pthread_frame: merge the functionality for normal decoder init and init_thread_copy

The current design, where
- proper init is called for the first per-thread context
- first thread's private data is copied into private data for all the
  other threads
- a "fixup" function is called for all the other threads to e.g.
  allocate dynamically allocated data
is very fragile and hard to follow, so it is abandoned. Instead, the
same init function is used to init each per-thread context. Where
necessary, AVCodecInternal.is_copy can be used to differentiate between
the first thread and the other ones (e.g. for decoding the extradata
just once).

1 files changed, 0 insertions, 6 deletions

diff --git a/libavcodec/vp9.c b/libavcodec/vp9.c
index e47ed4e04e..2a3a4555b9 100644
--- a/libavcodec/vp9.c
+++ b/libavcodec/vp9.c
@@ -1748,11 +1748,6 @@ static av_cold int vp9_decode_init(AVCodecContext *avctx)
 }
 
 #if HAVE_THREADS
-static av_cold int vp9_decode_init_thread_copy(AVCodecContext *avctx)
-{
-    return init_frames(avctx);
-}
-
 static int vp9_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
 {
     int i, ret;
@@ -1812,7 +1807,6 @@ AVCodec ff_vp9_decoder = {
     .caps_internal         = FF_CODEC_CAP_SLICE_THREAD_HAS_MF |
                              FF_CODEC_CAP_ALLOCATE_PROGRESS,
     .flush                 = vp9_decode_flush,
-    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(vp9_decode_init_thread_copy),
     .update_thread_context = ONLY_IF_THREADS_ENABLED(vp9_decode_update_thread_context),
     .profiles              = NULL_IF_CONFIG_SMALL(ff_vp9_profiles),
     .bsfs                  = "vp9_superframe_split",