content/renderer/gpu/stream_texture_host_android.cc

   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
  14 StreamTextureHost::StreamTextureHost(GpuChannelHost* channel)
  15     : route_id_(MSG_ROUTING_NONE),
  16       stream_id_(0),
  17       listener_(NULL),
  18       channel_(channel),
  19       weak_ptr_factory_(this) {
  20   DCHECK(channel);
  21 }
  22
  23 StreamTextureHost::~StreamTextureHost() {
  24   if (channel_.get() && route_id_ != MSG_ROUTING_NONE)
  25     channel_->RemoveRoute(route_id_);
  26 }
  27
  28 bool StreamTextureHost::Initialize(int32 stream_id) {
  29   if (channel_.get() && stream_id) {
  30     if (channel_->Send(new GpuChannelMsg_RegisterStreamTextureProxy(
  31       stream_id, &route_id_))) {
  32       stream_id_ = stream_id;
  33       channel_->AddRoute(route_id_, weak_ptr_factory_.GetWeakPtr());
  34     }
  35     return true;
  36   }
  37
  38   return false;
  39 }
  40
  41 bool StreamTextureHost::OnMessageReceived(const IPC::Message& message) {
  42   bool handled = true;
  43   IPC_BEGIN_MESSAGE_MAP(StreamTextureHost, message)
  44     IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_FrameAvailable,
  45                         OnFrameAvailable);
  46     IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_MatrixChanged,
  47                         OnMatrixChanged);
  48     IPC_MESSAGE_UNHANDLED(handled = false)
  49   IPC_END_MESSAGE_MAP()
  50   DCHECK(handled);
  51   return handled;
  52 }
  53
  54 void StreamTextureHost::EstablishPeer(int32 primary_id, int32 secondary_id) {
  55   if (channel_.get()) {
  56     channel_->Send(new GpuChannelMsg_EstablishStreamTexture(
  57         stream_id_, primary_id, secondary_id));
  58   }
  59 }
  60 void StreamTextureHost::OnChannelError() {
  61 }
  62
  63 void StreamTextureHost::OnFrameAvailable() {
  64   if (listener_)
  65     listener_->OnFrameAvailable();
  66 }
  67
  68 void StreamTextureHost::OnMatrixChanged(
  69     const GpuStreamTextureMsg_MatrixChanged_Params& params) {
  70   COMPILE_ASSERT(sizeof(params) == sizeof(float) * 16,
  71                  bad_GpuStreamTextureMsg_MatrixChanged_Params_format);
  72   if (listener_)
  73     listener_->OnMatrixChanged((const float*)&params);
  74 }
  75
  76 }  // namespace content