MediaSourcePlayer implements IsTypeSupported().

media/base/android/media_source_player.cc

Index: media/base/android/media_source_player.cc
diff --git a/media/base/android/media_source_player.cc b/media/base/android/media_source_player.cc
index 9fca4cf2e152b8e97d6bfb6f7cdec617d767376e..71665fac64a3ba476e11dfa2c247abfaf6d3158c 100644
--- a/media/base/android/media_source_player.cc
+++ b/media/base/android/media_source_player.cc
@@ -24,6 +24,23 @@ const int kBytesPerAudioOutputSample = 2;
 
 namespace media {
 
+// static
+bool MediaSourcePlayer::CanPlayType(const std::vector<uint8>& scheme_uuid,
+                                    const std::string& security_level,
+                                    const std::string& container,
+                                    const std::vector<std::string>& codecs) {
+  if (!MediaDrmBridge::IsCryptoSchemeSupported(scheme_uuid, container))
+    return false;
+
+  bool secure = MediaDrmBridge::IsSecureDecoderRequired(security_level);

[ddorwin, 2013/08/27 18:14:19]

nit: is_secure

Really, is_secure_required, but that's long and would cause two more lines of
code.

[xhwang, 2013/08/28 01:21:24]

I debated about that. |is_secure| isn't accurate either.
|is_secure_decoder_required| will be too long...

[ddorwin, 2013/08/28 02:28:50]

Yes, but bools should generally have an is_ (or similar) prefix. How about
use_secure?

[xhwang, 2013/08/28 18:19:15]

Changed to is_secure, which is short and fits well in HasDecoder(mime,
is_secure).

+  for (size_t i = 0; i < codecs.size(); ++i) {
+    if (!MediaCodecBridge::CanPlayType(codecs[i].c_str(), secure))

[qinmin, 2013/08/27 21:41:12]

how about putting the for loop inside MediaCodecBridge and pass a vector to
MediaDrmBridge::CanPlayType()

[xhwang, 2013/08/28 01:21:24]

This function is already complicated (involves MediaDrm and MediaCodec) so I
like to keep all complicated things here. This way, I can make MediaCodec
relatively simple. What do you think?

+      return false;
+  }
+
+  return true;
+}
+
 MediaSourcePlayer::MediaSourcePlayer(
     int player_id,
     MediaPlayerManager* manager)