=%s invalid source= %s", mixer->uid, json_object_get_string(argsJ));
+                goto OnErrorExit;
+            }
+            break;
+
+        case json_type_array:
+            count = json_object_array_length(argsJ);
+            if (count > (mixer->max.sources - count)) {
+                AFB_ReqFailF(request, "too-small", "mixer=%s max source=%d argsJ= %s", mixer->uid, mixer->max.sources, json_object_get_string(argsJ));
+                goto OnErrorExit;
+
+            }
+
+            for (int idx = 0; idx < count; idx++) {
+                json_object *sourceJ = json_object_array_get_idx(argsJ, idx);
+                mixer->sources[index + idx] = ApiPcmAttachOne(mixer, uid, SND_PCM_STREAM_CAPTURE, sourceJ);
+                if (!mixer->sources[index + idx]) {
+                    AFB_ReqFailF(request, "invalid-syntax", "mixer=%s invalid source= %s", mixer->uid, json_object_get_string(sourceJ));
+                    goto OnErrorExit;
+                }
+            }
+            break;
+        default:
+            AFB_ReqFailF(request, "invalid-syntax", "mixer=%s sources invalid argsJ= %s", mixer->uid, json_object_get_string(argsJ));
+            goto OnErrorExit;
+    }
+
+    return 0;
+
+OnErrorExit:
+    return -1;
+}
\ No newline at end of file