Define AudioBuffer and VideoFrame for mojo

media/base/sample_format.cc

Index: media/base/sample_format.cc
diff --git a/media/base/sample_format.cc b/media/base/sample_format.cc
index 464fc1b6f578e0f4187f40365d18f4ef8922a20b..c4bd19545cdd79d92a39fa05554b128f877678af 100644
--- a/media/base/sample_format.cc
+++ b/media/base/sample_format.cc
@@ -51,4 +51,16 @@ const char* SampleFormatToString(SampleFormat sample_format) {
   return "";
 }
 
+bool IsPlanar(SampleFormat sample_format) {

[DaleCurtis, 2015/11/24 21:40:08]

Might be worth making these both fully-qualified switch statements so when
formats are added in the future a compile time error will occur.

[jrummell, 2015/11/24 22:34:41]

Done.

+  return sample_format == kSampleFormatPlanarF32 ||
+         sample_format == kSampleFormatPlanarS16 ||
+         sample_format == kSampleFormatPlanarS32;
+}
+
+bool IsInterleaved(SampleFormat sample_format) {
+  return sample_format == kSampleFormatU8 ||
+         sample_format == kSampleFormatS16 ||
+         sample_format == kSampleFormatS32 || sample_format == kSampleFormatF32;
+}
+
 }  // namespace media