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avcodec/mpeg12enc: Use ff_thread_once() for static initializations

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Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-11-24 14:39:47 +01:00
parent ef3c1670d4
commit bf5bfcdbd3
1 changed files with 12 additions and 8 deletions
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20
libavcodec/mpeg12enc.c
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@ -31,6 +31,7 @@
#include "libavutil/avassert.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "libavutil/timecode.h"
#include "libavutil/stereo3d.h"
@ -1034,18 +1035,12 @@ void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
}
av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
static av_cold void mpeg12_encode_init_static(void)
{
static int done = 0;
ff_mpeg12_common_init(s);
if (!done) {
int f_code;
int mv;
int i;
done = 1;
ff_rl_init(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
ff_rl_init(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
@ -1110,7 +1105,14 @@ av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
for (f_code = MAX_FCODE; f_code > 0; f_code--)
for (mv = -(8 << f_code); mv < (8 << f_code); mv++)
fcode_tab[mv + MAX_MV] = f_code;
}
}
av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
{
static AVOnce init_static_once = AV_ONCE_INIT;
ff_mpeg12_common_init(s);
s->me.mv_penalty = mv_penalty;
s->fcode_tab = fcode_tab;
if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
@ -1129,6 +1131,8 @@ av_cold void ff_mpeg1_encode_init(MpegEncContext *s)
}
s->inter_ac_vlc_length =
s->inter_ac_vlc_last_length = uni_mpeg1_ac_vlc_len;
ff_thread_once(&init_static_once, mpeg12_encode_init_static);
}
#define OFFSET(x) offsetof(MpegEncContext, x)