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| author | Derek Buitenhuis <derek.buitenhuis@gmail.com> | 2015-10-07 12:33:01 -0400 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2015-10-14 14:35:34 +0200 |
| commit | d15368ee3926152a3a301c13cc638fbf7a062ddf (patch) | |
| tree | fda218f02537f55ca2ad0ad560337220fef130c4 /libavcodec/h264.c | |
| parent | c53e796f8b69799b7ad6d28fbab981d37edf1bc9 (diff) | |
h264: Run VLC init under pthread_once
This makes the h.264 decoder threadsafe to initialize.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavcodec/h264.c')
| -rw-r--r-- | libavcodec/h264.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index 4c1e135dcc..ec57d6d2f7 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -606,6 +606,8 @@ static int h264_init_context(AVCodecContext *avctx, H264Context *h) return 0; } +static AVOnce h264_vlc_init = AV_ONCE_INIT; + av_cold int ff_h264_decode_init(AVCodecContext *avctx) { H264Context *h = avctx->priv_data; @@ -619,7 +621,11 @@ av_cold int ff_h264_decode_init(AVCodecContext *avctx) if (!avctx->has_b_frames) h->low_delay = 1; - ff_h264_decode_init_vlc(); + ret = ff_thread_once(&h264_vlc_init, ff_h264_decode_init_vlc); + if (ret != 0) { + av_log(avctx, AV_LOG_ERROR, "pthread_once has failed."); + return AVERROR_UNKNOWN; + } if (avctx->codec_id == AV_CODEC_ID_H264) { if (avctx->ticks_per_frame == 1) @@ -1801,6 +1807,7 @@ AVCodec ff_h264_decoder = { .capabilities = /*AV_CODEC_CAP_DRAW_HORIZ_BAND |*/ AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, .flush = flush_dpb, .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_h264_update_thread_context), |