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ffmpeg.wasm-core
Commit b36b5edb authored by Michael Niedermayer's avatar Michael Niedermayer
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avcodec/bitstream_filter: make av_register_bitstream_filter() thread safe 

Signed-off-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parent 08f6fdc3
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Showing with 4 additions and 2 deletions
libavcodec/bitstream_filter.c
View file @ b36b5edb
...@@ -21,6 +21,7 @@ ...@@ -21,6 +21,7 @@
#include <string.h> #include <string.h>
#include "avcodec.h" #include "avcodec.h"
#include "libavutil/atomic.h"
#include "libavutil/mem.h" #include "libavutil/mem.h"
static AVBitStreamFilter *first_bitstream_filter= NULL; static AVBitStreamFilter *first_bitstream_filter= NULL;
...@@ -31,8 +32,9 @@ AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){ ...@@ -31,8 +32,9 @@ AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){
} }
void av_register_bitstream_filter(AVBitStreamFilter *bsf){ void av_register_bitstream_filter(AVBitStreamFilter *bsf){
do {
bsf->next = first_bitstream_filter; bsf->next = first_bitstream_filter;
first_bitstream_filter= bsf; } while(bsf->next != avpriv_atomic_ptr_cas((void * volatile *)&first_bitstream_filter, bsf->next, bsf));
} }
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name){ AVBitStreamFilterContext *av_bitstream_filter_init(const char *name){
......
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