binding: add initial media binding

Add initial media binding that populates playlist on
media insertion

Bug-AGL: SPEC-610
Change-Id: I24227f7c718606191ae3de72bd692e747353c919
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/mediaplayer-api.c b/mediaplayer-api.c
new file mode 100644
index 0000000..b03b246
--- /dev/null
+++ b/mediaplayer-api.c
@@ -0,0 +1,179 @@
+/* 
+ *   Copyright 2017 Konsulko Group
+ *
+ *   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
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <json-c/json.h>
+#include <afb/afb-binding.h>
+
+#include "mediaplayer-manager.h"
+
+const struct afb_binding_interface *afbitf;
+
+static struct afb_event media_added_event;
+static struct afb_event media_removed_event;
+
+/*
+ * @brief Subscribe for an event
+ *
+ * @param struct afb_req : an afb request structure
+ *
+ */
+static void subscribe(struct afb_req request)
+{
+	const char *value = afb_req_value(request, "value");
+	if(value) {
+		if(!strcasecmp(value, "media_added")) {
+			afb_req_subscribe(request, media_added_event);
+		} else if(!strcasecmp(value, "media_removed")) {
+			afb_req_subscribe(request, media_removed_event);
+		} else {
+			afb_req_fail(request, "failed", "Invalid event");
+			return;
+		}
+	}
+	afb_req_success(request, NULL, NULL);
+}
+
+/*
+ * @brief Unsubscribe for an event
+ *
+ * @param struct afb_req : an afb request structure
+ *
+ */
+static void unsubscribe(struct afb_req request)
+{
+	const char *value = afb_req_value(request, "value");
+	if(value) {
+		if(!strcasecmp(value, "media_added")) {
+			afb_req_unsubscribe(request, media_added_event);
+		} else if(!strcasecmp(value, "media_removed")) {
+			afb_req_unsubscribe(request, media_removed_event);
+		} else {
+			afb_req_fail(request, "failed", "Invalid event");
+			return;
+		}
+	}
+	afb_req_success(request, NULL, NULL);
+}
+
+static json_object *new_json_object_from_device(GList *list)
+{
+    json_object *jarray = json_object_new_array();
+    json_object *jresp = json_object_new_object();
+    json_object *jstring = NULL;
+    GList *l;
+
+    for (l = list; l; l = l->next)
+    {
+        jstring = json_object_new_string(l->data);
+        json_object_array_add(jarray, jstring);
+    }
+
+    json_object_object_add(jresp, "Media", jarray);
+
+    // TODO: Add media path
+    jstring = json_object_new_string("");
+    json_object_object_add(jresp, "Path", jstring);
+
+    return jresp;
+}
+
+static void media_results_get (struct afb_req request)
+{
+    GList *list;
+    json_object *jresp = NULL;
+
+    ListLock();
+    list = media_lightmediascanner_scan();
+    if (list == NULL) {
+        afb_req_fail(request, "failed", "media scan error");
+        ListUnlock();
+        return;
+    }
+
+    jresp = new_json_object_from_device(list);
+    ListUnlock();
+
+    if (jresp == NULL) {
+        afb_req_fail(request, "failed", "media parsing error");
+        return;
+    }
+
+    afb_req_success(request, jresp, "Media Results Displayed");
+}
+
+static void media_broadcast_device_added (GList *list)
+{
+    json_object *jresp = new_json_object_from_device(list);
+
+    afb_event_push(media_added_event, jresp);
+}
+
+/*
+ * TODO: support multiple devices
+ */
+static void media_broadcast_device_removed (const char *obj_path)
+{
+    json_object *jresp = json_object_new_object();
+    json_object *jstring = json_object_new_string(obj_path);
+
+    json_object_object_add(jresp, "Path", jstring);
+
+    afb_event_push(media_removed_event, jresp);
+}
+
+static const struct afb_verb_desc_v1 binding_verbs[] = {
+    { "media_result",	AFB_SESSION_CHECK, media_results_get,	"Media scan result" },
+    { "subscribe",	AFB_SESSION_CHECK, subscribe,		"Subscribe for an event" },
+    { "unsubscribe",	AFB_SESSION_CHECK, unsubscribe,		"Unsubscribe for an event" },
+    { NULL }
+};
+
+static const struct afb_binding binding_description = {
+    .type = AFB_BINDING_VERSION_1,
+    .v1 = {
+        .prefix = "media-manager",
+        .info = "mediaplayer API",
+        .verbs = binding_verbs,
+    }
+};
+
+const struct afb_binding
+*afbBindingV1Register(const struct afb_binding_interface *itf)
+{
+    afbitf = itf;
+
+    Binding_RegisterCallback_t API_Callback;
+    API_Callback.binding_device_added = media_broadcast_device_added;
+    API_Callback.binding_device_removed = media_broadcast_device_removed;
+    BindingAPIRegister(&API_Callback);
+
+    MediaPlayerManagerInit();
+
+    return &binding_description;
+}
+
+int afbBindingV1ServiceInit(struct afb_service service)
+{
+    media_added_event = afb_daemon_make_event(afbitf->daemon, "media_added");
+    media_removed_event = afb_daemon_make_event(afbitf->daemon, "media_removed");
+
+    return 0;
+}