2 * AV1 HW decode acceleration through NVDEC
4 * Copyright (c) 2020 Timo Rothenpieler
6 * This file is part of FFmpeg.
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.
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.
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
30 static int get_bit_depth_from_seq(const AV1RawSequenceHeader *seq)
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)
40 static int nvdec_av1_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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;
47 NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
48 CUVIDPICPARAMS *pp = &ctx->pic_params;
49 CUVIDAV1PICPARAMS *ppc = &pp->CodecSpecific.av1;
52 AVFrame *cur_frame = s->cur_frame.tf.f;
54 unsigned char remap_lr_type[4] = { AV1_RESTORE_NONE, AV1_RESTORE_SWITCHABLE, AV1_RESTORE_WIENER, AV1_RESTORE_SGRPROJ };
58 ret = ff_nvdec_start_frame_sep_ref(avctx, cur_frame, film_grain->apply_grain);
62 fdd = (FrameDecodeData*)cur_frame->private_ref->data;
63 cf = (NVDECFrame*)fdd->hwaccel_priv;
65 *pp = (CUVIDPICPARAMS) {
66 .PicWidthInMbs = (cur_frame->width + 15) / 16,
67 .FrameHeightInMbs = (cur_frame->height + 15) / 16,
68 .CurrPicIdx = cf->idx,
69 .ref_pic_flag = !!frame_header->refresh_frame_flags,
70 .intra_pic_flag = frame_header->frame_type == AV1_FRAME_INTRA_ONLY ||
71 frame_header->frame_type == AV1_FRAME_KEY,
73 .CodecSpecific.av1 = {
74 .width = cur_frame->width,
75 .height = cur_frame->height,
77 .frame_offset = frame_header->order_hint,
78 .decodePicIdx = cf->ref_idx,
81 .profile = seq->seq_profile,
82 .use_128x128_superblock = seq->use_128x128_superblock,
83 .subsampling_x = seq->color_config.subsampling_x,
84 .subsampling_y = seq->color_config.subsampling_y,
85 .mono_chrome = seq->color_config.mono_chrome,
86 .bit_depth_minus8 = get_bit_depth_from_seq(seq) - 8,
87 .enable_filter_intra = seq->enable_filter_intra,
88 .enable_intra_edge_filter = seq->enable_intra_edge_filter,
89 .enable_interintra_compound = seq->enable_interintra_compound,
90 .enable_masked_compound = seq->enable_masked_compound,
91 .enable_dual_filter = seq->enable_dual_filter,
92 .enable_order_hint = seq->enable_order_hint,
93 .order_hint_bits_minus1 = seq->order_hint_bits_minus_1,
94 .enable_jnt_comp = seq->enable_jnt_comp,
95 .enable_superres = seq->enable_superres,
96 .enable_cdef = seq->enable_cdef,
97 .enable_restoration = seq->enable_restoration,
98 .enable_fgs = seq->film_grain_params_present,
101 .frame_type = frame_header->frame_type,
102 .show_frame = frame_header->show_frame,
103 .disable_cdf_update = frame_header->disable_cdf_update,
104 .allow_screen_content_tools = frame_header->allow_screen_content_tools,
105 .force_integer_mv = frame_header->force_integer_mv ||
106 frame_header->frame_type == AV1_FRAME_INTRA_ONLY ||
107 frame_header->frame_type == AV1_FRAME_KEY,
108 .coded_denom = frame_header->coded_denom,
109 .allow_intrabc = frame_header->allow_intrabc,
110 .allow_high_precision_mv = frame_header->allow_high_precision_mv,
111 .interp_filter = frame_header->interpolation_filter,
112 .switchable_motion_mode = frame_header->is_motion_mode_switchable,
113 .use_ref_frame_mvs = frame_header->use_ref_frame_mvs,
114 .disable_frame_end_update_cdf = frame_header->disable_frame_end_update_cdf,
115 .delta_q_present = frame_header->delta_q_present,
116 .delta_q_res = frame_header->delta_q_res,
117 .using_qmatrix = frame_header->using_qmatrix,
118 .coded_lossless = s->cur_frame.coded_lossless,
119 .use_superres = frame_header->use_superres,
120 .tx_mode = frame_header->tx_mode,
121 .reference_mode = frame_header->reference_select,
122 .allow_warped_motion = frame_header->allow_warped_motion,
123 .reduced_tx_set = frame_header->reduced_tx_set,
124 .skip_mode = frame_header->skip_mode_present,
127 .num_tile_cols = frame_header->tile_cols,
128 .num_tile_rows = frame_header->tile_rows,
129 .context_update_tile_id = frame_header->context_update_tile_id,
132 .cdef_damping_minus_3 = frame_header->cdef_damping_minus_3,
133 .cdef_bits = frame_header->cdef_bits,
136 .SkipModeFrame0 = frame_header->skip_mode_present ?
137 s->cur_frame.skip_mode_frame_idx[0] : 0,
138 .SkipModeFrame1 = frame_header->skip_mode_present ?
139 s->cur_frame.skip_mode_frame_idx[1] : 0,
142 .base_qindex = frame_header->base_q_idx,
143 .qp_y_dc_delta_q = frame_header->delta_q_y_dc,
144 .qp_u_dc_delta_q = frame_header->delta_q_u_dc,
145 .qp_v_dc_delta_q = frame_header->delta_q_v_dc,
146 .qp_u_ac_delta_q = frame_header->delta_q_u_ac,
147 .qp_v_ac_delta_q = frame_header->delta_q_v_ac,
148 .qm_y = frame_header->qm_y,
149 .qm_u = frame_header->qm_u,
150 .qm_v = frame_header->qm_v,
153 .segmentation_enabled = frame_header->segmentation_enabled,
154 .segmentation_update_map = frame_header->segmentation_update_map,
155 .segmentation_update_data = frame_header->segmentation_update_data,
156 .segmentation_temporal_update = frame_header->segmentation_temporal_update,
159 .loop_filter_level[0] = frame_header->loop_filter_level[0],
160 .loop_filter_level[1] = frame_header->loop_filter_level[1],
161 .loop_filter_level_u = frame_header->loop_filter_level[2],
162 .loop_filter_level_v = frame_header->loop_filter_level[3],
163 .loop_filter_sharpness = frame_header->loop_filter_sharpness,
164 .loop_filter_delta_enabled = frame_header->loop_filter_delta_enabled,
165 .loop_filter_delta_update = frame_header->loop_filter_delta_update,
166 .loop_filter_mode_deltas[0] = frame_header->loop_filter_mode_deltas[0],
167 .loop_filter_mode_deltas[1] = frame_header->loop_filter_mode_deltas[1],
168 .delta_lf_present = frame_header->delta_lf_present,
169 .delta_lf_res = frame_header->delta_lf_res,
170 .delta_lf_multi = frame_header->delta_lf_multi,
173 .lr_type[0] = remap_lr_type[frame_header->lr_type[0]],
174 .lr_type[1] = remap_lr_type[frame_header->lr_type[1]],
175 .lr_type[2] = remap_lr_type[frame_header->lr_type[2]],
176 .lr_unit_size[0] = 1 + frame_header->lr_unit_shift,
177 .lr_unit_size[1] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift,
178 .lr_unit_size[2] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift,
180 /* Reference Frames */
181 .temporal_layer_id = s->cur_frame.temporal_id,
182 .spatial_layer_id = s->cur_frame.spatial_id,
184 /* Film Grain Params */
185 .apply_grain = film_grain->apply_grain,
186 .overlap_flag = film_grain->overlap_flag,
187 .scaling_shift_minus8 = film_grain->grain_scaling_minus_8,
188 .chroma_scaling_from_luma = film_grain->chroma_scaling_from_luma,
189 .ar_coeff_lag = film_grain->ar_coeff_lag,
190 .ar_coeff_shift_minus6 = film_grain->ar_coeff_shift_minus_6,
191 .grain_scale_shift = film_grain->grain_scale_shift,
192 .clip_to_restricted_range = film_grain->clip_to_restricted_range,
193 .num_y_points = film_grain->num_y_points,
194 .num_cb_points = film_grain->num_cb_points,
195 .num_cr_points = film_grain->num_cr_points,
196 .random_seed = film_grain->grain_seed,
197 .cb_mult = film_grain->cb_mult,
198 .cb_luma_mult = film_grain->cb_luma_mult,
199 .cb_offset = film_grain->cb_offset,
200 .cr_mult = film_grain->cr_mult,
201 .cr_luma_mult = film_grain->cr_luma_mult,
202 .cr_offset = film_grain->cr_offset
207 for (i = 0; i < frame_header->tile_cols; ++i) {
208 ppc->tile_widths[i] = frame_header->width_in_sbs_minus_1[i] + 1;
210 for (i = 0; i < frame_header->tile_rows; ++i) {
211 ppc->tile_heights[i] = frame_header->height_in_sbs_minus_1[i] + 1;
215 for (i = 0; i < (1 << frame_header->cdef_bits); ++i) {
216 ppc->cdef_y_strength[i] = (frame_header->cdef_y_pri_strength[i] & 0x0F) | (frame_header->cdef_y_sec_strength[i] << 4);
217 ppc->cdef_uv_strength[i] = (frame_header->cdef_uv_pri_strength[i] & 0x0F) | (frame_header->cdef_uv_sec_strength[i] << 4);
221 for (i = 0; i < AV1_MAX_SEGMENTS; ++i) {
222 ppc->segmentation_feature_mask[i] = 0;
223 for (j = 0; j < AV1_SEG_LVL_MAX; ++j) {
224 ppc->segmentation_feature_mask[i] |= frame_header->feature_enabled[i][j] << j;
225 ppc->segmentation_feature_data[i][j] = frame_header->feature_value[i][j];
229 for (i = 0; i < AV1_NUM_REF_FRAMES; ++i) {
231 ppc->loop_filter_ref_deltas[i] = frame_header->loop_filter_ref_deltas[i];
233 /* Reference Frames */
234 ppc->ref_frame_map[i] = ff_nvdec_get_ref_idx(s->ref[i].tf.f);
237 if (frame_header->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
238 ppc->primary_ref_frame = -1;
240 int8_t pri_ref_idx = frame_header->ref_frame_idx[frame_header->primary_ref_frame];
241 ppc->primary_ref_frame = ppc->ref_frame_map[pri_ref_idx];
244 for (i = 0; i < AV1_REFS_PER_FRAME; ++i) {
246 int8_t ref_idx = frame_header->ref_frame_idx[i];
247 AVFrame *ref_frame = s->ref[ref_idx].tf.f;
249 ppc->ref_frame[i].index = ppc->ref_frame_map[ref_idx];
250 ppc->ref_frame[i].width = ref_frame->width;
251 ppc->ref_frame[i].height = ref_frame->height;
254 ppc->global_motion[i].invalid = !frame_header->is_global[AV1_REF_FRAME_LAST + i];
255 ppc->global_motion[i].wmtype = s->cur_frame.gm_type[AV1_REF_FRAME_LAST + i];
256 for (j = 0; j < 6; ++j) {
257 ppc->global_motion[i].wmmat[j] = s->cur_frame.gm_params[AV1_REF_FRAME_LAST + i][j];
261 /* Film Grain Params */
262 if (film_grain->apply_grain) {
263 for (i = 0; i < 14; ++i) {
264 ppc->scaling_points_y[i][0] = film_grain->point_y_value[i];
265 ppc->scaling_points_y[i][1] = film_grain->point_y_scaling[i];
267 for (i = 0; i < 10; ++i) {
268 ppc->scaling_points_cb[i][0] = film_grain->point_cb_value[i];
269 ppc->scaling_points_cb[i][1] = film_grain->point_cb_scaling[i];
270 ppc->scaling_points_cr[i][0] = film_grain->point_cr_value[i];
271 ppc->scaling_points_cr[i][1] = film_grain->point_cr_scaling[i];
273 for (i = 0; i < 24; ++i) {
274 ppc->ar_coeffs_y[i] = (short)film_grain->ar_coeffs_y_plus_128[i] - 128;
276 for (i = 0; i < 25; ++i) {
277 ppc->ar_coeffs_cb[i] = (short)film_grain->ar_coeffs_cb_plus_128[i] - 128;
278 ppc->ar_coeffs_cr[i] = (short)film_grain->ar_coeffs_cr_plus_128[i] - 128;
285 static int nvdec_av1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
287 const AV1DecContext *s = avctx->priv_data;
288 const AV1RawFrameHeader *frame_header = s->raw_frame_header;
289 NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
292 ctx->nb_slices = frame_header->tile_cols * frame_header->tile_rows;
294 tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated,
295 ctx->nb_slices * 2 * sizeof(*ctx->slice_offsets));
297 return AVERROR(ENOMEM);
299 ctx->slice_offsets = tmp;
301 /* Shortcut if all tiles are in the same buffer */
302 if (ctx->nb_slices == s->tg_end - s->tg_start + 1) {
303 ctx->bitstream = (uint8_t*)buffer;
304 ctx->bitstream_len = size;
306 for (int i = 0; i < ctx->nb_slices; ++i) {
307 ctx->slice_offsets[i*2 ] = s->tile_group_info[i].tile_offset;
308 ctx->slice_offsets[i*2 + 1] = ctx->slice_offsets[i*2] + s->tile_group_info[i].tile_size;
314 tmp = av_fast_realloc(ctx->bitstream_internal, &ctx->bitstream_allocated,
315 ctx->bitstream_len + size);
317 return AVERROR(ENOMEM);
319 ctx->bitstream = ctx->bitstream_internal = tmp;
321 memcpy(ctx->bitstream + ctx->bitstream_len, buffer, size);
323 for (uint32_t tile_num = s->tg_start; tile_num <= s->tg_end; ++tile_num) {
324 ctx->slice_offsets[tile_num*2 ] = ctx->bitstream_len + s->tile_group_info[tile_num].tile_offset;
325 ctx->slice_offsets[tile_num*2 + 1] = ctx->slice_offsets[tile_num*2] + s->tile_group_info[tile_num].tile_size;
327 ctx->bitstream_len += size;
332 static int nvdec_av1_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
334 /* Maximum of 8 reference frames, but potentially stored twice due to film grain */
335 return ff_nvdec_frame_params(avctx, hw_frames_ctx, 8 * 2, 0);
338 const AVHWAccel ff_av1_nvdec_hwaccel = {
340 .type = AVMEDIA_TYPE_VIDEO,
341 .id = AV_CODEC_ID_AV1,
342 .pix_fmt = AV_PIX_FMT_CUDA,
343 .start_frame = nvdec_av1_start_frame,
344 .end_frame = ff_nvdec_simple_end_frame,
345 .decode_slice = nvdec_av1_decode_slice,
346 .frame_params = nvdec_av1_frame_params,
347 .init = ff_nvdec_decode_init,
348 .uninit = ff_nvdec_decode_uninit,
349 .priv_data_size = sizeof(NVDECContext),