1 files changed, 139 insertions, 0 deletions
diff --git a/intern/cycles/util/time.cpp b/intern/cycles/util/time.cpp
new file mode 100644
index 00000000000..62d14b063be
--- /dev/null
+++ b/intern/cycles/util/time.cpp
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2011-2013 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "util/time.h"
+
+#include <stdlib.h>
+
+#if !defined(_WIN32)
+#  include <sys/time.h>
+#  include <unistd.h>
+#endif
+
+#include "util/math.h"
+#include "util/string.h"
+#include "util/windows.h"
+
+CCL_NAMESPACE_BEGIN
+
+#ifdef _WIN32
+double time_dt()
+{
+  __int64 frequency, counter;
+
+  QueryPerformanceFrequency((LARGE_INTEGER *)&frequency);
+  QueryPerformanceCounter((LARGE_INTEGER *)&counter);
+
+  return (double)counter / (double)frequency;
+}
+
+void time_sleep(double t)
+{
+  Sleep((int)(t * 1000));
+}
+#else
+double time_dt()
+{
+  struct timeval now;
+  gettimeofday(&now, NULL);
+
+  return now.tv_sec + now.tv_usec * 1e-6;
+}
+
+/* sleep t seconds */
+void time_sleep(double t)
+{
+  /* get whole seconds */
+  int s = (int)t;
+
+  if (s >= 1) {
+    sleep(s);
+
+    /* adjust parameter to remove whole seconds */
+    t -= s;
+  }
+
+  /* get microseconds */
+  int us = (int)(t * 1e6);
+  if (us > 0)
+    usleep(us);
+}
+#endif
+
+/* Time in format "hours:minutes:seconds.hundreds" */
+
+string time_human_readable_from_seconds(const double seconds)
+{
+  const int h = (((int)seconds) / (60 * 60));
+  const int m = (((int)seconds) / 60) % 60;
+  const int s = (((int)seconds) % 60);
+  const int r = (((int)(seconds * 100)) % 100);
+
+  if (h > 0) {
+    return string_printf("%.2d:%.2d:%.2d.%.2d", h, m, s, r);
+  }
+  else {
+    return string_printf("%.2d:%.2d.%.2d", m, s, r);
+  }
+}
+
+double time_human_readable_to_seconds(const string &time_string)
+{
+  /* Those are multiplies of a corresponding token surrounded by : in the
+   * time string, which denotes how to convert value to seconds.
+   * Effectively: seconds, minutes, hours, days in seconds. */
+  const int multipliers[] = {1, 60, 60 * 60, 24 * 60 * 60};
+  const int num_multiplies = sizeof(multipliers) / sizeof(*multipliers);
+  if (time_string.empty()) {
+    return 0.0;
+  }
+  double result = 0.0;
+  /* Split fractions of a second from the encoded time. */
+  vector<string> fraction_tokens;
+  string_split(fraction_tokens, time_string, ".", false);
+  const int num_fraction_tokens = fraction_tokens.size();
+  if (num_fraction_tokens == 0) {
+    /* Time string is malformed. */
+    return 0.0;
+  }
+  else if (fraction_tokens.size() == 1) {
+    /* There is no fraction of a second specified, the rest of the code
+     * handles this normally. */
+  }
+  else if (fraction_tokens.size() == 2) {
+    result = atof(fraction_tokens[1].c_str());
+    result *= pow(0.1, fraction_tokens[1].length());
+  }
+  else {
+    /* This is not a valid string, the result can not be reliable. */
+    return 0.0;
+  }
+  /* Split hours, minutes and seconds.
+   * Hours part is optional. */
+  vector<string> tokens;
+  string_split(tokens, fraction_tokens[0], ":", false);
+  const int num_tokens = tokens.size();
+  if (num_tokens > num_multiplies) {
+    /* Can not reliably represent the value. */
+    return 0.0;
+  }
+  for (int i = 0; i < num_tokens; ++i) {
+    result += atoi(tokens[num_tokens - i - 1].c_str()) * multipliers[i];
+  }
+  return result;
+}
+
+CCL_NAMESPACE_END