From 6ff3b19ee6120edf015fad8caab2991faa3070af Mon Sep 17 00:00:00 2001
From: Anthony Barbier <anthony.barbier@arm.com>
Date: Mon, 4 Sep 2017 18:44:23 +0100
Subject: COMPMID-344 Updated doxygen

Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae
---
 examples/cl_events.cpp | 114 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 examples/cl_events.cpp

(limited to 'examples/cl_events.cpp')

diff --git a/examples/cl_events.cpp b/examples/cl_events.cpp
new file mode 100644
index 0000000000..768f620622
--- /dev/null
+++ b/examples/cl_events.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+#define ARM_COMPUTE_CL /* So that OpenCL exceptions get caught too */
+#include "arm_compute/core/Types.h"
+#include "arm_compute/runtime/CL/CLFunctions.h"
+#include "arm_compute/runtime/CL/CLScheduler.h"
+#include "utils/Utils.h"
+
+using namespace arm_compute;
+using namespace utils;
+
+void main_cl_events(int argc, const char **argv)
+{
+    /** [OpenCL events] **/
+    PPMLoader     ppm;
+    CLImage       src, tmp_scale_median, tmp_median_gauss, dst;
+    constexpr int scale_factor = 2;
+
+    CLScheduler::get().default_init();
+
+    if(argc < 2)
+    {
+        // Print help
+        std::cout << "Usage: ./build/cl_events [input_image.ppm]\n\n";
+        std::cout << "No input_image provided, creating a dummy 640x480 image\n";
+        // Create an empty grayscale 640x480 image
+        src.allocator()->init(TensorInfo(640, 480, Format::U8));
+    }
+    else
+    {
+        ppm.open(argv[1]);
+        ppm.init_image(src, Format::U8);
+    }
+
+    // Declare and configure the functions to create the following pipeline: scale -> median -> gauss
+    CLScale       scale;
+    CLMedian3x3   median;
+    CLGaussian5x5 gauss;
+
+    TensorInfo dst_info(src.info()->dimension(0) / scale_factor, src.info()->dimension(1) / scale_factor, Format::U8);
+
+    // Configure the temporary and destination images
+    dst.allocator()->init(dst_info);
+    tmp_scale_median.allocator()->init(dst_info);
+    tmp_median_gauss.allocator()->init(dst_info);
+
+    //Configure the functions:
+    scale.configure(&src, &tmp_scale_median, InterpolationPolicy::NEAREST_NEIGHBOR, BorderMode::REPLICATE);
+    median.configure(&tmp_scale_median, &tmp_median_gauss, BorderMode::REPLICATE);
+    gauss.configure(&tmp_median_gauss, &dst, BorderMode::REPLICATE);
+
+    // Allocate all the images
+    src.allocator()->allocate();
+    dst.allocator()->allocate();
+    tmp_scale_median.allocator()->allocate();
+    tmp_median_gauss.allocator()->allocate();
+    // Fill the input image with the content of the PPM image if a filename was provided:
+    if(ppm.is_open())
+    {
+        ppm.fill_image(src);
+    }
+
+    // Enqueue and flush the scale OpenCL kernel:
+    scale.run();
+    // Create a synchronisation event between scale and median:
+    cl::Event scale_event = CLScheduler::get().enqueue_sync_event();
+    // Enqueue and flush the median OpenCL kernel:
+    median.run();
+    // Enqueue and flush the Gaussian OpenCL kernel:
+    gauss.run();
+
+    //Make sure all the OpenCL jobs are done executing:
+    scale_event.wait();        // Block until Scale is done executing (Median3x3 and Gaussian5x5 might still be running)
+    CLScheduler::get().sync(); // Block until Gaussian5x5 is done executing
+
+    // Save the result to file:
+    if(ppm.is_open())
+    {
+        const std::string output_filename = std::string(argv[1]) + "_out.ppm";
+        save_to_ppm(dst, output_filename); // save_to_ppm maps and unmaps the image to store as PPM
+    }
+    /** [OpenCL events] **/
+}
+
+/** Main program for convolution test
+ *
+ * @param[in] argc Number of arguments
+ * @param[in] argv Arguments ( [optional] Path to PPM image to process )
+ */
+int main(int argc, const char **argv)
+{
+    return utils::run_example(argc, argv, main_cl_events);
+}
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