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authorJosé Bollo <jose.bollo@iot.bzh>2016-06-23 20:34:57 +0200
committerJosé Bollo <jose.bollo@iot.bzh>2016-06-23 20:42:57 +0200
commit7059e59cddc1c81321639875636e88895bc14309 (patch)
tree2e857745ae2dd18814bdfe2d6e3806151a51a43e /bindings/audio
parentef908d903929988ad01f9df94415fc9c3ddebcac (diff)
vocabulary: moving from 'plugin' to 'binding'
Change-Id: Ic9e118df2bede1fefbb591f8ae7887266b7324ca Signed-off-by: José Bollo <jose.bollo@iot.bzh>
Diffstat (limited to 'bindings/audio')
-rw-r--r--bindings/audio/CMakeLists.txt27
-rw-r--r--bindings/audio/audio-alsa.c311
-rw-r--r--bindings/audio/audio-alsa.h56
-rw-r--r--bindings/audio/audio-api.c383
-rw-r--r--bindings/audio/audio-api.h38
-rw-r--r--bindings/audio/audio-pulse.c491
-rw-r--r--bindings/audio/audio-pulse.h66
-rw-r--r--bindings/audio/export.map1
8 files changed, 1373 insertions, 0 deletions
diff --git a/bindings/audio/CMakeLists.txt b/bindings/audio/CMakeLists.txt
new file mode 100644
index 00000000..11da28e1
--- /dev/null
+++ b/bindings/audio/CMakeLists.txt
@@ -0,0 +1,27 @@
+INCLUDE(FindPkgConfig)
+PKG_CHECK_MODULES(alsa alsa)
+PKG_CHECK_MODULES(pulseaudio libpulse libpulse-simple)
+INCLUDE(FindThreads)
+FIND_PACKAGE(Threads)
+
+IF(alsa_FOUND)
+
+ MESSAGE(STATUS "ALSA found ; will compile Audio binding... (BINDING)")
+
+ IF(pulseaudio_FOUND)
+ MESSAGE(STATUS "PulseAudio found ; Audio binding will have PulseAudio support")
+ ADD_DEFINITIONS(-DHAVE_PULSE=1)
+ SET(pulse_sources audio-pulse.c)
+ ENDIF(pulseaudio_FOUND)
+
+ INCLUDE_DIRECTORIES(${include_dirs} ${alsa_INCLUDE_DIRS} ${pulseaudio_INCLUDE_DIRS})
+ ADD_LIBRARY(audio-api MODULE audio-api.c audio-alsa.c ${pulse_sources})
+ SET_TARGET_PROPERTIES(audio-api PROPERTIES
+ PREFIX ""
+ LINK_FLAGS "-Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/export.map"
+ )
+ TARGET_LINK_LIBRARIES(audio-api ${link_libraries} ${alsa_LIBRARIES} ${pulseaudio_LIBRARIES})
+ INSTALL(TARGETS audio-api
+ LIBRARY DESTINATION ${binding_install_dir})
+
+ENDIF(alsa_FOUND)
diff --git a/bindings/audio/audio-alsa.c b/bindings/audio/audio-alsa.c
new file mode 100644
index 00000000..45ff2edb
--- /dev/null
+++ b/bindings/audio/audio-alsa.c
@@ -0,0 +1,311 @@
+/*
+ * 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.
+ */
+
+#include "audio-api.h"
+#include "audio-alsa.h"
+
+snd_mixer_selem_channel_id_t SCHANNELS[8] = {
+ SND_MIXER_SCHN_FRONT_LEFT,
+ SND_MIXER_SCHN_FRONT_RIGHT,
+ SND_MIXER_SCHN_FRONT_CENTER,
+ SND_MIXER_SCHN_REAR_LEFT,
+ SND_MIXER_SCHN_REAR_RIGHT,
+ SND_MIXER_SCHN_REAR_CENTER,
+ SND_MIXER_SCHN_SIDE_LEFT,
+ SND_MIXER_SCHN_SIDE_RIGHT
+};
+
+static struct dev_ctx_alsa **dev_ctx_a = NULL;
+
+
+unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
+
+ snd_pcm_t *dev;
+ snd_pcm_hw_params_t *params;
+ snd_mixer_t *mixer;
+ snd_mixer_selem_id_t *mixer_sid;
+ snd_mixer_elem_t *mixer_elm;
+ snd_mixer_elem_t *mixer_elm_m;
+ unsigned int rate = 22050;
+ long vol, vol_min, vol_max;
+ int num, i;
+
+ if (snd_pcm_open (&dev, name, SND_PCM_STREAM_PLAYBACK, 0) < 0) {
+ fprintf (stderr, "ALSA backend could not open card '%s'\n", name);
+ return 0;
+ }
+
+ snd_pcm_hw_params_malloc (&params);
+ snd_pcm_hw_params_any (dev, params);
+ snd_pcm_hw_params_set_access (dev, params, SND_PCM_ACCESS_RW_INTERLEAVED);
+ snd_pcm_hw_params_set_format (dev, params, SND_PCM_FORMAT_S16_LE);
+ snd_pcm_hw_params_set_rate_near (dev, params, &rate, 0);
+ snd_pcm_hw_params_set_channels (dev, params, ctx->channels);
+ if (snd_pcm_hw_params (dev, params) < 0) {
+ snd_pcm_hw_params_free (params);
+ fprintf (stderr, "ALSA backend could set channels on card '%s'\n", name);
+ return 0;
+ }
+ snd_pcm_prepare (dev);
+
+ snd_mixer_open (&mixer, 0);
+ if (snd_mixer_attach (mixer, name) < 0) {
+ snd_pcm_hw_params_free (params);
+ fprintf (stderr, "ALSA backend could not open mixer for card '%s'\n", name);
+ return 0;
+ }
+ snd_mixer_selem_register (mixer, NULL, NULL);
+ snd_mixer_load (mixer);
+
+ snd_mixer_selem_id_alloca (&mixer_sid);
+ snd_mixer_selem_id_set_index (mixer_sid, 0);
+ snd_mixer_selem_id_set_name (mixer_sid, "Master");
+
+ mixer_elm = snd_mixer_find_selem (mixer, mixer_sid);
+ mixer_elm_m = NULL;
+
+ if (!mixer_elm) {
+ /* no "Master" mixer ; we are probably on a board... search ! */
+ for (mixer_elm = snd_mixer_first_elem (mixer); mixer_elm != NULL;
+ mixer_elm = snd_mixer_elem_next (mixer_elm)) {
+ if (snd_mixer_elem_info (mixer_elm) < 0)
+ continue;
+ snd_mixer_selem_get_id (mixer_elm, mixer_sid);
+ if (strstr (snd_mixer_selem_id_get_name (mixer_sid), "DVC Out")) {
+
+ /* this is Porter... let us found the specific mute switch */
+ snd_mixer_selem_id_set_index (mixer_sid, 0);
+ snd_mixer_selem_id_set_name (mixer_sid, "DVC Out Mute");
+ mixer_elm_m = snd_mixer_find_selem (mixer, mixer_sid);
+
+ break;
+ }
+ }
+ }
+
+ if (mixer_elm) {
+ snd_mixer_selem_get_playback_volume_range (mixer_elm, &vol_min, &vol_max);
+ snd_mixer_selem_get_playback_volume (mixer_elm, SND_MIXER_SCHN_FRONT_LEFT, &vol);
+ }
+
+ /* allocate the global array if it hasn't been done */
+ if (!dev_ctx_a) {
+ dev_ctx_a = (dev_ctx_alsa_T**) malloc (sizeof(dev_ctx_alsa_T*));
+ dev_ctx_a[0] = (dev_ctx_alsa_T*) malloc (sizeof(dev_ctx_alsa_T));
+ dev_ctx_a[0]->name = NULL;
+ dev_ctx_a[0]->dev = NULL;
+ }
+
+ /* is a card with similar name already opened ? */
+ for (num = 0; num < (sizeof(dev_ctx_a)/sizeof(dev_ctx_alsa_T*)); num++) {
+ if (dev_ctx_a[num]->name &&
+ !strcmp (dev_ctx_a[num]->name, name)) {
+ fprintf (stderr, "Card '%s' already locked by other ALSA backend session\n", name);
+ return 0;
+ }
+ }
+ num--;
+
+ /* it's not... let us add it to the global array */
+ dev_ctx_a = (dev_ctx_alsa_T**) realloc (dev_ctx_a, (num+1)*sizeof(dev_ctx_alsa_T*));
+ if (!dev_ctx_a[num])
+ dev_ctx_a[num] = (dev_ctx_alsa_T*) malloc (sizeof(dev_ctx_alsa_T));
+ dev_ctx_a[num]->name = strdup (name);
+ dev_ctx_a[num]->dev = dev;
+ dev_ctx_a[num]->params = params;
+ dev_ctx_a[num]->mixer_elm = mixer_elm;
+ dev_ctx_a[num]->mixer_elm_m = mixer_elm_m;
+ dev_ctx_a[num]->vol_max = vol_max;
+ dev_ctx_a[num]->vol = vol;
+ dev_ctx_a[num]->thr_should_run = 0;
+ dev_ctx_a[num]->thr_finished = 0;
+
+ /* make the client context aware of current card state */
+ for (i = 0; i < 8; i++)
+ ctx->volume[i] = _alsa_get_volume (num, i);
+ ctx->mute = _alsa_get_mute (num);
+ ctx->idx = num;
+ ctx->name = strdup (name);
+
+ fprintf (stderr, "Successfully initialized ALSA backend.\n");
+
+ return 1;
+}
+
+void _alsa_free (const char *name) {
+
+ int num;
+
+ for (num = 0; num < (sizeof(dev_ctx_a)/sizeof(dev_ctx_alsa_T*)); num++) {
+ if (dev_ctx_a[num]->name &&
+ !strcmp (dev_ctx_a[num]->name, name)) {
+ snd_pcm_close (dev_ctx_a[num]->dev);
+ snd_pcm_hw_params_free (dev_ctx_a[num]->params);
+ free (dev_ctx_a[num]->name);
+ dev_ctx_a[num]->dev = NULL;
+ dev_ctx_a[num]->name = NULL;
+ free (dev_ctx_a[num]);
+ return;
+ }
+ }
+}
+
+void _alsa_play (int num) {
+
+ if (!dev_ctx_a || !dev_ctx_a[num] || dev_ctx_a[num]->thr_should_run ||
+ access (AUDIO_BUFFER, F_OK) == -1)
+ return;
+
+ dev_ctx_a[num]->thr_should_run = 1;
+ dev_ctx_a[num]->thr_finished = 0;
+ pthread_create (&dev_ctx_a[num]->thr, NULL, _alsa_play_thread_fn, (void*)dev_ctx_a[num]);
+}
+
+void _alsa_stop (int num) {
+
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->thr_should_run)
+ return;
+
+ /* stop the "while" loop in thread */
+ dev_ctx_a[num]->thr_should_run = 0;
+
+ while (!dev_ctx_a[num]->thr_finished)
+ usleep(100000);
+
+ pthread_join (dev_ctx_a[num]->thr, NULL);
+}
+
+unsigned int _alsa_get_volume (int num, unsigned int channel) {
+
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm)
+ return 0;
+
+ snd_mixer_selem_get_playback_volume (dev_ctx_a[num]->mixer_elm, SCHANNELS[channel], &dev_ctx_a[num]->vol);
+
+ return (unsigned int)(dev_ctx_a[num]->vol*100)/dev_ctx_a[num]->vol_max;
+}
+
+void _alsa_set_volume (int num, unsigned int channel, unsigned int vol) {
+
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm ||
+ vol > 100)
+ return;
+
+ snd_mixer_selem_set_playback_volume (dev_ctx_a[num]->mixer_elm, SCHANNELS[channel], (vol*dev_ctx_a[num]->vol_max)/100);
+}
+
+void _alsa_set_volume_all (int num, unsigned int vol) {
+
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm ||
+ vol > 100)
+
+ fflush (stdout); /* seems to force this logic to apply quickly */
+ snd_mixer_selem_set_playback_volume_all (dev_ctx_a[num]->mixer_elm, (vol*dev_ctx_a[num]->vol_max)/100);
+}
+
+unsigned char _alsa_get_mute (int num) {
+
+ int mute = 0;
+ snd_mixer_elem_t *elm_m;
+
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm)
+ return 0;
+
+ dev_ctx_a[num]->mixer_elm_m ? (elm_m = dev_ctx_a[num]->mixer_elm_m) :
+ (elm_m = dev_ctx_a[num]->mixer_elm);
+
+ if (snd_mixer_selem_has_playback_switch (elm_m)) {
+ snd_mixer_selem_get_playback_switch (elm_m, SND_MIXER_SCHN_FRONT_LEFT, &mute);
+ snd_mixer_selem_get_playback_switch (elm_m, SND_MIXER_SCHN_FRONT_RIGHT, &mute);
+ }
+
+ if (dev_ctx_a[num]->mixer_elm_m)
+ return (unsigned char)mute;
+ else
+ return (unsigned char)!mute;
+}
+
+void _alsa_set_mute (int num, unsigned char tomute) {
+
+ snd_mixer_elem_t *elm_m;
+ int mute;
+
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm || 1 < tomute)
+ return;
+
+ if (dev_ctx_a[num]->mixer_elm_m) {
+ elm_m = dev_ctx_a[num]->mixer_elm_m;
+ mute = (int)!tomute;
+ } else {
+ elm_m = dev_ctx_a[num]->mixer_elm;
+ mute = (int)tomute;
+ }
+
+ if (snd_mixer_selem_has_playback_switch (elm_m))
+ snd_mixer_selem_set_playback_switch_all (elm_m, !mute);
+}
+
+void _alsa_set_rate (int num, unsigned int rate) {
+
+ if (!dev_ctx_a || !dev_ctx_a[num])
+ return;
+
+ snd_pcm_hw_params_set_rate_near (dev_ctx_a[num]->dev, dev_ctx_a[num]->params, &rate, 0);
+}
+
+void _alsa_set_channels (int num, unsigned int channels) {
+
+ if (!dev_ctx_a || !dev_ctx_a[num])
+ return;
+
+ snd_pcm_hw_params_set_channels (dev_ctx_a[num]->dev, dev_ctx_a[num]->params, channels);
+}
+
+ /* ---- LOCAL THREADED FUNCTIONS ---- */
+
+void* _alsa_play_thread_fn (void *ctx) {
+
+ dev_ctx_alsa_T *dev_ctx_a = (dev_ctx_alsa_T *)ctx;
+ FILE *file = NULL;
+ char *buf = NULL;
+ long size;
+ int frames, res;
+
+ file = fopen (AUDIO_BUFFER, "rb");
+
+ while (dev_ctx_a->thr_should_run && file && (access (AUDIO_BUFFER, F_OK) != -1) ) {
+ fseek (file, 0, SEEK_END);
+ size = ftell (file);
+ buf = (char*) realloc (buf, size * sizeof(char));
+ frames = (size * sizeof(char)) / 4;
+
+ fseek (file, 0, SEEK_SET);
+ fread (buf, 1, size, file);
+ fflush (file);
+
+ if ((res = snd_pcm_writei (dev_ctx_a->dev, buf, frames)) != frames) {
+ snd_pcm_recover (dev_ctx_a->dev, res, 0);
+ snd_pcm_prepare (dev_ctx_a->dev);
+ }
+ /* snd_pcm_drain (dev_ctx->dev); */
+ }
+ if (buf) free(buf);
+ if (file) fclose(file);
+
+ dev_ctx_a->thr_finished = 1;
+ return 0;
+}
diff --git a/bindings/audio/audio-alsa.h b/bindings/audio/audio-alsa.h
new file mode 100644
index 00000000..679d4eee
--- /dev/null
+++ b/bindings/audio/audio-alsa.h
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+#ifndef AUDIO_ALSA_H
+#define AUDIO_ALSA_H
+
+#include <pthread.h>
+#include <alsa/asoundlib.h>
+
+#include "audio-api.h"
+
+#define AUDIO_BUFFER "/tmp/audio_buf"
+
+typedef struct dev_ctx_alsa dev_ctx_alsa_T;
+
+struct dev_ctx_alsa {
+ char *name;
+ snd_pcm_t *dev;
+ snd_pcm_hw_params_t *params;
+ snd_mixer_elem_t *mixer_elm;
+ snd_mixer_elem_t *mixer_elm_m;
+ long vol_max;
+ long vol;
+ pthread_t thr;
+ unsigned char thr_should_run;
+ unsigned char thr_finished;
+};
+
+unsigned char _alsa_init (const char *, audioCtxHandleT *);
+void _alsa_free (const char *);
+void _alsa_play (int);
+void _alsa_stop (int);
+unsigned int _alsa_get_volume (int, unsigned int);
+void _alsa_set_volume (int, unsigned int, unsigned int);
+void _alsa_set_volume_all (int, unsigned int);
+unsigned char _alsa_get_mute (int);
+void _alsa_set_mute (int, unsigned char);
+void _alsa_set_channels (int, unsigned int);
+
+void* _alsa_play_thread_fn (void *);
+
+#endif /* AUDIO_ALSA_H */
diff --git a/bindings/audio/audio-api.c b/bindings/audio/audio-api.c
new file mode 100644
index 00000000..1ba9126c
--- /dev/null
+++ b/bindings/audio/audio-api.c
@@ -0,0 +1,383 @@
+/*
+ * 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;
+}
diff --git a/bindings/audio/audio-api.h b/bindings/audio/audio-api.h
new file mode 100644
index 00000000..f5c77c2e
--- /dev/null
+++ b/bindings/audio/audio-api.h
@@ -0,0 +1,38 @@
+/*
+ * 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.
+ */
+
+#ifndef AUDIO_API_H
+#define AUDIO_API_H
+
+/* global plugin handle, should store everything we may need */
+typedef struct {
+ int devCount;
+} pluginHandleT;
+
+/* private client context [will be destroyed when client leaves] */
+typedef struct {
+ void *audio_dev; /* handle to implementation (ALSA, PulseAudio...) */
+ char *name; /* name of the audio card */
+ int idx; /* audio card index within global array */
+ unsigned int volume[8]; /* audio volume (8 channels) : 0-100 */
+ unsigned int channels; /* audio channels : 1(mono)/2(stereo)... */
+ unsigned char mute; /* audio muted : 0(false)/1(true) */
+ unsigned char is_playing; /* audio is playing: 0(false)/1(true) */
+} audioCtxHandleT;
+
+
+#endif /* AUDIO_API_H */
diff --git a/bindings/audio/audio-pulse.c b/bindings/audio/audio-pulse.c
new file mode 100644
index 00000000..34643603
--- /dev/null
+++ b/bindings/audio/audio-pulse.c
@@ -0,0 +1,491 @@
+/*
+ * Copyright (C) 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 <stdio.h>
+
+#include "audio-api.h"
+#include "audio-pulse.h"
+
+static struct alsa_info **alsa_info = NULL;
+static struct dev_ctx_pulse **dev_ctx_p = NULL;
+static unsigned int client_count = 0;
+
+
+unsigned char _pulse_init (const char *name, audioCtxHandleT *ctx) {
+
+ pa_mainloop *pa_loop;
+ pa_mainloop_api *pa_api;
+ pa_context *pa_context;
+ pa_simple *pa;
+ pa_sample_spec *pa_spec;
+ struct timeval tv_start, tv_now;
+ int ret, error, i;
+
+ pa_loop = pa_mainloop_new ();
+ pa_api = pa_mainloop_get_api (pa_loop);
+ pa_context = pa_context_new (pa_api, "afb-audio-plugin");
+
+ /* allocate the global array if it hasn't been done */
+ if (!dev_ctx_p)
+ dev_ctx_p = (dev_ctx_pulse_T**) malloc (sizeof(dev_ctx_pulse_T*));
+
+ /* create a temporary device, to be held until sink gets discovered */
+ dev_ctx_pulse_T *dev_ctx_p_t = (dev_ctx_pulse_T*) malloc (sizeof(dev_ctx_pulse_T));
+ dev_ctx_p_t->sink_name = NULL;
+ dev_ctx_p_t->card_name = (char**) malloc (sizeof(char*));
+ dev_ctx_p_t->card_name[0] = strdup (name);
+ dev_ctx_p_t->pa_loop = pa_loop;
+ dev_ctx_p_t->pa_context = pa_context;
+
+ pa_context_set_state_callback (pa_context, _pulse_context_cb, (void*)dev_ctx_p_t);
+ pa_context_connect (pa_context, NULL, 0, NULL);
+
+ /* 1 second should be sufficient to retrieve sink info */
+ gettimeofday (&tv_start, NULL);
+ gettimeofday (&tv_now, NULL);
+ while (tv_now.tv_sec - tv_start.tv_sec <= 2) {
+ pa_mainloop_iterate (pa_loop, 0, &ret);
+
+ if (ret == -1) { /* generic error */
+ fprintf (stderr, "Stopping PulseAudio backend...\n");
+ return 0;
+ }
+
+ if ((ret > 0)&&(ret < 100)) { /* 0 and >100 are PulseAudio codes */
+ /* found a matching sink from callback */
+ fprintf (stderr, "Success : using sink n.%d\n", ret-1);
+ ctx->audio_dev = (void*)dev_ctx_p[ret-1];
+ break;
+ }
+ gettimeofday (&tv_now, NULL);
+ }
+ /* fail if we found no matching sink */
+ if (!ctx->audio_dev)
+ return 0;
+
+ /* make the client context aware of current card state */
+ ctx->mute = (unsigned char)dev_ctx_p[ret-1]->mute;
+ ctx->channels = (unsigned int)dev_ctx_p[ret-1]->volume.channels;
+ for (i = 0; i < ctx->channels; i++)
+ ctx->volume[i] = dev_ctx_p[ret-1]->volume.values[i];
+ ctx->idx = ret-1;
+
+ /* open matching sink for playback */
+ pa_spec = (pa_sample_spec*) malloc (sizeof(pa_sample_spec));
+ pa_spec->format = PA_SAMPLE_S16LE;
+ pa_spec->rate = 22050;
+ pa_spec->channels = (uint8_t)ctx->channels;
+
+ if (!(pa = pa_simple_new (NULL, "afb-audio-plugin", PA_STREAM_PLAYBACK, dev_ctx_p[ret-1]->sink_name,
+ "afb-audio-output", pa_spec, NULL, NULL, &error))) {
+ fprintf (stderr, "Error opening PulseAudio sink %s : %s\n",
+ dev_ctx_p[ret-1]->sink_name, pa_strerror(error));
+ return 0;
+ }
+ dev_ctx_p[ret-1]->pa = pa;
+ free (pa_spec);
+
+ client_count++;
+
+ fprintf (stderr, "Successfully initialized PulseAudio backend.\n");
+
+ return 1;
+}
+
+void _pulse_free (audioCtxHandleT *ctx) {
+
+ int num, i;
+
+ client_count--;
+ if (client_count > 0) return;
+
+ for (num = 0; num < (sizeof(dev_ctx_p)/sizeof(dev_ctx_pulse_T*)); num++) {
+
+ for (i = 0; num < (sizeof(dev_ctx_p[num]->card_name)/sizeof(char*)); i++) {
+ free (dev_ctx_p[num]->card_name[i]);
+ dev_ctx_p[num]->card_name[i] = NULL;
+ }
+ pa_context_disconnect (dev_ctx_p[num]->pa_context);
+ pa_context_unref (dev_ctx_p[num]->pa_context);
+ pa_mainloop_free (dev_ctx_p[num]->pa_loop);
+ pa_simple_free (dev_ctx_p[num]->pa);
+ free (dev_ctx_p[num]->sink_name);
+ dev_ctx_p[num]->pa_context = NULL;
+ dev_ctx_p[num]->pa_loop = NULL;
+ dev_ctx_p[num]->pa = NULL;
+ dev_ctx_p[num]->sink_name = NULL;
+ free (dev_ctx_p[num]);
+ }
+}
+
+void _pulse_play (audioCtxHandleT *ctx) {
+
+ dev_ctx_pulse_T* dev_ctx_p_c = (dev_ctx_pulse_T*)ctx->audio_dev;
+
+ if (!dev_ctx_p_c || dev_ctx_p_c->thr_should_run || access (AUDIO_BUFFER, F_OK) == -1)
+ return;
+
+ dev_ctx_p_c->thr_should_run = 1;
+ dev_ctx_p_c->thr_finished = 0;
+ pthread_create (&dev_ctx_p_c->thr, NULL, _pulse_play_thread_fn, (void*)dev_ctx_p_c);
+}
+
+void _pulse_stop (audioCtxHandleT *ctx) {
+
+ dev_ctx_pulse_T* dev_ctx_p_c = (dev_ctx_pulse_T*)ctx->audio_dev;
+
+ if (!dev_ctx_p_c || !dev_ctx_p_c->thr_should_run)
+ return;
+
+ dev_ctx_p_c->thr_should_run = 0;
+ while (!dev_ctx_p_c->thr_finished)
+ usleep(100000);
+ pthread_join (dev_ctx_p_c->thr, NULL);
+}
+
+unsigned int _pulse_get_volume (audioCtxHandleT *ctx, unsigned int channel) {
+
+ dev_ctx_pulse_T* dev_ctx_p_c = (dev_ctx_pulse_T*)ctx->audio_dev;
+
+ if (!dev_ctx_p_c)
+ return 0;
+
+ _pulse_refresh_sink (dev_ctx_p_c);
+
+ return (dev_ctx_p_c->volume.values[channel]*100)/PA_VOLUME_NORM;
+}
+
+void _pulse_set_volume (audioCtxHandleT *ctx, unsigned int channel, unsigned int vol) {
+
+ dev_ctx_pulse_T* dev_ctx_p_c = (dev_ctx_pulse_T*)ctx->audio_dev;
+ struct pa_cvolume volume;
+
+ if (!dev_ctx_p_c)
+ return;
+
+ volume = dev_ctx_p_c->volume;
+ volume.values[channel] = (vol*PA_VOLUME_NORM)/100;
+
+ pa_context_set_sink_volume_by_name (dev_ctx_p_c->pa_context, dev_ctx_p_c->sink_name,
+ &volume, NULL, NULL);
+ _pulse_refresh_sink (dev_ctx_p_c);
+}
+
+void _pulse_set_volume_all (audioCtxHandleT *ctx, unsigned int vol) {
+
+ dev_ctx_pulse_T* dev_ctx_p_c = (dev_ctx_pulse_T*)ctx->audio_dev;
+ struct pa_cvolume volume;
+
+ if (!dev_ctx_p_c)
+ return;
+
+ pa_cvolume_init (&volume);
+ pa_cvolume_set (&volume, dev_ctx_p_c->volume.channels, vol);
+
+ pa_context_set_sink_volume_by_name (dev_ctx_p_c->pa_context, dev_ctx_p_c->sink_name,
+ &volume, NULL, NULL);
+ _pulse_refresh_sink (dev_ctx_p_c);
+}
+
+unsigned char _pulse_get_mute (audioCtxHandleT *ctx) {
+
+ dev_ctx_pulse_T* dev_ctx_p_c = (dev_ctx_pulse_T*)ctx->audio_dev;
+
+ if (!dev_ctx_p_c)
+ return 0;
+
+ _pulse_refresh_sink (dev_ctx_p_c);
+
+ return (unsigned char)dev_ctx_p_c->mute;
+}
+
+void _pulse_set_mute (audioCtxHandleT *ctx, unsigned char mute) {
+
+ dev_ctx_pulse_T* dev_ctx_p_c = (dev_ctx_pulse_T*)ctx->audio_dev;
+
+ if (!dev_ctx_p_c)
+ return;
+
+ pa_context_set_sink_mute_by_name (dev_ctx_p_c->pa_context, dev_ctx_p_c->sink_name,
+ (int)mute, NULL, NULL);
+ _pulse_refresh_sink (dev_ctx_p_c);
+}
+
+ /* ---- LOCAL HELPER FUNCTIONS ---- */
+
+void _pulse_refresh_sink (dev_ctx_pulse_T* dev_ctx_p_c) {
+
+ pa_mainloop_api *pa_api;
+
+ dev_ctx_p_c->pa_loop = pa_mainloop_new ();
+ pa_api = pa_mainloop_get_api (dev_ctx_p_c->pa_loop);
+ dev_ctx_p_c->pa_context = pa_context_new (pa_api, "afb-audio-plugin");
+
+ dev_ctx_p_c->refresh = 1;
+
+ switch (pa_context_get_state (dev_ctx_p_c->pa_context)) {
+ case PA_CONTEXT_READY:
+ pa_context_get_sink_info_by_name (dev_ctx_p_c->pa_context,
+ dev_ctx_p_c->sink_name,
+ _pulse_sink_info_cb, (void*)dev_ctx_p_c);
+ break;
+ default:
+ return;
+ }
+
+ while (dev_ctx_p_c->refresh)
+ pa_mainloop_iterate (dev_ctx_p_c->pa_loop, 0, NULL);
+}
+
+void _pulse_enumerate_cards () {
+
+ void **cards, **card;
+ char *name, *found, *alsa_name, *card_name;
+ int new_info, i, num = 0;
+
+ /* allocate the global alsa array */
+ alsa_info = (alsa_info_T**) malloc (sizeof(alsa_info_T*));
+ alsa_info[0] = (alsa_info_T*) malloc (sizeof(alsa_info_T));
+ alsa_info[0]->device = NULL;
+ alsa_info[0]->synonyms = NULL;
+
+ /* we use ALSA to enumerate cards */
+ snd_device_name_hint (-1, "pcm", &cards);
+ card = cards;
+
+ for (; *card != NULL; card++) {
+ name = snd_device_name_get_hint (*card, "NAME");
+ new_info = 1;
+
+ /* alsa name is before ':' (if ':' misses, then it has no card) */
+ found = strstr (name, ":");
+ if (!found) continue;
+ /* */
+ alsa_name = (char*) malloc (found-name+1);
+ strncpy (alsa_name, name, found-name);
+ alsa_name[found-name] = '\0';
+
+ /* card name is the invariant between "CARD=" and ',' */
+ found = strstr (name, "CARD=");
+ if (!found) continue;
+ /* */
+ found += 5;
+ card_name = strdup (found);
+ found = strstr (card_name, ",");
+ if (found) card_name[found-card_name] = '\0';
+
+ /* was the card name already listed in the global alsa array ? */
+ for (i = 0; i < (sizeof(alsa_info)/sizeof(alsa_info_T*)); i++) {
+
+ if (alsa_info[i]->device &&
+ !strcmp (alsa_info[i]->device, card_name)) {
+ /* it was ; add the alsa name as a new synonym */
+ asprintf (&alsa_info[i]->synonyms, "%s:%s", alsa_info[i]->synonyms, alsa_name);
+ new_info = 0;
+ break;
+ }
+ }
+ /* it was not ; create it */
+ if (new_info) {
+ alsa_info = (alsa_info_T**) realloc (alsa_info, (num+1)*sizeof(alsa_info_T*));
+ alsa_info[num] = (alsa_info_T*) malloc (sizeof(alsa_info_T));
+ alsa_info[num]->device = strdup (card_name);
+ asprintf (&alsa_info[num]->synonyms, ":%s", alsa_name);
+ num++;
+ }
+ free (alsa_name);
+ free (card_name);
+ }
+}
+
+char** _pulse_find_cards (const char *name) {
+
+ char **cards = NULL;
+ char *needle, *found, *next;
+ int num, i = 0;
+
+ if (!alsa_info)
+ _pulse_enumerate_cards ();
+
+ asprintf (&needle, ":%s", name);
+
+ for (num = 0; num < (sizeof(alsa_info)/sizeof(alsa_info_T*)); num++) {
+
+ found = strstr (alsa_info[num]->synonyms, needle);
+ while (found) {
+ /* if next character is not ':' or '\0', we are wrong */
+ if ((found[strlen(name)+1] != ':') && (found[strlen(name)+1] != '\0')) {
+ found = strstr (found+1, needle);
+ continue;
+ }
+ /* found it ; now return all the "synonym" cards */
+ found = strstr (alsa_info[num]->synonyms, ":");
+ while (found) {
+ next = strstr (found+1, ":");
+ if (!next) break;
+ cards = (char**) realloc (cards, (i+1)*sizeof(char*));
+ cards[i] = (char*) malloc (next-found+1);
+ strncpy (cards[i], found+1, next-found);
+ cards[i][next-found-1] = '\0';
+ found = next; i++;
+ }
+ }
+ }
+ free (needle);
+
+ return cards;
+}
+
+ /* ---- LOCAL CALLBACK FUNCTIONS ---- */
+
+void _pulse_context_cb (pa_context *context, void *data) {
+
+ pa_context_state_t state = pa_context_get_state (context);
+ dev_ctx_pulse_T *dev_ctx_p_t = (dev_ctx_pulse_T *)data;
+
+ if (state == PA_CONTEXT_FAILED) {
+ fprintf (stderr, "Could not connect to PulseAudio !\n");
+ pa_mainloop_quit (dev_ctx_p_t->pa_loop, -1);
+ pa_context_disconnect (dev_ctx_p_t->pa_context);
+ pa_context_unref (dev_ctx_p_t->pa_context);
+ pa_mainloop_free (dev_ctx_p_t->pa_loop);
+ }
+
+ if (state == PA_CONTEXT_READY)
+ pa_context_get_sink_info_list (context, _pulse_sink_list_cb, (void*)dev_ctx_p_t);
+}
+
+void _pulse_sink_list_cb (pa_context *context, const pa_sink_info *info,
+ int eol, void *data) {
+
+ dev_ctx_pulse_T *dev_ctx_p_t = (dev_ctx_pulse_T *)data;
+ const char *device_string;
+ char *device, *found;
+ char **cards;
+ int num, i;
+
+ if (eol != 0)
+ return;
+
+ device_string = pa_proplist_gets (info->proplist, "device.string");
+ /* ignore sinks with no cards */
+ if (!device_string)
+ return;
+
+ /* was a sink with similar name already found ? */
+ for (num = 0; num < (sizeof(dev_ctx_p)/sizeof(dev_ctx_pulse_T*)); num++) {
+ if (dev_ctx_p[num]->sink_name &&
+ !strcmp (dev_ctx_p[num]->sink_name, info->name)) {
+
+ /* yet it was, did it have the required card ? */
+ cards = dev_ctx_p[num]->card_name;
+ for (i = 0; i < (sizeof(cards)/sizeof(char*)); i++) {
+ if (!strcmp (cards[i], dev_ctx_p_t->card_name[0])) {
+ /* it did : stop there and succeed */
+ fprintf (stderr, "Found matching sink : %s\n", info->name);
+ /* we return num+1 because '0' is already used */
+ pa_mainloop_quit (dev_ctx_p_t->pa_loop, num+1);
+ pa_context_disconnect (dev_ctx_p_t->pa_context);
+ pa_context_unref (dev_ctx_p_t->pa_context);
+ pa_mainloop_free (dev_ctx_p_t->pa_loop);
+ }
+ }
+ /* it did not, ignore and return */
+ return;
+ }
+ }
+ num++;
+
+ /* remove ending ":0",":1"... in device name */
+ device = strdup (device_string);
+ found = strstr (device, ":");
+ if (found) device[found-device] = '\0';
+
+ /* new sink, find all the cards it manages, fail if none */
+ cards = _pulse_find_cards (device);
+ free (device);
+ if (!cards)
+ return;
+
+ /* everything is well, register it in global array */
+ dev_ctx_p_t->sink_name = strdup (info->name);
+ dev_ctx_p_t->card_name = cards;
+ dev_ctx_p_t->mute = info->mute;
+ dev_ctx_p_t->volume = info->volume;
+ dev_ctx_p_t->thr_should_run = 0;
+ dev_ctx_p_t->thr_finished = 0;
+ dev_ctx_p[num] = dev_ctx_p_t;
+
+ /* does this new sink have the card we are looking for ? */ /* TODO : factorize this */
+ for (i = 0; i < (sizeof(cards)/sizeof(char*)); i++) {
+ if (!strcmp (cards[i], dev_ctx_p_t->card_name[0])) {
+ /* it did : stop there and succeed */
+ fprintf (stderr, "Found matching sink : %s\n", info->name);
+ /* we return num+1 because '0' is already used */
+ pa_mainloop_quit (dev_ctx_p_t->pa_loop, num+1);
+ pa_context_disconnect (dev_ctx_p_t->pa_context);
+ pa_context_unref (dev_ctx_p_t->pa_context);
+ pa_mainloop_free (dev_ctx_p_t->pa_loop);
+ }
+ }
+}
+
+void _pulse_sink_info_cb (pa_context *context, const pa_sink_info *info,
+ int eol, void *data) {
+
+ dev_ctx_pulse_T *dev_ctx_p_c = (dev_ctx_pulse_T *)data;
+
+ if (eol != 0)
+ return;
+
+ dev_ctx_p_c->refresh = 0;
+ dev_ctx_p_c->mute = info->mute;
+ dev_ctx_p_c->volume = info->volume;
+}
+
+ /* ---- LOCAL THREADED FUNCTIONS ---- */
+
+void* _pulse_play_thread_fn (void *ctx) {
+
+ dev_ctx_pulse_T *dev_ctx_p_c = (dev_ctx_pulse_T *)ctx;
+ FILE *file = NULL;
+ char *buf = NULL;
+ long size;
+ int error;
+
+ file = fopen (AUDIO_BUFFER, "rb");
+
+ while (dev_ctx_p_c->thr_should_run && file && (access (AUDIO_BUFFER, F_OK) != -1) ) {
+ fseek (file, 0, SEEK_END);
+ size = ftell (file);
+ buf = (char*) realloc (buf, size * sizeof(char));
+
+ fseek (file, 0, SEEK_SET);
+ fread (buf, 1, size, file);
+ fflush (file);
+
+ if (pa_simple_write (dev_ctx_p_c->pa, buf, size*2, &error) < 0)
+ fprintf (stderr, "Error writing to PulseAudio : %s\n", pa_strerror (error));
+ /* pa_simple_drain (dev_ctx_p_c->pa); */
+ }
+ if (buf) free(buf);
+ if (file) fclose(file);
+
+ dev_ctx_p_c->thr_finished = 1;
+ return 0;
+}
diff --git a/bindings/audio/audio-pulse.h b/bindings/audio/audio-pulse.h
new file mode 100644
index 00000000..ad8ff490
--- /dev/null
+++ b/bindings/audio/audio-pulse.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef AUDIO_PULSE_H
+#define AUDIO_PULSE_H
+
+#include <sys/time.h>
+#include <pulse/pulseaudio.h>
+#include <pulse/simple.h>
+#include <pulse/error.h>
+
+#include "audio-alsa.h"
+
+typedef struct dev_ctx_pulse dev_ctx_pulse_T;
+typedef struct alsa_info alsa_info_T;
+
+struct dev_ctx_pulse {
+ char *sink_name;
+ char **card_name;
+ pa_mainloop *pa_loop;
+ pa_context *pa_context;
+ pa_simple *pa;
+ pa_cvolume volume;
+ int mute;
+ unsigned char refresh;
+ pthread_t thr;
+ unsigned char thr_should_run;
+ unsigned char thr_finished;
+};
+
+struct alsa_info {
+ char *device;
+ char *synonyms;
+};
+
+unsigned char _pulse_init (const char *, audioCtxHandleT *);
+void _pulse_free (audioCtxHandleT *);
+void _pulse_play (audioCtxHandleT *);
+void _pulse_stop (audioCtxHandleT *);
+unsigned int _pulse_get_volume (audioCtxHandleT *, unsigned int);
+void _pulse_set_volume (audioCtxHandleT *, unsigned int, unsigned int);
+void _pulse_set_volume_all (audioCtxHandleT *, unsigned int);
+unsigned char _pulse_get_mute (audioCtxHandleT *);
+void _pulse_set_mute (audioCtxHandleT *, unsigned char);
+
+void _pulse_context_cb (pa_context *, void *);
+void _pulse_sink_list_cb (pa_context *, const pa_sink_info *, int, void *);
+void _pulse_sink_info_cb (pa_context *, const pa_sink_info *, int, void *);
+void* _pulse_play_thread_fn (void *);
+void _pulse_refresh_sink (dev_ctx_pulse_T *);
+
+#endif /* AUDIO_PULSE_H */
diff --git a/bindings/audio/export.map b/bindings/audio/export.map
new file mode 100644
index 00000000..0ef1ac79
--- /dev/null
+++ b/bindings/audio/export.map
@@ -0,0 +1 @@
+{ global: afbBindingV1Register; local: *; };