ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinha...@gmail.com> | Thu Dec 10 05:00:40 2020 +0100| [929107c75156af9a403882248032a301380c635e] | committer: Andreas Rheinhardt
avcodec/mpeg4videoenc: Make encoder init-threadsafe Reviewed-by: Anton Khirnov <an...@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=929107c75156af9a403882248032a301380c635e --- libavcodec/mpeg4videoenc.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/libavcodec/mpeg4videoenc.c b/libavcodec/mpeg4videoenc.c index 4593fe6096..eb8d552877 100644 --- a/libavcodec/mpeg4videoenc.c +++ b/libavcodec/mpeg4videoenc.c @@ -23,6 +23,7 @@ #include "libavutil/attributes.h" #include "libavutil/log.h" #include "libavutil/opt.h" +#include "libavutil/thread.h" #include "mpegutils.h" #include "mpegvideo.h" #include "h263.h" @@ -1266,11 +1267,21 @@ static av_cold void init_uni_mpeg4_rl_tab(RLTable *rl, uint32_t *bits_tab, } } +static av_cold void mpeg4_encode_init_static(void) +{ + init_uni_dc_tab(); + + ff_mpeg4_init_rl_intra(); + + init_uni_mpeg4_rl_tab(&ff_mpeg4_rl_intra, uni_mpeg4_intra_rl_bits, uni_mpeg4_intra_rl_len); + init_uni_mpeg4_rl_tab(&ff_h263_rl_inter, uni_mpeg4_inter_rl_bits, uni_mpeg4_inter_rl_len); +} + static av_cold int encode_init(AVCodecContext *avctx) { + static AVOnce init_static_once = AV_ONCE_INIT; MpegEncContext *s = avctx->priv_data; int ret; - static int done = 0; if (avctx->width >= (1<<13) || avctx->height >= (1<<13)) { av_log(avctx, AV_LOG_ERROR, "dimensions too large for MPEG-4\n"); @@ -1280,16 +1291,7 @@ static av_cold int encode_init(AVCodecContext *avctx) if ((ret = ff_mpv_encode_init(avctx)) < 0) return ret; - if (!done) { - done = 1; - - init_uni_dc_tab(); - - ff_mpeg4_init_rl_intra(); - - init_uni_mpeg4_rl_tab(&ff_mpeg4_rl_intra, uni_mpeg4_intra_rl_bits, uni_mpeg4_intra_rl_len); - init_uni_mpeg4_rl_tab(&ff_h263_rl_inter, uni_mpeg4_inter_rl_bits, uni_mpeg4_inter_rl_len); - } + ff_thread_once(&init_static_once, mpeg4_encode_init_static); s->min_qcoeff = -2048; s->max_qcoeff = 2047; @@ -1405,6 +1407,6 @@ AVCodec ff_mpeg4_encoder = { .close = ff_mpv_encode_end, .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS, - .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, .priv_class = &mpeg4enc_class, }; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
