AudioSystem::getSamplingRate and getFrameCount now work for input

Also fix whitespace and comment in AudioIoDescriptor.

Bug: 25641253
Bug: 21019153
Change-Id: I6a1e2262f44f87ec3ebce6e5274f45ed0f47eb13
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index e28f79d..0d9bc3b 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -97,14 +97,14 @@
                                 sp<IMemory>& buffers,   // return value 0 means it follows cblk
                                 status_t *status) = 0;
 
-    // FIXME Surprisingly, sampleRate/format/frameCount/latency don't work for input handles
+    // FIXME Surprisingly, format/latency don't work for input handles
 
     /* query the audio hardware state. This state never changes,
      * and therefore can be cached.
      */
-    virtual     uint32_t    sampleRate(audio_io_handle_t output) const = 0;
+    virtual     uint32_t    sampleRate(audio_io_handle_t ioHandle) const = 0;
     virtual     audio_format_t format(audio_io_handle_t output) const = 0;
-    virtual     size_t      frameCount(audio_io_handle_t output) const = 0;
+    virtual     size_t      frameCount(audio_io_handle_t ioHandle) const = 0;
 
     // return estimated latency in milliseconds
     virtual     uint32_t    latency(audio_io_handle_t output) const = 0;