add gflags support files from webrtc

files needed for command line support with gtest.
These files are copied directly from webrtc.

TBR=kjellander@chromium.org
BUG=libyuv:507

Review URL: https://codereview.chromium.org/1414483002 .

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1513
+Version: 1514
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 1513
+#define LIBYUV_VERSION 1514
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

libyuv_test.gyp

@@ -18,6 +18,15 @@
       'dependencies': [
         'libyuv.gyp:libyuv',
         'testing/gtest.gyp:gtest',
+        'third_party/gflags/gflags.gyp:gflags',
+      ],
+      'direct_dependent_settings': {
+        'defines': [
+          'GTEST_RELATIVE_PATH',
+        ],
+      },
+      'export_dependent_settings': [
+        '<(DEPTH)/testing/gtest.gyp:gtest',
       ],
       'defines': [
         # Enable the following 3 macros to turn off assembly for specified CPU.

unit_test/unit_test.cc

@@ -14,37 +14,59 @@
 
 #include <cstring>
 
+#include "gflags/gflags.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
 // Change this to 1000 for benchmarking.
 // TODO(fbarchard): Add command line parsing to pass this as option.
 #define BENCHMARK_ITERATIONS 1
 
 int fastrand_seed = 0xfb;
 
+DEFINE_int32(libyuv_width, 0, "width of test image.");
+DEFINE_int32(libyuv_height, 0, "height of test image.");
+DEFINE_int32(libyuv_repeat, 0, "number of times to repeat test.");
+DEFINE_int32(libyuv_flags, 0, "cpu flags for reference code. 0 = C -1 = asm");
+
+// For quicker unittests, default is 128 x 72.  But when benchmarking,
+// default to 720p.  Allow size to specify.
+// Set flags to -1 for benchmarking to avoid slower C code.
+
 LibYUVConvertTest::LibYUVConvertTest() :
     benchmark_iterations_(BENCHMARK_ITERATIONS), benchmark_width_(128),
     benchmark_height_(72), disable_cpu_flags_(0) {
   const char* repeat = getenv("LIBYUV_REPEAT");
   if (repeat) {
     benchmark_iterations_ = atoi(repeat);  // NOLINT
-      // For quicker unittests, default is 128 x 72.  But when benchmarking,
-      // default to 720p.  Allow size to specify.
+  }
+  if (FLAGS_libyuv_repeat) {
+    benchmark_iterations_ = FLAGS_libyuv_repeat;
+  }
   if (benchmark_iterations_ > 1) {
     benchmark_width_ = 1280;
     benchmark_height_ = 720;
   }
-    }
   const char* width = getenv("LIBYUV_WIDTH");
   if (width) {
     benchmark_width_ = atoi(width);  // NOLINT
   }
+  if (FLAGS_libyuv_width) {
+    benchmark_width_ = FLAGS_libyuv_width;
+  }
   const char* height = getenv("LIBYUV_HEIGHT");
   if (height) {
     benchmark_height_ = atoi(height);  // NOLINT
   }
+  if (FLAGS_libyuv_height) {
+    benchmark_height_ = FLAGS_libyuv_height;
+  }
   const char* cpu_flags = getenv("LIBYUV_FLAGS");
   if (cpu_flags) {
     disable_cpu_flags_ = atoi(cpu_flags);  // NOLINT
   }
+  if (FLAGS_libyuv_flags) {
+    disable_cpu_flags_ = FLAGS_libyuv_flags;
+  }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
       static_cast<double>(Abs(benchmark_height_)) *
@@ -61,25 +83,35 @@ LibYUVColorTest::LibYUVColorTest() :
   const char* repeat = getenv("LIBYUV_REPEAT");
   if (repeat) {
     benchmark_iterations_ = atoi(repeat);  // NOLINT
-      // For quicker unittests, default is 128 x 72.  But when benchmarking,
-      // default to 720p.  Allow size to specify.
+  }
+  if (FLAGS_libyuv_repeat) {
+    benchmark_iterations_ = FLAGS_libyuv_repeat;
+  }
   if (benchmark_iterations_ > 1) {
     benchmark_width_ = 1280;
     benchmark_height_ = 720;
   }
-    }
   const char* width = getenv("LIBYUV_WIDTH");
   if (width) {
     benchmark_width_ = atoi(width);  // NOLINT
   }
+  if (FLAGS_libyuv_width) {
+    benchmark_width_ = FLAGS_libyuv_width;
+  }
   const char* height = getenv("LIBYUV_HEIGHT");
   if (height) {
     benchmark_height_ = atoi(height);  // NOLINT
   }
+  if (FLAGS_libyuv_height) {
+    benchmark_height_ = FLAGS_libyuv_height;
+  }
   const char* cpu_flags = getenv("LIBYUV_FLAGS");
   if (cpu_flags) {
     disable_cpu_flags_ = atoi(cpu_flags);  // NOLINT
   }
+  if (FLAGS_libyuv_flags) {
+    disable_cpu_flags_ = FLAGS_libyuv_flags;
+  }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
       static_cast<double>(Abs(benchmark_height_)) *
@@ -96,25 +128,35 @@ LibYUVScaleTest::LibYUVScaleTest() :
   const char* repeat = getenv("LIBYUV_REPEAT");
   if (repeat) {
     benchmark_iterations_ = atoi(repeat);  // NOLINT
-      // For quicker unittests, default is 128 x 72.  But when benchmarking,
-      // default to 720p.  Allow size to specify.
+  }
+  if (FLAGS_libyuv_repeat) {
+    benchmark_iterations_ = FLAGS_libyuv_repeat;
+  }
   if (benchmark_iterations_ > 1) {
     benchmark_width_ = 1280;
     benchmark_height_ = 720;
   }
-    }
   const char* width = getenv("LIBYUV_WIDTH");
   if (width) {
     benchmark_width_ = atoi(width);  // NOLINT
   }
+  if (FLAGS_libyuv_width) {
+    benchmark_width_ = FLAGS_libyuv_width;
+  }
   const char* height = getenv("LIBYUV_HEIGHT");
   if (height) {
     benchmark_height_ = atoi(height);  // NOLINT
   }
+  if (FLAGS_libyuv_height) {
+    benchmark_height_ = FLAGS_libyuv_height;
+  }
   const char* cpu_flags = getenv("LIBYUV_FLAGS");
   if (cpu_flags) {
     disable_cpu_flags_ = atoi(cpu_flags);  // NOLINT
   }
+  if (FLAGS_libyuv_flags) {
+    disable_cpu_flags_ = FLAGS_libyuv_flags;
+  }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
       static_cast<double>(Abs(benchmark_height_)) *
@@ -131,25 +173,35 @@ LibYUVRotateTest::LibYUVRotateTest() :
   const char* repeat = getenv("LIBYUV_REPEAT");
   if (repeat) {
     benchmark_iterations_ = atoi(repeat);  // NOLINT
-      // For quicker unittests, default is 128 x 72.  But when benchmarking,
-      // default to 720p.  Allow size to specify.
+  }
+  if (FLAGS_libyuv_repeat) {
+    benchmark_iterations_ = FLAGS_libyuv_repeat;
+  }
   if (benchmark_iterations_ > 1) {
     benchmark_width_ = 1280;
     benchmark_height_ = 720;
   }
-    }
   const char* width = getenv("LIBYUV_WIDTH");
   if (width) {
     benchmark_width_ = atoi(width);  // NOLINT
   }
+  if (FLAGS_libyuv_width) {
+    benchmark_width_ = FLAGS_libyuv_width;
+  }
   const char* height = getenv("LIBYUV_HEIGHT");
   if (height) {
     benchmark_height_ = atoi(height);  // NOLINT
   }
+  if (FLAGS_libyuv_height) {
+    benchmark_height_ = FLAGS_libyuv_height;
+  }
   const char* cpu_flags = getenv("LIBYUV_FLAGS");
   if (cpu_flags) {
     disable_cpu_flags_ = atoi(cpu_flags);  // NOLINT
   }
+  if (FLAGS_libyuv_flags) {
+    disable_cpu_flags_ = FLAGS_libyuv_flags;
+  }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
       static_cast<double>(Abs(benchmark_height_)) *
@@ -166,25 +218,35 @@ LibYUVPlanarTest::LibYUVPlanarTest() :
   const char* repeat = getenv("LIBYUV_REPEAT");
   if (repeat) {
     benchmark_iterations_ = atoi(repeat);  // NOLINT
-      // For quicker unittests, default is 128 x 72.  But when benchmarking,
-      // default to 720p.  Allow size to specify.
+  }
+  if (FLAGS_libyuv_repeat) {
+    benchmark_iterations_ = FLAGS_libyuv_repeat;
+  }
   if (benchmark_iterations_ > 1) {
     benchmark_width_ = 1280;
     benchmark_height_ = 720;
   }
-    }
   const char* width = getenv("LIBYUV_WIDTH");
   if (width) {
     benchmark_width_ = atoi(width);  // NOLINT
   }
+  if (FLAGS_libyuv_width) {
+    benchmark_width_ = FLAGS_libyuv_width;
+  }
   const char* height = getenv("LIBYUV_HEIGHT");
   if (height) {
     benchmark_height_ = atoi(height);  // NOLINT
   }
+  if (FLAGS_libyuv_height) {
+    benchmark_height_ = FLAGS_libyuv_height;
+  }
   const char* cpu_flags = getenv("LIBYUV_FLAGS");
   if (cpu_flags) {
     disable_cpu_flags_ = atoi(cpu_flags);  // NOLINT
   }
+  if (FLAGS_libyuv_flags) {
+    disable_cpu_flags_ = FLAGS_libyuv_flags;
+  }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
       static_cast<double>(Abs(benchmark_height_)) *
@@ -201,25 +263,35 @@ LibYUVBaseTest::LibYUVBaseTest() :
   const char* repeat = getenv("LIBYUV_REPEAT");
   if (repeat) {
     benchmark_iterations_ = atoi(repeat);  // NOLINT
-      // For quicker unittests, default is 128 x 72.  But when benchmarking,
-      // default to 720p.  Allow size to specify.
+  }
+  if (FLAGS_libyuv_repeat) {
+    benchmark_iterations_ = FLAGS_libyuv_repeat;
+  }
   if (benchmark_iterations_ > 1) {
     benchmark_width_ = 1280;
     benchmark_height_ = 720;
   }
-    }
   const char* width = getenv("LIBYUV_WIDTH");
   if (width) {
     benchmark_width_ = atoi(width);  // NOLINT
   }
+  if (FLAGS_libyuv_width) {
+    benchmark_width_ = FLAGS_libyuv_width;
+  }
   const char* height = getenv("LIBYUV_HEIGHT");
   if (height) {
     benchmark_height_ = atoi(height);  // NOLINT
   }
+  if (FLAGS_libyuv_height) {
+    benchmark_height_ = FLAGS_libyuv_height;
+  }
   const char* cpu_flags = getenv("LIBYUV_FLAGS");
   if (cpu_flags) {
     disable_cpu_flags_ = atoi(cpu_flags);  // NOLINT
   }
+  if (FLAGS_libyuv_flags) {
+    disable_cpu_flags_ = FLAGS_libyuv_flags;
+  }
   benchmark_pixels_div256_ = static_cast<int>((
       static_cast<double>(Abs(benchmark_width_)) *
       static_cast<double>(Abs(benchmark_height_)) *
@@ -232,5 +304,6 @@ LibYUVBaseTest::LibYUVBaseTest() :
 
 int main(int argc, char** argv) {
   ::testing::InitGoogleTest(&argc, argv);
+  google::ParseCommandLineFlags(&argc, &argv, true);
   return RUN_ALL_TESTS();
 }