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1 // Copyright (c) 2012 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/gpu/stream_texture_host_android.h"
6 
7 #include "content/common/gpu/client/gpu_channel_host.h"
8 #include "content/common/gpu/gpu_messages.h"
9 #include "content/renderer/render_thread_impl.h"
10 #include "ipc/ipc_message_macros.h"
11 
12 namespace content {
13 
StreamTextureHost(GpuChannelHost * channel)14 StreamTextureHost::StreamTextureHost(GpuChannelHost* channel)
15     : stream_id_(0),
16       listener_(NULL),
17       channel_(channel),
18       weak_ptr_factory_(this) {
19   DCHECK(channel);
20 }
21 
~StreamTextureHost()22 StreamTextureHost::~StreamTextureHost() {
23   if (channel_.get() && stream_id_)
24     channel_->RemoveRoute(stream_id_);
25 }
26 
BindToCurrentThread(int32 stream_id,Listener * listener)27 bool StreamTextureHost::BindToCurrentThread(int32 stream_id,
28                                             Listener* listener) {
29   listener_ = listener;
30   if (channel_.get() && stream_id && !stream_id_) {
31     stream_id_ = stream_id;
32     channel_->AddRoute(stream_id, weak_ptr_factory_.GetWeakPtr());
33     channel_->Send(new GpuStreamTextureMsg_StartListening(stream_id));
34     return true;
35   }
36 
37   return false;
38 }
39 
OnMessageReceived(const IPC::Message & message)40 bool StreamTextureHost::OnMessageReceived(const IPC::Message& message) {
41   bool handled = true;
42   IPC_BEGIN_MESSAGE_MAP(StreamTextureHost, message)
43     IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_FrameAvailable,
44                         OnFrameAvailable);
45     IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_MatrixChanged,
46                         OnMatrixChanged);
47     IPC_MESSAGE_UNHANDLED(handled = false)
48   IPC_END_MESSAGE_MAP()
49   DCHECK(handled);
50   return handled;
51 }
52 
OnChannelError()53 void StreamTextureHost::OnChannelError() {
54 }
55 
OnFrameAvailable()56 void StreamTextureHost::OnFrameAvailable() {
57   if (listener_)
58     listener_->OnFrameAvailable();
59 }
60 
OnMatrixChanged(const GpuStreamTextureMsg_MatrixChanged_Params & params)61 void StreamTextureHost::OnMatrixChanged(
62     const GpuStreamTextureMsg_MatrixChanged_Params& params) {
63   COMPILE_ASSERT(sizeof(params) == sizeof(float) * 16,
64                  bad_GpuStreamTextureMsg_MatrixChanged_Params_format);
65   if (listener_)
66     listener_->OnMatrixChanged((const float*)&params);
67 }
68 
69 }  // namespace content
70