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avcodec/parser: Make av_register_codec_parser() thread safe
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -23,6 +23,7 @@
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#include <string.h>
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#include "parser.h"
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#include "libavutil/atomic.h"
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#include "libavutil/mem.h"
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static AVCodecParser *av_first_parser = NULL;
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@ -34,8 +35,9 @@ AVCodecParser* av_parser_next(AVCodecParser *p){
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void av_register_codec_parser(AVCodecParser *parser)
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{
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parser->next = av_first_parser;
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av_first_parser = parser;
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do {
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parser->next = av_first_parser;
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} while (parser->next != avpriv_atomic_ptr_cas((void * volatile *)&av_first_parser, parser->next, parser));
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}
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AVCodecParserContext *av_parser_init(int codec_id)
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