t0lte: user configureable voice/streaming volumes [1/2]

This uses 4 files to store the voice volume:
incall_earpiece, incall_headphone, incall_speaker, incall_bt, and 2
for streaming volume: out_speaker, out_headphone located /data/local/audio.

Change-Id: I4269dc65d48e04b5e908b20704128241683d5a80

1 files changed, 114 insertions, 9 deletions

diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index 3cb40c2..6a4ca04 100755
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -25,6 +25,7 @@
 #include <pthread.h>
 #include <stdint.h>
 #include <sys/time.h>
+#include <sys/stat.h>
 #include <stdlib.h>
 #include <expat.h>
 #include <dlfcn.h>
@@ -196,7 +197,6 @@ struct m0_dev_cfg {
 
 void *mCsdHandle;
 int rx_dev_id, tx_dev_id, old_rx_dev;
-int voice_index;
 
 static int (*csd_client_init)();
 static int (*csd_client_deinit)();
@@ -533,7 +533,6 @@ static void set_incall_device(struct m0_audio_device *adev)
         case AUDIO_DEVICE_OUT_EARPIECE:
             rx_dev_id = DEVICE_HANDSET_RX_ACDB_ID;
             tx_dev_id = DEVICE_HANDSET_TX_ACDB_ID;
-            voice_index = 5;
             break;
         case AUDIO_DEVICE_OUT_SPEAKER:
         case AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET:
@@ -541,13 +540,11 @@ static void set_incall_device(struct m0_audio_device *adev)
         case AUDIO_DEVICE_OUT_AUX_DIGITAL:
             rx_dev_id = DEVICE_SPEAKER_MONO_RX_ACDB_ID;
             tx_dev_id = DEVICE_SPEAKER_TX_ACDB_ID;
-            voice_index = 7;
             break;
         case AUDIO_DEVICE_OUT_WIRED_HEADSET:
         case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
             rx_dev_id = DEVICE_HEADSET_RX_ACDB_ID;
             tx_dev_id = DEVICE_HEADSET_TX_ACDB_ID;
-            voice_index = 5;
             break;
         case AUDIO_DEVICE_OUT_BLUETOOTH_SCO:
         case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET:
@@ -559,12 +556,10 @@ static void set_incall_device(struct m0_audio_device *adev)
                 rx_dev_id = DEVICE_BT_SCO_RX_ACDB_ID;
                 tx_dev_id = DEVICE_BT_SCO_TX_ACDB_ID;
             }
-            voice_index = 7;
             break;
         default:
             rx_dev_id = DEVICE_HANDSET_RX_ACDB_ID;
             tx_dev_id = DEVICE_HANDSET_TX_ACDB_ID;
-            voice_index = 5;
             break;
     }
 
@@ -610,8 +605,25 @@ static void set_input_volumes(struct m0_audio_device *adev, int main_mic_on,
 {
 }
 
-static void set_output_volumes(struct m0_audio_device *adev, bool tty_volume)
+static void set_output_volumes(struct m0_audio_device *adev)
 {
+    int volume;
+
+    switch(adev->out_device) {
+      case AUDIO_DEVICE_OUT_SPEAKER:
+          volume = get_volume(OUT_SPEAKER);
+          ALOGV("%s: SPEAKER Volume: %i", __func__, volume);
+          mixer_ctl_set_value(adev->mixer_ctls.speaker_volume,0,volume);
+          mixer_ctl_set_value(adev->mixer_ctls.speaker_volume,1,volume);
+          break;
+      case AUDIO_DEVICE_OUT_WIRED_HEADSET:
+      case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
+          volume = get_volume(OUT_HEADPHONE);
+          ALOGV("%s: HEADPHONE Volume: %i", __func__, volume);
+          mixer_ctl_set_value(adev->mixer_ctls.headphone_volume,0,volume);
+          mixer_ctl_set_value(adev->mixer_ctls.headphone_volume,1,volume);
+          break;
+    }
 }
 
 static void force_all_standby(struct m0_audio_device *adev)
@@ -742,6 +754,8 @@ static void select_output_device(struct m0_audio_device *adev)
 
     set_eq_filter(adev);
 
+    set_output_volumes(adev);
+
     if (adev->mode == AUDIO_MODE_IN_CALL) {
         if (!bt_on) {
             /* force tx path according to TTY mode when in call */
@@ -2719,16 +2733,19 @@ static int adev_init_check(const struct audio_hw_device *dev)
 static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
 {
     struct m0_audio_device *adev = (struct m0_audio_device *)dev;
+    int voice_index;
 
     adev->voice_volume = volume;
 
+    voice_index = update_voice_index(adev);
+
     ALOGD("%s: Voice Index: %i", __func__, voice_index);
 
     if (adev->mode == AUDIO_MODE_IN_CALL) {
         if (csd_volume_index == NULL) {
             ALOGE("dlsym: Error:%s Loading csd_volume_index", dlerror());
         } else {
-            volume = volume * voice_index;
+            volume = volume * (float)voice_index;
             ALOGD("%s: calling csd_volume_index(%f)", __func__, volume);
             csd_volume_index(volume);
         }
@@ -2736,6 +2753,36 @@ static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
     return 0;
 }
 
+int update_voice_index(struct m0_audio_device *adev)
+{
+      int voice_index;
+
+      switch(adev->out_device) {
+        case AUDIO_DEVICE_OUT_EARPIECE:
+            voice_index = get_volume(INCALL_EARPIECE);
+            break;
+        case AUDIO_DEVICE_OUT_SPEAKER:
+        case AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET:
+        case AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET:
+        case AUDIO_DEVICE_OUT_AUX_DIGITAL:
+            voice_index = get_volume(INCALL_SPEAKER);
+            break;
+        case AUDIO_DEVICE_OUT_WIRED_HEADSET:
+        case AUDIO_DEVICE_OUT_WIRED_HEADPHONE:
+            voice_index = get_volume(INCALL_HEADPHONE);
+            break;
+        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO:
+        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET:
+        case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT:
+            voice_index = get_volume(INCALL_BT);
+            break;
+        default:
+            voice_index = get_volume(INCALL_EARPIECE);
+            break;
+    }
+    return voice_index;
+}
+
 static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
 {
     return -ENOSYS;
@@ -3151,11 +3198,63 @@ static int adev_config_parse(struct m0_audio_device *adev)
     return ret;
 }
 
+static int volume_file_check()
+{
+  FILE *f;
+  int i;
+  int default_voice_vol = 5;
+  int default_stream_vol = 50;
+  struct stat st = {0};
+
+  if (stat(AUDIO_DIR, &st) == -1) {
+    ALOGE("Directory %s does not exist, skip creating volume files\n", AUDIO_DIR);
+    return -ENODEV;
+  }
+
+  for ( i = 0; i < MAX_NUM_VOLUME_FILES; i++ ) {
+    f = fopen(volume_file[i], "r");
+    if(!f){
+      ALOGW("Failed to open %s, attempting to create file\n", volume_file[i]);
+      f = fopen(volume_file[i], "w");
+      if(!f){
+        ALOGE("Failed to create %s\n", volume_file[i]);
+        continue;
+      }else{
+        ALOGI("Successfully created %s\n", volume_file[i]);
+        /* first 4 files are for incall voice, anything over that is considered streaming out */
+        if(i > 3)
+           fprintf(f, "%d", default_stream_vol);
+        else
+           fprintf(f, "%d", default_voice_vol);
+        fclose(f);
+        chmod(volume_file[i], 0666);
+      }
+    }else{
+      chmod(volume_file[i],0666);
+    }
+  }
+
+  return 0;
+}
+
+int get_volume(char *file)
+{
+  FILE *f;
+  int index = 1;
+
+  f = fopen(file, "r");
+  if(f) {
+    fscanf(f, "%i", &index);
+    fclose(f);
+  }
+  return index;
+}
+
 static int adev_open(const hw_module_t* module, const char* name,
                      hw_device_t** device)
 {
     struct m0_audio_device *adev;
-    int ret;
+    int ret, volfs;
 
     if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
         return -EINVAL;
@@ -3195,10 +3294,16 @@ static int adev_open(const hw_module_t* module, const char* name,
     adev->mixer_ctls.mixinl_in1l_volume = mixer_get_ctl_by_name(adev->mixer, "MIXINL IN1L Volume");
     adev->mixer_ctls.mixinl_in2l_volume = mixer_get_ctl_by_name(adev->mixer, "MIXINL IN2L Volume");
 
+    /* speaker/headphone volume control*/
+    adev->mixer_ctls.speaker_volume = mixer_get_ctl_by_name(adev->mixer, "Speaker Volume");
+    adev->mixer_ctls.headphone_volume = mixer_get_ctl_by_name(adev->mixer, "Headphone Volume");
+
     ret = adev_config_parse(adev);
     if (ret != 0)
         goto err_mixer;
 
+    volfs = volume_file_check();
+
     /* Set the default route before the PCM stream is opened */
     pthread_mutex_lock(&adev->lock);
     adev->mode = AUDIO_MODE_NORMAL;