shithub: dav1d

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API: Run dav1d_init under pthread_once

This makes the function thread safe, to call, for example,
from multiple transient dependecies or threads.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

--- a/src/lib.c

+++ b/src/lib.c

@@ -45,10 +45,16 @@

 #include "src/thread_task.h"

 #include "src/wedge.h"

-void dav1d_init(void) {

+static void init_internal(void) {

     av1_init_wedge_masks();

     av1_init_interintra_masks();

     av1_init_qm_tables();

+}

+

+static pthread_once_t initted = PTHREAD_ONCE_INIT;

+

+void dav1d_init(void) {

+    pthread_once(&initted, init_internal);

 }

 const char *dav1d_version(void) {