qsv: adding Multi Frame Encode support

Starting from API 1.25 helps to improve performance of the simultaneous
encode, 1:N scenario, like:

./avconv  -y -hwaccel qsv -c:v h264_qsv -r 30000/1001 -i
~/bbb_sunflower_1080p_60fps_normal.mp4  -vframes 600 -an \
    -filter_complex "split=2[s1][s2]; [s1]scale_qsv=1280:720[o1];
[s2]scale_qsv=960:540[o2]" \
    -map [o1] -c:v h264_qsv -b:v 3200k -minrate 3200k -maxrate 3200k -f
rawvideo /tmp/3200a.264 \
    -map [o2] -c:v h264_qsv -b:v 1750k -minrate 1750k -maxrate 1750k -f
rawvideo /tmp/1750a.264

Signed-off-by: Maxym Dmytrychenko <maxim.d33@gmail.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/libavfilter/vf_deinterlace_qsv.c b/libavfilter/vf_deinterlace_qsv.c
index 2360491d3f..bb26a4dbfe 100644
--- a/libavfilter/vf_deinterlace_qsv.c
+++ b/libavfilter/vf_deinterlace_qsv.c
@@ -35,6 +35,7 @@
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "libavutil/time.h"
+#include "libavfilter/qsvvpp.h"
 
 #include "avfilter.h"
 #include "formats.h"
@@ -214,6 +215,12 @@ static int init_out_session(AVFilterContext *ctx)
             return AVERROR_UNKNOWN;
     }
 
+    if (QSV_RUNTIME_VERSION_ATLEAST(ver, 1, 25)) {
+        err = MFXJoinSession(device_hwctx->session, s->session);
+        if (err != MFX_ERR_NONE)
+            return AVERROR_UNKNOWN;
+    }
+
     memset(&par, 0, sizeof(par));
 
     s->deint_conf.Header.BufferId = MFX_EXTBUFF_VPP_DEINTERLACING;