avcodec/decode: flush the internal bsfs instead of constantly reinitalizing them

Initialize the bsfs once when opening the codec and uninitialize them once when
closing it, instead of at every codec flush/seek.

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 4f9a2b76ef..285bfdbc63 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -727,6 +727,12 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
             goto free_and_end;
     }
 
+    if (av_codec_is_decoder(avctx->codec)) {
+        ret = ff_decode_bsfs_init(avctx);
+        if (ret < 0)
+            goto free_and_end;
+    }
+
     if (HAVE_THREADS
         && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
         ret = ff_thread_init(avctx);
@@ -1032,6 +1038,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
         av_packet_free(&avctx->internal->last_pkt_props);
 
         av_packet_free(&avctx->internal->ds.in_pkt);
+        ff_decode_bsfs_uninit(avctx);
 
         av_freep(&avctx->internal->pool);
     }