mirror of
https://github.com/FFmpeg/FFmpeg.git
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4c0d669b20
Start by moving the DPB to it. Only one context exists for now, so decoder behaviour should not change with this commit, but that will change in the future.
336 lines
16 KiB
C
336 lines
16 KiB
C
/*
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* HEVC HW decode acceleration through NVDEC
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*
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* Copyright (c) 2017 Anton Khirnov
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 <stdint.h>
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#include <string.h>
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#include "libavutil/mem.h"
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#include "avcodec.h"
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#include "nvdec.h"
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#include "decode.h"
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#include "internal.h"
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#include "hevc/hevcdec.h"
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#include "hevc/data.h"
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#include "hwaccel_internal.h"
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static void dpb_add(CUVIDHEVCPICPARAMS *pp, int idx, const HEVCFrame *src)
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{
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FrameDecodeData *fdd = (FrameDecodeData*)src->f->private_ref->data;
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const NVDECFrame *cf = fdd->hwaccel_priv;
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pp->RefPicIdx[idx] = cf ? cf->idx : -1;
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pp->PicOrderCntVal[idx] = src->poc;
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pp->IsLongTerm[idx] = !!(src->flags & HEVC_FRAME_FLAG_LONG_REF);
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}
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static void fill_scaling_lists(CUVIDHEVCPICPARAMS *ppc, const HEVCContext *s)
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{
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const ScalingList *sl = s->pps->scaling_list_data_present_flag ?
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&s->pps->scaling_list : &s->pps->sps->scaling_list;
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int i, j, pos;
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for (i = 0; i < 6; i++) {
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for (j = 0; j < 16; j++) {
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pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j];
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ppc->ScalingList4x4[i][j] = sl->sl[0][i][pos];
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}
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for (j = 0; j < 64; j++) {
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pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j];
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ppc->ScalingList8x8[i][j] = sl->sl[1][i][pos];
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ppc->ScalingList16x16[i][j] = sl->sl[2][i][pos];
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if (i < 2)
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ppc->ScalingList32x32[i][j] = sl->sl[3][i * 3][pos];
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}
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ppc->ScalingListDCCoeff16x16[i] = sl->sl_dc[0][i];
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if (i < 2)
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ppc->ScalingListDCCoeff32x32[i] = sl->sl_dc[1][i * 3];
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}
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}
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static int nvdec_hevc_start_frame(AVCodecContext *avctx,
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const uint8_t *buffer, uint32_t size)
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{
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const HEVCContext *s = avctx->priv_data;
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const HEVCLayerContext *l = &s->layers[s->cur_layer];
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const HEVCPPS *pps = s->pps;
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const HEVCSPS *sps = pps->sps;
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
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CUVIDPICPARAMS *pp = &ctx->pic_params;
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CUVIDHEVCPICPARAMS *ppc = &pp->CodecSpecific.hevc;
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FrameDecodeData *fdd;
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NVDECFrame *cf;
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int i, j, dpb_size, ret;
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ret = ff_nvdec_start_frame(avctx, s->cur_frame->f);
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if (ret < 0)
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return ret;
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fdd = (FrameDecodeData*)s->cur_frame->f->private_ref->data;
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cf = (NVDECFrame*)fdd->hwaccel_priv;
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*pp = (CUVIDPICPARAMS) {
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.PicWidthInMbs = sps->width / 16,
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.FrameHeightInMbs = sps->height / 16,
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.CurrPicIdx = cf->idx,
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.ref_pic_flag = 1,
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.intra_pic_flag = IS_IRAP(s),
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.CodecSpecific.hevc = {
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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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.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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.pcm_enabled_flag = sps->pcm_enabled,
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.log2_min_pcm_luma_coding_block_size_minus3 = sps->pcm_enabled ? sps->pcm.log2_min_pcm_cb_size - 3 : 0,
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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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.pcm_sample_bit_depth_luma_minus1 = sps->pcm_enabled ? sps->pcm.bit_depth - 1 : 0,
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.pcm_sample_bit_depth_chroma_minus1 = sps->pcm_enabled ? sps->pcm.bit_depth_chroma - 1 : 0,
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#if NVDECAPI_CHECK_VERSION(8, 1)
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.log2_max_transform_skip_block_size_minus2 = pps->log2_max_transform_skip_block_size - 2,
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.log2_sao_offset_scale_luma = pps->log2_sao_offset_scale_luma,
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.log2_sao_offset_scale_chroma = pps->log2_sao_offset_scale_chroma,
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.high_precision_offsets_enabled_flag = sps->high_precision_offsets_enabled,
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#endif
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.pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled,
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.strong_intra_smoothing_enabled_flag = sps->strong_intra_smoothing_enabled,
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.max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra,
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.max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter,
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.amp_enabled_flag = sps->amp_enabled,
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.separate_colour_plane_flag = sps->separate_colour_plane,
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.log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4,
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.num_short_term_ref_pic_sets = sps->nb_st_rps,
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.long_term_ref_pics_present_flag = sps->long_term_ref_pics_present,
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.num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps,
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.sps_temporal_mvp_enabled_flag = sps->temporal_mvp_enabled,
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.sample_adaptive_offset_enabled_flag = sps->sao_enabled,
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.scaling_list_enable_flag = sps->scaling_list_enabled,
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.IrapPicFlag = IS_IRAP(s),
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.IdrPicFlag = IS_IDR(s),
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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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#if NVDECAPI_CHECK_VERSION(9, 0)
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.sps_range_extension_flag = sps->range_extension,
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.transform_skip_rotation_enabled_flag = sps->transform_skip_rotation_enabled,
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.transform_skip_context_enabled_flag = sps->transform_skip_context_enabled,
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.implicit_rdpcm_enabled_flag = sps->implicit_rdpcm_enabled,
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.explicit_rdpcm_enabled_flag = sps->explicit_rdpcm_enabled,
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.extended_precision_processing_flag = sps->extended_precision_processing,
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.intra_smoothing_disabled_flag = sps->intra_smoothing_disabled,
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.persistent_rice_adaptation_enabled_flag = sps->persistent_rice_adaptation_enabled,
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.cabac_bypass_alignment_enabled_flag = sps->cabac_bypass_alignment_enabled,
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#endif
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.dependent_slice_segments_enabled_flag = pps->dependent_slice_segments_enabled_flag,
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.slice_segment_header_extension_present_flag = pps->slice_header_extension_present_flag,
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.sign_data_hiding_enabled_flag = pps->sign_data_hiding_flag,
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.cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag,
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.diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,
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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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.constrained_intra_pred_flag = pps->constrained_intra_pred_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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.transform_skip_enabled_flag = pps->transform_skip_enabled_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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.log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2,
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.num_extra_slice_header_bits = pps->num_extra_slice_header_bits,
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.loop_filter_across_tiles_enabled_flag = pps->loop_filter_across_tiles_enabled_flag,
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.loop_filter_across_slices_enabled_flag = pps->seq_loop_filter_across_slices_enabled_flag,
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.output_flag_present_flag = pps->output_flag_present_flag,
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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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.lists_modification_present_flag = pps->lists_modification_present_flag,
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.cabac_init_present_flag = pps->cabac_init_present_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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.deblocking_filter_override_enabled_flag = pps->deblocking_filter_override_enabled_flag,
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.pps_deblocking_filter_disabled_flag = pps->disable_dbf,
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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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.tiles_enabled_flag = pps->tiles_enabled_flag,
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.uniform_spacing_flag = pps->uniform_spacing_flag,
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.num_tile_columns_minus1 = pps->num_tile_columns - 1,
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.num_tile_rows_minus1 = pps->num_tile_rows - 1,
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#if NVDECAPI_CHECK_VERSION(9, 0)
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.pps_range_extension_flag = pps->pps_range_extensions_flag,
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.cross_component_prediction_enabled_flag = pps->cross_component_prediction_enabled_flag,
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.chroma_qp_offset_list_enabled_flag = pps->chroma_qp_offset_list_enabled_flag,
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.diff_cu_chroma_qp_offset_depth = pps->diff_cu_chroma_qp_offset_depth,
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.chroma_qp_offset_list_len_minus1 = pps->chroma_qp_offset_list_len_minus1,
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#endif
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.NumBitsForShortTermRPSInSlice = s->sh.short_term_rps ? s->sh.short_term_ref_pic_set_size : 0,
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.NumDeltaPocsOfRefRpsIdx = s->sh.short_term_rps ? s->sh.short_term_rps->rps_idx_num_delta_pocs : 0,
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.NumPocTotalCurr = ff_hevc_frame_nb_refs(&s->sh, pps),
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.NumPocStCurrBefore = s->rps[ST_CURR_BEF].nb_refs,
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.NumPocStCurrAfter = s->rps[ST_CURR_AFT].nb_refs,
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.NumPocLtCurr = s->rps[LT_CURR].nb_refs,
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.CurrPicOrderCntVal = s->cur_frame->poc,
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},
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};
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if (pps->num_tile_columns > FF_ARRAY_ELEMS(ppc->column_width_minus1) ||
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pps->num_tile_rows > FF_ARRAY_ELEMS(ppc->row_height_minus1)) {
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av_log(avctx, AV_LOG_ERROR, "Too many tiles\n");
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return AVERROR(ENOSYS);
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}
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for (i = 0; i < pps->num_tile_columns; i++)
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ppc->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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ppc->row_height_minus1[i] = pps->row_height[i] - 1;
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#if NVDECAPI_CHECK_VERSION(9, 0)
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if (pps->chroma_qp_offset_list_len_minus1 >= FF_ARRAY_ELEMS(ppc->cb_qp_offset_list) ||
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pps->chroma_qp_offset_list_len_minus1 >= FF_ARRAY_ELEMS(ppc->cr_qp_offset_list)) {
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av_log(avctx, AV_LOG_ERROR, "Too many chroma_qp_offsets\n");
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return AVERROR(ENOSYS);
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}
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for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
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ppc->cb_qp_offset_list[i] = pps->cb_qp_offset_list[i];
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ppc->cr_qp_offset_list[i] = pps->cr_qp_offset_list[i];
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}
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#endif
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if (s->rps[LT_CURR].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetLtCurr) ||
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s->rps[ST_CURR_BEF].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetStCurrBefore) ||
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s->rps[ST_CURR_AFT].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetStCurrAfter)) {
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av_log(avctx, AV_LOG_ERROR, "Too many reference frames\n");
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return AVERROR(ENOSYS);
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}
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dpb_size = 0;
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for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
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const HEVCFrame *ref = &l->DPB[i];
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if (!(ref->flags & (HEVC_FRAME_FLAG_SHORT_REF | HEVC_FRAME_FLAG_LONG_REF)))
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continue;
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if (dpb_size >= FF_ARRAY_ELEMS(ppc->RefPicIdx)) {
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av_log(avctx, AV_LOG_ERROR, "Too many reference frames\n");
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return AVERROR_INVALIDDATA;
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}
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dpb_add(ppc, dpb_size++, ref);
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}
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for (i = dpb_size; i < FF_ARRAY_ELEMS(ppc->RefPicIdx); i++)
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ppc->RefPicIdx[i] = -1;
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for (i = 0; i < s->rps[ST_CURR_BEF].nb_refs; i++) {
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for (j = 0; j < dpb_size; j++) {
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if (ppc->PicOrderCntVal[j] == s->rps[ST_CURR_BEF].list[i]) {
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ppc->RefPicSetStCurrBefore[i] = j;
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break;
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}
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}
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}
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for (i = 0; i < s->rps[ST_CURR_AFT].nb_refs; i++) {
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for (j = 0; j < dpb_size; j++) {
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if (ppc->PicOrderCntVal[j] == s->rps[ST_CURR_AFT].list[i]) {
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ppc->RefPicSetStCurrAfter[i] = j;
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break;
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}
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}
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}
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for (i = 0; i < s->rps[LT_CURR].nb_refs; i++) {
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for (j = 0; j < dpb_size; j++) {
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if (ppc->PicOrderCntVal[j] == s->rps[LT_CURR].list[i]) {
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ppc->RefPicSetLtCurr[i] = j;
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break;
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}
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}
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}
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fill_scaling_lists(ppc, s);
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return 0;
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}
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static int nvdec_hevc_decode_slice(AVCodecContext *avctx, const uint8_t *buffer,
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uint32_t size)
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{
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
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void *tmp;
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tmp = av_fast_realloc(ctx->bitstream_internal, &ctx->bitstream_allocated,
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ctx->bitstream_len + size + 3);
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if (!tmp)
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return AVERROR(ENOMEM);
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ctx->bitstream = ctx->bitstream_internal = tmp;
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tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated,
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(ctx->nb_slices + 1) * sizeof(*ctx->slice_offsets));
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if (!tmp)
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return AVERROR(ENOMEM);
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ctx->slice_offsets = tmp;
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AV_WB24(ctx->bitstream_internal + ctx->bitstream_len, 1);
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memcpy(ctx->bitstream_internal + ctx->bitstream_len + 3, buffer, size);
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ctx->slice_offsets[ctx->nb_slices] = ctx->bitstream_len ;
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ctx->bitstream_len += size + 3;
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ctx->nb_slices++;
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return 0;
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}
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static int nvdec_hevc_frame_params(AVCodecContext *avctx,
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AVBufferRef *hw_frames_ctx)
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{
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const HEVCContext *s = avctx->priv_data;
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const HEVCSPS *sps = s->pps->sps;
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return ff_nvdec_frame_params(avctx, hw_frames_ctx, sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering + 1, 1);
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}
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static int nvdec_hevc_decode_init(AVCodecContext *avctx) {
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
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ctx->supports_444 = 1;
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if (avctx->profile != AV_PROFILE_HEVC_MAIN &&
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avctx->profile != AV_PROFILE_HEVC_MAIN_10 &&
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avctx->profile != AV_PROFILE_HEVC_MAIN_STILL_PICTURE &&
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avctx->profile != AV_PROFILE_HEVC_REXT) {
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av_log(avctx, AV_LOG_ERROR, "Unsupported HEVC profile: %d\n", avctx->profile);
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return AVERROR(ENOTSUP);
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}
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return ff_nvdec_decode_init(avctx);
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}
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const FFHWAccel ff_hevc_nvdec_hwaccel = {
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.p.name = "hevc_nvdec",
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_HEVC,
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.p.pix_fmt = AV_PIX_FMT_CUDA,
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.start_frame = nvdec_hevc_start_frame,
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.end_frame = ff_nvdec_end_frame,
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.decode_slice = nvdec_hevc_decode_slice,
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.frame_params = nvdec_hevc_frame_params,
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.init = nvdec_hevc_decode_init,
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.uninit = ff_nvdec_decode_uninit,
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.priv_data_size = sizeof(NVDECContext),
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};
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