Add test for avpriv_get_trc_function_from_trc function

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavutil/color_utils.c

@@ -21,6 +21,7 @@
 #include <stddef.h>
 #include <math.h>
 
+#include "common.h"
 #include "libavutil/color_utils.h"
 #include "libavutil/pixfmt.h"
 
@@ -216,3 +217,31 @@ avpriv_trc_function avpriv_get_trc_function_from_trc(enum AVColorTransferCharact
     }
     return func;
 }
+
+#ifdef TEST
+// LCOV_EXCL_START
+
+int main(int argc, char *argv[])
+{
+  int i, j;
+  double test_data[] = {
+      -0.1, -0.018053968510807, -0.01, -0.00449, 0.0, 0.00316227760, 0.005,
+      0.009, 0.015, 0.1, 1.0, 52.37, 125.098765, 1999.11123, 6945.443,
+      15123.4567, 19845.88923, 98678.4231, 99999.899998
+  };
+
+  for(i = 0; i < AVCOL_TRC_NB; i++) {
+      avpriv_trc_function func = avpriv_get_trc_function_from_trc(i);
+      for(j = 0; j < FF_ARRAY_ELEMS(test_data); j++) {
+          if(func != NULL) {
+              double result = func(test_data[j]);
+              printf("AVColorTransferCharacteristic=%d calling func(%f) expected=%f\n",
+                     i, test_data[j], result);
+          }
+      }
+  }
+
+}
+
+// LCOV_EXCL_STOP
+#endif