* 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.
*/
#include "audio-api.h"
+#include "audio-alsa.h"
snd_mixer_selem_channel_id_t SCHANNELS[8] = {
SND_MIXER_SCHN_FRONT_LEFT,
SND_MIXER_SCHN_SIDE_RIGHT
};
-PUBLIC unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
+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;
int num, i;
if (snd_pcm_open (&dev, name, SND_PCM_STREAM_PLAYBACK, 0) < 0)
- return -1;
+ return 0;
snd_pcm_hw_params_malloc (¶ms);
snd_pcm_hw_params_any (dev, params);
snd_pcm_hw_params_set_channels (dev, params, ctx->channels);
if (snd_pcm_hw_params (dev, params) < 0) {
snd_pcm_hw_params_free (params);
- return -1;
+ return 0;
}
snd_pcm_prepare (dev);
snd_mixer_open (&mixer, 0);
if (snd_mixer_attach (mixer, name) < 0) {
snd_pcm_hw_params_free (params);
- return -1;
+ return 0;
}
snd_mixer_selem_register (mixer, NULL, NULL);
snd_mixer_load (mixer);
/* 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 = (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++) {
+ 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))
- return -1;
+ 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));
+ dev_ctx_a = (dev_ctx_alsa_T**) realloc (dev_ctx_a, (num+1)*sizeof(dev_ctx_alsa_T*));
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;
ctx->volume[i] = _alsa_get_volume (num, i);
ctx->mute = _alsa_get_mute (num);
ctx->idx = num;
+ ctx->name = strdup (name);
- return 0;
+ fprintf (stderr, "Successfully initialized ALSA backend.\n");
+
+ return 1;
}
-PUBLIC void _alsa_free (const char *name) {
+void _alsa_free (const char *name) {
int num;
- for (num = 0; num < (sizeof(dev_ctx_a)/sizeof(dev_ctx_alsa_T)); 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);
}
}
-PUBLIC void _alsa_play (unsigned int num) {
+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)
pthread_create (&dev_ctx_a[num]->thr, NULL, _alsa_play_thread_fn, (void*)dev_ctx_a[num]);
}
-PUBLIC void _alsa_stop (unsigned int num) {
+void _alsa_stop (int num) {
if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->thr_should_run)
return;
pthread_join (dev_ctx_a[num]->thr, NULL);
}
-PUBLIC int _alsa_get_volume (unsigned int num, unsigned int channel) {
+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;
+ return 0;
snd_mixer_selem_get_playback_volume (dev_ctx_a[num]->mixer_elm, SCHANNELS[channel], &dev_ctx_a[num]->vol);
- return (int)(dev_ctx_a[num]->vol*100)/dev_ctx_a[num]->vol_max;
+ return (unsigned int)(dev_ctx_a[num]->vol*100)/dev_ctx_a[num]->vol_max;
}
-PUBLIC void _alsa_set_volume (unsigned int num, unsigned int channel, int vol) {
+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 ||
- 0 > vol > 100)
+ 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);
-
}
-PUBLIC void _alsa_set_volume_all (unsigned int num, int vol) {
+void _alsa_set_volume_all (int num, unsigned int vol) {
if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm ||
- 0 > vol > 100)
+ vol > 100)
snd_mixer_selem_set_playback_volume_all (dev_ctx_a[num]->mixer_elm, (vol*dev_ctx_a[num]->vol_max)/100);
}
-PUBLIC unsigned char _alsa_get_mute (unsigned int num) {
+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;
+ 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);
return (unsigned char)!mute;
}
-PUBLIC void _alsa_set_mute (unsigned int num, unsigned char tomute) {
+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 < 0)
+ 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) {
snd_mixer_selem_set_playback_switch_all (elm_m, !mute);
}
-PUBLIC void _alsa_set_rate (unsigned int num, unsigned int rate) {
+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);
}
-PUBLIC void _alsa_set_channels (unsigned int num, unsigned int channels) {
+void _alsa_set_channels (int num, unsigned int channels) {
if (!dev_ctx_a || !dev_ctx_a[num])
return;
/* ---- LOCAL THREADED FUNCTIONS ---- */
-STATIC void* _alsa_play_thread_fn (void *ctx) {
+void* _alsa_play_thread_fn (void *ctx) {
dev_ctx_alsa_T *dev_ctx_a = (dev_ctx_alsa_T *)ctx;
FILE *file = NULL;
Code Review / src / app-framework-binder.git / blobdiff