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msdkenc: add extbrc support in ext-coding-props property

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The SDK can support external bitrate control [1], so add extbrc
to enable this feature.

[1] https://github.com/Intel-Media-SDK/MediaSDK/blob/master/doc/mediasdk-man.md#mfxextcodingoption2

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2139>
This commit is contained in:
Yinhang Liu 2021-05-23 18:17:38 +08:00 committed by Haihao Xiang
parent ea5636af2c
commit 8530ac286a
1 changed files with 10 additions and 2 deletions
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12
sys/msdk/gstmsdkenc.c
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@ -107,6 +107,7 @@ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
/* External coding properties */
#define EC_PROPS_STRUCT_NAME "props"
#define EC_PROPS_EXTBRC "extbrc"
#define gst_msdkenc_parent_class parent_class
G_DEFINE_TYPE (GstMsdkEnc, gst_msdkenc, GST_TYPE_VIDEO_ENCODER);
@ -340,10 +341,14 @@ gst_msdkenc_ensure_extended_coding_options (GstMsdkEnc * thiz)
mfxExtCodingOption2 *option2 = &thiz->option2;
mfxExtCodingOption3 *option3 = &thiz->option3;
gchar *extbrc;
ext_coding_props_get_value (thiz, EC_PROPS_EXTBRC, &extbrc);
/* Fill ExtendedCodingOption2, set non-zero defaults too */
option2->Header.BufferId = MFX_EXTBUFF_CODING_OPTION2;
option2->Header.BufferSz = sizeof (thiz->option2);
option2->MBBRC = thiz->mbbrc;
option2->ExtBRC = coding_option_get_value (EC_PROPS_EXTBRC, extbrc);
option2->AdaptiveI = thiz->adaptive_i;
option2->AdaptiveB = thiz->adaptive_b;
option2->BitrateLimit = MFX_CODINGOPTION_OFF;
@ -2091,7 +2096,8 @@ gst_msdkenc_init (GstMsdkEnc * thiz)
thiz->adaptive_i = PROP_ADAPTIVE_I_DEFAULT;
thiz->adaptive_b = PROP_ADAPTIVE_B_DEFAULT;
thiz->ext_coding_props = gst_structure_new (EC_PROPS_STRUCT_NAME, NULL);
thiz->ext_coding_props = gst_structure_new (EC_PROPS_STRUCT_NAME,
EC_PROPS_EXTBRC, G_TYPE_STRING, "off", NULL);
}
/* gst_msdkenc_set_common_property:
@ -2443,11 +2449,13 @@ gst_msdkenc_install_common_properties (GstMsdkEncClass * klass)
*
* Supported properties:
* ```
* extbrc : External bitrate control
* String. Range: { auto, on, off } Default: off
* ```
*
* Example:
* ```
* ext-coding-props="props,"
* ext-coding-props="props,extbrc=on"
* ```
*
* Since: 1.20