avcodec/thread: Don't use ThreadFrame when unnecessary

The majority of frame-threaded decoders (mainly the intra-only)
need exactly one part of ThreadFrame: The AVFrame. They don't
need the owners nor the progress, yet they had to use it because
ff_thread_(get|release)_buffer() requires it.

This commit changes this and makes these functions work with ordinary
AVFrames; the decoders that need the extra fields for progress
use ff_thread_(get|release)_ext_buffer() which work exactly
as ff_thread_(get|release)_buffer() used to do.

This also avoids some unnecessary allocations of progress AVBuffers,
namely for H.264 and HEVC film grain frames: These frames are not
used for synchronization and therefore don't need a ThreadFrame.

Also move the ThreadFrame structure as well as ff_thread_ref_frame()
to threadframe.h, the header for frame-threaded decoders with
inter-frame dependencies.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/libavcodec/bitpacked_dec.c b/libavcodec/bitpacked_dec.c
index 69fea9c366..fa554d99af 100644
--- a/libavcodec/bitpacked_dec.c
+++ b/libavcodec/bitpacked_dec.c
@@ -65,12 +65,11 @@ static int bitpacked_decode_yuv422p10(AVCodecContext *avctx, AVFrame *frame,
 {
     uint64_t frame_size = (uint64_t)avctx->width * (uint64_t)avctx->height * 20;
     uint64_t packet_size = (uint64_t)avpkt->size * 8;
-    ThreadFrame tframe = { .f = frame };
     GetBitContext bc;
     uint16_t *y, *u, *v;
     int ret, i, j;
 
-    ret = ff_thread_get_buffer(avctx, &tframe, 0);
+    ret = ff_thread_get_buffer(avctx, frame, 0);
     if (ret < 0)
         return ret;