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avcodec/4xm: Make decoder init-threadsafe

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-30 18:04:51 +01:00 committed by Andreas Rheinhardt
parent c13b3fdb19
commit 2648df16c6
1 changed files with 6 additions and 2 deletions
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8
libavcodec/4xm.c
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@ -31,6 +31,7 @@
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem_internal.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "bswapdsp.h"
@ -246,7 +247,7 @@ static void idct(int16_t block[64])
}
}
static av_cold void init_vlcs(FourXContext *f)
static av_cold void init_vlcs(void)
{
static VLC_TYPE table[2][4][32][2];
int i, j;
@ -988,6 +989,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
static av_cold int decode_init(AVCodecContext *avctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
FourXContext * const f = avctx->priv_data;
int ret;
@ -1015,13 +1017,14 @@ static av_cold int decode_init(AVCodecContext *avctx)
ff_blockdsp_init(&f->bdsp, avctx);
ff_bswapdsp_init(&f->bbdsp);
f->avctx = avctx;
init_vlcs(f);
if (f->version > 2)
avctx->pix_fmt = AV_PIX_FMT_RGB565;
else
avctx->pix_fmt = AV_PIX_FMT_BGR555;
ff_thread_once(&init_static_once, init_vlcs);
return 0;
}
@ -1035,4 +1038,5 @@ const AVCodec ff_fourxm_decoder = {
.close = decode_end,
.decode = decode_frame,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};