Add VDENC(lowpower mode) support for QSV h264 and HEVC
It's an experimental function(like lowpower in vaapi) with
some limitations:
- CBR/VBR require HuC which should be explicitly loaded via i915
module parameter(i915.enable_guc=2 for linux kerner version >= 4.16)
- HEVC VDENC was supported >= ICE LAKE
use option "-low_power 1" to enable VDENC.
[V2]: modified the commit message and option comments, use AV_OPT_TYPE_BOOL
to replace AV_OPT_TYPE_INT.
Signed-off-by: Linjie Fu
---
libavcodec/qsvenc.c | 3 +++
libavcodec/qsvenc.h | 2 ++
libavcodec/qsvenc_h264.c | 3 +++
libavcodec/qsvenc_hevc.c | 3 +++
4 files changed, 11 insertions(+)
diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index 948751daf4..7a031297fe 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -464,6 +464,9 @@ static int init_video_param(AVCodecContext *avctx,
QSVEncContext *q)
}
}
+#if QSV_HAVE_VDENC
+q->param.mfx.LowPower = q->low_power ?
MFX_CODINGOPTION_ON:MFX_CODINGOPTION_OFF;
+#endif
q->param.mfx.CodecProfile = q->profile;
q->param.mfx.TargetUsage= avctx->compression_level;
q->param.mfx.GopPicSize = FFMAX(0, avctx->gop_size);
diff --git a/libavcodec/qsvenc.h b/libavcodec/qsvenc.h
index 50cc4267e7..a396aa7d3f 100644
--- a/libavcodec/qsvenc.h
+++ b/libavcodec/qsvenc.h
@@ -44,6 +44,7 @@
#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)
+#define QSV_HAVE_VDENC QSV_VERSION_ATLEAST(1, 15)
#if defined(_WIN32) || defined(__CYGWIN__)
#define QSV_HAVE_AVBR QSV_VERSION_ATLEAST(1, 3)
@@ -162,6 +163,7 @@ typedef struct QSVEncContext {
int recovery_point_sei;
int a53_cc;
+int low_power;
#if QSV_HAVE_MF
int mfmode;
diff --git a/libavcodec/qsvenc_h264.c b/libavcodec/qsvenc_h264.c
index 07c9d64e6b..e538e0ad52 100644
--- a/libavcodec/qsvenc_h264.c
+++ b/libavcodec/qsvenc_h264.c
@@ -153,6 +153,9 @@ static const AVOption options[] = {
{ "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_MF_DISABLED },
INT_MIN, INT_MAX, VE, "mfmode" },
{ "auto" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_MF_AUTO },
INT_MIN, INT_MAX, VE, "mfmode" },
#endif
+#if QSV_HAVE_VDENC
+{ "low_power", "enable low power mode (experimental, many limitations by
mfx version, HW platform, BRC modes, etc.", OFFSET(qsv.low_power),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE},
+#endif
{ NULL },
};
diff --git a/libavcodec/qsvenc_hevc.c b/libavcodec/qsvenc_hevc.c
index 4339b316a3..f038f79b94 100644
--- a/libavcodec/qsvenc_hevc.c
+++ b/libavcodec/qsvenc_hevc.c
@@ -243,6 +243,9 @@ static const AVOption options[] = {
{ "main",NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN
}, INT_MIN, INT_MAX, VE, "profile" },
{ "main10", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN10
}, INT_MIN, INT_MAX, VE, "profile" },
{ "mainsp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAINSP
}, INT_MIN, INT_MAX, VE, "profile" },
+#if QSV_HAVE_VDENC
+{ "low_power", "enable low power mode (experimental, many limitations by
mfx version, HW platform, BRC modes, etc.", OFFSET(qsv.low_power),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
+#endif
{ NULL },
};
--
2.17.1
___
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
