| /* |
| * HEVC HW decode acceleration through VA API |
| * |
| * Copyright (C) 2015 Timo Rothenpieler <timo@rothenpieler.org> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <va/va.h> |
| #include <va/va_dec_hevc.h> |
| |
| #include "avcodec.h" |
| #include "hevcdec.h" |
| #include "hwaccel.h" |
| #include "vaapi_decode.h" |
| |
| typedef struct VAAPIDecodePictureHEVC { |
| VAPictureParameterBufferHEVC pic_param; |
| VASliceParameterBufferHEVC last_slice_param; |
| const uint8_t *last_buffer; |
| size_t last_size; |
| |
| VAAPIDecodePicture pic; |
| } VAAPIDecodePictureHEVC; |
| |
| static void init_vaapi_pic(VAPictureHEVC *va_pic) |
| { |
| va_pic->picture_id = VA_INVALID_ID; |
| va_pic->flags = VA_PICTURE_HEVC_INVALID; |
| va_pic->pic_order_cnt = 0; |
| } |
| |
| static void fill_vaapi_pic(VAPictureHEVC *va_pic, const HEVCFrame *pic, int rps_type) |
| { |
| va_pic->picture_id = ff_vaapi_get_surface_id(pic->frame); |
| va_pic->pic_order_cnt = pic->poc; |
| va_pic->flags = rps_type; |
| |
| if (pic->flags & HEVC_FRAME_FLAG_LONG_REF) |
| va_pic->flags |= VA_PICTURE_HEVC_LONG_TERM_REFERENCE; |
| |
| if (pic->frame->interlaced_frame) { |
| va_pic->flags |= VA_PICTURE_HEVC_FIELD_PIC; |
| |
| if (!pic->frame->top_field_first) |
| va_pic->flags |= VA_PICTURE_HEVC_BOTTOM_FIELD; |
| } |
| } |
| |
| static int find_frame_rps_type(const HEVCContext *h, const HEVCFrame *pic) |
| { |
| VASurfaceID pic_surf = ff_vaapi_get_surface_id(pic->frame); |
| int i; |
| |
| for (i = 0; i < h->rps[ST_CURR_BEF].nb_refs; i++) { |
| if (pic_surf == ff_vaapi_get_surface_id(h->rps[ST_CURR_BEF].ref[i]->frame)) |
| return VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE; |
| } |
| |
| for (i = 0; i < h->rps[ST_CURR_AFT].nb_refs; i++) { |
| if (pic_surf == ff_vaapi_get_surface_id(h->rps[ST_CURR_AFT].ref[i]->frame)) |
| return VA_PICTURE_HEVC_RPS_ST_CURR_AFTER; |
| } |
| |
| for (i = 0; i < h->rps[LT_CURR].nb_refs; i++) { |
| if (pic_surf == ff_vaapi_get_surface_id(h->rps[LT_CURR].ref[i]->frame)) |
| return VA_PICTURE_HEVC_RPS_LT_CURR; |
| } |
| |
| return 0; |
| } |
| |
| static void fill_vaapi_reference_frames(const HEVCContext *h, VAPictureParameterBufferHEVC *pp) |
| { |
| const HEVCFrame *current_picture = h->ref; |
| int i, j, rps_type; |
| |
| for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ReferenceFrames); 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++; |
| } |
| |
| init_vaapi_pic(&pp->ReferenceFrames[i]); |
| |
| if (frame) { |
| rps_type = find_frame_rps_type(h, frame); |
| fill_vaapi_pic(&pp->ReferenceFrames[i], frame, rps_type); |
| } |
| } |
| } |
| |
| static int vaapi_hevc_start_frame(AVCodecContext *avctx, |
| av_unused const uint8_t *buffer, |
| av_unused uint32_t size) |
| { |
| const HEVCContext *h = avctx->priv_data; |
| VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; |
| const HEVCSPS *sps = h->ps.sps; |
| const HEVCPPS *pps = h->ps.pps; |
| |
| const ScalingList *scaling_list = NULL; |
| int err, i; |
| |
| pic->pic.output_surface = ff_vaapi_get_surface_id(h->ref->frame); |
| |
| pic->pic_param = (VAPictureParameterBufferHEVC) { |
| .pic_fields.value = 0, |
| .slice_parsing_fields.value = 0, |
| .pic_width_in_luma_samples = sps->width, |
| .pic_height_in_luma_samples = sps->height, |
| .log2_min_luma_coding_block_size_minus3 = sps->log2_min_cb_size - 3, |
| .sps_max_dec_pic_buffering_minus1 = sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering - 1, |
| .log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size, |
| .log2_min_transform_block_size_minus2 = sps->log2_min_tb_size - 2, |
| .log2_diff_max_min_transform_block_size = sps->log2_max_trafo_size - sps->log2_min_tb_size, |
| .max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter, |
| .max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra, |
| .num_short_term_ref_pic_sets = sps->nb_st_rps, |
| .num_long_term_ref_pic_sps = sps->num_long_term_ref_pics_sps, |
| .num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active - 1, |
| .num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active - 1, |
| .init_qp_minus26 = pps->pic_init_qp_minus26, |
| .pps_cb_qp_offset = pps->cb_qp_offset, |
| .pps_cr_qp_offset = pps->cr_qp_offset, |
| .pcm_sample_bit_depth_luma_minus1 = sps->pcm.bit_depth - 1, |
| .pcm_sample_bit_depth_chroma_minus1 = sps->pcm.bit_depth_chroma - 1, |
| .log2_min_pcm_luma_coding_block_size_minus3 = sps->pcm.log2_min_pcm_cb_size - 3, |
| .log2_diff_max_min_pcm_luma_coding_block_size = sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size, |
| .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth, |
| .pps_beta_offset_div2 = pps->beta_offset / 2, |
| .pps_tc_offset_div2 = pps->tc_offset / 2, |
| .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2, |
| .bit_depth_luma_minus8 = sps->bit_depth - 8, |
| .bit_depth_chroma_minus8 = sps->bit_depth - 8, |
| .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4, |
| .num_extra_slice_header_bits = pps->num_extra_slice_header_bits, |
| .pic_fields.bits = { |
| .chroma_format_idc = sps->chroma_format_idc, |
| .tiles_enabled_flag = pps->tiles_enabled_flag, |
| .separate_colour_plane_flag = sps->separate_colour_plane_flag, |
| .pcm_enabled_flag = sps->pcm_enabled_flag, |
| .scaling_list_enabled_flag = sps->scaling_list_enable_flag, |
| .transform_skip_enabled_flag = pps->transform_skip_enabled_flag, |
| .amp_enabled_flag = sps->amp_enabled_flag, |
| .strong_intra_smoothing_enabled_flag = sps->sps_strong_intra_smoothing_enable_flag, |
| .sign_data_hiding_enabled_flag = pps->sign_data_hiding_flag, |
| .constrained_intra_pred_flag = pps->constrained_intra_pred_flag, |
| .cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag, |
| .weighted_pred_flag = pps->weighted_pred_flag, |
| .weighted_bipred_flag = pps->weighted_bipred_flag, |
| .transquant_bypass_enabled_flag = pps->transquant_bypass_enable_flag, |
| .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag, |
| .pps_loop_filter_across_slices_enabled_flag = pps->seq_loop_filter_across_slices_enabled_flag, |
| .loop_filter_across_tiles_enabled_flag = pps->loop_filter_across_tiles_enabled_flag, |
| .pcm_loop_filter_disabled_flag = sps->pcm.loop_filter_disable_flag, |
| }, |
| .slice_parsing_fields.bits = { |
| .lists_modification_present_flag = pps->lists_modification_present_flag, |
| .long_term_ref_pics_present_flag = sps->long_term_ref_pics_present_flag, |
| .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag, |
| .cabac_init_present_flag = pps->cabac_init_present_flag, |
| .output_flag_present_flag = pps->output_flag_present_flag, |
| .dependent_slice_segments_enabled_flag = pps->dependent_slice_segments_enabled_flag, |
| .pps_slice_chroma_qp_offsets_present_flag = pps->pic_slice_level_chroma_qp_offsets_present_flag, |
| .sample_adaptive_offset_enabled_flag = sps->sao_enabled, |
| .deblocking_filter_override_enabled_flag = pps->deblocking_filter_override_enabled_flag, |
| .pps_disable_deblocking_filter_flag = pps->disable_dbf, |
| .slice_segment_header_extension_present_flag = pps->slice_header_extension_present_flag, |
| .RapPicFlag = IS_IRAP(h), |
| .IdrPicFlag = IS_IDR(h), |
| .IntraPicFlag = IS_IRAP(h), |
| }, |
| }; |
| |
| fill_vaapi_pic(&pic->pic_param.CurrPic, h->ref, 0); |
| fill_vaapi_reference_frames(h, &pic->pic_param); |
| |
| if (pps->tiles_enabled_flag) { |
| pic->pic_param.num_tile_columns_minus1 = pps->num_tile_columns - 1; |
| pic->pic_param.num_tile_rows_minus1 = pps->num_tile_rows - 1; |
| |
| for (i = 0; i < pps->num_tile_columns; i++) |
| pic->pic_param.column_width_minus1[i] = pps->column_width[i] - 1; |
| |
| for (i = 0; i < pps->num_tile_rows; i++) |
| pic->pic_param.row_height_minus1[i] = pps->row_height[i] - 1; |
| } |
| |
| if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) { |
| pic->pic_param.st_rps_bits = h->sh.short_term_ref_pic_set_size; |
| } else { |
| pic->pic_param.st_rps_bits = 0; |
| } |
| |
| err = ff_vaapi_decode_make_param_buffer(avctx, &pic->pic, |
| VAPictureParameterBufferType, |
| &pic->pic_param, sizeof(pic->pic_param)); |
| if (err < 0) |
| goto fail; |
| |
| if (pps->scaling_list_data_present_flag) |
| scaling_list = &pps->scaling_list; |
| else if (sps->scaling_list_enable_flag) |
| scaling_list = &sps->scaling_list; |
| |
| if (scaling_list) { |
| VAIQMatrixBufferHEVC iq_matrix; |
| int j; |
| |
| for (i = 0; i < 6; i++) { |
| for (j = 0; j < 16; j++) |
| iq_matrix.ScalingList4x4[i][j] = scaling_list->sl[0][i][j]; |
| for (j = 0; j < 64; j++) { |
| iq_matrix.ScalingList8x8[i][j] = scaling_list->sl[1][i][j]; |
| iq_matrix.ScalingList16x16[i][j] = scaling_list->sl[2][i][j]; |
| if (i < 2) |
| iq_matrix.ScalingList32x32[i][j] = scaling_list->sl[3][i * 3][j]; |
| } |
| iq_matrix.ScalingListDC16x16[i] = scaling_list->sl_dc[0][i]; |
| if (i < 2) |
| iq_matrix.ScalingListDC32x32[i] = scaling_list->sl_dc[1][i * 3]; |
| } |
| |
| err = ff_vaapi_decode_make_param_buffer(avctx, &pic->pic, |
| VAIQMatrixBufferType, |
| &iq_matrix, sizeof(iq_matrix)); |
| if (err < 0) |
| goto fail; |
| } |
| |
| return 0; |
| |
| fail: |
| ff_vaapi_decode_cancel(avctx, &pic->pic); |
| return err; |
| } |
| |
| static int vaapi_hevc_end_frame(AVCodecContext *avctx) |
| { |
| const HEVCContext *h = avctx->priv_data; |
| VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; |
| int ret; |
| |
| if (pic->last_size) { |
| pic->last_slice_param.LongSliceFlags.fields.LastSliceOfPic = 1; |
| ret = ff_vaapi_decode_make_slice_buffer(avctx, &pic->pic, |
| &pic->last_slice_param, sizeof(pic->last_slice_param), |
| pic->last_buffer, pic->last_size); |
| if (ret < 0) |
| goto fail; |
| } |
| |
| |
| ret = ff_vaapi_decode_issue(avctx, &pic->pic); |
| if (ret < 0) |
| goto fail; |
| |
| return 0; |
| fail: |
| ff_vaapi_decode_cancel(avctx, &pic->pic); |
| return ret; |
| } |
| |
| static void fill_pred_weight_table(const HEVCContext *h, |
| const SliceHeader *sh, |
| VASliceParameterBufferHEVC *slice_param) |
| { |
| int i; |
| |
| memset(slice_param->delta_luma_weight_l0, 0, sizeof(slice_param->delta_luma_weight_l0)); |
| memset(slice_param->delta_luma_weight_l1, 0, sizeof(slice_param->delta_luma_weight_l1)); |
| memset(slice_param->luma_offset_l0, 0, sizeof(slice_param->luma_offset_l0)); |
| memset(slice_param->luma_offset_l1, 0, sizeof(slice_param->luma_offset_l1)); |
| memset(slice_param->delta_chroma_weight_l0, 0, sizeof(slice_param->delta_chroma_weight_l0)); |
| memset(slice_param->delta_chroma_weight_l1, 0, sizeof(slice_param->delta_chroma_weight_l1)); |
| memset(slice_param->ChromaOffsetL0, 0, sizeof(slice_param->ChromaOffsetL0)); |
| memset(slice_param->ChromaOffsetL1, 0, sizeof(slice_param->ChromaOffsetL1)); |
| |
| slice_param->delta_chroma_log2_weight_denom = 0; |
| slice_param->luma_log2_weight_denom = 0; |
| |
| if (sh->slice_type == HEVC_SLICE_I || |
| (sh->slice_type == HEVC_SLICE_P && !h->ps.pps->weighted_pred_flag) || |
| (sh->slice_type == HEVC_SLICE_B && !h->ps.pps->weighted_bipred_flag)) |
| return; |
| |
| slice_param->luma_log2_weight_denom = sh->luma_log2_weight_denom; |
| |
| if (h->ps.sps->chroma_format_idc) { |
| slice_param->delta_chroma_log2_weight_denom = sh->chroma_log2_weight_denom - sh->luma_log2_weight_denom; |
| } |
| |
| for (i = 0; i < 15 && i < sh->nb_refs[L0]; i++) { |
| slice_param->delta_luma_weight_l0[i] = sh->luma_weight_l0[i] - (1 << sh->luma_log2_weight_denom); |
| slice_param->luma_offset_l0[i] = sh->luma_offset_l0[i]; |
| slice_param->delta_chroma_weight_l0[i][0] = sh->chroma_weight_l0[i][0] - (1 << sh->chroma_log2_weight_denom); |
| slice_param->delta_chroma_weight_l0[i][1] = sh->chroma_weight_l0[i][1] - (1 << sh->chroma_log2_weight_denom); |
| slice_param->ChromaOffsetL0[i][0] = sh->chroma_offset_l0[i][0]; |
| slice_param->ChromaOffsetL0[i][1] = sh->chroma_offset_l0[i][1]; |
| } |
| |
| if (sh->slice_type == HEVC_SLICE_B) { |
| for (i = 0; i < 15 && i < sh->nb_refs[L1]; i++) { |
| slice_param->delta_luma_weight_l1[i] = sh->luma_weight_l1[i] - (1 << sh->luma_log2_weight_denom); |
| slice_param->luma_offset_l1[i] = sh->luma_offset_l1[i]; |
| slice_param->delta_chroma_weight_l1[i][0] = sh->chroma_weight_l1[i][0] - (1 << sh->chroma_log2_weight_denom); |
| slice_param->delta_chroma_weight_l1[i][1] = sh->chroma_weight_l1[i][1] - (1 << sh->chroma_log2_weight_denom); |
| slice_param->ChromaOffsetL1[i][0] = sh->chroma_offset_l1[i][0]; |
| slice_param->ChromaOffsetL1[i][1] = sh->chroma_offset_l1[i][1]; |
| } |
| } |
| } |
| |
| static uint8_t get_ref_pic_index(const HEVCContext *h, const HEVCFrame *frame) |
| { |
| VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; |
| VAPictureParameterBufferHEVC *pp = &pic->pic_param; |
| uint8_t i; |
| |
| if (!frame) |
| return 0xff; |
| |
| for (i = 0; i < FF_ARRAY_ELEMS(pp->ReferenceFrames); i++) { |
| VASurfaceID pid = pp->ReferenceFrames[i].picture_id; |
| int poc = pp->ReferenceFrames[i].pic_order_cnt; |
| if (pid != VA_INVALID_ID && pid == ff_vaapi_get_surface_id(frame->frame) && poc == frame->poc) |
| return i; |
| } |
| |
| return 0xff; |
| } |
| |
| static int vaapi_hevc_decode_slice(AVCodecContext *avctx, |
| const uint8_t *buffer, |
| uint32_t size) |
| { |
| const HEVCContext *h = avctx->priv_data; |
| const SliceHeader *sh = &h->sh; |
| VAAPIDecodePictureHEVC *pic = h->ref->hwaccel_picture_private; |
| |
| int nb_list = (sh->slice_type == HEVC_SLICE_B) ? |
| 2 : (sh->slice_type == HEVC_SLICE_I ? 0 : 1); |
| |
| int err, i, list_idx; |
| |
| if (!sh->first_slice_in_pic_flag) { |
| err = ff_vaapi_decode_make_slice_buffer(avctx, &pic->pic, |
| &pic->last_slice_param, sizeof(pic->last_slice_param), |
| pic->last_buffer, pic->last_size); |
| pic->last_buffer = NULL; |
| pic->last_size = 0; |
| if (err) { |
| ff_vaapi_decode_cancel(avctx, &pic->pic); |
| return err; |
| } |
| } |
| |
| pic->last_slice_param = (VASliceParameterBufferHEVC) { |
| .slice_data_size = size, |
| .slice_data_offset = 0, |
| .slice_data_flag = VA_SLICE_DATA_FLAG_ALL, |
| /* Add 1 to the bits count here to account for the byte_alignment bit, which |
| * always is at least one bit and not accounted for otherwise. */ |
| .slice_data_byte_offset = (get_bits_count(&h->HEVClc->gb) + 1 + 7) / 8, |
| .slice_segment_address = sh->slice_segment_addr, |
| .slice_qp_delta = sh->slice_qp_delta, |
| .slice_cb_qp_offset = sh->slice_cb_qp_offset, |
| .slice_cr_qp_offset = sh->slice_cr_qp_offset, |
| .slice_beta_offset_div2 = sh->beta_offset / 2, |
| .slice_tc_offset_div2 = sh->tc_offset / 2, |
| .collocated_ref_idx = sh->slice_temporal_mvp_enabled_flag ? sh->collocated_ref_idx : 0xFF, |
| .five_minus_max_num_merge_cand = sh->slice_type == HEVC_SLICE_I ? 0 : 5 - sh->max_num_merge_cand, |
| .num_ref_idx_l0_active_minus1 = sh->nb_refs[L0] ? sh->nb_refs[L0] - 1 : 0, |
| .num_ref_idx_l1_active_minus1 = sh->nb_refs[L1] ? sh->nb_refs[L1] - 1 : 0, |
| |
| .LongSliceFlags.fields = { |
| .dependent_slice_segment_flag = sh->dependent_slice_segment_flag, |
| .slice_type = sh->slice_type, |
| .color_plane_id = sh->colour_plane_id, |
| .mvd_l1_zero_flag = sh->mvd_l1_zero_flag, |
| .cabac_init_flag = sh->cabac_init_flag, |
| .slice_temporal_mvp_enabled_flag = sh->slice_temporal_mvp_enabled_flag, |
| .slice_deblocking_filter_disabled_flag = sh->disable_deblocking_filter_flag, |
| .collocated_from_l0_flag = sh->collocated_list == L0 ? 1 : 0, |
| .slice_loop_filter_across_slices_enabled_flag = sh->slice_loop_filter_across_slices_enabled_flag, |
| .slice_sao_luma_flag = sh->slice_sample_adaptive_offset_flag[0], |
| .slice_sao_chroma_flag = sh->slice_sample_adaptive_offset_flag[1], |
| }, |
| }; |
| |
| memset(pic->last_slice_param.RefPicList, 0xFF, sizeof(pic->last_slice_param.RefPicList)); |
| |
| for (list_idx = 0; list_idx < nb_list; list_idx++) { |
| RefPicList *rpl = &h->ref->refPicList[list_idx]; |
| |
| for (i = 0; i < rpl->nb_refs; i++) |
| pic->last_slice_param.RefPicList[list_idx][i] = get_ref_pic_index(h, rpl->ref[i]); |
| } |
| |
| fill_pred_weight_table(h, sh, &pic->last_slice_param); |
| |
| pic->last_buffer = buffer; |
| pic->last_size = size; |
| |
| return 0; |
| } |
| |
| AVHWAccel ff_hevc_vaapi_hwaccel = { |
| .name = "hevc_vaapi", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_HEVC, |
| .pix_fmt = AV_PIX_FMT_VAAPI, |
| .start_frame = vaapi_hevc_start_frame, |
| .end_frame = vaapi_hevc_end_frame, |
| .decode_slice = vaapi_hevc_decode_slice, |
| .frame_priv_data_size = sizeof(VAAPIDecodePictureHEVC), |
| .init = ff_vaapi_decode_init, |
| .uninit = ff_vaapi_decode_uninit, |
| .priv_data_size = sizeof(VAAPIDecodeContext), |
| .caps_internal = HWACCEL_CAP_ASYNC_SAFE, |
| }; |
