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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /media/ffvpx/libavutil/timer.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'media/ffvpx/libavutil/timer.h')
-rw-r--r--media/ffvpx/libavutil/timer.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/timer.h b/media/ffvpx/libavutil/timer.h
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+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * high precision timer, useful to profile code
+ */
+
+#ifndef AVUTIL_TIMER_H
+#define AVUTIL_TIMER_H
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#include "config.h"
+
+#if HAVE_MACH_MACH_TIME_H
+#include <mach/mach_time.h>
+#endif
+
+#include "log.h"
+
+#if ARCH_AARCH64
+# include "aarch64/timer.h"
+#elif ARCH_ARM
+# include "arm/timer.h"
+#elif ARCH_PPC
+# include "ppc/timer.h"
+#elif ARCH_X86
+# include "x86/timer.h"
+#endif
+
+#if !defined(AV_READ_TIME)
+# if HAVE_GETHRTIME
+# define AV_READ_TIME gethrtime
+# elif HAVE_MACH_ABSOLUTE_TIME
+# define AV_READ_TIME mach_absolute_time
+# endif
+#endif
+
+#ifndef FF_TIMER_UNITS
+# define FF_TIMER_UNITS "UNITS"
+#endif
+
+#ifdef AV_READ_TIME
+#define START_TIMER \
+ uint64_t tend; \
+ uint64_t tstart = AV_READ_TIME(); \
+
+#define STOP_TIMER(id) \
+ tend = AV_READ_TIME(); \
+ { \
+ static uint64_t tsum = 0; \
+ static int tcount = 0; \
+ static int tskip_count = 0; \
+ static int thistogram[32] = {0}; \
+ thistogram[av_log2(tend - tstart)]++; \
+ if (tcount < 2 || \
+ tend - tstart < 8 * tsum / tcount || \
+ tend - tstart < 2000) { \
+ tsum+= tend - tstart; \
+ tcount++; \
+ } else \
+ tskip_count++; \
+ if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \
+ int i; \
+ av_log(NULL, AV_LOG_ERROR, \
+ "%7"PRIu64" " FF_TIMER_UNITS " in %s,%8d runs,%7d skips", \
+ tsum * 10 / tcount, id, tcount, tskip_count); \
+ for (i = 0; i < 32; i++) \
+ av_log(NULL, AV_LOG_VERBOSE, " %2d", av_log2(2*thistogram[i]));\
+ av_log(NULL, AV_LOG_ERROR, "\n"); \
+ } \
+ }
+#else
+#define START_TIMER
+#define STOP_TIMER(id) { }
+#endif
+
+#endif /* AVUTIL_TIMER_H */