mirror of
https://github.com/webmproject/libwebp.git
synced 2024-11-20 12:28:26 +01:00
c7e89cbb02
rather than symlink the webm/vpx terms, use the same header as libvpx to
reference in-tree files
based on the discussion in:
https://codereview.chromium.org/12771026/
Change-Id: Ia3067ecddefaa7ee01550136e00f7b3f086d4af4
(cherry picked from commit d640614d54)
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
// Copyright 2011 Google Inc. All Rights Reserved.
|
|
//
|
|
// Use of this source code is governed by a BSD-style license
|
|
// that can be found in the COPYING 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.
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// Helper functions to measure elapsed time.
|
|
//
|
|
// Author: Mikolaj Zalewski (mikolajz@google.com)
|
|
|
|
#ifndef WEBP_EXAMPLES_STOPWATCH_H_
|
|
#define WEBP_EXAMPLES_STOPWATCH_H_
|
|
|
|
#if defined _WIN32 && !defined __GNUC__
|
|
#include <windows.h>
|
|
|
|
typedef LARGE_INTEGER Stopwatch;
|
|
|
|
static WEBP_INLINE double StopwatchReadAndReset(Stopwatch* watch) {
|
|
const LARGE_INTEGER old_value = *watch;
|
|
LARGE_INTEGER freq;
|
|
if (!QueryPerformanceCounter(watch))
|
|
return 0.0;
|
|
if (!QueryPerformanceFrequency(&freq))
|
|
return 0.0;
|
|
if (freq.QuadPart == 0)
|
|
return 0.0;
|
|
return (watch->QuadPart - old_value.QuadPart) / (double)freq.QuadPart;
|
|
}
|
|
|
|
|
|
#else /* !_WIN32 */
|
|
#include <sys/time.h>
|
|
|
|
typedef struct timeval Stopwatch;
|
|
|
|
static WEBP_INLINE double StopwatchReadAndReset(Stopwatch* watch) {
|
|
const struct timeval old_value = *watch;
|
|
gettimeofday(watch, NULL);
|
|
return watch->tv_sec - old_value.tv_sec +
|
|
(watch->tv_usec - old_value.tv_usec) / 1000000.0;
|
|
}
|
|
|
|
#endif /* _WIN32 */
|
|
|
|
#endif /* WEBP_EXAMPLES_STOPWATCH_H_ */
|