Use audio_bytes_per_frame now supporting compressed formats

Change-Id: Id3153814070b61118949e4a7fd9590d76cd65be4
diff --git a/media/libnbaio/NBAIO.cpp b/media/libnbaio/NBAIO.cpp
index 1cb4410..3abc35e 100644
--- a/media/libnbaio/NBAIO.cpp
+++ b/media/libnbaio/NBAIO.cpp
@@ -55,8 +55,7 @@
     ret.mSampleRate = sampleRate;
     ret.mChannelCount = channelCount;
     ret.mFormat = format;
-    ret.mFrameSize = audio_is_linear_pcm(format) ?
-            channelCount * audio_bytes_per_sample(format) : sizeof(uint8_t);
+    ret.mFrameSize = audio_bytes_per_frame(channelCount, format);
     return ret;
 }