MJPEG acceleration for V4L2

content/common/gpu/media/gpu_jpeg_decode_accelerator.cc

 // Copyright 2015 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/media/gpu_jpeg_decode_accelerator.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/trace_event/trace_event.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/message_filter.h"
 #include "media/filters/jpeg_parser.h"
 #include "ui/gfx/geometry/size.h"
 
 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)

[wuchengli, 2015/05/25 10:29:23]

#if defined(OS_CHROMEOS)
  #if defined(ARCH_CPU_X86_FAMILY)
  #elif defined(USE_V4L2_CODEC)
  #endif
#endif

[henryhsu, 2015/06/05 03:28:55]

Done.

 #include "content/common/gpu/media/vaapi_jpeg_decode_accelerator.h"
+#elif defined(USE_V4L2_CODEC)
+#include "content/common/gpu/media/v4l2_device.h"
+#include "content/common/gpu/media/v4l2_jpeg_decode_accelerator.h"
 #endif
 
 namespace base {
 
 void DefaultDeleter<content::GpuJpegDecodeAccelerator>::operator()(
     void* jpeg_decode_accelerator) const {
   static_cast<content::GpuJpegDecodeAccelerator*>(jpeg_decode_accelerator)
       ->Destroy();
 }
 
@@ skipping 72 matching lines @@
 
 bool GpuJpegDecodeAccelerator::Initialize() {
   DCHECK(child_message_loop_->BelongsToCurrentThread());
   DCHECK(!jpeg_decode_accelerator_.get());
 
 // When adding more platforms, GpuJpegDecodeAcceleratorAdapter::Supported need
 // update as well.
 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
   jpeg_decode_accelerator_.reset(
       new VaapiJpegDecodeAccelerator(io_message_loop_));
+#elif defined(OS_CHROMEOS) && defined(USE_V4L2_CODEC)
+  scoped_refptr<V4L2Device> device = V4L2Device::Create(
+      V4L2Device::kJpegDecoder);
+  if (device.get()) {
+    jpeg_decode_accelerator_.reset(new V4L2JpegDecodeAccelerator(
+        device,
+        io_message_loop_));
+  }
 #else
   DVLOG(1) << "HW JPEG decode acceleration not available.";
   return false;
 #endif
 
   if (!channel_->AddRoute(host_route_id_, this)) {
     LOG(ERROR) << "GpuJpegDecodeAccelerator::Initialize(): "
                   "failed to add route";
     return false;
   }
@@ skipping 107 matching lines @@
   delete this;
 }
 
 bool GpuJpegDecodeAccelerator::Send(IPC::Message* message) {
   if (io_message_loop_->BelongsToCurrentThread())
     return filter_->SendOnIOThread(message);
   return channel_->Send(message);
 }
 
 }  // namespace content