vx_tutorial_graph_user_kernel.c

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#include <stdio.h>
#include <VX/vx.h>
#include <TI/tivx.h>
#include <utility.h>
#include <ch03_graph/phase_rgb_user_kernel.h>

#define IN_FILE_NAME      "${VX_TEST_DATA_PATH}/vx_tutorial_graph_image_gradients_phase_out.bmp"

#define OUT_USER_KERNEL_FILE_NAME   "${VX_TEST_DATA_PATH}/vx_tutorial_graph_user_kernel_out.bmp"

#define OUT_TARGET_KERNEL_FILE_NAME "${VX_TEST_DATA_PATH}/vx_tutorial_graph_target_kernel_out.bmp"

void vx_tutorial_graph_user_kernel(vx_bool add_as_target_kernel)
{
    vx_context context;
    vx_image in_image = NULL;
    vx_image out_image = NULL;
    vx_node node = NULL;
    vx_graph graph = NULL;
    vx_uint32 width, height;
    vx_status status;

    char *out_file = OUT_USER_KERNEL_FILE_NAME;

    if(add_as_target_kernel)
    {
        out_file = OUT_TARGET_KERNEL_FILE_NAME;
    }
    printf(" vx_tutorial_graph_user_kernel: Tutorial Started !!! \n");

    context = vxCreateContext();
    status = phase_rgb_user_kernel_add(context, add_as_target_kernel);
    if(status!=(vx_status)VX_SUCCESS)
    {
        printf(" vx_tutorial_graph_user_kernel: ERROR: unable to add user kernel !!!\n");
    }
    if(status==(vx_status)VX_SUCCESS)
    {
        printf(" Loading file %s ...\n", IN_FILE_NAME);

        in_image = tivx_utils_create_vximage_from_bmpfile(context, IN_FILE_NAME, (vx_bool)vx_true_e);
        vxSetReferenceName((vx_reference)in_image, "INPUT");
        show_image_attributes(in_image);

        vxQueryImage(in_image, (vx_enum)VX_IMAGE_WIDTH, &width, sizeof(vx_uint32));
        vxQueryImage(in_image, (vx_enum)VX_IMAGE_HEIGHT, &height, sizeof(vx_uint32));
        out_image = vxCreateImage(context, width, height, (vx_df_image)VX_DF_IMAGE_RGB);
        vxSetReferenceName((vx_reference)out_image, "OUTPUT");
        show_image_attributes(out_image);
        graph = vxCreateGraph(context);
        node = phase_rgb_user_kernel_node(graph, in_image, out_image);
        status = vxVerifyGraph(graph);

        show_graph_attributes(graph);
        show_node_attributes(node);
        tivxExportGraphToDot(graph, ".", "vx_tutorial_graph_user_kernel");
        if(status==(vx_status)VX_SUCCESS)
        {
            printf(" Executing graph ...\n");

            vxScheduleGraph(graph);
            vxWaitGraph(graph);

            printf(" Executing graph ... Done !!!\n");

            show_graph_attributes(graph);
            show_node_attributes(node);

            printf(" Saving to file %s ...\n", out_file);
            tivx_utils_save_vximage_to_bmpfile(out_file, out_image);
        }
        vxReleaseImage(&in_image);
        vxReleaseImage(&out_image);
        vxReleaseNode(&node);
        vxReleaseGraph(&graph);
        phase_rgb_user_kernel_remove(context);
    }
    vxReleaseContext(&context);
    printf(" vx_tutorial_graph_user_kernel: Tutorial Done !!! \n");
    printf(" \n");
}