Merging-in the OpenCL Scaling code from the OpenCL branch to trunk.

Patch originally by the Multicoreware Inc team, followed by improvements and fixes by Micheal Wootton from AMD Inc,

OpenCL:
This patch implements Bicubic Scaling in OpenCL.  
Note that HandBrake currently uses Lanczos so the performance difference appears to be much more significant. We may offer an option of BiCubic in software later.
Bicubic scaling may appear a bit sharper than the equivalent Lanczos encode and may increase file size a bit. Quality may be better or worse depending on the scaling and content and personal preference towards sharpness.
When comparing performance with a custom HandBrake build that runs Software Bicubic to OpenCL Bicubic, performance increase is about 5~7% on average on a modern GPU.


Hardware Decode via DXVA:
We also have optional DXVA decoding which may come in useful for slower/lower end systems that have a capable GPU.
This is only available on input sources that use the libav decode path.
Most GPU hardware for decoding is designed for playback, so if you are running on a high end CPU, it will bottleneck the encode process.

Requires OpenCL 1.1 or later supporting GPU.

Front end changes and testing framework are not included in this patch. This will be resolved later.

Patch will be revised further before the UI is implemented.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5792 b64f7644-9d1e-0410-96f1-a4d463321fa5

1 files changed, 35 insertions, 0 deletions

diff --git a/libhb/oclnv12toyuv.h b/libhb/oclnv12toyuv.h
new file mode 100644
index 000000000..86f7673bb
--- /dev/null
+++ b/libhb/oclnv12toyuv.h
@@ -0,0 +1,35 @@
+/* oclnv12toyuv.h
+
+   Copyright (c) 2003-2012 HandBrake Team
+   This file is part of the HandBrake source code
+   Homepage: <http://handbrake.fr/>.
+   It may be used under the terms of the GNU General Public License v2.
+   For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
+   
+   Authors: Peng Gao <[email protected]> <http://www.multicorewareinc.com/>
+            Li   Cao <[email protected]> <http://www.multicorewareinc.com/>
+
+ */
+
+#ifdef USE_OPENCL
+#ifndef RENDER_CL_H
+#define RENDER_CL_H
+
+#if defined(__APPLE__)
+#include <OpenCL/cl.h>
+#else
+#include <CL/cl.h>
+#endif
+
+#include "common.h"
+#include "openclwrapper.h"
+
+/**
+ * nv12 to yuv interface
+ * bufi is input frame of nv12, w is input frame width, h is input frame height
+ */
+#ifdef USE_HWD
+int hb_ocl_nv12toyuv( uint8_t *bufi[], int p, int w, int h, int *crop, hb_va_dxva2_t *dxva2, int decomb, int detelecine );
+#endif
+#endif
+#endif