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lavc/qsvenc: add VDENC support for H264 

Add VDENC(lowpower mode) support for QSV H264

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 kernel version >= 4.16)

Use option "-low_power 1" to enable VDENC.
Add in dump_video_param() to show the status of VDENC in runtime log.

Signed-off-by: Linjie Fu <linjie.fu@intel.com>
Signed-off-by: Zhong Li <zhong.li@intel.com>
This commit is contained in:
Linjie Fu 2018-11-29 14:14:22 +08:00 committed by Zhong Li
parent ed3b64402e
commit e92ce340e6
3 changed files with 13 additions and 0 deletions
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7
libavcodec/qsvenc.c
View File

@ -226,6 +226,10 @@ static void dump_video_param(AVCodecContext *avctx, QSVEncContext *q,
av_log(avctx, AV_LOG_VERBOSE, "\n");
#endif
#if QSV_HAVE_VDENC
av_log(avctx, AV_LOG_VERBOSE, "VDENC: %s\n", print_threestate(info->LowPower));
#endif
#if QSV_VERSION_ATLEAST(1, 8)
av_log(avctx, AV_LOG_VERBOSE,
"RepeatPPS: %s; NumMbPerSlice: %"PRIu16"; LookAheadDS: ",
@ -475,6 +479,9 @@ 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);

2
libavcodec/qsvenc.h
View File

@ -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)
@ -163,6 +164,7 @@ typedef struct QSVEncContext {
int recovery_point_sei;
int repeat_pps;
int low_power;
int a53_cc;

4
libavcodec/qsvenc_h264.c
View File

@ -154,6 +154,10 @@ static const AVOption options[] = {
{ "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, BRC modes, etc.)", OFFSET(qsv.low_power), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE},
#endif
{ "repeat_pps", "repeat pps for every frame", OFFSET(qsv.repeat_pps), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ NULL },