Add support for audio session id based routing

Bug: 233910083
Test: atest AudioServiceHostTest AudioHostTest
Change-Id: I51896ad9e1c310c2aa346dd9292d19438936275a
diff --git a/media/libaudioclient/AudioPolicy.cpp b/media/libaudioclient/AudioPolicy.cpp
index 4d2b6b1..6bb0cbe 100644
--- a/media/libaudioclient/AudioPolicy.cpp
+++ b/media/libaudioclient/AudioPolicy.cpp
@@ -57,6 +57,10 @@
     case RULE_EXCLUDE_USERID:
         mValue.mUserId = (int) parcel->readInt32();
         break;
+    case RULE_MATCH_AUDIO_SESSION_ID:
+    case RULE_EXCLUDE_AUDIO_SESSION_ID:
+        mValue.mAudioSessionId = (audio_session_t) parcel->readInt32();
+        break;
     default:
         ALOGE("Trying to build AudioMixMatchCriterion from unknown rule %d", mRule);
         return BAD_VALUE;
diff --git a/media/libaudioclient/PolicyAidlConversion.cpp b/media/libaudioclient/PolicyAidlConversion.cpp
index 520f09c..4423eb6 100644
--- a/media/libaudioclient/PolicyAidlConversion.cpp
+++ b/media/libaudioclient/PolicyAidlConversion.cpp
@@ -158,6 +158,11 @@
                     convertIntegral<int>(UNION_GET(aidl, userId).value()));
             *rule |= RULE_MATCH_USERID;
             return legacy;
+        case media::AudioMixMatchCriterionValue::audioSessionId:
+            legacy.mAudioSessionId = VALUE_OR_RETURN(
+                    aidl2legacy_int32_t_audio_session_t(UNION_GET(aidl, audioSessionId).value()));
+            *rule |= RULE_MATCH_AUDIO_SESSION_ID;
+            return legacy;
     }
     return unexpected(BAD_VALUE);
 }
@@ -185,7 +190,10 @@
         case RULE_MATCH_USERID:
             UNION_SET(aidl, userId, VALUE_OR_RETURN(convertReinterpret<uint32_t>(legacy.mUserId)));
             break;
-
+        case RULE_MATCH_AUDIO_SESSION_ID:
+            UNION_SET(aidl, audioSessionId,
+                VALUE_OR_RETURN(legacy2aidl_audio_session_t_int32_t(legacy.mAudioSessionId)));
+            break;
         default:
             return unexpected(BAD_VALUE);
     }
diff --git a/media/libaudioclient/aidl/android/media/AudioMixMatchCriterionValue.aidl b/media/libaudioclient/aidl/android/media/AudioMixMatchCriterionValue.aidl
index 921a93a..0f373a2 100644
--- a/media/libaudioclient/aidl/android/media/AudioMixMatchCriterionValue.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioMixMatchCriterionValue.aidl
@@ -28,4 +28,6 @@
     /** Interpreted as uid_t. */
     int uid;
     int userId;
+    /** Interpreted as audio_session_t. */
+    int audioSessionId;
 }
diff --git a/media/libaudioclient/include/media/AudioPolicy.h b/media/libaudioclient/include/media/AudioPolicy.h
index cab476e..61f2069 100644
--- a/media/libaudioclient/include/media/AudioPolicy.h
+++ b/media/libaudioclient/include/media/AudioPolicy.h
@@ -34,11 +34,13 @@
 #define RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET (0x1 << 1)
 #define RULE_MATCH_UID                      (0x1 << 2)
 #define RULE_MATCH_USERID                   (0x1 << 3)
+#define RULE_MATCH_AUDIO_SESSION_ID         (0x1 << 4)
 #define RULE_EXCLUDE_ATTRIBUTE_USAGE  (RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_USAGE)
 #define RULE_EXCLUDE_ATTRIBUTE_CAPTURE_PRESET \
                                       (RULE_EXCLUSION_MASK|RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET)
 #define RULE_EXCLUDE_UID              (RULE_EXCLUSION_MASK|RULE_MATCH_UID)
 #define RULE_EXCLUDE_USERID           (RULE_EXCLUSION_MASK|RULE_MATCH_USERID)
+#define RULE_EXCLUDE_AUDIO_SESSION_ID       (RULE_EXCLUSION_MASK|RULE_MATCH_AUDIO_SESSION_ID)
 
 #define MIX_TYPE_INVALID (-1)
 #define MIX_TYPE_PLAYERS 0
@@ -78,6 +80,7 @@
         audio_source_t  mSource;
         uid_t           mUid;
         int        mUserId;
+        audio_session_t  mAudioSessionId;
     } mValue;
     uint32_t        mRule;
 };
diff --git a/media/libaudioclient/tests/audioclient_serialization_tests.cpp b/media/libaudioclient/tests/audioclient_serialization_tests.cpp
index 07e53f8..d1e3d16 100644
--- a/media/libaudioclient/tests/audioclient_serialization_tests.cpp
+++ b/media/libaudioclient/tests/audioclient_serialization_tests.cpp
@@ -66,16 +66,16 @@
                  decltype(audio_stream_type_from_string)>(xsdc_enum_range<xsd::AudioStreamType>{},
                                                           audio_stream_type_from_string);
 
-static const std::vector<uint32_t> kMixMatchRules = {
-        RULE_MATCH_ATTRIBUTE_USAGE,
-        RULE_EXCLUDE_ATTRIBUTE_USAGE,
-        RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET,
-        RULE_EXCLUDE_ATTRIBUTE_CAPTURE_PRESET,
-        RULE_MATCH_UID,
-        RULE_EXCLUDE_UID,
-        RULE_MATCH_USERID,
-        RULE_EXCLUDE_USERID,
-};
+static const std::vector<uint32_t> kMixMatchRules = {RULE_MATCH_ATTRIBUTE_USAGE,
+                                                     RULE_EXCLUDE_ATTRIBUTE_USAGE,
+                                                     RULE_MATCH_ATTRIBUTE_CAPTURE_PRESET,
+                                                     RULE_EXCLUDE_ATTRIBUTE_CAPTURE_PRESET,
+                                                     RULE_MATCH_UID,
+                                                     RULE_EXCLUDE_UID,
+                                                     RULE_MATCH_USERID,
+                                                     RULE_EXCLUDE_USERID,
+                                                     RULE_MATCH_AUDIO_SESSION_ID,
+                                                     RULE_EXCLUDE_AUDIO_SESSION_ID};
 
 // Generates a random string.
 std::string CreateRandomString(size_t n) {