// Copyright (c) 2012 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/renderer/gpu/stream_texture_host_android.h"

#include "content/common/gpu/client/gpu_channel_host.h"
#include "content/common/gpu/gpu_messages.h"
#include "content/renderer/render_thread_impl.h"
#include "ipc/ipc_message_macros.h"

namespace content {

StreamTextureHost::StreamTextureHost(GpuChannelHost* channel)
    : route_id_(MSG_ROUTING_NONE),
      stream_id_(0),
      listener_(NULL),
      channel_(channel),
      ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
  DCHECK(channel);
}

StreamTextureHost::~StreamTextureHost() {
  if (channel_.get() && route_id_ != MSG_ROUTING_NONE)
    channel_->RemoveRoute(route_id_);
}

bool StreamTextureHost::Initialize(
    int stream_id, const gfx::Size& initial_size) {
  if (channel_.get() && stream_id) {
    if (channel_->Send(new GpuChannelMsg_RegisterStreamTextureProxy(
      stream_id, initial_size, &route_id_))) {
      stream_id_ = stream_id;
      channel_->AddRoute(route_id_, weak_ptr_factory_.GetWeakPtr());
    }
    return true;
  }

  return false;
}

bool StreamTextureHost::OnMessageReceived(const IPC::Message& message) {
  bool handled = true;
  IPC_BEGIN_MESSAGE_MAP(StreamTextureHost, message)
    IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_FrameAvailable,
                        OnFrameAvailable);
    IPC_MESSAGE_HANDLER(GpuStreamTextureMsg_MatrixChanged,
                        OnMatrixChanged);
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()
  DCHECK(handled);
  return handled;
}

void StreamTextureHost::EstablishPeer(int32 primary_id, int32 secondary_id) {
  if (channel_.get()) {
    channel_->Send(new GpuChannelMsg_EstablishStreamTexture(
        stream_id_, primary_id, secondary_id));
  }
}
void StreamTextureHost::OnChannelError() {
}

void StreamTextureHost::OnFrameAvailable() {
  if (listener_)
    listener_->OnFrameAvailable();
}

void StreamTextureHost::OnMatrixChanged(
    const GpuStreamTextureMsg_MatrixChanged_Params& params) {
  COMPILE_ASSERT(sizeof(params) == sizeof(float) * 16,
                 bad_GpuStreamTextureMsg_MatrixChanged_Params_format);
  if (listener_)
    listener_->OnMatrixChanged((const float*)&params);
}

}  // namespace content