qsv: Add AV1 encoder element

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2467>

subprojects/gst-plugins-bad/sys/qsv/gstqsvav1enc.cpp

@@ -0,0 +1,789 @@
+/* GStreamer
+ * Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstqsvav1enc.h"
+#include <vector>
+#include <string>
+#include <string.h>
+
+#ifdef G_OS_WIN32
+#include <gst/d3d11/gstd3d11.h>
+#else
+#include <gst/va/gstva.h>
+#endif
+
+GST_DEBUG_CATEGORY_STATIC (gst_qsv_av1_enc_debug);
+#define GST_CAT_DEFAULT gst_qsv_av1_enc_debug
+
+#define GST_TYPE_QSV_AV1_ENC_RATE_CONTROL (gst_qsv_av1_enc_rate_control_get_type ())
+static GType
+gst_qsv_av1_enc_rate_control_get_type (void)
+{
+  static GType rate_control_type = 0;
+  static const GEnumValue rate_controls[] = {
+    {MFX_RATECONTROL_CBR, "Constant Bitrate", "cbr"},
+    {MFX_RATECONTROL_VBR, "Variable Bitrate", "vbr"},
+    {MFX_RATECONTROL_CQP, "Constant Quantizer", "cqp"},
+    {0, nullptr, nullptr}
+  };
+
+  if (g_once_init_enter (&rate_control_type)) {
+    GType type =
+        g_enum_register_static ("GstQsvAV1EncRateControl", rate_controls);
+    g_once_init_leave (&rate_control_type, type);
+  }
+
+  return rate_control_type;
+}
+
+enum
+{
+  PROP_0,
+  PROP_QP_I,
+  PROP_QP_P,
+  PROP_GOP_SIZE,
+  PROP_REF_FRAMES,
+  PROP_BITRATE,
+  PROP_MAX_BITRATE,
+  PROP_RATE_CONTROL,
+};
+
+#define DEFAULT_QP 0
+#define DEFAULT_GOP_SIZE 0
+#define DEFAULT_REF_FRAMES 1
+#define DEFAULT_BITRATE 2000
+#define DEFAULT_MAX_BITRATE 0
+#define DEFAULT_RATE_CONTROL MFX_RATECONTROL_VBR
+
+typedef struct _GstQsvAV1EncClassData
+{
+  GstCaps *sink_caps;
+  GstCaps *src_caps;
+  guint impl_index;
+  gint64 adapter_luid;
+  gchar *display_path;
+  gchar *description;
+} GstQsvAV1EncClassData;
+
+typedef struct _GstQsvAV1Enc
+{
+  GstQsvEncoder parent;
+
+  mfxExtAV1ResolutionParam resolution_param;
+  mfxExtAV1BitstreamParam bitstream_param;
+
+  GMutex prop_lock;
+  /* protected by prop_lock */
+  gboolean bitrate_updated;
+  gboolean property_updated;
+
+  /* properties */
+  guint qp_i;
+  guint qp_p;
+  guint gop_size;
+  guint ref_frames;
+  guint bitrate;
+  guint max_bitrate;
+  mfxU16 rate_control;
+} GstQsvAV1Enc;
+
+typedef struct _GstQsvAV1EncClass
+{
+  GstQsvEncoderClass parent_class;
+} GstQsvAV1EncClass;
+
+static GstElementClass *parent_class = nullptr;
+
+#define GST_QSV_AV1_ENC(object) ((GstQsvAV1Enc *) (object))
+#define GST_QSV_AV1_ENC_GET_CLASS(object) \
+    (G_TYPE_INSTANCE_GET_CLASS ((object),G_TYPE_FROM_INSTANCE (object),GstQsvAV1EncClass))
+
+static void gst_qsv_av1_enc_finalize (GObject * object);
+static void gst_qsv_av1_enc_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_qsv_av1_enc_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static gboolean gst_qsv_av1_enc_set_format (GstQsvEncoder * encoder,
+    GstVideoCodecState * state, mfxVideoParam * param,
+    GPtrArray * extra_params);
+static gboolean gst_qsv_av1_enc_set_output_state (GstQsvEncoder * encoder,
+    GstVideoCodecState * state, mfxSession session);
+static GstQsvEncoderReconfigure
+gst_qsv_av1_enc_check_reconfigure (GstQsvEncoder * encoder, mfxSession session,
+    mfxVideoParam * param, GPtrArray * extra_params);
+
+static void
+gst_qsv_av1_enc_class_init (GstQsvAV1EncClass * klass, gpointer data)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+  GstQsvEncoderClass *qsvenc_class = GST_QSV_ENCODER_CLASS (klass);
+  GstQsvAV1EncClassData *cdata = (GstQsvAV1EncClassData *) data;
+
+  qsvenc_class->codec_id = MFX_CODEC_AV1;
+  qsvenc_class->impl_index = cdata->impl_index;
+  qsvenc_class->adapter_luid = cdata->adapter_luid;
+  qsvenc_class->display_path = cdata->display_path;
+
+  object_class->finalize = gst_qsv_av1_enc_finalize;
+  object_class->set_property = gst_qsv_av1_enc_set_property;
+  object_class->get_property = gst_qsv_av1_enc_get_property;
+
+  g_object_class_install_property (object_class, PROP_QP_I,
+      g_param_spec_uint ("qp-i", "QP I",
+          "Constant quantizer for I frames (0: default)",
+          0, 255, DEFAULT_QP, (GParamFlags)
+          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+  g_object_class_install_property (object_class, PROP_QP_P,
+      g_param_spec_uint ("qp-p", "QP P",
+          "Constant quantizer for P frames (0: default)",
+          0, 255, DEFAULT_QP, (GParamFlags)
+          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+  g_object_class_install_property (object_class, PROP_GOP_SIZE,
+      g_param_spec_uint ("gop-size", "GOP Size",
+          "Number of pictures within a GOP (0: unspecified)",
+          0, G_MAXINT, DEFAULT_GOP_SIZE, (GParamFlags)
+          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+  g_object_class_install_property (object_class, PROP_REF_FRAMES,
+      g_param_spec_uint ("ref-frames", "Reference Frames",
+          "Number of reference frames (0: unspecified)",
+          0, 3, DEFAULT_REF_FRAMES, (GParamFlags)
+          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+  g_object_class_install_property (object_class, PROP_BITRATE,
+      g_param_spec_uint ("bitrate", "Bitrate",
+          "Target bitrate in kbit/sec, Ignored when selected rate-control mode "
+          "is constant QP variants (i.e., \"cqp\" and \"icq\")",
+          0, G_MAXUINT16, DEFAULT_BITRATE, (GParamFlags)
+          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+  g_object_class_install_property (object_class, PROP_MAX_BITRATE,
+      g_param_spec_uint ("max-bitrate", "Max Bitrate",
+          "Maximum bitrate in kbit/sec, Ignored when selected rate-control mode "
+          "is constant QP variants (i.e., \"cqp\" and \"icq\")",
+          0, G_MAXUINT16, DEFAULT_MAX_BITRATE, (GParamFlags)
+          (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+  g_object_class_install_property (object_class, PROP_RATE_CONTROL,
+      g_param_spec_enum ("rate-control", "Rate Control",
+          "Rate Control Method", GST_TYPE_QSV_AV1_ENC_RATE_CONTROL,
+          DEFAULT_RATE_CONTROL,
+          (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+
+  parent_class = (GstElementClass *) g_type_class_peek_parent (klass);
+
+#ifdef G_OS_WIN32
+  std::string long_name = "Intel Quick Sync Video " +
+      std::string (cdata->description) + " AV1 Encoder";
+
+  gst_element_class_set_metadata (element_class, long_name.c_str (),
+      "Codec/Encoder/Video/Hardware",
+      "Intel Quick Sync Video AV1 Encoder",
+      "Seungha Yang <seungha@centricular.com>");
+#else
+  gst_element_class_set_static_metadata (element_class,
+      "Intel Quick Sync Video AV1 Encoder",
+      "Codec/Encoder/Video/Hardware",
+      "Intel Quick Sync Video AV1 Encoder",
+      "Seungha Yang <seungha@centricular.com>");
+#endif
+
+  gst_element_class_add_pad_template (element_class,
+      gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+          cdata->sink_caps));
+  gst_element_class_add_pad_template (element_class,
+      gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+          cdata->src_caps));
+
+  qsvenc_class->set_format = GST_DEBUG_FUNCPTR (gst_qsv_av1_enc_set_format);
+  qsvenc_class->set_output_state =
+      GST_DEBUG_FUNCPTR (gst_qsv_av1_enc_set_output_state);
+  qsvenc_class->check_reconfigure =
+      GST_DEBUG_FUNCPTR (gst_qsv_av1_enc_check_reconfigure);
+
+  gst_caps_unref (cdata->sink_caps);
+  gst_caps_unref (cdata->src_caps);
+  g_free (cdata->description);
+  g_free (cdata);
+}
+
+static void
+gst_qsv_av1_enc_init (GstQsvAV1Enc * self)
+{
+  self->qp_i = DEFAULT_QP;
+  self->qp_p = DEFAULT_QP;
+  self->gop_size = DEFAULT_GOP_SIZE;
+  self->ref_frames = DEFAULT_REF_FRAMES;
+  self->bitrate = DEFAULT_BITRATE;
+  self->max_bitrate = DEFAULT_MAX_BITRATE;
+  self->rate_control = DEFAULT_RATE_CONTROL;
+
+  g_mutex_init (&self->prop_lock);
+}
+
+static void
+gst_qsv_av1_enc_finalize (GObject * object)
+{
+  GstQsvAV1Enc *self = GST_QSV_AV1_ENC (object);
+
+  g_mutex_clear (&self->prop_lock);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_qsv_av1_enc_check_update_uint (GstQsvAV1Enc * self, guint * old_val,
+    guint new_val, gboolean is_bitrate_param)
+{
+  if (*old_val == new_val)
+    return;
+
+  g_mutex_lock (&self->prop_lock);
+  *old_val = new_val;
+  if (is_bitrate_param)
+    self->bitrate_updated = TRUE;
+  else
+    self->property_updated = TRUE;
+  g_mutex_unlock (&self->prop_lock);
+}
+
+static void
+gst_qsv_av1_enc_check_update_enum (GstQsvAV1Enc * self, mfxU16 * old_val,
+    gint new_val)
+{
+  if (*old_val == (mfxU16) new_val)
+    return;
+
+  g_mutex_lock (&self->prop_lock);
+  *old_val = (mfxU16) new_val;
+  self->property_updated = TRUE;
+  g_mutex_unlock (&self->prop_lock);
+}
+
+static void
+gst_qsv_av1_enc_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstQsvAV1Enc *self = GST_QSV_AV1_ENC (object);
+
+  switch (prop_id) {
+    case PROP_QP_I:
+      gst_qsv_av1_enc_check_update_uint (self, &self->qp_i,
+          g_value_get_uint (value), TRUE);
+      break;
+    case PROP_QP_P:
+      gst_qsv_av1_enc_check_update_uint (self, &self->qp_p,
+          g_value_get_uint (value), TRUE);
+      break;
+    case PROP_GOP_SIZE:
+      gst_qsv_av1_enc_check_update_uint (self, &self->gop_size,
+          g_value_get_uint (value), FALSE);
+      break;
+    case PROP_REF_FRAMES:
+      gst_qsv_av1_enc_check_update_uint (self, &self->ref_frames,
+          g_value_get_uint (value), FALSE);
+      break;
+    case PROP_BITRATE:
+      gst_qsv_av1_enc_check_update_uint (self, &self->bitrate,
+          g_value_get_uint (value), TRUE);
+      break;
+    case PROP_MAX_BITRATE:
+      gst_qsv_av1_enc_check_update_uint (self, &self->max_bitrate,
+          g_value_get_uint (value), TRUE);
+      break;
+    case PROP_RATE_CONTROL:
+      gst_qsv_av1_enc_check_update_enum (self, &self->rate_control,
+          g_value_get_enum (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_qsv_av1_enc_get_property (GObject * object, guint prop_id, GValue * value,
+    GParamSpec * pspec)
+{
+  GstQsvAV1Enc *self = GST_QSV_AV1_ENC (object);
+
+  switch (prop_id) {
+    case PROP_QP_I:
+      g_value_set_uint (value, self->qp_i);
+      break;
+    case PROP_QP_P:
+      g_value_set_uint (value, self->qp_p);
+      break;
+    case PROP_GOP_SIZE:
+      g_value_set_uint (value, self->gop_size);
+      break;
+    case PROP_REF_FRAMES:
+      g_value_set_uint (value, self->ref_frames);
+      break;
+    case PROP_BITRATE:
+      g_value_set_uint (value, self->bitrate);
+      break;
+    case PROP_MAX_BITRATE:
+      g_value_set_uint (value, self->max_bitrate);
+      break;
+    case PROP_RATE_CONTROL:
+      g_value_set_enum (value, self->rate_control);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_qsv_av1_enc_init_extra_params (GstQsvAV1Enc * self)
+{
+  memset (&self->resolution_param, 0, sizeof (mfxExtAV1ResolutionParam));
+  memset (&self->bitstream_param, 0, sizeof (mfxExtAV1BitstreamParam));
+
+  self->resolution_param.Header.BufferId = MFX_EXTBUFF_AV1_RESOLUTION_PARAM;
+  self->resolution_param.Header.BufferSz = sizeof (mfxExtAV1ResolutionParam);
+
+  self->bitstream_param.Header.BufferId = MFX_EXTBUFF_AV1_BITSTREAM_PARAM;
+  self->bitstream_param.Header.BufferSz = sizeof (mfxExtAV1BitstreamParam);
+}
+
+static void
+gst_qsv_av1_enc_set_bitrate (GstQsvAV1Enc * self, mfxVideoParam * param)
+{
+  switch (param->mfx.RateControlMethod) {
+    case MFX_RATECONTROL_CBR:
+      param->mfx.TargetKbps = param->mfx.MaxKbps = self->bitrate;
+      param->mfx.BRCParamMultiplier = 1;
+      break;
+    case MFX_RATECONTROL_VBR:
+      param->mfx.TargetKbps = self->bitrate;
+      param->mfx.MaxKbps = self->max_bitrate;
+      param->mfx.BRCParamMultiplier = 1;
+      break;
+    case MFX_RATECONTROL_CQP:
+      param->mfx.QPI = self->qp_i;
+      param->mfx.QPP = self->qp_p;
+      break;
+    default:
+      GST_WARNING_OBJECT (self,
+          "Unhandled rate-control method %d", self->rate_control);
+      break;
+  }
+}
+
+static gboolean
+gst_qsv_av1_enc_set_format (GstQsvEncoder * encoder,
+    GstVideoCodecState * state, mfxVideoParam * param, GPtrArray * extra_params)
+{
+  GstQsvAV1Enc *self = GST_QSV_AV1_ENC (encoder);
+  GstVideoInfo *info = &state->info;
+  mfxFrameInfo *frame_info;
+  mfxExtAV1BitstreamParam *bs_param;
+  mfxExtAV1ResolutionParam *res_param;
+
+  frame_info = &param->mfx.FrameInfo;
+
+  /* QSV expects this resolution, but actual coded frame resolution will be
+   * signalled via mfxExtAV1Param */
+  frame_info->Width = frame_info->CropW = GST_ROUND_UP_16 (info->width);
+  frame_info->Height = frame_info->CropH = GST_ROUND_UP_16 (info->height);
+
+  frame_info->PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
+
+  if (GST_VIDEO_INFO_FPS_N (info) > 0 && GST_VIDEO_INFO_FPS_D (info) > 0) {
+    frame_info->FrameRateExtN = GST_VIDEO_INFO_FPS_N (info);
+    frame_info->FrameRateExtD = GST_VIDEO_INFO_FPS_D (info);
+  } else {
+    /* HACK: Same as x264enc */
+    frame_info->FrameRateExtN = 25;
+    frame_info->FrameRateExtD = 1;
+  }
+
+  frame_info->AspectRatioW = GST_VIDEO_INFO_PAR_N (info);
+  frame_info->AspectRatioH = GST_VIDEO_INFO_PAR_D (info);
+
+  switch (GST_VIDEO_INFO_FORMAT (info)) {
+    case GST_VIDEO_FORMAT_NV12:
+      frame_info->ChromaFormat = MFX_CHROMAFORMAT_YUV420;
+      frame_info->FourCC = MFX_FOURCC_NV12;
+      frame_info->BitDepthLuma = 8;
+      frame_info->BitDepthChroma = 8;
+      frame_info->Shift = 0;
+      break;
+    case GST_VIDEO_FORMAT_P010_10LE:
+      frame_info->ChromaFormat = MFX_CHROMAFORMAT_YUV420;
+      frame_info->FourCC = MFX_FOURCC_P010;
+      frame_info->BitDepthLuma = 10;
+      frame_info->BitDepthChroma = 10;
+      frame_info->Shift = 1;
+      break;
+    default:
+      GST_ERROR_OBJECT (self, "Unexpected format %s",
+          gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
+      return FALSE;
+  }
+
+  gst_qsv_av1_enc_init_extra_params (self);
+  res_param = &self->resolution_param;
+  bs_param = &self->bitstream_param;
+
+  res_param->FrameWidth = GST_VIDEO_INFO_WIDTH (info);
+  res_param->FrameHeight = GST_VIDEO_INFO_HEIGHT (info);
+
+  /* We will always output raw AV1 frames */
+  bs_param->WriteIVFHeaders = MFX_CODINGOPTION_OFF;
+
+  g_mutex_lock (&self->prop_lock);
+  param->mfx.CodecId = MFX_CODEC_AV1;
+  param->mfx.CodecProfile = MFX_PROFILE_AV1_MAIN;
+  param->mfx.GopRefDist = 1;
+  param->mfx.GopPicSize = self->gop_size;
+  param->mfx.RateControlMethod = self->rate_control;
+  param->mfx.NumRefFrame = self->ref_frames;
+
+  gst_qsv_av1_enc_set_bitrate (self, param);
+
+  g_ptr_array_add (extra_params, res_param);
+  g_ptr_array_add (extra_params, bs_param);
+
+  param->ExtParam = (mfxExtBuffer **) extra_params->pdata;
+  param->NumExtParam = extra_params->len;
+
+  self->bitrate_updated = FALSE;
+  self->property_updated = FALSE;
+
+  g_mutex_unlock (&self->prop_lock);
+
+  return TRUE;
+}
+
+static gboolean
+gst_qsv_av1_enc_set_output_state (GstQsvEncoder * encoder,
+    GstVideoCodecState * state, mfxSession session)
+{
+  GstQsvAV1Enc *self = GST_QSV_AV1_ENC (encoder);
+  GstCaps *caps;
+  GstTagList *tags;
+  GstVideoCodecState *out_state;
+  guint bitrate, max_bitrate;
+  mfxVideoParam param;
+  mfxStatus status;
+
+  memset (&param, 0, sizeof (mfxVideoParam));
+  status = MFXVideoENCODE_GetVideoParam (session, &param);
+  if (status < MFX_ERR_NONE) {
+    GST_ERROR_OBJECT (self, "Failed to get video param %d (%s)",
+        QSV_STATUS_ARGS (status));
+    return FALSE;
+  } else if (status != MFX_ERR_NONE) {
+    GST_WARNING_OBJECT (self, "GetVideoParam returned warning %d (%s)",
+        QSV_STATUS_ARGS (status));
+  }
+
+  caps = gst_caps_from_string ("video/x-av1, profile = (string) main, "
+      "alignment= (string) tu");
+  out_state = gst_video_encoder_set_output_state (GST_VIDEO_ENCODER (encoder),
+      caps, state);
+  gst_video_codec_state_unref (out_state);
+
+  tags = gst_tag_list_new_empty ();
+  gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_ENCODER, "qsvav1enc",
+      nullptr);
+
+  switch (param.mfx.RateControlMethod) {
+    case MFX_RATECONTROL_CQP:
+      /* We don't know target/max bitrate in this case */
+      break;
+    default:
+      max_bitrate = (guint) param.mfx.MaxKbps;
+      bitrate = (guint) param.mfx.TargetKbps;
+      if (bitrate > 0) {
+        gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
+            GST_TAG_NOMINAL_BITRATE, bitrate * 1000, nullptr);
+      }
+
+      if (max_bitrate > 0) {
+        gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
+            GST_TAG_MAXIMUM_BITRATE, max_bitrate * 1000, nullptr);
+      }
+      break;
+  }
+
+  gst_video_encoder_merge_tags (GST_VIDEO_ENCODER (encoder),
+      tags, GST_TAG_MERGE_REPLACE);
+  gst_tag_list_unref (tags);
+
+  return TRUE;
+}
+
+static GstQsvEncoderReconfigure
+gst_qsv_av1_enc_check_reconfigure (GstQsvEncoder * encoder, mfxSession session,
+    mfxVideoParam * param, GPtrArray * extra_params)
+{
+  GstQsvAV1Enc *self = GST_QSV_AV1_ENC (encoder);
+  GstQsvEncoderReconfigure ret = GST_QSV_ENCODER_RECONFIGURE_NONE;
+
+  g_mutex_lock (&self->prop_lock);
+  if (self->property_updated) {
+    ret = GST_QSV_ENCODER_RECONFIGURE_FULL;
+    goto done;
+  }
+
+  if (self->bitrate_updated) {
+    /* AV1 does not support query with MFX_EXTBUFF_ENCODER_RESET_OPTION
+     * Just return GST_QSV_ENCODER_RECONFIGURE_BITRATE here.
+     * Baseclass will care error */
+    gst_qsv_av1_enc_set_bitrate (self, param);
+
+    ret = GST_QSV_ENCODER_RECONFIGURE_BITRATE;
+  }
+
+done:
+  self->property_updated = FALSE;
+  self->bitrate_updated = FALSE;
+  g_mutex_unlock (&self->prop_lock);
+
+  return ret;
+}
+
+typedef struct
+{
+  guint width;
+  guint height;
+} Resolution;
+
+void
+gst_qsv_av1_enc_register (GstPlugin * plugin, guint rank, guint impl_index,
+    GstObject * device, mfxSession session)
+{
+  mfxVideoParam param;
+  mfxInfoMFX *mfx;
+  static const Resolution resolutions_to_check[] = {
+    {1280, 720}, {1920, 1088}, {2560, 1440}, {3840, 2160}, {4096, 2160},
+    {7680, 4320}, {8192, 4320}
+  };
+  std::vector < std::string > supported_formats;
+  Resolution max_resolution;
+  mfxExtAV1ResolutionParam resolution_param;
+  mfxExtAV1BitstreamParam bitstream_param;
+  mfxExtBuffer *ext_bufs[2];
+
+  GST_DEBUG_CATEGORY_INIT (gst_qsv_av1_enc_debug, "qsvav1enc", 0, "qsvav1enc");
+
+  memset (&param, 0, sizeof (mfxVideoParam));
+  memset (&max_resolution, 0, sizeof (Resolution));
+  memset (&resolution_param, 0, sizeof (mfxExtAV1ResolutionParam));
+  memset (&bitstream_param, 0, sizeof (mfxExtAV1BitstreamParam));
+
+  resolution_param.Header.BufferId = MFX_EXTBUFF_AV1_RESOLUTION_PARAM;
+  resolution_param.Header.BufferSz = sizeof (mfxExtAV1ResolutionParam);
+
+  bitstream_param.Header.BufferId = MFX_EXTBUFF_AV1_BITSTREAM_PARAM;
+  bitstream_param.Header.BufferSz = sizeof (mfxExtAV1BitstreamParam);
+  bitstream_param.WriteIVFHeaders = MFX_CODINGOPTION_OFF;
+
+  ext_bufs[0] = (mfxExtBuffer *) & resolution_param;
+  ext_bufs[1] = (mfxExtBuffer *) & bitstream_param;
+
+  param.AsyncDepth = 4;
+  param.IOPattern = MFX_IOPATTERN_IN_VIDEO_MEMORY;
+
+  mfx = &param.mfx;
+  mfx->LowPower = MFX_CODINGOPTION_UNKNOWN;
+  mfx->CodecId = MFX_CODEC_AV1;
+  mfx->CodecProfile = MFX_PROFILE_AV1_MAIN;
+
+  mfx->FrameInfo.Width = mfx->FrameInfo.CropW = GST_ROUND_UP_16 (320);
+  mfx->FrameInfo.Height = mfx->FrameInfo.CropH = GST_ROUND_UP_16 (240);
+  mfx->FrameInfo.FrameRateExtN = 30;
+  mfx->FrameInfo.FrameRateExtD = 1;
+  mfx->FrameInfo.AspectRatioW = 1;
+  mfx->FrameInfo.AspectRatioH = 1;
+  mfx->FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
+
+  param.NumExtParam = 2;
+  param.ExtParam = ext_bufs;
+
+  resolution_param.FrameWidth = 320;
+  resolution_param.FrameHeight = 240;
+
+  /* MAIN profile covers NV12 and P010 */
+  mfx->FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
+  mfx->FrameInfo.FourCC = MFX_FOURCC_NV12;
+  mfx->FrameInfo.BitDepthLuma = 8;
+  mfx->FrameInfo.BitDepthChroma = 8;
+  mfx->FrameInfo.Shift = 0;
+
+  if (MFXVideoENCODE_Query (session, &param, &param) == MFX_ERR_NONE)
+    supported_formats.push_back ("NV12");
+
+  mfx->FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
+  mfx->FrameInfo.FourCC = MFX_FOURCC_P010;
+  mfx->FrameInfo.BitDepthLuma = 10;
+  mfx->FrameInfo.BitDepthChroma = 10;
+  mfx->FrameInfo.Shift = 1;
+
+  if (MFXVideoENCODE_Query (session, &param, &param) == MFX_ERR_NONE)
+    supported_formats.push_back ("P010_10LE");
+
+  if (supported_formats.empty ()) {
+    GST_INFO_OBJECT (device, "Device doesn't support AV1 encoding");
+    return;
+  }
+
+  mfx->FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
+  mfx->FrameInfo.FourCC = MFX_FOURCC_NV12;
+  mfx->FrameInfo.BitDepthLuma = 8;
+  mfx->FrameInfo.BitDepthChroma = 8;
+  mfx->FrameInfo.Shift = 0;
+
+  /* Check max-resolution */
+  for (guint i = 0; i < G_N_ELEMENTS (resolutions_to_check); i++) {
+    mfx->FrameInfo.Width = mfx->FrameInfo.CropW =
+        GST_ROUND_UP_16 (resolutions_to_check[i].width);
+    mfx->FrameInfo.Height = mfx->FrameInfo.CropH =
+        GST_ROUND_UP_16 (resolutions_to_check[i].height);
+
+    resolution_param.FrameWidth = resolutions_to_check[i].width;
+    resolution_param.FrameHeight = resolutions_to_check[i].height;
+
+    bitstream_param.WriteIVFHeaders = MFX_CODINGOPTION_OFF;
+
+    if (MFXVideoENCODE_Query (session, &param, &param) != MFX_ERR_NONE)
+      break;
+
+    max_resolution.width = resolutions_to_check[i].width;
+    max_resolution.height = resolutions_to_check[i].height;
+  }
+
+  GST_INFO ("Maximum supported resolution: %dx%d",
+      max_resolution.width, max_resolution.height);
+
+  /* TODO: check supported rate-control methods and expose only supported
+   * methods, since the device might not be able to support some of them */
+
+  /* To cover both landscape and portrait,
+   * select max value (width in this case) */
+  guint resolution = MAX (max_resolution.width, max_resolution.height);
+  std::string sink_caps_str = "video/x-raw";
+
+  sink_caps_str += ", width=(int) [ 16, " + std::to_string (resolution) + " ]";
+  sink_caps_str += ", height=(int) [ 16, " + std::to_string (resolution) + " ]";
+
+  /* *INDENT-OFF* */
+  if (supported_formats.size () > 1) {
+    sink_caps_str += ", format=(string) { ";
+    bool first = true;
+    for (const auto &iter: supported_formats) {
+      if (!first) {
+        sink_caps_str += ", ";
+      }
+
+      sink_caps_str += iter;
+      first = false;
+    }
+    sink_caps_str += " }";
+  } else {
+    sink_caps_str += ", format=(string) " + supported_formats[0];
+  }
+  /* *INDENT-ON* */
+
+  GstCaps *sink_caps = gst_caps_from_string (sink_caps_str.c_str ());
+
+  /* TODO: Add support for VA */
+#ifdef G_OS_WIN32
+  GstCaps *d3d11_caps = gst_caps_copy (sink_caps);
+  GstCapsFeatures *caps_features =
+      gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, nullptr);
+  gst_caps_set_features_simple (d3d11_caps, caps_features);
+  gst_caps_append (d3d11_caps, sink_caps);
+  sink_caps = d3d11_caps;
+#else
+  GstCaps *va_caps = gst_caps_copy (sink_caps);
+  GstCapsFeatures *caps_features =
+      gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_VA, nullptr);
+  gst_caps_set_features_simple (va_caps, caps_features);
+  gst_caps_append (va_caps, sink_caps);
+  sink_caps = va_caps;
+#endif
+
+  std::string src_caps_str = "video/x-av1, profile = (string) main, "
+      "alignment = (string) tu";
+  src_caps_str += ", width=(int) [ 16, " + std::to_string (resolution) + " ]";
+  src_caps_str += ", height=(int) [ 16, " + std::to_string (resolution) + " ]";
+
+  GstCaps *src_caps = gst_caps_from_string (src_caps_str.c_str ());
+
+  GST_MINI_OBJECT_FLAG_SET (sink_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
+  GST_MINI_OBJECT_FLAG_SET (src_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
+
+  GstQsvAV1EncClassData *cdata = g_new0 (GstQsvAV1EncClassData, 1);
+  cdata->sink_caps = sink_caps;
+  cdata->src_caps = src_caps;
+  cdata->impl_index = impl_index;
+
+#ifdef G_OS_WIN32
+  g_object_get (device, "adapter-luid", &cdata->adapter_luid,
+      "description", &cdata->description, nullptr);
+#else
+  g_object_get (device, "path", &cdata->display_path, nullptr);
+#endif
+
+  GType type;
+  gchar *type_name;
+  gchar *feature_name;
+  GTypeInfo type_info = {
+    sizeof (GstQsvAV1EncClass),
+    nullptr,
+    nullptr,
+    (GClassInitFunc) gst_qsv_av1_enc_class_init,
+    nullptr,
+    cdata,
+    sizeof (GstQsvAV1Enc),
+    0,
+    (GInstanceInitFunc) gst_qsv_av1_enc_init,
+  };
+
+  type_name = g_strdup ("GstQsvAV1Enc");
+  feature_name = g_strdup ("qsvav1enc");
+
+  gint index = 0;
+  while (g_type_from_name (type_name)) {
+    index++;
+    g_free (type_name);
+    g_free (feature_name);
+    type_name = g_strdup_printf ("GstQsvAV1Device%dEnc", index);
+    feature_name = g_strdup_printf ("qsvav1device%denc", index);
+  }
+
+  type = g_type_register_static (GST_TYPE_QSV_ENCODER, type_name, &type_info,
+      (GTypeFlags) 0);
+
+  if (rank > 0 && index != 0)
+    rank--;
+
+  if (!gst_element_register (plugin, feature_name, rank, type))
+    GST_WARNING ("Failed to register plugin '%s'", type_name);
+
+  g_free (type_name);
+  g_free (feature_name);
+}

subprojects/gst-plugins-bad/sys/qsv/gstqsvav1enc.h

@@ -0,0 +1,34 @@
+/* GStreamer
+ * Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include "gstqsvencoder.h"
+
+G_BEGIN_DECLS
+
+void gst_qsv_av1_enc_register (GstPlugin * plugin,
+                               guint rank,
+                               guint impl_index,
+                               GstObject * device,
+                               mfxSession session);
+
+G_END_DECLS

subprojects/gst-plugins-bad/sys/qsv/meson.build

@@ -1,5 +1,6 @@
 qsv_sources = [
   'gstqsvallocator.cpp',
+  'gstqsvav1enc.cpp',
   'gstqsvdecoder.cpp',
   'gstqsvencoder.cpp',
   'gstqsvh264dec.cpp',

subprojects/gst-plugins-bad/sys/qsv/plugin.cpp

@@ -23,13 +23,14 @@
 
 #include <gst/gst.h>
 #include <mfx.h>
-#include "gstqsvutils.h"
+#include "gstqsvav1enc.h"
 #include "gstqsvh264dec.h"
 #include "gstqsvh264enc.h"
 #include "gstqsvh265dec.h"
 #include "gstqsvh265enc.h"
 #include "gstqsvjpegenc.h"
 #include "gstqsvvp9enc.h"
+#include "gstqsvutils.h"
 #include <string.h>
 
 #ifdef G_OS_WIN32
@@ -243,6 +244,7 @@ plugin_init (GstPlugin * plugin)
     gst_qsv_h265_enc_register (plugin, GST_RANK_NONE, i, device, session);
     gst_qsv_jpeg_enc_register (plugin, GST_RANK_NONE, i, device, session);
     gst_qsv_vp9_enc_register (plugin, GST_RANK_NONE, i, device, session);
+    gst_qsv_av1_enc_register (plugin, GST_RANK_NONE, i, device, session);
 
   next:
     MFXDispReleaseImplDescription (loader, desc);

subprojects/gst-plugins-bad/tests/examples/qsv/qsvenc-dynamic-reconfigure.c

@@ -38,7 +38,8 @@ typedef enum
 {
   CODEC_AVC,
   CODEC_HEVC,
-  CODEC_VP9
+  CODEC_VP9,
+  CODEC_AV1,
 } Codec;
 
 static GMainLoop *loop = NULL;
@@ -435,6 +436,11 @@ main (gint argc, gchar ** argv)
     max_qp = 255;
     qp_i = 128;
     qp_p = 128;
+  } else if (g_strcmp0 (encoder_name, "qsvav1enc") == 0) {
+    codec = CODEC_AV1;
+    max_qp = 255;
+    qp_i = 128;
+    qp_p = 128;
   } else {
     gst_printerrln ("Unexpected encoder %s", encoder_name);
     exit (1);
@@ -472,7 +478,7 @@ main (gint argc, gchar ** argv)
 
   g_object_set (enc, "bitrate", bitrate, "max-bitrate", max_bitrate,
       "qp-i", qp_i, "qp-p", qp_p, "gop-size", 30, NULL);
-  if (codec != CODEC_VP9)
+  if (codec != CODEC_VP9 && codec != CODEC_AV1)
     g_object_set (enc, "qp-b", qp_b, NULL);
 
   gst_util_set_object_arg (G_OBJECT (enc), "rate-control", rate_control);
@@ -498,6 +504,13 @@ main (gint argc, gchar ** argv)
     MAKE_ELEMENT_AND_ADD (dec, "d3d11vp9dec");
 #else
     MAKE_ELEMENT_AND_ADD (dec, "vavp9dec");
+#endif
+  } else if (g_strrstr (encoder_name, "av1")) {
+    MAKE_ELEMENT_AND_ADD (parser, "av1parse");
+#ifdef G_OS_WIN32
+    MAKE_ELEMENT_AND_ADD (dec, "d3d11av1dec");
+#else
+    MAKE_ELEMENT_AND_ADD (dec, "vaav1dec");
 #endif
   } else {
     if (bframes > 0)