MJPEG acceleration for video capture using VAAPI, the GPU and IPC part

content/common/gpu/gpu_channel.cc

Index: content/common/gpu/gpu_channel.cc
diff --git a/content/common/gpu/gpu_channel.cc b/content/common/gpu/gpu_channel.cc
index 017a151de9a149fe7404fe6fa51d819984caad10..6b5228614a0d0a3c669c974875332fee90b0c700 100644
--- a/content/common/gpu/gpu_channel.cc
+++ b/content/common/gpu/gpu_channel.cc
@@ -23,6 +23,7 @@
 #include "content/common/gpu/gpu_channel_manager.h"
 #include "content/common/gpu/gpu_memory_buffer_factory.h"
 #include "content/common/gpu/gpu_messages.h"
+#include "content/common/gpu/media/gpu_jpeg_decode_accelerator.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "gpu/command_buffer/common/value_state.h"
@@ -666,6 +667,8 @@ bool GpuChannel::OnControlMessageReceived(const IPC::Message& msg) {
                         OnCreateOffscreenCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuChannelMsg_DestroyCommandBuffer,
                         OnDestroyCommandBuffer)
+    IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuMsg_CreateJpegDecoder,
+                                    OnCreateJpegDecoder)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   DCHECK(handled) << msg.type();
@@ -787,6 +790,13 @@ void GpuChannel::OnDestroyCommandBuffer(int32 route_id) {
   }
 }
 
+void GpuChannel::OnCreateJpegDecoder(int32 route_id, IPC::Message* reply_msg) {
+  if (!jpeg_decoder_) {
+    jpeg_decoder_.reset(new GpuJpegDecodeAccelerator(this, io_task_runner_));
+  }
+  jpeg_decoder_->AddClient(route_id, reply_msg);
+}
+
 void GpuChannel::MessageProcessed() {
   messages_processed_++;
   if (preempting_flag_.get()) {