Finalize Audio plugin

Signed-off-by: Manuel Bachmann <mbc@iot.bzh>

1 files changed, 119 insertions, 7 deletions

diff --git a/plugins/audio/audio-api.c b/plugins/audio/audio-api.c
index 547f97ed..0fcc73d1 100644
--- a/plugins/audio/audio-api.c
+++ b/plugins/audio/audio-api.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2015 "IoT.bzh"
- * Author "Fulup Ar Foll"
+ * Author "Manuel Bachmann"
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -28,17 +28,29 @@ STATIC audioCtxHandleT* initAudioCtx () {
     audioCtxHandleT *ctx;
 
     ctx = malloc (sizeof(audioCtxHandleT));
+    ctx->idx = -1;
     ctx->volume = 25;
-    ctx->rate = 22050;
     ctx->channels = 2;
+    ctx->mute = 0;
 
     return ctx;
 }
 
+STATIC AFB_error releaseAudio (audioCtxHandleT *ctx) {
+
+    /* power it off */
+    _alsa_free (ctx->idx);
+
+    /* clean client context */
+    ctx->idx = -1;
+
+    return AFB_SUCCESS;
+}
+
 /* called when client session dies [e.g. client quits for more than 15mns] */
 STATIC json_object* freeAudio (AFB_clientCtx *client) {
 
-    //releaseAudio (client->plugin->handle, client->ctx);
+    releaseAudio (client->ctx);
     free (client->ctx);
     
     return jsonNewMessage (AFB_SUCCESS, "Released radio and client context");
@@ -51,6 +63,7 @@ STATIC json_object* init (AFB_request *request) {       /* AFB_SESSION_CREATE */
 
     audioCtxHandleT *ctx;
     json_object *jresp;
+    int idx;
 
     /* create a private client context */
     ctx = initAudioCtx();
@@ -60,13 +73,112 @@ STATIC json_object* init (AFB_request *request) {       /* AFB_SESSION_CREATE */
     
     jresp = json_object_new_object();
     json_object_object_add (jresp, "token", json_object_new_string (request->client->token));
+    return jresp;
 }
 
+STATIC json_object* volume (AFB_request *request) {      /* AFB_SESSION_CHECK */
 
-STATIC AFB_restapi pluginApis[]= {
-  {"init"   , AFB_SESSION_CREATE, (AFB_apiCB)init       , "Audio API - init"},
-//  {"error"  , AFB_SESSION_CHECK,   (AFB_apiCB)wrongApi   , "Ping Application Framework"},
+    audioCtxHandleT *ctx = (audioCtxHandleT*)request->client->ctx;
+    const char *value = getQueryValue (request, "value");
+    json_object *jresp;
+    int volume;
+    char volume_str[256];
+
+    /* no "?value=" parameter : return current state */
+    if (!value) {
+        ctx->volume = _alsa_get_volume (ctx->idx);
+        snprintf (volume_str, sizeof(volume_str), "%d", ctx->volume);
+        jresp = json_object_new_object();
+        json_object_object_add (jresp, "volume", json_object_new_string(volume_str));
+    }
+
+    /* "?value=" parameter, set volume */
+    else {
+        volume = atoi (value);
+        if (100 < volume < 0) {
+            request->errcode = MHD_HTTP_SERVICE_UNAVAILABLE;
+            return (jsonNewMessage (AFB_FAIL, "Volume must be between 0 and 100"));
+        }
+        ctx->volume = volume;
+        _alsa_set_volume (ctx->idx, ctx->volume);
+
+        snprintf (volume_str, sizeof(volume_str), "%d", ctx->volume);
+        jresp = json_object_new_object();
+        json_object_object_add (jresp, "volume", json_object_new_string(volume_str));
+    }
+
+    return jresp;
+}
+
+STATIC json_object* channels (AFB_request *request) {    /* AFB_SESSION_CHECK */
+
+    audioCtxHandleT *ctx = (audioCtxHandleT*)request->client->ctx;
+    const char *value = getQueryValue (request, "value");
+    json_object *jresp = json_object_new_object();
+    char channels_str[256];
+
+    /* no "?value=" parameter : return current state */
+    if (!value) {
+        snprintf (channels_str, sizeof(channels_str), "%d", ctx->channels);
+        json_object_object_add (jresp, "channels", json_object_new_string (channels_str));
+    }
+
+    /* "?value=" parameter, set channels */
+    else {
+        ctx->channels = atoi (value);
+        _alsa_set_channels (ctx->idx, ctx->channels);
+
+        snprintf (channels_str, sizeof(channels_str), "%d", ctx->channels);
+        json_object_object_add (jresp, "channels", json_object_new_string (channels_str));
+    }
+
+    return jresp;
+}
 
+STATIC json_object* mute (AFB_request *request) {        /* AFB_SESSION_CHECK */
+
+    audioCtxHandleT *ctx = (audioCtxHandleT*)request->client->ctx;
+    const char *value = getQueryValue (request, "value");
+    json_object *jresp = json_object_new_object();
+
+    /* no "?value=" parameter : return current state */
+    if (!value) {
+        ctx->mute = _alsa_get_mute (ctx->idx);
+        ctx->mute ?
+            json_object_object_add (jresp, "mute", json_object_new_string ("on"))
+          : json_object_object_add (jresp, "mute", json_object_new_string ("off"));
+    }
+
+    /* "?value=" parameter is "1" or "on" */
+    else if ( atoi(value) == 1 || !strcasecmp(value, "on") ) {
+        ctx->mute = 1;
+        _alsa_set_mute (ctx->idx, ctx->mute);
+
+        json_object_object_add (jresp, "mute", json_object_new_string ("on"));
+    }
+
+    /* "?value=" parameter is "0" or "off" */
+    if ( atoi(value) == 0 || !strcasecmp(value, "off") ) {
+        ctx->mute = 0;
+        _alsa_set_mute (ctx->idx, ctx->mute);
+
+        json_object_object_add (jresp, "mute", json_object_new_string ("off"));
+    }
+
+    return jresp;
+}
+
+STATIC json_object* status (AFB_request *request) {      /* AFB_SESSION_RENEW */
+    return NULL;
+}
+
+
+STATIC AFB_restapi pluginApis[]= {
+  {"init"    , AFB_SESSION_CREATE, (AFB_apiCB)init      , "Audio API - init"},
+  {"volume"  , AFB_SESSION_CHECK,  (AFB_apiCB)volume    , "Audio API - volume"},
+  {"channels", AFB_SESSION_CHECK,  (AFB_apiCB)channels  , "Audio API - channels"},
+  {"mute"    , AFB_SESSION_CHECK,  (AFB_apiCB)mute      , "Audio API - mute"},
+  {"status"  , AFB_SESSION_RENEW,  (AFB_apiCB)status    , "Audio API - status"},
   {NULL}
 };
 
@@ -80,4 +192,4 @@ PUBLIC AFB_plugin *audioRegister () {
     plugin->freeCtxCB = freeAudio;
 
     return (plugin);
-};
\ No newline at end of file
+};