1/* 2 * AV1 HW decode acceleration through NVDEC 3 * 4 * Copyright (c) 2020 Timo Rothenpieler 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include "avcodec.h" 24#include "nvdec.h" 25#include "decode.h" 26#include "internal.h" 27#include "av1dec.h" 28 29 30static int get_bit_depth_from_seq(const AV1RawSequenceHeader *seq) 31{ 32 if (seq->seq_profile == 2 && seq->color_config.high_bitdepth) 33 return seq->color_config.twelve_bit ? 12 : 10; 34 else if (seq->seq_profile <= 2 && seq->color_config.high_bitdepth) 35 return 10; 36 else 37 return 8; 38} 39 40static int nvdec_av1_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) 41{ 42 const AV1DecContext *s = avctx->priv_data; 43 const AV1RawSequenceHeader *seq = s->raw_seq; 44 const AV1RawFrameHeader *frame_header = s->raw_frame_header; 45 const AV1RawFilmGrainParams *film_grain = &s->cur_frame.film_grain; 46 47 NVDECContext *ctx = avctx->internal->hwaccel_priv_data; 48 CUVIDPICPARAMS *pp = &ctx->pic_params; 49 CUVIDAV1PICPARAMS *ppc = &pp->CodecSpecific.av1; 50 FrameDecodeData *fdd; 51 NVDECFrame *cf; 52 AVFrame *cur_frame = s->cur_frame.f; 53 54 unsigned char remap_lr_type[4] = { AV1_RESTORE_NONE, AV1_RESTORE_SWITCHABLE, AV1_RESTORE_WIENER, AV1_RESTORE_SGRPROJ }; 55 56 int apply_grain = !(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN) && film_grain->apply_grain; 57 int ret, i, j; 58 59 ret = ff_nvdec_start_frame_sep_ref(avctx, cur_frame, apply_grain); 60 if (ret < 0) 61 return ret; 62 63 fdd = (FrameDecodeData*)cur_frame->private_ref->data; 64 cf = (NVDECFrame*)fdd->hwaccel_priv; 65 66 *pp = (CUVIDPICPARAMS) { 67 .PicWidthInMbs = (cur_frame->width + 15) / 16, 68 .FrameHeightInMbs = (cur_frame->height + 15) / 16, 69 .CurrPicIdx = cf->idx, 70 .ref_pic_flag = !!frame_header->refresh_frame_flags, 71 .intra_pic_flag = frame_header->frame_type == AV1_FRAME_INTRA_ONLY || 72 frame_header->frame_type == AV1_FRAME_KEY, 73 74 .CodecSpecific.av1 = { 75 .width = cur_frame->width, 76 .height = cur_frame->height, 77 78 .frame_offset = frame_header->order_hint, 79 .decodePicIdx = cf->ref_idx, 80 81 /* Sequence Header */ 82 .profile = seq->seq_profile, 83 .use_128x128_superblock = seq->use_128x128_superblock, 84 .subsampling_x = seq->color_config.subsampling_x, 85 .subsampling_y = seq->color_config.subsampling_y, 86 .mono_chrome = seq->color_config.mono_chrome, 87 .bit_depth_minus8 = get_bit_depth_from_seq(seq) - 8, 88 .enable_filter_intra = seq->enable_filter_intra, 89 .enable_intra_edge_filter = seq->enable_intra_edge_filter, 90 .enable_interintra_compound = seq->enable_interintra_compound, 91 .enable_masked_compound = seq->enable_masked_compound, 92 .enable_dual_filter = seq->enable_dual_filter, 93 .enable_order_hint = seq->enable_order_hint, 94 .order_hint_bits_minus1 = seq->order_hint_bits_minus_1, 95 .enable_jnt_comp = seq->enable_jnt_comp, 96 .enable_superres = seq->enable_superres, 97 .enable_cdef = seq->enable_cdef, 98 .enable_restoration = seq->enable_restoration, 99 .enable_fgs = seq->film_grain_params_present && 100 !(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN), 101 102 /* Frame Header */ 103 .frame_type = frame_header->frame_type, 104 .show_frame = frame_header->show_frame, 105 .disable_cdf_update = frame_header->disable_cdf_update, 106 .allow_screen_content_tools = frame_header->allow_screen_content_tools, 107 .force_integer_mv = frame_header->force_integer_mv || 108 frame_header->frame_type == AV1_FRAME_INTRA_ONLY || 109 frame_header->frame_type == AV1_FRAME_KEY, 110 .coded_denom = frame_header->coded_denom, 111 .allow_intrabc = frame_header->allow_intrabc, 112 .allow_high_precision_mv = frame_header->allow_high_precision_mv, 113 .interp_filter = frame_header->interpolation_filter, 114 .switchable_motion_mode = frame_header->is_motion_mode_switchable, 115 .use_ref_frame_mvs = frame_header->use_ref_frame_mvs, 116 .disable_frame_end_update_cdf = frame_header->disable_frame_end_update_cdf, 117 .delta_q_present = frame_header->delta_q_present, 118 .delta_q_res = frame_header->delta_q_res, 119 .using_qmatrix = frame_header->using_qmatrix, 120 .coded_lossless = s->cur_frame.coded_lossless, 121 .use_superres = frame_header->use_superres, 122 .tx_mode = frame_header->tx_mode, 123 .reference_mode = frame_header->reference_select, 124 .allow_warped_motion = frame_header->allow_warped_motion, 125 .reduced_tx_set = frame_header->reduced_tx_set, 126 .skip_mode = frame_header->skip_mode_present, 127 128 /* Tiling Info */ 129 .num_tile_cols = frame_header->tile_cols, 130 .num_tile_rows = frame_header->tile_rows, 131 .context_update_tile_id = frame_header->context_update_tile_id, 132 133 /* CDEF */ 134 .cdef_damping_minus_3 = frame_header->cdef_damping_minus_3, 135 .cdef_bits = frame_header->cdef_bits, 136 137 /* SkipModeFrames */ 138 .SkipModeFrame0 = frame_header->skip_mode_present ? 139 s->cur_frame.skip_mode_frame_idx[0] : 0, 140 .SkipModeFrame1 = frame_header->skip_mode_present ? 141 s->cur_frame.skip_mode_frame_idx[1] : 0, 142 143 /* QP Information */ 144 .base_qindex = frame_header->base_q_idx, 145 .qp_y_dc_delta_q = frame_header->delta_q_y_dc, 146 .qp_u_dc_delta_q = frame_header->delta_q_u_dc, 147 .qp_v_dc_delta_q = frame_header->delta_q_v_dc, 148 .qp_u_ac_delta_q = frame_header->delta_q_u_ac, 149 .qp_v_ac_delta_q = frame_header->delta_q_v_ac, 150 .qm_y = frame_header->qm_y, 151 .qm_u = frame_header->qm_u, 152 .qm_v = frame_header->qm_v, 153 154 /* Segmentation */ 155 .segmentation_enabled = frame_header->segmentation_enabled, 156 .segmentation_update_map = frame_header->segmentation_update_map, 157 .segmentation_update_data = frame_header->segmentation_update_data, 158 .segmentation_temporal_update = frame_header->segmentation_temporal_update, 159 160 /* Loopfilter */ 161 .loop_filter_level[0] = frame_header->loop_filter_level[0], 162 .loop_filter_level[1] = frame_header->loop_filter_level[1], 163 .loop_filter_level_u = frame_header->loop_filter_level[2], 164 .loop_filter_level_v = frame_header->loop_filter_level[3], 165 .loop_filter_sharpness = frame_header->loop_filter_sharpness, 166 .loop_filter_delta_enabled = frame_header->loop_filter_delta_enabled, 167 .loop_filter_delta_update = frame_header->loop_filter_delta_update, 168 .loop_filter_mode_deltas[0] = frame_header->loop_filter_mode_deltas[0], 169 .loop_filter_mode_deltas[1] = frame_header->loop_filter_mode_deltas[1], 170 .delta_lf_present = frame_header->delta_lf_present, 171 .delta_lf_res = frame_header->delta_lf_res, 172 .delta_lf_multi = frame_header->delta_lf_multi, 173 174 /* Restoration */ 175 .lr_type[0] = remap_lr_type[frame_header->lr_type[0]], 176 .lr_type[1] = remap_lr_type[frame_header->lr_type[1]], 177 .lr_type[2] = remap_lr_type[frame_header->lr_type[2]], 178 .lr_unit_size[0] = 1 + frame_header->lr_unit_shift, 179 .lr_unit_size[1] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift, 180 .lr_unit_size[2] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift, 181 182 /* Reference Frames */ 183 .temporal_layer_id = s->cur_frame.temporal_id, 184 .spatial_layer_id = s->cur_frame.spatial_id, 185 186 /* Film Grain Params */ 187 .apply_grain = apply_grain, 188 .overlap_flag = film_grain->overlap_flag, 189 .scaling_shift_minus8 = film_grain->grain_scaling_minus_8, 190 .chroma_scaling_from_luma = film_grain->chroma_scaling_from_luma, 191 .ar_coeff_lag = film_grain->ar_coeff_lag, 192 .ar_coeff_shift_minus6 = film_grain->ar_coeff_shift_minus_6, 193 .grain_scale_shift = film_grain->grain_scale_shift, 194 .clip_to_restricted_range = film_grain->clip_to_restricted_range, 195 .num_y_points = film_grain->num_y_points, 196 .num_cb_points = film_grain->num_cb_points, 197 .num_cr_points = film_grain->num_cr_points, 198 .random_seed = film_grain->grain_seed, 199 .cb_mult = film_grain->cb_mult, 200 .cb_luma_mult = film_grain->cb_luma_mult, 201 .cb_offset = film_grain->cb_offset, 202 .cr_mult = film_grain->cr_mult, 203 .cr_luma_mult = film_grain->cr_luma_mult, 204 .cr_offset = film_grain->cr_offset 205 } 206 }; 207 208 /* Tiling Info */ 209 for (i = 0; i < frame_header->tile_cols; ++i) { 210 ppc->tile_widths[i] = frame_header->width_in_sbs_minus_1[i] + 1; 211 } 212 for (i = 0; i < frame_header->tile_rows; ++i) { 213 ppc->tile_heights[i] = frame_header->height_in_sbs_minus_1[i] + 1; 214 } 215 216 /* CDEF */ 217 for (i = 0; i < (1 << frame_header->cdef_bits); ++i) { 218 ppc->cdef_y_strength[i] = (frame_header->cdef_y_pri_strength[i] & 0x0F) | (frame_header->cdef_y_sec_strength[i] << 4); 219 ppc->cdef_uv_strength[i] = (frame_header->cdef_uv_pri_strength[i] & 0x0F) | (frame_header->cdef_uv_sec_strength[i] << 4); 220 } 221 222 /* Segmentation */ 223 for (i = 0; i < AV1_MAX_SEGMENTS; ++i) { 224 ppc->segmentation_feature_mask[i] = 0; 225 for (j = 0; j < AV1_SEG_LVL_MAX; ++j) { 226 ppc->segmentation_feature_mask[i] |= frame_header->feature_enabled[i][j] << j; 227 ppc->segmentation_feature_data[i][j] = frame_header->feature_value[i][j]; 228 } 229 } 230 231 for (i = 0; i < AV1_NUM_REF_FRAMES; ++i) { 232 /* Loopfilter */ 233 ppc->loop_filter_ref_deltas[i] = frame_header->loop_filter_ref_deltas[i]; 234 235 /* Reference Frames */ 236 ppc->ref_frame_map[i] = ff_nvdec_get_ref_idx(s->ref[i].f); 237 } 238 239 if (frame_header->primary_ref_frame == AV1_PRIMARY_REF_NONE) { 240 ppc->primary_ref_frame = -1; 241 } else { 242 int8_t pri_ref_idx = frame_header->ref_frame_idx[frame_header->primary_ref_frame]; 243 ppc->primary_ref_frame = ppc->ref_frame_map[pri_ref_idx]; 244 } 245 246 for (i = 0; i < AV1_REFS_PER_FRAME; ++i) { 247 /* Ref Frame List */ 248 int8_t ref_idx = frame_header->ref_frame_idx[i]; 249 AVFrame *ref_frame = s->ref[ref_idx].f; 250 251 ppc->ref_frame[i].index = ppc->ref_frame_map[ref_idx]; 252 ppc->ref_frame[i].width = ref_frame->width; 253 ppc->ref_frame[i].height = ref_frame->height; 254 255 /* Global Motion */ 256 ppc->global_motion[i].invalid = !frame_header->is_global[AV1_REF_FRAME_LAST + i]; 257 ppc->global_motion[i].wmtype = s->cur_frame.gm_type[AV1_REF_FRAME_LAST + i]; 258 for (j = 0; j < 6; ++j) { 259 ppc->global_motion[i].wmmat[j] = s->cur_frame.gm_params[AV1_REF_FRAME_LAST + i][j]; 260 } 261 } 262 263 /* Film Grain Params */ 264 if (apply_grain) { 265 for (i = 0; i < 14; ++i) { 266 ppc->scaling_points_y[i][0] = film_grain->point_y_value[i]; 267 ppc->scaling_points_y[i][1] = film_grain->point_y_scaling[i]; 268 } 269 for (i = 0; i < 10; ++i) { 270 ppc->scaling_points_cb[i][0] = film_grain->point_cb_value[i]; 271 ppc->scaling_points_cb[i][1] = film_grain->point_cb_scaling[i]; 272 ppc->scaling_points_cr[i][0] = film_grain->point_cr_value[i]; 273 ppc->scaling_points_cr[i][1] = film_grain->point_cr_scaling[i]; 274 } 275 for (i = 0; i < 24; ++i) { 276 ppc->ar_coeffs_y[i] = (short)film_grain->ar_coeffs_y_plus_128[i] - 128; 277 } 278 for (i = 0; i < 25; ++i) { 279 ppc->ar_coeffs_cb[i] = (short)film_grain->ar_coeffs_cb_plus_128[i] - 128; 280 ppc->ar_coeffs_cr[i] = (short)film_grain->ar_coeffs_cr_plus_128[i] - 128; 281 } 282 } 283 284 return 0; 285} 286 287static int nvdec_av1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) 288{ 289 const AV1DecContext *s = avctx->priv_data; 290 const AV1RawFrameHeader *frame_header = s->raw_frame_header; 291 NVDECContext *ctx = avctx->internal->hwaccel_priv_data; 292 void *tmp; 293 294 ctx->nb_slices = frame_header->tile_cols * frame_header->tile_rows; 295 296 tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated, 297 ctx->nb_slices * 2 * sizeof(*ctx->slice_offsets)); 298 if (!tmp) { 299 return AVERROR(ENOMEM); 300 } 301 ctx->slice_offsets = tmp; 302 303 /* Shortcut if all tiles are in the same buffer */ 304 if (ctx->nb_slices == s->tg_end - s->tg_start + 1) { 305 ctx->bitstream = (uint8_t*)buffer; 306 ctx->bitstream_len = size; 307 308 for (int i = 0; i < ctx->nb_slices; ++i) { 309 ctx->slice_offsets[i*2 ] = s->tile_group_info[i].tile_offset; 310 ctx->slice_offsets[i*2 + 1] = ctx->slice_offsets[i*2] + s->tile_group_info[i].tile_size; 311 } 312 313 return 0; 314 } 315 316 tmp = av_fast_realloc(ctx->bitstream_internal, &ctx->bitstream_allocated, 317 ctx->bitstream_len + size); 318 if (!tmp) { 319 return AVERROR(ENOMEM); 320 } 321 ctx->bitstream = ctx->bitstream_internal = tmp; 322 323 memcpy(ctx->bitstream + ctx->bitstream_len, buffer, size); 324 325 for (uint32_t tile_num = s->tg_start; tile_num <= s->tg_end; ++tile_num) { 326 ctx->slice_offsets[tile_num*2 ] = ctx->bitstream_len + s->tile_group_info[tile_num].tile_offset; 327 ctx->slice_offsets[tile_num*2 + 1] = ctx->slice_offsets[tile_num*2] + s->tile_group_info[tile_num].tile_size; 328 } 329 ctx->bitstream_len += size; 330 331 return 0; 332} 333 334static int nvdec_av1_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx) 335{ 336 /* Maximum of 8 reference frames, but potentially stored twice due to film grain */ 337 return ff_nvdec_frame_params(avctx, hw_frames_ctx, 8 * 2, 0); 338} 339 340const AVHWAccel ff_av1_nvdec_hwaccel = { 341 .name = "av1_nvdec", 342 .type = AVMEDIA_TYPE_VIDEO, 343 .id = AV_CODEC_ID_AV1, 344 .pix_fmt = AV_PIX_FMT_CUDA, 345 .start_frame = nvdec_av1_start_frame, 346 .end_frame = ff_nvdec_simple_end_frame, 347 .decode_slice = nvdec_av1_decode_slice, 348 .frame_params = nvdec_av1_frame_params, 349 .init = ff_nvdec_decode_init, 350 .uninit = ff_nvdec_decode_uninit, 351 .priv_data_size = sizeof(NVDECContext), 352}; 353