Add content encoding support to WebM demuxer.

BUG=none
TEST=passed media_unittests


Review URL: http://codereview.chromium.org/9084002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@123422 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 65 insertions, 0 deletions

diff --git a/media/webm/webm_content_encodings.h b/media/webm/webm_content_encodings.h
new file mode 100644
index 0000000..4a5f62f
--- /dev/null
+++ b/media/webm/webm_content_encodings.h
@@ -0,0 +1,65 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_WEBM_WEBM_CONTENT_ENCODINGS_H_
+#define MEDIA_WEBM_WEBM_CONTENT_ENCODINGS_H_
+
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "media/base/media_export.h"
+
+namespace media {
+
+struct MEDIA_EXPORT ContentEncoding : public base::RefCounted<ContentEncoding> {
+  // The following enum definitions are based on the ContentEncoding element
+  // specified in the Matroska spec.
+
+  static const int kOrderInvalid = -1;
+
+  enum Scope {
+    kScopeInvalid = 0,
+    kScopeAllFrameContents = 1,
+    kScopeTrackPrivateData = 2,
+    kScopeNextContentEncodingData = 4,
+    kScopeMax = 7,
+  };
+
+  enum Type {
+    kTypeInvalid = -1,
+    kTypeCompression = 0,
+    kTypeEncryption = 1,
+  };
+
+  enum EncryptionAlgo {
+    kEncAlgoInvalid = -1,
+    kEncAlgoNotEncrypted = 0,
+    kEncAlgoDes = 1,
+    kEncAlgo3des = 2,
+    kEncAlgoTwofish = 3,
+    kEncAlgoBlowfish = 4,
+    kEncAlgoAes = 5,
+  };
+
+  ContentEncoding();
+  virtual ~ContentEncoding();
+
+  int64 order_;
+  Scope scope_;
+  Type type_;
+  EncryptionAlgo encryption_algo_;
+  scoped_array<uint8> encryption_key_id_;
+  int encryption_key_id_size_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ContentEncoding);
+};
+
+typedef std::vector<scoped_refptr<ContentEncoding> > ContentEncodings;
+
+}  // namespace media
+
+#endif  // MEDIA_WEBM_WEBM_CONTENT_ENCODINGS_H_