Upstream version 5.34.104.0

[platform/framework/web/crosswalk.git] / src / content / browser / renderer_host / media / midi_host.h

diff --git a/src/content/browser/renderer_host/media/midi_host.h b/src/content/browser/renderer_host/media/midi_host.h
index e3b9df1..d7229f5 100644 (file)
--- a/src/content/browser/renderer_host/media/midi_host.h
+++ b/src/content/browser/renderer_host/media/midi_host.h
@@ -7,38 +7,40 @@
 
 #include <vector>
 
+#include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "media/midi/midi_manager.h"
 
 namespace media {
-class MIDIManager;
+class MidiManager;
+class MidiMessageQueue;
 }
 
 namespace content {
 
-class CONTENT_EXPORT MIDIHost
+class CONTENT_EXPORT MidiHost
     : public BrowserMessageFilter,
-      public media::MIDIManagerClient {
+      public media::MidiManagerClient {
  public:
   // Called from UI thread from the owner of this object.
-  MIDIHost(int renderer_process_id, media::MIDIManager* midi_manager);
+  MidiHost(int renderer_process_id, media::MidiManager* midi_manager);
 
   // BrowserMessageFilter implementation.
   virtual void OnDestruct() const OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok) OVERRIDE;
 
-  // MIDIManagerClient implementation.
-  virtual void ReceiveMIDIData(
-      uint32 port,
-      const uint8* data,
-      size_t length,
-      double timestamp) OVERRIDE;
-  virtual void AccumulateMIDIBytesSent(size_t n) OVERRIDE;
+  // MidiManagerClient implementation.
+  virtual void ReceiveMidiData(uint32 port,
+                               const uint8* data,
+                               size_t length,
+                               double timestamp) OVERRIDE;
+  virtual void AccumulateMidiBytesSent(size_t n) OVERRIDE;
 
   // Start session to access MIDI hardware.
   void OnStartSession(int client_id);
@@ -49,19 +51,34 @@ class CONTENT_EXPORT MIDIHost
                   double timestamp);
 
  private:
-  friend class base::DeleteHelper<MIDIHost>;
+  FRIEND_TEST_ALL_PREFIXES(MidiHostTest, IsValidWebMIDIData);
+  friend class base::DeleteHelper<MidiHost>;
   friend class BrowserThread;
 
-  virtual ~MIDIHost();
+  virtual ~MidiHost();
+
+  // Returns true if |data| fulfills the requirements of MidiOutput.send API
+  // defined in the WebMIDI spec.
+  // - |data| must be any number of complete MIDI messages (data abbreviation
+  //    called "running status" is disallowed).
+  // - 1-byte MIDI realtime messages can be placed at any position of |data|.
+  static bool IsValidWebMIDIData(const std::vector<uint8>& data);
 
   int renderer_process_id_;
 
+  // Represents if the renderer has a permission to send/receive MIDI SysEX
+  // messages.
+  bool has_sys_ex_permission_;
+
   // |midi_manager_| talks to the platform-specific MIDI APIs.
   // It can be NULL if the platform (or our current implementation)
   // does not support MIDI.  If not supported then a call to
   // OnRequestAccess() will always refuse access and a call to
   // OnSendData() will do nothing.
-  media::MIDIManager* const midi_manager_;
+  media::MidiManager* const midi_manager_;
+
+  // Buffers where data sent from each MIDI input port is stored.
+  ScopedVector<media::MidiMessageQueue> received_messages_queues_;
 
   // The number of bytes sent to the platform-specific MIDI sending
   // system, but not yet completed.
@@ -74,7 +91,7 @@ class CONTENT_EXPORT MIDIHost
   // Protects access to |sent_bytes_in_flight_|.
   base::Lock in_flight_lock_;
 
-  DISALLOW_COPY_AND_ASSIGN(MIDIHost);
+  DISALLOW_COPY_AND_ASSIGN(MidiHost);
 };
 
 }  // namespace content