add dump() method to AudioRecord

Add a dump() method to AudioRecord.
Can be used by dumpsys or tests.

Test: run test_create_audiorecord
Change-Id: I4b3133601eeff4d5447ca2c5b13a01ff3451b6c7

media/libaudioclient/AudioRecord.cpp

@@ -530,6 +530,27 @@ audio_port_handle_t AudioRecord::getRoutedDeviceId() {
     return mRoutedDeviceId;
 }
 
+status_t AudioRecord::dump(int fd, const Vector<String16>& args __unused) const
+{
+    String8 result;
+
+    result.append(" AudioRecord::dump\n");
+    result.appendFormat("  status(%d), active(%d), session Id(%d)\n",
+                        mStatus, mActive, mSessionId);
+    result.appendFormat("  flags(%#x), req. flags(%#x), audio source(%d)\n",
+                        mFlags, mOrigFlags, mAttributes.source);
+    result.appendFormat("  format(%#x), channel mask(%#x), channel count(%u), sample rate(%u)\n",
+                  mFormat, mChannelMask, mChannelCount, mSampleRate);
+    result.appendFormat("  frame count(%zu), req. frame count(%zu)\n",
+                  mFrameCount, mReqFrameCount);
+    result.appendFormat("  notif. frame count(%u), req. notif. frame count(%u)\n",
+             mNotificationFramesAct, mNotificationFramesReq);
+    result.appendFormat("  input(%d), latency(%u), selected device Id(%d), routed device Id(%d)\n",
+                        mInput, mLatency, mSelectedDeviceId, mRoutedDeviceId);
+    ::write(fd, result.string(), result.size());
+    return NO_ERROR;
+}
+
 // -------------------------------------------------------------------------
 // TODO Move this macro to a common header file for enum to string conversion in audio framework.
 #define MEDIA_CASE_ENUM(name) case name: return #name

media/libaudioclient/include/media/AudioRecord.h

@@ -521,6 +521,11 @@ public:
     /* Get the flags */
             audio_input_flags_t getFlags() const { AutoMutex _l(mLock); return mFlags; }
 
+    /*
+     * Dumps the state of an audio record.
+     */
+            status_t    dump(int fd, const Vector<String16>& args) const;
+
 private:
     /* copying audio record objects is not allowed */
                         AudioRecord(const AudioRecord& other);