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libs: encoder: h264: support I/P/B QP setting seperatedly

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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.
In addition, remove the limitation of (<= 4) when setting
slice_qp_delta.

https://bugzilla.gnome.org/show_bug.cgi?id=785923
This commit is contained in:
Hyunjun Ko 2017-09-13 12:22:07 +09:00 committed by Víctor Manuel Jáquez Leal
parent 5796750604
commit 64a38a16f1
2 changed files with 53 additions and 3 deletions
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52
gst-libs/gst/vaapi/gstvaapiencoder_h264.c
View file

@ -709,6 +709,8 @@ struct _GstVaapiEncoderH264
guint32 init_qp;
guint32 min_qp;
guint32 qp_i;
guint32 qp_ip;
guint32 qp_ib;
guint32 num_slices;
guint32 num_bframes;
guint32 mb_width;
@ -2154,9 +2156,21 @@ add_slice_headers (GstVaapiEncoderH264 * encoder, GstVaapiEncPicture * picture,
slice_param->cabac_init_idc = 0;
slice_param->slice_qp_delta = encoder->qp_i - encoder->init_qp;
if (slice_param->slice_qp_delta > 4)
slice_param->slice_qp_delta = 4;
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 might 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->disable_deblocking_filter_idc = 0;
slice_param->slice_alpha_c0_offset_div2 = 2;
slice_param->slice_beta_offset_div2 = 2;
@ -3055,6 +3069,12 @@ gst_vaapi_encoder_h264_set_property (GstVaapiEncoder * base_encoder,
case GST_VAAPI_ENCODER_H264_PROP_MIN_QP:
encoder->min_qp = g_value_get_uint (value);
break;
case GST_VAAPI_ENCODER_H264_PROP_QP_IP:
encoder->qp_ip = g_value_get_int (value);
break;
case GST_VAAPI_ENCODER_H264_PROP_QP_IB:
encoder->qp_ib = g_value_get_int (value);
break;
case GST_VAAPI_ENCODER_H264_PROP_NUM_SLICES:
encoder->num_slices = g_value_get_uint (value);
break;
@ -3200,6 +3220,32 @@ gst_vaapi_encoder_h264_get_default_properties (void)
"Minimum QP", "Minimum quantizer value", 1, 51, 1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstVaapiEncoderH264: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_H264_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));
/**
* GstVaapiEncoderH264: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_H264_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));
/**
* GstVaapiEncoderH264:num-slices:
*

4
gst-libs/gst/vaapi/gstvaapiencoder_h264.h
View file

@ -52,6 +52,8 @@ typedef struct _GstVaapiEncoderH264 GstVaapiEncoderH264;
* @GST_VAAPI_ENCODER_H264_PROP_COMPLIANCE_MODE: Relax Compliance restrictions
* @GST_VAAPI_ENCODER_H264_PROP_NUM_REF_FRAMES: Maximum number of reference frames.
* @GST_VAAPI_ENCODER_H264_PROP_MBBRC: Macroblock level Bitrate Control.
* @GST_VAAPI_ENCODER_H264_PROP_QP_IP: Difference of QP between I and P frame.
* @GST_VAAPI_ENCODER_H264_PROP_QP_IB: Difference of QP between I and B frame.
*
* The set of H.264 encoder specific configurable properties.
*/
@ -69,6 +71,8 @@ typedef enum {
GST_VAAPI_ENCODER_H264_PROP_COMPLIANCE_MODE = -11,
GST_VAAPI_ENCODER_H264_PROP_NUM_REF_FRAMES = -12,
GST_VAAPI_ENCODER_H264_PROP_MBBRC = -13,
GST_VAAPI_ENCODER_H264_PROP_QP_IP = -14,
GST_VAAPI_ENCODER_H264_PROP_QP_IB = -15,
} GstVaapiEncoderH264Prop;
GstVaapiEncoder *