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va: h265enc: enable ICQ and QVBR modes

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6433>
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He Junyan 2024-03-23 01:05:40 +08:00 committed by Víctor Manuel Jáquez Leal
parent f45f52a786
commit d90f718b1a
1 changed files with 37 additions and 5 deletions
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42
subprojects/gst-plugins-bad/sys/va/gstvah265enc.c
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@ -3193,7 +3193,7 @@ _h265_ensure_rate_control (GstVaH265Enc * self)
* speed and quality, while the others control encoding bit rate and
* quality. The lower value has better quality(maybe bigger MV search
* range) but slower speed, the higher value has faster speed but lower
* quality.
* quality. It is valid for all modes.
*
* The possible composition to control the bit rate and quality:
*
@ -3228,6 +3228,17 @@ _h265_ensure_rate_control (GstVaH265Enc * self)
* target bit rate, and encoder will try its best to make the QP
* with in the ["max-qp", "min-qp"] range. Other paramters are
* ignored.
*
* 5. ICQ mode: "rate-control=ICQ", which is similar to CQP mode
* except that its QP may be increased or decreaed to avoid huge
* bit rate fluctuation. The "qpi" specifies a quality factor
* as the base quality value. Other properties are ignored.
*
* 6. QVBR mode: "rate-control=QVBR", which is similar to VBR mode
* with the same usage of "bitrate", "target-percentage" and
* "cpb-size" properties. Besides that, the "qpi" specifies a
* quality factor as the base quality value which the driver
* should try its best to meet. Other properties are ignored.
*/
GstVaBaseEnc *base = GST_VA_BASE_ENC (self);
@ -3265,6 +3276,17 @@ _h265_ensure_rate_control (GstVaH265Enc * self)
self->rc.rc_ctrl_mode = VA_RC_NONE;
}
/* ICQ mode and QVBR mode do not need max/min qp. */
if (self->rc.rc_ctrl_mode == VA_RC_ICQ || self->rc.rc_ctrl_mode == VA_RC_QVBR) {
self->rc.min_qp = 0;
self->rc.max_qp = 51;
update_property_uint (base, &self->prop.min_qp, self->rc.min_qp,
PROP_MIN_QP);
update_property_uint (base, &self->prop.max_qp, self->rc.max_qp,
PROP_MAX_QP);
}
if (self->rc.min_qp > self->rc.max_qp) {
GST_INFO_OBJECT (self, "The min_qp %d is bigger than the max_qp %d, "
"set it to the max_qp", self->rc.min_qp, self->rc.max_qp);
@ -3320,7 +3342,8 @@ _h265_ensure_rate_control (GstVaH265Enc * self)
/* Calculate a bitrate is not set. */
if ((self->rc.rc_ctrl_mode == VA_RC_CBR || self->rc.rc_ctrl_mode == VA_RC_VBR
|| self->rc.rc_ctrl_mode == VA_RC_VCM) && bitrate == 0) {
|| self->rc.rc_ctrl_mode == VA_RC_VCM
|| self->rc.rc_ctrl_mode == VA_RC_QVBR) && bitrate == 0) {
/* FIXME: Provide better estimation. */
/* Choose the max value of all levels' MinCr which is 8, and x2 for
conservative calculation. So just using a 1/16 compression ratio,
@ -3355,6 +3378,9 @@ _h265_ensure_rate_control (GstVaH265Enc * self)
/* Adjust the setting based on RC mode. */
switch (self->rc.rc_ctrl_mode) {
case VA_RC_NONE:
case VA_RC_ICQ:
self->rc.qp_p = self->rc.qp_b = 26;
/* Fall through. */
case VA_RC_CQP:
self->rc.max_bitrate = 0;
self->rc.target_bitrate = 0;
@ -3368,11 +3394,14 @@ _h265_ensure_rate_control (GstVaH265Enc * self)
self->rc.qp_i = self->rc.qp_p = self->rc.qp_b = 26;
break;
case VA_RC_VBR:
self->rc.qp_i = 26;
/* Fall through. */
case VA_RC_QVBR:
self->rc.qp_p = self->rc.qp_b = 26;
g_assert (self->rc.target_percentage >= 10);
self->rc.max_bitrate = (guint) gst_util_uint64_scale_int (bitrate,
100, self->rc.target_percentage);
self->rc.target_bitrate = bitrate;
self->rc.qp_i = self->rc.qp_p = self->rc.qp_b = 26;
break;
case VA_RC_VCM:
self->rc.max_bitrate = bitrate;
@ -3397,7 +3426,9 @@ _h265_ensure_rate_control (GstVaH265Enc * self)
"Target bitrate: %u bits/sec", self->rc.max_bitrate,
self->rc.target_bitrate);
if (self->rc.rc_ctrl_mode != VA_RC_NONE && self->rc.rc_ctrl_mode != VA_RC_CQP)
if (self->rc.rc_ctrl_mode == VA_RC_CBR || self->rc.rc_ctrl_mode == VA_RC_VBR
|| self->rc.rc_ctrl_mode == VA_RC_VCM
|| self->rc.rc_ctrl_mode == VA_RC_QVBR)
_h265_calculate_bitrate_hrd (self);
/* notifications */
@ -5129,7 +5160,8 @@ gst_va_h265_enc_class_init (gpointer g_klass, gpointer class_data)
*/
properties[PROP_QP_I] = g_param_spec_uint ("qpi", "I Frame QP",
"The quantizer value for I frame. In CQP mode, it specifies the QP of I "
"frame, in other mode, it specifies the init QP of all frames", 0, 51, 26,
"frame. In ICQ and QVBR modes, it specifies a quality factor. In other "
"modes, it is ignored", 0, 51, 26,
param_flags | GST_PARAM_MUTABLE_PLAYING);
/**