+++ /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 <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/afb-plugin.h>
-#include <afb/afb-req-itf.h>
-
-/* ------ BACKEND FUNCTIONS ------- */
-
-unsigned char _backend_init (const char *name, audioCtxHandleT *ctx) {
-
- char *backend_env = getenv ("AFB_AUDIO_OUTPUT");
- unsigned char res = 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);
-
- if (!res)
- fprintf (stderr, "Could not initialize Audio backend\n");
-
- return res;
-}
-
-void _backend_free (audioCtxHandleT *ctx) {
-
-# ifdef HAVE_PULSE
- if (ctx->audio_dev) _pulse_free (ctx); else
-# endif
- _alsa_free (ctx->name);
-}
-
-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) {
-
-# ifdef HAVE_PULSE
- if (ctx->audio_dev) _pulse_set_mute (ctx, mute); else
-# endif
- _alsa_set_mute (ctx->idx, mute);
-}
-
-void _backend_set_channels (audioCtxHandleT *ctx, unsigned int channels) {
-
-# 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 void init (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- audioCtxHandleT *ctx = afb_req_context_get (request);
- json_object *jresp;
-
- /* create a private client context */
- 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, "init", json_object_new_string ("success"));
- afb_req_success (request, jresp, "Audio initialized");
-}
-
-static void volume (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- audioCtxHandleT *ctx = afb_req_context_get (request);
- const char *value = afb_req_value (request, "value");
- json_object *jresp;
- unsigned int volume[8], i;
- char *volume_i;
- char volume_str[256];
- size_t len_str = 0;
-
- 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) {
- 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);
- }
- json_object_object_add (jresp, "volume", json_object_new_string(volume_str));
- afb_req_success (request, jresp, "Audio - Volume obtained");
- return;
- }
-
- /* "?value=" parameter, set volume */
- else {
- 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]);
- }
- free (volume_i);
- json_object_object_add (jresp, "volume", json_object_new_string(volume_str));
- }
-
- afb_req_success (request, jresp, "Audio - Volume changed");
-}
-
-static void channels (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- audioCtxHandleT *ctx = afb_req_context_get (request);
- const char *value = afb_req_value (request, "value");
- json_object *jresp;
- char channels_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) {
- snprintf (channels_str, sizeof(channels_str), "%d", ctx->channels);
-
- json_object_object_add (jresp, "channels", json_object_new_string (channels_str));
- afb_req_success (request, jresp, "Audio - Channels obtained");
- return;
- }
-
- /* "?value=" parameter, set channels */
- else {
- ctx->channels = (unsigned int) atoi (value);
- _backend_set_channels (ctx, ctx->channels);
- snprintf (channels_str, sizeof(channels_str), "%d", ctx->channels);
-
- jresp = json_object_new_object();
- json_object_object_add (jresp, "channels", json_object_new_string (channels_str));
- }
-
- afb_req_success (request, jresp, "Audio - Channels set");
-}
-
-static void mute (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- audioCtxHandleT *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->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"));
- afb_req_success (request, jresp, "Audio - Mute status obtained");
- return;
- }
-
- /* "?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 "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"));
- }
-
- afb_req_success (request, jresp, "Audio - Mute set");
-}
-
-static void play (struct afb_req request) { /* AFB_SESSION_CHECK */
-
- audioCtxHandleT *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->is_playing ?
- json_object_object_add (jresp, "play", json_object_new_string ("on"))
- : json_object_object_add (jresp, "play", json_object_new_string ("off"));
- afb_req_success (request, jresp, "Audio - Playing status obtained");
- return;
- }
-
- /* "?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 const struct AFB_verb_desc_v1 verbs[] = {
- {"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}
-};
-
-static const struct AFB_plugin pluginDesc = {
- .type = AFB_PLUGIN_VERSION_1,
- .v1 = {
- .info = "Application Framework Binder - Audio plugin",
- .prefix = "audio",
- .verbs = verbs
- }
-};
-
-const struct AFB_plugin *pluginAfbV1Register (const struct AFB_interface *itf)
-{
- return &pluginDesc;
-}
Code Review / src / app-framework-binder.git / blobdiff