modules/ocl/cl_geo_map_handler.cpp - platform/external/libxcam - Git at Google

 /*
  * cl_geo_map_handler.cpp - CL geometry map handler
  *
  *  Copyright (c) 2016 Intel Corporation
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  * Author: Wind Yuan <feng.yuan@intel.com>
  */

 #include "cl_utils.h"
 #include "cl_geo_map_handler.h"
 #include "cl_device.h"

 namespace XCam {

 static const XCamKernelInfo kernel_geo_map_info = {
     "kernel_geo_map",
 #include "kernel_geo_map.clx"
     , 0,
 };

 // GEO_MAP_CHANNEL for CL_RGBA channel
 #define GEO_MAP_CHANNEL 4  /* only use channel_0, channel_1 */

 CLGeoMapKernel::CLGeoMapKernel (
     const SmartPtr<CLContext> &context, const SmartPtr<GeoKernelParamCallback> handler, bool need_lsc)
     : CLImageKernel (context)
     , _handler (handler)
     , _need_lsc (need_lsc)
 {
     XCAM_ASSERT (handler.ptr ());
 }

 XCamReturn
 CLGeoMapKernel::prepare_arguments (CLArgList &args, CLWorkSize &work_size)
 {
     SmartPtr<CLImage> input_y = _handler->get_geo_input_image (NV12PlaneYIdx);
     SmartPtr<CLImage> input_uv = _handler->get_geo_input_image (NV12PlaneUVIdx);
     SmartPtr<CLImage> output_y = _handler->get_geo_output_image (NV12PlaneYIdx);
     SmartPtr<CLImage> output_uv = _handler->get_geo_output_image (NV12PlaneUVIdx);
     const CLImageDesc &outuv_desc = output_uv->get_image_desc ();
     SmartPtr<CLImage> geo_image = _handler->get_geo_map_table ();

     float geo_scale_size[2]; //width/height
     float out_size[2];
     _handler->get_geo_equivalent_out_size (geo_scale_size[0], geo_scale_size[1]);
     _handler->get_geo_pixel_out_size (out_size[0], out_size[1]);

     args.push_back (new CLMemArgument (input_y));
     args.push_back (new CLMemArgument (input_uv));
     args.push_back (new CLMemArgument (geo_image));
     args.push_back (new CLArgumentTArray<float, 2> (geo_scale_size));

     if (_need_lsc) {
         SmartPtr<CLImage> lsc_image = _handler->get_lsc_table ();
         float *gray_threshold = _handler->get_lsc_gray_threshold ();
         XCAM_FAIL_RETURN (
             ERROR,
             lsc_image.ptr() && lsc_image->is_valid () && gray_threshold,
             XCAM_RETURN_ERROR_PARAM,
             "CLGeoMapHandler::lsc table or gray threshold was not found");
         args.push_back (new CLMemArgument (lsc_image));
         args.push_back (new CLArgumentTArray<float, 2> (gray_threshold));
     }
     args.push_back (new CLMemArgument (output_y));
     args.push_back (new CLMemArgument (output_uv));
     args.push_back (new CLArgumentTArray<float, 2> (out_size));

     work_size.dim = XCAM_DEFAULT_IMAGE_DIM;
     work_size.local[0] = 16;
     work_size.local[1] = 4;
     work_size.global[0] = XCAM_ALIGN_UP (outuv_desc.width, work_size.local[0]);
     work_size.global[1] = XCAM_ALIGN_UP (outuv_desc.height, work_size.local[1]);

     return XCAM_RETURN_NO_ERROR;
 }

 CLGeoMapHandler::CLGeoMapHandler (const SmartPtr<CLContext> &context)
     : CLImageHandler (context, "CLGeoMapHandler")
     , _output_width (0)
     , _output_height (0)
     , _map_width (0)
     , _map_height (0)
     , _map_aligned_width (0)
     , _uint_x (0.0f)
     , _uint_y (0.0f)
     , _geo_map_normalized (false)
 {
 }

 void
 CLGeoMapHandler::get_geo_equivalent_out_size (float &width, float &height)
 {
     width = _map_width * _uint_x;
     height = _map_height * _uint_y;
 }

 void
 CLGeoMapHandler::get_geo_pixel_out_size (float &width, float &height)
 {
     width = _output_width;
     height = _output_height;
 }

 bool
 CLGeoMapHandler::set_map_uint (float uint_x, float uint_y)
 {
     _uint_x = uint_x;
     _uint_y = uint_y;
     return true;
 }

 bool
 CLGeoMapHandler::set_map_data (GeoPos *data, uint32_t width, uint32_t height)
 {
     uint32_t size = width * height * GEO_MAP_CHANNEL * sizeof (float); // 4 for CL_RGBA,
     float *map_ptr = NULL;

     XCAM_FAIL_RETURN (
         ERROR, check_geo_map_buf (width, height), false,
         "CLGeoMapKernel check geo map buffer failed");

     XCamReturn ret = _geo_map->enqueue_map ((void *&)map_ptr, 0, size);
     XCAM_FAIL_RETURN (
         WARNING, ret == XCAM_RETURN_NO_ERROR, false,
         "CLGeoMapKernel map buffer failed");

     uint32_t start, idx;
     for (uint32_t h = 0; h < height; ++h) {
         for (uint32_t w = 0; w < width; ++w) {
             start = (h * _map_aligned_width + w) * GEO_MAP_CHANNEL;
             idx = h * width + w;

             map_ptr [start] = data [idx].x;
             map_ptr [start + 1] = data [idx].y;
         }
     }
     _geo_map->enqueue_unmap ((void *&)map_ptr);
     _geo_map_normalized = false;
     return true;
 }

 bool
 CLGeoMapHandler::check_geo_map_buf (uint32_t width, uint32_t height)
 {
     XCAM_ASSERT (width && height);
     if (width == _map_width && height == _map_height && _geo_map.ptr ()) {
         return true; // geo memory already created
     }

     uint32_t aligned_width = XCAM_ALIGN_UP (width, XCAM_CL_IMAGE_ALIGNMENT_X);  // 4 channel for CL_RGBA, but only use RG
     uint32_t row_pitch = aligned_width * GEO_MAP_CHANNEL * sizeof (float);
     uint32_t size = row_pitch * height;
     SmartPtr<CLContext> context = get_context ();
     XCAM_ASSERT (context.ptr ());
     _geo_map = new CLBuffer (context, size);

     if (!_geo_map.ptr () || !_geo_map->is_valid ()) {
         XCAM_LOG_ERROR ("CLGeoMapKernel create geo map buffer failed.");
         _geo_map.release ();
         return false;
     }

     CLImageDesc cl_geo_desc;
     cl_geo_desc.format.image_channel_data_type = CL_FLOAT;
     cl_geo_desc.format.image_channel_order = CL_RGBA; // CL_FLOAT need co-work with CL_RGBA
     cl_geo_desc.width = width;
     cl_geo_desc.height = height;
     cl_geo_desc.row_pitch = row_pitch;
     _geo_image = new CLImage2D (context, cl_geo_desc, 0, _geo_map);
     if (!_geo_image.ptr () || !_geo_image->is_valid ()) {
         XCAM_LOG_ERROR ("CLGeoMapKernel convert geo map buffer to image2d failed.");
         _geo_map.release ();
         _geo_image.release ();
         return false;
     }

     _map_width = width;
     _map_height = height;
     _map_aligned_width = aligned_width;
     return true;
 }


 bool
 CLGeoMapHandler::normalize_geo_map (uint32_t image_w, uint32_t image_h)
 {
     XCamReturn ret = XCAM_RETURN_NO_ERROR;

     uint32_t row_pitch = _map_aligned_width * GEO_MAP_CHANNEL * sizeof (float);  // 4 channel for CL_RGBA, but only use RG
     uint32_t size = row_pitch * _map_height;
     float *map_ptr = NULL;

     XCAM_ASSERT (image_w && image_h);
     XCAM_FAIL_RETURN (
         ERROR, _geo_map.ptr () && _geo_map->is_valid (),
         false, "CLGeoMapKernel geo_map was not initialized");

     ret = _geo_map->enqueue_map ((void *&)map_ptr, 0, size);
     XCAM_FAIL_RETURN (WARNING, ret == XCAM_RETURN_NO_ERROR, false, "CLGeoMapKernel map buffer failed");
     uint32_t idx = 0;
     for (uint32_t h = 0; h < _map_height; ++h) {
         for (uint32_t w = 0; w < _map_width; ++w) {
             idx = (h * _map_aligned_width + w) * GEO_MAP_CHANNEL;

             map_ptr [idx] /= image_w;
             map_ptr [idx + 1] /= image_h;
         }
     }
     _geo_map->enqueue_unmap ((void *&)map_ptr);

     return true;
 }

 XCamReturn
 CLGeoMapHandler::prepare_buffer_pool_video_info (
     const VideoBufferInfo &input, VideoBufferInfo &output)
 {
     XCAM_FAIL_RETURN (
         WARNING, input.format == V4L2_PIX_FMT_NV12, XCAM_RETURN_ERROR_PARAM,
         "CLGeoMapHandler(%s) input buffer format(%s) not NV12", get_name (), xcam_fourcc_to_string (input.format));

     if (!_output_width || !_output_height) {
         _output_width = input.width;
         _output_height = input.height;
     }
     output.init (
         input.format, _output_width, _output_height,
         XCAM_ALIGN_UP (_output_width, 16), XCAM_ALIGN_UP (_output_height, 16));
     return XCAM_RETURN_NO_ERROR;
 }

 XCamReturn
 CLGeoMapHandler::prepare_parameters (SmartPtr<VideoBuffer> &input, SmartPtr<VideoBuffer> &output)
 {
     const VideoBufferInfo &in_info = input->get_video_info ();
     const VideoBufferInfo &out_info = output->get_video_info ();
     SmartPtr<CLContext> context = get_context ();
     uint32_t input_image_w = XCAM_ALIGN_DOWN (in_info.width, 2);
     uint32_t input_image_h = XCAM_ALIGN_DOWN (in_info.height, 2);

     CLImageDesc cl_desc;
     cl_desc.format.image_channel_data_type = CL_UNORM_INT8;
     cl_desc.format.image_channel_order = CL_R;
     cl_desc.width = input_image_w;
     cl_desc.height = input_image_h;
     cl_desc.row_pitch = in_info.strides[NV12PlaneYIdx];
     _input[NV12PlaneYIdx] = convert_to_climage (context, input, cl_desc, in_info.offsets[NV12PlaneYIdx]);

     cl_desc.format.image_channel_data_type = CL_UNORM_INT8;
     cl_desc.format.image_channel_order = CL_RG;
     cl_desc.width = input_image_w / 2;
     cl_desc.height = input_image_h / 2;
     cl_desc.row_pitch = in_info.strides[NV12PlaneUVIdx];
     _input[NV12PlaneUVIdx] = convert_to_climage (context, input, cl_desc, in_info.offsets[NV12PlaneUVIdx]);

     cl_desc.format.image_channel_data_type = CL_UNSIGNED_INT16;
     cl_desc.format.image_channel_order = CL_RGBA;
     cl_desc.width = XCAM_ALIGN_DOWN (out_info.width, 4) / 8; //CL_RGBA * CL_UNSIGNED_INT16 = 8
     cl_desc.height = XCAM_ALIGN_DOWN (out_info.height, 2);
     cl_desc.row_pitch = out_info.strides[NV12PlaneYIdx];
     _output[NV12PlaneYIdx] = convert_to_climage (context, output, cl_desc, out_info.offsets[NV12PlaneYIdx]);
     cl_desc.height /= 2;
     cl_desc.row_pitch = out_info.strides[NV12PlaneUVIdx];
     _output[NV12PlaneUVIdx] = convert_to_climage (context, output, cl_desc, out_info.offsets[NV12PlaneUVIdx]);

     XCAM_ASSERT (
         _input[NV12PlaneYIdx].ptr () && _input[NV12PlaneYIdx]->is_valid () &&
         _input[NV12PlaneUVIdx].ptr () && _input[NV12PlaneUVIdx]->is_valid () &&
         _output[NV12PlaneYIdx].ptr () && _output[NV12PlaneYIdx]->is_valid () &&
         _output[NV12PlaneUVIdx].ptr () && _output[NV12PlaneUVIdx]->is_valid ());

     XCAM_FAIL_RETURN (
         ERROR, _geo_map.ptr () && _geo_map->is_valid (),
         XCAM_RETURN_ERROR_PARAM, "CLGeoMapHandler map data was not set");

     //calculate kernel map unit_x, unit_y.
     float uint_x, uint_y;
     get_map_uint (uint_x, uint_y);
     if (uint_x < 1.0f && uint_y < 1.0f) {
         uint_x = out_info.width / (float)_map_width;
         uint_y = out_info.height / (float)_map_height;
         set_map_uint (uint_x, uint_y);
     }

     if (!_geo_map_normalized) {
         XCAM_FAIL_RETURN (
             ERROR, normalize_geo_map (input_image_w, input_image_h),
             XCAM_RETURN_ERROR_PARAM, "CLGeoMapHandler normalized geo map failed");
         _geo_map_normalized = true;
     }

     return XCAM_RETURN_NO_ERROR;
 }

 XCamReturn
 CLGeoMapHandler::execute_done (SmartPtr<VideoBuffer> &output)
 {
     XCAM_UNUSED (output);

     for (int i = 0; i < NV12PlaneMax; ++i) {
         _input[i].release ();
         _output[i].release ();
     }

     return XCAM_RETURN_NO_ERROR;
 }

 SmartPtr<CLImageKernel>
 create_geo_map_kernel (
     const SmartPtr<CLContext> &context, SmartPtr<GeoKernelParamCallback> param_cb, bool need_lsc)
 {
     SmartPtr<CLImageKernel> kernel;
     kernel = new CLGeoMapKernel (context, param_cb, need_lsc);
     XCAM_ASSERT (kernel.ptr ());

     char build_options[1024];
     snprintf (build_options, sizeof(build_options), "-DENABLE_LSC=%d", need_lsc ? 1 : 0);
     XCAM_FAIL_RETURN (
         ERROR, kernel->build_kernel (kernel_geo_map_info, build_options) == XCAM_RETURN_NO_ERROR,
         NULL, "build geo map kernel failed");

     return kernel;
 }

 SmartPtr<CLImageHandler>
 create_geo_map_handler (const SmartPtr<CLContext> &context, bool need_lsc)
 {
     SmartPtr<CLGeoMapHandler> handler;
     SmartPtr<CLImageKernel> kernel;

     handler = new CLGeoMapHandler (context);
     XCAM_ASSERT (handler.ptr ());

     kernel = create_geo_map_kernel (context, handler, need_lsc);
     XCAM_FAIL_RETURN (
         ERROR, kernel.ptr (), NULL, "CLMapHandler build geo map kernel failed");
     handler->add_kernel (kernel);

     return handler;
 }

 }
	/*
	* cl_geo_map_handler.cpp - CL geometry map handler
	*
	* Copyright (c) 2016 Intel Corporation
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	* Author: Wind Yuan <feng.yuan@intel.com>
	*/

	#include "cl_utils.h"
	#include "cl_geo_map_handler.h"
	#include "cl_device.h"

	namespace XCam {

	static const XCamKernelInfo kernel_geo_map_info = {
	"kernel_geo_map",
	#include "kernel_geo_map.clx"
	, 0,
	};

	// GEO_MAP_CHANNEL for CL_RGBA channel
	#define GEO_MAP_CHANNEL 4 /* only use channel_0, channel_1 */

	CLGeoMapKernel::CLGeoMapKernel (
	const SmartPtr<CLContext> &context, const SmartPtr<GeoKernelParamCallback> handler, bool need_lsc)
	: CLImageKernel (context)
	, _handler (handler)
	, _need_lsc (need_lsc)
	{
	XCAM_ASSERT (handler.ptr ());
	}

	XCamReturn
	CLGeoMapKernel::prepare_arguments (CLArgList &args, CLWorkSize &work_size)
	{
	SmartPtr<CLImage> input_y = _handler->get_geo_input_image (NV12PlaneYIdx);
	SmartPtr<CLImage> input_uv = _handler->get_geo_input_image (NV12PlaneUVIdx);
	SmartPtr<CLImage> output_y = _handler->get_geo_output_image (NV12PlaneYIdx);
	SmartPtr<CLImage> output_uv = _handler->get_geo_output_image (NV12PlaneUVIdx);
	const CLImageDesc &outuv_desc = output_uv->get_image_desc ();
	SmartPtr<CLImage> geo_image = _handler->get_geo_map_table ();

	float geo_scale_size[2]; //width/height
	float out_size[2];
	_handler->get_geo_equivalent_out_size (geo_scale_size[0], geo_scale_size[1]);
	_handler->get_geo_pixel_out_size (out_size[0], out_size[1]);

	args.push_back (new CLMemArgument (input_y));
	args.push_back (new CLMemArgument (input_uv));
	args.push_back (new CLMemArgument (geo_image));
	args.push_back (new CLArgumentTArray<float, 2> (geo_scale_size));

	if (_need_lsc) {
	SmartPtr<CLImage> lsc_image = _handler->get_lsc_table ();
	float *gray_threshold = _handler->get_lsc_gray_threshold ();
	XCAM_FAIL_RETURN (
	ERROR,
	lsc_image.ptr() && lsc_image->is_valid () && gray_threshold,
	XCAM_RETURN_ERROR_PARAM,
	"CLGeoMapHandler::lsc table or gray threshold was not found");
	args.push_back (new CLMemArgument (lsc_image));
	args.push_back (new CLArgumentTArray<float, 2> (gray_threshold));
	}
	args.push_back (new CLMemArgument (output_y));
	args.push_back (new CLMemArgument (output_uv));
	args.push_back (new CLArgumentTArray<float, 2> (out_size));

	work_size.dim = XCAM_DEFAULT_IMAGE_DIM;
	work_size.local[0] = 16;
	work_size.local[1] = 4;
	work_size.global[0] = XCAM_ALIGN_UP (outuv_desc.width, work_size.local[0]);
	work_size.global[1] = XCAM_ALIGN_UP (outuv_desc.height, work_size.local[1]);

	return XCAM_RETURN_NO_ERROR;
	}

	CLGeoMapHandler::CLGeoMapHandler (const SmartPtr<CLContext> &context)
	: CLImageHandler (context, "CLGeoMapHandler")
	, _output_width (0)
	, _output_height (0)
	, _map_width (0)
	, _map_height (0)
	, _map_aligned_width (0)
	, _uint_x (0.0f)
	, _uint_y (0.0f)
	, _geo_map_normalized (false)
	{
	}

	void
	CLGeoMapHandler::get_geo_equivalent_out_size (float &width, float &height)
	{
	width = _map_width * _uint_x;
	height = _map_height * _uint_y;
	}

	void
	CLGeoMapHandler::get_geo_pixel_out_size (float &width, float &height)
	{
	width = _output_width;
	height = _output_height;
	}

	bool
	CLGeoMapHandler::set_map_uint (float uint_x, float uint_y)
	{
	_uint_x = uint_x;
	_uint_y = uint_y;
	return true;
	}

	bool
	CLGeoMapHandler::set_map_data (GeoPos *data, uint32_t width, uint32_t height)
	{
	uint32_t size = width * height * GEO_MAP_CHANNEL * sizeof (float); // 4 for CL_RGBA,
	float *map_ptr = NULL;

	XCAM_FAIL_RETURN (
	ERROR, check_geo_map_buf (width, height), false,
	"CLGeoMapKernel check geo map buffer failed");

	XCamReturn ret = _geo_map->enqueue_map ((void *&)map_ptr, 0, size);
	XCAM_FAIL_RETURN (
	WARNING, ret == XCAM_RETURN_NO_ERROR, false,
	"CLGeoMapKernel map buffer failed");

	uint32_t start, idx;
	for (uint32_t h = 0; h < height; ++h) {
	for (uint32_t w = 0; w < width; ++w) {
	start = (h * _map_aligned_width + w) * GEO_MAP_CHANNEL;
	idx = h * width + w;

	map_ptr [start] = data [idx].x;
	map_ptr [start + 1] = data [idx].y;
	}
	}
	_geo_map->enqueue_unmap ((void *&)map_ptr);
	_geo_map_normalized = false;
	return true;
	}

	bool
	CLGeoMapHandler::check_geo_map_buf (uint32_t width, uint32_t height)
	{
	XCAM_ASSERT (width && height);
	if (width == _map_width && height == _map_height && _geo_map.ptr ()) {
	return true; // geo memory already created
	}

	uint32_t aligned_width = XCAM_ALIGN_UP (width, XCAM_CL_IMAGE_ALIGNMENT_X); // 4 channel for CL_RGBA, but only use RG
	uint32_t row_pitch = aligned_width * GEO_MAP_CHANNEL * sizeof (float);
	uint32_t size = row_pitch * height;
	SmartPtr<CLContext> context = get_context ();
	XCAM_ASSERT (context.ptr ());
	_geo_map = new CLBuffer (context, size);

	if (!_geo_map.ptr () \|\| !_geo_map->is_valid ()) {
	XCAM_LOG_ERROR ("CLGeoMapKernel create geo map buffer failed.");
	_geo_map.release ();
	return false;
	}

	CLImageDesc cl_geo_desc;
	cl_geo_desc.format.image_channel_data_type = CL_FLOAT;
	cl_geo_desc.format.image_channel_order = CL_RGBA; // CL_FLOAT need co-work with CL_RGBA
	cl_geo_desc.width = width;
	cl_geo_desc.height = height;
	cl_geo_desc.row_pitch = row_pitch;
	_geo_image = new CLImage2D (context, cl_geo_desc, 0, _geo_map);
	if (!_geo_image.ptr () \|\| !_geo_image->is_valid ()) {
	XCAM_LOG_ERROR ("CLGeoMapKernel convert geo map buffer to image2d failed.");
	_geo_map.release ();
	_geo_image.release ();
	return false;
	}

	_map_width = width;
	_map_height = height;
	_map_aligned_width = aligned_width;
	return true;
	}


	bool
	CLGeoMapHandler::normalize_geo_map (uint32_t image_w, uint32_t image_h)
	{
	XCamReturn ret = XCAM_RETURN_NO_ERROR;

	uint32_t row_pitch = _map_aligned_width * GEO_MAP_CHANNEL * sizeof (float); // 4 channel for CL_RGBA, but only use RG
	uint32_t size = row_pitch * _map_height;
	float *map_ptr = NULL;

	XCAM_ASSERT (image_w && image_h);
	XCAM_FAIL_RETURN (
	ERROR, _geo_map.ptr () && _geo_map->is_valid (),
	false, "CLGeoMapKernel geo_map was not initialized");

	ret = _geo_map->enqueue_map ((void *&)map_ptr, 0, size);
	XCAM_FAIL_RETURN (WARNING, ret == XCAM_RETURN_NO_ERROR, false, "CLGeoMapKernel map buffer failed");
	uint32_t idx = 0;
	for (uint32_t h = 0; h < _map_height; ++h) {
	for (uint32_t w = 0; w < _map_width; ++w) {
	idx = (h * _map_aligned_width + w) * GEO_MAP_CHANNEL;

	map_ptr [idx] /= image_w;
	map_ptr [idx + 1] /= image_h;
	}
	}
	_geo_map->enqueue_unmap ((void *&)map_ptr);

	return true;
	}

	XCamReturn
	CLGeoMapHandler::prepare_buffer_pool_video_info (
	const VideoBufferInfo &input, VideoBufferInfo &output)
	{
	XCAM_FAIL_RETURN (
	WARNING, input.format == V4L2_PIX_FMT_NV12, XCAM_RETURN_ERROR_PARAM,
	"CLGeoMapHandler(%s) input buffer format(%s) not NV12", get_name (), xcam_fourcc_to_string (input.format));

	if (!_output_width \|\| !_output_height) {
	_output_width = input.width;
	_output_height = input.height;
	}
	output.init (
	input.format, _output_width, _output_height,
	XCAM_ALIGN_UP (_output_width, 16), XCAM_ALIGN_UP (_output_height, 16));
	return XCAM_RETURN_NO_ERROR;
	}

	XCamReturn
	CLGeoMapHandler::prepare_parameters (SmartPtr<VideoBuffer> &input, SmartPtr<VideoBuffer> &output)
	{
	const VideoBufferInfo &in_info = input->get_video_info ();
	const VideoBufferInfo &out_info = output->get_video_info ();
	SmartPtr<CLContext> context = get_context ();
	uint32_t input_image_w = XCAM_ALIGN_DOWN (in_info.width, 2);
	uint32_t input_image_h = XCAM_ALIGN_DOWN (in_info.height, 2);

	CLImageDesc cl_desc;
	cl_desc.format.image_channel_data_type = CL_UNORM_INT8;
	cl_desc.format.image_channel_order = CL_R;
	cl_desc.width = input_image_w;
	cl_desc.height = input_image_h;
	cl_desc.row_pitch = in_info.strides[NV12PlaneYIdx];
	_input[NV12PlaneYIdx] = convert_to_climage (context, input, cl_desc, in_info.offsets[NV12PlaneYIdx]);

	cl_desc.format.image_channel_data_type = CL_UNORM_INT8;
	cl_desc.format.image_channel_order = CL_RG;
	cl_desc.width = input_image_w / 2;
	cl_desc.height = input_image_h / 2;
	cl_desc.row_pitch = in_info.strides[NV12PlaneUVIdx];
	_input[NV12PlaneUVIdx] = convert_to_climage (context, input, cl_desc, in_info.offsets[NV12PlaneUVIdx]);

	cl_desc.format.image_channel_data_type = CL_UNSIGNED_INT16;
	cl_desc.format.image_channel_order = CL_RGBA;
	cl_desc.width = XCAM_ALIGN_DOWN (out_info.width, 4) / 8; //CL_RGBA * CL_UNSIGNED_INT16 = 8
	cl_desc.height = XCAM_ALIGN_DOWN (out_info.height, 2);
	cl_desc.row_pitch = out_info.strides[NV12PlaneYIdx];
	_output[NV12PlaneYIdx] = convert_to_climage (context, output, cl_desc, out_info.offsets[NV12PlaneYIdx]);
	cl_desc.height /= 2;
	cl_desc.row_pitch = out_info.strides[NV12PlaneUVIdx];
	_output[NV12PlaneUVIdx] = convert_to_climage (context, output, cl_desc, out_info.offsets[NV12PlaneUVIdx]);

	XCAM_ASSERT (
	_input[NV12PlaneYIdx].ptr () && _input[NV12PlaneYIdx]->is_valid () &&
	_input[NV12PlaneUVIdx].ptr () && _input[NV12PlaneUVIdx]->is_valid () &&
	_output[NV12PlaneYIdx].ptr () && _output[NV12PlaneYIdx]->is_valid () &&
	_output[NV12PlaneUVIdx].ptr () && _output[NV12PlaneUVIdx]->is_valid ());

	XCAM_FAIL_RETURN (
	ERROR, _geo_map.ptr () && _geo_map->is_valid (),
	XCAM_RETURN_ERROR_PARAM, "CLGeoMapHandler map data was not set");

	//calculate kernel map unit_x, unit_y.
	float uint_x, uint_y;
	get_map_uint (uint_x, uint_y);
	if (uint_x < 1.0f && uint_y < 1.0f) {
	uint_x = out_info.width / (float)_map_width;
	uint_y = out_info.height / (float)_map_height;
	set_map_uint (uint_x, uint_y);
	}

	if (!_geo_map_normalized) {
	XCAM_FAIL_RETURN (
	ERROR, normalize_geo_map (input_image_w, input_image_h),
	XCAM_RETURN_ERROR_PARAM, "CLGeoMapHandler normalized geo map failed");
	_geo_map_normalized = true;
	}

	return XCAM_RETURN_NO_ERROR;
	}

	XCamReturn
	CLGeoMapHandler::execute_done (SmartPtr<VideoBuffer> &output)
	{
	XCAM_UNUSED (output);

	for (int i = 0; i < NV12PlaneMax; ++i) {
	_input[i].release ();
	_output[i].release ();
	}

	return XCAM_RETURN_NO_ERROR;
	}

	SmartPtr<CLImageKernel>
	create_geo_map_kernel (
	const SmartPtr<CLContext> &context, SmartPtr<GeoKernelParamCallback> param_cb, bool need_lsc)
	{
	SmartPtr<CLImageKernel> kernel;
	kernel = new CLGeoMapKernel (context, param_cb, need_lsc);
	XCAM_ASSERT (kernel.ptr ());

	char build_options[1024];
	snprintf (build_options, sizeof(build_options), "-DENABLE_LSC=%d", need_lsc ? 1 : 0);
	XCAM_FAIL_RETURN (
	ERROR, kernel->build_kernel (kernel_geo_map_info, build_options) == XCAM_RETURN_NO_ERROR,
	NULL, "build geo map kernel failed");

	return kernel;
	}

	SmartPtr<CLImageHandler>
	create_geo_map_handler (const SmartPtr<CLContext> &context, bool need_lsc)
	{
	SmartPtr<CLGeoMapHandler> handler;
	SmartPtr<CLImageKernel> kernel;

	handler = new CLGeoMapHandler (context);
	XCAM_ASSERT (handler.ptr ());

	kernel = create_geo_map_kernel (context, handler, need_lsc);
	XCAM_FAIL_RETURN (
	ERROR, kernel.ptr (), NULL, "CLMapHandler build geo map kernel failed");
	handler->add_kernel (kernel);

	return handler;
	}

	}