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omxh264enc: Add 'ref-frames' property

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Add a property to control the number of frames for reference.

Min and max value is based on OpenMAX IL 1.2.0 Specification.
This commit is contained in:
Shinya Saito 2019-06-03 12:21:05 +09:00
parent a0b9c96f48
commit 5d8d478ff8
2 changed files with 24 additions and 1 deletions
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24
omx/gstomxh264enc.c
View file

@ -62,6 +62,7 @@ enum
PROP_ENTROPY_MODE,
PROP_CONSTRAINED_INTRA_PREDICTION,
PROP_LOOP_FILTER_MODE,
PROP_REF_FRAMES
};
#ifdef USE_OMX_TARGET_RPI
@ -73,7 +74,9 @@ enum
#define GST_OMX_H264_VIDEO_ENC_ENTROPY_MODE_DEFAULT (0xffffffff)
#define GST_OMX_H264_VIDEO_ENC_CONSTRAINED_INTRA_PREDICTION_DEFAULT (FALSE)
#define GST_OMX_H264_VIDEO_ENC_LOOP_FILTER_MODE_DEFAULT (0xffffffff)
#define GST_OMX_H264_VIDEO_ENC_REF_FRAMES_DEFAULT 0
#define GST_OMX_H264_VIDEO_ENC_REF_FRAMES_MIN 0
#define GST_OMX_H264_VIDEO_ENC_REF_FRAMES_MAX 16
/* class initialization */
@ -210,6 +213,15 @@ gst_omx_h264_enc_class_init (GstOMXH264EncClass * klass)
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_REF_FRAMES,
g_param_spec_uchar ("ref-frames", "Reference frames",
"Number of reference frames used for inter-motion search (0=component default)",
GST_OMX_H264_VIDEO_ENC_REF_FRAMES_MIN,
GST_OMX_H264_VIDEO_ENC_REF_FRAMES_MAX,
GST_OMX_H264_VIDEO_ENC_REF_FRAMES_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
basevideoenc_class->flush = gst_omx_h264_enc_flush;
basevideoenc_class->stop = gst_omx_h264_enc_stop;
@ -258,6 +270,9 @@ gst_omx_h264_enc_set_property (GObject * object, guint prop_id,
case PROP_LOOP_FILTER_MODE:
self->loop_filter_mode = g_value_get_enum (value);
break;
case PROP_REF_FRAMES:
self->ref_frames = g_value_get_uchar (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -295,6 +310,9 @@ gst_omx_h264_enc_get_property (GObject * object, guint prop_id, GValue * value,
case PROP_LOOP_FILTER_MODE:
g_value_set_enum (value, self->loop_filter_mode);
break;
case PROP_REF_FRAMES:
g_value_set_uchar (value, self->ref_frames);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -317,6 +335,7 @@ gst_omx_h264_enc_init (GstOMXH264Enc * self)
self->constrained_intra_prediction =
GST_OMX_H264_VIDEO_ENC_CONSTRAINED_INTRA_PREDICTION_DEFAULT;
self->loop_filter_mode = GST_OMX_H264_VIDEO_ENC_LOOP_FILTER_MODE_DEFAULT;
self->ref_frames = GST_OMX_H264_VIDEO_ENC_REF_FRAMES_DEFAULT;
}
static gboolean
@ -449,6 +468,9 @@ update_param_avc (GstOMXH264Enc * self,
param.nBFrames = self->b_frames;
}
if (self->ref_frames != GST_OMX_H264_VIDEO_ENC_REF_FRAMES_DEFAULT)
param.nRefFrames = self->ref_frames;
if (self->entropy_mode != GST_OMX_H264_VIDEO_ENC_ENTROPY_MODE_DEFAULT) {
param.bEntropyCodingCABAC = self->entropy_mode;
}

1
omx/gstomxh264enc.h
View file

@ -55,6 +55,7 @@ struct _GstOMXH264Enc
guint32 entropy_mode;
gboolean constrained_intra_prediction;
guint32 loop_filter_mode;
guint8 ref_frames;
GList *headers;
};