From 380d64ecb19984a1466e727244a41445ae919060 Mon Sep 17 00:00:00 2001
From: Attila Nagy <attilanagy@google.com>
Date: Fri, 16 Sep 2011 13:54:06 +0300
Subject: [PATCH] Multithreaded encoder, late sync loopfilter
Sync with loopfilter thread just at the beginning of next frame encoding.
This returns control to application faster and allows a better multicore scaling.
When PSNR packets are generated the final filtered frame is needed imediatly
so we cannot delay the sync.
Change-Id: I288d97b5e331d41d6f5bb49d97986fa12ac6f066
---
vp8/encoder/onyx_if.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/vp8/encoder/onyx_if.c b/vp8/encoder/onyx_if.c
index 35e187e545..efe98944e9 100644
--- a/vp8/encoder/onyx_if.c
+++ b/vp8/encoder/onyx_if.c
@@ -3764,6 +3764,17 @@ static void encode_frame_to_data_rate
vp8_setup_key_frame(cpi);
}
+#if CONFIG_MULTITHREAD
+ /* wait for loopfilter thread done (for last picture)
+ * don't do it for first frame, re-code and when PSNR is calculated
+ */
+ if (cpi->b_multi_threaded && cm->current_video_frame && (!Loop) &&
+ (!cpi->b_calculate_psnr))
+ {
+ sem_wait(&cpi->h_event_end_lpf);
+ }
+#endif
+
// transform / motion compensation build reconstruction frame
vp8_encode_frame(cpi);
@@ -4136,8 +4147,8 @@ static void encode_frame_to_data_rate
vp8_pack_bitstream(cpi, dest, size);
#if CONFIG_MULTITHREAD
- /* wait for loopfilter thread done */
- if (cpi->b_multi_threaded)
+ /* if PSNR packets are generated we have to wait for the lpf */
+ if (cpi->b_multi_threaded && cpi->b_calculate_psnr)
{
sem_wait(&cpi->h_event_end_lpf);
}
--
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