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libs: encoder: h265: Adds VBR Encoding support

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Enables Variable BitRate mode, which does set FrameRate and RateControl
parameters.

https://bugzilla.gnome.org/show_bug.cgi?id=778732
This commit is contained in:
Hyunjun Ko 2017-06-01 12:11:12 +09:00 committed by Víctor Manuel Jáquez Leal
parent cbd912b89b
commit f68d0452be
1 changed files with 7 additions and 4 deletions
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11
gst-libs/gst/vaapi/gstvaapiencoder_h265.c
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@ -40,8 +40,9 @@
/* Supported set of VA rate controls, within this implementation */
#define SUPPORTED_RATECONTROLS \
(GST_VAAPI_RATECONTROL_MASK (CQP)) | \
GST_VAAPI_RATECONTROL_MASK (CBR)
(GST_VAAPI_RATECONTROL_MASK (CQP) | \
GST_VAAPI_RATECONTROL_MASK (CBR) | \
GST_VAAPI_RATECONTROL_MASK (VBR))
/* Supported set of tuning options, within this implementation */
#define SUPPORTED_TUNE_OPTIONS \
@ -1576,8 +1577,9 @@ fill_picture (GstVaapiEncoderH265 * encoder, GstVaapiEncPicture * picture,
pic_param->pic_fields.bits.transform_skip_enabled_flag = TRUE;
/* it seems driver requires enablement of cu_qp_delta_enabled_flag
* to modifiy QP values in CBR mode encoding */
if (GST_VAAPI_ENCODER_RATE_CONTROL (encoder) == GST_VAAPI_RATECONTROL_CBR)
pic_param->pic_fields.bits.cu_qp_delta_enabled_flag = TRUE;
pic_param->pic_fields.bits.cu_qp_delta_enabled_flag =
GST_VAAPI_ENCODER_RATE_CONTROL (encoder) != GST_VAAPI_RATECONTROL_CQP;
pic_param->pic_fields.bits.pps_loop_filter_across_slices_enabled_flag = TRUE;
if (GST_VAAPI_ENC_PICTURE_IS_IDR (picture))
@ -1904,6 +1906,7 @@ ensure_bitrate (GstVaapiEncoderH265 * encoder)
switch (GST_VAAPI_ENCODER_RATE_CONTROL (encoder)) {
case GST_VAAPI_RATECONTROL_CBR:
case GST_VAAPI_RATECONTROL_VBR:
if (!base_encoder->bitrate) {
/* FIXME: Provide better estimation */
/* Using a 1/6 compression ratio */