* 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 <stdlib.h>
+#include <json-c/json.h>
+
#include "audio-api.h"
#include "audio-alsa.h"
+#ifdef HAVE_PULSE
+#include "audio-pulse.h"
+#endif
+#include "afb-plugin.h"
+#include "afb-req-itf.h"
-/* ------ LOCAL HELPER FUNCTIONS --------- */
+/* ------ BACKEND FUNCTIONS ------- */
-/* private client context creation ; default values */
-STATIC audioCtxHandleT* initAudioCtx () {
+unsigned char _backend_init (const char *name, audioCtxHandleT *ctx) {
- audioCtxHandleT *actx;
+ char *backend_env = getenv ("AFB_AUDIO_OUTPUT");
+ unsigned char res = 0;
- actx = malloc (sizeof(audioCtxHandleT));
- actx->idx = -1;
- actx->volume = 25;
- actx->channels = 2;
- actx->mute = 0;
+# ifdef HAVE_PULSE
+ if (!backend_env || (strcasecmp (backend_env, "Pulse") == 0))
+ res = _pulse_init (name, ctx);
+ if (!res)
+#endif
+ res = _alsa_init (name, ctx);
- return actx;
+ if (!res)
+ fprintf (stderr, "Could not initialize Audio backend\n");
+
+ return res;
}
-STATIC AFB_error releaseAudio (audioCtxHandleT *actx) {
+void _backend_free (audioCtxHandleT *ctx) {
- /* power it off */
- _alsa_free (actx->idx);
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) _pulse_free (ctx); else
+# endif
+ _alsa_free (ctx->name);
+}
- /* clean client context */
- actx->idx = -1;
+void _backend_play (audioCtxHandleT *ctx) {
+
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) _pulse_play (ctx); else
+# endif
+ _alsa_play (ctx->idx);
+}
+
+void _backend_stop (audioCtxHandleT *ctx) {
+
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) _pulse_stop (ctx); else
+# endif
+ _alsa_stop (ctx->idx);
+}
+
+unsigned int _backend_get_volume (audioCtxHandleT *ctx, unsigned int channel) {
+
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) return _pulse_get_volume (ctx, channel); else
+# endif
+ return _alsa_get_volume (ctx->idx, channel);
+}
+
+void _backend_set_volume (audioCtxHandleT *ctx, unsigned int channel, unsigned int vol) {
+
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) _pulse_set_volume (ctx, channel, vol); else
+# endif
+ _alsa_set_volume (ctx->idx, channel, vol);
+}
+
+void _backend_set_volume_all (audioCtxHandleT *ctx, unsigned int vol) {
+
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) _pulse_set_volume_all (ctx, vol); else
+# endif
+ _alsa_set_volume_all (ctx->idx, vol);
+}
+
+unsigned char _backend_get_mute (audioCtxHandleT *ctx) {
+
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) return _pulse_get_mute (ctx); else
+# endif
+ return _alsa_get_mute (ctx->idx);
+}
+
+void _backend_set_mute (audioCtxHandleT *ctx, unsigned char mute) {
- return AFB_SUCCESS;
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) _pulse_set_mute (ctx, mute); else
+# endif
+ _alsa_set_mute (ctx->idx, mute);
}
-/* called when client session dies [e.g. client quits for more than 15mns] */
-STATIC json_object* freeAudio (AFB_clientCtx *client) {
+void _backend_set_channels (audioCtxHandleT *ctx, unsigned int channels) {
- releaseAudio (client->ctx);
- free (client->ctx);
-
- return jsonNewMessage (AFB_SUCCESS, "Released radio and client context");
+# ifdef HAVE_PULSE
+ if (ctx->audio_dev) return; else
+# endif
+ _alsa_set_channels (ctx->idx, channels);
+}
+
+/* ------ LOCAL HELPER FUNCTIONS --------- */
+
+/* private client context constructor ; default values */
+static audioCtxHandleT* initAudioCtx () {
+
+ audioCtxHandleT *ctx;
+ int i;
+
+ ctx = malloc (sizeof(audioCtxHandleT));
+ ctx->audio_dev = NULL;
+ ctx->name = NULL;
+ ctx->idx = -1;
+ for (i = 0; i < 8; i++)
+ ctx->volume[i] = 25;
+ ctx->channels = 2;
+ ctx->mute = 0;
+ ctx->is_playing = 0;
+
+ return ctx;
+}
+
+static void releaseAudioCtx (void *context) {
+
+ audioCtxHandleT *ctx = (audioCtxHandleT*) context;
+
+ /* power it off */
+ _backend_free (ctx);
+
+ /* clean client context */
+ ctx->audio_dev = NULL;
+ if (ctx->name)
+ free (ctx->name);
+ ctx->idx = -1;
+ free (ctx);
}
/* ------ PUBLIC PLUGIN FUNCTIONS --------- */
-STATIC json_object* init (AFB_request *request) { /* AFB_SESSION_CREATE */
+static void init (struct afb_req request) { /* AFB_SESSION_CHECK */
- audioCtxHandleT *actx;
+ audioCtxHandleT *ctx = (audioCtxHandleT*) afb_req_context_get(request);
json_object *jresp;
- int idx;
/* create a private client context */
- actx = initAudioCtx();
- request->client->ctx = (audioCtxHandleT*)actx;
-
- _alsa_init("default", actx);
-
+ if (!ctx) {
+ ctx = initAudioCtx();
+ afb_req_context_set (request, ctx, releaseAudioCtx);
+ }
+
+ if (!_backend_init ("default", ctx)) {
+ afb_req_fail (request, "failed", "backend initialization failed");
+ }
+
jresp = json_object_new_object();
- json_object_object_add (jresp, "token", json_object_new_string (request->client->token));
- return jresp;
+ json_object_object_add (jresp, "init", json_object_new_string ("success"));
+ afb_req_success (request, jresp, "Audio initialized");
}
-STATIC json_object* volume (AFB_request *request) { /* AFB_SESSION_CHECK */
+static void volume (struct afb_req request) { /* AFB_SESSION_CHECK */
- audioCtxHandleT *actx = (audioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
+ audioCtxHandleT *ctx = (audioCtxHandleT*) afb_req_context_get(request);
+ struct afb_arg arg = afb_req_get (request, "value");
+ const char *value = arg.value;
json_object *jresp;
- int volume;
+ unsigned int volume[8], i;
+ char *volume_i;
char volume_str[256];
+ size_t len_str = 0;
/* no "?value=" parameter : return current state */
if (!value) {
- actx->volume = _alsa_get_volume (actx->idx);
- snprintf (volume_str, sizeof(volume_str), "%d", actx->volume);
+ 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 = atoi (value);
- if (100 < volume < 0) {
- request->errcode = MHD_HTTP_SERVICE_UNAVAILABLE;
- return (jsonNewMessage (AFB_FAIL, "Volume must be between 0 and 100"));
+ volume_i = strdup (value);
+ volume_i = strtok (volume_i, ",");
+ volume[0] = (unsigned int) atoi (volume_i);
+
+ if (100 < volume[0]) {
+ free (volume_i);
+ afb_req_fail (request, "failed", "volume must be between 0 and 100");
+ return;
+ }
+ 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) || atoi(volume_i) < 0) {
+ ctx->volume[i] = _backend_get_volume (ctx, i);
+ } else {
+ ctx->volume[i] = (unsigned int) 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]);
}
- actx->volume = volume;
- _alsa_set_volume (actx->idx, actx->volume);
-
- snprintf (volume_str, sizeof(volume_str), "%d", actx->volume);
jresp = json_object_new_object();
json_object_object_add (jresp, "volume", json_object_new_string(volume_str));
}
- return jresp;
+ afb_req_success (request, jresp, "Audio - Volume changed");
}
-STATIC json_object* channels (AFB_request *request) { /* AFB_SESSION_CHECK */
+static void channels (struct afb_req request) { /* AFB_SESSION_CHECK */
- audioCtxHandleT *actx = (audioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
+ audioCtxHandleT *ctx = (audioCtxHandleT*) afb_req_context_get(request);
+ struct afb_arg arg = afb_req_get (request, "value");
+ const char *value = arg.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", actx->channels);
+ 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 {
- actx->channels = atoi (value);
- _alsa_set_channels (actx->idx, actx->channels);
+ ctx->channels = (unsigned int) atoi (value);
+ _backend_set_channels (ctx, ctx->channels);
- snprintf (channels_str, sizeof(channels_str), "%d", actx->channels);
+ snprintf (channels_str, sizeof(channels_str), "%d", ctx->channels);
json_object_object_add (jresp, "channels", json_object_new_string (channels_str));
}
- return jresp;
+ afb_req_success (request, jresp, "Audio - Channels set");
}
-STATIC json_object* mute (AFB_request *request) { /* AFB_SESSION_CHECK */
+static void mute (struct afb_req request) { /* AFB_SESSION_CHECK */
- audioCtxHandleT *actx = (audioCtxHandleT*)request->client->ctx;
- const char *value = getQueryValue (request, "value");
+ audioCtxHandleT *ctx = (audioCtxHandleT*) afb_req_context_get(request);
+ struct afb_arg arg = afb_req_get (request, "value");
+ const char *value = arg.value;
json_object *jresp = json_object_new_object();
/* no "?value=" parameter : return current state */
if (!value) {
- actx->mute = _alsa_get_mute (actx->idx);
- actx->mute ?
+ 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"));
}
- /* "?value=" parameter is "1" or "on" */
- else if ( atoi(value) == 1 || !strcasecmp(value, "on") ) {
- actx->mute = 1;
- _alsa_set_mute (actx->idx, actx->mute);
+ /* "?value=" parameter is "1" or "true" */
+ else if ( atoi(value) == 1 || !strcasecmp(value, "true") ) {
+ ctx->mute = 1;
+ _backend_set_mute (ctx, ctx->mute);
json_object_object_add (jresp, "mute", json_object_new_string ("on"));
}
- /* "?value=" parameter is "0" or "off" */
- else if ( atoi(value) == 0 || !strcasecmp(value, "off") ) {
- actx->mute = 0;
- _alsa_set_mute (actx->idx, actx->mute);
+ /* "?value=" parameter is "0" or "false" */
+ else if ( atoi(value) == 0 || !strcasecmp(value, "false") ) {
+ ctx->mute = 0;
+ _backend_set_mute (ctx, ctx->mute);
json_object_object_add (jresp, "mute", json_object_new_string ("off"));
}
- return jresp;
+ afb_req_success (request, jresp, "Audio - Mute set");
}
-STATIC json_object* status (AFB_request *request) { /* AFB_SESSION_RENEW */
- return NULL;
+static void play (struct afb_req request) { /* AFB_SESSION_CHECK */
+
+ audioCtxHandleT *ctx = (audioCtxHandleT*) afb_req_context_get(request);
+ struct afb_arg arg = afb_req_get (request, "value");
+ const char *value = arg.value;
+ json_object *jresp = json_object_new_object();
+
+ /* no "?value=" parameter : return current state */
+ if (!value) {
+ 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") ) {
+ ctx->is_playing = 1;
+ _backend_play (ctx);
+
+ 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") ) {
+ ctx->is_playing = 0;
+ _backend_stop (ctx);
+
+ json_object_object_add (jresp, "play", json_object_new_string ("off"));
+ }
+
+ afb_req_success (request, jresp, "Audio - Play");
}
+static void ping (struct afb_req request) { /* AFB_SESSION_NONE */
+ afb_req_success (request, NULL, "Audio - Ping success");
+}
-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"},
+static const struct AFB_restapi pluginApis[]= {
+ {"init" , AFB_SESSION_CHECK, init , "Audio API - init"},
+ {"volume" , AFB_SESSION_CHECK, volume , "Audio API - volume"},
+ {"channels", AFB_SESSION_CHECK, channels , "Audio API - channels"},
+ {"mute" , AFB_SESSION_CHECK, mute , "Audio API - mute"},
+ {"play" , AFB_SESSION_CHECK, play , "Audio API - play"},
+ {"ping" , AFB_SESSION_NONE, ping , "Audio API - ping"},
{NULL}
};
-PUBLIC AFB_plugin *audioRegister () {
- AFB_plugin *plugin = malloc (sizeof(AFB_plugin));
- plugin->type = AFB_PLUGIN_JSON;
- plugin->info = "Application Framework Binder - Audio plugin";
- plugin->prefix = "audio";
- plugin->apis = pluginApis;
-
- plugin->freeCtxCB = freeAudio;
-
- return (plugin);
+static const struct AFB_plugin pluginDesc = {
+ .type = AFB_PLUGIN_JSON,
+ .info = "Application Framework Binder - Audio plugin",
+ .prefix = "audio",
+ .apis = pluginApis
};
+
+const struct AFB_plugin *pluginRegister (const struct AFB_interface *itf)
+{
+ return &pluginDesc;
+}
Code Review / src / app-framework-binder.git / blobdiff