+++ /dev/null
-/*
- * Copyright (C) 2015, 2016 "IoT.bzh"
- * Author "Manuel Bachmann"
- *
- * 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 <strings.h>
-#include <json-c/json.h>
-
-#include "radio-api.h"
-#include "radio-rtlsdr.h"
-
-#include <afb/afb-plugin.h>
-#include <afb/afb-req-itf.h>
-
-/* ********************************************************
-
- FULUP integration proposal with client session context
-
- ******************************************************** */
-
-/* ------ LOCAL HELPER FUNCTIONS --------- */
-
-static pluginHandleT *the_radio = NULL;
-
-/* detect new radio devices */
-void updateRadioDevList(pluginHandleT *handle) {
-
- int idx;
-
- // loop on existing radio if any
- for (idx = 0; idx < _radio_dev_count(); idx++) {
- if (idx == MAX_RADIO) break;
- handle->radios[idx] = calloc(1, sizeof(radioDevT)); /* use calloc to set "used" to FALSE */
- handle->radios[idx]->name = (char *) _radio_dev_name(idx);
- }
- handle->devCount = _radio_dev_count();
-}
-
-/* global plugin context creation ; at loading time [radio devices might not be visible] */
-static void initRadioPlugin() {
-
- pluginHandleT *handle;
-
- handle = calloc (1, sizeof(pluginHandleT));
- updateRadioDevList (handle);
- the_radio = handle;
-}
-
-/* private client context creation ; default values */
-static radioCtxHandleT* initRadioCtx () {
-
- radioCtxHandleT *ctx;
-
- ctx = malloc (sizeof(radioCtxHandleT));
- ctx->radio = NULL;
- ctx->idx = -1;
- ctx->mode = FM;
- ctx->freq = 100.0;
- ctx->mute = 0;
- ctx->is_playing = 0;
-
- return ctx;
-}
-
-/* reserve a radio device for requesting client, power it on */
-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 0;
-
- found_radio:
- /* try to power it on, passing client context info such as frequency... */
-
- _radio_on (idx, ctx);
- /* TODO : try to re-iterate from the next ones if it failed ! */
-
- /* globally mark it as reserved */
- handle->radios[idx]->used = TRUE;
-
- /* store relevant info to client context (direct pointer, index) */
- ctx->radio = handle->radios[idx];
- ctx->idx = idx;
-
- return 1;
-}
-
-/* free a radio device from requesting client, power it off */
-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);
-
- /* globally mark it as free */
- handle->radios[ctx->idx]->used = FALSE;
-
- /* clean client context */
- ctx->radio = NULL;
- ctx->idx = -1;
-
- return 1;
-}
-
-/* called when client session dies [e.g. client quits for more than 15mns] */
-static void freeRadio (void *context) {
-
- releaseRadio (the_radio, context);
- free (context);
-}
-
-
-/* ------ PUBLIC PLUGIN FUNCTIONS --------- */
-
-static void init (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- radioCtxHandleT *ctx = afb_req_context_get (request);
- json_object *jresp;
-
- /* create a global plugin handle */
- if (!the_radio)
- initRadioPlugin();
-
- /* 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 = afb_req_context_get (request);
- const char *value = afb_req_value (request, "value");
- json_object *jresp;
-
- if (!ctx) {
- afb_req_fail (request, "failed", "you must call 'init' first");
- return;
- }
- jresp = json_object_new_object();
-
- /* no "?value=" parameter : return current state */
- if (!value) {
- ctx->radio ?
- json_object_object_add (jresp, "power", json_object_new_string ("on"))
- : json_object_object_add (jresp, "power", json_object_new_string ("off"));
- afb_req_success (request, jresp, "Radio - Power status obtained");
- return;
- }
-
- /* "?value=" parameter is "1" or "true" */
- else if ( atoi(value) == 1 || !strcasecmp(value, "true") ) {
- if (!ctx->radio) {
- if (!reserveRadio (handle, ctx)) {
- afb_req_fail (request, "failed", "no more radio devices available");
- return;
- }
- }
- json_object_object_add (jresp, "power", json_object_new_string ("on"));
- }
-
- /* "?value=" parameter is "0" or "false" */
- else if ( atoi(value) == 0 || !strcasecmp(value, "false") ) {
- if (ctx->radio) {
- if (!releaseRadio (handle, ctx)) {
- afb_req_fail (request, "failed", "Unable to release radio device");
- return;
- }
- }
- json_object_object_add (jresp, "power", json_object_new_string ("off"));
- }
- else
- jresp = NULL;
-
- afb_req_success (request, jresp, "Radio - Power set");
-}
-
-static void mode (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- radioCtxHandleT *ctx = afb_req_context_get (request);
- const char *value = afb_req_value (request, "value");
- json_object *jresp;
-
- if (!ctx) {
- afb_req_fail (request, "failed", "you must call 'init' first");
- return;
- }
- jresp = json_object_new_object();
-
- /* no "?value=" parameter : return current state */
- 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 "AM" */
- else if ( atoi(value) == 1 || !strcasecmp(value, "AM") ) {
- ctx->mode = AM;
- _radio_set_mode (ctx->idx, ctx->mode);
- json_object_object_add (jresp, "mode", json_object_new_string ("AM"));
- }
-
- /* "?value=" parameter is "0" or "FM" */
- else if ( atoi(value) == 0 || !strcasecmp(value, "FM") ) {
- ctx->mode = FM;
- _radio_set_mode (ctx->idx, ctx->mode);
- json_object_object_add (jresp, "mode", json_object_new_string ("FM"));
- }
-
- afb_req_success (request, jresp, "Radio - Mode set");
-}
-
-static void freq (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- radioCtxHandleT *ctx = afb_req_context_get (request);
- const char *value = afb_req_value (request, "value");
- json_object *jresp;
- double freq;
- char freq_str[256];
-
- if (!ctx) {
- afb_req_fail (request, "failed", "you must call 'init' first");
- return;
- }
- jresp = json_object_new_object();
-
- /* no "?value=" parameter : return current state */
- 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 {
- 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));
- }
-
- afb_req_success (request, jresp, "Radio - Frequency Set");
-}
-
-static void mute (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- radioCtxHandleT *ctx = afb_req_context_get (request);
- const char *value = afb_req_value (request, "value");
- json_object *jresp = json_object_new_object();
-
- if (!ctx) {
- afb_req_fail (request, "failed", "you must call 'init' first");
- return;
- }
-
- /* no "?value=" parameter : return current state */
- 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 "true" */
- else if ( atoi(value) == 1 || !strcasecmp(value, "true") ) {
- ctx->mute = 1;
- _radio_set_mute (ctx->idx, ctx->mute);
- json_object_object_add (jresp, "mute", json_object_new_string ("on"));
- }
-
- /* "?value=" parameter is "0" or "false" */
- else if ( atoi(value) == 0 || !strcasecmp(value, "off") ) {
- ctx->mute = 0;
- _radio_set_mute (ctx->idx, ctx->mute);
- json_object_object_add (jresp, "mute", json_object_new_string ("off"));
- }
-
- afb_req_success (request, jresp, "Radio - Mute set");
-}
-
-static void play (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- radioCtxHandleT *ctx = afb_req_context_get (request);
- const char *value = afb_req_value (request, "value");
- json_object *jresp = json_object_new_object();
-
- if (!ctx) {
- afb_req_fail (request, "failed", "you must call 'init' first");
- return;
- }
-
- /* no "?value=" parameter : return current state */
- 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 "true" */
- else if ( atoi(value) == 1 || !strcasecmp(value, "true") ) {
- /* radio playback */
- ctx->is_playing = 1;
- _radio_play (ctx->idx);
- json_object_object_add (jresp, "play", json_object_new_string ("on"));
- }
-
- /* "?value=" parameter is "0" or "false" */
- else if ( atoi(value) == 0 || !strcasecmp(value, "false") ) {
- /* radio stop */
- ctx->is_playing = 0;
- _radio_stop (ctx->idx);
- json_object_object_add (jresp, "play", json_object_new_string ("off"));
- }
-
- afb_req_success (request, jresp, "Radio - Play succeeded");
-}
-
-static void ping (struct afb_req request) { /* AFB_SESSION_NONE */
- afb_req_success (request, NULL, "Radio - Ping succeeded");
-}
-
-
-static const struct AFB_verb_desc_v1 verbs[] = {
- {"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}
-};
-
-static const struct AFB_plugin pluginDesc = {
- .type = AFB_PLUGIN_VERSION_1,
- .v1 = {
- .info = "Application Framework Binder - Radio plugin",
- .prefix = "radio",
- .verbs = verbs
- }
-};
-
-const struct AFB_plugin *pluginAfbV1Register (const struct AFB_interface *itf)
-{
- return &pluginDesc;
-}
Code Review / src / app-framework-binder.git / blobdiff