text: /**************************************************************************
   *
   * Copyright 2010 Thomas Balling Sørensen.
   * All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sub license, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice (including the
   * next paragraph) shall be included in all copies or substantial portions
   * of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
   * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
   * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   **************************************************************************/
  
  #include "util/u_memory.h"
  #include "util/u_math.h"
  #include "util/u_debug.h"
  #include "util/u_video.h"
  
  #include "vl/vl_vlc.h"
  
  #include "vdpau_private.h"
  
  /**
   * Create a VdpDecoder.
   */
  VdpStatus
  vlVdpDecoderCreate(VdpDevice device,
                     VdpDecoderProfile profile,
                     uint32_t width, uint32_t height,
                     uint32_t max_references,
                     VdpDecoder *decoder)
  {
     struct pipe_video_codec templat = {};
     struct pipe_context *pipe;
     struct pipe_screen *screen;
     vlVdpDevice *dev;
     vlVdpDecoder *vldecoder;
     VdpStatus ret;
     bool supported;
     uint32_t maxwidth, maxheight;
  
     if (!decoder)
        return VDP_STATUS_INVALID_POINTER;
     *decoder = 0;
  
     if (!(width && height))
        return VDP_STATUS_INVALID_VALUE;
  
     templat.profile = ProfileToPipe(profile);
     if (templat.profile == PIPE_VIDEO_PROFILE_UNKNOWN)
        return VDP_STATUS_INVALID_DECODER_PROFILE;
  
     dev = vlGetDataHTAB(device);
     if (!dev)
        return VDP_STATUS_INVALID_HANDLE;
  
     pipe = dev->context;
     screen = dev->vscreen->pscreen;
  
     mtx_lock(&dev->mutex);
  
     supported = screen->get_video_param
     (
        screen,
        templat.profile,
        PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
        PIPE_VIDEO_CAP_SUPPORTED
     );
     if (!supported) {
        mtx_unlock(&dev->mutex);
        return VDP_STATUS_INVALID_DECODER_PROFILE;
     }
  
     maxwidth = screen->get_video_param
     (
        screen,
        templat.profile,
        PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
        PIPE_VIDEO_CAP_MAX_WIDTH
     );
     maxheight = screen->get_video_param
     (
        screen,
        templat.profile,
        PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
        PIPE_VIDEO_CAP_MAX_HEIGHT
     );
     if (width > maxwidth || height > maxheight) {
        mtx_unlock(&dev->mutex);
        return VDP_STATUS_INVALID_SIZE;
     }
  
     vldecoder = CALLOC(1,sizeof(vlVdpDecoder));
     if (!vldecoder) {
        mtx_unlock(&dev->mutex);
        return VDP_STATUS_RESOURCES;
     }
  
     DeviceReference(&vldecoder->device, dev);
  
     templat.entrypoint = PIPE_VIDEO_ENTRYPOINT_BITSTREAM;
     templat.chroma_format = PIPE_VIDEO_CHROMA_FORMAT_420;
     templat.width = width;
     templat.height = height;
     templat.max_references = max_references;
  
     if (u_reduce_video_profile(templat.profile) ==
         PIPE_VIDEO_FORMAT_MPEG4_AVC)
        templat.level = u_get_h264_level(templat.width, templat.height,
                              &templat.max_references);
  
     vldecoder->decoder = pipe->create_video_codec(pipe, &templat);
  
     if (!vldecoder->decoder) {
        ret = VDP_STATUS_ERROR;
        goto error_decoder;
     }
  
     *decoder = vlAddDataHTAB(vldecoder);
     if (*decoder == 0) {
        ret = VDP_STATUS_ERROR;
        goto error_handle;
     }
  
     (void) mtx_init(&vldecoder->mutex, mtx_plain);
     mtx_unlock(&dev->mutex);
  
     return VDP_STATUS_OK;
  
  error_handle:
     vldecoder->decoder->destroy(vldecoder->decoder);
  
  error_decoder:
     mtx_unlock(&dev->mutex);
     DeviceReference(&vldecoder->device, NULL);
     FREE(vldecoder);
     return ret;
  }
  
  /**
   * Destroy a VdpDecoder.
   */
  VdpStatus
  vlVdpDecoderDestroy(VdpDecoder decoder)
  {
     vlVdpDecoder *vldecoder;
  
     vldecoder = (vlVdpDecoder *)vlGetDataHTAB(decoder);
     if (!vldecoder)
        return VDP_STATUS_INVALID_HANDLE;
  
     mtx_lock(&vldecoder->mutex);
     vldecoder->decoder->destroy(vldecoder->decoder);
     mtx_unlock(&vldecoder->mutex);
     mtx_destroy(&vldecoder->mutex);
  
     vlRemoveDataHTAB(decoder);
     DeviceReference(&vldecoder->device, NULL);
     FREE(vldecoder);
  
     return VDP_STATUS_OK;
  }
  
  /**
   * Retrieve the parameters used to create a VdpDecoder.
   */
  VdpStatus
  vlVdpDecoderGetParameters(VdpDecoder decoder,
                            VdpDecoderProfile *profile,
                            uint32_t *width,
                            uint32_t *height)
  {
     vlVdpDecoder *vldecoder;
  
     vldecoder = (vlVdpDecoder *)vlGetDataHTAB(decoder);
     if (!vldecoder)
        return VDP_STATUS_INVALID_HANDLE;
  
     *profile = PipeToProfile(vldecoder->decoder->profile);
     *width = vldecoder->decoder->width;
     *height = vldecoder->decoder->height;
  
     return VDP_STATUS_OK;
  }
  
  static VdpStatus
  vlVdpGetReferenceFrame(VdpVideoSurface handle, struct pipe_video_buffer **ref_frame)
  {
     vlVdpSurface *surface;
  
     /* if surfaces equals VDP_STATUS_INVALID_HANDLE, they are not used */
     if (handle ==  VDP_INVALID_HANDLE) {
        *ref_frame = NULL;
        return VDP_STATUS_OK;
     }
  
     surface = vlGetDataHTAB(handle);
     if (!surface)
        return VDP_STATUS_INVALID_HANDLE;
  
     *ref_frame = surface->video_buffer;
     if (!*ref_frame)
           return VDP_STATUS_INVALID_HANDLE;
  
     return VDP_STATUS_OK;
  }
  
  /**
   * Decode a mpeg 1/2 video.
   */
  static VdpStatus
  vlVdpDecoderRenderMpeg12(struct pipe_mpeg12_picture_desc *picture,
                           VdpPictureInfoMPEG1Or2 *picture_info)
  {
     VdpStatus r;
  
     VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Decoding MPEG12\n");
  
     r = vlVdpGetReferenceFrame(picture_info->forward_reference, &picture->ref[0]);
     if (r != VDP_STATUS_OK)
        return r;
  
     r = vlVdpGetReferenceFrame(picture_info->backward_reference, &picture->ref[1]);
     if (r != VDP_STATUS_OK)
        return r;
  
     picture->picture_coding_type = picture_info->picture_coding_type;
     picture->picture_structure = picture_info->picture_structure;
     picture->frame_pred_frame_dct = picture_info->frame_pred_frame_dct;
     picture->q_scale_type = picture_info->q_scale_type;
     picture->alternate_scan = picture_info->alternate_scan;
     picture->intra_vlc_format = picture_info->intra_vlc_format;
     picture->concealment_motion_vectors = picture_info->concealment_motion_vectors;
     picture->intra_dc_precision = picture_info->intra_dc_precision;
     picture->f_code[0][0] = picture_info->f_code[0][0] - 1;
     picture->f_code[0][1] = picture_info->f_code[0][1] - 1;
     picture->f_code[1][0] = picture_info->f_code[1][0] - 1;
     picture->f_code[1][1] = picture_info->f_code[1][1] - 1;
     picture->num_slices = picture_info->slice_count;
     picture->top_field_first = picture_info->top_field_first;
     picture->full_pel_forward_vector = picture_info->full_pel_forward_vector;
     picture->full_pel_backward_vector = picture_info->full_pel_backward_vector;
     picture->intra_matrix = picture_info->intra_quantizer_matrix;
     picture->non_intra_matrix = picture_info->non_intra_quantizer_matrix;
  
     return VDP_STATUS_OK;
  }
  
  /**
   * Decode a mpeg 4 video.
   */
  static VdpStatus
  vlVdpDecoderRenderMpeg4(struct pipe_mpeg4_picture_desc *picture,
                          VdpPictureInfoMPEG4Part2 *picture_info)
  {
     VdpStatus r;
     unsigned i;
  
     VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Decoding MPEG4\n");
  
     r = vlVdpGetReferenceFrame(picture_info->forward_reference, &picture->ref[0]);
     if (r != VDP_STATUS_OK)
        return r;
  
     r = vlVdpGetReferenceFrame(picture_info->backward_reference, &picture->ref[1]);
     if (r != VDP_STATUS_OK)
        return r;
  
     for (i = 0; i < 2; ++i) {
        picture->trd[i] = picture_info->trd[i];
        picture->trb[i] = picture_info->trb[i];
     }
     picture->vop_time_increment_resolution = picture_info->vop_time_increment_resolution;
     picture->vop_coding_type = picture_info->vop_coding_type;
     picture->vop_fcode_forward = picture_info->vop_fcode_forward;
     picture->vop_fcode_backward = picture_info->vop_fcode_backward;
     picture->resync_marker_disable = picture_info->resync_marker_disable;
     picture->interlaced = picture_info->interlaced;
     picture->quant_type = picture_info->quant_type;
     picture->quarter_sample = picture_info->quarter_sample;
     picture->short_video_header = picture_info->short_video_header;
     picture->rounding_control = picture_info->rounding_control;
     picture->alternate_vertical_scan_flag = picture_info->alternate_vertical_scan_flag;
     picture->top_field_first = picture_info->top_field_first;
     picture->intra_matrix = picture_info->intra_quantizer_matrix;
     picture->non_intra_matrix = picture_info->non_intra_quantizer_matrix;
  
     return VDP_STATUS_OK;
  }
  
  static VdpStatus
  vlVdpDecoderRenderVC1(struct pipe_vc1_picture_desc *picture,
                        VdpPictureInfoVC1 *picture_info)
  {
     VdpStatus r;
  
     VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Decoding VC-1\n");
  
     r = vlVdpGetReferenceFrame(picture_info->forward_reference, &picture->ref[0]);
     if (r != VDP_STATUS_OK)
        return r;
  
     r = vlVdpGetReferenceFrame(picture_info->backward_reference, &picture->ref[1]);
     if (r != VDP_STATUS_OK)
        return r;
  
     picture->slice_count = picture_info->slice_count;
     picture->picture_type = picture_info->picture_type;
     picture->frame_coding_mode = picture_info->frame_coding_mode;
     picture->postprocflag = picture_info->postprocflag;
     picture->pulldown = picture_info->pulldown;
     picture->interlace = picture_info->interlace;
     picture->tfcntrflag = picture_info->tfcntrflag;
     picture->finterpflag = picture_info->finterpflag;
     picture->psf = picture_info->psf;
     picture->dquant = picture_info->dquant;
     picture->panscan_flag = picture_info->panscan_flag;
     picture->refdist_flag = picture_info->refdist_flag;
     picture->quantizer = picture_info->quantizer;
     picture->extended_mv = picture_info->extended_mv;
     picture->extended_dmv = picture_info->extended_dmv;
     picture->overlap = picture_info->overlap;
     picture->vstransform = picture_info->vstransform;
     picture->loopfilter = picture_info->loopfilter;
     picture->fastuvmc = picture_info->fastuvmc;
     picture->range_mapy_flag = picture_info->range_mapy_flag;
     picture->range_mapy = picture_info->range_mapy;
     picture->range_mapuv_flag = picture_info->range_mapuv_flag;
     picture->range_mapuv = picture_info->range_mapuv;
     picture->multires = picture_info->multires;
     picture->syncmarker = picture_info->syncmarker;
     picture->rangered = picture_info->rangered;
     picture->maxbframes = picture_info->maxbframes;
     picture->deblockEnable = picture_info->deblockEnable;
     picture->pquant = picture_info->pquant;
  
     return VDP_STATUS_OK;
  }
  
  static VdpStatus
  vlVdpDecoderRenderH264(struct pipe_h264_picture_desc *picture,
                         VdpPictureInfoH264 *picture_info)
  {
     unsigned i;
  
     VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Decoding H264\n");
  
     picture->pps->sps->mb_adaptive_frame_field_flag = picture_info->mb_adaptive_frame_field_flag;
     picture->pps->sps->frame_mbs_only_flag = picture_info->frame_mbs_only_flag;
     picture->pps->sps->log2_max_frame_num_minus4 = picture_info->log2_max_frame_num_minus4;
     picture->pps->sps->pic_order_cnt_type = picture_info->pic_order_cnt_type;
     picture->pps->sps->log2_max_pic_order_cnt_lsb_minus4 = picture_info->log2_max_pic_order_cnt_lsb_minus4;
     picture->pps->sps->delta_pic_order_always_zero_flag = picture_info->delta_pic_order_always_zero_flag;
     picture->pps->sps->direct_8x8_inference_flag = picture_info->direct_8x8_inference_flag;
  
     picture->pps->transform_8x8_mode_flag = picture_info->transform_8x8_mode_flag;
     picture->pps->chroma_qp_index_offset = picture_info->chroma_qp_index_offset;
     picture->pps->second_chroma_qp_index_offset = picture_info->second_chroma_qp_index_offset;
     picture->pps->pic_init_qp_minus26 = picture_info->pic_init_qp_minus26;
     picture->pps->entropy_coding_mode_flag = picture_info->entropy_coding_mode_flag;
     picture->pps->deblocking_filter_control_present_flag = picture_info->deblocking_filter_control_present_flag;
     picture->pps->redundant_pic_cnt_present_flag = picture_info->redundant_pic_cnt_present_flag;
     picture->pps->constrained_intra_pred_flag = picture_info->constrained_intra_pred_flag;
     picture->pps->weighted_pred_flag = picture_info->weighted_pred_flag;
     picture->pps->weighted_bipred_idc = picture_info->weighted_bipred_idc;
     picture->pps->bottom_field_pic_order_in_frame_present_flag = picture_info->pic_order_present_flag;
     memcpy(picture->pps->ScalingList4x4, picture_info->scaling_lists_4x4, 6*16);
     memcpy(picture->pps->ScalingList8x8, picture_info->scaling_lists_8x8, 2*64);
  
     picture->slice_count = picture_info->slice_count;
     picture->field_order_cnt[0] = picture_info->field_order_cnt[0];
     picture->field_order_cnt[1] = picture_info->field_order_cnt[1];
     picture->is_reference = picture_info->is_reference;
     picture->frame_num = picture_info->frame_num;
     picture->field_pic_flag = picture_info->field_pic_flag;
     picture->bottom_field_flag = picture_info->bottom_field_flag;
     picture->num_ref_frames = picture_info->num_ref_frames;
  
     picture->num_ref_idx_l0_active_minus1 = picture_info->num_ref_idx_l0_active_minus1;
     picture->num_ref_idx_l1_active_minus1 = picture_info->num_ref_idx_l1_active_minus1;
  
     for (i = 0; i < 16; ++i) {
        VdpStatus ret = vlVdpGetReferenceFrame
        (
           picture_info->referenceFrames[i].surface,
           &picture->ref[i]
        );
        if (ret != VDP_STATUS_OK)
           return ret;
  
        picture->is_long_term[i] = picture_info->referenceFrames[i].is_long_term;
        picture->top_is_reference[i] = picture_info->referenceFrames[i].top_is_reference;
        picture->bottom_is_reference[i] = picture_info->referenceFrames[i].bottom_is_reference;
        picture->field_order_cnt_list[i][0] = picture_info->referenceFrames[i].field_order_cnt[0];
        picture->field_order_cnt_list[i][1] = picture_info->referenceFrames[i].field_order_cnt[1];
        picture->frame_num_list[i] = picture_info->referenceFrames[i].frame_idx;
     }
  
     return VDP_STATUS_OK;
  }
  
  static VdpStatus
  vlVdpDecoderRenderH265(struct pipe_h265_picture_desc *picture,
                         VdpPictureInfoHEVC *picture_info)
  {
     unsigned i;
  
     picture->pps->sps->chroma_format_idc = picture_info->chroma_format_idc;
     picture->pps->sps->separate_colour_plane_flag = picture_info->separate_colour_plane_flag;
     picture->pps->sps->pic_width_in_luma_samples = picture_info->pic_width_in_luma_samples;
     picture->pps->sps->pic_height_in_luma_samples = picture_info->pic_height_in_luma_samples;
     picture->pps->sps->bit_depth_luma_minus8 = picture_info->bit_depth_luma_minus8;
     picture->pps->sps->bit_depth_chroma_minus8 = picture_info->bit_depth_chroma_minus8;
     picture->pps->sps->log2_max_pic_order_cnt_lsb_minus4 = picture_info->log2_max_pic_order_cnt_lsb_minus4;
     picture->pps->sps->sps_max_dec_pic_buffering_minus1 = picture_info->sps_max_dec_pic_buffering_minus1;
     picture->pps->sps->log2_min_luma_coding_block_size_minus3 = picture_info->log2_min_luma_coding_block_size_minus3;
     picture->pps->sps->log2_diff_max_min_luma_coding_block_size = picture_info->log2_diff_max_min_luma_coding_block_size;
     picture->pps->sps->log2_min_transform_block_size_minus2 = picture_info->log2_min_transform_block_size_minus2;
     picture->pps->sps->log2_diff_max_min_transform_block_size = picture_info->log2_diff_max_min_transform_block_size;
     picture->pps->sps->max_transform_hierarchy_depth_inter = picture_info->max_transform_hierarchy_depth_inter;
     picture->pps->sps->max_transform_hierarchy_depth_intra = picture_info->max_transform_hierarchy_depth_intra;
     picture->pps->sps->scaling_list_enabled_flag = picture_info->scaling_list_enabled_flag;
     memcpy(picture->pps->sps->ScalingList4x4, picture_info->ScalingList4x4, 6*16);
     memcpy(picture->pps->sps->ScalingList8x8, picture_info->ScalingList8x8, 6*64);
     memcpy(picture->pps->sps->ScalingList16x16, picture_info->ScalingList16x16, 6*64);
     memcpy(picture->pps->sps->ScalingList32x32, picture_info->ScalingList32x32, 2*64);
     memcpy(picture->pps->sps->ScalingListDCCoeff16x16, picture_info->ScalingListDCCoeff16x16, 6);
     memcpy(picture->pps->sps->ScalingListDCCoeff32x32, picture_info->ScalingListDCCoeff32x32, 2);
     picture->pps->sps->amp_enabled_flag = picture_info->amp_enabled_flag;
     picture->pps->sps->sample_adaptive_offset_enabled_flag = picture_info->sample_adaptive_offset_enabled_flag;
     picture->pps->sps->pcm_enabled_flag = picture_info->pcm_enabled_flag;
     picture->pps->sps->pcm_sample_bit_depth_luma_minus1 = picture_info->pcm_sample_bit_depth_luma_minus1;
     picture->pps->sps->pcm_sample_bit_depth_chroma_minus1 = picture_info->pcm_sample_bit_depth_chroma_minus1;
     picture->pps->sps->log2_min_pcm_luma_coding_block_size_minus3 = picture_info->log2_min_pcm_luma_coding_block_size_minus3;
     picture->pps->sps->log2_diff_max_min_pcm_luma_coding_block_size = picture_info->log2_diff_max_min_pcm_luma_coding_block_size;
     picture->pps->sps->pcm_loop_filter_disabled_flag = picture_info->pcm_loop_filter_disabled_flag;
     picture->pps->sps->num_short_term_ref_pic_sets = picture_info->num_short_term_ref_pic_sets;
     picture->pps->sps->long_term_ref_pics_present_flag = picture_info->long_term_ref_pics_present_flag;
     picture->pps->sps->num_long_term_ref_pics_sps = picture_info->num_long_term_ref_pics_sps;
     picture->pps->sps->sps_temporal_mvp_enabled_flag = picture_info->sps_temporal_mvp_enabled_flag;
     picture->pps->sps->strong_intra_smoothing_enabled_flag = picture_info->strong_intra_smoothing_enabled_flag;
  
     picture->pps->dependent_slice_segments_enabled_flag = picture_info->dependent_slice_segments_enabled_flag;
     picture->pps->output_flag_present_flag = picture_info->output_flag_present_flag;
     picture->pps->num_extra_slice_header_bits = picture_info->num_extra_slice_header_bits;
     picture->pps->sign_data_hiding_enabled_flag = picture_info->sign_data_hiding_enabled_flag;
     picture->pps->cabac_init_present_flag = picture_info->cabac_init_present_flag;
     picture->pps->num_ref_idx_l0_default_active_minus1 = picture_info->num_ref_idx_l0_default_active_minus1;
     picture->pps->num_ref_idx_l1_default_active_minus1 = picture_info->num_ref_idx_l1_default_active_minus1;
     picture->pps->init_qp_minus26 = picture_info->init_qp_minus26;
     picture->pps->constrained_intra_pred_flag = picture_info->constrained_intra_pred_flag;
     picture->pps->transform_skip_enabled_flag = picture_info->transform_skip_enabled_flag;
     picture->pps->cu_qp_delta_enabled_flag = picture_info->cu_qp_delta_enabled_flag;
     picture->pps->diff_cu_qp_delta_depth = picture_info->diff_cu_qp_delta_depth;
     picture->pps->pps_cb_qp_offset = picture_info->pps_cb_qp_offset;
     picture->pps->pps_cr_qp_offset = picture_info->pps_cr_qp_offset;
     picture->pps->pps_slice_chroma_qp_offsets_present_flag = picture_info->pps_slice_chroma_qp_offsets_present_flag;
     picture->pps->weighted_pred_flag = picture_info->weighted_pred_flag;
     picture->pps->weighted_bipred_flag = picture_info->weighted_bipred_flag;
     picture->pps->transquant_bypass_enabled_flag = picture_info->transquant_bypass_enabled_flag;
     picture->pps->tiles_enabled_flag = picture_info->tiles_enabled_flag;
     picture->pps->entropy_coding_sync_enabled_flag = picture_info->entropy_coding_sync_enabled_flag;
     picture->pps->num_tile_columns_minus1 = picture_info->num_tile_columns_minus1;
     picture->pps->num_tile_rows_minus1 = picture_info->num_tile_rows_minus1;
     picture->pps->uniform_spacing_flag = picture_info->uniform_spacing_flag;
     memcpy(picture->pps->column_width_minus1, picture_info->column_width_minus1, 20 * 2);
     memcpy(picture->pps->row_height_minus1, picture_info->row_height_minus1, 22 * 2);
     picture->pps->loop_filter_across_tiles_enabled_flag = picture_info->loop_filter_across_tiles_enabled_flag;
     picture->pps->pps_loop_filter_across_slices_enabled_flag = picture_info->pps_loop_filter_across_slices_enabled_flag;
     picture->pps->deblocking_filter_control_present_flag = picture_info->deblocking_filter_control_present_flag;
     picture->pps->deblocking_filter_override_enabled_flag = picture_info->deblocking_filter_override_enabled_flag;
     picture->pps->pps_deblocking_filter_disabled_flag = picture_info->pps_deblocking_filter_disabled_flag;
     picture->pps->pps_beta_offset_div2 = picture_info->pps_beta_offset_div2;
     picture->pps->pps_tc_offset_div2 = picture_info->pps_tc_offset_div2;
     picture->pps->lists_modification_present_flag = picture_info->lists_modification_present_flag;
     picture->pps->log2_parallel_merge_level_minus2 = picture_info->log2_parallel_merge_level_minus2;
     picture->pps->slice_segment_header_extension_present_flag = picture_info->slice_segment_header_extension_present_flag;
  
     picture->IDRPicFlag = picture_info->IDRPicFlag;
     picture->RAPPicFlag = picture_info->RAPPicFlag;
     picture->CurrRpsIdx = picture_info->CurrRpsIdx;
     picture->NumPocTotalCurr = picture_info->NumPocTotalCurr;
     picture->NumDeltaPocsOfRefRpsIdx = picture_info->NumDeltaPocsOfRefRpsIdx;
     picture->NumShortTermPictureSliceHeaderBits = picture_info->NumShortTermPictureSliceHeaderBits;
     picture->NumLongTermPictureSliceHeaderBits = picture_info->NumLongTermPictureSliceHeaderBits;
     picture->CurrPicOrderCntVal = picture_info->CurrPicOrderCntVal;
  
     for (i = 0; i < 16; ++i) {
        VdpStatus ret = vlVdpGetReferenceFrame
        (
           picture_info->RefPics[i],
           &picture->ref[i]
        );
        if (ret != VDP_STATUS_OK)
           return ret;
  
        picture->PicOrderCntVal[i] = picture_info->PicOrderCntVal[i];
        picture->IsLongTerm[i] = picture_info->IsLongTerm[i];
     }
  
     picture->NumPocStCurrBefore = picture_info->NumPocStCurrBefore;
     picture->NumPocStCurrAfter = picture_info->NumPocStCurrAfter;
     picture->NumPocLtCurr = picture_info->NumPocLtCurr;
     memcpy(picture->RefPicSetStCurrBefore, picture_info->RefPicSetStCurrBefore, 8);
     memcpy(picture->RefPicSetStCurrAfter, picture_info->RefPicSetStCurrAfter, 8);
     memcpy(picture->RefPicSetLtCurr, picture_info->RefPicSetLtCurr, 8);
     picture->UseRefPicList = false;
  
     return VDP_STATUS_OK;
  }
  
  static void
  vlVdpDecoderFixVC1Startcode(uint32_t *num_buffers, const void *buffers[], unsigned sizes[])
  {
     static const uint8_t vc1_startcode[] = { 0x00, 0x00, 0x01, 0x0D };
     struct vl_vlc vlc;
     unsigned i;
  
     /* search the first 64 bytes for a startcode */
     vl_vlc_init(&vlc, *num_buffers, buffers, sizes);
     while (vl_vlc_search_byte(&vlc, 64*8, 0x00) && vl_vlc_bits_left(&vlc) >= 32) {
        uint32_t value = vl_vlc_peekbits(&vlc, 32);
        if (value == 0x0000010D ||
            value == 0x0000010C ||
            value == 0x0000010B)
           return;
        vl_vlc_eatbits(&vlc, 8);
     }
  
     /* none found, ok add one manually */
     VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Manually adding VC-1 startcode\n");
     for (i = *num_buffers; i > 0; --i) {
        buffers[i] = buffers[i - 1];
        sizes[i] = sizes[i - 1];
     }
     ++(*num_buffers);
     buffers[0] = vc1_startcode;
     sizes[0] = 4;
  }
  
  /**
   * Decode a compressed field/frame and render the result into a VdpVideoSurface.
   */
  VdpStatus
  vlVdpDecoderRender(VdpDecoder decoder,
                     VdpVideoSurface target,
                     VdpPictureInfo const *picture_info,
                     uint32_t bitstream_buffer_count,
                     VdpBitstreamBuffer const *bitstream_buffers)
  {
     const void * buffers[bitstream_buffer_count + 1];
     unsigned sizes[bitstream_buffer_count + 1];
     vlVdpDecoder *vldecoder;
     vlVdpSurface *vlsurf;
     VdpStatus ret;
     struct pipe_screen *screen;
     struct pipe_video_codec *dec;
     bool buffer_support[2];
     unsigned i;
     struct pipe_h264_sps sps_h264 = {};
     struct pipe_h264_pps pps_h264 = { &sps_h264 };
     struct pipe_h265_sps sps_h265 = {};
     struct pipe_h265_pps pps_h265 = { &sps_h265 };
     union {
        struct pipe_picture_desc base;
        struct pipe_mpeg12_picture_desc mpeg12;
        struct pipe_mpeg4_picture_desc mpeg4;
        struct pipe_vc1_picture_desc vc1;
        struct pipe_h264_picture_desc h264;
        struct pipe_h265_picture_desc h265;
     } desc;
  
     if (!(picture_info && bitstream_buffers))
        return VDP_STATUS_INVALID_POINTER;
  
     vldecoder = (vlVdpDecoder *)vlGetDataHTAB(decoder);
     if (!vldecoder)
        return VDP_STATUS_INVALID_HANDLE;
     dec = vldecoder->decoder;
     screen = dec->context->screen;
  
     vlsurf = (vlVdpSurface *)vlGetDataHTAB(target);
     if (!vlsurf)
        return VDP_STATUS_INVALID_HANDLE;
  
     if (vlsurf->device != vldecoder->device)
        return VDP_STATUS_HANDLE_DEVICE_MISMATCH;
  
     if (vlsurf->video_buffer != NULL && vlsurf->video_buffer->chroma_format != dec->chroma_format)
        // TODO: Recreate decoder with correct chroma
        return VDP_STATUS_INVALID_CHROMA_TYPE;
  
     buffer_support[0] = screen->get_video_param(screen, dec->profile, PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
                                                 PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE);
     buffer_support[1] = screen->get_video_param(screen, dec->profile, PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
                                                 PIPE_VIDEO_CAP_SUPPORTS_INTERLACED);
  
     if (vlsurf->video_buffer == NULL ||
         !screen->is_video_format_supported(screen, vlsurf->video_buffer->buffer_format,
                                            dec->profile, PIPE_VIDEO_ENTRYPOINT_BITSTREAM) ||
         !buffer_support[vlsurf->video_buffer->interlaced]) {
  
        mtx_lock(&vlsurf->device->mutex);
  
        /* destroy the old one */
        if (vlsurf->video_buffer)
           vlsurf->video_buffer->destroy(vlsurf->video_buffer);
  
        /* set the buffer format to the prefered one */
        vlsurf->templat.buffer_format = screen->get_video_param(screen, dec->profile, PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
                                                                PIPE_VIDEO_CAP_PREFERED_FORMAT);
  
        /* also set interlacing to decoders preferences */
        vlsurf->templat.interlaced = screen->get_video_param(screen, dec->profile, PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
                                                             PIPE_VIDEO_CAP_PREFERS_INTERLACED);
  
        /* and recreate the video buffer */
        vlsurf->video_buffer = dec->context->create_video_buffer(dec->context, &vlsurf->templat);
  
        /* still no luck? get me out of here... */
        if (!vlsurf->video_buffer) {
           mtx_unlock(&vlsurf->device->mutex);
           return VDP_STATUS_NO_IMPLEMENTATION;
        }
        vlVdpVideoSurfaceClear(vlsurf);
        mtx_unlock(&vlsurf->device->mutex);
     }
  
     for (i = 0; i < bitstream_buffer_count; ++i) {
        buffers[i] = bitstream_buffers[i].bitstream;
        sizes[i] = bitstream_buffers[i].bitstream_bytes;
     }
  
     memset(&desc, 0, sizeof(desc));
     desc.base.profile = dec->profile;
     switch (u_reduce_video_profile(dec->profile)) {
     case PIPE_VIDEO_FORMAT_MPEG12:
        ret = vlVdpDecoderRenderMpeg12(&desc.mpeg12, (VdpPictureInfoMPEG1Or2 *)picture_info);
        break;
     case PIPE_VIDEO_FORMAT_MPEG4:
        ret = vlVdpDecoderRenderMpeg4(&desc.mpeg4, (VdpPictureInfoMPEG4Part2 *)picture_info);
        break;
     case PIPE_VIDEO_FORMAT_VC1:
        if (dec->profile == PIPE_VIDEO_PROFILE_VC1_ADVANCED)
           vlVdpDecoderFixVC1Startcode(&bitstream_buffer_count, buffers, sizes);
        ret = vlVdpDecoderRenderVC1(&desc.vc1, (VdpPictureInfoVC1 *)picture_info);
        break;
     case PIPE_VIDEO_FORMAT_MPEG4_AVC:
        desc.h264.pps = &pps_h264;
        ret = vlVdpDecoderRenderH264(&desc.h264, (VdpPictureInfoH264 *)picture_info);
        break;
     case PIPE_VIDEO_FORMAT_HEVC:
        desc.h265.pps = &pps_h265;
        ret = vlVdpDecoderRenderH265(&desc.h265, (VdpPictureInfoHEVC *)picture_info);
        break;
     default:
        return VDP_STATUS_INVALID_DECODER_PROFILE;
     }
  
     if (ret != VDP_STATUS_OK)
        return ret;
  
     mtx_lock(&vldecoder->mutex);
     dec->begin_frame(dec, vlsurf->video_buffer, &desc.base);
     dec->decode_bitstream(dec, vlsurf->video_buffer, &desc.base, bitstream_buffer_count, buffers, sizes);
     dec->end_frame(dec, vlsurf->video_buffer, &desc.base);
     mtx_unlock(&vldecoder->mutex);
     return ret;
  }
  