Initial benchmark exe

src/CMakeLists.txt

@@ -107,6 +107,7 @@ endif()
 add_executable(zmc zmc.cpp)
 add_executable(zms zms.cpp)
 add_executable(zmu zmu.cpp)
+add_executable(zmbenchmark zmbenchmark.cpp)
 
 target_link_libraries(zmc
   PRIVATE
@@ -129,6 +130,13 @@ target_link_libraries(zmu
     ${ZM_EXTRA_LIBS}
     ${CMAKE_DL_LIBS})
 
+target_link_libraries(zmbenchmark
+  PRIVATE
+    zm-core-interface
+    zm
+    ${ZM_EXTRA_LIBS}
+    ${CMAKE_DL_LIBS})
+
 # Generate man files for the binaries destined for the bin folder
 if(BUILD_MAN)
   foreach(CBINARY zmc zmu)

src/zmbenchmark.cpp

@@ -0,0 +1,76 @@
+//
+// ZoneMinder Benchmark, $Date$, $Revision$
+// Copyright (C) 2001-2008 Philip Coombes
+// 
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+// 
+
+#include <memory>
+#include <stdlib.h>
+
+#include "zm_image.h"
+#include "zm_zone.h"
+
+
+
+//
+// Generate a greyscale image that simulates a delta that can be fed to
+// Zone::CheckAlarms.
+// 
+// Args:
+//  minVal: 0-255 value telling the minimum (random) value to initialize
+//    all the pixels to.
+//  maxVal: 0-255 value telling the maximum (random) value to initialize
+//    all the pixels to.
+//  width: The width of the new image.
+//  height: The height of the new image.
+//   
+//  Return:
+//    An image with all pixels initialized to values in the [minVal,maxVal] range.
+//
+std::shared_ptr<Image> GenerateDeltaImage(
+    int minVal,
+    int maxVal,
+    int width = 3840,
+    int height = 2160) {
+  // Create the image.
+  Image *image = new Image(
+    width,
+    height,
+    ZM_COLOUR_GRAY8,
+    ZM_SUBPIX_ORDER_NONE);
+
+  const int range = maxVal - minVal + 1;
+  for (int y=0; y < height; y++)
+  {
+    uint8_t *row = (uint8_t*)image->Buffer(0, y);
+    for (int x=0; x < width; x++)
+      row[x] = (rand() * range) / RAND_MAX + minVal;
+  }
+
+  return image;
+}
+
+
+int main(int argc, char *argv[]) {
+  srand(111);
+
+  RunZoneBenchmark("0%% delta", GenerateDeltaImage(0, 0));
+  RunZoneBenchmark("50%% delta", GenerateDeltaImage(0, 255));
+  RunZoneBenchmark("100%% delta", GenerateDeltaImage(255, 255));
+
+  return 0;
+}
+