X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=plugins%2Faudio%2Faudio-alsa.c;h=1f3c7a2e02e52e7829f9c1490cffbaa9b6afd9f0;hb=3d28e7d00cd8641bf600d47ed0e3e7e57cb5b439;hp=8c08c8dbc377359557889f42c1844798414b97cf;hpb=241a06586b3602962874e6d2ac09e258ad6173d2;p=src%2Fapp-framework-binder.git

diff --git a/plugins/audio/audio-alsa.c b/plugins/audio/audio-alsa.c
index 8c08c8db..1f3c7a2e 100644
--- a/plugins/audio/audio-alsa.c
+++ b/plugins/audio/audio-alsa.c
@@ -1,11 +1,45 @@
+/*
+ * Copyright (C) 2015 "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
+};
+
 PUBLIC unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
 
     snd_pcm_t *dev;
     snd_pcm_hw_params_t *params;
-    int num;
+    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)
         return 0;
@@ -14,35 +48,90 @@ PUBLIC unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
     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, &ctx->rate, 0);
+    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);
         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 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) {
-        dev_ctx = (dev_ctx_T**) malloc (sizeof(dev_ctx_T));
-        dev_ctx[0] = (dev_ctx_T*) malloc (sizeof(dev_ctx_T));
-        dev_ctx[0]->name = NULL;
-        dev_ctx[0]->dev = NULL;
+    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)/sizeof(dev_ctx_T)); num++) {
-        if (dev_ctx[num]->name &&
-           !strcmp (dev_ctx[num]->name, name))
+    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 0;
     }
     num++;
 
     /* it's not... let us add it to the global array */
-    dev_ctx[num] = (dev_ctx_T*) malloc (sizeof(dev_ctx_T));
-    dev_ctx[num]->name = strdup (name);
-    dev_ctx[num]->dev = dev;
-    dev_ctx[num]->params = params;
+    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;
+    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);
+
+    if (verbose) fprintf (stderr, "Successfully initialized ALSA backend.\n");
 
     return 1;
 }
@@ -51,32 +140,162 @@ PUBLIC void _alsa_free (const char *name) {
 
     int num;
 
-    for (num = 0; num < (sizeof(dev_ctx)/sizeof(dev_ctx_T)); num++) {
-        if (dev_ctx[num]->name &&
-           !strcmp (dev_ctx[num]->name, name)) {
-            snd_pcm_close (dev_ctx[num]->dev);
-            snd_pcm_hw_params_free (dev_ctx[num]->params);
-            free (dev_ctx[num]->name);
-            dev_ctx[num]->name = NULL;
-            dev_ctx[num]->dev = NULL;
-            free(dev_ctx[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;
         }
     }
 }
 
-PUBLIC void _alsa_play (unsigned int num, void *buf, int len) {
+PUBLIC 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]);
+}
+
+PUBLIC 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);
+}
+
+PUBLIC 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 (int)(dev_ctx_a[num]->vol*100)/dev_ctx_a[num]->vol_max;
+}
+
+PUBLIC void _alsa_set_volume (int num, unsigned int channel, unsigned int vol) {
 
-    if (!dev_ctx || !dev_ctx[num])
+    if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm ||
+        vol > 100)
         return;
 
-    int16_t *cbuf = (int16_t *)buf;
-    int frames = len / 2;
-    int res;
+    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 (int num, unsigned int vol) {
 
-    if ((res = snd_pcm_writei (dev_ctx[num]->dev, cbuf, frames)) != frames) {
-        snd_pcm_recover (dev_ctx[num]->dev, res, 0);
-        snd_pcm_prepare (dev_ctx[num]->dev);
+    if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm ||
+        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 (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;
+}
+
+PUBLIC 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;
     }
-    /* snd_pcm_drain (dev_ctx[num]->dev); */
-}
\ No newline at end of file
+
+    if (snd_mixer_selem_has_playback_switch (elm_m))
+        snd_mixer_selem_set_playback_switch_all (elm_m, !mute);
+}
+
+PUBLIC 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 (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 ---- */
+
+STATIC 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;
+}