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libs: encoder: h265: support I/P/B QP setting seperatedly

Browse source 
Creates 2 properties, qp-ip and qp-ib for setting different QP for P/B
frames
and set slice_qp_delta for each frame according to the value provided.

https://bugzilla.gnome.org/show_bug.cgi?id=785923
This commit is contained in:
Hyunjun Ko 2017-09-13 12:23:42 +09:00 committed by Víctor Manuel Jáquez Leal
parent 64a38a16f1
commit 5333155e27
2 changed files with 53 additions and 0 deletions
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49
gst-libs/gst/vaapi/gstvaapiencoder_h265.c
View file

@ -100,6 +100,8 @@ struct _GstVaapiEncoderH265
guint32 init_qp;
guint32 min_qp;
guint32 qp_i;
guint32 qp_ip;
guint32 qp_ib;
guint32 num_slices;
guint32 num_bframes;
guint32 ctu_width; /* CTU == Coding Tree Unit */
@ -1723,6 +1725,21 @@ add_slice_headers (GstVaapiEncoderH265 * encoder, GstVaapiEncPicture * picture,
slice_param->max_num_merge_cand = 5; /* MaxNumMergeCand */
slice_param->slice_qp_delta = encoder->qp_i - encoder->init_qp;
if (GST_VAAPI_ENCODER_RATE_CONTROL (encoder) == GST_VAAPI_RATECONTROL_CQP) {
if (picture->type == GST_VAAPI_PICTURE_TYPE_P) {
slice_param->slice_qp_delta += encoder->qp_ip;
} else if (picture->type == GST_VAAPI_PICTURE_TYPE_B) {
slice_param->slice_qp_delta += encoder->qp_ib;
}
if ((gint) encoder->init_qp + slice_param->slice_qp_delta <
(gint) encoder->min_qp) {
slice_param->slice_qp_delta = encoder->min_qp - encoder->init_qp;
}
/* TODO: max_qp could be provided as a property in the future */
if ((gint) encoder->init_qp + slice_param->slice_qp_delta > 51) {
slice_param->slice_qp_delta = 51 - encoder->init_qp;
}
}
slice_param->slice_fields.bits.
slice_loop_filter_across_slices_enabled_flag = TRUE;
@ -2543,6 +2560,12 @@ gst_vaapi_encoder_h265_set_property (GstVaapiEncoder * base_encoder,
case GST_VAAPI_ENCODER_H265_PROP_MIN_QP:
encoder->min_qp = g_value_get_uint (value);
break;
case GST_VAAPI_ENCODER_H265_PROP_QP_IP:
encoder->qp_ip = g_value_get_int (value);
break;
case GST_VAAPI_ENCODER_H265_PROP_QP_IB:
encoder->qp_ib = g_value_get_int (value);
break;
case GST_VAAPI_ENCODER_H265_PROP_NUM_SLICES:
encoder->num_slices = g_value_get_uint (value);
break;
@ -2655,6 +2678,32 @@ gst_vaapi_encoder_h265_get_default_properties (void)
"Minimum QP", "Minimum quantizer value", 1, 51, 1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstVaapiEncoderH265:qp-ip:
*
* The difference of QP between I and P Frame.
* This is available only on CQP mode.
*/
GST_VAAPI_ENCODER_PROPERTIES_APPEND (props,
GST_VAAPI_ENCODER_H265_PROP_QP_IP,
g_param_spec_int ("qp-ip",
"Difference of QP between I and P frame",
"Difference of QP between I and P frame (available only on CQP)",
-51, 51, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstVaapiEncoderH265:qp-ib:
*
* The difference of QP between I and B Frame.
* This is available only on CQP mode.
*/
GST_VAAPI_ENCODER_PROPERTIES_APPEND (props,
GST_VAAPI_ENCODER_H265_PROP_QP_IB,
g_param_spec_int ("qp-ib",
"Difference of QP between I and B frame",
"Difference of QP between I and B frame (available only on CQP)",
-51, 51, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/* FIXME: there seems to be issues with multi-slice encoding */
/**
* GstVaapiEncoderH265:num-slices:

4
gst-libs/gst/vaapi/gstvaapiencoder_h265.h
View file

@ -43,6 +43,8 @@ typedef struct _GstVaapiEncoderH265 GstVaapiEncoderH265;
* @GST_VAAPI_ENCODER_H265_PROP_NUM_REF_FRAMES: Maximum number of reference frames.
* @GST_VAAPI_ENCODER_H265_PROP_CPB_LENGTH: Length of the CPB buffer
* @GST_VAAPI_ENCODER_H265_PROP_MBBRC: Macroblock level Bitrate Control.
* @GST_VAAPI_ENCODER_H265_PROP_QP_IP: Difference of QP between I and P frame.
* @GST_VAAPI_ENCODER_H265_PROP_QP_IB: Difference of QP between I and B frame.
* in milliseconds (uint).
*
* The set of H.265 encoder specific configurable properties.
@ -55,6 +57,8 @@ typedef enum {
GST_VAAPI_ENCODER_H265_PROP_NUM_REF_FRAMES = -5,
GST_VAAPI_ENCODER_H265_PROP_CPB_LENGTH = -7,
GST_VAAPI_ENCODER_H265_PROP_MBBRC = -8,
GST_VAAPI_ENCODER_H265_PROP_QP_IP = -9,
GST_VAAPI_ENCODER_H265_PROP_QP_IB = -10,
} GstVaapiEncoderH265Prop;
GstVaapiEncoder *