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omxvideoenc: Add look-ahead property to ZYNQ_USCALE_PLUS encoder

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This patch adds look-ahead property to encoder

The value indicates look ahead size in frames,
the number of frames processed ahead of second pass encoding.
Dual pass encoding is disabled if look-ahead
value is less than 2.
This commit is contained in:
Varunkumar Allagadapa 2018-08-28 13:03:14 -07:00 committed by Stéphane Cerveau
parent bfd8306ef6
commit f35f312634
2 changed files with 32 additions and 0 deletions
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31
omx/gstomxvideoenc.c
View file

@ -282,6 +282,7 @@ enum
PROP_DEFAULT_ROI_QUALITY,
PROP_LONGTERM_REF,
PROP_LONGTERM_FREQUENCY,
PROP_LOOK_AHEAD,
};
/* FIXME: Better defaults */
@ -308,6 +309,7 @@ enum
#define GST_OMX_VIDEO_ENC_DEFAULT_ROI_QUALITY OMX_ALG_ROI_QUALITY_HIGH
#define GST_OMX_VIDEO_ENC_LONGTERM_REF_DEFAULT (FALSE)
#define GST_OMX_VIDEO_ENC_LONGTERM_FREQUENCY_DEFAULT (0)
#define GST_OMX_VIDEO_ENC_LOOK_AHEAD_DEFAULT (0)
/* ZYNQ_USCALE_PLUS encoder custom events */
#define OMX_ALG_GST_EVENT_INSERT_LONGTERM "omx-alg/insert-longterm"
@ -511,6 +513,13 @@ gst_omx_video_enc_class_init (GstOMXVideoEncClass * klass)
0, G_MAXUINT, GST_OMX_VIDEO_ENC_LONGTERM_REF_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_LOOK_AHEAD,
g_param_spec_uint ("look-ahead", "look ahead size",
"The number of frames processed ahead of second pass encoding. If smaller than 2, dual pass encoding is disabled",
0, G_MAXUINT, GST_OMX_VIDEO_ENC_LOOK_AHEAD_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
#endif
element_class->change_state =
@ -569,6 +578,7 @@ gst_omx_video_enc_init (GstOMXVideoEnc * self)
self->default_roi_quality = GST_OMX_VIDEO_ENC_DEFAULT_ROI_QUALITY;
self->long_term_ref = GST_OMX_VIDEO_ENC_LONGTERM_REF_DEFAULT;
self->long_term_freq = GST_OMX_VIDEO_ENC_LONGTERM_FREQUENCY_DEFAULT;
self->look_ahead = GST_OMX_VIDEO_ENC_LOOK_AHEAD_DEFAULT;
#endif
self->default_target_bitrate = GST_OMX_PROP_OMX_DEFAULT;
@ -855,6 +865,21 @@ set_zynqultrascaleplus_props (GstOMXVideoEnc * self)
CHECK_ERR ("longterm");
}
{
OMX_ALG_VIDEO_PARAM_LOOKAHEAD look_ahead;
GST_OMX_INIT_STRUCT (&look_ahead);
look_ahead.nPortIndex = self->enc_in_port->index;
look_ahead.nLookAhead = self->look_ahead;
GST_DEBUG_OBJECT (self, "setting look_ahead to %d", self->look_ahead);
err =
gst_omx_component_set_parameter (self->enc,
(OMX_INDEXTYPE) OMX_ALG_IndexParamVideoLookAhead, &look_ahead);
CHECK_ERR ("look-ahead");
}
return TRUE;
}
#endif
@ -1193,6 +1218,9 @@ gst_omx_video_enc_set_property (GObject * object, guint prop_id,
case PROP_LONGTERM_FREQUENCY:
self->long_term_freq = g_value_get_uint (value);
break;
case PROP_LOOK_AHEAD:
self->look_ahead = g_value_get_uint (value);
break;
#endif
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -1279,6 +1307,9 @@ gst_omx_video_enc_get_property (GObject * object, guint prop_id, GValue * value,
case PROP_LONGTERM_FREQUENCY:
g_value_set_uint (value, self->long_term_freq);
break;
case PROP_LOOK_AHEAD:
g_value_set_uint (value, self->look_ahead);
break;
#endif
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

1
omx/gstomxvideoenc.h
View file

@ -94,6 +94,7 @@ struct _GstOMXVideoEnc
gint default_roi_quality;
gboolean long_term_ref;
guint32 long_term_freq;
guint32 look_ahead;
#endif
guint32 default_target_bitrate;