/* * AV1 HW decode acceleration through NVDEC * * Copyright (c) 2020 Timo Rothenpieler * * 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 "avcodec.h" #include "nvdec.h" #include "decode.h" #include "internal.h" #include "av1dec.h" static int get_bit_depth_from_seq(const AV1RawSequenceHeader *seq) { if (seq->seq_profile == 2 && seq->color_config.high_bitdepth) return seq->color_config.twelve_bit ? 12 : 10; else if (seq->seq_profile <= 2 && seq->color_config.high_bitdepth) return 10; else return 8; } static int nvdec_av1_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) { const AV1DecContext *s = avctx->priv_data; const AV1RawSequenceHeader *seq = s->raw_seq; const AV1RawFrameHeader *frame_header = s->raw_frame_header; NVDECContext *ctx = avctx->internal->hwaccel_priv_data; CUVIDPICPARAMS *pp = &ctx->pic_params; CUVIDAV1PICPARAMS *ppc = &pp->CodecSpecific.av1; FrameDecodeData *fdd; NVDECFrame *cf; AVFrame *cur_frame = s->cur_frame.tf.f; unsigned char remap_lr_type[4] = { AV1_RESTORE_NONE, AV1_RESTORE_SWITCHABLE, AV1_RESTORE_WIENER, AV1_RESTORE_SGRPROJ }; int ret, i, j; ret = ff_nvdec_start_frame_sep_ref(avctx, cur_frame, frame_header->apply_grain); if (ret < 0) return ret; fdd = (FrameDecodeData*)cur_frame->private_ref->data; cf = (NVDECFrame*)fdd->hwaccel_priv; *pp = (CUVIDPICPARAMS) { .PicWidthInMbs = (cur_frame->width + 15) / 16, .FrameHeightInMbs = (cur_frame->height + 15) / 16, .CurrPicIdx = cf->idx, .ref_pic_flag = !!frame_header->refresh_frame_flags, .intra_pic_flag = frame_header->frame_type == AV1_FRAME_INTRA_ONLY || frame_header->frame_type == AV1_FRAME_KEY, .CodecSpecific.av1 = { .width = cur_frame->width, .height = cur_frame->height, .frame_offset = frame_header->order_hint, .decodePicIdx = cf->ref_idx, /* Sequence Header */ .profile = seq->seq_profile, .use_128x128_superblock = seq->use_128x128_superblock, .subsampling_x = seq->color_config.subsampling_x, .subsampling_y = seq->color_config.subsampling_y, .mono_chrome = seq->color_config.mono_chrome, .bit_depth_minus8 = get_bit_depth_from_seq(seq) - 8, .enable_filter_intra = seq->enable_filter_intra, .enable_intra_edge_filter = seq->enable_intra_edge_filter, .enable_interintra_compound = seq->enable_interintra_compound, .enable_masked_compound = seq->enable_masked_compound, .enable_dual_filter = seq->enable_dual_filter, .enable_order_hint = seq->enable_order_hint, .order_hint_bits_minus1 = seq->order_hint_bits_minus_1, .enable_jnt_comp = seq->enable_jnt_comp, .enable_superres = seq->enable_superres, .enable_cdef = seq->enable_cdef, .enable_restoration = seq->enable_restoration, .enable_fgs = seq->film_grain_params_present, /* Frame Header */ .frame_type = frame_header->frame_type, .show_frame = frame_header->show_frame, .disable_cdf_update = frame_header->disable_cdf_update, .allow_screen_content_tools = frame_header->allow_screen_content_tools, .force_integer_mv = frame_header->force_integer_mv || frame_header->frame_type == AV1_FRAME_INTRA_ONLY || frame_header->frame_type == AV1_FRAME_KEY, .coded_denom = frame_header->coded_denom, .allow_intrabc = frame_header->allow_intrabc, .allow_high_precision_mv = frame_header->allow_high_precision_mv, .interp_filter = frame_header->interpolation_filter, .switchable_motion_mode = frame_header->is_motion_mode_switchable, .use_ref_frame_mvs = frame_header->use_ref_frame_mvs, .disable_frame_end_update_cdf = frame_header->disable_frame_end_update_cdf, .delta_q_present = frame_header->delta_q_present, .delta_q_res = frame_header->delta_q_res, .using_qmatrix = frame_header->using_qmatrix, .coded_lossless = s->cur_frame.coded_lossless, .use_superres = frame_header->use_superres, .tx_mode = frame_header->tx_mode, .reference_mode = frame_header->reference_select, .allow_warped_motion = frame_header->allow_warped_motion, .reduced_tx_set = frame_header->reduced_tx_set, .skip_mode = frame_header->skip_mode_present, /* Tiling Info */ .num_tile_cols = frame_header->tile_cols, .num_tile_rows = frame_header->tile_rows, .context_update_tile_id = frame_header->context_update_tile_id, /* CDEF */ .cdef_damping_minus_3 = frame_header->cdef_damping_minus_3, .cdef_bits = frame_header->cdef_bits, /* SkipModeFrames */ .SkipModeFrame0 = frame_header->skip_mode_present ? s->cur_frame.skip_mode_frame_idx[0] : 0, .SkipModeFrame1 = frame_header->skip_mode_present ? s->cur_frame.skip_mode_frame_idx[1] : 0, /* QP Information */ .base_qindex = frame_header->base_q_idx, .qp_y_dc_delta_q = frame_header->delta_q_y_dc, .qp_u_dc_delta_q = frame_header->delta_q_u_dc, .qp_v_dc_delta_q = frame_header->delta_q_v_dc, .qp_u_ac_delta_q = frame_header->delta_q_u_ac, .qp_v_ac_delta_q = frame_header->delta_q_v_ac, .qm_y = frame_header->qm_y, .qm_u = frame_header->qm_u, .qm_v = frame_header->qm_v, /* Segmentation */ .segmentation_enabled = frame_header->segmentation_enabled, .segmentation_update_map = frame_header->segmentation_update_map, .segmentation_update_data = frame_header->segmentation_update_data, .segmentation_temporal_update = frame_header->segmentation_temporal_update, /* Loopfilter */ .loop_filter_level[0] = frame_header->loop_filter_level[0], .loop_filter_level[1] = frame_header->loop_filter_level[1], .loop_filter_level_u = frame_header->loop_filter_level[2], .loop_filter_level_v = frame_header->loop_filter_level[3], .loop_filter_sharpness = frame_header->loop_filter_sharpness, .loop_filter_delta_enabled = frame_header->loop_filter_delta_enabled, .loop_filter_delta_update = frame_header->loop_filter_delta_update, .loop_filter_mode_deltas[0] = frame_header->loop_filter_mode_deltas[0], .loop_filter_mode_deltas[1] = frame_header->loop_filter_mode_deltas[1], .delta_lf_present = frame_header->delta_lf_present, .delta_lf_res = frame_header->delta_lf_res, .delta_lf_multi = frame_header->delta_lf_multi, /* Restoration */ .lr_type[0] = remap_lr_type[frame_header->lr_type[0]], .lr_type[1] = remap_lr_type[frame_header->lr_type[1]], .lr_type[2] = remap_lr_type[frame_header->lr_type[2]], .lr_unit_size[0] = 1 + frame_header->lr_unit_shift, .lr_unit_size[1] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift, .lr_unit_size[2] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift, /* Reference Frames */ .temporal_layer_id = s->cur_frame.temporal_id, .spatial_layer_id = s->cur_frame.spatial_id, /* Film Grain Params */ .apply_grain = frame_header->apply_grain, .overlap_flag = frame_header->overlap_flag, .scaling_shift_minus8 = frame_header->grain_scaling_minus_8, .chroma_scaling_from_luma = frame_header->chroma_scaling_from_luma, .ar_coeff_lag = frame_header->ar_coeff_lag, .ar_coeff_shift_minus6 = frame_header->ar_coeff_shift_minus_6, .grain_scale_shift = frame_header->grain_scale_shift, .clip_to_restricted_range = frame_header->clip_to_restricted_range, .num_y_points = frame_header->num_y_points, .num_cb_points = frame_header->num_cb_points, .num_cr_points = frame_header->num_cr_points, .random_seed = frame_header->grain_seed, .cb_mult = frame_header->cb_mult, .cb_luma_mult = frame_header->cb_luma_mult, .cb_offset = frame_header->cb_offset, .cr_mult = frame_header->cr_mult, .cr_luma_mult = frame_header->cr_luma_mult, .cr_offset = frame_header->cr_offset } }; /* Tiling Info */ for (i = 0; i < frame_header->tile_cols; ++i) { ppc->tile_widths[i] = frame_header->width_in_sbs_minus_1[i] + 1; } for (i = 0; i < frame_header->tile_rows; ++i) { ppc->tile_heights[i] = frame_header->height_in_sbs_minus_1[i] + 1; } /* CDEF */ for (i = 0; i < (1 << frame_header->cdef_bits); ++i) { ppc->cdef_y_strength[i] = (frame_header->cdef_y_pri_strength[i] & 0x0F) | (frame_header->cdef_y_sec_strength[i] << 4); ppc->cdef_uv_strength[i] = (frame_header->cdef_uv_pri_strength[i] & 0x0F) | (frame_header->cdef_uv_sec_strength[i] << 4); } /* Segmentation */ for (i = 0; i < AV1_MAX_SEGMENTS; ++i) { ppc->segmentation_feature_mask[i] = 0; for (j = 0; j < AV1_SEG_LVL_MAX; ++j) { ppc->segmentation_feature_mask[i] |= frame_header->feature_enabled[i][j] << j; ppc->segmentation_feature_data[i][j] = frame_header->feature_value[i][j]; } } for (i = 0; i < AV1_NUM_REF_FRAMES; ++i) { /* Loopfilter */ ppc->loop_filter_ref_deltas[i] = frame_header->loop_filter_ref_deltas[i]; /* Reference Frames */ ppc->ref_frame_map[i] = ff_nvdec_get_ref_idx(s->ref[i].tf.f); } if (frame_header->primary_ref_frame == AV1_PRIMARY_REF_NONE) { ppc->primary_ref_frame = -1; } else { int8_t pri_ref_idx = frame_header->ref_frame_idx[frame_header->primary_ref_frame]; ppc->primary_ref_frame = ppc->ref_frame_map[pri_ref_idx]; } for (i = 0; i < AV1_REFS_PER_FRAME; ++i) { /* Ref Frame List */ int8_t ref_idx = frame_header->ref_frame_idx[i]; AVFrame *ref_frame = s->ref[ref_idx].tf.f; ppc->ref_frame[i].index = ppc->ref_frame_map[ref_idx]; ppc->ref_frame[i].width = ref_frame->width; ppc->ref_frame[i].height = ref_frame->height; /* Global Motion */ ppc->global_motion[i].invalid = !frame_header->is_global[AV1_REF_FRAME_LAST + i]; ppc->global_motion[i].wmtype = s->cur_frame.gm_type[AV1_REF_FRAME_LAST + i]; for (j = 0; j < 6; ++j) { ppc->global_motion[i].wmmat[j] = s->cur_frame.gm_params[AV1_REF_FRAME_LAST + i][j]; } } /* Film Grain Params */ if (frame_header->apply_grain) { for (i = 0; i < 14; ++i) { ppc->scaling_points_y[i][0] = frame_header->point_y_value[i]; ppc->scaling_points_y[i][1] = frame_header->point_y_scaling[i]; } for (i = 0; i < 10; ++i) { ppc->scaling_points_cb[i][0] = frame_header->point_cb_value[i]; ppc->scaling_points_cb[i][1] = frame_header->point_cb_scaling[i]; ppc->scaling_points_cr[i][0] = frame_header->point_cr_value[i]; ppc->scaling_points_cr[i][1] = frame_header->point_cr_scaling[i]; } for (i = 0; i < 24; ++i) { ppc->ar_coeffs_y[i] = (short)frame_header->ar_coeffs_y_plus_128[i] - 128; } for (i = 0; i < 25; ++i) { ppc->ar_coeffs_cb[i] = (short)frame_header->ar_coeffs_cb_plus_128[i] - 128; ppc->ar_coeffs_cr[i] = (short)frame_header->ar_coeffs_cr_plus_128[i] - 128; } } return 0; } static int nvdec_av1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) { const AV1DecContext *s = avctx->priv_data; const AV1RawFrameHeader *frame_header = s->raw_frame_header; NVDECContext *ctx = avctx->internal->hwaccel_priv_data; void *tmp; ctx->nb_slices = frame_header->tile_cols * frame_header->tile_rows; tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated, ctx->nb_slices * 2 * sizeof(*ctx->slice_offsets)); if (!tmp) { return AVERROR(ENOMEM); } ctx->slice_offsets = tmp; /* Shortcut if all tiles are in the same buffer */ if (ctx->nb_slices == s->tg_end - s->tg_start + 1) { ctx->bitstream = (uint8_t*)buffer; ctx->bitstream_len = size; for (int i = 0; i < ctx->nb_slices; ++i) { ctx->slice_offsets[i*2 ] = s->tile_group_info[i].tile_offset; ctx->slice_offsets[i*2 + 1] = ctx->slice_offsets[i*2] + s->tile_group_info[i].tile_size; } return 0; } tmp = av_fast_realloc(ctx->bitstream_internal, &ctx->bitstream_allocated, ctx->bitstream_len + size); if (!tmp) { return AVERROR(ENOMEM); } ctx->bitstream = ctx->bitstream_internal = tmp; memcpy(ctx->bitstream + ctx->bitstream_len, buffer, size); for (uint32_t tile_num = s->tg_start; tile_num <= s->tg_end; ++tile_num) { ctx->slice_offsets[tile_num*2 ] = ctx->bitstream_len + s->tile_group_info[tile_num].tile_offset; ctx->slice_offsets[tile_num*2 + 1] = ctx->slice_offsets[tile_num*2] + s->tile_group_info[tile_num].tile_size; } ctx->bitstream_len += size; return 0; } static int nvdec_av1_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx) { /* Maximum of 8 reference frames, but potentially stored twice due to film grain */ return ff_nvdec_frame_params(avctx, hw_frames_ctx, 8 * 2, 0); } const AVHWAccel ff_av1_nvdec_hwaccel = { .name = "av1_nvdec", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_AV1, .pix_fmt = AV_PIX_FMT_CUDA, .start_frame = nvdec_av1_start_frame, .end_frame = ff_nvdec_simple_end_frame, .decode_slice = nvdec_av1_decode_slice, .frame_params = nvdec_av1_frame_params, .init = ff_nvdec_decode_init, .uninit = ff_nvdec_decode_uninit, .priv_data_size = sizeof(NVDECContext), };