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Code Issues Releases Activity

avcodec/j2kenc: Make encoder init-threadsafe

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-05-07 05:08:13 +02:00
parent 3c26773ae2
commit 99ed543340
1 changed files with 5 additions and 3 deletions
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8
libavcodec/j2kenc.c
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@ -74,6 +74,7 @@
#include "libavutil/opt.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#include "libavutil/thread.h"
#define NMSEDEC_BITS 7
#define NMSEDEC_FRACBITS (NMSEDEC_BITS-1)
@ -591,6 +592,7 @@ static void init_luts(void)
lut_nmsedec_ref0[i] = FFMAX(((i * i - (i << NMSEDEC_BITS) + (1 << 2 * NMSEDEC_FRACBITS) + (1 << (NMSEDEC_FRACBITS - 1))) & mask)
<< 1, 0);
}
ff_jpeg2000_init_tier1_luts();
}
/* tier-1 routines */
@ -1713,6 +1715,7 @@ static int parse_layer_rates(Jpeg2000EncoderContext *s)
static av_cold int j2kenc_init(AVCodecContext *avctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
int i, ret;
Jpeg2000EncoderContext *s = avctx->priv_data;
Jpeg2000CodingStyle *codsty = &s->codsty;
@ -1779,8 +1782,7 @@ static av_cold int j2kenc_init(AVCodecContext *avctx)
return ret;
}
ff_jpeg2000_init_tier1_luts();
init_luts();
ff_thread_once(&init_static_once, init_luts);
init_quantization(s);
if ((ret=init_tiles(s)) < 0)
@ -1849,5 +1851,5 @@ const AVCodec ff_jpeg2000_encoder = {
AV_PIX_FMT_NONE
},
.priv_class = &j2k_class,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
};