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