libavcodec/dxva2_av1.c - play-games/ffmpeg - Git at Google


            
            /*

            
             * DXVA2 AV1 HW acceleration.

            
             *

            
             * copyright (c) 2020 Hendrik Leppkes

            
             *

            
             * 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 "config_components.h"


            #include "libavutil/avassert.h"

            
            #include "libavutil/pixdesc.h"


            #include "dxva2_internal.h"

            
            #include "av1dec.h"

            
            #include "hwaccel_internal.h"


            #define MAX_TILES 256


            struct AV1DXVAContext {

            
                FFDXVASharedContext shared;


                unsigned int bitstream_allocated;

            
                uint8_t *bitstream_cache;

            
            };


            struct av1_dxva2_picture_context {

            
                DXVA_PicParams_AV1    pp;

            
                unsigned              tile_count;

            
                DXVA_Tile_AV1         tiles[MAX_TILES];

            
                uint8_t              *bitstream;

            
                unsigned              bitstream_size;

            
            };


            static int get_bit_depth_from_seq(const AV1RawSequenceHeader *seq)

            
            {

            
                if (seq->seq_profile == 2 && seq->color_config.high_bitdepth)

            
                    return seq->color_config.twelve_bit ? 12 : 10;

            
                else if (seq->seq_profile <= 2 && seq->color_config.high_bitdepth)

            
                    return 10;

            
                else

            
                    return 8;

            
            }


            int ff_dxva2_av1_fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx,

            
                                                DXVA_PicParams_AV1 *pp)

            
            {

            
                int i,j, uses_lr;

            
                const AV1DecContext *h = avctx->priv_data;

            
                const AV1RawSequenceHeader *seq = h->raw_seq;

            
                const AV1RawFrameHeader *frame_header = h->raw_frame_header;

            
                const AV1RawFilmGrainParams *film_grain = &h->cur_frame.film_grain;


                unsigned char remap_lr_type[4] = { AV1_RESTORE_NONE, AV1_RESTORE_SWITCHABLE, AV1_RESTORE_WIENER, AV1_RESTORE_SGRPROJ };

            
                int apply_grain = !(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN) && film_grain->apply_grain;


                memset(pp, 0, sizeof(*pp));


                pp->width  = avctx->width;

            
                pp->height = avctx->height;


                pp->max_width  = seq->max_frame_width_minus_1 + 1;

            
                pp->max_height = seq->max_frame_height_minus_1 + 1;


                pp->superres_denom      = frame_header->use_superres ? frame_header->coded_denom + AV1_SUPERRES_DENOM_MIN : AV1_SUPERRES_NUM;

            
                pp->bitdepth            = get_bit_depth_from_seq(seq);

            
                pp->seq_profile         = seq->seq_profile;


                /* Tiling info */

            
                pp->tiles.cols = frame_header->tile_cols;

            
                pp->tiles.rows = frame_header->tile_rows;

            
                pp->tiles.context_update_id = frame_header->context_update_tile_id;


                for (i = 0; i < pp->tiles.cols; i++)

            
                    pp->tiles.widths[i] = frame_header->width_in_sbs_minus_1[i] + 1;


                for (i = 0; i < pp->tiles.rows; i++)

            
                    pp->tiles.heights[i] = frame_header->height_in_sbs_minus_1[i] + 1;


                /* Coding tools */

            
                pp->coding.use_128x128_superblock       = seq->use_128x128_superblock;

            
                pp->coding.intra_edge_filter            = seq->enable_intra_edge_filter;

            
                pp->coding.interintra_compound          = seq->enable_interintra_compound;

            
                pp->coding.masked_compound              = seq->enable_masked_compound;

            
                pp->coding.warped_motion                = frame_header->allow_warped_motion;

            
                pp->coding.dual_filter                  = seq->enable_dual_filter;

            
                pp->coding.jnt_comp                     = seq->enable_jnt_comp;

            
                pp->coding.screen_content_tools         = frame_header->allow_screen_content_tools;

            
                pp->coding.integer_mv                   = frame_header->force_integer_mv || !(frame_header->frame_type & 1);

            
                pp->coding.cdef                         = seq->enable_cdef;

            
                pp->coding.restoration                  = seq->enable_restoration;

            
                pp->coding.film_grain                   = seq->film_grain_params_present && !(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN);

            
                pp->coding.intrabc                      = frame_header->allow_intrabc;

            
                pp->coding.high_precision_mv            = frame_header->allow_high_precision_mv;

            
                pp->coding.switchable_motion_mode       = frame_header->is_motion_mode_switchable;

            
                pp->coding.filter_intra                 = seq->enable_filter_intra;

            
                pp->coding.disable_frame_end_update_cdf = frame_header->disable_frame_end_update_cdf;

            
                pp->coding.disable_cdf_update           = frame_header->disable_cdf_update;

            
                pp->coding.reference_mode               = frame_header->reference_select;

            
                pp->coding.skip_mode                    = frame_header->skip_mode_present;

            
                pp->coding.reduced_tx_set               = frame_header->reduced_tx_set;

            
                pp->coding.superres                     = frame_header->use_superres;

            
                pp->coding.tx_mode                      = frame_header->tx_mode;

            
                pp->coding.use_ref_frame_mvs            = frame_header->use_ref_frame_mvs;

            
                pp->coding.enable_ref_frame_mvs         = seq->enable_ref_frame_mvs;

            
                pp->coding.reference_frame_update       = 1; // 0 for show_existing_frame with key frames, but those are not passed to the hwaccel


                /* Format & Picture Info flags */

            
                pp->format.frame_type     = frame_header->frame_type;

            
                pp->format.show_frame     = frame_header->show_frame;

            
                pp->format.showable_frame = frame_header->showable_frame;

            
                pp->format.subsampling_x  = seq->color_config.subsampling_x;

            
                pp->format.subsampling_y  = seq->color_config.subsampling_y;

            
                pp->format.mono_chrome    = seq->color_config.mono_chrome;


                /* References */

            
                pp->primary_ref_frame = frame_header->primary_ref_frame;

            
                pp->order_hint        = frame_header->order_hint;

            
                pp->order_hint_bits   = seq->enable_order_hint ? seq->order_hint_bits_minus_1 + 1 : 0;


                memset(pp->RefFrameMapTextureIndex, 0xFF, sizeof(pp->RefFrameMapTextureIndex));

            
                for (i = 0; i < AV1_REFS_PER_FRAME; i++) {

            
                    int8_t ref_idx = frame_header->ref_frame_idx[i];

            
                    AVFrame *ref_frame = h->ref[ref_idx].f;


                    pp->frame_refs[i].width  = ref_frame->width;

            
                    pp->frame_refs[i].height = ref_frame->height;

            
                    pp->frame_refs[i].Index  = ref_frame->buf[0] ? ref_idx : 0xFF;


                    /* Global Motion */

            
                    pp->frame_refs[i].wminvalid = h->cur_frame.gm_invalid[AV1_REF_FRAME_LAST + i];

            
                    pp->frame_refs[i].wmtype    = h->cur_frame.gm_type[AV1_REF_FRAME_LAST + i];

            
                    for (j = 0; j < 6; ++j) {

            
                         pp->frame_refs[i].wmmat[j] = h->cur_frame.gm_params[AV1_REF_FRAME_LAST + i][j];

            
                    }

            
                }

            
                for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {

            
                    AVFrame *ref_frame = h->ref[i].f;

            
                    if (ref_frame->buf[0])

            
                        pp->RefFrameMapTextureIndex[i] = ff_dxva2_get_surface_index(avctx, ctx, ref_frame, 0);

            
                }


                pp->CurrPicTextureIndex = ff_dxva2_get_surface_index(avctx, ctx, h->cur_frame.f, 1);


                /* Loop filter parameters */

            
                pp->loop_filter.filter_level[0]        = frame_header->loop_filter_level[0];

            
                pp->loop_filter.filter_level[1]        = frame_header->loop_filter_level[1];

            
                pp->loop_filter.filter_level_u         = frame_header->loop_filter_level[2];

            
                pp->loop_filter.filter_level_v         = frame_header->loop_filter_level[3];

            
                pp->loop_filter.sharpness_level        = frame_header->loop_filter_sharpness;

            
                pp->loop_filter.mode_ref_delta_enabled = frame_header->loop_filter_delta_enabled;

            
                pp->loop_filter.mode_ref_delta_update  = frame_header->loop_filter_delta_update;

            
                pp->loop_filter.delta_lf_multi         = frame_header->delta_lf_multi;

            
                pp->loop_filter.delta_lf_present       = frame_header->delta_lf_present;

            
                pp->loop_filter.delta_lf_res           = frame_header->delta_lf_res;


                for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++) {

            
                    pp->loop_filter.ref_deltas[i] = frame_header->loop_filter_ref_deltas[i];

            
                }


                pp->loop_filter.mode_deltas[0]                = frame_header->loop_filter_mode_deltas[0];

            
                pp->loop_filter.mode_deltas[1]                = frame_header->loop_filter_mode_deltas[1];

            
                pp->loop_filter.frame_restoration_type[0]     = remap_lr_type[frame_header->lr_type[0]];

            
                pp->loop_filter.frame_restoration_type[1]     = remap_lr_type[frame_header->lr_type[1]];

            
                pp->loop_filter.frame_restoration_type[2]     = remap_lr_type[frame_header->lr_type[2]];

            
                uses_lr = frame_header->lr_type[0] || frame_header->lr_type[1] || frame_header->lr_type[2];

            
                pp->loop_filter.log2_restoration_unit_size[0] = uses_lr ? (6 + frame_header->lr_unit_shift) : 8;

            
                pp->loop_filter.log2_restoration_unit_size[1] = uses_lr ? (6 + frame_header->lr_unit_shift - frame_header->lr_uv_shift) : 8;

            
                pp->loop_filter.log2_restoration_unit_size[2] = uses_lr ? (6 + frame_header->lr_unit_shift - frame_header->lr_uv_shift) : 8;


                /* Quantization */

            
                pp->quantization.delta_q_present = frame_header->delta_q_present;

            
                pp->quantization.delta_q_res     = frame_header->delta_q_res;

            
                pp->quantization.base_qindex     = frame_header->base_q_idx;

            
                pp->quantization.y_dc_delta_q    = frame_header->delta_q_y_dc;

            
                pp->quantization.u_dc_delta_q    = frame_header->delta_q_u_dc;

            
                pp->quantization.v_dc_delta_q    = frame_header->delta_q_v_dc;

            
                pp->quantization.u_ac_delta_q    = frame_header->delta_q_u_ac;

            
                pp->quantization.v_ac_delta_q    = frame_header->delta_q_v_ac;

            
                pp->quantization.qm_y            = frame_header->using_qmatrix ? frame_header->qm_y : 0xFF;

            
                pp->quantization.qm_u            = frame_header->using_qmatrix ? frame_header->qm_u : 0xFF;

            
                pp->quantization.qm_v            = frame_header->using_qmatrix ? frame_header->qm_v : 0xFF;


                /* Cdef parameters */

            
                pp->cdef.damping = frame_header->cdef_damping_minus_3;

            
                pp->cdef.bits    = frame_header->cdef_bits;

            
                for (i = 0; i < 8; i++) {

            
                    pp->cdef.y_strengths[i].primary    = frame_header->cdef_y_pri_strength[i];

            
                    pp->cdef.y_strengths[i].secondary  = frame_header->cdef_y_sec_strength[i];

            
                    pp->cdef.uv_strengths[i].primary   = frame_header->cdef_uv_pri_strength[i];

            
                    pp->cdef.uv_strengths[i].secondary = frame_header->cdef_uv_sec_strength[i];

            
                }


                /* Misc flags */

            
                pp->interp_filter = frame_header->interpolation_filter;


                /* Segmentation */

            
                pp->segmentation.enabled         = frame_header->segmentation_enabled;

            
                pp->segmentation.update_map      = frame_header->segmentation_update_map;

            
                pp->segmentation.update_data     = frame_header->segmentation_update_data;

            
                pp->segmentation.temporal_update = frame_header->segmentation_temporal_update;

            
                for (i = 0; i < AV1_MAX_SEGMENTS; i++) {

            
                    for (j = 0; j < AV1_SEG_LVL_MAX; j++) {

            
                        pp->segmentation.feature_mask[i].mask |= frame_header->feature_enabled[i][j] << j;

            
                        pp->segmentation.feature_data[i][j]    = frame_header->feature_value[i][j];

            
                    }

            
                }


                /* Film grain */

            
                if (apply_grain) {

            
                    pp->film_grain.apply_grain              = 1;

            
                    pp->film_grain.scaling_shift_minus8     = film_grain->grain_scaling_minus_8;

            
                    pp->film_grain.chroma_scaling_from_luma = film_grain->chroma_scaling_from_luma;

            
                    pp->film_grain.ar_coeff_lag             = film_grain->ar_coeff_lag;

            
                    pp->film_grain.ar_coeff_shift_minus6    = film_grain->ar_coeff_shift_minus_6;

            
                    pp->film_grain.grain_scale_shift        = film_grain->grain_scale_shift;

            
                    pp->film_grain.overlap_flag             = film_grain->overlap_flag;

            
                    pp->film_grain.clip_to_restricted_range = film_grain->clip_to_restricted_range;

            
                    pp->film_grain.matrix_coeff_is_identity = (seq->color_config.matrix_coefficients == AVCOL_SPC_RGB);


                    pp->film_grain.grain_seed               = film_grain->grain_seed;

            
                    pp->film_grain.num_y_points             = film_grain->num_y_points;

            
                    for (i = 0; i < film_grain->num_y_points; i++) {

            
                        pp->film_grain.scaling_points_y[i][0] = film_grain->point_y_value[i];

            
                        pp->film_grain.scaling_points_y[i][1] = film_grain->point_y_scaling[i];

            
                    }

            
                    pp->film_grain.num_cb_points            = film_grain->num_cb_points;

            
                    for (i = 0; i < film_grain->num_cb_points; i++) {

            
                        pp->film_grain.scaling_points_cb[i][0] = film_grain->point_cb_value[i];

            
                        pp->film_grain.scaling_points_cb[i][1] = film_grain->point_cb_scaling[i];

            
                    }

            
                    pp->film_grain.num_cr_points            = film_grain->num_cr_points;

            
                    for (i = 0; i < film_grain->num_cr_points; i++) {

            
                        pp->film_grain.scaling_points_cr[i][0] = film_grain->point_cr_value[i];

            
                        pp->film_grain.scaling_points_cr[i][1] = film_grain->point_cr_scaling[i];

            
                    }

            
                    for (i = 0; i < 24; i++) {

            
                        pp->film_grain.ar_coeffs_y[i] = film_grain->ar_coeffs_y_plus_128[i];

            
                    }

            
                    for (i = 0; i < 25; i++) {

            
                        pp->film_grain.ar_coeffs_cb[i] = film_grain->ar_coeffs_cb_plus_128[i];

            
                        pp->film_grain.ar_coeffs_cr[i] = film_grain->ar_coeffs_cr_plus_128[i];

            
                    }

            
                    pp->film_grain.cb_mult      = film_grain->cb_mult;

            
                    pp->film_grain.cb_luma_mult = film_grain->cb_luma_mult;

            
                    pp->film_grain.cr_mult      = film_grain->cr_mult;

            
                    pp->film_grain.cr_luma_mult = film_grain->cr_luma_mult;

            
                    pp->film_grain.cb_offset    = film_grain->cb_offset;

            
                    pp->film_grain.cr_offset    = film_grain->cr_offset;

            
                    pp->film_grain.cr_offset    = film_grain->cr_offset;

            
                }


                // XXX: Setting the StatusReportFeedbackNumber breaks decoding on some drivers (tested on NVIDIA 457.09)

            
                // Status Reporting is not used by FFmpeg, hence not providing a number does not cause any issues

            
                //pp->StatusReportFeedbackNumber = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;

            
                return 0;

            
            }


            static int dxva2_av1_start_frame(AVCodecContext *avctx,

            
                                             av_unused const uint8_t *buffer,

            
                                             av_unused uint32_t size)

            
            {

            
                const AV1DecContext *h = avctx->priv_data;

            
                AVDXVAContext *ctx = DXVA_CONTEXT(avctx);

            
                struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;


                if (!DXVA_CONTEXT_VALID(avctx, ctx))

            
                    return -1;

            
                av_assert0(ctx_pic);


                /* Fill up DXVA_PicParams_AV1 */

            
                if (ff_dxva2_av1_fill_picture_parameters(avctx, ctx, &ctx_pic->pp) < 0)

            
                    return -1;


                ctx_pic->bitstream_size = 0;

            
                ctx_pic->bitstream      = NULL;

            
                return 0;

            
            }


            static int dxva2_av1_decode_slice(AVCodecContext *avctx,

            
                                              const uint8_t *buffer,

            
                                              uint32_t size)

            
            {

            
                const AV1DecContext *h = avctx->priv_data;

            
                const AV1RawFrameHeader *frame_header = h->raw_frame_header;

            
                struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;

            
                struct AV1DXVAContext *ctx = avctx->internal->hwaccel_priv_data;

            
                void *tmp;


                ctx_pic->tile_count = frame_header->tile_cols * frame_header->tile_rows;


                /* too many tiles, exceeding all defined levels in the AV1 spec */

            
                if (ctx_pic->tile_count > MAX_TILES)

            
                    return AVERROR(ENOSYS);


                /* Shortcut if all tiles are in the same buffer */

            
                if (ctx_pic->tile_count == h->tg_end - h->tg_start + 1) {

            
                    ctx_pic->bitstream = (uint8_t *)buffer;

            
                    ctx_pic->bitstream_size = size;


                    for (uint32_t tile_num = 0; tile_num < ctx_pic->tile_count; tile_num++) {

            
                        ctx_pic->tiles[tile_num].DataOffset   = h->tile_group_info[tile_num].tile_offset;

            
                        ctx_pic->tiles[tile_num].DataSize     = h->tile_group_info[tile_num].tile_size;

            
                        ctx_pic->tiles[tile_num].row          = h->tile_group_info[tile_num].tile_row;

            
                        ctx_pic->tiles[tile_num].column       = h->tile_group_info[tile_num].tile_column;

            
                        ctx_pic->tiles[tile_num].anchor_frame = 0xFF;

            
                    }


                    return 0;

            
                }


                /* allocate an internal buffer */

            
                tmp = av_fast_realloc(ctx->bitstream_cache, &ctx->bitstream_allocated,

            
                                      ctx_pic->bitstream_size + size);

            
                if (!tmp) {

            
                    return AVERROR(ENOMEM);

            
                }

            
                ctx_pic->bitstream = ctx->bitstream_cache = tmp;


                memcpy(ctx_pic->bitstream + ctx_pic->bitstream_size, buffer, size);


                for (uint32_t tile_num = h->tg_start; tile_num <= h->tg_end; tile_num++) {

            
                    ctx_pic->tiles[tile_num].DataOffset   = ctx_pic->bitstream_size + h->tile_group_info[tile_num].tile_offset;

            
                    ctx_pic->tiles[tile_num].DataSize     = h->tile_group_info[tile_num].tile_size;

            
                    ctx_pic->tiles[tile_num].row          = h->tile_group_info[tile_num].tile_row;

            
                    ctx_pic->tiles[tile_num].column       = h->tile_group_info[tile_num].tile_column;

            
                    ctx_pic->tiles[tile_num].anchor_frame = 0xFF;

            
                }


                ctx_pic->bitstream_size += size;


                return 0;

            
            }


            static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,

            
                                                         DECODER_BUFFER_DESC *bs,

            
                                                         DECODER_BUFFER_DESC *sc)

            
            {

            
                const AV1DecContext *h = avctx->priv_data;

            
                AVDXVAContext *ctx = DXVA_CONTEXT(avctx);

            
                struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;

            
                void     *dxva_data_ptr;

            
                uint8_t  *dxva_data;

            
                unsigned dxva_size;

            
                unsigned padding;

            
                unsigned type;


            #if CONFIG_D3D11VA

            
                if (ff_dxva2_is_d3d11(avctx)) {

            
                    type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;

            
                    if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,

            
                                                                   D3D11VA_CONTEXT(ctx)->decoder,

            
                                                                   type,

            
                                                                   &dxva_size, &dxva_data_ptr)))

            
                        return -1;

            
                }

            
            #endif

            
            #if CONFIG_DXVA2

            
                if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {

            
                    type = DXVA2_BitStreamDateBufferType;

            
                    if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,

            
                                                              type,

            
                                                              &dxva_data_ptr, &dxva_size)))

            
                        return -1;

            
                }

            
            #endif


                dxva_data = dxva_data_ptr;


                if (ctx_pic->bitstream_size > dxva_size) {

            
                    av_log(avctx, AV_LOG_ERROR, "Bitstream size exceeds hardware buffer");

            
                    return -1;

            
                }


                memcpy(dxva_data, ctx_pic->bitstream, ctx_pic->bitstream_size);


                padding = FFMIN(128 - ((ctx_pic->bitstream_size) & 127), dxva_size - ctx_pic->bitstream_size);

            
                if (padding > 0) {

            
                    memset(dxva_data + ctx_pic->bitstream_size, 0, padding);

            
                    ctx_pic->bitstream_size += padding;

            
                }


            #if CONFIG_D3D11VA

            
                if (ff_dxva2_is_d3d11(avctx))

            
                    if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))

            
                        return -1;

            
            #endif

            
            #if CONFIG_DXVA2

            
                if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)

            
                    if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))

            
                        return -1;

            
            #endif


            #if CONFIG_D3D11VA

            
                if (ff_dxva2_is_d3d11(avctx)) {

            
                    D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;

            
                    memset(dsc11, 0, sizeof(*dsc11));

            
                    dsc11->BufferType           = type;

            
                    dsc11->DataSize             = ctx_pic->bitstream_size;

            
                    dsc11->NumMBsInBuffer       = 0;


                    type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;

            
                }

            
            #endif

            
            #if CONFIG_DXVA2

            
                if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {

            
                    DXVA2_DecodeBufferDesc *dsc2 = bs;

            
                    memset(dsc2, 0, sizeof(*dsc2));

            
                    dsc2->CompressedBufferType = type;

            
                    dsc2->DataSize             = ctx_pic->bitstream_size;

            
                    dsc2->NumMBsInBuffer       = 0;


                    type = DXVA2_SliceControlBufferType;

            
                }

            
            #endif


                return ff_dxva2_commit_buffer(avctx, ctx, sc, type,

            
                                              ctx_pic->tiles, sizeof(*ctx_pic->tiles) * ctx_pic->tile_count, 0);

            
            }


            static int dxva2_av1_end_frame(AVCodecContext *avctx)

            
            {

            
                const AV1DecContext *h = avctx->priv_data;

            
                struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;

            
                int ret;


                if (ctx_pic->bitstream_size <= 0)

            
                    return -1;


                ret = ff_dxva2_common_end_frame(avctx, h->cur_frame.f,

            
                                                &ctx_pic->pp, sizeof(ctx_pic->pp),

            
                                                NULL, 0,

            
                                                commit_bitstream_and_slice_buffer);


                return ret;

            
            }


            static int dxva2_av1_uninit(AVCodecContext *avctx)

            
            {

            
                struct AV1DXVAContext *ctx = avctx->internal->hwaccel_priv_data;


                av_freep(&ctx->bitstream_cache);

            
                ctx->bitstream_allocated = 0;


                return ff_dxva2_decode_uninit(avctx);

            
            }


            #if CONFIG_AV1_DXVA2_HWACCEL

            
            const FFHWAccel ff_av1_dxva2_hwaccel = {

            
                .p.name         = "av1_dxva2",

            
                .p.type         = AVMEDIA_TYPE_VIDEO,

            
                .p.id           = AV_CODEC_ID_AV1,

            
                .p.pix_fmt      = AV_PIX_FMT_DXVA2_VLD,

            
                .init           = ff_dxva2_decode_init,

            
                .uninit         = dxva2_av1_uninit,

            
                .start_frame    = dxva2_av1_start_frame,

            
                .decode_slice   = dxva2_av1_decode_slice,

            
                .end_frame      = dxva2_av1_end_frame,

            
                .frame_params   = ff_dxva2_common_frame_params,

            
                .frame_priv_data_size = sizeof(struct av1_dxva2_picture_context),

            
                .priv_data_size = sizeof(struct AV1DXVAContext),

            
            };

            
            #endif


            #if CONFIG_AV1_D3D11VA_HWACCEL

            
            const FFHWAccel ff_av1_d3d11va_hwaccel = {

            
                .p.name         = "av1_d3d11va",

            
                .p.type         = AVMEDIA_TYPE_VIDEO,

            
                .p.id           = AV_CODEC_ID_AV1,

            
                .p.pix_fmt      = AV_PIX_FMT_D3D11VA_VLD,

            
                .init           = ff_dxva2_decode_init,

            
                .uninit         = dxva2_av1_uninit,

            
                .start_frame    = dxva2_av1_start_frame,

            
                .decode_slice   = dxva2_av1_decode_slice,

            
                .end_frame      = dxva2_av1_end_frame,

            
                .frame_params   = ff_dxva2_common_frame_params,

            
                .frame_priv_data_size = sizeof(struct av1_dxva2_picture_context),

            
                .priv_data_size = sizeof(struct AV1DXVAContext),

            
            };

            
            #endif


            #if CONFIG_AV1_D3D11VA2_HWACCEL

            
            const FFHWAccel ff_av1_d3d11va2_hwaccel = {

            
                .p.name         = "av1_d3d11va2",

            
                .p.type         = AVMEDIA_TYPE_VIDEO,

            
                .p.id           = AV_CODEC_ID_AV1,

            
                .p.pix_fmt      = AV_PIX_FMT_D3D11,

            
                .init           = ff_dxva2_decode_init,

            
                .uninit         = dxva2_av1_uninit,

            
                .start_frame    = dxva2_av1_start_frame,

            
                .decode_slice   = dxva2_av1_decode_slice,

            
                .end_frame      = dxva2_av1_end_frame,

            
                .frame_params   = ff_dxva2_common_frame_params,

            
                .frame_priv_data_size = sizeof(struct av1_dxva2_picture_context),

            
                .priv_data_size = sizeof(struct AV1DXVAContext),

            
            };

            
            #endif
	/*
	* DXVA2 AV1 HW acceleration.
	*
	* copyright (c) 2020 Hendrik Leppkes
	*
	* 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 "config_components.h"

	#include "libavutil/avassert.h"
	#include "libavutil/pixdesc.h"

	#include "dxva2_internal.h"
	#include "av1dec.h"
	#include "hwaccel_internal.h"

	#define MAX_TILES 256

	struct AV1DXVAContext {
	FFDXVASharedContext shared;

	unsigned int bitstream_allocated;
	uint8_t *bitstream_cache;
	};

	struct av1_dxva2_picture_context {
	DXVA_PicParams_AV1 pp;
	unsigned tile_count;
	DXVA_Tile_AV1 tiles[MAX_TILES];
	uint8_t *bitstream;
	unsigned bitstream_size;
	};

	static int get_bit_depth_from_seq(const AV1RawSequenceHeader *seq)
	{
	if (seq->seq_profile == 2 && seq->color_config.high_bitdepth)
	return seq->color_config.twelve_bit ? 12 : 10;
	else if (seq->seq_profile <= 2 && seq->color_config.high_bitdepth)
	return 10;
	else
	return 8;
	}

	int ff_dxva2_av1_fill_picture_parameters(const AVCodecContext avctx, AVDXVAContext ctx,
	DXVA_PicParams_AV1 *pp)
	{
	int i,j, uses_lr;
	const AV1DecContext *h = avctx->priv_data;
	const AV1RawSequenceHeader *seq = h->raw_seq;
	const AV1RawFrameHeader *frame_header = h->raw_frame_header;
	const AV1RawFilmGrainParams *film_grain = &h->cur_frame.film_grain;

	unsigned char remap_lr_type[4] = { AV1_RESTORE_NONE, AV1_RESTORE_SWITCHABLE, AV1_RESTORE_WIENER, AV1_RESTORE_SGRPROJ };
	int apply_grain = !(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN) && film_grain->apply_grain;

	memset(pp, 0, sizeof(*pp));

	pp->width = avctx->width;
	pp->height = avctx->height;

	pp->max_width = seq->max_frame_width_minus_1 + 1;
	pp->max_height = seq->max_frame_height_minus_1 + 1;

	pp->superres_denom = frame_header->use_superres ? frame_header->coded_denom + AV1_SUPERRES_DENOM_MIN : AV1_SUPERRES_NUM;
	pp->bitdepth = get_bit_depth_from_seq(seq);
	pp->seq_profile = seq->seq_profile;

	/* Tiling info */
	pp->tiles.cols = frame_header->tile_cols;
	pp->tiles.rows = frame_header->tile_rows;
	pp->tiles.context_update_id = frame_header->context_update_tile_id;

	for (i = 0; i < pp->tiles.cols; i++)
	pp->tiles.widths[i] = frame_header->width_in_sbs_minus_1[i] + 1;

	for (i = 0; i < pp->tiles.rows; i++)
	pp->tiles.heights[i] = frame_header->height_in_sbs_minus_1[i] + 1;

	/* Coding tools */
	pp->coding.use_128x128_superblock = seq->use_128x128_superblock;
	pp->coding.intra_edge_filter = seq->enable_intra_edge_filter;
	pp->coding.interintra_compound = seq->enable_interintra_compound;
	pp->coding.masked_compound = seq->enable_masked_compound;
	pp->coding.warped_motion = frame_header->allow_warped_motion;
	pp->coding.dual_filter = seq->enable_dual_filter;
	pp->coding.jnt_comp = seq->enable_jnt_comp;
	pp->coding.screen_content_tools = frame_header->allow_screen_content_tools;
	pp->coding.integer_mv = frame_header->force_integer_mv \|\| !(frame_header->frame_type & 1);
	pp->coding.cdef = seq->enable_cdef;
	pp->coding.restoration = seq->enable_restoration;
	pp->coding.film_grain = seq->film_grain_params_present && !(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN);
	pp->coding.intrabc = frame_header->allow_intrabc;
	pp->coding.high_precision_mv = frame_header->allow_high_precision_mv;
	pp->coding.switchable_motion_mode = frame_header->is_motion_mode_switchable;
	pp->coding.filter_intra = seq->enable_filter_intra;
	pp->coding.disable_frame_end_update_cdf = frame_header->disable_frame_end_update_cdf;
	pp->coding.disable_cdf_update = frame_header->disable_cdf_update;
	pp->coding.reference_mode = frame_header->reference_select;
	pp->coding.skip_mode = frame_header->skip_mode_present;
	pp->coding.reduced_tx_set = frame_header->reduced_tx_set;
	pp->coding.superres = frame_header->use_superres;
	pp->coding.tx_mode = frame_header->tx_mode;
	pp->coding.use_ref_frame_mvs = frame_header->use_ref_frame_mvs;
	pp->coding.enable_ref_frame_mvs = seq->enable_ref_frame_mvs;
	pp->coding.reference_frame_update = 1; // 0 for show_existing_frame with key frames, but those are not passed to the hwaccel

	/* Format & Picture Info flags */
	pp->format.frame_type = frame_header->frame_type;
	pp->format.show_frame = frame_header->show_frame;
	pp->format.showable_frame = frame_header->showable_frame;
	pp->format.subsampling_x = seq->color_config.subsampling_x;
	pp->format.subsampling_y = seq->color_config.subsampling_y;
	pp->format.mono_chrome = seq->color_config.mono_chrome;

	/* References */
	pp->primary_ref_frame = frame_header->primary_ref_frame;
	pp->order_hint = frame_header->order_hint;
	pp->order_hint_bits = seq->enable_order_hint ? seq->order_hint_bits_minus_1 + 1 : 0;

	memset(pp->RefFrameMapTextureIndex, 0xFF, sizeof(pp->RefFrameMapTextureIndex));
	for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
	int8_t ref_idx = frame_header->ref_frame_idx[i];
	AVFrame *ref_frame = h->ref[ref_idx].f;

	pp->frame_refs[i].width = ref_frame->width;
	pp->frame_refs[i].height = ref_frame->height;
	pp->frame_refs[i].Index = ref_frame->buf[0] ? ref_idx : 0xFF;

	/* Global Motion */
	pp->frame_refs[i].wminvalid = h->cur_frame.gm_invalid[AV1_REF_FRAME_LAST + i];
	pp->frame_refs[i].wmtype = h->cur_frame.gm_type[AV1_REF_FRAME_LAST + i];
	for (j = 0; j < 6; ++j) {
	pp->frame_refs[i].wmmat[j] = h->cur_frame.gm_params[AV1_REF_FRAME_LAST + i][j];
	}
	}
	for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
	AVFrame *ref_frame = h->ref[i].f;
	if (ref_frame->buf[0])
	pp->RefFrameMapTextureIndex[i] = ff_dxva2_get_surface_index(avctx, ctx, ref_frame, 0);
	}

	pp->CurrPicTextureIndex = ff_dxva2_get_surface_index(avctx, ctx, h->cur_frame.f, 1);

	/* Loop filter parameters */
	pp->loop_filter.filter_level[0] = frame_header->loop_filter_level[0];
	pp->loop_filter.filter_level[1] = frame_header->loop_filter_level[1];
	pp->loop_filter.filter_level_u = frame_header->loop_filter_level[2];
	pp->loop_filter.filter_level_v = frame_header->loop_filter_level[3];
	pp->loop_filter.sharpness_level = frame_header->loop_filter_sharpness;
	pp->loop_filter.mode_ref_delta_enabled = frame_header->loop_filter_delta_enabled;
	pp->loop_filter.mode_ref_delta_update = frame_header->loop_filter_delta_update;
	pp->loop_filter.delta_lf_multi = frame_header->delta_lf_multi;
	pp->loop_filter.delta_lf_present = frame_header->delta_lf_present;
	pp->loop_filter.delta_lf_res = frame_header->delta_lf_res;

	for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++) {
	pp->loop_filter.ref_deltas[i] = frame_header->loop_filter_ref_deltas[i];
	}

	pp->loop_filter.mode_deltas[0] = frame_header->loop_filter_mode_deltas[0];
	pp->loop_filter.mode_deltas[1] = frame_header->loop_filter_mode_deltas[1];
	pp->loop_filter.frame_restoration_type[0] = remap_lr_type[frame_header->lr_type[0]];
	pp->loop_filter.frame_restoration_type[1] = remap_lr_type[frame_header->lr_type[1]];
	pp->loop_filter.frame_restoration_type[2] = remap_lr_type[frame_header->lr_type[2]];
	uses_lr = frame_header->lr_type[0] \|\| frame_header->lr_type[1] \|\| frame_header->lr_type[2];
	pp->loop_filter.log2_restoration_unit_size[0] = uses_lr ? (6 + frame_header->lr_unit_shift) : 8;
	pp->loop_filter.log2_restoration_unit_size[1] = uses_lr ? (6 + frame_header->lr_unit_shift - frame_header->lr_uv_shift) : 8;
	pp->loop_filter.log2_restoration_unit_size[2] = uses_lr ? (6 + frame_header->lr_unit_shift - frame_header->lr_uv_shift) : 8;

	/* Quantization */
	pp->quantization.delta_q_present = frame_header->delta_q_present;
	pp->quantization.delta_q_res = frame_header->delta_q_res;
	pp->quantization.base_qindex = frame_header->base_q_idx;
	pp->quantization.y_dc_delta_q = frame_header->delta_q_y_dc;
	pp->quantization.u_dc_delta_q = frame_header->delta_q_u_dc;
	pp->quantization.v_dc_delta_q = frame_header->delta_q_v_dc;
	pp->quantization.u_ac_delta_q = frame_header->delta_q_u_ac;
	pp->quantization.v_ac_delta_q = frame_header->delta_q_v_ac;
	pp->quantization.qm_y = frame_header->using_qmatrix ? frame_header->qm_y : 0xFF;
	pp->quantization.qm_u = frame_header->using_qmatrix ? frame_header->qm_u : 0xFF;
	pp->quantization.qm_v = frame_header->using_qmatrix ? frame_header->qm_v : 0xFF;

	/* Cdef parameters */
	pp->cdef.damping = frame_header->cdef_damping_minus_3;
	pp->cdef.bits = frame_header->cdef_bits;
	for (i = 0; i < 8; i++) {
	pp->cdef.y_strengths[i].primary = frame_header->cdef_y_pri_strength[i];
	pp->cdef.y_strengths[i].secondary = frame_header->cdef_y_sec_strength[i];
	pp->cdef.uv_strengths[i].primary = frame_header->cdef_uv_pri_strength[i];
	pp->cdef.uv_strengths[i].secondary = frame_header->cdef_uv_sec_strength[i];
	}

	/* Misc flags */
	pp->interp_filter = frame_header->interpolation_filter;

	/* Segmentation */
	pp->segmentation.enabled = frame_header->segmentation_enabled;
	pp->segmentation.update_map = frame_header->segmentation_update_map;
	pp->segmentation.update_data = frame_header->segmentation_update_data;
	pp->segmentation.temporal_update = frame_header->segmentation_temporal_update;
	for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
	for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
	pp->segmentation.feature_mask[i].mask \|= frame_header->feature_enabled[i][j] << j;
	pp->segmentation.feature_data[i][j] = frame_header->feature_value[i][j];
	}
	}

	/* Film grain */
	if (apply_grain) {
	pp->film_grain.apply_grain = 1;
	pp->film_grain.scaling_shift_minus8 = film_grain->grain_scaling_minus_8;
	pp->film_grain.chroma_scaling_from_luma = film_grain->chroma_scaling_from_luma;
	pp->film_grain.ar_coeff_lag = film_grain->ar_coeff_lag;
	pp->film_grain.ar_coeff_shift_minus6 = film_grain->ar_coeff_shift_minus_6;
	pp->film_grain.grain_scale_shift = film_grain->grain_scale_shift;
	pp->film_grain.overlap_flag = film_grain->overlap_flag;
	pp->film_grain.clip_to_restricted_range = film_grain->clip_to_restricted_range;
	pp->film_grain.matrix_coeff_is_identity = (seq->color_config.matrix_coefficients == AVCOL_SPC_RGB);

	pp->film_grain.grain_seed = film_grain->grain_seed;
	pp->film_grain.num_y_points = film_grain->num_y_points;
	for (i = 0; i < film_grain->num_y_points; i++) {
	pp->film_grain.scaling_points_y[i][0] = film_grain->point_y_value[i];
	pp->film_grain.scaling_points_y[i][1] = film_grain->point_y_scaling[i];
	}
	pp->film_grain.num_cb_points = film_grain->num_cb_points;
	for (i = 0; i < film_grain->num_cb_points; i++) {
	pp->film_grain.scaling_points_cb[i][0] = film_grain->point_cb_value[i];
	pp->film_grain.scaling_points_cb[i][1] = film_grain->point_cb_scaling[i];
	}
	pp->film_grain.num_cr_points = film_grain->num_cr_points;
	for (i = 0; i < film_grain->num_cr_points; i++) {
	pp->film_grain.scaling_points_cr[i][0] = film_grain->point_cr_value[i];
	pp->film_grain.scaling_points_cr[i][1] = film_grain->point_cr_scaling[i];
	}
	for (i = 0; i < 24; i++) {
	pp->film_grain.ar_coeffs_y[i] = film_grain->ar_coeffs_y_plus_128[i];
	}
	for (i = 0; i < 25; i++) {
	pp->film_grain.ar_coeffs_cb[i] = film_grain->ar_coeffs_cb_plus_128[i];
	pp->film_grain.ar_coeffs_cr[i] = film_grain->ar_coeffs_cr_plus_128[i];
	}
	pp->film_grain.cb_mult = film_grain->cb_mult;
	pp->film_grain.cb_luma_mult = film_grain->cb_luma_mult;
	pp->film_grain.cr_mult = film_grain->cr_mult;
	pp->film_grain.cr_luma_mult = film_grain->cr_luma_mult;
	pp->film_grain.cb_offset = film_grain->cb_offset;
	pp->film_grain.cr_offset = film_grain->cr_offset;
	pp->film_grain.cr_offset = film_grain->cr_offset;
	}

	// XXX: Setting the StatusReportFeedbackNumber breaks decoding on some drivers (tested on NVIDIA 457.09)
	// Status Reporting is not used by FFmpeg, hence not providing a number does not cause any issues
	//pp->StatusReportFeedbackNumber = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
	return 0;
	}

	static int dxva2_av1_start_frame(AVCodecContext *avctx,
	av_unused const uint8_t *buffer,
	av_unused uint32_t size)
	{
	const AV1DecContext *h = avctx->priv_data;
	AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
	struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;

	if (!DXVA_CONTEXT_VALID(avctx, ctx))
	return -1;
	av_assert0(ctx_pic);

	/* Fill up DXVA_PicParams_AV1 */
	if (ff_dxva2_av1_fill_picture_parameters(avctx, ctx, &ctx_pic->pp) < 0)
	return -1;

	ctx_pic->bitstream_size = 0;
	ctx_pic->bitstream = NULL;
	return 0;
	}

	static int dxva2_av1_decode_slice(AVCodecContext *avctx,
	const uint8_t *buffer,
	uint32_t size)
	{
	const AV1DecContext *h = avctx->priv_data;
	const AV1RawFrameHeader *frame_header = h->raw_frame_header;
	struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;
	struct AV1DXVAContext *ctx = avctx->internal->hwaccel_priv_data;
	void *tmp;

	ctx_pic->tile_count = frame_header->tile_cols * frame_header->tile_rows;

	/* too many tiles, exceeding all defined levels in the AV1 spec */
	if (ctx_pic->tile_count > MAX_TILES)
	return AVERROR(ENOSYS);

	/* Shortcut if all tiles are in the same buffer */
	if (ctx_pic->tile_count == h->tg_end - h->tg_start + 1) {
	ctx_pic->bitstream = (uint8_t *)buffer;
	ctx_pic->bitstream_size = size;

	for (uint32_t tile_num = 0; tile_num < ctx_pic->tile_count; tile_num++) {
	ctx_pic->tiles[tile_num].DataOffset = h->tile_group_info[tile_num].tile_offset;
	ctx_pic->tiles[tile_num].DataSize = h->tile_group_info[tile_num].tile_size;
	ctx_pic->tiles[tile_num].row = h->tile_group_info[tile_num].tile_row;
	ctx_pic->tiles[tile_num].column = h->tile_group_info[tile_num].tile_column;
	ctx_pic->tiles[tile_num].anchor_frame = 0xFF;
	}

	return 0;
	}

	/* allocate an internal buffer */
	tmp = av_fast_realloc(ctx->bitstream_cache, &ctx->bitstream_allocated,
	ctx_pic->bitstream_size + size);
	if (!tmp) {
	return AVERROR(ENOMEM);
	}
	ctx_pic->bitstream = ctx->bitstream_cache = tmp;

	memcpy(ctx_pic->bitstream + ctx_pic->bitstream_size, buffer, size);

	for (uint32_t tile_num = h->tg_start; tile_num <= h->tg_end; tile_num++) {
	ctx_pic->tiles[tile_num].DataOffset = ctx_pic->bitstream_size + h->tile_group_info[tile_num].tile_offset;
	ctx_pic->tiles[tile_num].DataSize = h->tile_group_info[tile_num].tile_size;
	ctx_pic->tiles[tile_num].row = h->tile_group_info[tile_num].tile_row;
	ctx_pic->tiles[tile_num].column = h->tile_group_info[tile_num].tile_column;
	ctx_pic->tiles[tile_num].anchor_frame = 0xFF;
	}

	ctx_pic->bitstream_size += size;

	return 0;
	}

	static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
	DECODER_BUFFER_DESC *bs,
	DECODER_BUFFER_DESC *sc)
	{
	const AV1DecContext *h = avctx->priv_data;
	AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
	struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;
	void *dxva_data_ptr;
	uint8_t *dxva_data;
	unsigned dxva_size;
	unsigned padding;
	unsigned type;

	#if CONFIG_D3D11VA
	if (ff_dxva2_is_d3d11(avctx)) {
	type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
	if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
	D3D11VA_CONTEXT(ctx)->decoder,
	type,
	&dxva_size, &dxva_data_ptr)))
	return -1;
	}
	#endif
	#if CONFIG_DXVA2
	if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
	type = DXVA2_BitStreamDateBufferType;
	if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
	type,
	&dxva_data_ptr, &dxva_size)))
	return -1;
	}
	#endif

	dxva_data = dxva_data_ptr;

	if (ctx_pic->bitstream_size > dxva_size) {
	av_log(avctx, AV_LOG_ERROR, "Bitstream size exceeds hardware buffer");
	return -1;
	}

	memcpy(dxva_data, ctx_pic->bitstream, ctx_pic->bitstream_size);

	padding = FFMIN(128 - ((ctx_pic->bitstream_size) & 127), dxva_size - ctx_pic->bitstream_size);
	if (padding > 0) {
	memset(dxva_data + ctx_pic->bitstream_size, 0, padding);
	ctx_pic->bitstream_size += padding;
	}

	#if CONFIG_D3D11VA
	if (ff_dxva2_is_d3d11(avctx))
	if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
	return -1;
	#endif
	#if CONFIG_DXVA2
	if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
	if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
	return -1;
	#endif

	#if CONFIG_D3D11VA
	if (ff_dxva2_is_d3d11(avctx)) {
	D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
	memset(dsc11, 0, sizeof(*dsc11));
	dsc11->BufferType = type;
	dsc11->DataSize = ctx_pic->bitstream_size;
	dsc11->NumMBsInBuffer = 0;

	type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
	}
	#endif
	#if CONFIG_DXVA2
	if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
	DXVA2_DecodeBufferDesc *dsc2 = bs;
	memset(dsc2, 0, sizeof(*dsc2));
	dsc2->CompressedBufferType = type;
	dsc2->DataSize = ctx_pic->bitstream_size;
	dsc2->NumMBsInBuffer = 0;

	type = DXVA2_SliceControlBufferType;
	}
	#endif

	return ff_dxva2_commit_buffer(avctx, ctx, sc, type,
	ctx_pic->tiles, sizeof(ctx_pic->tiles) ctx_pic->tile_count, 0);
	}

	static int dxva2_av1_end_frame(AVCodecContext *avctx)
	{
	const AV1DecContext *h = avctx->priv_data;
	struct av1_dxva2_picture_context *ctx_pic = h->cur_frame.hwaccel_picture_private;
	int ret;

	if (ctx_pic->bitstream_size <= 0)
	return -1;

	ret = ff_dxva2_common_end_frame(avctx, h->cur_frame.f,
	&ctx_pic->pp, sizeof(ctx_pic->pp),
	NULL, 0,
	commit_bitstream_and_slice_buffer);

	return ret;
	}

	static int dxva2_av1_uninit(AVCodecContext *avctx)
	{
	struct AV1DXVAContext *ctx = avctx->internal->hwaccel_priv_data;

	av_freep(&ctx->bitstream_cache);
	ctx->bitstream_allocated = 0;

	return ff_dxva2_decode_uninit(avctx);
	}

	#if CONFIG_AV1_DXVA2_HWACCEL
	const FFHWAccel ff_av1_dxva2_hwaccel = {
	.p.name = "av1_dxva2",
	.p.type = AVMEDIA_TYPE_VIDEO,
	.p.id = AV_CODEC_ID_AV1,
	.p.pix_fmt = AV_PIX_FMT_DXVA2_VLD,
	.init = ff_dxva2_decode_init,
	.uninit = dxva2_av1_uninit,
	.start_frame = dxva2_av1_start_frame,
	.decode_slice = dxva2_av1_decode_slice,
	.end_frame = dxva2_av1_end_frame,
	.frame_params = ff_dxva2_common_frame_params,
	.frame_priv_data_size = sizeof(struct av1_dxva2_picture_context),
	.priv_data_size = sizeof(struct AV1DXVAContext),
	};
	#endif

	#if CONFIG_AV1_D3D11VA_HWACCEL
	const FFHWAccel ff_av1_d3d11va_hwaccel = {
	.p.name = "av1_d3d11va",
	.p.type = AVMEDIA_TYPE_VIDEO,
	.p.id = AV_CODEC_ID_AV1,
	.p.pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
	.init = ff_dxva2_decode_init,
	.uninit = dxva2_av1_uninit,
	.start_frame = dxva2_av1_start_frame,
	.decode_slice = dxva2_av1_decode_slice,
	.end_frame = dxva2_av1_end_frame,
	.frame_params = ff_dxva2_common_frame_params,
	.frame_priv_data_size = sizeof(struct av1_dxva2_picture_context),
	.priv_data_size = sizeof(struct AV1DXVAContext),
	};
	#endif

	#if CONFIG_AV1_D3D11VA2_HWACCEL
	const FFHWAccel ff_av1_d3d11va2_hwaccel = {
	.p.name = "av1_d3d11va2",
	.p.type = AVMEDIA_TYPE_VIDEO,
	.p.id = AV_CODEC_ID_AV1,
	.p.pix_fmt = AV_PIX_FMT_D3D11,
	.init = ff_dxva2_decode_init,
	.uninit = dxva2_av1_uninit,
	.start_frame = dxva2_av1_start_frame,
	.decode_slice = dxva2_av1_decode_slice,
	.end_frame = dxva2_av1_end_frame,
	.frame_params = ff_dxva2_common_frame_params,
	.frame_priv_data_size = sizeof(struct av1_dxva2_picture_context),
	.priv_data_size = sizeof(struct AV1DXVAContext),
	};
	#endif