/*
* Copyright (C) 2015 "IoT.bzh"
+ * 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
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ * 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
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * http://www.apache.org/licenses/LICENSE-2.0
*
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * 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 <strings.h>
+#include <json-c/json.h>
+
#include "radio-api.h"
#include "radio-rtlsdr.h"
+#include "afb-plugin.h"
+#include "afb-req-itf.h"
+
/* ********************************************************
FULUP integration proposal with client session context
/* ------ LOCAL HELPER FUNCTIONS --------- */
+static pluginHandleT *the_radio = NULL;
+
/* detect new radio devices */
-STATIC void updateRadioDevList(pluginHandleT *handle) {
+void updateRadioDevList(pluginHandleT *handle) {
int idx;
}
/* global plugin context creation ; at loading time [radio devices might not be visible] */
-STATIC pluginHandleT* initRadioPlugin() {
+static void initRadioPlugin() {
- pluginHandleT *handle;
+ pluginHandleT *handle = the_radio;
handle = calloc (1, sizeof(pluginHandleT));
updateRadioDevList (handle);
-
- return handle;
}
/* private client context creation ; default values */
-STATIC radioCtxHandleT* initRadioCtx () {
+static radioCtxHandleT* initRadioCtx () {
radioCtxHandleT *ctx;
}
/* reserve a radio device for requesting client, power it on */
-STATIC AFB_error reserveRadio (pluginHandleT *handle, radioCtxHandleT *ctx) {
- int idx;
+unsigned char reserveRadio (pluginHandleT *handle, radioCtxHandleT *ctx) {
+ unsigned int idx;
/* loop on all devices, find an unused one */
for (idx = 0; idx < _radio_dev_count(); idx++) {
if (idx == MAX_RADIO) break;
if (handle->radios[idx]->used == FALSE) goto found_radio; /* found one */
}
- return AFB_FAIL;
+ return 0;
found_radio:
/* try to power it on, passing client context info such as frequency... */
ctx->radio = handle->radios[idx];
ctx->idx = idx;
- return AFB_SUCCESS;
+ return 1;
}
/* free a radio device from requesting client, power it off */
-STATIC AFB_error releaseRadio (pluginHandleT *handle, radioCtxHandleT *ctx) {
+unsigned char releaseRadio (pluginHandleT *handle, radioCtxHandleT *ctx) {
+
+ /* stop playing if it was doing this (blocks otherwise) */
+ if (ctx->is_playing) {
+ ctx->is_playing = 0;
+ _radio_stop (ctx->idx);
+ }
- /* power it off */
- _radio_off (ctx->idx);
+ /* power it off */
+ _radio_off (ctx->idx);
- /* globally mark it as free */
- handle->radios[ctx->idx]->used = FALSE;
+ /* globally mark it as free */
+ handle->radios[ctx->idx]->used = FALSE;
- /* clean client context */
- ctx->radio = NULL;
- ctx->idx = -1;
+ /* clean client context */
+ ctx->radio = NULL;
+ ctx->idx = -1;
- return AFB_SUCCESS;
+ return 1;
}
/* called when client session dies [e.g. client quits for more than 15mns] */
-STATIC json_object* freeRadio (AFB_clientCtx *client) {
+static void freeRadio (void *context) {
- releaseRadio (client->plugin->handle, client->ctx);
- free (client->ctx);
-
- return jsonNewMessage (AFB_SUCCESS, "Released radio and client context");
+ releaseRadio (the_radio, context);
+ free (context);
}
/* ------ PUBLIC PLUGIN FUNCTIONS --------- */
-STATIC json_object* power (AFB_request *request) { /* AFB_SESSION_CREATE */
-
- pluginHandleT *handle = request->client->plugin->handle;
- radioCtxHandleT *ctx = (radioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
+static void init (struct afb_req request) { /* AFB_SESSION_CHECK */
+
+ radioCtxHandleT *ctx = (radioCtxHandleT*) afb_req_context_get(request);
json_object *jresp;
- /* create a private client context if needed */
- if (!ctx) ctx = initRadioCtx();
+ /* create a private client context */
+ if (!ctx) {
+ ctx = initRadioCtx();
+ afb_req_context_set (request, ctx, free);
+ }
+
+ jresp = json_object_new_object();
+ json_object_object_add(jresp, "init", json_object_new_string ("success"));
+ afb_req_success (request, jresp, "Radio - Initialized");
+}
+
+static void power (struct afb_req request) { /* AFB_SESSION_CHECK */
+
+ pluginHandleT *handle = the_radio;
+ radioCtxHandleT *ctx = (radioCtxHandleT*) afb_req_context_get(request);
+ const char *value = afb_req_value (request, "value");
+ json_object *jresp;
/* no "?value=" parameter : return current state */
if (!value) {
: json_object_object_add (jresp, "power", json_object_new_string ("off"));
}
- /* "?value=" parameter is "1" or "on" */
- else if ( atoi(value) == 1 || !strcasecmp(value, "on") ) {
+ /* "?value=" parameter is "1" or "true" */
+ else if ( atoi(value) == 1 || !strcasecmp(value, "true") ) {
if (!ctx->radio) {
- if (reserveRadio (handle, ctx) == AFB_FAIL) {
- request->errcode = MHD_HTTP_SERVICE_UNAVAILABLE;
- return (jsonNewMessage (AFB_FAIL, "No more radio devices available"));
+ if (!reserveRadio (handle, ctx)) {
+ afb_req_fail (request, "failed", "no more radio devices available");
+ return;
}
}
jresp = json_object_new_object();
json_object_object_add (jresp, "power", json_object_new_string ("on"));
}
- /* "?value=" parameter is "0" or "off" */
- else if ( atoi(value) == 0 || !strcasecmp(value, "off") ) {
+ /* "?value=" parameter is "0" or "false" */
+ else if ( atoi(value) == 0 || !strcasecmp(value, "false") ) {
if (ctx->radio) {
- if (releaseRadio (handle, ctx) == AFB_FAIL) {
- request->errcode = MHD_HTTP_SERVICE_UNAVAILABLE;
- return (jsonNewMessage (AFB_FAIL, "Unable to release radio device"));
+ if (!releaseRadio (handle, ctx)) {
+ afb_req_fail (request, "failed", "Unable to release radio device");
+ return;
}
}
jresp = json_object_new_object();
json_object_object_add (jresp, "power", json_object_new_string ("off"));
}
+ else
+ jresp = NULL;
- return jresp;
+ afb_req_success (request, jresp, "Radio - Power set");
}
-STATIC json_object* mode (AFB_request *request) { /* AFB_SESSION_CHECK */
+static void mode (struct afb_req request) { /* AFB_SESSION_CHECK */
- radioCtxHandleT *ctx = (radioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
- json_object *jresp;
+ radioCtxHandleT *ctx = (radioCtxHandleT*) afb_req_context_get(request);
+ const char *value = afb_req_value (request, "value");
+ json_object *jresp = json_object_new_object();
/* no "?value=" parameter : return current state */
- if (!value) {
- jresp = json_object_new_object();
+ if (!value || !ctx->radio) {
ctx->mode ?
json_object_object_add (jresp, "mode", json_object_new_string ("AM"))
: json_object_object_add (jresp, "mode", json_object_new_string ("FM"));
}
- /* "?value=" parameter is "1" or "on" */
+ /* "?value=" parameter is "1" or "AM" */
else if ( atoi(value) == 1 || !strcasecmp(value, "AM") ) {
ctx->mode = AM;
_radio_set_mode (ctx->idx, ctx->mode);
-
- jresp = json_object_new_object();
json_object_object_add (jresp, "mode", json_object_new_string ("AM"));
}
- /* "?value=" parameter is "0" or "off" */
+ /* "?value=" parameter is "0" or "FM" */
else if ( atoi(value) == 0 || !strcasecmp(value, "FM") ) {
ctx->mode = FM;
_radio_set_mode (ctx->idx, ctx->mode);
-
- jresp = json_object_new_object();
json_object_object_add (jresp, "mode", json_object_new_string ("FM"));
}
-
- return jresp;
+
+ afb_req_success (request, jresp, "Radio - Mode set");
}
-STATIC json_object* freq (AFB_request *request) { /* AFB_SESSION_CHECK */
+static void freq (struct afb_req request) { /* AFB_SESSION_CHECK */
- radioCtxHandleT *ctx = (radioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
+ radioCtxHandleT *ctx = (radioCtxHandleT*) afb_req_context_get(request);
+ const char *value = afb_req_value (request, "value");
json_object *jresp = json_object_new_object();
+ double freq;
char freq_str[256];
/* no "?value=" parameter : return current state */
- if (!value) {
+ if (!value || !ctx->radio) {
snprintf (freq_str, sizeof(freq_str), "%f", ctx->freq);
json_object_object_add (jresp, "freq", json_object_new_string (freq_str));
}
/* "?value=" parameter, set frequency */
else {
- ctx->freq = strtof (value, NULL);
- _radio_set_freq (ctx->idx, ctx->freq);
-
+ freq = strtod (value, NULL);
+ _radio_set_freq (ctx->idx, freq);
+ ctx->freq = (float)freq;
+
snprintf (freq_str, sizeof(freq_str), "%f", ctx->freq);
json_object_object_add (jresp, "freq", json_object_new_string (freq_str));
}
-
- return jresp;
+
+ afb_req_success (request, jresp, "Radio - Frequency Set");
}
-STATIC json_object* mute (AFB_request *request) { /* AFB_SESSION_CHECK */
+static void mute (struct afb_req request) { /* AFB_SESSION_CHECK */
- radioCtxHandleT *ctx = (radioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
- json_object *jresp;
- char *mute_str;
+ radioCtxHandleT *ctx = (radioCtxHandleT*) afb_req_context_get(request);
+ const char *value = afb_req_value (request, "value");
+ json_object *jresp = json_object_new_object();
/* no "?value=" parameter : return current state */
- if (!value) {
+ if (!value || !ctx->radio) {
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") ) {
+ /* "?value=" parameter is "1" or "true" */
+ else if ( atoi(value) == 1 || !strcasecmp(value, "true") ) {
ctx->mute = 1;
_radio_set_mute (ctx->idx, ctx->mute);
-
- jresp = json_object_new_object();
json_object_object_add (jresp, "mute", json_object_new_string ("on"));
}
- /* "?value=" parameter is "0" or "off" */
+ /* "?value=" parameter is "0" or "false" */
else if ( atoi(value) == 0 || !strcasecmp(value, "off") ) {
ctx->mute = 0;
_radio_set_mute (ctx->idx, ctx->mute);
-
- jresp = json_object_new_object();
json_object_object_add (jresp, "mute", json_object_new_string ("off"));
}
-
- return jresp;
+
+ afb_req_success (request, jresp, "Radio - Mute set");
}
-STATIC json_object* play (AFB_request *request) { /* AFB_SESSION_CHECK */
+static void play (struct afb_req request) { /* AFB_SESSION_CHECK */
- radioCtxHandleT *ctx = (radioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
- json_object *jresp;
+ radioCtxHandleT *ctx = (radioCtxHandleT*) afb_req_context_get(request);
+ const char *value = afb_req_value (request, "value");
+ json_object *jresp = json_object_new_object();
/* no "?value=" parameter : return current state */
- if (!value) {
+ if (!value || !ctx->radio) {
ctx->is_playing ?
json_object_object_add (jresp, "play", json_object_new_string ("on"))
: json_object_object_add (jresp, "play", json_object_new_string ("off"));
}
- /* "?value=" parameter is "1" or "on" */
- else if ( atoi(value) == 1 || !strcasecmp(value, "on") ) {
+ /* "?value=" parameter is "1" or "true" */
+ else if ( atoi(value) == 1 || !strcasecmp(value, "true") ) {
/* radio playback */
ctx->is_playing = 1;
_radio_play (ctx->idx);
-
- jresp = json_object_new_object();
json_object_object_add (jresp, "play", json_object_new_string ("on"));
}
- /* "?value=" parameter is "0" or "off" */
- else if ( atoi(value) == 0 || !strcasecmp(value, "off") ) {
+ /* "?value=" parameter is "0" or "false" */
+ else if ( atoi(value) == 0 || !strcasecmp(value, "false") ) {
/* radio stop */
ctx->is_playing = 0;
_radio_stop (ctx->idx);
-
- jresp = json_object_new_object();
- json_object_object_add (jresp, "play-on", json_object_new_string ("off"));
+ json_object_object_add (jresp, "play", json_object_new_string ("off"));
}
- return jresp;
+ afb_req_success (request, jresp, "Radio - Play succeeded");
}
-STATIC json_object* status (AFB_request *request) {
- return NULL;
+static void ping (struct afb_req request) { /* AFB_SESSION_NONE */
+ afb_req_success (request, NULL, "Radio - Ping succeeded");
}
-STATIC AFB_restapi pluginApis[]= {
- {"power" , AFB_SESSION_CREATE, (AFB_apiCB)power , "Radio API - power"},
- {"mode" , AFB_SESSION_CHECK, (AFB_apiCB)mode , "Radio API - mode"},
- {"freq" , AFB_SESSION_CHECK, (AFB_apiCB)freq , "Radio API - freq"},
- {"mute" , AFB_SESSION_CHECK, (AFB_apiCB)mute , "Radio API - mute"},
- {"play" , AFB_SESSION_CHECK, (AFB_apiCB)play , "Radio API - play"},
- {"status" , AFB_SESSION_RENEW, (AFB_apiCB)status , "Radio API - status"},
+static const struct AFB_restapi pluginApis[]= {
+ {"init" , AFB_SESSION_CHECK, init , "Radio API - init"},
+ {"power" , AFB_SESSION_CHECK, power , "Radio API - power"},
+ {"mode" , AFB_SESSION_CHECK, mode , "Radio API - mode"},
+ {"freq" , AFB_SESSION_CHECK, freq , "Radio API - freq"},
+ {"mute" , AFB_SESSION_CHECK, mute , "Radio API - mute"},
+ {"play" , AFB_SESSION_CHECK, play , "Radio API - play"},
+ {"ping" , AFB_SESSION_NONE, ping , "Radio API - ping"},
{NULL}
};
-PUBLIC AFB_plugin* radioRegister () {
- AFB_plugin *plugin = malloc (sizeof(AFB_plugin));
- plugin->type = AFB_PLUGIN_JSON;
- plugin->info = "Application Framework Binder - Radio plugin";
- plugin->prefix = "radio";
- plugin->apis = pluginApis;
-
- plugin->handle = initRadioPlugin();
- plugin->freeCtxCB = freeRadio;
-
- return (plugin);
+static const struct AFB_plugin pluginDesc = {
+ .type = AFB_PLUGIN_JSON,
+ .info = "Application Framework Binder - Radio plugin",
+ .prefix = "radio",
+ .apis = pluginApis
};
+
+const struct AFB_plugin *pluginRegister (const struct AFB_interface *itf)
+{
+ initRadioPlugin();
+ return &pluginDesc;
+}
Code Review / src / app-framework-binder.git / blobdiff