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avcodec/intrax8: Make ff_intrax8_common_init() thread-safe

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In particular, don't reinitialize VLCs every time an IntraX8Context is
initialized.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-16 22:00:34 +01:00
parent 802baf212d
commit b1af617f51
1 changed files with 4 additions and 1 deletions
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5
libavcodec/intrax8.c
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@ -22,6 +22,7 @@
*/
#include "libavutil/avassert.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "get_bits.h"
#include "idctdsp.h"
@ -725,6 +726,8 @@ av_cold int ff_intrax8_common_init(AVCodecContext *avctx,
int block_last_index[12],
int mb_width, int mb_height)
{
static AVOnce init_static_once = AV_ONCE_INIT;
w->avctx = avctx;
w->idsp = *idsp;
w->mb_width = mb_width;
@ -752,7 +755,7 @@ av_cold int ff_intrax8_common_init(AVCodecContext *avctx,
ff_intrax8dsp_init(&w->dsp);
ff_blockdsp_init(&w->bdsp, avctx);
x8_vlc_init();
ff_thread_once(&init_static_once, x8_vlc_init);
return 0;
}