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| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-12-29 19:31:37 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-05-06 06:13:54 +0200 |
| commit | bc5e68ea88231ec748946c22c0d1f19eed3d4125 (patch) | |
| tree | 421a8409439cc01463e1e805a8e385e45b71121f /libavcodec/dvdec.c | |
| parent | 6d484671ecb612c32cbda0fab65f961743aff5f8 (diff) | |
| download | ffmpeg-bc5e68ea88231ec748946c22c0d1f19eed3d4125.tar.gz | |
avcodec/dvdec: Make decoder init-threadsafe
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavcodec/dvdec.c')
| -rw-r--r-- | libavcodec/dvdec.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c index da6112ff1f..a7424fd1d4 100644 --- a/libavcodec/dvdec.c +++ b/libavcodec/dvdec.c @@ -40,6 +40,7 @@ #include "libavutil/internal.h" #include "libavutil/mem_internal.h" #include "libavutil/pixdesc.h" +#include "libavutil/thread.h" #include "avcodec.h" #include "dv.h" @@ -142,12 +143,6 @@ static void dv_init_static(void) uint8_t new_dv_vlc_run[NB_DV_VLC * 2]; int16_t new_dv_vlc_level[NB_DV_VLC * 2]; int i, j; - static int done = 0; - - if (done) - return; - - done = 1; /* it's faster to include sign bit in a generic VLC parsing scheme */ for (i = 0, j = 0; i < NB_DV_VLC; i++, j++) { @@ -240,6 +235,7 @@ static void dv_init_weight_tables(DVVideoContext *ctx, const AVDVProfile *d) static av_cold int dvvideo_decode_init(AVCodecContext *avctx) { + static AVOnce init_static_once = AV_ONCE_INIT; DVVideoContext *s = avctx->priv_data; int i; @@ -259,7 +255,7 @@ static av_cold int dvvideo_decode_init(AVCodecContext *avctx) s->idct_put[0] = s->idsp.idct_put; s->idct_put[1] = ff_simple_idct248_put; - dv_init_static(); + ff_thread_once(&init_static_once, dv_init_static); return ff_dvvideo_init(avctx); } @@ -695,4 +691,5 @@ const AVCodec ff_dvvideo_decoder = { .decode = dvvideo_decode_frame, .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS, .max_lowres = 3, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, }; |