Add VAVDA, the VAAPI Video Decode Accelerator for Intel CPUs.

content/common/gpu/media/gpu_video_decode_accelerator.cc

Index: content/common/gpu/media/gpu_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/gpu_video_decode_accelerator.cc b/content/common/gpu/media/gpu_video_decode_accelerator.cc
index 224ba3ab5cd820cdb67acf00a5709fdb39a28101..fe46d67803b2cf6bedd2d4c675303e9a02b83eb5 100644
--- a/content/common/gpu/media/gpu_video_decode_accelerator.cc
+++ b/content/common/gpu/media/gpu_video_decode_accelerator.cc
@@ -21,15 +21,24 @@
 #include "content/common/gpu/gpu_command_buffer_stub.h"
 #include "content/common/gpu/gpu_messages.h"
 
-#if (defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)) || defined(OS_WIN)
 #if defined(OS_WIN)
 #include "content/common/gpu/media/dxva_video_decode_accelerator.h"
-#else  // OS_WIN
+
+#elif defined(OS_CHROMEOS)

[Ami GONE FROM CHROMIUM, 2012/04/09 02:41:47]

else isn't buying you clarity here; I'd close the OS_WIN above and open a new
#if CROS here.

[Pawel Osciak, 2012/05/03 16:22:07]

Done.

+#if defined(ARCH_CPU_ARMEL)
 #include "content/common/gpu/media/omx_video_decode_accelerator.h"
+#elif defined(ARCH_CPU_X86_FAMILY)

[Ami GONE FROM CHROMIUM, 2012/04/09 02:41:47]

Is it the case that all cros/intel have VA HW support?  
Is it harmless to build this into platforms that don't have it?

[Pawel Osciak, 2012/05/03 16:22:07]

No, not all of them, but it's harmless, libva will report HW decode is not
supported and VAVDA::Initialize() will fail.

+#include "ui/gfx/gl/gl_context_glx.h"
+#include "ui/gfx/gl/gl_surface_glx.h"
+#include "content/common/gpu/media/vaapi_video_decode_accelerator.h"
+#endif  // OS_CHROMEOS
+
 #endif  // OS_WIN
+
+#if defined(OS_WIN) || defined(OS_CHROMEOS)
 #include "ui/gfx/gl/gl_context.h"
 #include "ui/gfx/gl/gl_surface_egl.h"
-#endif
+#endif  // OS_WIN || OS_CHROMEOS
 
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "ui/gfx/size.h"
@@ -123,7 +132,7 @@ void GpuVideoDecodeAccelerator::Initialize(
   DCHECK(init_done_msg);
   init_done_msg_ = init_done_msg;
 
-#if (defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)) || defined(OS_WIN)
+#if defined(OS_CHROMEOS) || defined(OS_WIN)
   DCHECK(stub_ && stub_->decoder());
 #if defined(OS_WIN)
   if (base::win::GetVersion() < base::win::VERSION_WIN7) {
@@ -134,12 +143,23 @@ void GpuVideoDecodeAccelerator::Initialize(
   DLOG(INFO) << "Initializing DXVA HW decoder for windows.";
   DXVAVideoDecodeAccelerator* video_decoder =
       new DXVAVideoDecodeAccelerator(this, renderer_process);
-#else  // OS_WIN
+#elif defined(OS_CHROMEOS)  // OS_WIN
+#if defined(ARCH_CPU_ARMEL)
   OmxVideoDecodeAccelerator* video_decoder =
       new OmxVideoDecodeAccelerator(this);
   video_decoder->SetEglState(
       gfx::GLSurfaceEGL::GetHardwareDisplay(),
       stub_->decoder()->GetGLContext()->GetHandle());
+#elif defined(ARCH_CPU_X86_FAMILY)
+  VaapiVideoDecodeAccelerator* video_decoder =
+      new VaapiVideoDecodeAccelerator(this);
+  gfx::GLContextGLX* glx_context =
+      static_cast<gfx::GLContextGLX*>(stub_->decoder()->GetGLContext());
+  Display* display = glx_context->GetDisplay();
+  GLXContext glx_context_handle =
+      static_cast<GLXContext>(glx_context->GetHandle());
+  video_decoder->SetGlxState(display, glx_context_handle);
+#endif  // ARCH_CPU_ARMEL
 #endif  // OS_WIN
   video_decode_accelerator_ = video_decoder;
   if (!video_decode_accelerator_->Initialize(profile))
@@ -147,7 +167,7 @@ void GpuVideoDecodeAccelerator::Initialize(
 #else  // Update RenderViewImpl::createMediaPlayer when adding clauses.
   NOTIMPLEMENTED() << "HW video decode acceleration not available.";
   NotifyError(media::VideoDecodeAccelerator::PLATFORM_FAILURE);
-#endif  // defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)
+#endif  // defined(OS_CHROMEOS) || defined(OS_WIN)
 }
 
 void GpuVideoDecodeAccelerator::OnDecode(