Fix DXVA2 video decoding which was broken with recent process handle brokering changes

content/common/gpu/client/gpu_video_decode_accelerator_host.cc

 // 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/common/gpu/client/gpu_video_decode_accelerator_host.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/view_messages.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 
+#if defined(OS_WIN)
+#include "content/public/common/sandbox_init.h"
+#endif  // OS_WIN
+
 using media::VideoDecodeAccelerator;
 
 GpuVideoDecodeAcceleratorHost::GpuVideoDecodeAcceleratorHost(
     GpuChannelHost* channel,
     int32 decoder_route_id,
     VideoDecodeAccelerator::Client* client)
     : channel_(channel),
       decoder_route_id_(decoder_route_id),
       client_(client) {
   DCHECK(channel_);
@@ skipping 32 matching lines @@
 
 bool GpuVideoDecodeAcceleratorHost::Initialize(
     media::VideoCodecProfile profile) {
   NOTREACHED();
   return true;
 }
 
 void GpuVideoDecodeAcceleratorHost::Decode(
     const media::BitstreamBuffer& bitstream_buffer) {
   DCHECK(CalledOnValidThread());
+  base::SharedMemoryHandle buffer_handle = bitstream_buffer.handle();
+#if defined(OS_WIN)
+  if (!content::BrokerDuplicateHandle(bitstream_buffer.handle(),
+                                      channel_->gpu_pid(),
+                                      &buffer_handle, 0,
+                                      DUPLICATE_SAME_ACCESS)) {
+    NOTREACHED() << "Failed to duplicate buffer handler";
+    return;
+  }
+#endif  // OS_WIN
+
   Send(new AcceleratedVideoDecoderMsg_Decode(
-      decoder_route_id_, bitstream_buffer.handle(),
-      bitstream_buffer.id(), bitstream_buffer.size()));
+      decoder_route_id_, buffer_handle, bitstream_buffer.id(),
+      bitstream_buffer.size()));
 }
 
 void GpuVideoDecodeAcceleratorHost::AssignPictureBuffers(
     const std::vector<media::PictureBuffer>& buffers) {
   DCHECK(CalledOnValidThread());
   // Rearrange data for IPC command.
   std::vector<int32> buffer_ids;
   std::vector<uint32> texture_ids;
   std::vector<gfx::Size> sizes;
   for (uint32 i = 0; i < buffers.size(); i++) {
@@ skipping 83 matching lines @@
     client_->NotifyResetDone();
 }
 
 void GpuVideoDecodeAcceleratorHost::OnErrorNotification(uint32 error) {
   DCHECK(CalledOnValidThread());
   if (!client_)
     return;
   client_->NotifyError(
       static_cast<media::VideoDecodeAccelerator::Error>(error));
 }