avcodec/d3d12va_encode: D3D12 H264 encoding support

This patch introduces hardware-accelerated H.264 encoding
using Direct3D 12 Video API (D3D12VA).

Changelog

@@ -7,6 +7,7 @@ version <next>:
 - gfxcapture: Windows.Graphics.Capture based window/monitor capture
 - hxvs demuxer for HXVS/HXVT IP camera format
 - MPEG-H 3D Audio decoding via mpeghdec
+- D3D12 H.264 encoder
 
 
 version 8.0:

configure

@@ -3464,6 +3464,7 @@ h264_amf_encoder_deps="amf"
 h264_amf_decoder_deps="amf"
 h264_cuvid_decoder_deps="cuvid"
 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
+h264_d3d12va_encoder_select="cbs_h264 d3d12va_encode"
 h264_mediacodec_decoder_deps="mediacodec"
 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
 h264_mediacodec_encoder_deps="mediacodec"

libavcodec/Makefile

@@ -432,6 +432,8 @@ OBJS-$(CONFIG_H264_DECODER)            += h264dec.o h264_cabac.o h264_cavlc.o \
 OBJS-$(CONFIG_H264_AMF_ENCODER)        += amfenc_h264.o
 OBJS-$(CONFIG_H264_AMF_DECODER)        += amfdec.o
 OBJS-$(CONFIG_H264_CUVID_DECODER)      += cuviddec.o
+OBJS-$(CONFIG_H264_D3D12VA_ENCODER)    += d3d12va_encode_h264.o h264_levels.o \
+                                          h2645data.o hw_base_encode_h264.o
 OBJS-$(CONFIG_H264_MEDIACODEC_DECODER) += mediacodecdec.o
 OBJS-$(CONFIG_H264_MEDIACODEC_ENCODER) += mediacodecenc.o
 OBJS-$(CONFIG_H264_MF_ENCODER)         += mfenc.o mf_utils.o

libavcodec/allcodecs.c

@@ -870,6 +870,7 @@ extern const FFCodec ff_libopenh264_decoder;
 extern const FFCodec ff_h264_amf_encoder;
 extern const FFCodec ff_h264_amf_decoder;
 extern const FFCodec ff_h264_cuvid_decoder;
+extern const FFCodec ff_h264_d3d12va_encoder;
 extern const FFCodec ff_h264_mf_encoder;
 extern const FFCodec ff_h264_nvenc_encoder;
 extern const FFCodec ff_h264_oh_decoder;

libavcodec/d3d12va_encode_h264.c

@@ -0,0 +1,633 @@
+/*
+ * Direct3D 12 HW acceleration video encoder
+ *
+ * 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_h264.h"
+#include "hw_base_encode_h264.h"
+#include "h2645data.h"
+#include "h264_levels.h"
+#include "codec_internal.h"
+#include "d3d12va_encode.h"
+
+typedef struct D3D12VAEncodeH264Picture {
+    int pic_order_cnt;
+    int64_t last_idr_frame;
+} D3D12VAEncodeH264Picture;
+
+typedef struct D3D12VAEncodeH264Context {
+    D3D12VAEncodeContext common;
+
+    // User options.
+    int qp;
+    int profile;
+    int level;
+    int idr_pic_id;
+
+    // Writer structures.
+    FFHWBaseEncodeH264 units;
+    FFHWBaseEncodeH264Opts unit_opts;
+
+    CodedBitstreamContext *cbc;
+    CodedBitstreamFragment current_access_unit;
+} D3D12VAEncodeH264Context;
+
+typedef struct D3D12VAEncodeH264Level {
+    int level;
+    D3D12_VIDEO_ENCODER_LEVELS_H264 d3d12_level;
+} D3D12VAEncodeH264Level;
+
+static const D3D12VAEncodeH264Level h264_levels[] = {
+    { 10, D3D12_VIDEO_ENCODER_LEVELS_H264_1    },
+    { 11, D3D12_VIDEO_ENCODER_LEVELS_H264_11   },
+    { 12, D3D12_VIDEO_ENCODER_LEVELS_H264_12   },
+    { 13, D3D12_VIDEO_ENCODER_LEVELS_H264_13   },
+    { 20, D3D12_VIDEO_ENCODER_LEVELS_H264_2    },
+    { 21, D3D12_VIDEO_ENCODER_LEVELS_H264_21   },
+    { 22, D3D12_VIDEO_ENCODER_LEVELS_H264_22   },
+    { 30, D3D12_VIDEO_ENCODER_LEVELS_H264_3    },
+    { 31, D3D12_VIDEO_ENCODER_LEVELS_H264_31   },
+    { 32, D3D12_VIDEO_ENCODER_LEVELS_H264_32   },
+    { 40, D3D12_VIDEO_ENCODER_LEVELS_H264_4    },
+    { 41, D3D12_VIDEO_ENCODER_LEVELS_H264_41   },
+    { 42, D3D12_VIDEO_ENCODER_LEVELS_H264_42   },
+    { 50, D3D12_VIDEO_ENCODER_LEVELS_H264_5    },
+    { 51, D3D12_VIDEO_ENCODER_LEVELS_H264_51   },
+    { 52, D3D12_VIDEO_ENCODER_LEVELS_H264_52   },
+    { 60, D3D12_VIDEO_ENCODER_LEVELS_H264_6    },
+    { 61, D3D12_VIDEO_ENCODER_LEVELS_H264_61   },
+    { 62, D3D12_VIDEO_ENCODER_LEVELS_H264_62   },
+};
+
+static const D3D12_VIDEO_ENCODER_PROFILE_H264 profile_main      = D3D12_VIDEO_ENCODER_PROFILE_H264_MAIN;
+static const D3D12_VIDEO_ENCODER_PROFILE_H264 profile_high      = D3D12_VIDEO_ENCODER_PROFILE_H264_HIGH;
+static const D3D12_VIDEO_ENCODER_PROFILE_H264 profile_high_10   = D3D12_VIDEO_ENCODER_PROFILE_H264_HIGH_10;
+
+#define D3D_PROFILE_DESC(name) \
+    { sizeof(D3D12_VIDEO_ENCODER_PROFILE_H264), { .pH264Profile = (D3D12_VIDEO_ENCODER_PROFILE_H264 *)&profile_ ## name } }
+static const D3D12VAEncodeProfile d3d12va_encode_h264_profiles[] = {
+    { AV_PROFILE_H264_MAIN,         8, 3, 1, 1, D3D_PROFILE_DESC(main)      },
+    { AV_PROFILE_H264_HIGH,         8, 3, 1, 1, D3D_PROFILE_DESC(high)      },
+    { AV_PROFILE_H264_HIGH_10,     10, 3, 1, 1, D3D_PROFILE_DESC(high_10)   },
+    { AV_PROFILE_UNKNOWN },
+};
+
+static int d3d12va_encode_h264_write_access_unit(AVCodecContext *avctx,
+                                                 char *data, size_t *data_len,
+                                                 CodedBitstreamFragment *au)
+{
+    D3D12VAEncodeH264Context *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_h264_add_nal(AVCodecContext *avctx,
+                                       CodedBitstreamFragment *au,
+                                       void *nal_unit)
+{
+    H264RawNALUnitHeader *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_h264_write_sequence_header(AVCodecContext *avctx,
+                                                     char *data, size_t *data_len)
+{
+    D3D12VAEncodeH264Context *priv = avctx->priv_data;
+    CodedBitstreamFragment   *au   = &priv->current_access_unit;
+    int err;
+
+    err = d3d12va_encode_h264_add_nal(avctx, au, &priv->units.raw_sps);
+    if (err < 0)
+        goto fail;
+
+    err = d3d12va_encode_h264_add_nal(avctx, au, &priv->units.raw_pps);
+    if (err < 0)
+        goto fail;
+
+    err = d3d12va_encode_h264_write_access_unit(avctx, data, data_len, au);
+fail:
+    ff_cbs_fragment_reset(au);
+    return err;
+}
+
+static int d3d12va_encode_h264_init_sequence_params(AVCodecContext *avctx)
+{
+    FFHWBaseEncodeContext     *base_ctx = avctx->priv_data;
+    D3D12VAEncodeContext      *ctx  = avctx->priv_data;
+    D3D12VAEncodeH264Context  *priv = avctx->priv_data;
+    AVD3D12VAFramesContext    *hwctx = base_ctx->input_frames->hwctx;
+    H264RawSPS                *sps  = &priv->units.raw_sps;
+    H264RawPPS                *pps  = &priv->units.raw_pps;
+    H264RawVUI                *vui  = &sps->vui;
+    D3D12_VIDEO_ENCODER_PROFILE_H264 profile = D3D12_VIDEO_ENCODER_PROFILE_H264_MAIN;
+    D3D12_VIDEO_ENCODER_LEVELS_H264 level = { 0 };
+    const AVPixFmtDescriptor *desc;
+    HRESULT hr;
+    int err;
+
+    D3D12_FEATURE_DATA_VIDEO_ENCODER_SUPPORT support = {
+        .NodeIndex                        = 0,
+        .Codec                            = D3D12_VIDEO_ENCODER_CODEC_H264,
+        .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_H264),
+        .SuggestedProfile.pH264Profile    = &profile,
+        .SuggestedLevel.DataSize          = sizeof(D3D12_VIDEO_ENCODER_LEVELS_H264),
+        .SuggestedLevel.pH264LevelSetting = &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) {
+        ctx->is_texture_array = 1;
+        av_log(avctx, AV_LOG_DEBUG, "D3D12 video encode on this device uses texture array mode.\n");
+    }
+
+    desc = av_pix_fmt_desc_get(base_ctx->input_frames->sw_format);
+    av_assert0(desc);
+
+    sps->pic_width_in_mbs_minus1  = ((base_ctx->surface_width + 0x0F) >> 4) - 1;
+    sps->pic_height_in_map_units_minus1 = ((base_ctx->surface_height + 0x0F) >> 4) - 1;
+
+    priv->unit_opts.mb_width  = sps->pic_width_in_mbs_minus1 + 1;
+    priv->unit_opts.mb_height = sps->pic_height_in_map_units_minus1 +1;
+
+    err = ff_hw_base_encode_init_params_h264(base_ctx, avctx,
+                                             &priv->units, &priv->unit_opts);
+    if (err < 0)
+        return err;
+
+    avctx->level = priv->units.raw_sps.level_idc;
+
+    ctx->gop.pH264GroupOfPictures->pic_order_cnt_type = sps->pic_order_cnt_type;
+
+    // override the default value according to the gop size
+    sps->log2_max_frame_num_minus4 = FFMAX(av_ceil_log2(base_ctx->gop_size) - 4, 0);
+    ctx->gop.pH264GroupOfPictures->log2_max_frame_num_minus4 = sps->log2_max_frame_num_minus4;
+    pps->deblocking_filter_control_present_flag = 1;
+
+    return 0;
+}
+
+static int d3d12va_encode_h264_get_encoder_caps(AVCodecContext *avctx)
+{
+    HRESULT hr;
+    FFHWBaseEncodeContext       *base_ctx = avctx->priv_data;
+    D3D12VAEncodeContext        *ctx = avctx->priv_data;
+    D3D12VAEncodeH264Context    *priv = avctx->priv_data;
+
+    D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_H264 *config;
+    D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_H264 h264_caps;
+
+    D3D12_FEATURE_DATA_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT codec_caps = {
+        .NodeIndex                   = 0,
+        .Codec                       = D3D12_VIDEO_ENCODER_CODEC_H264,
+        .Profile                     = ctx->profile->d3d12_profile,
+        .CodecSupportLimits.DataSize = sizeof(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_H264),
+    };
+
+    codec_caps.CodecSupportLimits.pH264Support = &h264_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))
+        return AVERROR(EINVAL);
+
+    ctx->codec_conf.DataSize = sizeof(D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_H264);
+    ctx->codec_conf.pH264Config = av_mallocz(ctx->codec_conf.DataSize);
+    if (!ctx->codec_conf.pH264Config)
+        return AVERROR(ENOMEM);
+
+    config = ctx->codec_conf.pH264Config;
+
+    config->ConfigurationFlags = D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_H264_FLAG_NONE;
+
+    if (h264_caps.SupportFlags & D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_SUPPORT_H264_FLAG_CABAC_ENCODING_SUPPORT) {
+        config->ConfigurationFlags |= D3D12_VIDEO_ENCODER_CODEC_CONFIGURATION_H264_FLAG_ENABLE_CABAC_ENCODING;
+        priv->unit_opts.cabac = 1;
+    }
+
+    base_ctx->surface_width  = FFALIGN(avctx->width,  16);
+    base_ctx->surface_height = FFALIGN(avctx->height, 16);
+
+    return 0;
+}
+
+static int d3d12va_encode_h264_configure(AVCodecContext *avctx)
+{
+    FFHWBaseEncodeContext       *base_ctx = avctx->priv_data;
+    D3D12VAEncodeContext        *ctx = avctx->priv_data;
+    D3D12VAEncodeH264Context    *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_H264, 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;
+    }
+    priv->unit_opts.fixed_qp_idr = 26;
+
+    // GOP
+    ctx->gop.DataSize = sizeof(D3D12_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_H264);
+    ctx->gop.pH264GroupOfPictures = av_mallocz(ctx->gop.DataSize);
+    if (!ctx->gop.pH264GroupOfPictures)
+        return AVERROR(ENOMEM);
+
+    ctx->gop.pH264GroupOfPictures->GOPLength      = base_ctx->gop_size;
+    ctx->gop.pH264GroupOfPictures->PPicturePeriod = base_ctx->b_per_p + 1;
+    ctx->gop.pH264GroupOfPictures->log2_max_frame_num_minus4 = FFMAX(av_ceil_log2(base_ctx->gop_size) - 4, 0);
+
+    return 0;
+}
+
+static int d3d12va_encode_h264_set_level(AVCodecContext *avctx)
+{
+    D3D12VAEncodeContext        *ctx = avctx->priv_data;
+    D3D12VAEncodeH264Context    *priv = avctx->priv_data;
+    int i;
+
+    ctx->level.DataSize = sizeof(D3D12_VIDEO_ENCODER_LEVELS_H264);
+    ctx->level.pH264LevelSetting = av_mallocz(ctx->level.DataSize);
+    if (!ctx->level.pH264LevelSetting)
+        return AVERROR(ENOMEM);
+
+    for (i = 0; i < FF_ARRAY_ELEMS(h264_levels); i++) {
+        if (avctx->level == h264_levels[i].level) {
+            *ctx->level.pH264LevelSetting = h264_levels[i].d3d12_level;
+            break;
+        }
+    }
+
+    if (i == FF_ARRAY_ELEMS(h264_levels)) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid level %d.\n", avctx->level);
+        return AVERROR(EINVAL);
+    }
+
+    return 0;
+}
+
+static void d3d12va_encode_h264_free_picture_params(D3D12VAEncodePicture *pic)
+{
+    if (!pic->pic_ctl.pH264PicData)
+        return;
+
+    av_freep(&pic->pic_ctl.pH264PicData->pList0ReferenceFrames);
+    av_freep(&pic->pic_ctl.pH264PicData->pList1ReferenceFrames);
+    av_freep(&pic->pic_ctl.pH264PicData->pReferenceFramesReconPictureDescriptors);
+    av_freep(&pic->pic_ctl.pH264PicData);
+}
+
+static int d3d12va_encode_h264_init_picture_params(AVCodecContext *avctx,
+                                                   FFHWBaseEncodePicture *base_pic)
+{
+    D3D12VAEncodeH264Context    *ctx = avctx->priv_data;
+    D3D12VAEncodePicture        *pic = base_pic->priv;
+    D3D12VAEncodeH264Picture    *hpic = base_pic->codec_priv;
+    FFHWBaseEncodePicture       *prev = base_pic->prev;
+    D3D12VAEncodeH264Picture    *hprev = prev ? prev->codec_priv : NULL;
+    D3D12_VIDEO_ENCODER_REFERENCE_PICTURE_DESCRIPTOR_H264 *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_H264);
+    pic->pic_ctl.pH264PicData = av_mallocz(pic->pic_ctl.DataSize);
+    if (!pic->pic_ctl.pH264PicData)
+        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;
+        ctx->idr_pic_id++;
+    } 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.pH264PicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_H264_IDR_FRAME;
+            pic->pic_ctl.pH264PicData->idr_pic_id = ctx->idr_pic_id;
+            break;
+        case FF_HW_PICTURE_TYPE_I:
+            pic->pic_ctl.pH264PicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_H264_I_FRAME;
+            break;
+        case FF_HW_PICTURE_TYPE_P:
+            pic->pic_ctl.pH264PicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_H264_P_FRAME;
+            break;
+        case FF_HW_PICTURE_TYPE_B:
+            pic->pic_ctl.pH264PicData->FrameType = D3D12_VIDEO_ENCODER_FRAME_TYPE_H264_B_FRAME;
+            break;
+        default:
+            av_assert0(0 && "invalid picture type");
+    }
+
+    pic->pic_ctl.pH264PicData->PictureOrderCountNumber    = hpic->pic_order_cnt;
+    pic->pic_ctl.pH264PicData->FrameDecodingOrderNumber   = 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.pH264PicData->List0ReferenceFramesCount = base_pic->nb_refs[0];
+        for (i = 0; i < base_pic->nb_refs[0]; i++) {
+            FFHWBaseEncodePicture *ref = base_pic->refs[0][i];
+            D3D12VAEncodeH264Picture *href;
+
+            av_assert0(ref && ref->encode_order < base_pic->encode_order);
+            href = ref->codec_priv;
+
+            ref_list0[i] = idx;
+            pd[idx].ReconstructedPictureResourceIndex = idx;
+            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.pH264PicData->List1ReferenceFramesCount = base_pic->nb_refs[1];
+        for (i = 0; i < base_pic->nb_refs[1]; i++) {
+            FFHWBaseEncodePicture *ref = base_pic->refs[1][i];
+            D3D12VAEncodeH264Picture *href;
+
+            av_assert0(ref && ref->encode_order < base_pic->encode_order);
+            href = ref->codec_priv;
+
+            ref_list1[i] = idx;
+            pd[idx].ReconstructedPictureResourceIndex = idx;
+            pd[idx].PictureOrderCountNumber = href->pic_order_cnt;
+            idx++;
+        }
+    }
+
+    pic->pic_ctl.pH264PicData->pList0ReferenceFrames = ref_list0;
+    pic->pic_ctl.pH264PicData->pList1ReferenceFrames = ref_list1;
+    pic->pic_ctl.pH264PicData->ReferenceFramesReconPictureDescriptorsCount = idx;
+    pic->pic_ctl.pH264PicData->pReferenceFramesReconPictureDescriptors = pd;
+
+    return 0;
+}
+
+static const D3D12VAEncodeType d3d12va_encode_type_h264 = {
+    .profiles               = d3d12va_encode_h264_profiles,
+
+    .d3d12_codec            = D3D12_VIDEO_ENCODER_CODEC_H264,
+
+    .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_h264_get_encoder_caps,
+
+    .configure              = &d3d12va_encode_h264_configure,
+
+    .set_level              = &d3d12va_encode_h264_set_level,
+
+    .picture_priv_data_size = sizeof(D3D12VAEncodeH264Picture),
+
+    .init_sequence_params   = &d3d12va_encode_h264_init_sequence_params,
+
+    .init_picture_params    = &d3d12va_encode_h264_init_picture_params,
+
+    .free_picture_params    = &d3d12va_encode_h264_free_picture_params,
+
+    .write_sequence_header  = &d3d12va_encode_h264_write_sequence_header,
+};
+
+static int d3d12va_encode_h264_init(AVCodecContext *avctx)
+{
+    D3D12VAEncodeContext        *ctx = avctx->priv_data;
+    D3D12VAEncodeH264Context    *priv = avctx->priv_data;
+
+    ctx->codec = &d3d12va_encode_type_h264;
+
+    if (avctx->profile == AV_PROFILE_UNKNOWN)
+        avctx->profile = priv->profile;
+    if (avctx->level == AV_LEVEL_UNKNOWN)
+        avctx->level = priv->level;
+
+    if (avctx->level != AV_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_h264_close(AVCodecContext *avctx)
+{
+    D3D12VAEncodeH264Context *priv = avctx->priv_data;
+
+    ff_cbs_fragment_free(&priv->current_access_unit);
+    ff_cbs_close(&priv->cbc);
+
+    av_freep(&priv->common.codec_conf.pH264Config);
+    av_freep(&priv->common.gop.pH264GroupOfPictures);
+    av_freep(&priv->common.level.pH264LevelSetting);
+
+    if (priv->common.rc.ConfigParams.pConfiguration_CQP != NULL) {
+        av_freep(&priv->common.rc.ConfigParams.pConfiguration_CQP);
+    }
+
+    return ff_d3d12va_encode_close(avctx);
+}
+
+#define OFFSET(x) offsetof(D3D12VAEncodeH264Context, x)
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
+static const AVOption d3d12va_encode_h264_options[] = {
+    HW_BASE_ENCODE_COMMON_OPTIONS,
+    D3D12VA_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_H264_MAIN) },
+    { PROFILE("high",               AV_PROFILE_H264_HIGH) },
+    { PROFILE("high10",             AV_PROFILE_H264_HIGH_10) },
+#undef PROFILE
+
+    { "level", "Set level (general_level_idc)",
+      OFFSET(level), AV_OPT_TYPE_INT,
+      { .i64 = AV_LEVEL_UNKNOWN }, AV_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },
+
+#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
+      { .i64 = value }, 0, 0, FLAGS, "level"
+    { LEVEL("1",    10) },
+    { LEVEL("1.1",  11) },
+    { LEVEL("1.2",  12) },
+    { LEVEL("1.3",  13) },
+    { LEVEL("2",    20) },
+    { LEVEL("2.1",  21) },
+    { LEVEL("2.2",  22) },
+    { LEVEL("3",    30) },
+    { LEVEL("3.1",  31) },
+    { LEVEL("3.2",  32) },
+    { LEVEL("4",    40) },
+    { LEVEL("4.1",  41) },
+    { LEVEL("4.2",  42) },
+    { LEVEL("5",    50) },
+    { LEVEL("5.1",  51) },
+    { LEVEL("5.2",  52) },
+    { LEVEL("6",    60) },
+    { LEVEL("6.1",  61) },
+    { LEVEL("6.2",  62) },
+#undef LEVEL
+
+    { NULL },
+};
+
+static const FFCodecDefault d3d12va_encode_h264_defaults[] = {
+    { "b",              "0"   },
+    { "bf",             "2"   },
+    { "g",              "120" },
+    { "qmin",           "-1"  },
+    { "qmax",           "-1"  },
+    { NULL },
+};
+
+static const AVClass d3d12va_encode_h264_class = {
+    .class_name = "h264_d3d12va",
+    .item_name  = av_default_item_name,
+    .option     = d3d12va_encode_h264_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+const FFCodec ff_h264_d3d12va_encoder = {
+    .p.name         = "h264_d3d12va",
+    CODEC_LONG_NAME("D3D12VA h264 encoder"),
+    .p.type         = AVMEDIA_TYPE_VIDEO,
+    .p.id           = AV_CODEC_ID_H264,
+    .priv_data_size = sizeof(D3D12VAEncodeH264Context),
+    .init           = &d3d12va_encode_h264_init,
+    FF_CODEC_RECEIVE_PACKET_CB(&ff_d3d12va_encode_receive_packet),
+    .close          = &d3d12va_encode_h264_close,
+    .p.priv_class   = &d3d12va_encode_h264_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_h264_defaults,
+    CODEC_PIXFMTS(AV_PIX_FMT_D3D12),
+    .hw_configs     = ff_d3d12va_encode_hw_configs,
+    .p.wrapper_name = "d3d12va",
+};