Web MIDI: make naming convention be consistent

content/browser/renderer_host/media/midi_host.cc

 // Copyright (c) 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.
 
 #include "content/browser/renderer_host/media/midi_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/debug/trace_event.h"
 #include "base/process/process.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/media/media_internals.h"
 #include "content/common/media/midi_messages.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/media_observer.h"
 #include "content/public/browser/user_metrics.h"
 #include "media/midi/midi_manager.h"
 #include "media/midi/midi_message_queue.h"
 #include "media/midi/midi_message_util.h"
 
-using media::MIDIManager;
-using media::MIDIPortInfoList;
+using media::MidiManager;
+using media::MidiPortInfoList;
 
 namespace content {
 namespace {
 
 // The total number of bytes which we're allowed to send to the OS
 // before knowing that they have been successfully sent.
 const size_t kMaxInFlightBytes = 10 * 1024 * 1024;  // 10 MB.
 
 // We keep track of the number of bytes successfully sent to
 // the hardware.  Every once in a while we report back to the renderer
 // the number of bytes sent since the last report. This threshold determines
 // how many bytes will be sent before reporting back to the renderer.
 const size_t kAcknowledgementThresholdBytes = 1024 * 1024;  // 1 MB.
 
 bool IsDataByte(uint8 data) {
   return (data & 0x80) == 0;
 }
 
 bool IsSystemRealTimeMessage(uint8 data) {
   return 0xf8 <= data && data <= 0xff;
 }
 
 }  // namespace
 
 using media::kSysExByte;
 using media::kEndOfSysExByte;
 
-MIDIHost::MIDIHost(int renderer_process_id, media::MIDIManager* midi_manager)
+MidiHost::MidiHost(int renderer_process_id, media::MidiManager* midi_manager)
     : renderer_process_id_(renderer_process_id),
       has_sys_ex_permission_(false),
       midi_manager_(midi_manager),
       sent_bytes_in_flight_(0),
       bytes_sent_since_last_acknowledgement_(0) {
 }
 
-MIDIHost::~MIDIHost() {
+MidiHost::~MidiHost() {
   if (midi_manager_)
     midi_manager_->EndSession(this);
 }
 
-void MIDIHost::OnDestruct() const {
+void MidiHost::OnDestruct() const {
   BrowserThread::DeleteOnIOThread::Destruct(this);
 }
 
-///////////////////////////////////////////////////////////////////////////////
 // IPC Messages handler
-bool MIDIHost::OnMessageReceived(const IPC::Message& message,
+bool MidiHost::OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(MIDIHost, message, *message_was_ok)
-    IPC_MESSAGE_HANDLER(MIDIHostMsg_StartSession, OnStartSession)
-    IPC_MESSAGE_HANDLER(MIDIHostMsg_SendData, OnSendData)
+  IPC_BEGIN_MESSAGE_MAP_EX(MidiHost, message, *message_was_ok)
+    IPC_MESSAGE_HANDLER(MidiHostMsg_StartSession, OnStartSession)
+    IPC_MESSAGE_HANDLER(MidiHostMsg_SendData, OnSendData)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP_EX()
 
   return handled;
 }
 
-void MIDIHost::OnStartSession(int client_id) {
-  MIDIPortInfoList input_ports;
-  MIDIPortInfoList output_ports;
+void MidiHost::OnStartSession(int client_id) {
+  MidiPortInfoList input_ports;
+  MidiPortInfoList output_ports;
 
   // Initialize devices and register to receive MIDI data.
   bool success = false;
   if (midi_manager_) {
     success = midi_manager_->StartSession(this);
     if (success) {
       input_ports = midi_manager_->input_ports();
       output_ports = midi_manager_->output_ports();
       received_messages_queues_.clear();
       received_messages_queues_.resize(input_ports.size());
       // ChildSecurityPolicy is set just before OnStartSession by
-      // MIDIDispatcherHost. So we can safely cache the policy.
+      // MidiDispatcherHost. So we can safely cache the policy.
       has_sys_ex_permission_ = ChildProcessSecurityPolicyImpl::GetInstance()->
-          CanSendMIDISysExMessage(renderer_process_id_);
+          CanSendMidiSysExMessage(renderer_process_id_);
     }
   }
 
-  Send(new MIDIMsg_SessionStarted(
+  Send(new MidiMsg_SessionStarted(
        client_id,
        success,
        input_ports,
        output_ports));
 }
 
-void MIDIHost::OnSendData(uint32 port,
+void MidiHost::OnSendData(uint32 port,
                           const std::vector<uint8>& data,
                           double timestamp) {
   if (!midi_manager_)
     return;
 
   if (data.empty())
     return;
 
   // Blink running in a renderer checks permission to raise a SecurityError
   // in JavaScript. The actual permission check for security purposes
   // happens here in the browser process.
   if (!has_sys_ex_permission_ &&
       std::find(data.begin(), data.end(), kSysExByte) != data.end()) {
     RecordAction(base::UserMetricsAction("BadMessageTerminate_MIDI"));
     BadMessageReceived();
     return;
   }
 
   if (!IsValidWebMIDIData(data))
     return;
 
   base::AutoLock auto_lock(in_flight_lock_);
   // Sanity check that we won't send too much data.
   // TODO(yukawa): Consider to send an error event back to the renderer
   // after some future discussion in W3C.
   if (data.size() + sent_bytes_in_flight_ > kMaxInFlightBytes)
     return;
-  midi_manager_->DispatchSendMIDIData(this, port, data, timestamp);
+  midi_manager_->DispatchSendMidiData(this, port, data, timestamp);
   sent_bytes_in_flight_ += data.size();
 }
 
-void MIDIHost::ReceiveMIDIData(
+void MidiHost::ReceiveMidiData(
     uint32 port,
     const uint8* data,
     size_t length,
     double timestamp) {
-  TRACE_EVENT0("midi", "MIDIHost::ReceiveMIDIData");
+  TRACE_EVENT0("midi", "MidiHost::ReceiveMidiData");
 
   if (received_messages_queues_.size() <= port)
     return;
 
   // Lazy initialization
   if (received_messages_queues_[port] == NULL)
-    received_messages_queues_[port] = new media::MIDIMessageQueue(true);
+    received_messages_queues_[port] = new media::MidiMessageQueue(true);
 
   received_messages_queues_[port]->Add(data, length);
   std::vector<uint8> message;
   while (true) {
     received_messages_queues_[port]->Get(&message);
     if (message.empty())
       break;
 
     // MIDI devices may send a system exclusive messages even if the renderer
     // doesn't have a permission to receive it. Don't kill the renderer as
     // OnSendData() does.
     if (message[0] == kSysExByte && !has_sys_ex_permission_)
       continue;
 
     // Send to the renderer.
-    Send(new MIDIMsg_DataReceived(port, message, timestamp));
+    Send(new MidiMsg_DataReceived(port, message, timestamp));
   }
 }
 
-void MIDIHost::AccumulateMIDIBytesSent(size_t n) {
+void MidiHost::AccumulateMidiBytesSent(size_t n) {
   {
     base::AutoLock auto_lock(in_flight_lock_);
     if (n <= sent_bytes_in_flight_)
       sent_bytes_in_flight_ -= n;
   }
 
   if (bytes_sent_since_last_acknowledgement_ + n >=
       bytes_sent_since_last_acknowledgement_)
     bytes_sent_since_last_acknowledgement_ += n;
 
   if (bytes_sent_since_last_acknowledgement_ >=
       kAcknowledgementThresholdBytes) {
-    Send(new MIDIMsg_AcknowledgeSentData(
+    Send(new MidiMsg_AcknowledgeSentData(
         bytes_sent_since_last_acknowledgement_));
     bytes_sent_since_last_acknowledgement_ = 0;
   }
 }
 
 // static
-bool MIDIHost::IsValidWebMIDIData(const std::vector<uint8>& data) {
+bool MidiHost::IsValidWebMIDIData(const std::vector<uint8>& data) {
   bool in_sysex = false;
   size_t waiting_data_length = 0;
   for (size_t i = 0; i < data.size(); ++i) {
     const uint8 current = data[i];
     if (IsSystemRealTimeMessage(current))
       continue;  // Real time message can be placed at any point.
     if (waiting_data_length > 0) {
       if (!IsDataByte(current))
         return false;  // Error: |current| should have been data byte.
       --waiting_data_length;
       continue;  // Found data byte as expected.
     }
     if (in_sysex) {
       if (data[i] == kEndOfSysExByte)
         in_sysex = false;
       else if (!IsDataByte(current))
         return false;  // Error: |current| should have been data byte.
       continue;  // Found data byte as expected.
     }
     if (current == kSysExByte) {
       in_sysex = true;
       continue;  // Found SysEX
     }
-    waiting_data_length = media::GetMIDIMessageLength(current);
+    waiting_data_length = media::GetMidiMessageLength(current);
     if (waiting_data_length == 0)
       return false;  // Error: |current| should have been a valid status byte.
     --waiting_data_length;  // Found status byte
   }
   return waiting_data_length == 0 && !in_sysex;
 }
 
 }  // namespace content