Hi every one,
I followed OpenVX tutorial and at the exercise 3 I want to use vxAddUserKernel instead of vxAddKernel.
for this purpose I defined median_blur_validator function to checks input and output parameters as bellow but I got VX_ERROR_INVALID_PARAMETERS error.
what is wrong ?
vx_status VX_CALLBACK median_blur_validator(vx_node node, const vx_reference
parameters[ ], vx_uint32 index, vx_meta_format metas[])
{
if( index == 0 )
{
vx_df_image format = VX_DF_IMAGE_VIRT;
ERROR_CHECK_STATUS( vxQueryImage( ( vx_image )parameters[ index ], VX_IMAGE_ATTRIBUTE_FORMAT, &format, sizeof( format ) ) );
if( format != VX_DF_IMAGE_U8 )
{
return VX_ERROR_INVALID_FORMAT;
}
}
else if( index == 1 )
{
vx_uint32 width = 0, height = 0;
vx_image input = NULL;
vx_parameter parameter = (vx_parameter) parameters[ index ] ;
ERROR_CHECK_STATUS( vxQueryParameter( parameter, VX_PARAMETER_ATTRIBUTE_REF, &input, sizeof( input ) ) );
ERROR_CHECK_STATUS( vxReleaseParameter( ¶meter ) );
ERROR_CHECK_OBJECT( input );
ERROR_CHECK_STATUS( vxQueryImage( input, VX_IMAGE_ATTRIBUTE_WIDTH, &width, sizeof( width ) ) );
ERROR_CHECK_STATUS( vxQueryImage( input, VX_IMAGE_ATTRIBUTE_HEIGHT, &height, sizeof( height ) ) );
ERROR_CHECK_STATUS( vxReleaseImage( &input ) );
vx_df_image format = VX_DF_IMAGE_U8;
ERROR_CHECK_STATUS( vxSetMetaFormatAttribute( metas[0], VX_IMAGE_ATTRIBUTE_FORMAT, &format, sizeof( format ) ) );
ERROR_CHECK_STATUS( vxSetMetaFormatAttribute( metas[0], VX_IMAGE_ATTRIBUTE_WIDTH, &width, sizeof( width ) ) );
ERROR_CHECK_STATUS( vxSetMetaFormatAttribute( metas[0], VX_IMAGE_ATTRIBUTE_HEIGHT, &height, sizeof( height ) ) );
}
else if( index == 2 )
{
// parameters #2 -- scalar of type VX_TYPE_INT32
vx_enum type = VX_TYPE_INVALID;
ERROR_CHECK_STATUS( vxQueryScalar( ( vx_scalar )parameters[ index ], VX_SCALAR_ATTRIBUTE_TYPE, &type, sizeof( type ) ) );
// ERROR_CHECK_STATUS( vxReleaseScalar( ( vx_scalar * )&ref ) );
if( type != VX_TYPE_INT32 )
{
return VX_ERROR_INVALID_TYPE;
}
}
else
{
// invalid input parameter
return VX_ERROR_INVALID_PARAMETERS;
}
return VX_SUCCESS;
}