Revert 237558 "Use MIDIMessageQueue/IsValidWebMIDIData for MIDI ..."

trunk/src/media/midi/midi_message_queue.h

Index: trunk/src/media/midi/midi_message_queue.h
===================================================================
--- trunk/src/media/midi/midi_message_queue.h	(revision 237659)
+++ trunk/src/media/midi/midi_message_queue.h	(working copy)
@@ -1,72 +0,0 @@
-// Copyright 2013 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_MIDI_MIDI_MESSAGE_QUEUE_H_
-#define MEDIA_MIDI_MIDI_MESSAGE_QUEUE_H_
-
-#include <deque>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "media/base/media_export.h"
-
-namespace media {
-
-// A simple message splitter for possibly unsafe/corrupted MIDI data stream.
-// This class allows you to:
-// - maintain fragmented MIDI message.
-// - skip any invalid data sequence.
-// - reorder MIDI messages so that "System Real Time Message", which can be
-//   inserted at any point of the byte stream, is placed at the boundary of
-//   complete MIDI messages.
-// - (Optional) reconstruct complete MIDI messages from data stream where
-//   MIDI status byte is abbreviated (a.k.a. "running status").
-//
-// Example (pseudo message loop):
-//   MIDIMessageQueue queue(true);  // true to support "running status"
-//   while (true) {
-//     if (is_incoming_midi_data_available()) {
-//       std::vector<uint8> incoming_data;
-//       read_incoming_midi_data(&incoming_data)
-//       queue.Add(incoming_data);
-//     }
-//     while (true) {
-//       std::vector<uint8> next_message;
-//       queue.Get(&next_message);
-//       if (!next_message.empty())
-//         dispatch(next_message);
-//     }
-//   }
-class MEDIA_EXPORT MIDIMessageQueue {
- public:
-  // Initializes the queue. Set true to |allow_running_status| to enable
-  // "MIDI running status" reconstruction.
-  explicit MIDIMessageQueue(bool allow_running_status);
-  ~MIDIMessageQueue();
-
-  // Enqueues |data| to the internal buffer.
-  void Add(const std::vector<uint8>& data);
-  void Add(const uint8* data, size_t length);
-
-  // Fills the next complete MIDI message into |message|. If |message| is
-  // not empty, the data sequence falls into one of the following types of
-  // MIDI message.
-  // - Single "Channel Voice Message"    (w/o "System Real Time Messages")
-  // - Single "Channel Mode Message"     (w/o "System Real Time Messages")
-  // - Single "System Exclusive Message" (w/o "System Real Time Messages")
-  // - Single "System Common Message"    (w/o "System Real Time Messages")
-  // - Single "System Real Time message"
-  // |message| is empty if there is no complete MIDI message any more.
-  void Get(std::vector<uint8>* message);
-
- private:
-  std::deque<uint8> queue_;
-  std::vector<uint8> next_message_;
-  const bool allow_running_status_;
-  DISALLOW_COPY_AND_ASSIGN(MIDIMessageQueue);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_MIDI_MIDI_MESSAGE_QUEUE_H_