f244cbd5
 Hu Chunming
ffmpeg支持h264编码
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/*****************************************************************************
* osdep.c: platform-specific code
*****************************************************************************
* Copyright (C) 2003-2024 x264 project
*
* Authors: Steven Walters <kemuri9@gmail.com>
* Laurent Aimar <fenrir@via.ecp.fr>
* Henrik Gramner <henrik@gramner.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#include "osdep.h"
#if SYS_WINDOWS
#include <sys/types.h>
#include <sys/timeb.h>
#else
#include <sys/time.h>
#endif
#include <time.h>
#if PTW32_STATIC_LIB
/* this is a global in pthread-win32 to indicate if it has been initialized or not */
extern int ptw32_processInitialized;
#endif
int64_t x264_mdate( void )
{
#if SYS_WINDOWS
struct timeb tb;
ftime( &tb );
return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
#elif HAVE_CLOCK_GETTIME
struct timespec ts;
clock_gettime( CLOCK_MONOTONIC, &ts );
return (int64_t)ts.tv_sec * 1000000 + (int64_t)ts.tv_nsec / 1000;
#else
struct timeval tv_date;
gettimeofday( &tv_date, NULL );
return (int64_t)tv_date.tv_sec * 1000000 + (int64_t)tv_date.tv_usec;
#endif
}
#if HAVE_WIN32THREAD || PTW32_STATIC_LIB
/* state of the threading library being initialized */
static volatile LONG threading_is_init = 0;
static void threading_destroy( void )
{
#if PTW32_STATIC_LIB
pthread_win32_thread_detach_np();
pthread_win32_process_detach_np();
#else
x264_win32_threading_destroy();
#endif
}
static int threading_init( void )
{
#if PTW32_STATIC_LIB
/* if static pthread-win32 is already initialized, then do nothing */
if( ptw32_processInitialized )
return 0;
if( !pthread_win32_process_attach_np() )
return -1;
#else
if( x264_win32_threading_init() )
return -1;
#endif
/* register cleanup to run at process termination */
atexit( threading_destroy );
return 0;
}
int x264_threading_init( void )
{
LONG state;
while( (state = InterlockedCompareExchange( &threading_is_init, -1, 0 )) != 0 )
{
/* if already init, then do nothing */
if( state > 0 )
return 0;
}
if( threading_init() < 0 )
{
InterlockedExchange( &threading_is_init, 0 );
return -1;
}
InterlockedExchange( &threading_is_init, 1 );
return 0;
}
#endif
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