Implement USB Audio across Nexus Devices

Fix issues with connecting non-audio USB devices.

https://b.corp.google.com/issue?id=13745966
https://b.corp.google.com/issue?id=8281454
https://b.corp.google.com/issue?id=13751080
https://b.corp.google.com/issue?id=4643412

Change-Id: I1186f69a6c5f50279a1225a77fb5d4f7a8eda3cb

1 files changed, 35 insertions, 0 deletions

diff --git a/core/java/android/alsa/AlsaDevicesParser.java b/core/java/android/alsa/AlsaDevicesParser.java
index 3835942..094c8a2 100644
--- a/core/java/android/alsa/AlsaDevicesParser.java
+++ b/core/java/android/alsa/AlsaDevicesParser.java
@@ -205,14 +205,49 @@ public class AlsaDevicesParser {
         return mHasPlaybackDevices;
     }
 
+    public boolean hasPlaybackDevices(int card) {
+        for (int index = 0; index < deviceRecords_.size(); index++) {
+            AlsaDeviceRecord deviceRecord = deviceRecords_.get(index);
+            if (deviceRecord.mCardNum == card &&
+                deviceRecord.mDeviceType == AlsaDeviceRecord.kDeviceType_Audio &&
+                deviceRecord.mDeviceDir == AlsaDeviceRecord.kDeviceDir_Playback) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public boolean hasCaptureDevices() {
         return mHasCaptureDevices;
     }
 
+    public boolean hasCaptureDevices(int card) {
+        for (int index = 0; index < deviceRecords_.size(); index++) {
+            AlsaDeviceRecord deviceRecord = deviceRecords_.get(index);
+            if (deviceRecord.mCardNum == card &&
+                deviceRecord.mDeviceType == AlsaDeviceRecord.kDeviceType_Audio &&
+                deviceRecord.mDeviceDir == AlsaDeviceRecord.kDeviceDir_Capture) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public boolean hasMIDIDevices() {
         return mHasMIDIDevices;
     }
 
+    public boolean hasMIDIDevices(int card) {
+        for (int index = 0; index < deviceRecords_.size(); index++) {
+            AlsaDeviceRecord deviceRecord = deviceRecords_.get(index);
+            if (deviceRecord.mCardNum == card &&
+                deviceRecord.mDeviceType == AlsaDeviceRecord.kDeviceType_MIDI) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public void scan() {
         deviceRecords_.clear();