DownMix Node and to_decibels augmentations

amd_openvx_extensions/amd_rpp/CMakeLists.txt

@@ -133,6 +133,7 @@ list(APPEND SOURCES
         source/tensor/Copy.cpp
         source/tensor/Crop.cpp
         source/tensor/CropMirrorNormalize.cpp
+        source/tensor/Downmix.cpp
         source/tensor/Exposure.cpp
         source/tensor/FishEye.cpp
         source/tensor/Flip.cpp
@@ -155,6 +156,7 @@ list(APPEND SOURCES
         source/tensor/SequenceRearrange.cpp
         source/tensor/Snow.cpp
         source/tensor/Spectrogram.cpp
+        source/tensor/ToDecibels.cpp
         source/tensor/Vignette.cpp
         source/tensor/WarpAffine.cpp
         source/tensor/SequenceRearrange.cpp

amd_openvx_extensions/amd_rpp/include/internal_publishKernels.h

@@ -157,6 +157,8 @@ vx_status WarpAffine_Register(vx_context);
 vx_status SequenceRearrange_Register(vx_context);
 vx_status PreemphasisFilter_Register(vx_context);
 vx_status Spectrogram_Register(vx_context);
+vx_status Downmix_Register(vx_context);
+vx_status ToDecibels_Register(vx_context);
 
 // kernel names
 #define VX_KERNEL_RPP_NOPBATCHPD_NAME                           "org.rpp.NopbatchPD"
@@ -283,5 +285,7 @@ vx_status Spectrogram_Register(vx_context);
 #define VX_KERNEL_RPP_SEQUENCEREARRANGE_NAME                    "org.rpp.SequenceRearrange"
 #define VX_KERNEL_RPP_PREEMPHASISFILTER_NAME                    "org.rpp.PreemphasisFilter"
 #define VX_KERNEL_RPP_SPECTROGRAM_NAME                          "org.rpp.Spectrogram"
+#define VX_KERNEL_RPP_DOWNMIX_NAME                              "org.rpp.Downmix"
+#define VX_KERNEL_RPP_TODECIBELS_NAME                           "org.rpp.ToDecibels"
 
 #endif //_AMDVX_EXT__PUBLISH_KERNELS_H_

amd_openvx_extensions/amd_rpp/include/kernels_rpp.h

@@ -149,7 +149,9 @@ extern "C"
         VX_KERNEL_RPP_VIGNETTE = VX_KERNEL_BASE(VX_ID_AMD, VX_LIBRARY_RPP) + 0x72,
         VX_KERNEL_RPP_WARPAFFINE = VX_KERNEL_BASE(VX_ID_AMD, VX_LIBRARY_RPP) + 0x73,
         VX_KERNEL_RPP_PREEMPHASISFILTER = VX_KERNEL_BASE(VX_ID_AMD, VX_LIBRARY_RPP) + 0x74,
-        VX_KERNEL_RPP_SPECTROGRAM = VX_KERNEL_BASE(VX_ID_AMD, VX_LIBRARY_RPP) + 0x75
+        VX_KERNEL_RPP_SPECTROGRAM = VX_KERNEL_BASE(VX_ID_AMD, VX_LIBRARY_RPP) + 0x75,
+        VX_KERNEL_RPP_DOWNMIX = VX_KERNEL_BASE(VX_ID_AMD, VX_LIBRARY_RPP) + 0x76,
+        VX_KERNEL_RPP_TODECIBELS = VX_KERNEL_BASE(VX_ID_AMD, VX_LIBRARY_RPP) + 0x77
     };
 
 #ifdef __cplusplus

amd_openvx_extensions/amd_rpp/include/vx_ext_rpp.h

@@ -1896,6 +1896,29 @@ extern "C"
 	*/
 	SHARED_PUBLIC vx_node VX_API_CALL vxExtRppSpectrogram(vx_graph graph, vx_tensor pSrc, vx_tensor pSrcRoi, vx_tensor pDst, vx_tensor pDstRoi, vx_array windowFunction, vx_scalar centerWindow, vx_scalar reflectPadding, vx_scalar spectrogramLayout, vx_scalar power, vx_scalar nfft, vx_scalar windowLength, vx_scalar windowStep);
 
+	/*! \brief [Graph] Applies downmixing to the input tensor.
+	 * \ingroup group_amd_rpp
+	 * \param [in] graph The handle to the graph.
+	 * \param [in] pSrc The input tensor in <tt>\ref VX_TYPE_FLOAT32</tt> format data.
+	 * \param [out] pDst The output tensor in <tt>\ref VX_TYPE_FLOAT32</tt> format data.
+     * \param [in] pSrcRoi The input tensor of batch size in <tt>unsigned int<tt> containing the roi values for the input.
+	 * \return A node reference <tt>\ref vx_node</tt>. Any possible errors preventing a successful creation should be checked using <tt>\ref vxGetStatus</tt>.
+	 */
+	SHARED_PUBLIC vx_node VX_API_CALL vxExtRppDownmix(vx_graph graph, vx_tensor pSrc, vx_tensor pDst, vx_tensor srcRoi);
+
+	/*! \brief [Graph] Applies to_decibels augmentation to the input tensor.
+	 * \ingroup group_amd_rpp
+	 * \param [in] graph The handle to the graph.
+	 * \param [in] pSrc The input tensor in <tt>\ref VX_TYPE_FLOAT32</tt> format data.
+	 * \param[in] pSrcRoi The input tensor of batch size in <tt>unsigned int<tt> containing the roi values for the input.
+	 * \param [out] pDst The output tensor in <tt>\ref VX_TYPE_FLOAT32</tt> format data.
+	 * \param[in] cutOffDB The input scalar in <tt>\ref VX_TYPE_FLOAT32</tt> format containing  minimum or cut-off ratio in dB
+	 * \param[in] multiplier The input scalar in <tt>\ref VX_TYPE_FLOAT32</tt> format containing factor by which the logarithm is multiplied
+	 * \param[in] referenceMagnitude The input scalar in <tt>\ref VX_TYPE_FLOAT32</tt> format containing Reference magnitude which if not provided uses maximum value of input as reference
+	 * \return A node reference <tt>\ref vx_node</tt>. Any possible errors preventing a successful creation should be checked using <tt>\ref vxGetStatus</tt>.
+	 */
+	SHARED_PUBLIC vx_node VX_API_CALL vxExtRppToDecibels(vx_graph graph, vx_tensor pSrc, vx_tensor pSrcRoi, vx_tensor pDst, vx_scalar cutOffDB, vx_scalar multiplier, vx_scalar referenceMagnitude);
+
 #ifdef __cplusplus
 }
 #endif

amd_openvx_extensions/amd_rpp/source/internal_publishKernels.cpp

@@ -162,6 +162,8 @@ vx_status get_kernels_to_publish()
     STATUS_ERROR_CHECK(ADD_KERNEL(WarpAffine_Register));
     STATUS_ERROR_CHECK(ADD_KERNEL(PreemphasisFilter_Register));
     STATUS_ERROR_CHECK(ADD_KERNEL(Spectrogram_Register));
+    STATUS_ERROR_CHECK(ADD_KERNEL(Downmix_Register));
+    STATUS_ERROR_CHECK(ADD_KERNEL(ToDecibels_Register));
 
     return status;
 }

amd_openvx_extensions/amd_rpp/source/kernel_rpp.cpp

@@ -2584,6 +2584,41 @@ VX_API_ENTRY vx_node VX_API_CALL vxExtRppSpectrogram(vx_graph graph, vx_tensor p
     return node;
 }
 
+VX_API_ENTRY vx_node VX_API_CALL vxExtRppDownmix(vx_graph graph, vx_tensor pSrc, vx_tensor pDst, vx_tensor pSrcRoi) {
+    vx_node node = NULL;
+    vx_context context = vxGetContext((vx_reference)graph);
+    if (vxGetStatus((vx_reference)context) == VX_SUCCESS) {
+        vx_uint32 devType = getGraphAffinity(graph);
+        vx_scalar deviceType = vxCreateScalar(vxGetContext((vx_reference)graph), VX_TYPE_UINT32, &devType);
+        vx_reference params[] = {
+            (vx_reference)pSrc,
+            (vx_reference)pDst,
+            (vx_reference)pSrcRoi,
+            (vx_reference)deviceType};
+        node = createNode(graph, VX_KERNEL_RPP_DOWNMIX, params, 4);
+    }
+    return node;
+}
+
+VX_API_ENTRY vx_node VX_API_CALL vxExtRppToDecibels(vx_graph graph, vx_tensor pSrc, vx_tensor pSrcRoi, vx_tensor pDst, vx_scalar cutOffDB, vx_scalar multiplier, vx_scalar referenceMagnitude) {
+    vx_node node = NULL;
+    vx_context context = vxGetContext((vx_reference)graph);
+    if (vxGetStatus((vx_reference)context) == VX_SUCCESS) {
+        vx_uint32 devType = getGraphAffinity(graph);
+        vx_scalar deviceType = vxCreateScalar(vxGetContext((vx_reference)graph), VX_TYPE_UINT32, &devType);
+        vx_reference params[] = {
+            (vx_reference)pSrc,
+            (vx_reference)pSrcRoi,
+            (vx_reference)pDst,
+            (vx_reference)cutOffDB,
+            (vx_reference)multiplier,
+            (vx_reference)referenceMagnitude,
+            (vx_reference)deviceType};
+        node = createNode(graph, VX_KERNEL_RPP_TODECIBELS, params, 7);
+    }
+    return node;
+}
+
 RpptDataType getRpptDataType(vx_enum vxDataType) {
     switch(vxDataType) {
         case vx_type_e::VX_TYPE_FLOAT32:

amd_openvx_extensions/amd_rpp/source/tensor/Downmix.cpp

@@ -0,0 +1,206 @@
+/*
+Copyright (c) 2024 Advanced Micro Devices, Inc. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "internal_publishKernels.h"
+#include "vx_ext_amd.h"
+
+struct DownmixLocalData {
+    vxRppHandle *handle;
+    Rpp32u deviceType;
+    RppPtr_t pSrc;
+    RppPtr_t pDst;
+    vx_int32 *psrcRoi;
+    RpptDescPtr pSrcDesc;
+    RpptDescPtr pDstDesc;
+    size_t inputTensorDims[RPP_MAX_TENSOR_DIMS];
+    size_t outputTensorDims[RPP_MAX_TENSOR_DIMS];
+};
+
+static vx_status VX_CALLBACK refreshDownmix(vx_node node, const vx_reference *parameters, vx_uint32 num, DownmixLocalData *data) {
+    vx_status status = VX_SUCCESS;
+    void *roi_tensor_ptr_src;
+    if (data->deviceType == AGO_TARGET_AFFINITY_GPU) {
+#if ENABLE_OPENCL || ENABLE_HIP
+        return VX_ERROR_NOT_IMPLEMENTED;
+#endif
+    } else if (data->deviceType == AGO_TARGET_AFFINITY_CPU) {
+        STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[0], VX_TENSOR_BUFFER_HOST, &data->pSrc, sizeof(data->pSrc)));
+        STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_BUFFER_HOST, &data->pDst, sizeof(data->pDst)));
+        STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[2], VX_TENSOR_BUFFER_HOST, &roi_tensor_ptr_src, sizeof(roi_tensor_ptr_src)));
+    }
+    RpptROI *src_roi = reinterpret_cast<RpptROI *>(roi_tensor_ptr_src);
+    for (int n = 0; n < data->inputTensorDims[0]; n++) {
+        data->psrcRoi[n * 2] = src_roi[n].xywhROI.roiWidth;
+        data->psrcRoi[n * 2 + 1] = src_roi[n].xywhROI.roiHeight;
+    }
+    return status;
+}
+
+static vx_status VX_CALLBACK validateDownmix(vx_node node, const vx_reference parameters[], vx_uint32 num, vx_meta_format metas[]) {
+    vx_status status = VX_SUCCESS;
+    vx_enum scalar_type;
+    STATUS_ERROR_CHECK(vxQueryScalar((vx_scalar)parameters[3], VX_SCALAR_TYPE, &scalar_type, sizeof(scalar_type)));
+    if (scalar_type != VX_TYPE_UINT32)
+        return ERRMSG(VX_ERROR_INVALID_TYPE, "validate: Paramter: #3 type=%d (must be size)\n", scalar_type);
+
+    // Check for input parameters
+    size_t num_tensor_dims;
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[0], VX_TENSOR_NUMBER_OF_DIMS, &num_tensor_dims, sizeof(num_tensor_dims)));
+    if (num_tensor_dims < 3) return ERRMSG(VX_ERROR_INVALID_DIMENSION, "validate: Downmix: tensor: #0 dimensions=%lu (must be greater than or equal to 3)\n", num_tensor_dims);
+
+    // Check for output parameters
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_NUMBER_OF_DIMS, &num_tensor_dims, sizeof(num_tensor_dims)));
+    if (num_tensor_dims < 3) return ERRMSG(VX_ERROR_INVALID_DIMENSION, "validate: Downmix: tensor: #1 dimensions=%lu (must be greater than or equal to 3)\n", num_tensor_dims);
+
+    vx_uint8 tensor_fixed_point_position;
+    size_t tensor_dims[RPP_MAX_TENSOR_DIMS];
+    vx_enum tensor_datatype;
+
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_DIMS, &tensor_dims, sizeof(tensor_dims)));
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_DATA_TYPE, &tensor_datatype, sizeof(tensor_datatype)));
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_FIXED_POINT_POSITION, &tensor_fixed_point_position, sizeof(tensor_fixed_point_position)));
+    STATUS_ERROR_CHECK(vxSetMetaFormatAttribute(metas[1], VX_TENSOR_NUMBER_OF_DIMS, &num_tensor_dims, sizeof(num_tensor_dims)));
+    STATUS_ERROR_CHECK(vxSetMetaFormatAttribute(metas[1], VX_TENSOR_DIMS, &tensor_dims, sizeof(tensor_dims)));
+    STATUS_ERROR_CHECK(vxSetMetaFormatAttribute(metas[1], VX_TENSOR_DATA_TYPE, &tensor_datatype, sizeof(tensor_datatype)));
+    STATUS_ERROR_CHECK(vxSetMetaFormatAttribute(metas[1], VX_TENSOR_FIXED_POINT_POSITION, &tensor_fixed_point_position, sizeof(tensor_fixed_point_position)));
+    return status;
+}
+
+static vx_status VX_CALLBACK processDownmix(vx_node node, const vx_reference *parameters, vx_uint32 num) {
+    RppStatus rpp_status = RPP_SUCCESS;
+    vx_status return_status = VX_SUCCESS;
+    DownmixLocalData *data = NULL;
+    STATUS_ERROR_CHECK(vxQueryNode(node, VX_NODE_LOCAL_DATA_PTR, &data, sizeof(data)));
+    if (data->deviceType == AGO_TARGET_AFFINITY_GPU) {
+#if ENABLE_OPENCL || ENABLE_HIP
+        return VX_ERROR_NOT_IMPLEMENTED;
+#endif
+    } else if (data->deviceType == AGO_TARGET_AFFINITY_CPU) {
+        refreshDownmix(node, parameters, num, data);
+        rpp_status = rppt_down_mixing_host((float *)data->pSrc, data->pSrcDesc, (float *)data->pDst, data->pDstDesc, (Rpp32s *)data->psrcRoi, false, data->handle->rppHandle);
+        return_status = (rpp_status == RPP_SUCCESS) ? VX_SUCCESS : VX_FAILURE;
+    }
+    return return_status;
+}
+
+static vx_status VX_CALLBACK initializeDownmix(vx_node node, const vx_reference *parameters, vx_uint32 num) {
+    DownmixLocalData *data = new DownmixLocalData;
+    memset(data, 0, sizeof(DownmixLocalData));
+
+    vx_enum input_tensor_datatype, output_tensor_datatype;
+    STATUS_ERROR_CHECK(vxCopyScalar((vx_scalar)parameters[3], &data->deviceType, VX_READ_ONLY, VX_MEMORY_TYPE_HOST));
+
+    // Querying for input tensor
+    data->pSrcDesc = new RpptDesc;
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[0], VX_TENSOR_NUMBER_OF_DIMS, &data->pSrcDesc->numDims, sizeof(data->pSrcDesc->numDims)));
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[0], VX_TENSOR_DIMS, &data->inputTensorDims, sizeof(vx_size) * data->pSrcDesc->numDims));
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[0], VX_TENSOR_DATA_TYPE, &input_tensor_datatype, sizeof(input_tensor_datatype)));
+    data->pSrcDesc->dataType = getRpptDataType(input_tensor_datatype);
+    data->pSrcDesc->offsetInBytes = 0;
+    fillAudioDescriptionPtrFromDims(data->pSrcDesc, data->inputTensorDims);
+
+    // Querying for output tensor
+    data->pDstDesc = new RpptDesc;
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_NUMBER_OF_DIMS, &data->pDstDesc->numDims, sizeof(data->pDstDesc->numDims)));
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_DIMS, &data->outputTensorDims, sizeof(vx_size) * data->pDstDesc->numDims));
+    STATUS_ERROR_CHECK(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_DATA_TYPE, &output_tensor_datatype, sizeof(output_tensor_datatype)));
+    data->pDstDesc->dataType = getRpptDataType(output_tensor_datatype);
+    data->pDstDesc->offsetInBytes = 0;
+    fillAudioDescriptionPtrFromDims(data->pDstDesc, data->outputTensorDims);
+
+    data->psrcRoi = new vx_int32[data->pSrcDesc->n * 2];
+
+    refreshDownmix(node, parameters, num, data);
+    STATUS_ERROR_CHECK(createRPPHandle(node, &data->handle, data->pSrcDesc->n, data->deviceType));
+    STATUS_ERROR_CHECK(vxSetNodeAttribute(node, VX_NODE_LOCAL_DATA_PTR, &data, sizeof(data)));
+    return VX_SUCCESS;
+}
+
+static vx_status VX_CALLBACK uninitializeDownmix(vx_node node, const vx_reference *parameters, vx_uint32 num) {
+    DownmixLocalData *data;
+    STATUS_ERROR_CHECK(vxQueryNode(node, VX_NODE_LOCAL_DATA_PTR, &data, sizeof(data)));
+    STATUS_ERROR_CHECK(releaseRPPHandle(node, data->handle, data->deviceType));
+    delete[] data->psrcRoi;
+    delete data->pSrcDesc;
+    delete data->pDstDesc;
+    delete data;
+    return VX_SUCCESS;
+}
+
+//! \brief The kernel target support callback.
+// TODO::currently the node is setting the same affinity as context. This needs to change when we have hybrid modes in the same graph
+static vx_status VX_CALLBACK query_target_support(vx_graph graph, vx_node node,
+                                                  vx_bool use_opencl_1_2,               // [input]  false: OpenCL driver is 2.0+; true: OpenCL driver is 1.2
+                                                  vx_uint32 &supported_target_affinity  // [output] must be set to AGO_TARGET_AFFINITY_CPU or AGO_TARGET_AFFINITY_GPU or (AGO_TARGET_AFFINITY_CPU | AGO_TARGET_AFFINITY_GPU)
+) {
+    vx_context context = vxGetContext((vx_reference)graph);
+    AgoTargetAffinityInfo affinity;
+    vxQueryContext(context, VX_CONTEXT_ATTRIBUTE_AMD_AFFINITY, &affinity, sizeof(affinity));
+    if (affinity.device_type == AGO_TARGET_AFFINITY_GPU)
+        supported_target_affinity = AGO_TARGET_AFFINITY_GPU;
+    else
+        supported_target_affinity = AGO_TARGET_AFFINITY_CPU;
+
+    // hardcode the affinity to  CPU for OpenCL backend to avoid VerifyGraph failure since there is no codegen callback for amd_rpp nodes
+
+    return VX_SUCCESS;
+}
+
+vx_status Downmix_Register(vx_context context) {
+    vx_status status = VX_SUCCESS;
+    // Add kernel to the context with callbacks
+    vx_kernel kernel = vxAddUserKernel(context, "org.rpp.Downmix",
+                                       VX_KERNEL_RPP_DOWNMIX,
+                                       processDownmix,
+                                       4,
+                                       validateDownmix,
+                                       initializeDownmix,
+                                       uninitializeDownmix);
+    ERROR_CHECK_OBJECT(kernel);
+    AgoTargetAffinityInfo affinity;
+    vxQueryContext(context, VX_CONTEXT_ATTRIBUTE_AMD_AFFINITY, &affinity, sizeof(affinity));
+#if ENABLE_HIP
+    // enable OpenCL buffer access since the kernel_f callback uses OpenCL buffers instead of host accessible buffers
+    vx_bool enableBufferAccess = vx_true_e;
+    if (affinity.device_type == AGO_TARGET_AFFINITY_GPU)
+        STATUS_ERROR_CHECK(vxSetKernelAttribute(kernel, VX_KERNEL_ATTRIBUTE_AMD_GPU_BUFFER_ACCESS_ENABLE, &enableBufferAccess, sizeof(enableBufferAccess)));
+#else
+    vx_bool enableBufferAccess = vx_false_e;
+#endif
+    amd_kernel_query_target_support_f query_target_support_f = query_target_support;
+
+    if (kernel) {
+        STATUS_ERROR_CHECK(vxSetKernelAttribute(kernel, VX_KERNEL_ATTRIBUTE_AMD_QUERY_TARGET_SUPPORT, &query_target_support_f, sizeof(query_target_support_f)));
+        PARAM_ERROR_CHECK(vxAddParameterToKernel(kernel, 0, VX_INPUT, VX_TYPE_TENSOR, VX_PARAMETER_STATE_REQUIRED));
+        PARAM_ERROR_CHECK(vxAddParameterToKernel(kernel, 1, VX_OUTPUT, VX_TYPE_TENSOR, VX_PARAMETER_STATE_REQUIRED));
+        PARAM_ERROR_CHECK(vxAddParameterToKernel(kernel, 2, VX_INPUT, VX_TYPE_TENSOR, VX_PARAMETER_STATE_REQUIRED));
+        PARAM_ERROR_CHECK(vxAddParameterToKernel(kernel, 3, VX_INPUT, VX_TYPE_SCALAR, VX_PARAMETER_STATE_REQUIRED));
+        PARAM_ERROR_CHECK(vxFinalizeKernel(kernel));
+    }
+    if (status != VX_SUCCESS) {
+    exit:
+        vxRemoveKernel(kernel);
+        return VX_FAILURE;
+    }
+
+    return status;
+}