OLD | NEW |
---|---|
(Empty) | |
1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "content/renderer/media/midi_message_filter.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "base/debug/trace_event.h" | |
9 #include "base/message_loop_proxy.h" | |
10 #include "content/common/media/midi_messages.h" | |
11 #include "content/renderer/render_thread_impl.h" | |
12 #include "ipc/ipc_logging.h" | |
13 | |
14 namespace content { | |
15 | |
16 MIDIMessageFilter* MIDIMessageFilter::g_filter = NULL; | |
17 | |
18 MIDIMessageFilter::MIDIMessageFilter( | |
19 const scoped_refptr<base::MessageLoopProxy>& io_message_loop) | |
20 : channel_(NULL), | |
21 io_message_loop_(io_message_loop), | |
22 client_(NULL), | |
23 message_loop_(NULL) { | |
24 DCHECK(!g_filter); | |
25 g_filter = this; | |
26 } | |
27 | |
28 MIDIMessageFilter::~MIDIMessageFilter() { | |
29 DCHECK_EQ(g_filter, this); | |
30 g_filter = NULL; | |
31 } | |
32 | |
33 // static | |
34 MIDIMessageFilter* MIDIMessageFilter::Get() { | |
35 return g_filter; | |
scherkus (not reviewing)
2013/06/03 22:44:59
AFAIK you can replace this global and RendererWebM
| |
36 } | |
37 | |
38 void MIDIMessageFilter::Send(IPC::Message* message) { | |
39 DCHECK(io_message_loop_->BelongsToCurrentThread()); | |
40 if (!channel_) { | |
41 delete message; | |
42 } else { | |
43 channel_->Send(message); | |
44 } | |
45 } | |
46 | |
47 bool MIDIMessageFilter::OnMessageReceived(const IPC::Message& message) { | |
48 DCHECK(io_message_loop_->BelongsToCurrentThread()); | |
49 bool handled = true; | |
50 IPC_BEGIN_MESSAGE_MAP(MIDIMessageFilter, message) | |
51 IPC_MESSAGE_HANDLER(MIDIMsg_AccessApproved, OnAccessApproved) | |
52 IPC_MESSAGE_HANDLER(MIDIMsg_DataReceived, OnDataReceived) | |
53 IPC_MESSAGE_UNHANDLED(handled = false) | |
54 IPC_END_MESSAGE_MAP() | |
55 return handled; | |
56 } | |
57 | |
58 void MIDIMessageFilter::OnFilterAdded(IPC::Channel* channel) { | |
59 DCHECK(io_message_loop_->BelongsToCurrentThread()); | |
60 channel_ = channel; | |
61 } | |
62 | |
63 void MIDIMessageFilter::OnFilterRemoved() { | |
64 DCHECK(io_message_loop_->BelongsToCurrentThread()); | |
65 | |
66 // Once removed, a filter will not be used again. At this time all | |
67 // delegates must be notified so they release their reference. | |
68 OnChannelClosing(); | |
69 } | |
70 | |
71 void MIDIMessageFilter::OnChannelClosing() { | |
72 DCHECK(io_message_loop_->BelongsToCurrentThread()); | |
73 channel_ = NULL; | |
74 } | |
75 | |
76 // Received from browser. | |
77 | |
78 void MIDIMessageFilter::OnAccessApproved(int access, bool success) { | |
79 } | |
80 | |
81 void MIDIMessageFilter::OnDataReceived(int port, | |
82 const std::vector<uint8>& data, | |
83 double timestamp) { | |
84 TRACE_EVENT0("midi", "MIDIMessageFilter::OnDataReceived"); | |
85 | |
86 #if 1 | |
87 if (message_loop_) { | |
88 message_loop_->PostTask(FROM_HERE, | |
89 base::Bind(&MIDIMessageFilter::HandleDataReceived, this, | |
90 port, data, timestamp | |
91 )); | |
92 } | |
93 #else | |
94 HandleDataReceived(port, data, timestamp); | |
95 #endif | |
96 } | |
97 | |
98 void MIDIMessageFilter::HandleDataReceived(int port, | |
99 const std::vector<uint8>& data, | |
100 double timestamp) { | |
101 TRACE_EVENT0("midi", "MIDIMessageFilter::HandleDataReceived"); | |
102 size_t n = data.size(); | |
103 // printf("MIDIMessageFilter::OnDataReceived(%d %f): ", (int)n, timestamp); | |
104 // for (size_t i = 0; i < n; ++i) { | |
105 // printf("%2x ", data[i]); | |
106 // } | |
107 // printf("\n"); | |
108 | |
109 if (client_ && message_loop_) | |
110 client_->receiveMIDIData(port, data.data(), n, timestamp); | |
111 } | |
112 | |
113 void MIDIMessageFilter::AddClient(WebKit::WebMIDIAccessor::Client* client) { | |
114 client_ = client; | |
115 message_loop_ = base::MessageLoop::current(); | |
116 } | |
117 | |
118 void MIDIMessageFilter::RemoveClient(WebKit::WebMIDIAccessor::Client* client) { | |
119 if (client == client_) | |
120 client_ = NULL; //????????????????? multiple clients?? | |
scherkus (not reviewing)
2013/06/03 22:44:59
I didn't see anything in the spec that mentioned m
| |
121 } | |
122 | |
123 } // namespace content | |
OLD | NEW |