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omxvideoenc: Add look-ahead property to ZYNQ_USCALE_PLUS encoder
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.
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2 changed files with 32 additions and 0 deletions
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@ -282,6 +282,7 @@ enum
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PROP_DEFAULT_ROI_QUALITY,
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PROP_LONGTERM_REF,
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PROP_LONGTERM_FREQUENCY,
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PROP_LOOK_AHEAD,
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};
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/* FIXME: Better defaults */
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@ -308,6 +309,7 @@ enum
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#define GST_OMX_VIDEO_ENC_DEFAULT_ROI_QUALITY OMX_ALG_ROI_QUALITY_HIGH
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#define GST_OMX_VIDEO_ENC_LONGTERM_REF_DEFAULT (FALSE)
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#define GST_OMX_VIDEO_ENC_LONGTERM_FREQUENCY_DEFAULT (0)
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#define GST_OMX_VIDEO_ENC_LOOK_AHEAD_DEFAULT (0)
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/* ZYNQ_USCALE_PLUS encoder custom events */
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#define OMX_ALG_GST_EVENT_INSERT_LONGTERM "omx-alg/insert-longterm"
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@ -511,6 +513,13 @@ gst_omx_video_enc_class_init (GstOMXVideoEncClass * klass)
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0, G_MAXUINT, GST_OMX_VIDEO_ENC_LONGTERM_REF_DEFAULT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_READY));
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g_object_class_install_property (gobject_class, PROP_LOOK_AHEAD,
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g_param_spec_uint ("look-ahead", "look ahead size",
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"The number of frames processed ahead of second pass encoding. If smaller than 2, dual pass encoding is disabled",
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0, G_MAXUINT, GST_OMX_VIDEO_ENC_LOOK_AHEAD_DEFAULT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_READY));
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#endif
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element_class->change_state =
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@ -569,6 +578,7 @@ gst_omx_video_enc_init (GstOMXVideoEnc * self)
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self->default_roi_quality = GST_OMX_VIDEO_ENC_DEFAULT_ROI_QUALITY;
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self->long_term_ref = GST_OMX_VIDEO_ENC_LONGTERM_REF_DEFAULT;
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self->long_term_freq = GST_OMX_VIDEO_ENC_LONGTERM_FREQUENCY_DEFAULT;
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self->look_ahead = GST_OMX_VIDEO_ENC_LOOK_AHEAD_DEFAULT;
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#endif
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self->default_target_bitrate = GST_OMX_PROP_OMX_DEFAULT;
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@ -855,6 +865,21 @@ set_zynqultrascaleplus_props (GstOMXVideoEnc * self)
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CHECK_ERR ("longterm");
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}
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{
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OMX_ALG_VIDEO_PARAM_LOOKAHEAD look_ahead;
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GST_OMX_INIT_STRUCT (&look_ahead);
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look_ahead.nPortIndex = self->enc_in_port->index;
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look_ahead.nLookAhead = self->look_ahead;
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GST_DEBUG_OBJECT (self, "setting look_ahead to %d", self->look_ahead);
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err =
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gst_omx_component_set_parameter (self->enc,
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(OMX_INDEXTYPE) OMX_ALG_IndexParamVideoLookAhead, &look_ahead);
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CHECK_ERR ("look-ahead");
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}
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return TRUE;
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}
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#endif
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@ -1193,6 +1218,9 @@ gst_omx_video_enc_set_property (GObject * object, guint prop_id,
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case PROP_LONGTERM_FREQUENCY:
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self->long_term_freq = g_value_get_uint (value);
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break;
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case PROP_LOOK_AHEAD:
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self->look_ahead = g_value_get_uint (value);
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break;
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#endif
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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@ -1279,6 +1307,9 @@ gst_omx_video_enc_get_property (GObject * object, guint prop_id, GValue * value,
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case PROP_LONGTERM_FREQUENCY:
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g_value_set_uint (value, self->long_term_freq);
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break;
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case PROP_LOOK_AHEAD:
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g_value_set_uint (value, self->look_ahead);
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break;
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#endif
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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@ -94,6 +94,7 @@ struct _GstOMXVideoEnc
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gint default_roi_quality;
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gboolean long_term_ref;
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guint32 long_term_freq;
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guint32 look_ahead;
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#endif
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guint32 default_target_bitrate;
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