hal: Enhance voice concurrency support for 8916

- All VoIP, compress, deep buffer, record usecases need to close
before voice call setup and don't allow these usecases during
voice call on 8916.
- setMode(IN_CALL) itself is not sufficient to know if we are
in actual voice call.
- Add keyvalue parameters support to know if we are in voice call
and policy hal can query the same and make decissions based on it.

CRs-Fixed: 662804
Change-Id: I20d660fadd07c4d227a7e3dfe356fc39806ca167

1 files changed, 19 insertions, 0 deletions

diff --git a/hal/voice_extn/voice_extn.c b/hal/voice_extn/voice_extn.c
index d42cc536..ea25a4b1 100644
--- a/hal/voice_extn/voice_extn.c
+++ b/hal/voice_extn/voice_extn.c
@@ -40,6 +40,7 @@
 #define AUDIO_PARAMETER_KEY_ALL_CALL_STATES     "all_call_states"
 #define AUDIO_PARAMETER_KEY_DEVICE_MUTE         "device_mute"
 #define AUDIO_PARAMETER_KEY_DIRECTION           "direction"
+#define AUDIO_PARAMETER_KEY_IN_CALL             "in_call"
 
 #define VOICE_EXTN_PARAMETER_VALUE_MAX_LEN 256
 
@@ -505,6 +506,15 @@ int voice_extn_set_parameters(struct audio_device *adev,
         }
     }
 
+    err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_IN_CALL, str_value,
+                            sizeof(str_value));
+    if (err >= 0) {
+          str_parms_del(parms, AUDIO_PARAMETER_KEY_IN_CALL);
+           if (!strncmp("true", str_value, sizeof("true"))) {
+           adev->voice.is_in_call = true;
+        }
+    }
+
 done:
     ALOGV("%s: exit with code(%d)", __func__, ret);
     free(kv_pairs);
@@ -536,10 +546,19 @@ void voice_extn_get_parameters(const struct audio_device *adev,
     int ret;
     char value[VOICE_EXTN_PARAMETER_VALUE_MAX_LEN] = {0};
     char *str = str_parms_to_str(query);
+    int val = 0;
 
     ALOGV_IF(str != NULL, "%s: enter %s", __func__, str);
     free(str);
 
+    ret = str_parms_get_str(query, AUDIO_PARAMETER_KEY_IN_CALL, value,
+                            sizeof(value));
+    if (ret >=0) {
+        if (adev->voice.is_in_call)
+            val = 1;
+        str_parms_add_int(reply, AUDIO_PARAMETER_KEY_IN_CALL, val);
+    }
+
     ret = str_parms_get_str(query, AUDIO_PARAMETER_KEY_AUDIO_MODE, value,
                             sizeof(value));
     if (ret >= 0) {