Should improve the performance on multiple transcoding from a single
source.
---
libavcodec/qsv.c | 5 +++++
libavfilter/qsvvpp.c | 3 +++
2 files changed, 8 insertions(+)
diff --git a/libavcodec/qsv.c b/libavcodec/qsv.c
index 56bfbb33d2..76a0e26bb4 100644
--- a/libavcodec/qsv.c
+++ b/libavcodec/qsv.c
@@ -594,6 +594,11 @@ int ff_qsv_init_session_device(AVCodecContext *avctx,
mfxSession *psession,
"Error setting a HW handle");
}
+ err = MFXJoinSession(parent_session, session);
+ if (err != MFX_ERR_NONE)
+ return ff_qsv_print_error(avctx, err,
+ "Error joining session");
+
ret = qsv_load_plugins(session, load_plugins, avctx);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error loading plugins\n");
diff --git a/libavfilter/qsvvpp.c b/libavfilter/qsvvpp.c
index 0b639c2d67..5d20a383fc 100644
--- a/libavfilter/qsvvpp.c
+++ b/libavfilter/qsvvpp.c
@@ -515,6 +515,9 @@ static int init_vpp_session(AVFilterContext *avctx,
QSVVPPContext *s)
if (ret != MFX_ERR_NONE)
return AVERROR_UNKNOWN;
}
+ ret = MFXJoinSession(device_hwctx->session, s->session);
+ if (ret != MFX_ERR_NONE)
+ return AVERROR_UNKNOWN;
if (IS_OPAQUE_MEMORY(s->in_mem_mode) || IS_OPAQUE_MEMORY(s->out_mem_mode))
{
s->opaque_alloc.In.Surfaces = s->surface_ptrs_in;
--
2.11.1
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