1 files changed, 109 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_ports/vpx_timer.h b/media/libvpx/libvpx/vpx_ports/vpx_timer.h
new file mode 100644
index 0000000000..4934d5296a
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_ports/vpx_timer.h
@@ -0,0 +1,109 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VPX_VPX_PORTS_VPX_TIMER_H_
+#define VPX_VPX_PORTS_VPX_TIMER_H_
+
+#include "./vpx_config.h"
+
+#include "vpx/vpx_integer.h"
+
+#if CONFIG_OS_SUPPORT
+
+#if defined(_WIN32)
+/*
+ * Win32 specific includes
+ */
+#undef NOMINMAX
+#define NOMINMAX
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#else
+/*
+ * POSIX specific includes
+ */
+#include <sys/time.h>
+
+/* timersub is not provided by msys at this time. */
+#ifndef timersub
+#define timersub(a, b, result)                       \
+  do {                                               \
+    (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;    \
+    (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
+    if ((result)->tv_usec < 0) {                     \
+      --(result)->tv_sec;                            \
+      (result)->tv_usec += 1000000;                  \
+    }                                                \
+  } while (0)
+#endif
+#endif
+
+struct vpx_usec_timer {
+#if defined(_WIN32)
+  LARGE_INTEGER begin, end;
+#else
+  struct timeval begin, end;
+#endif
+};
+
+static INLINE void vpx_usec_timer_start(struct vpx_usec_timer *t) {
+#if defined(_WIN32)
+  QueryPerformanceCounter(&t->begin);
+#else
+  gettimeofday(&t->begin, NULL);
+#endif
+}
+
+static INLINE void vpx_usec_timer_mark(struct vpx_usec_timer *t) {
+#if defined(_WIN32)
+  QueryPerformanceCounter(&t->end);
+#else
+  gettimeofday(&t->end, NULL);
+#endif
+}
+
+static INLINE int64_t vpx_usec_timer_elapsed(struct vpx_usec_timer *t) {
+#if defined(_WIN32)
+  LARGE_INTEGER freq, diff;
+
+  diff.QuadPart = t->end.QuadPart - t->begin.QuadPart;
+
+  QueryPerformanceFrequency(&freq);
+  return diff.QuadPart * 1000000 / freq.QuadPart;
+#else
+  struct timeval diff;
+
+  timersub(&t->end, &t->begin, &diff);
+  return (int64_t)diff.tv_sec * 1000000 + diff.tv_usec;
+#endif
+}
+
+#else /* CONFIG_OS_SUPPORT = 0*/
+
+/* Empty timer functions if CONFIG_OS_SUPPORT = 0 */
+#ifndef timersub
+#define timersub(a, b, result)
+#endif
+
+struct vpx_usec_timer {
+  void *dummy;
+};
+
+static INLINE void vpx_usec_timer_start(struct vpx_usec_timer *t) {}
+
+static INLINE void vpx_usec_timer_mark(struct vpx_usec_timer *t) {}
+
+static INLINE int vpx_usec_timer_elapsed(struct vpx_usec_timer *t) { return 0; }
+
+#endif /* CONFIG_OS_SUPPORT */
+
+#endif  // VPX_VPX_PORTS_VPX_TIMER_H_