Parsing of encoded duration for unencrypted opus streams.

media/formats/webm/opus_packet_builder.h

Index: media/formats/webm/opus_packet_builder.h
diff --git a/media/formats/webm/opus_packet_builder.h b/media/formats/webm/opus_packet_builder.h
new file mode 100644
index 0000000000000000000000000000000000000000..c406c309f2eec0cb7e46471037f1893dec034fe6
--- /dev/null
+++ b/media/formats/webm/opus_packet_builder.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2015 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_FORMATS_WEBM_OPUS_PACKET_BUILDER_H_
+#define MEDIA_FORMATS_WEBM_OPUS_PACKET_BUILDER_H_
+
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+
+namespace media {
+
+class OpusPacket {
+ public:
+  OpusPacket(int config, int frame_count, bool is_VBR);
+  ~OpusPacket();
+
+  const uint8_t* data() const;
+  int size() const;
+  double duration_ms() const;
+
+ private:
+  std::vector<uint8_t> data_;
+  double duration_ms_;
+};

[wolenetz, 2015/02/05 23:05:00]

DISALLOW_COPY_AND_ASSIGN(OpusPacket); in private: section of class.

[chcunningham, 2015/02/06 03:20:09]

Done.

+
+// Builds an exhaustive collection of Opus packet configurations.
+ScopedVector<OpusPacket> BuildAllOpusPackets();
+
+}  // namespace media
+
+#endif  // MEDIA_FORMATS_WEBM_OPUS_PACKET_BUILDER_H_