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[FFmpeg-devel,6/6] avcodec/mpv_reconstruct_mb_template: Optimize dead code away

Message ID GV1P250MB0737BB636B363E909D3782128F299@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM
State Accepted
Commit eb1ce6e3c73dbb59c3178d643eacc48bba824922
Headers show
Series [FFmpeg-devel,1/6] avcodec/mpegvideo: Ignore skip_idct for encoders | expand

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Commit Message

Andreas Rheinhardt Oct. 17, 2022, 1:34 a.m. UTC 
None of the MPEG-1/2 codecs support frame threading,
so one can optimize the check for it away.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/mpv_reconstruct_mb_template.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/libavcodec/mpv_reconstruct_mb_template.c b/libavcodec/mpv_reconstruct_mb_template.c
index 7d74ec1f5c..5f2a19e587 100644
--- a/libavcodec/mpv_reconstruct_mb_template.c
+++ b/libavcodec/mpv_reconstruct_mb_template.c
@@ -121,7 +121,8 @@  void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
             /* decoding or more than one mb_type (MC was already done otherwise) */
 
 #if !IS_ENCODER
-            if (HAVE_THREADS && s->avctx->active_thread_type & FF_THREAD_FRAME) {
+            if (HAVE_THREADS && is_mpeg12 != DEFINITELY_MPEG12 &&
+                s->avctx->active_thread_type & FF_THREAD_FRAME) {
                 if (s->mv_dir & MV_DIR_FORWARD) {
                     ff_thread_await_progress(&s->last_picture_ptr->tf,
                                              lowest_referenced_row(s, 0), 0);