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avfilter/allfilters: make avfilter_register_all thread safe

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use ff_thread_once

Suggested-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
This commit is contained in:
Muhammad Faiz
2017-03-07 15:54:44 +07:00
parent 49635f0a46
commit af7010ad05
1 changed files with 9 additions and 7 deletions
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16
libavfilter/allfilters.c
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@@ -19,6 +19,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/thread.h"
#include "avfilter.h"
#include "config.h"
#include "opencl_allkernels.h"
@@ -37,14 +38,8 @@
avfilter_register(&ff_##x); \
}
void avfilter_register_all(void)
static void register_all(void)
{
static int initialized;
if (initialized)
return;
initialized = 1;
REGISTER_FILTER(ABENCH, abench, af);
REGISTER_FILTER(ACOMPRESSOR, acompressor, af);
REGISTER_FILTER(ACROSSFADE, acrossfade, af);
@@ -380,3 +375,10 @@ void avfilter_register_all(void)
REGISTER_FILTER_UNCONDITIONAL(vf_fifo);
ff_opencl_register_filter_kernel_code_all();
}
void avfilter_register_all(void)
{
AVOnce control = AV_ONCE_INIT;
ff_thread_once(&control, register_all);
}