Use String8/16 c_str [audio]

Bug: 295394788
Test: make checkbuild
Change-Id: Idd3610f6820093bd8710a401f87a136cc26279c5
Merged-In: Idd3610f6820093bd8710a401f87a136cc26279c5
diff --git a/media/libaudioclient/AudioRecord.cpp b/media/libaudioclient/AudioRecord.cpp
index 91b54a8..00c6d63 100644
--- a/media/libaudioclient/AudioRecord.cpp
+++ b/media/libaudioclient/AudioRecord.cpp
@@ -745,7 +745,7 @@
                         mInput, mLatency, mSelectedDeviceId, mRoutedDeviceId);
     result.appendFormat("  mic direction(%d) mic field dimension(%f)",
                         mSelectedMicDirection, mSelectedMicFieldDimension);
-    ::write(fd, result.string(), result.size());
+    ::write(fd, result.c_str(), result.size());
     return NO_ERROR;
 }
 
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index d58181c..377c242 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -86,7 +86,7 @@
 void AudioSystem::setAudioFlingerBinder(const sp<IBinder>& audioFlinger) {
     if (audioFlinger->getInterfaceDescriptor() != media::IAudioFlingerService::descriptor) {
         ALOGE("setAudioFlingerBinder: received a binder of type %s",
-              String8(audioFlinger->getInterfaceDescriptor()).string());
+              String8(audioFlinger->getInterfaceDescriptor()).c_str());
         return;
     }
     Mutex::Autolock _l(gLock);
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index 0fa814c..0fe7593 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -3005,7 +3005,7 @@
     param.addInt(String8(AudioParameter::keyPresentationId), presentationId);
     param.addInt(String8(AudioParameter::keyProgramId), programId);
     ALOGV("%s(%d): PresentationId/ProgramId[%s]",
-            __func__, mPortId, param.toString().string());
+            __func__, mPortId, param.toString().c_str());
 
     status_t status;
     mAudioTrack->setParameters(param.toString().c_str(), &status);
@@ -3494,7 +3494,7 @@
                         mLatency, mSelectedDeviceId, mRoutedDeviceId);
     result.appendFormat("  output(%d) AF latency (%u) AF frame count(%zu) AF SampleRate(%u)\n",
                         mOutput, mAfLatency, mAfFrameCount, mAfSampleRate);
-    ::write(fd, result.string(), result.size());
+    ::write(fd, result.c_str(), result.size());
     return NO_ERROR;
 }