Support HLS MPEG2 TS with SAMPLE-AES encryption.

media/test/data/README

Index: media/test/data/README
diff --git a/media/test/data/README b/media/test/data/README
index 6f272507d22a29b6f7634e708d9b4052839059b6..408cb08f9ac4f68b2268272b8e87b88dac5d8226 100644
--- a/media/test/data/README
+++ b/media/test/data/README
@@ -74,6 +74,11 @@ bear-640x360-v_frag-cenc-key_rotation.mp4 - A fragmented MP4 version of the vide
 bear-a_enc-a.webm - bear-320x240-audio-only.webm encrypted using key ID [1] and key [2].
 frame_size_change-av_enc-v.webm - third_party/WebKit/LayoutTests/media/resources/frame_size_change.webm encrypted using key ID [1] and key [2].
 
+bear-1280x720-hls-sample-aes.ts - This was produced in two stages. bear-1280x720.ts was run through an HLS segmenter tool, resulting in bear-1280x720-hls.ts. This remultiplexed

[ddorwin, 2016/03/23 22:29:27]

Do you have the actual command lines? We try to include these, though that is
unfortunately not the case above.

[dougsteed, 2016/03/31 19:09:50]

Done.

+                                  and eliminated some material not needed for HLS. The latter was run through the same tool again, this time applying SampleAES encryption. The key
+                                  and IV used are embedded in the initialization segment. (The key id is used as the actual key for the purpose of this test only, to eliminate the
+                                  need to mock key delivery). keyid=

[ddorwin, 2016/03/23 22:29:26]

We mock key delivery in existing EME tests. Is it that big of a burden? Using
the same key would be ideal.

[dougsteed, 2016/03/24 22:13:36]

Not sure what you are referring to there. Can you clarify? Note that I am
actually decrypting within the test, so as to verify that the subsample and
pattern parsing was done correctly. (That's why I have the clear and encrypted
versions of the same content). Are there existing tests that actually do
decryption to compare against clear text?

[ddorwin, 2016/03/24 22:44:52]

I commented in the test. I don't know that we test decryption directly (we
might), but we do have tests that convert a key ID to a key to provide to the
CDM. For example,
https://code.google.com/p/chromium/codesearch#chromium/src/media/test/pipelin...
emulates an EME app and provides the requested key.

If you use the same key ID and key, as we do for all other files, you'll have
the option to test these files there too.

[dougsteed, 2016/03/31 19:09:50]

Done.

[dougsteed, 2016/03/31 19:09:50]

Done.

+
 
 [1] 30313233343536373839303132333435
 [2] ebdd62f16814d27b68ef122afce4ae3c