avcodec: add D3D12VA hardware HEVC encoder

This implementation is based on D3D12 Video Encoding Spec:
https://microsoft.github.io/DirectX-Specs/d3d/D3D12VideoEncoding.html

Sample command line for transcoding:
ffmpeg.exe -hwaccel d3d12va -hwaccel_output_format d3d12 -i input.mp4
-c:v hevc_d3d12va output.mp4

Signed-off-by: Tong Wu <tong1.wu@intel.com>

1 files changed, 1007 insertions, 0 deletions

diff --git a/libavcodec/d3d12va_encode_hevc.c b/libavcodec/d3d12va_encode_hevc.c
new file mode 100644
index 0000000000..24823b3c56
--- /dev/null
+++ b/libavcodec/d3d12va_encode_hevc.c
@@ -0,0 +1,1007 @@
+/*
+ * Direct3D 12 HW acceleration video encoder
+ *
+ * Copyright (c) 2024 Intel Corporation
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "libavutil/opt.h"
+#include "libavutil/common.h"
+#include "libavutil/mem.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/hwcontext_d3d12va_internal.h"
+
+#include "avcodec.h"
+#include "cbs.h"
+#include "cbs_h265.h"
+#include "h2645data.h"
+#include "h265_profile_level.h"
+#include "codec_internal.h"
+#include "d3d12va_encode.h"
+
+typedef struct D3D12VAEncodeHEVCPicture {
+    int pic_order_cnt;
+    int64_t last_idr_frame;
+} D3D12VAEncodeHEVCPicture;
+
+typedef struct D3D12VAEncodeHEVCContext {
+    D3D12VAEncodeContext common;
+
+    // User options.
+    int qp;
+    int profile;
+    int tier;
+    int level;
+
+    // Writer structures.
+    H265RawVPS   raw_vps;
+    H265RawSPS   raw_sps;
+    H265RawPPS   raw_pps;
+
+    CodedBitstreamContext *cbc;
+    CodedBitstreamFragment current_access_unit;
+} D3D12VAEncodeHEVCContext;
+
+typedef struct D3D12VAEncodeHEVCLevel {
+    int level;
+    D3D12_VIDEO_ENCODER_LEVELS_HEVC d3d12_level;
+} D3D12VAEncodeHEVCLevel;
+
+static const D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC hevc_config_support_sets[] =
+{
+    {
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
+        3,
+        3,
+    },
+    {
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
+        0,
+        0,
+    },
+    {
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
+        2,
+        2,
+    },
+    {
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_64x64,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
+        2,
+        2,
+    },
+    {
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_NONE,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_64x64,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4,
+        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32,
+        4,
+        4,
+    },
+};
+
+static const D3D12VAEncodeHEVCLevel hevc_levels[] = {
+    { 30,  D3D12_VIDEO_ENCODER_LEVELS_HEVC_1  },
+    { 60,  D3D12_VIDEO_ENCODER_LEVELS_HEVC_2  },
+    { 63,  D3D12_VIDEO_ENCODER_LEVELS_HEVC_21 },
+    { 90,  D3D12_VIDEO_ENCODER_LEVELS_HEVC_3  },
+    { 93,  D3D12_VIDEO_ENCODER_LEVELS_HEVC_31 },
+    { 120, D3D12_VIDEO_ENCODER_LEVELS_HEVC_4  },
+    { 123, D3D12_VIDEO_ENCODER_LEVELS_HEVC_41 },
+    { 150, D3D12_VIDEO_ENCODER_LEVELS_HEVC_5  },
+    { 153, D3D12_VIDEO_ENCODER_LEVELS_HEVC_51 },
+    { 156, D3D12_VIDEO_ENCODER_LEVELS_HEVC_52 },
+    { 180, D3D12_VIDEO_ENCODER_LEVELS_HEVC_6  },
+    { 183, D3D12_VIDEO_ENCODER_LEVELS_HEVC_61 },
+    { 186, D3D12_VIDEO_ENCODER_LEVELS_HEVC_62 },
+};
+
+static const D3D12_VIDEO_ENCODER_PROFILE_HEVC profile_main   = D3D12_VIDEO_ENCODER_PROFILE_HEVC_MAIN;
+static const D3D12_VIDEO_ENCODER_PROFILE_HEVC profile_main10 = D3D12_VIDEO_ENCODER_PROFILE_HEVC_MAIN10;
+
+#define D3D_PROFILE_DESC(name) \
+    { sizeof(D3D12_VIDEO_ENCODER_PROFILE_HEVC), { .pHEVCProfile = (D3D12_VIDEO_ENCODER_PROFILE_HEVC *)&profile_ ## name } }
+static const D3D12VAEncodeProfile d3d12va_encode_hevc_profiles[] = {
+    { AV_PROFILE_HEVC_MAIN,     8, 3, 1, 1, D3D_PROFILE_DESC(main)   },
+    { AV_PROFILE_HEVC_MAIN_10, 10, 3, 1, 1, D3D_PROFILE_DESC(main10) },
+    { AV_PROFILE_UNKNOWN },
+};
+
+static uint8_t d3d12va_encode_hevc_map_cusize(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE cusize)
+{
+    switch (cusize) {
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_8x8:   return 8;
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_16x16: return 16;
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_32x32: return 32;
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_CUSIZE_64x64: return 64;
+        default: av_assert0(0);
+    }
+    return 0;
+}
+
+static uint8_t d3d12va_encode_hevc_map_tusize(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE tusize)
+{
+    switch (tusize) {
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_4x4:   return 4;
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_8x8:   return 8;
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_16x16: return 16;
+        case D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_TUSIZE_32x32: return 32;
+        default: av_assert0(0);
+    }
+    return 0;
+}
+
+static int d3d12va_encode_hevc_write_access_unit(AVCodecContext *avctx,
+                                                 char *data, size_t *data_len,
+                                                 CodedBitstreamFragment *au)
+{
+    D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
+    int err;
+
+    err = ff_cbs_write_fragment_data(priv->cbc, au);
+    if (err < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
+        return err;
+    }
+
+    if (*data_len < 8 * au->data_size - au->data_bit_padding) {
+        av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
+               "%zu < %zu.\n", *data_len,
+               8 * au->data_size - au->data_bit_padding);
+        return AVERROR(ENOSPC);
+    }
+
+    memcpy(data, au->data, au->data_size);
+    *data_len = 8 * au->data_size - au->data_bit_padding;
+
+    return 0;
+}
+
+static int d3d12va_encode_hevc_add_nal(AVCodecContext *avctx,
+                                       CodedBitstreamFragment *au,
+                                       void *nal_unit)
+{
+    H265RawNALUnitHeader *header = nal_unit;
+    int err;
+
+    err = ff_cbs_insert_unit_content(au, -1,
+                                     header->nal_unit_type, nal_unit, NULL);
+    if (err < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
+               "type = %d.\n", header->nal_unit_type);
+        return err;
+    }
+
+    return 0;
+}
+
+static int d3d12va_encode_hevc_write_sequence_header(AVCodecContext *avctx,
+                                                     char *data, size_t *data_len)
+{
+    D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
+    CodedBitstreamFragment   *au   = &priv->current_access_unit;
+    int err;
+
+    err = d3d12va_encode_hevc_add_nal(avctx, au, &priv->raw_vps);
+    if (err < 0)
+        goto fail;
+
+    err = d3d12va_encode_hevc_add_nal(avctx, au, &priv->raw_sps);
+    if (err < 0)
+        goto fail;
+
+    err = d3d12va_encode_hevc_add_nal(avctx, au, &priv->raw_pps);
+    if (err < 0)
+        goto fail;
+
+    err = d3d12va_encode_hevc_write_access_unit(avctx, data, data_len, au);
+fail:
+    ff_cbs_fragment_reset(au);
+    return err;
+
+}
+
+static int d3d12va_encode_hevc_init_sequence_params(AVCodecContext *avctx)
+{
+    FFHWBaseEncodeContext *base_ctx = avctx->priv_data;
+    D3D12VAEncodeContext      *ctx  = avctx->priv_data;
+    D3D12VAEncodeHEVCContext  *priv = avctx->priv_data;
+    AVD3D12VAFramesContext   *hwctx = base_ctx->input_frames->hwctx;
+    H265RawVPS                *vps  = &priv->raw_vps;
+    H265RawSPS                *sps  = &priv->raw_sps;
+    H265RawPPS                *pps  = &priv->raw_pps;
+    H265RawProfileTierLevel   *ptl  = &vps->profile_tier_level;
+    H265RawVUI                *vui  = &sps->vui;
+    D3D12_VIDEO_ENCODER_PROFILE_HEVC profile = D3D12_VIDEO_ENCODER_PROFILE_HEVC_MAIN;
+    D3D12_VIDEO_ENCODER_LEVEL_TIER_CONSTRAINTS_HEVC level = { 0 };
+    const AVPixFmtDescriptor *desc;
+    uint8_t min_cu_size, max_cu_size, min_tu_size, max_tu_size;
+    int chroma_format, bit_depth;
+    HRESULT hr;
+    int i;
+
+    D3D12_FEATURE_DATA_VIDEO_ENCODER_SUPPORT support = {
+        .NodeIndex                        = 0,
+        .Codec                            = D3D12_VIDEO_ENCODER_CODEC_HEVC,
+        .InputFormat                      = hwctx->format,
+        .RateControl                      = ctx->rc,
+        .IntraRefresh                     = D3D12_VIDEO_ENCODER_INTRA_REFRESH_MODE_NONE,
+        .SubregionFrameEncoding           = D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_FULL_FRAME,
+        .ResolutionsListCount             = 1,
+        .pResolutionList                  = &ctx->resolution,
+        .CodecGopSequence                 = ctx->gop,
+        .MaxReferenceFramesInDPB          = MAX_DPB_SIZE - 1,
+        .CodecConfiguration               = ctx->codec_conf,
+        .SuggestedProfile.DataSize        = sizeof(D3D12_VIDEO_ENCODER_PROFILE_HEVC),
+        .SuggestedProfile.pHEVCProfile    = &profile,
+        .SuggestedLevel.DataSize          = sizeof(D3D12_VIDEO_ENCODER_LEVEL_TIER_CONSTRAINTS_HEVC),
+        .SuggestedLevel.pHEVCLevelSetting = &level,
+        .pResolutionDependentSupport      = &ctx->res_limits,
+     };
+
+    hr = ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_ENCODER_SUPPORT,
+                                                &support, sizeof(support));
+
+    if (FAILED(hr)) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to check encoder support(%lx).\n", (long)hr);
+        return AVERROR(EINVAL);
+    }
+
+    if (!(support.SupportFlags & D3D12_VIDEO_ENCODER_SUPPORT_FLAG_GENERAL_SUPPORT_OK)) {
+        av_log(avctx, AV_LOG_ERROR, "Driver does not support some request features. %#x\n",
+               support.ValidationFlags);
+        return AVERROR(EINVAL);
+    }
+
+    if (support.SupportFlags & D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RECONSTRUCTED_FRAMES_REQUIRE_TEXTURE_ARRAYS) {
+        av_log(avctx, AV_LOG_ERROR, "D3D12 video encode on this device requires texture array support, "
+               "but it's not implemented.\n");
+        return AVERROR_PATCHWELCOME;
+    }
+
+    memset(vps, 0, sizeof(*vps));
+    memset(sps, 0, sizeof(*sps));
+    memset(pps, 0, sizeof(*pps));
+
+    desc = av_pix_fmt_desc_get(base_ctx->input_frames->sw_format);
+    av_assert0(desc);
+    if (desc->nb_components == 1) {
+        chroma_format = 0;
+    } else {
+        if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 1) {
+            chroma_format = 1;
+        } else if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 0) {
+            chroma_format = 2;
+        } else if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
+            chroma_format = 3;
+        } else {
+            av_log(avctx, AV_LOG_ERROR, "Chroma format of input pixel format "
+                   "%s is not supported.\n", desc->name);
+            return AVERROR(EINVAL);
+        }
+    }
+    bit_depth = desc->comp[0].depth;
+
+    min_cu_size = d3d12va_encode_hevc_map_cusize(ctx->codec_conf.pHEVCConfig->MinLumaCodingUnitSize);
+    max_cu_size = d3d12va_encode_hevc_map_cusize(ctx->codec_conf.pHEVCConfig->MaxLumaCodingUnitSize);
+    min_tu_size = d3d12va_encode_hevc_map_tusize(ctx->codec_conf.pHEVCConfig->MinLumaTransformUnitSize);
+    max_tu_size = d3d12va_encode_hevc_map_tusize(ctx->codec_conf.pHEVCConfig->MaxLumaTransformUnitSize);
+
+    // VPS
+
+    vps->nal_unit_header = (H265RawNALUnitHeader) {
+        .nal_unit_type         = HEVC_NAL_VPS,
+        .nuh_layer_id          = 0,
+        .nuh_temporal_id_plus1 = 1,
+    };
+
+    vps->vps_video_parameter_set_id = 0;
+
+    vps->vps_base_layer_internal_flag  = 1;
+    vps->vps_base_layer_available_flag = 1;
+    vps->vps_max_layers_minus1         = 0;
+    vps->vps_max_sub_layers_minus1     = 0;
+    vps->vps_temporal_id_nesting_flag  = 1;
+
+    ptl->general_profile_space = 0;
+    ptl->general_profile_idc   = avctx->profile;
+    ptl->general_tier_flag     = priv->tier;
+
+    ptl->general_profile_compatibility_flag[ptl->general_profile_idc] = 1;
+
+    ptl->general_progressive_source_flag    = 1;
+    ptl->general_interlaced_source_flag     = 0;
+    ptl->general_non_packed_constraint_flag = 1;
+    ptl->general_frame_only_constraint_flag = 1;
+
+    ptl->general_max_14bit_constraint_flag = bit_depth <= 14;
+    ptl->general_max_12bit_constraint_flag = bit_depth <= 12;
+    ptl->general_max_10bit_constraint_flag = bit_depth <= 10;
+    ptl->general_max_8bit_constraint_flag  = bit_depth ==  8;
+
+    ptl->general_max_422chroma_constraint_flag  = chroma_format <= 2;
+    ptl->general_max_420chroma_constraint_flag  = chroma_format <= 1;
+    ptl->general_max_monochrome_constraint_flag = chroma_format == 0;
+
+    ptl->general_intra_constraint_flag = base_ctx->gop_size == 1;
+    ptl->general_one_picture_only_constraint_flag = 0;
+
+    ptl->general_lower_bit_rate_constraint_flag = 1;
+
+    if (avctx->level != FF_LEVEL_UNKNOWN) {
+        ptl->general_level_idc = avctx->level;
+    } else {
+        const H265LevelDescriptor *level;
+
+        level = ff_h265_guess_level(ptl, avctx->bit_rate,
+                                    base_ctx->surface_width, base_ctx->surface_height,
+                                    1, 1, 1, (base_ctx->b_per_p > 0) + 1);
+        if (level) {
+            av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
+            ptl->general_level_idc = level->level_idc;
+        } else {
+            av_log(avctx, AV_LOG_VERBOSE, "Stream will not conform to "
+                   "any normal level; using level 8.5.\n");
+            ptl->general_level_idc = 255;
+            // The tier flag must be set in level 8.5.
+            ptl->general_tier_flag = 1;
+        }
+        avctx->level = ptl->general_level_idc;
+    }
+
+    vps->vps_sub_layer_ordering_info_present_flag = 0;
+    vps->vps_max_dec_pic_buffering_minus1[0]      = base_ctx->max_b_depth + 1;
+    vps->vps_max_num_reorder_pics[0]              = base_ctx->max_b_depth;
+    vps->vps_max_latency_increase_plus1[0]        = 0;
+
+    vps->vps_max_layer_id             = 0;
+    vps->vps_num_layer_sets_minus1    = 0;
+    vps->layer_id_included_flag[0][0] = 1;
+
+    vps->vps_timing_info_present_flag = 1;
+    if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
+        vps->vps_num_units_in_tick  = avctx->framerate.den;
+        vps->vps_time_scale         = avctx->framerate.num;
+        vps->vps_poc_proportional_to_timing_flag = 1;
+        vps->vps_num_ticks_poc_diff_one_minus1   = 0;
+    } else {
+        vps->vps_num_units_in_tick  = avctx->time_base.num;
+        vps->vps_time_scale         = avctx->time_base.den;
+        vps->vps_poc_proportional_to_timing_flag = 0;
+    }
+    vps->vps_num_hrd_parameters = 0;
+
+    // SPS
+
+    sps->nal_unit_header = (H265RawNALUnitHeader) {
+        .nal_unit_type         = HEVC_NAL_SPS,
+        .nuh_layer_id          = 0,
+        .nuh_temporal_id_plus1 = 1,
+    };
+
+    sps->sps_video_parameter_set_id = vps->vps_video_parameter_set_id;
+
+    sps->sps_max_sub_layers_minus1    = vps->vps_max_sub_layers_minus1;
+    sps->sps_temporal_id_nesting_flag = vps->vps_temporal_id_nesting_flag;
+
+    sps->profile_tier_level = vps->profile_tier_level;
+
+    sps->sps_seq_parameter_set_id = 0;
+
+    sps->chroma_format_idc          = chroma_format;
+    sps->separate_colour_plane_flag = 0;
+
+    av_assert0(ctx->res_limits.SubregionBlockPixelsSize % min_cu_size == 0);
+
+    sps->pic_width_in_luma_samples  = FFALIGN(base_ctx->surface_width,
+                                              ctx->res_limits.SubregionBlockPixelsSize);
+    sps->pic_height_in_luma_samples = FFALIGN(base_ctx->surface_height,
+                                              ctx->res_limits.SubregionBlockPixelsSize);
+
+    if (avctx->width  != sps->pic_width_in_luma_samples ||
+        avctx->height != sps->pic_height_in_luma_samples) {
+        sps->conformance_window_flag = 1;
+        sps->conf_win_left_offset   = 0;
+        sps->conf_win_right_offset  =
+            (sps->pic_width_in_luma_samples - avctx->width) >> desc->log2_chroma_w;
+        sps->conf_win_top_offset    = 0;
+        sps->conf_win_bottom_offset =
+            (sps->pic_height_in_luma_samples - avctx->height) >> desc->log2_chroma_h;
+    } else {
+        sps->conformance_window_flag = 0;
+    }
+
+    sps->bit_depth_luma_minus8   = bit_depth - 8;
+    sps->bit_depth_chroma_minus8 = bit_depth - 8;
+
+    sps->log2_max_pic_order_cnt_lsb_minus4 = ctx->gop.pHEVCGroupOfPictures->log2_max_pic_order_cnt_lsb_minus4;
+
+    sps->sps_sub_layer_ordering_info_present_flag =
+        vps->vps_sub_layer_ordering_info_present_flag;
+    for (i = 0; i <= sps->sps_max_sub_layers_minus1; i++) {
+        sps->sps_max_dec_pic_buffering_minus1[i] =
+            vps->vps_max_dec_pic_buffering_minus1[i];
+        sps->sps_max_num_reorder_pics[i] =
+            vps->vps_max_num_reorder_pics[i];
+        sps->sps_max_latency_increase_plus1[i] =
+            vps->vps_max_latency_increase_plus1[i];
+    }
+
+    sps->log2_min_luma_coding_block_size_minus3      = (uint8_t)(av_log2(min_cu_size) - 3);
+    sps->log2_diff_max_min_luma_coding_block_size    = (uint8_t)(av_log2(max_cu_size) - av_log2(min_cu_size));
+    sps->log2_min_luma_transform_block_size_minus2   = (uint8_t)(av_log2(min_tu_size) - 2);
+    sps->log2_diff_max_min_luma_transform_block_size = (uint8_t)(av_log2(max_tu_size) - av_log2(min_tu_size));
+
+    sps->max_transform_hierarchy_depth_inter = ctx->codec_conf.pHEVCConfig->max_transform_hierarchy_depth_inter;
+    sps->max_transform_hierarchy_depth_intra = ctx->codec_conf.pHEVCConfig->max_transform_hierarchy_depth_intra;
+
+    sps->amp_enabled_flag = !!(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
+                               D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_USE_ASYMETRIC_MOTION_PARTITION);
+    sps->sample_adaptive_offset_enabled_flag = !!(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
+                                                  D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_SAO_FILTER);
+    sps->sps_temporal_mvp_enabled_flag = 0;
+    sps->pcm_enabled_flag = 0;
+
+    sps->vui_parameters_present_flag = 1;
+
+    if (avctx->sample_aspect_ratio.num != 0 &&
+        avctx->sample_aspect_ratio.den != 0) {
+        int num, den, i;
+        av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
+                  avctx->sample_aspect_ratio.den, 65535);
+        for (i = 0; i < FF_ARRAY_ELEMS(ff_h2645_pixel_aspect); i++) {
+            if (num == ff_h2645_pixel_aspect[i].num &&
+                den == ff_h2645_pixel_aspect[i].den) {
+                vui->aspect_ratio_idc = i;
+                break;
+            }
+        }
+        if (i >= FF_ARRAY_ELEMS(ff_h2645_pixel_aspect)) {
+            vui->aspect_ratio_idc = 255;
+            vui->sar_width  = num;
+            vui->sar_height = den;
+        }
+        vui->aspect_ratio_info_present_flag = 1;
+    }
+
+    // Unspecified video format, from table E-2.
+    vui->video_format             = 5;
+    vui->video_full_range_flag    =
+        avctx->color_range == AVCOL_RANGE_JPEG;
+    vui->colour_primaries         = avctx->color_primaries;
+    vui->transfer_characteristics = avctx->color_trc;
+    vui->matrix_coefficients      = avctx->colorspace;
+    if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
+        avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
+        avctx->colorspace      != AVCOL_SPC_UNSPECIFIED)
+        vui->colour_description_present_flag = 1;
+    if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
+        vui->colour_description_present_flag)
+        vui->video_signal_type_present_flag = 1;
+
+    if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
+        vui->chroma_loc_info_present_flag = 1;
+        vui->chroma_sample_loc_type_top_field    =
+        vui->chroma_sample_loc_type_bottom_field =
+            avctx->chroma_sample_location - 1;
+    }
+
+    vui->vui_timing_info_present_flag        = 1;
+    vui->vui_num_units_in_tick               = vps->vps_num_units_in_tick;
+    vui->vui_time_scale                      = vps->vps_time_scale;
+    vui->vui_poc_proportional_to_timing_flag = vps->vps_poc_proportional_to_timing_flag;
+    vui->vui_num_ticks_poc_diff_one_minus1   = vps->vps_num_ticks_poc_diff_one_minus1;
+    vui->vui_hrd_parameters_present_flag     = 0;
+
+    vui->bitstream_restriction_flag    = 1;
+    vui->motion_vectors_over_pic_boundaries_flag = 1;
+    vui->restricted_ref_pic_lists_flag = 1;
+    vui->max_bytes_per_pic_denom       = 0;
+    vui->max_bits_per_min_cu_denom     = 0;
+    vui->log2_max_mv_length_horizontal = 15;
+    vui->log2_max_mv_length_vertical   = 15;
+
+    // PPS
+
+    pps->nal_unit_header = (H265RawNALUnitHeader) {
+        .nal_unit_type         = HEVC_NAL_PPS,
+        .nuh_layer_id          = 0,
+        .nuh_temporal_id_plus1 = 1,
+    };
+
+    pps->pps_pic_parameter_set_id = 0;
+    pps->pps_seq_parameter_set_id = sps->sps_seq_parameter_set_id;
+
+    pps->cabac_init_present_flag = 1;
+
+    pps->num_ref_idx_l0_default_active_minus1 = 0;
+    pps->num_ref_idx_l1_default_active_minus1 = 0;
+
+    pps->init_qp_minus26 = 0;
+
+    pps->transform_skip_enabled_flag = !!(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
+                                          D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_TRANSFORM_SKIPPING);
+
+    // cu_qp_delta always required to be 1 in https://github.com/microsoft/DirectX-Specs/blob/master/d3d/D3D12VideoEncoding.md
+    pps->cu_qp_delta_enabled_flag = 1;
+
+    pps->diff_cu_qp_delta_depth   = 0;
+
+    pps->pps_slice_chroma_qp_offsets_present_flag = 1;
+
+    pps->tiles_enabled_flag = 0; // no tiling in D3D12
+
+    pps->pps_loop_filter_across_slices_enabled_flag = !(ctx->codec_conf.pHEVCConfig->ConfigurationFlags &
+                                                        D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_DISABLE_LOOP_FILTER_ACROSS_SLICES);
+    pps->deblocking_filter_control_present_flag = 1;
+
+    return 0;
+}
+
+static int d3d12va_encode_hevc_get_encoder_caps(AVCodecContext *avctx)
+{
+    int i;
+    HRESULT hr;
+    uint8_t min_cu_size, max_cu_size;
+    FFHWBaseEncodeContext *base_ctx = avctx->priv_data;
+    D3D12VAEncodeContext     *ctx = avctx->priv_data;
+    D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC *config;
+    D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC hevc_caps;
+
+    D3D12_FEATURE_DATA_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT codec_caps = {
+        .NodeIndex                   = 0,
+        .Codec                       = D3D12_VIDEO_ENCODER_CODEC_HEVC,
+        .Profile                     = ctx->profile->d3d12_profile,
+        .CodecSupportLimits.DataSize = sizeof(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC),
+    };
+
+    for (i = 0; i < FF_ARRAY_ELEMS(hevc_config_support_sets); i++) {
+        hevc_caps = hevc_config_support_sets[i];
+        codec_caps.CodecSupportLimits.pHEVCSupport = &hevc_caps;
+        hr = ID3D12VideoDevice3_CheckFeatureSupport(ctx->video_device3, D3D12_FEATURE_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT,
+                                                    &codec_caps, sizeof(codec_caps));
+        if (SUCCEEDED(hr) && codec_caps.IsSupported)
+            break;
+    }
+
+    if (i == FF_ARRAY_ELEMS(hevc_config_support_sets)) {
+        av_log(avctx, AV_LOG_ERROR, "Unsupported codec configuration\n");
+        return AVERROR(EINVAL);
+    }
+
+    ctx->codec_conf.DataSize = sizeof(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC);
+    ctx->codec_conf.pHEVCConfig = av_mallocz(ctx->codec_conf.DataSize);
+    if (!ctx->codec_conf.pHEVCConfig)
+        return AVERROR(ENOMEM);
+
+    config = ctx->codec_conf.pHEVCConfig;
+
+    config->ConfigurationFlags                  = D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_NONE;
+    config->MinLumaCodingUnitSize               = hevc_caps.MinLumaCodingUnitSize;
+    config->MaxLumaCodingUnitSize               = hevc_caps.MaxLumaCodingUnitSize;
+    config->MinLumaTransformUnitSize            = hevc_caps.MinLumaTransformUnitSize;
+    config->MaxLumaTransformUnitSize            = hevc_caps.MaxLumaTransformUnitSize;
+    config->max_transform_hierarchy_depth_inter = hevc_caps.max_transform_hierarchy_depth_inter;
+    config->max_transform_hierarchy_depth_intra = hevc_caps.max_transform_hierarchy_depth_intra;
+
+    if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_ASYMETRIC_MOTION_PARTITION_SUPPORT ||
+        hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_ASYMETRIC_MOTION_PARTITION_REQUIRED)
+        config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_USE_ASYMETRIC_MOTION_PARTITION;
+
+    if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_SAO_FILTER_SUPPORT)
+        config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_SAO_FILTER;
+
+    if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_DISABLING_LOOP_FILTER_ACROSS_SLICES_SUPPORT)
+        config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_DISABLE_LOOP_FILTER_ACROSS_SLICES;
+
+    if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_TRANSFORM_SKIP_SUPPORT)
+        config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_HEVC_FLAG_ENABLE_TRANSFORM_SKIPPING;
+
+    if (hevc_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_HEVC_FLAG_P_FRAMES_IMPLEMENTED_AS_LOW_DELAY_B_FRAMES)
+        ctx->bi_not_empty = 1;
+
+    // block sizes
+    min_cu_size = d3d12va_encode_hevc_map_cusize(hevc_caps.MinLumaCodingUnitSize);
+    max_cu_size = d3d12va_encode_hevc_map_cusize(hevc_caps.MaxLumaCodingUnitSize);
+
+    av_log(avctx, AV_LOG_VERBOSE, "Using CTU size %dx%d, "
+           "min CB size %dx%d.\n", max_cu_size, max_cu_size,
+           min_cu_size, min_cu_size);
+
+    base_ctx->surface_width  = FFALIGN(avctx->width,  min_cu_size);
+    base_ctx->surface_height = FFALIGN(avctx->height, min_cu_size);
+
+    return 0;
+}
+
+static int d3d12va_encode_hevc_configure(AVCodecContext *avctx)
+{
+    FFHWBaseEncodeContext  *base_ctx = avctx->priv_data;
+    D3D12VAEncodeContext      *ctx = avctx->priv_data;
+    D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
+    int fixed_qp_idr, fixed_qp_p, fixed_qp_b;
+    int err;
+
+    err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);
+    if (err < 0)
+        return err;
+
+    // Rate control
+    if (ctx->rc.Mode == D3D12_VIDEO_ENCODER_RATE_CONTROL_MODE_CQP) {
+        D3D12_VIDEO_ENCODER_RATE_CONTROL_CQP *cqp_ctl;
+        fixed_qp_p = av_clip(ctx->rc_quality, 1, 51);
+        if (avctx->i_quant_factor > 0.0)
+            fixed_qp_idr = av_clip((avctx->i_quant_factor * fixed_qp_p +
+                                    avctx->i_quant_offset) + 0.5, 1, 51);
+        else
+            fixed_qp_idr = fixed_qp_p;
+        if (avctx->b_quant_factor > 0.0)
+            fixed_qp_b = av_clip((avctx->b_quant_factor * fixed_qp_p +
+                                  avctx->b_quant_offset) + 0.5, 1, 51);
+        else
+            fixed_qp_b = fixed_qp_p;
+
+        av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
+               "%d / %d / %d for IDR- / P- / B-frames.\n",
+               fixed_qp_idr, fixed_qp_p, fixed_qp_b);
+
+        ctx->rc.ConfigParams.DataSize = sizeof(D3D12_VIDEO_ENCODER_RATE_CONTROL_CQP);
+        cqp_ctl = av_mallocz(ctx->rc.ConfigParams.DataSize);
+        if (!cqp_ctl)
+            return AVERROR(ENOMEM);
+
+        cqp_ctl->ConstantQP_FullIntracodedFrame                  = fixed_qp_idr;
+        cqp_ctl->ConstantQP_InterPredictedFrame_PrevRefOnly      = fixed_qp_p;
+        cqp_ctl->ConstantQP_InterPredictedFrame_BiDirectionalRef = fixed_qp_b;
+
+        ctx->rc.ConfigParams.pConfiguration_CQP = cqp_ctl;
+    }
+
+    // GOP
+    ctx->gop.DataSize = sizeof(D3D12_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_HEVC);
+    ctx->gop.pHEVCGroupOfPictures = av_mallocz(ctx->gop.DataSize);
+    if (!ctx->gop.pHEVCGroupOfPictures)
+        return AVERROR(ENOMEM);
+
+    ctx->gop.pHEVCGroupOfPictures->GOPLength      = base_ctx->gop_size;
+    ctx->gop.pHEVCGroupOfPictures->PPicturePeriod = base_ctx->b_per_p + 1;
+    // Power of 2
+    if (base_ctx->gop_size & base_ctx->gop_size - 1 == 0)
+        ctx->gop.pHEVCGroupOfPictures->log2_max_pic_order_cnt_lsb_minus4 =
+            FFMAX(av_log2(base_ctx->gop_size) - 4, 0);
+    else
+        ctx->gop.pHEVCGroupOfPictures->log2_max_pic_order_cnt_lsb_minus4 =
+            FFMAX(av_log2(base_ctx->gop_size) - 3, 0);
+
+    return 0;
+}
+
+static int d3d12va_encode_hevc_set_level(AVCodecContext *avctx)
+{
+    D3D12VAEncodeContext      *ctx = avctx->priv_data;
+    D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
+    int i;
+
+    ctx->level.DataSize = sizeof(D3D12_VIDEO_ENCODER_LEVEL_TIER_CONSTRAINTS_HEVC);
+    ctx->level.pHEVCLevelSetting = av_mallocz(ctx->level.DataSize);
+    if (!ctx->level.pHEVCLevelSetting)
+        return AVERROR(ENOMEM);
+
+    for (i = 0; i < FF_ARRAY_ELEMS(hevc_levels); i++) {
+        if (avctx->level == hevc_levels[i].level) {
+            ctx->level.pHEVCLevelSetting->Level = hevc_levels[i].d3d12_level;
+            break;
+        }
+    }
+
+    if (i == FF_ARRAY_ELEMS(hevc_levels)) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid level %d.\n", avctx->level);
+        return AVERROR(EINVAL);
+    }
+
+    ctx->level.pHEVCLevelSetting->Tier = priv->raw_vps.profile_tier_level.general_tier_flag == 0 ?
+                                         D3D12_VIDEO_ENCODER_TIER_HEVC_MAIN :
+                                         D3D12_VIDEO_ENCODER_TIER_HEVC_HIGH;
+
+    return 0;
+}
+
+static void d3d12va_encode_hevc_free_picture_params(D3D12VAEncodePicture *pic)
+{
+    if (!pic->pic_ctl.pHEVCPicData)
+        return;
+
+    av_freep(&pic->pic_ctl.pHEVCPicData->pList0ReferenceFrames);
+    av_freep(&pic->pic_ctl.pHEVCPicData->pList1ReferenceFrames);
+    av_freep(&pic->pic_ctl.pHEVCPicData->pReferenceFramesReconPictureDescriptors);
+    av_freep(&pic->pic_ctl.pHEVCPicData);
+}
+
+static int d3d12va_encode_hevc_init_picture_params(AVCodecContext *avctx,
+                                                   D3D12VAEncodePicture *pic)
+{
+    FFHWBaseEncodePicture                           *base_pic = &pic->base;
+    D3D12VAEncodeHEVCPicture                            *hpic = base_pic->priv_data;
+    FFHWBaseEncodePicture                               *prev = base_pic->prev;
+    D3D12VAEncodeHEVCPicture                           *hprev = prev ? prev->priv_data : NULL;
+    D3D12_VIDEO_ENCODER_REFERENCE_PICTURE_DESCRIPTOR_HEVC *pd = NULL;
+    UINT                                           *ref_list0 = NULL, *ref_list1 = NULL;
+    int i, idx = 0;
+
+    pic->pic_ctl.DataSize = sizeof(D3D12_VIDEO_ENCODER_PICTURE_CONTROL_CODEC_DATA_HEVC);
+    pic->pic_ctl.pHEVCPicData = av_mallocz(pic->pic_ctl.DataSize);
+    if (!pic->pic_ctl.pHEVCPicData)
+        return AVERROR(ENOMEM);
+
+    if (base_pic->type == FF_HW_PICTURE_TYPE_IDR) {
+        av_assert0(base_pic->display_order == base_pic->encode_order);
+        hpic->last_idr_frame = base_pic->display_order;
+    } else {
+        av_assert0(prev);
+        hpic->last_idr_frame = hprev->last_idr_frame;
+    }
+    hpic->pic_order_cnt = base_pic->display_order - hpic->last_idr_frame;
+
+    switch(base_pic->type) {
+        case FF_HW_PICTURE_TYPE_IDR:
+            pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_IDR_FRAME;
+            break;
+        case FF_HW_PICTURE_TYPE_I:
+            pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_I_FRAME;
+            break;
+        case FF_HW_PICTURE_TYPE_P:
+            pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_P_FRAME;
+            break;
+        case FF_HW_PICTURE_TYPE_B:
+            pic->pic_ctl.pHEVCPicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_HEVC_B_FRAME;
+            break;
+        default:
+            av_assert0(0 && "invalid picture type");
+    }
+
+    pic->pic_ctl.pHEVCPicData->slice_pic_parameter_set_id = 0;
+    pic->pic_ctl.pHEVCPicData->PictureOrderCountNumber    = hpic->pic_order_cnt;
+
+    if (base_pic->type == FF_HW_PICTURE_TYPE_P || base_pic->type == FF_HW_PICTURE_TYPE_B) {
+        pd = av_calloc(MAX_PICTURE_REFERENCES, sizeof(*pd));
+        if (!pd)
+            return AVERROR(ENOMEM);
+
+        ref_list0 = av_calloc(MAX_PICTURE_REFERENCES, sizeof(*ref_list0));
+        if (!ref_list0)
+            return AVERROR(ENOMEM);
+
+        pic->pic_ctl.pHEVCPicData->List0ReferenceFramesCount = base_pic->nb_refs[0];
+        for (i = 0; i < base_pic->nb_refs[0]; i++) {
+            FFHWBaseEncodePicture *ref = base_pic->refs[0][i];
+            D3D12VAEncodeHEVCPicture *href;
+
+            av_assert0(ref && ref->encode_order < base_pic->encode_order);
+            href = ref->priv_data;
+
+            ref_list0[i] = idx;
+            pd[idx].ReconstructedPictureResourceIndex = idx;
+            pd[idx].IsRefUsedByCurrentPic = TRUE;
+            pd[idx].PictureOrderCountNumber = href->pic_order_cnt;
+            idx++;
+        }
+    }
+
+    if (base_pic->type == FF_HW_PICTURE_TYPE_B) {
+        ref_list1 = av_calloc(MAX_PICTURE_REFERENCES, sizeof(*ref_list1));
+        if (!ref_list1)
+            return AVERROR(ENOMEM);
+
+        pic->pic_ctl.pHEVCPicData->List1ReferenceFramesCount = base_pic->nb_refs[1];
+        for (i = 0; i < base_pic->nb_refs[1]; i++) {
+            FFHWBaseEncodePicture *ref = base_pic->refs[1][i];
+            D3D12VAEncodeHEVCPicture *href;
+
+            av_assert0(ref && ref->encode_order < base_pic->encode_order);
+            href = ref->priv_data;
+
+            ref_list1[i] = idx;
+            pd[idx].ReconstructedPictureResourceIndex = idx;
+            pd[idx].IsRefUsedByCurrentPic = TRUE;
+            pd[idx].PictureOrderCountNumber = href->pic_order_cnt;
+            idx++;
+        }
+    }
+
+    pic->pic_ctl.pHEVCPicData->pList0ReferenceFrames = ref_list0;
+    pic->pic_ctl.pHEVCPicData->pList1ReferenceFrames = ref_list1;
+    pic->pic_ctl.pHEVCPicData->ReferenceFramesReconPictureDescriptorsCount = idx;
+    pic->pic_ctl.pHEVCPicData->pReferenceFramesReconPictureDescriptors = pd;
+
+    return 0;
+}
+
+static const D3D12VAEncodeType d3d12va_encode_type_hevc = {
+    .profiles               = d3d12va_encode_hevc_profiles,
+
+    .d3d12_codec            = D3D12_VIDEO_ENCODER_CODEC_HEVC,
+
+    .flags                  = FF_HW_FLAG_B_PICTURES |
+                              FF_HW_FLAG_B_PICTURE_REFERENCES |
+                              FF_HW_FLAG_NON_IDR_KEY_PICTURES,
+
+    .default_quality        = 25,
+
+    .get_encoder_caps       = &d3d12va_encode_hevc_get_encoder_caps,
+
+    .configure              = &d3d12va_encode_hevc_configure,
+
+    .set_level              = &d3d12va_encode_hevc_set_level,
+
+    .picture_priv_data_size = sizeof(D3D12VAEncodeHEVCPicture),
+
+    .init_sequence_params   = &d3d12va_encode_hevc_init_sequence_params,
+
+    .init_picture_params    = &d3d12va_encode_hevc_init_picture_params,
+
+    .free_picture_params    = &d3d12va_encode_hevc_free_picture_params,
+
+    .write_sequence_header  = &d3d12va_encode_hevc_write_sequence_header,
+};
+
+static int d3d12va_encode_hevc_init(AVCodecContext *avctx)
+{
+    D3D12VAEncodeContext      *ctx = avctx->priv_data;
+    D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
+
+    ctx->codec = &d3d12va_encode_type_hevc;
+
+    if (avctx->profile == AV_PROFILE_UNKNOWN)
+        avctx->profile = priv->profile;
+    if (avctx->level == FF_LEVEL_UNKNOWN)
+        avctx->level = priv->level;
+
+    if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "
+               "in 8-bit unsigned integer.\n", avctx->level);
+        return AVERROR(EINVAL);
+    }
+
+    if (priv->qp > 0)
+        ctx->explicit_qp = priv->qp;
+
+    return ff_d3d12va_encode_init(avctx);
+}
+
+static int d3d12va_encode_hevc_close(AVCodecContext *avctx)
+{
+    D3D12VAEncodeHEVCContext *priv = avctx->priv_data;
+
+    ff_cbs_fragment_free(&priv->current_access_unit);
+    ff_cbs_close(&priv->cbc);
+
+    av_freep(&priv->common.codec_conf.pHEVCConfig);
+    av_freep(&priv->common.gop.pHEVCGroupOfPictures);
+    av_freep(&priv->common.level.pHEVCLevelSetting);
+
+    return ff_d3d12va_encode_close(avctx);
+}
+
+#define OFFSET(x) offsetof(D3D12VAEncodeHEVCContext, x)
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
+static const AVOption d3d12va_encode_hevc_options[] = {
+    HW_BASE_ENCODE_COMMON_OPTIONS,
+    D3D12VA_ENCODE_RC_OPTIONS,
+
+    { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
+      OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, FLAGS },
+
+    { "profile", "Set profile (general_profile_idc)",
+      OFFSET(profile), AV_OPT_TYPE_INT,
+      { .i64 = AV_PROFILE_UNKNOWN }, AV_PROFILE_UNKNOWN, 0xff, FLAGS, "profile" },
+
+#define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
+      { .i64 = value }, 0, 0, FLAGS, "profile"
+    { PROFILE("main",               AV_PROFILE_HEVC_MAIN) },
+    { PROFILE("main10",             AV_PROFILE_HEVC_MAIN_10) },
+#undef PROFILE
+
+    { "tier", "Set tier (general_tier_flag)",
+      OFFSET(tier), AV_OPT_TYPE_INT,
+      { .i64 = 0 }, 0, 1, FLAGS, "tier" },
+    { "main", NULL, 0, AV_OPT_TYPE_CONST,
+      { .i64 = 0 }, 0, 0, FLAGS, "tier" },
+    { "high", NULL, 0, AV_OPT_TYPE_CONST,
+      { .i64 = 1 }, 0, 0, FLAGS, "tier" },
+
+    { "level", "Set level (general_level_idc)",
+      OFFSET(level), AV_OPT_TYPE_INT,
+      { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },
+
+#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
+      { .i64 = value }, 0, 0, FLAGS, "level"
+    { LEVEL("1",    30) },
+    { LEVEL("2",    60) },
+    { LEVEL("2.1",  63) },
+    { LEVEL("3",    90) },
+    { LEVEL("3.1",  93) },
+    { LEVEL("4",   120) },
+    { LEVEL("4.1", 123) },
+    { LEVEL("5",   150) },
+    { LEVEL("5.1", 153) },
+    { LEVEL("5.2", 156) },
+    { LEVEL("6",   180) },
+    { LEVEL("6.1", 183) },
+    { LEVEL("6.2", 186) },
+#undef LEVEL
+
+    { NULL },
+};
+
+static const FFCodecDefault d3d12va_encode_hevc_defaults[] = {
+    { "b",              "0"   },
+    { "bf",             "2"   },
+    { "g",              "120" },
+    { "i_qfactor",      "1"   },
+    { "i_qoffset",      "0"   },
+    { "b_qfactor",      "1"   },
+    { "b_qoffset",      "0"   },
+    { "qmin",           "-1"  },
+    { "qmax",           "-1"  },
+    { NULL },
+};
+
+static const AVClass d3d12va_encode_hevc_class = {
+    .class_name = "hevc_d3d12va",
+    .item_name  = av_default_item_name,
+    .option     = d3d12va_encode_hevc_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+const FFCodec ff_hevc_d3d12va_encoder = {
+    .p.name         = "hevc_d3d12va",
+    CODEC_LONG_NAME("D3D12VA hevc encoder"),
+    .p.type         = AVMEDIA_TYPE_VIDEO,
+    .p.id           = AV_CODEC_ID_HEVC,
+    .priv_data_size = sizeof(D3D12VAEncodeHEVCContext),
+    .init           = &d3d12va_encode_hevc_init,
+    FF_CODEC_RECEIVE_PACKET_CB(&ff_hw_base_encode_receive_packet),
+    .close          = &d3d12va_encode_hevc_close,
+    .p.priv_class   = &d3d12va_encode_hevc_class,
+    .p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
+                      AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
+    .caps_internal  = FF_CODEC_CAP_NOT_INIT_THREADSAFE |
+                      FF_CODEC_CAP_INIT_CLEANUP,
+    .defaults       = d3d12va_encode_hevc_defaults,
+    .p.pix_fmts = (const enum AVPixelFormat[]) {
+        AV_PIX_FMT_D3D12,
+        AV_PIX_FMT_NONE,
+    },
+    .hw_configs     = ff_d3d12va_encode_hw_configs,
+    .p.wrapper_name = "d3d12va",
+};