---
libavcodec/qsvenc.c | 4 ++++
libavcodec/qsvenc.h | 13 +++++++++++++
2 files changed, 17 insertions(+)
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index 5eacf3ca88..24d9ec4d71 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -604,6 +604,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
q->extco2.Trellis = q->trellis;
#endif
+#if QSV_HAVE_LA_DS
+ q->extco2.LookAheadDS = q->la_ds;
+#endif
+
#if QSV_HAVE_BREF_TYPE
#if FF_API_PRIVATE_OPT
FF_DISABLE_DEPRECATION_WARNINGS
diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h
index 7f11460d08..7c4c4f8688 100644
--- a/libavcodec/qsvenc.h
+++ b/libavcodec/qsvenc.h
@@ -42,6 +42,7 @@
#define QSV_HAVE_BREF_TYPE QSV_VERSION_ATLEAST(1, 8)
#define QSV_HAVE_LA QSV_VERSION_ATLEAST(1, 7)
+#define QSV_HAVE_LA_DS QSV_VERSION_ATLEAST(1, 8)
#define QSV_HAVE_LA_HRD QSV_VERSION_ATLEAST(1, 11)
#if defined(_WIN32)
@@ -54,6 +55,12 @@
#define QSV_HAVE_QVBR 0
#endif
+#if !QSV_HAVE_LA_DS
+#define MFX_LOOKAHEAD_DS_OFF 0
+#define MFX_LOOKAHEAD_DS_2x 0
+#define MFX_LOOKAHEAD_DS_4x 0
+#endif
+
#define QSV_COMMON_OPTS \
{ "async_depth", "Maximum processing parallelism", OFFSET(qsv.async_depth),
AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 0, INT_MAX, VE }, \
{ "avbr_accuracy", "Accuracy of the AVBR ratecontrol",
OFFSET(qsv.avbr_accuracy), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
\
@@ -64,6 +71,11 @@
{ "slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_TARGETUSAGE_BEST_QUALITY
}, INT_MIN, INT_MAX, VE, "preset" }, \
{ "la_depth", "Number of frames to analyze before encoding.",
OFFSET(qsv.la_depth), AV_OPT_TYPE_INT, { .i64 = 9 }, 9, 100, VE, "la_depth"
}, \
{ "unset", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 9 }, INT_MIN, INT_MAX,
VE, "la_depth" }, \
+{ "la_ds", "Downscaling factor for the frames saved for the lookahead
analisys", OFFSET(qsv.la_ds), AV_OPT_TYPE_INT, { .i64 = -1 }, -1,
MFX_LOOKAHEAD_DS_4x, VE, "la_ds" }, \
+{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX,
VE, "la_ds" }, \
+{ "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_LOOKAHEAD_DS_OFF }, INT_MIN,
INT_MAX, VE, "la_ds" }, \
+{ "2x", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_LOOKAHEAD_DS_2x }, INT_MIN,
INT_MAX, VE, "la_ds" }, \
+{ "4x", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_LOOKAHEAD_DS_4x }, INT_MIN,
INT_MAX, VE, "la_ds" }, \
{ "vcm", "Use the video conferencing mode ratecontrol", OFFSET(qsv.vcm),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, \
{ "rdo", "Enable rate distortion optimization", OFFSET(qsv.rdo),
AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE }, \
{ "max_frame_size", "Maximum encoded frame size in bytes",
OFFSET(qsv.max_frame_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, UINT16_MAX, VE
}, \
@@ -116,6 +128,7 @@ typedef struct QSVEncContext {
int avbr_accuracy;
int avbr_convergence;
int la_depth;
+ int la_ds;
int vcm;
int rdo;
int max_frame_size;
--
2.11.1
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