+ audioCtxHandleT *ctx = (audioCtxHandleT*)request->context;
+ const char *value = getQueryValue (request, "value");
+ json_object *jresp;
+ int volume[8], i;
+ char *volume_i;
+ char volume_str[256];
+ int len_str = 0;
+
+ /* no "?value=" parameter : return current state */
+ if (!value) {
+ for (i = 0; i < 8; i++) {
+ ctx->volume[i] = _backend_get_volume (ctx, i);
+ snprintf (volume_str+len_str, sizeof(volume_str)-len_str, "%d,", ctx->volume[i]);
+ len_str = strlen(volume_str);
+ }
+ jresp = json_object_new_object();
+ json_object_object_add (jresp, "volume", json_object_new_string(volume_str));
+ }
+
+ /* "?value=" parameter, set volume */
+ else {
+ volume_i = strdup (value);
+ volume_i = strtok (volume_i, ",");
+ volume[0] = atoi (volume_i);
+
+ if ((100 < volume[0])||(volume[0] < 0)) {
+ free (volume_i);
+ request->errcode = MHD_HTTP_SERVICE_UNAVAILABLE;
+ return (jsonNewMessage (AFB_FAIL, "Volume must be between 0 and 100"));
+ }
+ ctx->volume[0] = volume[0];
+ _backend_set_volume (ctx, 0, ctx->volume[0]);
+ snprintf (volume_str, sizeof(volume_str), "%d,", ctx->volume[0]);
+
+ for (i = 1; i < 8; i++) {
+ volume_i = strtok (NULL, ",");
+ /* if there is only one value, set all channels to this one */
+ if (!volume_i && i == 1)
+ _backend_set_volume_all (ctx, ctx->volume[0]);
+ if (!volume_i || 100 < atoi(volume_i) < 0) {
+ ctx->volume[i] = _backend_get_volume (ctx, i);
+ } else {
+ ctx->volume[i] = atoi(volume_i);
+ _backend_set_volume (ctx, i, ctx->volume[i]);
+ }
+ len_str = strlen(volume_str);
+ snprintf (volume_str+len_str, sizeof(volume_str)-len_str, "%d,", ctx->volume[i]);
+ }
+ 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->context;
+ 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);
+ _backend_set_channels (ctx, 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->context;
+ const char *value = getQueryValue (request, "value");
+ json_object *jresp = json_object_new_object();
+
+ /* no "?value=" parameter : return current state */
+ if (!value) {
+ ctx->mute = _backend_get_mute (ctx);
+ ctx->mute ?
+ json_object_object_add (jresp, "mute", json_object_new_string ("on"))
+ : json_object_object_add (jresp, "mute", json_object_new_string ("off"));
+ }