mirror of
https://github.com/jellyfin/jellyfin-ffmpeg.git
synced 2024-11-27 08:00:32 +00:00
159 lines
6.3 KiB
C
159 lines
6.3 KiB
C
/*
|
|
* 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 "config.h"
|
|
|
|
#if CONFIG_LINUX_PERF
|
|
# ifndef _GNU_SOURCE
|
|
# define _GNU_SOURCE
|
|
# endif
|
|
# include <unistd.h> // read(3)
|
|
# include <sys/ioctl.h>
|
|
# include <asm/unistd.h>
|
|
# include <linux/perf_event.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <inttypes.h>
|
|
|
|
#if CONFIG_MACOS_KPERF
|
|
#include "macos_kperf.h"
|
|
#elif HAVE_MACH_ABSOLUTE_TIME
|
|
#include <mach/mach_time.h>
|
|
#endif
|
|
|
|
#include "common.h"
|
|
#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_RISCV
|
|
# include "riscv/timer.h"
|
|
#elif ARCH_X86
|
|
# include "x86/timer.h"
|
|
#elif ARCH_LOONGARCH
|
|
# include "loongarch/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
|
|
|
|
#define TIMER_REPORT(id, tdiff) \
|
|
{ \
|
|
static uint64_t tsum = 0; \
|
|
static int tcount = 0; \
|
|
static int tskip_count = 0; \
|
|
static int thistogram[32] = {0}; \
|
|
thistogram[av_log2(tdiff)]++; \
|
|
if (tcount < 2 || \
|
|
(tdiff) < 8 * tsum / tcount || \
|
|
(tdiff) < 2000) { \
|
|
tsum += (tdiff); \
|
|
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"); \
|
|
} \
|
|
}
|
|
|
|
#if CONFIG_LINUX_PERF
|
|
|
|
#define START_TIMER \
|
|
static int linux_perf_fd = -1; \
|
|
uint64_t tperf; \
|
|
if (linux_perf_fd == -1) { \
|
|
struct perf_event_attr attr = { \
|
|
.type = PERF_TYPE_HARDWARE, \
|
|
.size = sizeof(struct perf_event_attr), \
|
|
.config = PERF_COUNT_HW_CPU_CYCLES, \
|
|
.disabled = 1, \
|
|
.exclude_kernel = 1, \
|
|
.exclude_hv = 1, \
|
|
}; \
|
|
linux_perf_fd = syscall(__NR_perf_event_open, &attr, \
|
|
0, -1, -1, 0); \
|
|
} \
|
|
if (linux_perf_fd == -1) { \
|
|
av_log(NULL, AV_LOG_ERROR, "perf_event_open failed: %s\n", \
|
|
av_err2str(AVERROR(errno))); \
|
|
} else { \
|
|
ioctl(linux_perf_fd, PERF_EVENT_IOC_RESET, 0); \
|
|
ioctl(linux_perf_fd, PERF_EVENT_IOC_ENABLE, 0); \
|
|
}
|
|
|
|
#define STOP_TIMER(id) \
|
|
ioctl(linux_perf_fd, PERF_EVENT_IOC_DISABLE, 0); \
|
|
read(linux_perf_fd, &tperf, sizeof(tperf)); \
|
|
TIMER_REPORT(id, tperf)
|
|
|
|
#elif CONFIG_MACOS_KPERF
|
|
|
|
#define START_TIMER \
|
|
uint64_t tperf; \
|
|
ff_kperf_init(); \
|
|
tperf = ff_kperf_cycles();
|
|
|
|
#define STOP_TIMER(id) \
|
|
TIMER_REPORT(id, ff_kperf_cycles() - tperf);
|
|
|
|
#elif defined(AV_READ_TIME)
|
|
#define START_TIMER \
|
|
uint64_t tend; \
|
|
uint64_t tstart = AV_READ_TIME(); \
|
|
|
|
#define STOP_TIMER(id) \
|
|
tend = AV_READ_TIME(); \
|
|
TIMER_REPORT(id, tend - tstart)
|
|
#else
|
|
#define START_TIMER
|
|
#define STOP_TIMER(id) { }
|
|
#endif
|
|
|
|
#endif /* AVUTIL_TIMER_H */
|