+static int qsv_retrieve_enc_vp9_params(AVCodecContext *avctx, QSVEncContext *q)
+{
+ int ret = 0;
+#if QSV_HAVE_EXT_VP9_PARAM
+ mfxExtVP9Param vp9_extend_buf = {
+ .Header.BufferId = MFX_EXTBUFF_VP9_PARAM,
+ .Header.BufferSz = sizeof(vp9_extend_buf),
+ };
+#endif
+
+#if QSV_HAVE_CO2
+ mfxExtCodingOption2 co2 = {
+ .Header.BufferId = MFX_EXTBUFF_CODING_OPTION2,
+ .Header.BufferSz = sizeof(co2),
+ };
+#endif
+
+#if QSV_HAVE_CO3
+ mfxExtCodingOption3 co3 = {
+ .Header.BufferId = MFX_EXTBUFF_CODING_OPTION3,
+ .Header.BufferSz = sizeof(co3),
+ };
+#endif
+
+ mfxExtBuffer *ext_buffers[] = {
+#if QSV_HAVE_EXT_VP9_PARAM
+ (mfxExtBuffer*)&vp9_extend_buf,
+#endif
+#if QSV_HAVE_CO2
+ (mfxExtBuffer*)&co2,
+#endif
+#if QSV_HAVE_CO3
+ (mfxExtBuffer*)&co3,
+#endif
+ };
+
+ q->param.ExtParam = ext_buffers;
+ q->param.NumExtParam = FF_ARRAY_ELEMS(ext_buffers);
+
+ ret = MFXVideoENCODE_GetVideoParam(q->session, &q->param);
+ if (ret < 0)
+ return ff_qsv_print_error(avctx, ret,
+ "Error calling GetVideoParam");
+
+ q->packet_size = q->param.mfx.BufferSizeInKB * q->param.mfx.BRCParamMultiplier * 1000;
+
+ return 0;
+}
+