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Diffstat (limited to 'bindings/audio/audio-api.c')
| -rw-r--r-- | bindings/audio/audio-api.c | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/bindings/audio/audio-api.c b/bindings/audio/audio-api.c deleted file mode 100644 index 7466173e..00000000 --- a/bindings/audio/audio-api.c +++ /dev/null @@ -1,383 +0,0 @@ -/* - * Copyright (C) 2015, 2016, 2017 "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-binding.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_binding pluginDesc = { - .type = AFB_BINDING_VERSION_1, - .v1 = { - .info = "Application Framework Binder - Audio plugin", - .prefix = "audio", - .verbs = verbs - } -}; - -const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *itf) -{ - return &pluginDesc; -} |