libavcodec/dxva2_hevc.c - nest-android-app/ffmpeg - Git at Google

 /*
  * DXVA2 HEVC HW acceleration.
  *
  * copyright (c) 2014 - 2015 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 "libavutil/avassert.h"

 #include "hevc.h"

 // The headers above may include w32threads.h, which uses the original
 // _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
 // potentially newer version.
 #include "dxva2_internal.h"

 #define MAX_SLICES 256

 struct hevc_dxva2_picture_context {
     DXVA_PicParams_HEVC   pp;
     DXVA_Qmatrix_HEVC     qm;
     unsigned              slice_count;
     DXVA_Slice_HEVC_Short slice_short[MAX_SLICES];
     const uint8_t         *bitstream;
     unsigned              bitstream_size;
 };

 static void fill_picture_entry(DXVA_PicEntry_HEVC *pic,
                                unsigned index, unsigned flag)
 {
     av_assert0((index & 0x7f) == index && (flag & 0x01) == flag);
     pic->bPicEntry = index | (flag << 7);
 }

 static int get_refpic_index(const DXVA_PicParams_HEVC *pp, int surface_index)
 {
     int i;
     for (i = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
         if ((pp->RefPicList[i].bPicEntry & 0x7f) == surface_index)
           return i;
     }
     return 0xff;
 }

 static void fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const HEVCContext *h,
                                     DXVA_PicParams_HEVC *pp)
 {
     const HEVCFrame *current_picture = h->ref;
     const HEVCSPS *sps = h->ps.sps;
     const HEVCPPS *pps = h->ps.pps;
     int i, j;

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

     pp->PicWidthInMinCbsY  = sps->min_cb_width;
     pp->PicHeightInMinCbsY = sps->min_cb_height;

     pp->wFormatAndSequenceInfoFlags = (sps->chroma_format_idc             <<  0) |
                                       (sps->separate_colour_plane_flag    <<  2) |
                                       ((sps->bit_depth - 8)               <<  3) |
                                       ((sps->bit_depth - 8)               <<  6) |
                                       ((sps->log2_max_poc_lsb - 4)        <<  9) |
                                       (0                                  << 13) |
                                       (0                                  << 14) |
                                       (0                                  << 15);

     fill_picture_entry(&pp->CurrPic, ff_dxva2_get_surface_index(avctx, ctx, current_picture->frame), 0);

     pp->sps_max_dec_pic_buffering_minus1         = sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering - 1;
     pp->log2_min_luma_coding_block_size_minus3   = sps->log2_min_cb_size - 3;
     pp->log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size;
     pp->log2_min_transform_block_size_minus2     = sps->log2_min_tb_size - 2;
     pp->log2_diff_max_min_transform_block_size   = sps->log2_max_trafo_size  - sps->log2_min_tb_size;
     pp->max_transform_hierarchy_depth_inter      = sps->max_transform_hierarchy_depth_inter;
     pp->max_transform_hierarchy_depth_intra      = sps->max_transform_hierarchy_depth_intra;
     pp->num_short_term_ref_pic_sets              = sps->nb_st_rps;
     pp->num_long_term_ref_pics_sps               = sps->num_long_term_ref_pics_sps;

     pp->num_ref_idx_l0_default_active_minus1     = pps->num_ref_idx_l0_default_active - 1;
     pp->num_ref_idx_l1_default_active_minus1     = pps->num_ref_idx_l1_default_active - 1;
     pp->init_qp_minus26                          = pps->pic_init_qp_minus26;

     if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) {
         pp->ucNumDeltaPocsOfRefRpsIdx            = h->sh.short_term_rps->rps_idx_num_delta_pocs;
         pp->wNumBitsForShortTermRPSInSlice       = h->sh.short_term_ref_pic_set_size;
     }

     pp->dwCodingParamToolFlags = (sps->scaling_list_enable_flag                  <<  0) |
                                  (sps->amp_enabled_flag                          <<  1) |
                                  (sps->sao_enabled                               <<  2) |
                                  (sps->pcm_enabled_flag                          <<  3) |
                                  ((sps->pcm_enabled_flag ? (sps->pcm.bit_depth - 1) : 0)            <<  4) |
                                  ((sps->pcm_enabled_flag ? (sps->pcm.bit_depth_chroma - 1) : 0)     <<  8) |
                                  ((sps->pcm_enabled_flag ? (sps->pcm.log2_min_pcm_cb_size - 3) : 0) << 12) |
                                  ((sps->pcm_enabled_flag ? (sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size) : 0) << 14) |
                                  (sps->pcm.loop_filter_disable_flag              << 16) |
                                  (sps->long_term_ref_pics_present_flag           << 17) |
                                  (sps->sps_temporal_mvp_enabled_flag             << 18) |
                                  (sps->sps_strong_intra_smoothing_enable_flag    << 19) |
                                  (pps->dependent_slice_segments_enabled_flag     << 20) |
                                  (pps->output_flag_present_flag                  << 21) |
                                  (pps->num_extra_slice_header_bits               << 22) |
                                  (pps->sign_data_hiding_flag                     << 25) |
                                  (pps->cabac_init_present_flag                   << 26) |
                                  (0                                              << 27);

     pp->dwCodingSettingPicturePropertyFlags = (pps->constrained_intra_pred_flag                   <<  0) |
                                               (pps->transform_skip_enabled_flag                   <<  1) |
                                               (pps->cu_qp_delta_enabled_flag                      <<  2) |
                                               (pps->pic_slice_level_chroma_qp_offsets_present_flag <<  3) |
                                               (pps->weighted_pred_flag                            <<  4) |
                                               (pps->weighted_bipred_flag                          <<  5) |
                                               (pps->transquant_bypass_enable_flag                 <<  6) |
                                               (pps->tiles_enabled_flag                            <<  7) |
                                               (pps->entropy_coding_sync_enabled_flag              <<  8) |
                                               (pps->uniform_spacing_flag                          <<  9) |
                                               ((pps->tiles_enabled_flag ? pps->loop_filter_across_tiles_enabled_flag : 0) << 10) |
                                               (pps->seq_loop_filter_across_slices_enabled_flag    << 11) |
                                               (pps->deblocking_filter_override_enabled_flag       << 12) |
                                               (pps->disable_dbf                                   << 13) |
                                               (pps->lists_modification_present_flag               << 14) |
                                               (pps->slice_header_extension_present_flag           << 15) |
                                               (IS_IRAP(h)                                         << 16) |
                                               (IS_IDR(h)                                          << 17) |
                                               /* IntraPicFlag */
                                               (IS_IRAP(h)                                         << 18) |
                                               (0                                                  << 19);
     pp->pps_cb_qp_offset            = pps->cb_qp_offset;
     pp->pps_cr_qp_offset            = pps->cr_qp_offset;
     if (pps->tiles_enabled_flag) {
         pp->num_tile_columns_minus1 = pps->num_tile_columns - 1;
         pp->num_tile_rows_minus1    = pps->num_tile_rows - 1;

         if (!pps->uniform_spacing_flag) {
             for (i = 0; i < pps->num_tile_columns; i++)
                 pp->column_width_minus1[i] = pps->column_width[i] - 1;

             for (i = 0; i < pps->num_tile_rows; i++)
                 pp->row_height_minus1[i] = pps->row_height[i] - 1;
         }
     }

     pp->diff_cu_qp_delta_depth           = pps->diff_cu_qp_delta_depth;
     pp->pps_beta_offset_div2             = pps->beta_offset / 2;
     pp->pps_tc_offset_div2               = pps->tc_offset / 2;
     pp->log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2;
     pp->CurrPicOrderCntVal               = h->poc;

     // fill RefPicList from the DPB
     for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
         const HEVCFrame *frame = NULL;
         while (!frame && j < FF_ARRAY_ELEMS(h->DPB)) {
             if (&h->DPB[j] != current_picture && (h->DPB[j].flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF)))
                 frame = &h->DPB[j];
             j++;
         }

         if (frame) {
             fill_picture_entry(&pp->RefPicList[i], ff_dxva2_get_surface_index(avctx, ctx, frame->frame), !!(frame->flags & HEVC_FRAME_FLAG_LONG_REF));
             pp->PicOrderCntValList[i] = frame->poc;
         } else {
             pp->RefPicList[i].bPicEntry = 0xff;
             pp->PicOrderCntValList[i]   = 0;
         }
     }

     #define DO_REF_LIST(ref_idx, ref_list) { \
         const RefPicList *rpl = &h->rps[ref_idx]; \
         for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ref_list); i++) { \
             const HEVCFrame *frame = NULL; \
             while (!frame && j < rpl->nb_refs) \
                 frame = rpl->ref[j++]; \
             if (frame) \
                 pp->ref_list[i] = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, frame->frame)); \
             else \
                 pp->ref_list[i] = 0xff; \
         } \
     }

     // Fill short term and long term lists
     DO_REF_LIST(ST_CURR_BEF, RefPicSetStCurrBefore);
     DO_REF_LIST(ST_CURR_AFT, RefPicSetStCurrAfter);
     DO_REF_LIST(LT_CURR, RefPicSetLtCurr);

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

 static void fill_scaling_lists(AVDXVAContext *ctx, const HEVCContext *h, DXVA_Qmatrix_HEVC *qm)
 {
     unsigned i, j, pos;
     const ScalingList *sl = h->ps.pps->scaling_list_data_present_flag ?
                             &h->ps.pps->scaling_list : &h->ps.sps->scaling_list;

     memset(qm, 0, sizeof(*qm));
     for (i = 0; i < 6; i++) {
         for (j = 0; j < 16; j++) {
             pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j];
             qm->ucScalingLists0[i][j] = sl->sl[0][i][pos];
         }

         for (j = 0; j < 64; j++) {
             pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j];
             qm->ucScalingLists1[i][j] = sl->sl[1][i][pos];
             qm->ucScalingLists2[i][j] = sl->sl[2][i][pos];

             if (i < 2)
                 qm->ucScalingLists3[i][j] = sl->sl[3][i * 3][pos];
         }

         qm->ucScalingListDCCoefSizeID2[i] = sl->sl_dc[0][i];
         if (i < 2)
             qm->ucScalingListDCCoefSizeID3[i] = sl->sl_dc[1][i * 3];
     }
 }

 static void fill_slice_short(DXVA_Slice_HEVC_Short *slice,
                              unsigned position, unsigned size)
 {
     memset(slice, 0, sizeof(*slice));
     slice->BSNALunitDataLocation = position;
     slice->SliceBytesInBuffer    = size;
     slice->wBadSliceChopping     = 0;
 }

 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
                                              DECODER_BUFFER_DESC *bs,
                                              DECODER_BUFFER_DESC *sc)
 {
     const HEVCContext *h = avctx->priv_data;
     AVDXVAContext *ctx = avctx->hwaccel_context;
     const HEVCFrame *current_picture = h->ref;
     struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
     DXVA_Slice_HEVC_Short *slice = NULL;
     void     *dxva_data_ptr;
     uint8_t  *dxva_data, *current, *end;
     unsigned dxva_size;
     void     *slice_data;
     unsigned slice_size;
     unsigned padding;
     unsigned i;
     unsigned type;

     /* Create an annex B bitstream buffer with only slice NAL and finalize slice */
 #if CONFIG_D3D11VA
     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
         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;
     current = dxva_data;
     end = dxva_data + dxva_size;

     for (i = 0; i < ctx_pic->slice_count; i++) {
         static const uint8_t start_code[] = { 0, 0, 1 };
         static const unsigned start_code_size = sizeof(start_code);
         unsigned position, size;

         slice = &ctx_pic->slice_short[i];

         position = slice->BSNALunitDataLocation;
         size     = slice->SliceBytesInBuffer;
         if (start_code_size + size > end - current) {
             av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
             break;
         }

         slice->BSNALunitDataLocation = current - dxva_data;
         slice->SliceBytesInBuffer    = start_code_size + size;

         memcpy(current, start_code, start_code_size);
         current += start_code_size;

         memcpy(current, &ctx_pic->bitstream[position], size);
         current += size;
     }
     padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
     if (slice && padding > 0) {
         memset(current, 0, padding);
         current += padding;

         slice->SliceBytesInBuffer += padding;
     }
 #if CONFIG_D3D11VA
     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
         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 (i < ctx_pic->slice_count)
         return -1;

 #if CONFIG_D3D11VA
     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
         D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
         memset(dsc11, 0, sizeof(*dsc11));
         dsc11->BufferType           = type;
         dsc11->DataSize             = current - dxva_data;
         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             = current - dxva_data;
         dsc2->NumMBsInBuffer       = 0;

         type = DXVA2_SliceControlBufferType;
     }
 #endif

     slice_data = ctx_pic->slice_short;
     slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short);

     av_assert0(((current - dxva_data) & 127) == 0);
     return ff_dxva2_commit_buffer(avctx, ctx, sc,
                                   type,
                                   slice_data, slice_size, 0);
 }


 static int dxva2_hevc_start_frame(AVCodecContext *avctx,
                                   av_unused const uint8_t *buffer,
                                   av_unused uint32_t size)
 {
     const HEVCContext *h = avctx->priv_data;
     AVDXVAContext *ctx = avctx->hwaccel_context;
     struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;

     if (DXVA_CONTEXT_DECODER(avctx, ctx) == NULL ||
         DXVA_CONTEXT_CFG(avctx, ctx) == NULL ||
         DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
         return -1;
     av_assert0(ctx_pic);

     /* Fill up DXVA_PicParams_HEVC */
     fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp);

     /* Fill up DXVA_Qmatrix_HEVC */
     fill_scaling_lists(ctx, h, &ctx_pic->qm);

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

 static int dxva2_hevc_decode_slice(AVCodecContext *avctx,
                                    const uint8_t *buffer,
                                    uint32_t size)
 {
     const HEVCContext *h = avctx->priv_data;
     const HEVCFrame *current_picture = h->ref;
     struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
     unsigned position;

     if (ctx_pic->slice_count >= MAX_SLICES)
         return -1;

     if (!ctx_pic->bitstream)
         ctx_pic->bitstream = buffer;
     ctx_pic->bitstream_size += size;

     position = buffer - ctx_pic->bitstream;
     fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count], position, size);
     ctx_pic->slice_count++;

     return 0;
 }

 static int dxva2_hevc_end_frame(AVCodecContext *avctx)
 {
     HEVCContext *h = avctx->priv_data;
     struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;
     int scale = ctx_pic->pp.dwCodingParamToolFlags & 1;
     int ret;

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

     ret = ff_dxva2_common_end_frame(avctx, h->ref->frame,
                                     &ctx_pic->pp, sizeof(ctx_pic->pp),
                                     scale ? &ctx_pic->qm : NULL, scale ? sizeof(ctx_pic->qm) : 0,
                                     commit_bitstream_and_slice_buffer);
     return ret;
 }

 #if CONFIG_HEVC_DXVA2_HWACCEL
 AVHWAccel ff_hevc_dxva2_hwaccel = {
     .name           = "hevc_dxva2",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_HEVC,
     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
     .start_frame    = dxva2_hevc_start_frame,
     .decode_slice   = dxva2_hevc_decode_slice,
     .end_frame      = dxva2_hevc_end_frame,
     .frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
 };
 #endif

 #if CONFIG_HEVC_D3D11VA_HWACCEL
 AVHWAccel ff_hevc_d3d11va_hwaccel = {
     .name           = "hevc_d3d11va",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_HEVC,
     .pix_fmt        = AV_PIX_FMT_D3D11VA_VLD,
     .start_frame    = dxva2_hevc_start_frame,
     .decode_slice   = dxva2_hevc_decode_slice,
     .end_frame      = dxva2_hevc_end_frame,
     .frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
 };
 #endif
	/*
	* DXVA2 HEVC HW acceleration.
	*
	* copyright (c) 2014 - 2015 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 "libavutil/avassert.h"

	#include "hevc.h"

	// The headers above may include w32threads.h, which uses the original
	// _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
	// potentially newer version.
	#include "dxva2_internal.h"

	#define MAX_SLICES 256

	struct hevc_dxva2_picture_context {
	DXVA_PicParams_HEVC pp;
	DXVA_Qmatrix_HEVC qm;
	unsigned slice_count;
	DXVA_Slice_HEVC_Short slice_short[MAX_SLICES];
	const uint8_t *bitstream;
	unsigned bitstream_size;
	};

	static void fill_picture_entry(DXVA_PicEntry_HEVC *pic,
	unsigned index, unsigned flag)
	{
	av_assert0((index & 0x7f) == index && (flag & 0x01) == flag);
	pic->bPicEntry = index \| (flag << 7);
	}

	static int get_refpic_index(const DXVA_PicParams_HEVC *pp, int surface_index)
	{
	int i;
	for (i = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
	if ((pp->RefPicList[i].bPicEntry & 0x7f) == surface_index)
	return i;
	}
	return 0xff;
	}

	static void fill_picture_parameters(const AVCodecContext avctx, AVDXVAContext ctx, const HEVCContext *h,
	DXVA_PicParams_HEVC *pp)
	{
	const HEVCFrame *current_picture = h->ref;
	const HEVCSPS *sps = h->ps.sps;
	const HEVCPPS *pps = h->ps.pps;
	int i, j;

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

	pp->PicWidthInMinCbsY = sps->min_cb_width;
	pp->PicHeightInMinCbsY = sps->min_cb_height;

	pp->wFormatAndSequenceInfoFlags = (sps->chroma_format_idc << 0) \|
	(sps->separate_colour_plane_flag << 2) \|
	((sps->bit_depth - 8) << 3) \|
	((sps->bit_depth - 8) << 6) \|
	((sps->log2_max_poc_lsb - 4) << 9) \|
	(0 << 13) \|
	(0 << 14) \|
	(0 << 15);

	fill_picture_entry(&pp->CurrPic, ff_dxva2_get_surface_index(avctx, ctx, current_picture->frame), 0);

	pp->sps_max_dec_pic_buffering_minus1 = sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering - 1;
	pp->log2_min_luma_coding_block_size_minus3 = sps->log2_min_cb_size - 3;
	pp->log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size;
	pp->log2_min_transform_block_size_minus2 = sps->log2_min_tb_size - 2;
	pp->log2_diff_max_min_transform_block_size = sps->log2_max_trafo_size - sps->log2_min_tb_size;
	pp->max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter;
	pp->max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra;
	pp->num_short_term_ref_pic_sets = sps->nb_st_rps;
	pp->num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps;

	pp->num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active - 1;
	pp->num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active - 1;
	pp->init_qp_minus26 = pps->pic_init_qp_minus26;

	if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) {
	pp->ucNumDeltaPocsOfRefRpsIdx = h->sh.short_term_rps->rps_idx_num_delta_pocs;
	pp->wNumBitsForShortTermRPSInSlice = h->sh.short_term_ref_pic_set_size;
	}

	pp->dwCodingParamToolFlags = (sps->scaling_list_enable_flag << 0) \|
	(sps->amp_enabled_flag << 1) \|
	(sps->sao_enabled << 2) \|
	(sps->pcm_enabled_flag << 3) \|
	((sps->pcm_enabled_flag ? (sps->pcm.bit_depth - 1) : 0) << 4) \|
	((sps->pcm_enabled_flag ? (sps->pcm.bit_depth_chroma - 1) : 0) << 8) \|
	((sps->pcm_enabled_flag ? (sps->pcm.log2_min_pcm_cb_size - 3) : 0) << 12) \|
	((sps->pcm_enabled_flag ? (sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size) : 0) << 14) \|
	(sps->pcm.loop_filter_disable_flag << 16) \|
	(sps->long_term_ref_pics_present_flag << 17) \|
	(sps->sps_temporal_mvp_enabled_flag << 18) \|
	(sps->sps_strong_intra_smoothing_enable_flag << 19) \|
	(pps->dependent_slice_segments_enabled_flag << 20) \|
	(pps->output_flag_present_flag << 21) \|
	(pps->num_extra_slice_header_bits << 22) \|
	(pps->sign_data_hiding_flag << 25) \|
	(pps->cabac_init_present_flag << 26) \|
	(0 << 27);

	pp->dwCodingSettingPicturePropertyFlags = (pps->constrained_intra_pred_flag << 0) \|
	(pps->transform_skip_enabled_flag << 1) \|
	(pps->cu_qp_delta_enabled_flag << 2) \|
	(pps->pic_slice_level_chroma_qp_offsets_present_flag << 3) \|
	(pps->weighted_pred_flag << 4) \|
	(pps->weighted_bipred_flag << 5) \|
	(pps->transquant_bypass_enable_flag << 6) \|
	(pps->tiles_enabled_flag << 7) \|
	(pps->entropy_coding_sync_enabled_flag << 8) \|
	(pps->uniform_spacing_flag << 9) \|
	((pps->tiles_enabled_flag ? pps->loop_filter_across_tiles_enabled_flag : 0) << 10) \|
	(pps->seq_loop_filter_across_slices_enabled_flag << 11) \|
	(pps->deblocking_filter_override_enabled_flag << 12) \|
	(pps->disable_dbf << 13) \|
	(pps->lists_modification_present_flag << 14) \|
	(pps->slice_header_extension_present_flag << 15) \|
	(IS_IRAP(h) << 16) \|
	(IS_IDR(h) << 17) \|
	/* IntraPicFlag */
	(IS_IRAP(h) << 18) \|
	(0 << 19);
	pp->pps_cb_qp_offset = pps->cb_qp_offset;
	pp->pps_cr_qp_offset = pps->cr_qp_offset;
	if (pps->tiles_enabled_flag) {
	pp->num_tile_columns_minus1 = pps->num_tile_columns - 1;
	pp->num_tile_rows_minus1 = pps->num_tile_rows - 1;

	if (!pps->uniform_spacing_flag) {
	for (i = 0; i < pps->num_tile_columns; i++)
	pp->column_width_minus1[i] = pps->column_width[i] - 1;

	for (i = 0; i < pps->num_tile_rows; i++)
	pp->row_height_minus1[i] = pps->row_height[i] - 1;
	}
	}

	pp->diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth;
	pp->pps_beta_offset_div2 = pps->beta_offset / 2;
	pp->pps_tc_offset_div2 = pps->tc_offset / 2;
	pp->log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2;
	pp->CurrPicOrderCntVal = h->poc;

	// fill RefPicList from the DPB
	for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefPicList); i++) {
	const HEVCFrame *frame = NULL;
	while (!frame && j < FF_ARRAY_ELEMS(h->DPB)) {
	if (&h->DPB[j] != current_picture && (h->DPB[j].flags & (HEVC_FRAME_FLAG_LONG_REF \| HEVC_FRAME_FLAG_SHORT_REF)))
	frame = &h->DPB[j];
	j++;
	}

	if (frame) {
	fill_picture_entry(&pp->RefPicList[i], ff_dxva2_get_surface_index(avctx, ctx, frame->frame), !!(frame->flags & HEVC_FRAME_FLAG_LONG_REF));
	pp->PicOrderCntValList[i] = frame->poc;
	} else {
	pp->RefPicList[i].bPicEntry = 0xff;
	pp->PicOrderCntValList[i] = 0;
	}
	}

	#define DO_REF_LIST(ref_idx, ref_list) { \
	const RefPicList *rpl = &h->rps[ref_idx]; \
	for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ref_list); i++) { \
	const HEVCFrame *frame = NULL; \
	while (!frame && j < rpl->nb_refs) \
	frame = rpl->ref[j++]; \
	if (frame) \
	pp->ref_list[i] = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, frame->frame)); \
	else \
	pp->ref_list[i] = 0xff; \
	} \
	}

	// Fill short term and long term lists
	DO_REF_LIST(ST_CURR_BEF, RefPicSetStCurrBefore);
	DO_REF_LIST(ST_CURR_AFT, RefPicSetStCurrAfter);
	DO_REF_LIST(LT_CURR, RefPicSetLtCurr);

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

	static void fill_scaling_lists(AVDXVAContext ctx, const HEVCContext h, DXVA_Qmatrix_HEVC *qm)
	{
	unsigned i, j, pos;
	const ScalingList *sl = h->ps.pps->scaling_list_data_present_flag ?
	&h->ps.pps->scaling_list : &h->ps.sps->scaling_list;

	memset(qm, 0, sizeof(*qm));
	for (i = 0; i < 6; i++) {
	for (j = 0; j < 16; j++) {
	pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j];
	qm->ucScalingLists0[i][j] = sl->sl[0][i][pos];
	}

	for (j = 0; j < 64; j++) {
	pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j];
	qm->ucScalingLists1[i][j] = sl->sl[1][i][pos];
	qm->ucScalingLists2[i][j] = sl->sl[2][i][pos];

	if (i < 2)
	qm->ucScalingLists3[i][j] = sl->sl[3][i * 3][pos];
	}

	qm->ucScalingListDCCoefSizeID2[i] = sl->sl_dc[0][i];
	if (i < 2)
	qm->ucScalingListDCCoefSizeID3[i] = sl->sl_dc[1][i * 3];
	}
	}

	static void fill_slice_short(DXVA_Slice_HEVC_Short *slice,
	unsigned position, unsigned size)
	{
	memset(slice, 0, sizeof(*slice));
	slice->BSNALunitDataLocation = position;
	slice->SliceBytesInBuffer = size;
	slice->wBadSliceChopping = 0;
	}

	static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
	DECODER_BUFFER_DESC *bs,
	DECODER_BUFFER_DESC *sc)
	{
	const HEVCContext *h = avctx->priv_data;
	AVDXVAContext *ctx = avctx->hwaccel_context;
	const HEVCFrame *current_picture = h->ref;
	struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
	DXVA_Slice_HEVC_Short *slice = NULL;
	void *dxva_data_ptr;
	uint8_t dxva_data, current, *end;
	unsigned dxva_size;
	void *slice_data;
	unsigned slice_size;
	unsigned padding;
	unsigned i;
	unsigned type;

	/* Create an annex B bitstream buffer with only slice NAL and finalize slice */
	#if CONFIG_D3D11VA
	if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
	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;
	current = dxva_data;
	end = dxva_data + dxva_size;

	for (i = 0; i < ctx_pic->slice_count; i++) {
	static const uint8_t start_code[] = { 0, 0, 1 };
	static const unsigned start_code_size = sizeof(start_code);
	unsigned position, size;

	slice = &ctx_pic->slice_short[i];

	position = slice->BSNALunitDataLocation;
	size = slice->SliceBytesInBuffer;
	if (start_code_size + size > end - current) {
	av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
	break;
	}

	slice->BSNALunitDataLocation = current - dxva_data;
	slice->SliceBytesInBuffer = start_code_size + size;

	memcpy(current, start_code, start_code_size);
	current += start_code_size;

	memcpy(current, &ctx_pic->bitstream[position], size);
	current += size;
	}
	padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
	if (slice && padding > 0) {
	memset(current, 0, padding);
	current += padding;

	slice->SliceBytesInBuffer += padding;
	}
	#if CONFIG_D3D11VA
	if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
	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 (i < ctx_pic->slice_count)
	return -1;

	#if CONFIG_D3D11VA
	if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
	D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
	memset(dsc11, 0, sizeof(*dsc11));
	dsc11->BufferType = type;
	dsc11->DataSize = current - dxva_data;
	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 = current - dxva_data;
	dsc2->NumMBsInBuffer = 0;

	type = DXVA2_SliceControlBufferType;
	}
	#endif

	slice_data = ctx_pic->slice_short;
	slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short);

	av_assert0(((current - dxva_data) & 127) == 0);
	return ff_dxva2_commit_buffer(avctx, ctx, sc,
	type,
	slice_data, slice_size, 0);
	}


	static int dxva2_hevc_start_frame(AVCodecContext *avctx,
	av_unused const uint8_t *buffer,
	av_unused uint32_t size)
	{
	const HEVCContext *h = avctx->priv_data;
	AVDXVAContext *ctx = avctx->hwaccel_context;
	struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;

	if (DXVA_CONTEXT_DECODER(avctx, ctx) == NULL \|\|
	DXVA_CONTEXT_CFG(avctx, ctx) == NULL \|\|
	DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
	return -1;
	av_assert0(ctx_pic);

	/* Fill up DXVA_PicParams_HEVC */
	fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp);

	/* Fill up DXVA_Qmatrix_HEVC */
	fill_scaling_lists(ctx, h, &ctx_pic->qm);

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

	static int dxva2_hevc_decode_slice(AVCodecContext *avctx,
	const uint8_t *buffer,
	uint32_t size)
	{
	const HEVCContext *h = avctx->priv_data;
	const HEVCFrame *current_picture = h->ref;
	struct hevc_dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
	unsigned position;

	if (ctx_pic->slice_count >= MAX_SLICES)
	return -1;

	if (!ctx_pic->bitstream)
	ctx_pic->bitstream = buffer;
	ctx_pic->bitstream_size += size;

	position = buffer - ctx_pic->bitstream;
	fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count], position, size);
	ctx_pic->slice_count++;

	return 0;
	}

	static int dxva2_hevc_end_frame(AVCodecContext *avctx)
	{
	HEVCContext *h = avctx->priv_data;
	struct hevc_dxva2_picture_context *ctx_pic = h->ref->hwaccel_picture_private;
	int scale = ctx_pic->pp.dwCodingParamToolFlags & 1;
	int ret;

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

	ret = ff_dxva2_common_end_frame(avctx, h->ref->frame,
	&ctx_pic->pp, sizeof(ctx_pic->pp),
	scale ? &ctx_pic->qm : NULL, scale ? sizeof(ctx_pic->qm) : 0,
	commit_bitstream_and_slice_buffer);
	return ret;
	}

	#if CONFIG_HEVC_DXVA2_HWACCEL
	AVHWAccel ff_hevc_dxva2_hwaccel = {
	.name = "hevc_dxva2",
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_HEVC,
	.pix_fmt = AV_PIX_FMT_DXVA2_VLD,
	.start_frame = dxva2_hevc_start_frame,
	.decode_slice = dxva2_hevc_decode_slice,
	.end_frame = dxva2_hevc_end_frame,
	.frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
	};
	#endif

	#if CONFIG_HEVC_D3D11VA_HWACCEL
	AVHWAccel ff_hevc_d3d11va_hwaccel = {
	.name = "hevc_d3d11va",
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_HEVC,
	.pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
	.start_frame = dxva2_hevc_start_frame,
	.decode_slice = dxva2_hevc_decode_slice,
	.end_frame = dxva2_hevc_end_frame,
	.frame_priv_data_size = sizeof(struct hevc_dxva2_picture_context),
	};
	#endif