[FFmpeg-devel,v5,7/8] lavc/vaapi_encode: Add VAAPI AV1 encoder

From: Fei Wang <fei.w.wang@intel.com>

Signed-off-by: Fei Wang <fei.w.wang@intel.com>
---
Update:
1. use AV_PROFILE* instead of deprecated FF_PROFILE*.

 Changelog                     |   1 +
 configure                     |   3 +
 doc/encoders.texi             |  14 +
 libavcodec/Makefile           |   2 +
 libavcodec/allcodecs.c        |   1 +
 libavcodec/av1_levels.c       |  92 ++++
 libavcodec/av1_levels.h       |  58 +++
 libavcodec/vaapi_encode.c     | 198 +++++--
 libavcodec/vaapi_encode.h     |  24 +
 libavcodec/vaapi_encode_av1.c | 949 ++++++++++++++++++++++++++++++++++
 libavcodec/version.h          |   2 +-
 11 files changed, 1311 insertions(+), 33 deletions(-)
 create mode 100644 libavcodec/av1_levels.c
 create mode 100644 libavcodec/av1_levels.h
 create mode 100644 libavcodec/vaapi_encode_av1.c

On Mon, Sep 11, 2023 at 3:53 AM <fei.w.wang-at-intel.com@ffmpeg.org> wrote:
>
> From: Fei Wang <fei.w.wang@intel.com>
>
> Signed-off-by: Fei Wang <fei.w.wang@intel.com>
> ---
> Update:
> 1. use AV_PROFILE* instead of deprecated FF_PROFILE*.
>
>  Changelog                     |   1 +
>  configure                     |   3 +
>  doc/encoders.texi             |  14 +
>  libavcodec/Makefile           |   2 +
>  libavcodec/allcodecs.c        |   1 +
>  libavcodec/av1_levels.c       |  92 ++++
>  libavcodec/av1_levels.h       |  58 +++
>  libavcodec/vaapi_encode.c     | 198 +++++--
>  libavcodec/vaapi_encode.h     |  24 +
>  libavcodec/vaapi_encode_av1.c | 949 ++++++++++++++++++++++++++++++++++
>  libavcodec/version.h          |   2 +-
>  11 files changed, 1311 insertions(+), 33 deletions(-)
>  create mode 100644 libavcodec/av1_levels.c
>  create mode 100644 libavcodec/av1_levels.h
>  create mode 100644 libavcodec/vaapi_encode_av1.c
>
> diff --git a/Changelog b/Changelog
> index 0cfcecfb93..303a3d9ca2 100644
> --- a/Changelog
> +++ b/Changelog
> @@ -32,6 +32,7 @@ version <next>:
>  - apsnr and asisdr audio filters
>  - OSQ demuxer and decoder
>  - Support HEVC,VP9,AV1 codec fourcclist in enhanced rtmp protocol
> +- VAAPI AV1 encoder
>
>
>  version 6.0:
> diff --git a/configure b/configure
> index bd7f7697c8..ec7a80cd48 100755
> --- a/configure
> +++ b/configure
> @@ -3323,6 +3323,8 @@ av1_qsv_decoder_select="qsvdec"
>  av1_qsv_encoder_select="qsvenc"
>  av1_qsv_encoder_deps="libvpl"
>  av1_amf_encoder_deps="amf"
> +av1_vaapi_encoder_deps="VAEncPictureParameterBufferAV1"
> +av1_vaapi_encoder_select="cbs_av1 vaapi_encode"
>
>  # parsers
>  aac_parser_select="adts_header mpeg4audio"
> @@ -7110,6 +7112,7 @@ if enabled vaapi; then
>      check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
>      check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
>      check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
> +    check_type "va/va.h va/va_enc_av1.h"  "VAEncPictureParameterBufferAV1"
>  fi
>
>  if enabled_all opencl libdrm ; then
> diff --git a/doc/encoders.texi b/doc/encoders.texi
> index 6f8f5e127e..d7d9584a0c 100644
> --- a/doc/encoders.texi
> +++ b/doc/encoders.texi
> @@ -3995,6 +3995,20 @@ Average variable bitrate.
>  Each encoder also has its own specific options:
>  @table @option
>
> +@item av1_vaapi
> +@option{profile} sets the value of @emph{seq_profile}.
> +@option{tier} sets the value of @emph{seq_tier}.
> +@option{level} sets the value of @emph{seq_level_idx}.
> +
> +@table @option
> +@item tiles
> +Set the number of tiles to encode the input video with, as columns x rows.
> +(default is auto, which means use minimal tile column/row number).
> +@item tile_groups
> +Set tile groups number. All the tiles will be distributed as evenly as possible to
> +each tile group. (default is 1).
> +@end table
> +
>  @item h264_vaapi
>  @option{profile} sets the value of @emph{profile_idc} and the @emph{constraint_set*_flag}s.
>  @option{level} sets the value of @emph{level_idc}.
> diff --git a/libavcodec/Makefile b/libavcodec/Makefile
> index bf3b0a93f9..cae2e773a1 100644
> --- a/libavcodec/Makefile
> +++ b/libavcodec/Makefile
> @@ -258,6 +258,7 @@ OBJS-$(CONFIG_AV1_MEDIACODEC_DECODER)  += mediacodecdec.o
>  OBJS-$(CONFIG_AV1_MEDIACODEC_ENCODER)  += mediacodecenc.o
>  OBJS-$(CONFIG_AV1_NVENC_ENCODER)       += nvenc_av1.o nvenc.o
>  OBJS-$(CONFIG_AV1_QSV_ENCODER)         += qsvenc_av1.o
> +OBJS-$(CONFIG_AV1_VAAPI_ENCODER)       += vaapi_encode_av1.o av1_levels.o
>  OBJS-$(CONFIG_AVRN_DECODER)            += avrndec.o
>  OBJS-$(CONFIG_AVRP_DECODER)            += r210dec.o
>  OBJS-$(CONFIG_AVRP_ENCODER)            += r210enc.o
> @@ -1322,6 +1323,7 @@ TESTPROGS = avcodec                                                     \
>              jpeg2000dwt                                                 \
>              mathops                                                    \
>
> +TESTPROGS-$(CONFIG_AV1_VAAPI_ENCODER)     += av1_levels
>  TESTPROGS-$(CONFIG_CABAC)                 += cabac
>  TESTPROGS-$(CONFIG_DCT)                   += avfft
>  TESTPROGS-$(CONFIG_FFT)                   += fft fft-fixed32
> diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
> index 6e95ca5636..5136a566f1 100644
> --- a/libavcodec/allcodecs.c
> +++ b/libavcodec/allcodecs.c
> @@ -845,6 +845,7 @@ extern const FFCodec ff_av1_nvenc_encoder;
>  extern const FFCodec ff_av1_qsv_decoder;
>  extern const FFCodec ff_av1_qsv_encoder;
>  extern const FFCodec ff_av1_amf_encoder;
> +extern const FFCodec ff_av1_vaapi_encoder;
>  extern const FFCodec ff_libopenh264_encoder;
>  extern const FFCodec ff_libopenh264_decoder;
>  extern const FFCodec ff_h264_amf_encoder;
> diff --git a/libavcodec/av1_levels.c b/libavcodec/av1_levels.c
> new file mode 100644
> index 0000000000..19b6ee1736
> --- /dev/null
> +++ b/libavcodec/av1_levels.c
> @@ -0,0 +1,92 @@
> +/*
> + * Copyright (c) 2023 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 <stddef.h>
> +#include "libavutil/macros.h"
> +#include "av1_levels.h"
> +
> +/** ignore entries which named in spec but no details. Like level 2.2 and 7.0. */
> +static const AV1LevelDescriptor av1_levels[] = {
> +    // Name                      MaxVSize                           MainMbps              MaxTiles
> +    // |  level_idx                 | MaxDisplayRate                    | HighMbps         | MaxTileCols
> +    // |      |   MaxPicSize        |       |     MaxDecodeRate         |    |   MainCR    |   |
> +    // |      |     |    MaxHSize   |       |           | MaxHeaderRate |    |     | HighCR|   |
> +    // |      |     |        |      |       |           |       |       |    |     |  |    |   |
> +    { "2.0",  0,   147456,  2048, 1152,   4423680,     5529600, 150,   1.5,     0, 2, 0,   8,  4 },
> +    { "2.1",  1,   278784,  2816, 1584,   8363520,    10454400, 150,   3.0,     0, 2, 0,   8,  4 },
> +    { "3.0",  4,   665856,  4352, 2448,  19975680,    24969600, 150,   6.0,     0, 2, 0,  16,  6 },
> +    { "3.1",  5,  1065024,  5504, 3096,  31950720,    39938400, 150,  10.0,     0, 2, 0,  16,  6 },
> +    { "4.0",  8,  2359296,  6144, 3456,  70778880,    77856768, 300,  12.0,  30.0, 4, 4,  32,  8 },
> +    { "4.1",  9,  2359296,  6144, 3456,  141557760,  155713536, 300,  20.0,  50.0, 4, 4,  32,  8 },
> +    { "5.0", 12,  8912896,  8192, 4352,  267386880,  273715200, 300,  30.0, 100.0, 6, 4,  64,  8 },
> +    { "5.1", 13,  8912896,  8192, 4352,  534773760,  547430400, 300,  40.0, 160.0, 8, 4,  64,  8 },
> +    { "5.2", 14,  8912896,  8192, 4352, 1069547520, 1094860800, 300,  60.0, 240.0, 8, 4,  64,  8 },
> +    { "5.3", 15,  8912896,  8192, 4352, 1069547520, 1176502272, 300,  60.0, 240.0, 8, 4,  64,  8 },
> +    { "6.0", 16, 35651584, 16384, 8704, 1069547520, 1176502272, 300,  60.0, 240.0, 8, 4, 128, 16 },
> +    { "6.1", 17, 35651584, 16384, 8704, 2139095040, 2189721600, 300, 100.0, 480.0, 8, 4, 128, 16 },
> +    { "6.2", 18, 35651584, 16384, 8704, 4278190080, 4379443200, 300, 160.0, 800.0, 8, 4, 128, 16 },
> +    { "6.3", 19, 35651584, 16384, 8704, 4278190080, 4706009088, 300, 160.0, 800.0, 8, 4, 128, 16 },
> +};
> +
> +const AV1LevelDescriptor *ff_av1_guess_level(int64_t bitrate,
> +                                             int tier,
> +                                             int width,
> +                                             int height,
> +                                             int tiles,
> +                                             int tile_cols,
> +                                             float fps)
> +{
> +    int pic_size;
> +    uint64_t display_rate;
> +    float max_br;
> +
> +    pic_size = width * height;
> +    display_rate = (uint64_t)pic_size * fps;
> +
> +    for (int i = 0; i < FF_ARRAY_ELEMS(av1_levels); i++) {
> +        const AV1LevelDescriptor *level = &av1_levels[i];
> +        // Limitation: decode rate, header rate, compress rate, etc. are not considered.
> +        if (pic_size > level->max_pic_size)
> +            continue;
> +        if (width > level->max_h_size)
> +            continue;
> +        if (height > level->max_v_size)
> +            continue;
> +        if (display_rate > level->max_display_rate)
> +            continue;
> +
> +        if (tier)
> +            max_br = level->high_mbps;
> +        else
> +            max_br = level->main_mbps;
> +        if (!max_br)
> +            continue;
> +        if (bitrate > (int64_t)(1000000.0 * max_br))
> +            continue;
> +
> +        if (tiles > level->max_tiles)
> +            continue;
> +        if (tile_cols > level->max_tile_cols)
> +            continue;
> +        return level;
> +    }
> +
> +    return NULL;
> +}
> diff --git a/libavcodec/av1_levels.h b/libavcodec/av1_levels.h
> new file mode 100644
> index 0000000000..164cb876ba
> --- /dev/null
> +++ b/libavcodec/av1_levels.h
> @@ -0,0 +1,58 @@
> +/*
> + * Copyright (c) 2023 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
> + */
> +
> +#ifndef AVCODEC_AV1_LEVELS_H
> +#define AVCODEC_AV1_LEVELS_H
> +
> +#include <stdint.h>
> +
> +typedef struct AV1LevelDescriptor {
> +    char     name[4];
> +    uint8_t  level_idx;
> +
> +    uint32_t max_pic_size;
> +    uint32_t max_h_size;
> +    uint32_t max_v_size;
> +    uint64_t max_display_rate;
> +    uint64_t max_decode_rate;
> +
> +    uint32_t max_header_rate;
> +    float    main_mbps;
> +    float    high_mbps;
> +    uint32_t main_cr;
> +    uint32_t high_cr;
> +    uint32_t max_tiles;
> +    uint32_t max_tile_cols;
> +} AV1LevelDescriptor;
> +
> +/**
> + * Guess the level of a stream from some parameters.
> + *
> + * Unknown parameters may be zero, in which case they will be ignored.
> + */
> +const AV1LevelDescriptor *ff_av1_guess_level(int64_t bitrate,
> +                                             int tier,
> +                                             int width,
> +                                             int height,
> +                                             int tile_rows,
> +                                             int tile_cols,
> +                                             float fps);
> +
> +#endif /* AVCODEC_AV1_LEVELS_H */
> diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c
> index 79036673e7..e3820956d1 100644
> --- a/libavcodec/vaapi_encode.c
> +++ b/libavcodec/vaapi_encode.c
> @@ -683,6 +683,11 @@ static int vaapi_encode_set_output_property(AVCodecContext *avctx,
>          pic->opaque_ref = NULL;
>      }
>
> +    if (ctx->codec->flags & FLAG_TIMESTAMP_NO_DELAY) {
> +        pkt->dts = pkt->pts;
> +        return 0;
> +    }
> +
>      if (ctx->output_delay == 0) {
>          pkt->dts = pkt->pts;
>      } else if (pic->encode_order < ctx->decode_delay) {
> @@ -698,65 +703,160 @@ static int vaapi_encode_set_output_property(AVCodecContext *avctx,
>      return 0;
>  }
>
> -static int vaapi_encode_output(AVCodecContext *avctx,
> -                               VAAPIEncodePicture *pic, AVPacket *pkt)
> +static int vaapi_encode_get_coded_buffer_size(AVCodecContext *avctx, VABufferID buf_id)
>  {
>      VAAPIEncodeContext *ctx = avctx->priv_data;
>      VACodedBufferSegment *buf_list, *buf;
> +    int size = 0;
>      VAStatus vas;
> -    int total_size = 0;
> -    uint8_t *ptr;
>      int err;
>
> -    err = vaapi_encode_wait(avctx, pic);
> -    if (err < 0)
> -        return err;
> -
> -    buf_list = NULL;
> -    vas = vaMapBuffer(ctx->hwctx->display, pic->output_buffer,
> +    vas = vaMapBuffer(ctx->hwctx->display, buf_id,
>                        (void**)&buf_list);
>      if (vas != VA_STATUS_SUCCESS) {
>          av_log(avctx, AV_LOG_ERROR, "Failed to map output buffers: "
>                 "%d (%s).\n", vas, vaErrorStr(vas));
>          err = AVERROR(EIO);
> -        goto fail;
> +        return err;
>      }
>
>      for (buf = buf_list; buf; buf = buf->next)
> -        total_size += buf->size;
> +        size += buf->size;
>
> -    err = ff_get_encode_buffer(avctx, pkt, total_size, 0);
> -    ptr = pkt->data;
> +    vas = vaUnmapBuffer(ctx->hwctx->display, buf_id);
> +    if (vas != VA_STATUS_SUCCESS) {
> +        av_log(avctx, AV_LOG_ERROR, "Failed to unmap output buffers: "
> +               "%d (%s).\n", vas, vaErrorStr(vas));
> +        err = AVERROR(EIO);
> +        return err;
> +    }
>
> -    if (err < 0)
> -        goto fail_mapped;
> +    return size;
> +}
> +
> +static int vaapi_encode_get_coded_buffer_data(AVCodecContext *avctx,
> +                                              VABufferID buf_id, uint8_t **dst)
> +{
> +    VAAPIEncodeContext *ctx = avctx->priv_data;
> +    VACodedBufferSegment *buf_list, *buf;
> +    VAStatus vas;
> +    int err;
> +
> +    vas = vaMapBuffer(ctx->hwctx->display, buf_id,
> +                      (void**)&buf_list);
> +    if (vas != VA_STATUS_SUCCESS) {
> +        av_log(avctx, AV_LOG_ERROR, "Failed to map output buffers: "
> +               "%d (%s).\n", vas, vaErrorStr(vas));
> +        err = AVERROR(EIO);
> +        return err;
> +    }
>
>      for (buf = buf_list; buf; buf = buf->next) {
>          av_log(avctx, AV_LOG_DEBUG, "Output buffer: %u bytes "
>                 "(status %08x).\n", buf->size, buf->status);
>
> -        memcpy(ptr, buf->buf, buf->size);
> -        ptr += buf->size;
> +        memcpy(*dst, buf->buf, buf->size);
> +        *dst += buf->size;
>      }
>
> -    vas = vaUnmapBuffer(ctx->hwctx->display, pic->output_buffer);
> +    vas = vaUnmapBuffer(ctx->hwctx->display, buf_id);
>      if (vas != VA_STATUS_SUCCESS) {
>          av_log(avctx, AV_LOG_ERROR, "Failed to unmap output buffers: "
>                 "%d (%s).\n", vas, vaErrorStr(vas));
>          err = AVERROR(EIO);
> -        goto fail;
> +        return err;
> +    }
> +
> +    return 0;
> +}
> +
> +static int vaapi_encode_get_coded_data(AVCodecContext *avctx,
> +                                       VAAPIEncodePicture *pic, AVPacket *pkt)
> +{
> +    VAAPIEncodeContext *ctx = avctx->priv_data;
> +    VABufferID output_buffer_prev;
> +    int total_size = 0;
> +    uint8_t *ptr;
> +    int ret;
> +
> +    if (ctx->coded_buffer_ref) {
> +        output_buffer_prev = (VABufferID)(uintptr_t)ctx->coded_buffer_ref->data;
> +        ret = vaapi_encode_get_coded_buffer_size(avctx, output_buffer_prev);
> +        if (ret < 0)
> +            goto end;
> +        total_size += ret;
>      }
>
> +    ret = vaapi_encode_get_coded_buffer_size(avctx, pic->output_buffer);
> +    if (ret < 0)
> +        goto end;
> +    total_size += ret;
> +
> +    ret = ff_get_encode_buffer(avctx, pkt, total_size, 0);
> +    if (ret < 0)
> +        goto end;
> +    ptr = pkt->data;
> +
> +    if (ctx->coded_buffer_ref) {
> +        ret = vaapi_encode_get_coded_buffer_data(avctx, output_buffer_prev, &ptr);
> +        if (ret < 0)
> +            goto end;
> +    }
> +
> +    ret = vaapi_encode_get_coded_buffer_data(avctx, pic->output_buffer, &ptr);
> +    if (ret < 0)
> +        goto end;
> +
> +end:
> +    if (ctx->coded_buffer_ref) {
> +        av_buffer_unref(&ctx->coded_buffer_ref);
> +    }
>      av_buffer_unref(&pic->output_buffer_ref);
>      pic->output_buffer = VA_INVALID_ID;
>
> +    return ret;
> +}
> +
> +static int vaapi_encode_output(AVCodecContext *avctx,
> +                               VAAPIEncodePicture *pic, AVPacket *pkt)
> +{
> +    VAAPIEncodeContext *ctx = avctx->priv_data;
> +    AVPacket *pkt_ptr = pkt;
> +    int err;
> +
> +    err = vaapi_encode_wait(avctx, pic);
> +    if (err < 0)
> +        return err;
> +
> +    if (pic->non_independent_frame) {
> +        av_assert0(!ctx->coded_buffer_ref);
> +        ctx->coded_buffer_ref = av_buffer_ref(pic->output_buffer_ref);
> +
> +        if (pic->tail_size) {
> +            if (ctx->tail_pkt->size) {
> +                err = AVERROR(AVERROR_BUG);
> +                goto end;
> +            }
> +
> +            err = ff_get_encode_buffer(avctx, ctx->tail_pkt, pic->tail_size, 0);
> +            if (err < 0)
> +                goto end;
> +
> +            memcpy(ctx->tail_pkt->data, pic->tail_data, pic->tail_size);
> +            pkt_ptr = ctx->tail_pkt;
> +        }
> +    } else {
> +        err = vaapi_encode_get_coded_data(avctx, pic, pkt);
> +        if (err < 0)
> +            goto end;
> +    }
> +
>      av_log(avctx, AV_LOG_DEBUG, "Output read for pic %"PRId64"/%"PRId64".\n",
>             pic->display_order, pic->encode_order);
> -    return 0;
>
> -fail_mapped:
> -    vaUnmapBuffer(ctx->hwctx->display, pic->output_buffer);
> -fail:
> +    vaapi_encode_set_output_property(avctx, pic, pkt_ptr);
> +
> +end:
>      av_buffer_unref(&pic->output_buffer_ref);
>      pic->output_buffer = VA_INVALID_ID;
>      return err;
> @@ -1128,9 +1228,19 @@ static int vaapi_encode_pick_next(AVCodecContext *avctx,
>
>      vaapi_encode_add_ref(avctx, pic, pic, 0, 1, 0);
>      if (pic->type != PICTURE_TYPE_IDR) {
> -        vaapi_encode_add_ref(avctx, pic, start,
> -                             pic->type == PICTURE_TYPE_P,
> -                             b_counter > 0, 0);
> +        // TODO: apply both previous and forward multi reference for all vaapi encoders.
> +        // And L0/L1 reference frame number can be set dynamically through query
> +        // VAConfigAttribEncMaxRefFrames attribute.
> +        if (avctx->codec_id == AV_CODEC_ID_AV1) {
> +            for (i = 0; i < ctx->nb_next_prev; i++)
> +                vaapi_encode_add_ref(avctx, pic, ctx->next_prev[i],
> +                                     pic->type == PICTURE_TYPE_P,
> +                                     b_counter > 0, 0);
> +        } else
> +            vaapi_encode_add_ref(avctx, pic, start,
> +                                 pic->type == PICTURE_TYPE_P,
> +                                 b_counter > 0, 0);
> +
>          vaapi_encode_add_ref(avctx, pic, ctx->next_prev[ctx->nb_next_prev - 1], 0, 0, 1);
>      }
>
> @@ -1292,6 +1402,19 @@ int ff_vaapi_encode_receive_packet(AVCodecContext *avctx, AVPacket *pkt)
>      AVFrame *frame = ctx->frame;
>      int err;
>
> +start:
> +    /** if no B frame before repeat P frame, sent repeat P frame out. */
> +    if (ctx->tail_pkt->size) {
> +        for (VAAPIEncodePicture *tmp = ctx->pic_start; tmp; tmp = tmp->next) {
> +            if (tmp->type == PICTURE_TYPE_B && tmp->pts < ctx->tail_pkt->pts)
> +                break;
> +            else if (!tmp->next) {
> +                av_packet_move_ref(pkt, ctx->tail_pkt);
> +                goto end;
> +            }
> +        }
> +    }
> +
>      err = ff_encode_get_frame(avctx, frame);
>      if (err < 0 && err != AVERROR_EOF)
>          return err;
> @@ -1356,17 +1479,21 @@ int ff_vaapi_encode_receive_packet(AVCodecContext *avctx, AVPacket *pkt)
>          return err;
>      }
>
> -    vaapi_encode_set_output_property(avctx, pic, pkt);
> -    av_log(avctx, AV_LOG_DEBUG, "Output packet: pts %"PRId64", dts %"PRId64", "
> -           "size %d bytes.\n", pkt->pts, pkt->dts, pkt->size);
> -
>      ctx->output_order = pic->encode_order;
>      vaapi_encode_clear_old(avctx);
>
> +    /** loop to get an available pkt in encoder flushing. */
> +    if (ctx->end_of_stream && !pkt->size)
> +        goto start;
> +
> +end:
> +    if (pkt->size)
> +        av_log(avctx, AV_LOG_DEBUG, "Output packet: pts %"PRId64", dts %"PRId64", "
> +               "size %d bytes.\n", pkt->pts, pkt->dts, pkt->size);
> +
>      return 0;
>  }
>
> -
>  static av_cold void vaapi_encode_add_global_param(AVCodecContext *avctx, int type,
>                                                    void *buffer, size_t size)
>  {
> @@ -2667,6 +2794,12 @@ av_cold int ff_vaapi_encode_init(AVCodecContext *avctx)
>      ctx->device = (AVHWDeviceContext*)ctx->device_ref->data;
>      ctx->hwctx = ctx->device->hwctx;
>
> +    ctx->tail_pkt = av_packet_alloc();
> +    if (!ctx->tail_pkt) {
> +        err = AVERROR(ENOMEM);
> +        goto fail;
> +    }
> +
>      err = vaapi_encode_profile_entrypoint(avctx);
>      if (err < 0)
>          goto fail;
> @@ -2859,6 +2992,7 @@ av_cold int ff_vaapi_encode_close(AVCodecContext *avctx)
>      }
>
>      av_frame_free(&ctx->frame);
> +    av_packet_free(&ctx->tail_pkt);
>
>      av_freep(&ctx->codec_sequence_params);
>      av_freep(&ctx->codec_picture_params);
> diff --git a/libavcodec/vaapi_encode.h b/libavcodec/vaapi_encode.h
> index 977bc2d946..d0d6cc2adf 100644
> --- a/libavcodec/vaapi_encode.h
> +++ b/libavcodec/vaapi_encode.h
> @@ -133,6 +133,17 @@ typedef struct VAAPIEncodePicture {
>
>      int          nb_slices;
>      VAAPIEncodeSlice *slices;
> +
> +    /**
> +     * indicate if current frame is an independent frame that the coded data
> +     * can be pushed to downstream directly. Coded of non-independent frame
> +     * data will be concatenated into next independent frame.
> +     */
> +    int non_independent_frame;
> +    /** Tail data of current pic, used only for repeat header of AV1. */
> +    char tail_data[MAX_PARAM_BUFFER_SIZE];
> +    /** Byte length of tail_data. */
> +    size_t tail_size;
>  } VAAPIEncodePicture;
>
>  typedef struct VAAPIEncodeProfile {
> @@ -367,6 +378,16 @@ typedef struct VAAPIEncodeContext {
>      AVFifo          *encode_fifo;
>      // Max number of frame buffered in encoder.
>      int             async_depth;
> +
> +    /** Head data for current output pkt, used only for AV1. */
> +    //void  *header_data;
> +    //size_t header_data_size;
> +
> +    /** Buffered coded data of a pic if it is an non-independent frame. */
> +    AVBufferRef     *coded_buffer_ref;
> +
> +    /** Tail data of a pic, now only used for av1 repeat frame header. */
> +    AVPacket        *tail_pkt;
>  } VAAPIEncodeContext;
>
>  enum {
> @@ -383,6 +404,9 @@ enum {
>      // Codec supports non-IDR key pictures (that is, key pictures do
>      // not necessarily empty the DPB).
>      FLAG_NON_IDR_KEY_PICTURES  = 1 << 5,
> +    // Codec output packet without timestamp delay, which means the
> +    // output packet has same PTS and DTS.
> +    FLAG_TIMESTAMP_NO_DELAY    = 1 << 6,
>  };
>
>  typedef struct VAAPIEncodeType {
> diff --git a/libavcodec/vaapi_encode_av1.c b/libavcodec/vaapi_encode_av1.c
> new file mode 100644
> index 0000000000..3ff1c47b53
> --- /dev/null
> +++ b/libavcodec/vaapi_encode_av1.c
> @@ -0,0 +1,949 @@
> +/*
> + * Copyright (c) 2023 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 <va/va.h>
> +#include <va/va_enc_av1.h>
> +
> +#include "libavutil/pixdesc.h"
> +#include "libavutil/opt.h"
> +
> +#include "cbs_av1.h"
> +#include "put_bits.h"
> +#include "codec_internal.h"
> +#include "av1_levels.h"
> +#include "vaapi_encode.h"
> +
> +#define AV1_MAX_QUANT 255
> +
> +typedef struct VAAPIEncodeAV1Picture {
> +    int64_t last_idr_frame;
> +    int slot;
> +} VAAPIEncodeAV1Picture;
> +
> +typedef struct VAAPIEncodeAV1Context {
> +    VAAPIEncodeContext common;
> +    AV1RawOBU sh; /**< sequence header.*/
> +    AV1RawOBU fh; /**< frame header.*/
> +    CodedBitstreamContext *cbc;
> +    CodedBitstreamFragment current_obu;
> +    VAConfigAttribValEncAV1 attr;
> +    VAConfigAttribValEncAV1Ext1 attr_ext1;
> +    VAConfigAttribValEncAV1Ext2 attr_ext2;
> +
> +    char sh_data[MAX_PARAM_BUFFER_SIZE]; /**< coded sequence header data. */
> +    size_t sh_data_len; /**< bit length of sh_data. */
> +    char fh_data[MAX_PARAM_BUFFER_SIZE]; /**< coded frame header data. */
> +    size_t fh_data_len; /**< bit length of fh_data. */
> +
> +    uint8_t uniform_tile;
> +    uint8_t use_128x128_superblock;
> +    int sb_cols;
> +    int sb_rows;
> +    int tile_cols_log2;
> +    int tile_rows_log2;
> +    int max_tile_width_sb;
> +    int max_tile_height_sb;
> +    uint8_t width_in_sbs_minus_1[AV1_MAX_TILE_COLS];
> +    uint8_t height_in_sbs_minus_1[AV1_MAX_TILE_ROWS];
> +
> +    int min_log2_tile_cols;
> +    int max_log2_tile_cols;
> +    int min_log2_tile_rows;
> +    int max_log2_tile_rows;
> +
> +    int q_idx_idr;
> +    int q_idx_p;
> +    int q_idx_b;
> +
> +    /** bit positions in current frame header */
> +    int qindex_offset;
> +    int loopfilter_offset;
> +    int cdef_start_offset;
> +    int cdef_param_size;
> +
> +    /** user options */
> +    int profile;
> +    int level;
> +    int tier;
> +    int tile_cols, tile_rows;
> +    int tile_groups;
> +} VAAPIEncodeAV1Context;
> +
> +static void vaapi_encode_av1_trace_write_log(void *ctx,
> +                                             PutBitContext *pbc, int length,
> +                                             const char *str, const int *subscripts,
> +                                             int64_t value)
> +{
> +    VAAPIEncodeAV1Context *priv = ctx;
> +    int position;
> +
> +    position = put_bits_count(pbc);
> +    av_assert0(position >= length);
> +
> +    if (!strcmp(str, "base_q_idx"))
> +        priv->qindex_offset = position - length;
> +    else if (!strcmp(str, "loop_filter_level[0]"))
> +        priv->loopfilter_offset = position - length;
> +    else if (!strcmp(str, "cdef_damping_minus_3"))
> +        priv->cdef_start_offset = position - length;
> +    else if (!strcmp(str, "cdef_uv_sec_strength[i]"))
> +        priv->cdef_param_size = position - priv->cdef_start_offset;
> +}
> +
> +static av_cold int vaapi_encode_av1_get_encoder_caps(AVCodecContext *avctx)
> +{
> +    VAAPIEncodeContext *ctx = avctx->priv_data;
> +    VAAPIEncodeAV1Context *priv = avctx->priv_data;
> +
> +    // Surfaces must be aligned to superblock boundaries.
> +    ctx->surface_width  = FFALIGN(avctx->width,  priv->use_128x128_superblock ? 128 : 64);
> +    ctx->surface_height = FFALIGN(avctx->height, priv->use_128x128_superblock ? 128 : 64);
> +
> +    return 0;
> +}
> +
> +static av_cold int vaapi_encode_av1_configure(AVCodecContext *avctx)
> +{
> +    VAAPIEncodeContext     *ctx = avctx->priv_data;
> +    VAAPIEncodeAV1Context *priv = avctx->priv_data;
> +    int ret;
> +
> +    ret = ff_cbs_init(&priv->cbc, AV_CODEC_ID_AV1, avctx);
> +    if (ret < 0)
> +        return ret;
> +    priv->cbc->trace_enable  = 1;
> +    priv->cbc->trace_level   = AV_LOG_DEBUG;
> +    priv->cbc->trace_context = ctx;
> +    priv->cbc->trace_write_callback = vaapi_encode_av1_trace_write_log;
> +
> +    if (ctx->rc_mode->quality) {
> +        priv->q_idx_p = av_clip(ctx->rc_quality, 0, AV1_MAX_QUANT);
> +        if (fabs(avctx->i_quant_factor) > 0.0)
> +            priv->q_idx_idr =
> +                av_clip((fabs(avctx->i_quant_factor) * priv->q_idx_p  +
> +                         avctx->i_quant_offset) + 0.5,
> +                        0, AV1_MAX_QUANT);
> +        else
> +            priv->q_idx_idr = priv->q_idx_p;
> +
> +        if (fabs(avctx->b_quant_factor) > 0.0)
> +            priv->q_idx_b =
> +                av_clip((fabs(avctx->b_quant_factor) * priv->q_idx_p  +
> +                         avctx->b_quant_offset) + 0.5,
> +                        0, AV1_MAX_QUANT);
> +        else
> +            priv->q_idx_b = priv->q_idx_p;
> +    } else {
> +        /** Arbitrary value */
> +        priv->q_idx_idr = priv->q_idx_p = priv->q_idx_b = 128;
> +    }
> +
> +    return 0;
> +}
> +
> +static int vaapi_encode_av1_add_obu(AVCodecContext *avctx,
> +                                    CodedBitstreamFragment *au,
> +                                    uint8_t type,
> +                                    void *obu_unit)
> +{
> +    int ret;
> +
> +    ret = ff_cbs_insert_unit_content(au, -1,
> +                                     type, obu_unit, NULL);
> +    if (ret < 0) {
> +        av_log(avctx, AV_LOG_ERROR, "Failed to add OBU unit: "
> +               "type = %d.\n", type);
> +        return ret;
> +    }
> +
> +    return 0;
> +}
> +
> +static int vaapi_encode_av1_write_obu(AVCodecContext *avctx,
> +                                      char *data, size_t *data_len,
> +                                      CodedBitstreamFragment *bs)
> +{
> +    VAAPIEncodeAV1Context *priv = avctx->priv_data;
> +    int ret;
> +
> +    ret = ff_cbs_write_fragment_data(priv->cbc, bs);
> +    if (ret < 0) {
> +        av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
> +        return ret;
> +    }
> +
> +    if ((size_t)8 * MAX_PARAM_BUFFER_SIZE < 8 * bs->data_size - bs->data_bit_padding) {
> +        av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
> +               "%zu < %zu.\n", (size_t)8 * MAX_PARAM_BUFFER_SIZE,
> +               8 * bs->data_size - bs->data_bit_padding);
> +        return AVERROR(ENOSPC);
> +    }
> +
> +    memcpy(data, bs->data, bs->data_size);
> +    *data_len = 8 * bs->data_size - bs->data_bit_padding;
> +
> +    return 0;
> +}
> +
> +static int tile_log2(int blkSize, int target) {
> +    int k;
> +    for (k = 0; (blkSize << k) < target; k++);
> +    return k;
> +}
> +
> +static int vaapi_encode_av1_set_tile(AVCodecContext *avctx)
> +{
> +    VAAPIEncodeAV1Context *priv = avctx->priv_data;
> +    int mi_cols, mi_rows, sb_shift, sb_size;
> +    int max_tile_area_sb, max_tile_area_sb_varied;
> +    int tile_width_sb, tile_height_sb, widest_tile_sb;
> +    int tile_cols, tile_rows;
> +    int min_log2_tiles;
> +    int i;
> +
> +    if (priv->tile_cols > AV1_MAX_TILE_COLS ||
> +        priv->tile_rows > AV1_MAX_TILE_ROWS) {
> +        av_log(avctx, AV_LOG_ERROR, "Invalid tile number %dx%d, should less than %dx%d.\n",
> +               priv->tile_cols, priv->tile_rows, AV1_MAX_TILE_COLS, AV1_MAX_TILE_ROWS);
> +        return AVERROR(EINVAL);
> +    }
> +
> +    mi_cols = 2 * ((avctx->width + 7) >> 3);
> +    mi_rows = 2 * ((avctx->height + 7) >> 3);
> +    priv->sb_cols = priv->use_128x128_superblock ?
> +                    ((mi_cols + 31) >> 5) : ((mi_cols + 15) >> 4);
> +    priv->sb_rows = priv->use_128x128_superblock ?
> +                    ((mi_rows + 31) >> 5) : ((mi_rows + 15) >> 4);
> +    sb_shift = priv->use_128x128_superblock ? 5 : 4;
> +    sb_size  = sb_shift + 2;
> +    priv->max_tile_width_sb = AV1_MAX_TILE_WIDTH >> sb_size;
> +    max_tile_area_sb = AV1_MAX_TILE_AREA  >> (2 * sb_size);
> +
> +    priv->min_log2_tile_cols = tile_log2(priv->max_tile_width_sb, priv->sb_cols);
> +    priv->max_log2_tile_cols = tile_log2(1, FFMIN(priv->sb_cols, AV1_MAX_TILE_COLS));
> +    priv->max_log2_tile_rows = tile_log2(1, FFMIN(priv->sb_rows, AV1_MAX_TILE_ROWS));
> +    min_log2_tiles = FFMAX(priv->min_log2_tile_cols,
> +                           tile_log2(max_tile_area_sb, priv->sb_rows * priv->sb_cols));
> +
> +    tile_cols = av_clip(priv->tile_cols, (priv->sb_cols + priv->max_tile_width_sb - 1) / priv->max_tile_width_sb, priv->sb_cols);
> +
> +    if (!priv->tile_cols)
> +        priv->tile_cols = tile_cols;
> +    else if (priv->tile_cols != tile_cols){
> +        av_log(avctx, AV_LOG_ERROR, "Invalid tile cols %d, should be in range of %d~%d\n",
> +               priv->tile_cols,
> +               (priv->sb_cols + priv->max_tile_width_sb - 1) / priv->max_tile_width_sb,
> +               priv->sb_cols);
> +        return AVERROR(EINVAL);
> +    }
> +
> +    priv->tile_cols_log2 = tile_log2(1, priv->tile_cols);
> +    tile_width_sb = (priv->sb_cols + (1 << priv->tile_cols_log2) - 1) >>
> +                    priv->tile_cols_log2;
> +
> +    if (priv->tile_rows > priv->sb_rows) {
> +        av_log(avctx, AV_LOG_ERROR, "Invalid tile rows %d, should be less than %d.\n",
> +               priv->tile_rows, priv->sb_rows);
> +        return AVERROR(EINVAL);
> +    }
> +
> +    /** Try user setting tile rows number first. */
> +    tile_rows = priv->tile_rows ? priv->tile_rows : 1;
> +    for (; tile_rows <= priv->sb_rows && tile_rows <= AV1_MAX_TILE_ROWS; tile_rows++) {
> +        /** try uniformed tile. */
> +        priv->tile_rows_log2 = tile_log2(1, tile_rows);
> +        if ((priv->sb_cols + tile_width_sb - 1) / tile_width_sb == priv->tile_cols) {
> +            for (i = 0; i < priv->tile_cols - 1; i++)
> +                priv->width_in_sbs_minus_1[i] = tile_width_sb - 1;
> +            priv->width_in_sbs_minus_1[i] = priv->sb_cols - (priv->tile_cols - 1) * tile_width_sb - 1;
> +
> +            tile_height_sb = (priv->sb_rows + (1 << priv->tile_rows_log2) - 1) >>
> +                             priv->tile_rows_log2;
> +
> +            if ((priv->sb_rows + tile_height_sb - 1) / tile_height_sb == tile_rows &&
> +                tile_height_sb <= max_tile_area_sb / tile_width_sb) {
> +                for (i = 0; i < tile_rows - 1; i++)
> +                    priv->height_in_sbs_minus_1[i] = tile_height_sb - 1;
> +                priv->height_in_sbs_minus_1[i] = priv->sb_rows - (tile_rows - 1) * tile_height_sb - 1;
> +
> +                priv->uniform_tile = 1;
> +                priv->min_log2_tile_rows = FFMAX(min_log2_tiles - priv->tile_cols_log2, 0);
> +
> +                break;
> +            }
> +        }
> +
> +        /** try non-uniformed tile. */
> +        widest_tile_sb = 0;
> +        for (i = 0; i < priv->tile_cols; i++) {
> +            priv->width_in_sbs_minus_1[i] = (i + 1) * priv->sb_cols / priv->tile_cols - i * priv->sb_cols / priv->tile_cols - 1;
> +            widest_tile_sb = FFMAX(widest_tile_sb, priv->width_in_sbs_minus_1[i] + 1);
> +        }
> +
> +        if (min_log2_tiles)
> +            max_tile_area_sb_varied = (priv->sb_rows * priv->sb_cols) >> (min_log2_tiles + 1);
> +        else
> +            max_tile_area_sb_varied = priv->sb_rows * priv->sb_cols;
> +        priv->max_tile_height_sb = FFMAX(1, max_tile_area_sb_varied / widest_tile_sb);
> +
> +        if (tile_rows == av_clip(tile_rows, (priv->sb_rows + priv->max_tile_height_sb - 1) / priv->max_tile_height_sb, priv->sb_rows)) {
> +            for (i = 0; i < tile_rows; i++)
> +                priv->height_in_sbs_minus_1[i] = (i + 1) * priv->sb_rows / tile_rows - i * priv->sb_rows / tile_rows - 1;
> +
> +            break;
> +        }
> +
> +        /** Return invalid parameter if explicit tile rows is set. */
> +        if (priv->tile_rows) {
> +            av_log(avctx, AV_LOG_ERROR, "Invalid tile rows %d.\n", priv->tile_rows);
> +            return AVERROR(EINVAL);
> +        }
> +    }
> +
> +    priv->tile_rows = tile_rows;
> +    av_log(avctx, AV_LOG_DEBUG, "Setting tile cols/rows to %d/%d.\n",
> +           priv->tile_cols, priv->tile_rows);
> +
> +    /** check if tile cols/rows is supported by driver. */
> +    if (priv->attr_ext2.bits.max_tile_num_minus1) {
> +        if ((priv->tile_cols * priv->tile_rows - 1) > priv->attr_ext2.bits.max_tile_num_minus1) {
> +            av_log(avctx, AV_LOG_ERROR, "Unsupported tile num %d * %d = %d by driver, "
> +                   "should be at most %d.\n", priv->tile_cols, priv->tile_rows,
> +                   priv->tile_cols * priv->tile_rows,
> +                   priv->attr_ext2.bits.max_tile_num_minus1 + 1);
> +            return AVERROR(EINVAL);
> +        }
> +    }
> +
> +    /** check if tile group numbers is valid. */
> +    if (priv->tile_groups > priv->tile_cols * priv->tile_rows) {
> +        av_log(avctx, AV_LOG_WARNING, "Invalid tile groups number %d, "
> +        "correct to %d.\n", priv->tile_groups, priv->tile_cols * priv->tile_rows);
> +        priv->tile_groups = priv->tile_cols * priv->tile_rows;
> +    }
> +
> +    return 0;
> +}
> +
> +static int vaapi_encode_av1_write_sequence_header(AVCodecContext *avctx,
> +                                                  char *data, size_t *data_len)
> +{
> +    VAAPIEncodeAV1Context *priv = avctx->priv_data;
> +
> +    memcpy(data, &priv->sh_data, MAX_PARAM_BUFFER_SIZE * sizeof(char));
> +    *data_len = priv->sh_data_len;
> +
> +    return 0;
> +}
> +
> +static int vaapi_encode_av1_init_sequence_params(AVCodecContext *avctx)
> +{
> +    VAAPIEncodeContext               *ctx = avctx->priv_data;
> +    VAAPIEncodeAV1Context           *priv = avctx->priv_data;
> +    AV1RawOBU                     *sh_obu = &priv->sh;
> +    AV1RawSequenceHeader              *sh = &sh_obu->obu.sequence_header;
> +    VAEncSequenceParameterBufferAV1 *vseq = ctx->codec_sequence_params;
> +    CodedBitstreamFragment           *obu = &priv->current_obu;
> +    const AVPixFmtDescriptor *desc;
> +    int ret;
> +
> +    memset(sh_obu, 0, sizeof(*sh_obu));
> +    sh_obu->header.obu_type = AV1_OBU_SEQUENCE_HEADER;
> +
> +    desc = av_pix_fmt_desc_get(priv->common.input_frames->sw_format);
> +    av_assert0(desc);
> +
> +    sh->seq_profile  = avctx->profile;
> +    if (!sh->seq_force_screen_content_tools)
> +        sh->seq_force_integer_mv = AV1_SELECT_INTEGER_MV;
> +    sh->frame_width_bits_minus_1  = av_log2(avctx->width);
> +    sh->frame_height_bits_minus_1 = av_log2(avctx->height);
> +    sh->max_frame_width_minus_1   = avctx->width - 1;
> +    sh->max_frame_height_minus_1  = avctx->height - 1;
> +    sh->seq_tier[0]               = priv->tier;
> +    /** enable order hint and reserve maximum 8 bits for it by default. */
> +    sh->enable_order_hint         = 1;
> +    sh->order_hint_bits_minus_1   = 7;
> +
> +    sh->color_config = (AV1RawColorConfig) {
> +        .high_bitdepth                  = desc->comp[0].depth == 8 ? 0 : 1,
> +        .color_primaries                = avctx->color_primaries,
> +        .transfer_characteristics       = avctx->color_trc,
> +        .matrix_coefficients            = avctx->colorspace,
> +        .color_description_present_flag = (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
> +                                           avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
> +                                           avctx->colorspace      != AVCOL_SPC_UNSPECIFIED),
> +        .color_range                    = avctx->color_range == AVCOL_RANGE_JPEG,
> +        .subsampling_x                  = desc->log2_chroma_w,
> +        .subsampling_y                  = desc->log2_chroma_h,
> +    };
> +
> +    switch (avctx->chroma_sample_location) {
> +        case AVCHROMA_LOC_LEFT:
> +            sh->color_config.chroma_sample_position = AV1_CSP_VERTICAL;
> +            break;
> +        case AVCHROMA_LOC_TOPLEFT:
> +            sh->color_config.chroma_sample_position = AV1_CSP_COLOCATED;
> +            break;
> +        default:
> +            sh->color_config.chroma_sample_position = AV1_CSP_UNKNOWN;
> +            break;
> +    }
> +
> +    if (avctx->level != AV_LEVEL_UNKNOWN) {
> +        sh->seq_level_idx[0] = avctx->level;
> +    } else {
> +        const AV1LevelDescriptor *level;
> +        float framerate;
> +
> +        if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
> +            framerate = avctx->framerate.num / avctx->framerate.den;
> +        else
> +            framerate = 0;
> +
> +        level = ff_av1_guess_level(avctx->bit_rate, priv->tier,
> +                                   ctx->surface_width, ctx->surface_height,
> +                                   priv->tile_rows * priv->tile_cols,
> +                                   priv->tile_cols, framerate);
> +        if (level) {
> +            av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
> +            sh->seq_level_idx[0] = level->level_idx;
> +        } else {
> +            av_log(avctx, AV_LOG_VERBOSE, "Stream will not conform to "
> +                   "any normal level, using maximum parameters level by default.\n");
> +            sh->seq_level_idx[0] = 31;
> +            sh->seq_tier[0] = 1;
> +        }
> +    }
> +    vseq->seq_profile             = sh->seq_profile;
> +    vseq->seq_level_idx           = sh->seq_level_idx[0];
> +    vseq->seq_tier                = sh->seq_tier[0];
> +    vseq->order_hint_bits_minus_1 = sh->order_hint_bits_minus_1;
> +    vseq->intra_period            = ctx->gop_size;
> +    vseq->ip_period               = ctx->b_per_p + 1;
> +
> +    vseq->seq_fields.bits.enable_order_hint = sh->enable_order_hint;
> +
> +    if (!(ctx->va_rc_mode & VA_RC_CQP)) {
> +        vseq->bits_per_second = ctx->va_bit_rate;
> +        vseq->seq_fields.bits.enable_cdef = sh->enable_cdef = 1;
> +    }
> +
> +    ret = vaapi_encode_av1_add_obu(avctx, obu, AV1_OBU_SEQUENCE_HEADER, &priv->sh);
> +    if (ret < 0)
> +        goto end;
> +
> +    ret = vaapi_encode_av1_write_obu(avctx, priv->sh_data, &priv->sh_data_len, obu);
> +    if (ret < 0)
> +        goto end;
> +
> +end:
> +    ff_cbs_fragment_reset(obu);
> +    return ret;
> +}
> +
> +static int vaapi_encode_av1_init_picture_params(AVCodecContext *avctx,
> +                                                VAAPIEncodePicture *pic)
> +{
> +    VAAPIEncodeContext              *ctx = avctx->priv_data;
> +    VAAPIEncodeAV1Context          *priv = avctx->priv_data;
> +    VAAPIEncodeAV1Picture          *hpic = pic->priv_data;
> +    AV1RawOBU                    *fh_obu = &priv->fh;
> +    AV1RawFrameHeader                *fh = &fh_obu->obu.frame.header;
> +    VAEncPictureParameterBufferAV1 *vpic = pic->codec_picture_params;
> +    CodedBitstreamFragment          *obu = &priv->current_obu;
> +    VAAPIEncodePicture    *ref;
> +    VAAPIEncodeAV1Picture *href;
> +    int slot, i;
> +    int ret;
> +    static const int8_t default_loop_filter_ref_deltas[AV1_TOTAL_REFS_PER_FRAME] =
> +        { 1, 0, 0, 0, -1, 0, -1, -1 };
> +
> +    memset(fh_obu, 0, sizeof(*fh_obu));
> +    pic->nb_slices = priv->tile_groups;
> +    pic->non_independent_frame = pic->encode_order < pic->display_order;
> +    fh_obu->header.obu_type = AV1_OBU_FRAME_HEADER;
> +    fh_obu->header.obu_has_size_field = 1;
> +
> +    switch (pic->type) {
> +    case PICTURE_TYPE_IDR:
> +        av_assert0(pic->nb_refs[0] == 0 || pic->nb_refs[1]);
> +        fh->frame_type = AV1_FRAME_KEY;
> +        fh->refresh_frame_flags = 0xFF;
> +        fh->base_q_idx = priv->q_idx_idr;
> +        hpic->slot = 0;
> +        hpic->last_idr_frame = pic->display_order;
> +        break;
> +    case PICTURE_TYPE_P:
> +        av_assert0(pic->nb_refs[0]);
> +        fh->frame_type = AV1_FRAME_INTER;
> +        fh->base_q_idx = priv->q_idx_p;
> +        ref = pic->refs[0][pic->nb_refs[0] - 1];
> +        href = ref->priv_data;
> +        hpic->slot = !href->slot;
> +        hpic->last_idr_frame = href->last_idr_frame;
> +        fh->refresh_frame_flags = 1 << hpic->slot;
> +
> +        /** set the nearest frame in L0 as all reference frame. */
> +        for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
> +            fh->ref_frame_idx[i] = href->slot;
> +        }
> +        fh->primary_ref_frame = href->slot;
> +        fh->ref_order_hint[href->slot] = ref->display_order - href->last_idr_frame;
> +        vpic->ref_frame_ctrl_l0.fields.search_idx0 = AV1_REF_FRAME_LAST;
> +
> +        /** set the 2nd nearest frame in L0 as Golden frame. */
> +        if (pic->nb_refs[0] > 1) {
> +            ref = pic->refs[0][pic->nb_refs[0] - 2];
> +            href = ref->priv_data;
> +            fh->ref_frame_idx[3] = href->slot;
> +            fh->ref_order_hint[href->slot] = ref->display_order - href->last_idr_frame;
> +            vpic->ref_frame_ctrl_l0.fields.search_idx1 = AV1_REF_FRAME_GOLDEN;
> +        }
> +        break;
> +    case PICTURE_TYPE_B:
> +        av_assert0(pic->nb_refs[0] && pic->nb_refs[1]);
> +        fh->frame_type = AV1_FRAME_INTER;
> +        fh->base_q_idx = priv->q_idx_b;
> +        fh->refresh_frame_flags = 0x0;
> +        fh->reference_select = 1;
> +
> +        /** B frame will not be referenced, disable its recon frame. */
> +        vpic->picture_flags.bits.disable_frame_recon = 1;
> +
> +        /** Use LAST_FRAME and BWDREF_FRAME for reference. */
> +        vpic->ref_frame_ctrl_l0.fields.search_idx0 = AV1_REF_FRAME_LAST;
> +        vpic->ref_frame_ctrl_l1.fields.search_idx0 = AV1_REF_FRAME_BWDREF;
> +
> +        ref                            = pic->refs[0][pic->nb_refs[0] - 1];
> +        href                           = ref->priv_data;
> +        hpic->last_idr_frame           = href->last_idr_frame;
> +        fh->primary_ref_frame          = href->slot;
> +        fh->ref_order_hint[href->slot] = ref->display_order - href->last_idr_frame;
> +        for (i = 0; i < AV1_REF_FRAME_GOLDEN; i++) {
> +            fh->ref_frame_idx[i] = href->slot;
> +        }
> +
> +        ref                            = pic->refs[1][pic->nb_refs[1] - 1];
> +        href                           = ref->priv_data;
> +        fh->ref_order_hint[href->slot] = ref->display_order - href->last_idr_frame;
> +        for (i = AV1_REF_FRAME_GOLDEN; i < AV1_REFS_PER_FRAME; i++) {
> +            fh->ref_frame_idx[i] = href->slot;
> +        }
> +        break;
> +    default:
> +        av_assert0(0 && "invalid picture type");
> +    }
> +
> +    fh->show_frame                = pic->display_order <= pic->encode_order;
> +    fh->showable_frame            = fh->frame_type != AV1_FRAME_KEY;
> +    fh->frame_width_minus_1       = avctx->width - 1;
> +    fh->frame_height_minus_1      = avctx->height - 1;
> +    fh->render_width_minus_1      = fh->frame_width_minus_1;
> +    fh->render_height_minus_1     = fh->frame_height_minus_1;
> +    fh->order_hint                = pic->display_order - hpic->last_idr_frame;
> +    fh->tile_cols                 = priv->tile_cols;
> +    fh->tile_rows                 = priv->tile_rows;
> +    fh->tile_cols_log2            = priv->tile_cols_log2;
> +    fh->tile_rows_log2            = priv->tile_rows_log2;
> +    fh->uniform_tile_spacing_flag = priv->uniform_tile;
> +    fh->tile_size_bytes_minus1    = priv->attr_ext2.bits.tile_size_bytes_minus1;
> +
> +    /** ignore ONLY_4x4 mode for codedlossless is not fully implemented. */
> +    if (priv->attr_ext2.bits.tx_mode_support & 0x04)
> +        fh->tx_mode = AV1_TX_MODE_SELECT;
> +    else if (priv->attr_ext2.bits.tx_mode_support & 0x02)
> +        fh->tx_mode = AV1_TX_MODE_LARGEST;
> +    else {
> +        av_log(avctx, AV_LOG_ERROR, "No available tx mode found.\n");
> +        return AVERROR(EINVAL);
> +    }
> +
> +    for (i = 0; i < fh->tile_cols; i++)
> +        fh->width_in_sbs_minus_1[i] = vpic->width_in_sbs_minus_1[i] = priv->width_in_sbs_minus_1[i];
> +
> +    for (i = 0; i < fh->tile_rows; i++)
> +        fh->height_in_sbs_minus_1[i] = vpic->height_in_sbs_minus_1[i] = priv->height_in_sbs_minus_1[i];
> +
> +    memcpy(fh->loop_filter_ref_deltas, default_loop_filter_ref_deltas,
> +           AV1_TOTAL_REFS_PER_FRAME * sizeof(int8_t));
> +
> +    if (fh->frame_type == AV1_FRAME_KEY && fh->show_frame) {
> +        fh->error_resilient_mode = 1;
> +    }
> +
> +    if (fh->frame_type == AV1_FRAME_KEY || fh->error_resilient_mode)
> +        fh->primary_ref_frame = AV1_PRIMARY_REF_NONE;
> +
> +    vpic->base_qindex          = fh->base_q_idx;
> +    vpic->frame_width_minus_1  = fh->frame_width_minus_1;
> +    vpic->frame_height_minus_1 = fh->frame_height_minus_1;
> +    vpic->primary_ref_frame    = fh->primary_ref_frame;
> +    vpic->reconstructed_frame  = pic->recon_surface;
> +    vpic->coded_buf            = pic->output_buffer;
> +    vpic->tile_cols            = fh->tile_cols;
> +    vpic->tile_rows            = fh->tile_rows;
> +    vpic->order_hint           = fh->order_hint;
> +#if VA_CHECK_VERSION(1, 15, 0)
> +    vpic->refresh_frame_flags  = fh->refresh_frame_flags;
> +#endif
> +
> +    vpic->picture_flags.bits.enable_frame_obu     = 0;
> +    vpic->picture_flags.bits.frame_type           = fh->frame_type;
> +    vpic->picture_flags.bits.reduced_tx_set       = fh->reduced_tx_set;
> +    vpic->picture_flags.bits.error_resilient_mode = fh->error_resilient_mode;
> +
> +    /** let driver decide to use single or compound reference prediction mode. */
> +    vpic->mode_control_flags.bits.reference_mode = fh->reference_select ? 2 : 0;
> +    vpic->mode_control_flags.bits.tx_mode = fh->tx_mode;
> +
> +    vpic->tile_group_obu_hdr_info.bits.obu_has_size_field = 1;
> +
> +    /** set reference. */
> +    for (i = 0; i < AV1_REFS_PER_FRAME; i++)
> +        vpic->ref_frame_idx[i] = fh->ref_frame_idx[i];
> +
> +    for (i = 0; i < FF_ARRAY_ELEMS(vpic->reference_frames); i++)
> +        vpic->reference_frames[i] = VA_INVALID_SURFACE;
> +
> +    for (i = 0; i < MAX_REFERENCE_LIST_NUM; i++) {
> +        for (int j = 0; j < pic->nb_refs[i]; j++) {
> +            VAAPIEncodePicture *ref_pic = pic->refs[i][j];
> +
> +            slot = ((VAAPIEncodeAV1Picture*)ref_pic->priv_data)->slot;
> +            av_assert0(vpic->reference_frames[slot] == VA_INVALID_SURFACE);
> +
> +            vpic->reference_frames[slot] = ref_pic->recon_surface;
> +        }
> +    }
> +
> +    fh_obu->obu_size_byte_len = priv->attr_ext2.bits.obu_size_bytes_minus1 + 1;
> +    ret = vaapi_encode_av1_add_obu(avctx, obu, AV1_OBU_FRAME_HEADER, &priv->fh);
> +    if (ret < 0)
> +        goto end;
> +
> +    ret = vaapi_encode_av1_write_obu(avctx, priv->fh_data, &priv->fh_data_len, obu);
> +    if (ret < 0)
> +        goto end;
> +
> +    if (!(ctx->va_rc_mode & VA_RC_CQP)) {
> +        vpic->min_base_qindex = av_clip(avctx->qmin, 1, AV1_MAX_QUANT);
> +        vpic->max_base_qindex = av_clip(avctx->qmax, 1, AV1_MAX_QUANT);
> +
> +        vpic->bit_offset_qindex              = priv->qindex_offset;
> +        vpic->bit_offset_loopfilter_params   = priv->loopfilter_offset;
> +        vpic->bit_offset_cdef_params         = priv->cdef_start_offset;
> +        vpic->size_in_bits_cdef_params       = priv->cdef_param_size;
> +        vpic->size_in_bits_frame_hdr_obu     = priv->fh_data_len;
> +        vpic->byte_offset_frame_hdr_obu_size = (((pic->type == PICTURE_TYPE_IDR) ?
> +                                               priv->sh_data_len / 8 : 0) +
> +                                               (fh_obu->header.obu_extension_flag ?
> +                                               2 : 1));
> +    }
> +
> +end:
> +    ff_cbs_fragment_reset(obu);
> +    return ret;
> +}
> +
> +static int vaapi_encode_av1_init_slice_params(AVCodecContext *avctx,
> +                                              VAAPIEncodePicture *pic,
> +                                              VAAPIEncodeSlice *slice)
> +{
> +    VAAPIEncodeAV1Context      *priv = avctx->priv_data;
> +    VAEncTileGroupBufferAV1  *vslice = slice->codec_slice_params;
> +    CodedBitstreamAV1Context  *cbctx = priv->cbc->priv_data;
> +    int div;
> +
> +    /** Set tile group info. */
> +    div = priv->tile_cols * priv->tile_rows / priv->tile_groups;
> +    vslice->tg_start = slice->index * div;
> +    if (slice->index == (priv->tile_groups - 1)) {
> +        vslice->tg_end = priv->tile_cols * priv->tile_rows - 1;
> +        cbctx->seen_frame_header = 0;
> +    } else {
> +        vslice->tg_end = (slice->index + 1) * div - 1;
> +    }
> +
> +    return 0;
> +}
> +
> +static int vaapi_encode_av1_write_picture_header(AVCodecContext *avctx,
> +                                                 VAAPIEncodePicture *pic,
> +                                                 char *data, size_t *data_len)
> +{
> +    VAAPIEncodeAV1Context     *priv = avctx->priv_data;
> +    CodedBitstreamFragment     *obu = &priv->current_obu;
> +    CodedBitstreamAV1Context *cbctx = priv->cbc->priv_data;
> +    AV1RawOBU               *fh_obu = &priv->fh;
> +    AV1RawFrameHeader       *rep_fh = &fh_obu->obu.frame_header;
> +    VAAPIEncodeAV1Picture *href;
> +    int ret = 0;
> +
> +    pic->tail_size = 0;
> +    /** Pack repeat frame header. */
> +    if (pic->display_order > pic->encode_order) {
> +        memset(fh_obu, 0, sizeof(*fh_obu));
> +        href = pic->refs[0][pic->nb_refs[0] - 1]->priv_data;
> +        fh_obu->header.obu_type = AV1_OBU_FRAME_HEADER;
> +        fh_obu->header.obu_has_size_field = 1;
> +
> +        rep_fh->show_existing_frame   = 1;
> +        rep_fh->frame_to_show_map_idx = href->slot == 0;
> +        rep_fh->frame_type            = AV1_FRAME_INTER;
> +        rep_fh->frame_width_minus_1   = avctx->width - 1;
> +        rep_fh->frame_height_minus_1  = avctx->height - 1;
> +        rep_fh->render_width_minus_1  = rep_fh->frame_width_minus_1;
> +        rep_fh->render_height_minus_1 = rep_fh->frame_height_minus_1;
> +
> +        cbctx->seen_frame_header = 0;
> +
> +        ret = vaapi_encode_av1_add_obu(avctx, obu, AV1_OBU_FRAME_HEADER, &priv->fh);
> +        if (ret < 0)
> +            goto end;
> +
> +        ret = vaapi_encode_av1_write_obu(avctx, pic->tail_data, &pic->tail_size, obu);
> +        if (ret < 0)
> +            goto end;
> +
> +        pic->tail_size /= 8;
> +    }
> +
> +    memcpy(data, &priv->fh_data, MAX_PARAM_BUFFER_SIZE * sizeof(char));
> +    *data_len = priv->fh_data_len;
> +
> +end:
> +    ff_cbs_fragment_reset(obu);
> +    return ret;
> +}
> +
> +static const VAAPIEncodeProfile vaapi_encode_av1_profiles[] = {
> +    { AV_PROFILE_AV1_MAIN,  8, 3, 1, 1, VAProfileAV1Profile0 },
> +    { AV_PROFILE_AV1_MAIN, 10, 3, 1, 1, VAProfileAV1Profile0 },
> +    { AV_PROFILE_UNKNOWN }
> +};
> +
> +static const VAAPIEncodeType vaapi_encode_type_av1 = {
> +    .profiles        = vaapi_encode_av1_profiles,
> +    .flags           = FLAG_B_PICTURES | FLAG_TIMESTAMP_NO_DELAY,
> +    .default_quality = 25,
> +
> +    .get_encoder_caps = &vaapi_encode_av1_get_encoder_caps,
> +    .configure        = &vaapi_encode_av1_configure,
> +
> +    .sequence_header_type  = VAEncPackedHeaderSequence,
> +    .sequence_params_size  = sizeof(VAEncSequenceParameterBufferAV1),
> +    .init_sequence_params  = &vaapi_encode_av1_init_sequence_params,
> +    .write_sequence_header = &vaapi_encode_av1_write_sequence_header,
> +
> +    .picture_priv_data_size = sizeof(VAAPIEncodeAV1Picture),
> +    .picture_header_type    = VAEncPackedHeaderPicture,
> +    .picture_params_size    = sizeof(VAEncPictureParameterBufferAV1),
> +    .init_picture_params    = &vaapi_encode_av1_init_picture_params,
> +    .write_picture_header   = &vaapi_encode_av1_write_picture_header,
> +
> +    .slice_params_size = sizeof(VAEncTileGroupBufferAV1),
> +    .init_slice_params = &vaapi_encode_av1_init_slice_params,
> +};
> +
> +static av_cold int vaapi_encode_av1_init(AVCodecContext *avctx)
> +{
> +    VAAPIEncodeContext      *ctx = avctx->priv_data;
> +    VAAPIEncodeAV1Context  *priv = avctx->priv_data;
> +    VAConfigAttrib attr;
> +    VAStatus vas;
> +    int ret;
> +
> +    ctx->codec = &vaapi_encode_type_av1;
> +
> +    ctx->desired_packed_headers =
> +        VA_ENC_PACKED_HEADER_SEQUENCE |
> +        VA_ENC_PACKED_HEADER_PICTURE;
> +
> +    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 & ~0x1f) {
> +        av_log(avctx, AV_LOG_ERROR, "Invalid level %d\n", avctx->level);
> +        return AVERROR(EINVAL);
> +    }
> +
> +    ret = ff_vaapi_encode_init(avctx);
> +    if (ret < 0)
> +        return ret;
> +
> +    attr.type = VAConfigAttribEncAV1;
> +    vas = vaGetConfigAttributes(ctx->hwctx->display,
> +                                ctx->va_profile,
> +                                ctx->va_entrypoint,
> +                                &attr, 1);
> +    if (vas != VA_STATUS_SUCCESS) {
> +        av_log(avctx, AV_LOG_ERROR, "Failed to query "
> +               "config attribute: %d (%s).\n", vas, vaErrorStr(vas));
> +        return AVERROR_EXTERNAL;
> +    } else if (attr.value == VA_ATTRIB_NOT_SUPPORTED) {
> +        priv->attr.value = 0;
> +        av_log(avctx, AV_LOG_WARNING, "Attribute type:%d is not "
> +               "supported.\n", attr.type);
> +    } else {
> +        priv->attr.value = attr.value;
> +    }
> +
> +    attr.type = VAConfigAttribEncAV1Ext1;
> +    vas = vaGetConfigAttributes(ctx->hwctx->display,
> +                                ctx->va_profile,
> +                                ctx->va_entrypoint,
> +                                &attr, 1);
> +    if (vas != VA_STATUS_SUCCESS) {
> +        av_log(avctx, AV_LOG_ERROR, "Failed to query "
> +               "config attribute: %d (%s).\n", vas, vaErrorStr(vas));
> +        return AVERROR_EXTERNAL;
> +    } else if (attr.value == VA_ATTRIB_NOT_SUPPORTED) {
> +        priv->attr_ext1.value = 0;
> +        av_log(avctx, AV_LOG_WARNING, "Attribute type:%d is not "
> +               "supported.\n", attr.type);
> +    } else {
> +        priv->attr_ext1.value = attr.value;
> +    }
> +
> +    /** This attr provides essential indicators, return error if not support. */
> +    attr.type = VAConfigAttribEncAV1Ext2;
> +    vas = vaGetConfigAttributes(ctx->hwctx->display,
> +                                ctx->va_profile,
> +                                ctx->va_entrypoint,
> +                                &attr, 1);
> +    if (vas != VA_STATUS_SUCCESS || attr.value == VA_ATTRIB_NOT_SUPPORTED) {
> +        av_log(avctx, AV_LOG_ERROR, "Failed to query "
> +               "config attribute: %d (%s).\n", vas, vaErrorStr(vas));
> +        return AVERROR_EXTERNAL;
> +    } else {
> +        priv->attr_ext2.value = attr.value;
> +    }
> +
> +    ret = vaapi_encode_av1_set_tile(avctx);
> +    if (ret < 0)
> +        return ret;
> +
> +    return 0;
> +}
> +
> +static av_cold int vaapi_encode_av1_close(AVCodecContext *avctx)
> +{
> +    VAAPIEncodeAV1Context *priv = avctx->priv_data;
> +
> +    ff_cbs_fragment_free(&priv->current_obu);
> +    ff_cbs_close(&priv->cbc);
> +
> +    return ff_vaapi_encode_close(avctx);
> +}
> +
> +#define OFFSET(x) offsetof(VAAPIEncodeAV1Context, x)
> +#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
> +
> +static const AVOption vaapi_encode_av1_options[] = {
> +    VAAPI_ENCODE_COMMON_OPTIONS,
> +    VAAPI_ENCODE_RC_OPTIONS,
> +    { "profile", "Set profile (seq_profile)",
> +      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_AV1_MAIN) },
> +    { PROFILE("high",               AV_PROFILE_AV1_HIGH) },
> +    { PROFILE("professional",       AV_PROFILE_AV1_PROFESSIONAL) },
> +#undef PROFILE
> +
> +    { "tier", "Set tier (seq_tier)",
> +      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 (seq_level_idx)",
> +      OFFSET(level), AV_OPT_TYPE_INT,
> +      { .i64 = AV_LEVEL_UNKNOWN }, AV_LEVEL_UNKNOWN, 0x1f, FLAGS, "level" },
> +
> +#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
> +      { .i64 = value }, 0, 0, FLAGS, "level"
> +    { LEVEL("2.0",  0) },
> +    { LEVEL("2.1",  1) },
> +    { LEVEL("3.0",  4) },
> +    { LEVEL("3.1",  5) },
> +    { LEVEL("4.0",  8) },
> +    { LEVEL("4.1",  9) },
> +    { LEVEL("5.0", 12) },
> +    { LEVEL("5.1", 13) },
> +    { LEVEL("5.2", 14) },
> +    { LEVEL("5.3", 15) },
> +    { LEVEL("6.0", 16) },
> +    { LEVEL("6.1", 17) },
> +    { LEVEL("6.2", 18) },
> +    { LEVEL("6.3", 19) },
> +#undef LEVEL
> +
> +    { "tiles", "Tile columns x rows (Use minimal tile column/row number automatically by default)",
> +      OFFSET(tile_cols), AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, FLAGS },
> +    { "tile_groups", "Number of tile groups for encoding",
> +      OFFSET(tile_groups), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, AV1_MAX_TILE_ROWS * AV1_MAX_TILE_COLS, FLAGS },
> +
> +    { NULL },
> +};
> +
> +static const FFCodecDefault vaapi_encode_av1_defaults[] = {
> +    { "b",              "0"   },
> +    { "bf",             "2"   },
> +    { "g",              "120" },
> +    { "qmin",           "1"   },
> +    { "qmax",           "255" },
> +    { NULL },
> +};
> +
> +static const AVClass vaapi_encode_av1_class = {
> +    .class_name = "av1_vaapi",
> +    .item_name  = av_default_item_name,
> +    .option     = vaapi_encode_av1_options,
> +    .version    = LIBAVUTIL_VERSION_INT,
> +};
> +
> +const FFCodec ff_av1_vaapi_encoder = {
> +    .p.name         = "av1_vaapi",
> +    CODEC_LONG_NAME("AV1 (VAAPI)"),
> +    .p.type         = AVMEDIA_TYPE_VIDEO,
> +    .p.id           = AV_CODEC_ID_AV1,
> +    .priv_data_size = sizeof(VAAPIEncodeAV1Context),
> +    .init           = &vaapi_encode_av1_init,
> +    FF_CODEC_RECEIVE_PACKET_CB(&ff_vaapi_encode_receive_packet),
> +    .close          = &vaapi_encode_av1_close,
> +    .p.priv_class   = &vaapi_encode_av1_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       = vaapi_encode_av1_defaults,
> +    .p.pix_fmts = (const enum AVPixelFormat[]) {
> +        AV_PIX_FMT_VAAPI,
> +        AV_PIX_FMT_NONE,
> +    },
> +    .hw_configs     = ff_vaapi_encode_hw_configs,
> +    .p.wrapper_name = "vaapi",
> +};
> diff --git a/libavcodec/version.h b/libavcodec/version.h
> index 26ee41eb1f..735c8b813c 100644
> --- a/libavcodec/version.h
> +++ b/libavcodec/version.h
> @@ -29,7 +29,7 @@
>
>  #include "version_major.h"
>
> -#define LIBAVCODEC_VERSION_MINOR  26
> +#define LIBAVCODEC_VERSION_MINOR  27
>  #define LIBAVCODEC_VERSION_MICRO 100
>
>  #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
> --
> 2.25.1
>

The code looks reasonable to me, but I lack hardware to exercise this
functionality.

Acked-by: Neal Gompa <ngompa13@gmail.com>