media: gpu process ipc video decoder implementation

chrome/gpu/gpu_video_service.cc

+// Copyright (c) 2010 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 "chrome/common/gpu_messages.h"
+#include "chrome/gpu/gpu_channel.h"
+#include "chrome/gpu/gpu_video_service.h"
+
+GpuVideoService::GpuVideoService() : next_available_decoder_id_(0) {
+  // TODO(jiesun): move this time consuming stuff out of here.
+  IntializeGpuVideoService();
+}
+GpuVideoService::~GpuVideoService() {
+  // TODO(jiesun): move this time consuming stuff out of here.
+  UnintializeGpuVideoService();
+}
+
+void GpuVideoService::OnChannelConnected(int32 peer_pid) {
+  LOG(ERROR) << "GpuVideoService::OnChannelConnected";
+}
+
+void GpuVideoService::OnChannelError() {
+  LOG(ERROR) << "GpuVideoService::OnChannelError";
+}
+
+void GpuVideoService::OnMessageReceived(const IPC::Message& msg) {
+#if 0
+  IPC_BEGIN_MESSAGE_MAP(GpuVideoService, msg)
+    IPC_MESSAGE_UNHANDLED_ERROR()
+  IPC_END_MESSAGE_MAP()
+#endif
+}
+
+bool GpuVideoService::IntializeGpuVideoService() {
+  return true;
+}
+
+bool GpuVideoService::UnintializeGpuVideoService() {
+  return true;
+}
+
+bool GpuVideoService::CreateVideoDecoder(
+    GpuChannel* channel,
+    MessageRouter* router,
+    GpuVideoDecoderInfoParam* param) {
+  // TODO(jiesun): find a better way to determine which GpuVideoDecoder
+  // to return on current platform.
+#if defined(ENABLE_MFT_DECODER)
+  GpuVideoDecoderInfo decoder_info;
+  int32 decoder_id = GetNextAvailableDecoderID();
+  param->decoder_id_ = decoder_id;
+  base::ProcessHandle handle = channel->renderer_handle();
+  decoder_info.decoder_ = new GpuVideoDecoderMFT(param, channel, handle);
+  decoder_info.channel_ = channel;
+  decoder_info.param = *param;
+  decoder_map_[decoder_id] = decoder_info;
+  router->AddRoute(param->decoder_route_id_, decoder_info.decoder_);
+  return true;
+#else
+  return false;
+#endif
+}
+
+void GpuVideoService::DestroyVideoDecoder(
+    MessageRouter* router,
+    int32 decoder_id) {
+  int32 route_id = decoder_map_[decoder_id].param.decoder_route_id_;
+  router->RemoveRoute(route_id);
+  decoder_map_.erase(decoder_id);
+}
+
+int32 GpuVideoService::GetNextAvailableDecoderID() {
+  return ++next_available_decoder_id_;
+}
+