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, 8 deletions

diff --git a/libavcodec/tta.c b/libavcodec/tta.c
index 3fbee06987..e68e4fbb36 100644
--- a/libavcodec/tta.c
+++ b/libavcodec/tta.c
@@ -389,13 +389,6 @@ error:
     return ret;
 }
 
-static int init_thread_copy(AVCodecContext *avctx)
-{
-    TTAContext *s = avctx->priv_data;
-    s->avctx = avctx;
-    return allocate_buffers(avctx);
-}
-
 static av_cold int tta_decode_close(AVCodecContext *avctx) {
     TTAContext *s = avctx->priv_data;
 
@@ -430,7 +423,6 @@ AVCodec ff_tta_decoder = {
     .init           = tta_decode_init,
     .close          = tta_decode_close,
     .decode         = tta_decode_frame,
-    .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
     .priv_class     = &tta_decoder_class,
 };