1/* 2 * HEVC HW decode acceleration through NVDEC 3 * 4 * Copyright (c) 2017 Anton Khirnov 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 <stdint.h> 24#include <string.h> 25 26#include "avcodec.h" 27#include "nvdec.h" 28#include "decode.h" 29#include "internal.h" 30#include "hevcdec.h" 31#include "hevc_data.h" 32 33static void dpb_add(CUVIDHEVCPICPARAMS *pp, int idx, const HEVCFrame *src) 34{ 35 FrameDecodeData *fdd = (FrameDecodeData*)src->frame->private_ref->data; 36 const NVDECFrame *cf = fdd->hwaccel_priv; 37 38 pp->RefPicIdx[idx] = cf ? cf->idx : -1; 39 pp->PicOrderCntVal[idx] = src->poc; 40 pp->IsLongTerm[idx] = !!(src->flags & HEVC_FRAME_FLAG_LONG_REF); 41} 42 43static void fill_scaling_lists(CUVIDHEVCPICPARAMS *ppc, const HEVCContext *s) 44{ 45 const ScalingList *sl = s->ps.pps->scaling_list_data_present_flag ? 46 &s->ps.pps->scaling_list : &s->ps.sps->scaling_list; 47 int i, j, pos; 48 49 for (i = 0; i < 6; i++) { 50 for (j = 0; j < 16; j++) { 51 pos = 4 * ff_hevc_diag_scan4x4_y[j] + ff_hevc_diag_scan4x4_x[j]; 52 ppc->ScalingList4x4[i][j] = sl->sl[0][i][pos]; 53 } 54 55 for (j = 0; j < 64; j++) { 56 pos = 8 * ff_hevc_diag_scan8x8_y[j] + ff_hevc_diag_scan8x8_x[j]; 57 ppc->ScalingList8x8[i][j] = sl->sl[1][i][pos]; 58 ppc->ScalingList16x16[i][j] = sl->sl[2][i][pos]; 59 60 if (i < 2) 61 ppc->ScalingList32x32[i][j] = sl->sl[3][i * 3][pos]; 62 } 63 64 ppc->ScalingListDCCoeff16x16[i] = sl->sl_dc[0][i]; 65 if (i < 2) 66 ppc->ScalingListDCCoeff32x32[i] = sl->sl_dc[1][i * 3]; 67 } 68} 69 70static int nvdec_hevc_start_frame(AVCodecContext *avctx, 71 const uint8_t *buffer, uint32_t size) 72{ 73 const HEVCContext *s = avctx->priv_data; 74 const HEVCPPS *pps = s->ps.pps; 75 const HEVCSPS *sps = s->ps.sps; 76 77 NVDECContext *ctx = avctx->internal->hwaccel_priv_data; 78 CUVIDPICPARAMS *pp = &ctx->pic_params; 79 CUVIDHEVCPICPARAMS *ppc = &pp->CodecSpecific.hevc; 80 FrameDecodeData *fdd; 81 NVDECFrame *cf; 82 83 int i, j, dpb_size, ret; 84 85 ret = ff_nvdec_start_frame(avctx, s->ref->frame); 86 if (ret < 0) 87 return ret; 88 89 fdd = (FrameDecodeData*)s->ref->frame->private_ref->data; 90 cf = (NVDECFrame*)fdd->hwaccel_priv; 91 92 *pp = (CUVIDPICPARAMS) { 93 .PicWidthInMbs = sps->width / 16, 94 .FrameHeightInMbs = sps->height / 16, 95 .CurrPicIdx = cf->idx, 96 .ref_pic_flag = 1, 97 .intra_pic_flag = IS_IRAP(s), 98 99 .CodecSpecific.hevc = { 100 .pic_width_in_luma_samples = sps->width, 101 .pic_height_in_luma_samples = sps->height, 102 .log2_min_luma_coding_block_size_minus3 = sps->log2_min_cb_size - 3, 103 .log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_coding_block_size, 104 .log2_min_transform_block_size_minus2 = sps->log2_min_tb_size - 2, 105 .log2_diff_max_min_transform_block_size = sps->log2_max_trafo_size - sps->log2_min_tb_size, 106 .pcm_enabled_flag = sps->pcm_enabled_flag, 107 .log2_min_pcm_luma_coding_block_size_minus3 = sps->pcm_enabled_flag ? sps->pcm.log2_min_pcm_cb_size - 3 : 0, 108 .log2_diff_max_min_pcm_luma_coding_block_size = sps->pcm.log2_max_pcm_cb_size - sps->pcm.log2_min_pcm_cb_size, 109 .pcm_sample_bit_depth_luma_minus1 = sps->pcm_enabled_flag ? sps->pcm.bit_depth - 1 : 0, 110 .pcm_sample_bit_depth_chroma_minus1 = sps->pcm_enabled_flag ? sps->pcm.bit_depth_chroma - 1 : 0, 111#if NVDECAPI_CHECK_VERSION(8, 1) 112 .log2_max_transform_skip_block_size_minus2 = pps->log2_max_transform_skip_block_size - 2, 113 .log2_sao_offset_scale_luma = pps->log2_sao_offset_scale_luma, 114 .log2_sao_offset_scale_chroma = pps->log2_sao_offset_scale_chroma, 115 .high_precision_offsets_enabled_flag = sps->high_precision_offsets_enabled_flag, 116#endif 117 .pcm_loop_filter_disabled_flag = sps->pcm.loop_filter_disable_flag, 118 .strong_intra_smoothing_enabled_flag = sps->sps_strong_intra_smoothing_enable_flag, 119 .max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra, 120 .max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter, 121 .amp_enabled_flag = sps->amp_enabled_flag, 122 .separate_colour_plane_flag = sps->separate_colour_plane_flag, 123 .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4, 124 .num_short_term_ref_pic_sets = sps->nb_st_rps, 125 .long_term_ref_pics_present_flag = sps->long_term_ref_pics_present_flag, 126 .num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps, 127 .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag, 128 .sample_adaptive_offset_enabled_flag = sps->sao_enabled, 129 .scaling_list_enable_flag = sps->scaling_list_enable_flag, 130 .IrapPicFlag = IS_IRAP(s), 131 .IdrPicFlag = IS_IDR(s), 132 .bit_depth_luma_minus8 = sps->bit_depth - 8, 133 .bit_depth_chroma_minus8 = sps->bit_depth - 8, 134#if NVDECAPI_CHECK_VERSION(9, 0) 135 .sps_range_extension_flag = sps->sps_range_extension_flag, 136 .transform_skip_rotation_enabled_flag = sps->transform_skip_rotation_enabled_flag, 137 .transform_skip_context_enabled_flag = sps->transform_skip_context_enabled_flag, 138 .implicit_rdpcm_enabled_flag = sps->implicit_rdpcm_enabled_flag, 139 .explicit_rdpcm_enabled_flag = sps->explicit_rdpcm_enabled_flag, 140 .extended_precision_processing_flag = sps->extended_precision_processing_flag, 141 .intra_smoothing_disabled_flag = sps->intra_smoothing_disabled_flag, 142 .persistent_rice_adaptation_enabled_flag = sps->persistent_rice_adaptation_enabled_flag, 143 .cabac_bypass_alignment_enabled_flag = sps->cabac_bypass_alignment_enabled_flag, 144#endif 145 146 .dependent_slice_segments_enabled_flag = pps->dependent_slice_segments_enabled_flag, 147 .slice_segment_header_extension_present_flag = pps->slice_header_extension_present_flag, 148 .sign_data_hiding_enabled_flag = pps->sign_data_hiding_flag, 149 .cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag, 150 .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth, 151 .init_qp_minus26 = pps->pic_init_qp_minus26, 152 .pps_cb_qp_offset = pps->cb_qp_offset, 153 .pps_cr_qp_offset = pps->cr_qp_offset, 154 .constrained_intra_pred_flag = pps->constrained_intra_pred_flag, 155 .weighted_pred_flag = pps->weighted_pred_flag, 156 .weighted_bipred_flag = pps->weighted_bipred_flag, 157 .transform_skip_enabled_flag = pps->transform_skip_enabled_flag, 158 .transquant_bypass_enabled_flag = pps->transquant_bypass_enable_flag, 159 .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag, 160 .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level - 2, 161 .num_extra_slice_header_bits = pps->num_extra_slice_header_bits, 162 .loop_filter_across_tiles_enabled_flag = pps->loop_filter_across_tiles_enabled_flag, 163 .loop_filter_across_slices_enabled_flag = pps->seq_loop_filter_across_slices_enabled_flag, 164 .output_flag_present_flag = pps->output_flag_present_flag, 165 .num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active - 1, 166 .num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active - 1, 167 .lists_modification_present_flag = pps->lists_modification_present_flag, 168 .cabac_init_present_flag = pps->cabac_init_present_flag, 169 .pps_slice_chroma_qp_offsets_present_flag = pps->pic_slice_level_chroma_qp_offsets_present_flag, 170 .deblocking_filter_override_enabled_flag = pps->deblocking_filter_override_enabled_flag, 171 .pps_deblocking_filter_disabled_flag = pps->disable_dbf, 172 .pps_beta_offset_div2 = pps->beta_offset / 2, 173 .pps_tc_offset_div2 = pps->tc_offset / 2, 174 .tiles_enabled_flag = pps->tiles_enabled_flag, 175 .uniform_spacing_flag = pps->uniform_spacing_flag, 176 .num_tile_columns_minus1 = pps->num_tile_columns - 1, 177 .num_tile_rows_minus1 = pps->num_tile_rows - 1, 178#if NVDECAPI_CHECK_VERSION(9, 0) 179 .pps_range_extension_flag = pps->pps_range_extensions_flag, 180 .cross_component_prediction_enabled_flag = pps->cross_component_prediction_enabled_flag, 181 .chroma_qp_offset_list_enabled_flag = pps->chroma_qp_offset_list_enabled_flag, 182 .diff_cu_chroma_qp_offset_depth = pps->diff_cu_chroma_qp_offset_depth, 183 .chroma_qp_offset_list_len_minus1 = pps->chroma_qp_offset_list_len_minus1, 184#endif 185 186 .NumBitsForShortTermRPSInSlice = s->sh.short_term_rps ? s->sh.short_term_ref_pic_set_size : 0, 187 .NumDeltaPocsOfRefRpsIdx = s->sh.short_term_rps ? s->sh.short_term_rps->rps_idx_num_delta_pocs : 0, 188 .NumPocTotalCurr = ff_hevc_frame_nb_refs(s), 189 .NumPocStCurrBefore = s->rps[ST_CURR_BEF].nb_refs, 190 .NumPocStCurrAfter = s->rps[ST_CURR_AFT].nb_refs, 191 .NumPocLtCurr = s->rps[LT_CURR].nb_refs, 192 .CurrPicOrderCntVal = s->ref->poc, 193 }, 194 }; 195 196 if (pps->num_tile_columns > FF_ARRAY_ELEMS(ppc->column_width_minus1) || 197 pps->num_tile_rows > FF_ARRAY_ELEMS(ppc->row_height_minus1)) { 198 av_log(avctx, AV_LOG_ERROR, "Too many tiles\n"); 199 return AVERROR(ENOSYS); 200 } 201 for (i = 0; i < pps->num_tile_columns; i++) 202 ppc->column_width_minus1[i] = pps->column_width[i] - 1; 203 for (i = 0; i < pps->num_tile_rows; i++) 204 ppc->row_height_minus1[i] = pps->row_height[i] - 1; 205 206#if NVDECAPI_CHECK_VERSION(9, 0) 207 if (pps->chroma_qp_offset_list_len_minus1 > FF_ARRAY_ELEMS(ppc->cb_qp_offset_list) || 208 pps->chroma_qp_offset_list_len_minus1 > FF_ARRAY_ELEMS(ppc->cr_qp_offset_list)) { 209 av_log(avctx, AV_LOG_ERROR, "Too many chroma_qp_offsets\n"); 210 return AVERROR(ENOSYS); 211 } 212 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) { 213 ppc->cb_qp_offset_list[i] = pps->cb_qp_offset_list[i]; 214 ppc->cr_qp_offset_list[i] = pps->cr_qp_offset_list[i]; 215 } 216#endif 217 218 if (s->rps[LT_CURR].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetLtCurr) || 219 s->rps[ST_CURR_BEF].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetStCurrBefore) || 220 s->rps[ST_CURR_AFT].nb_refs > FF_ARRAY_ELEMS(ppc->RefPicSetStCurrAfter)) { 221 av_log(avctx, AV_LOG_ERROR, "Too many reference frames\n"); 222 return AVERROR(ENOSYS); 223 } 224 225 dpb_size = 0; 226 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { 227 const HEVCFrame *ref = &s->DPB[i]; 228 if (!(ref->flags & (HEVC_FRAME_FLAG_SHORT_REF | HEVC_FRAME_FLAG_LONG_REF))) 229 continue; 230 if (dpb_size >= FF_ARRAY_ELEMS(ppc->RefPicIdx)) { 231 av_log(avctx, AV_LOG_ERROR, "Too many reference frames\n"); 232 return AVERROR_INVALIDDATA; 233 } 234 dpb_add(ppc, dpb_size++, ref); 235 236 } 237 for (i = dpb_size; i < FF_ARRAY_ELEMS(ppc->RefPicIdx); i++) 238 ppc->RefPicIdx[i] = -1; 239 240 for (i = 0; i < s->rps[ST_CURR_BEF].nb_refs; i++) { 241 for (j = 0; j < dpb_size; j++) { 242 if (ppc->PicOrderCntVal[j] == s->rps[ST_CURR_BEF].list[i]) { 243 ppc->RefPicSetStCurrBefore[i] = j; 244 break; 245 } 246 } 247 } 248 for (i = 0; i < s->rps[ST_CURR_AFT].nb_refs; i++) { 249 for (j = 0; j < dpb_size; j++) { 250 if (ppc->PicOrderCntVal[j] == s->rps[ST_CURR_AFT].list[i]) { 251 ppc->RefPicSetStCurrAfter[i] = j; 252 break; 253 } 254 } 255 } 256 for (i = 0; i < s->rps[LT_CURR].nb_refs; i++) { 257 for (j = 0; j < dpb_size; j++) { 258 if (ppc->PicOrderCntVal[j] == s->rps[LT_CURR].list[i]) { 259 ppc->RefPicSetLtCurr[i] = j; 260 break; 261 } 262 } 263 } 264 265 fill_scaling_lists(ppc, s); 266 267 return 0; 268} 269 270static int nvdec_hevc_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, 271 uint32_t size) 272{ 273 NVDECContext *ctx = avctx->internal->hwaccel_priv_data; 274 void *tmp; 275 276 tmp = av_fast_realloc(ctx->bitstream, &ctx->bitstream_allocated, 277 ctx->bitstream_len + size + 3); 278 if (!tmp) 279 return AVERROR(ENOMEM); 280 ctx->bitstream = tmp; 281 282 tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated, 283 (ctx->nb_slices + 1) * sizeof(*ctx->slice_offsets)); 284 if (!tmp) 285 return AVERROR(ENOMEM); 286 ctx->slice_offsets = tmp; 287 288 AV_WB24(ctx->bitstream + ctx->bitstream_len, 1); 289 memcpy(ctx->bitstream + ctx->bitstream_len + 3, buffer, size); 290 ctx->slice_offsets[ctx->nb_slices] = ctx->bitstream_len ; 291 ctx->bitstream_len += size + 3; 292 ctx->nb_slices++; 293 294 return 0; 295} 296 297static int nvdec_hevc_frame_params(AVCodecContext *avctx, 298 AVBufferRef *hw_frames_ctx) 299{ 300 const HEVCContext *s = avctx->priv_data; 301 const HEVCSPS *sps = s->ps.sps; 302 return ff_nvdec_frame_params(avctx, hw_frames_ctx, sps->temporal_layer[sps->max_sub_layers - 1].max_dec_pic_buffering + 1, 1); 303} 304 305static int nvdec_hevc_decode_init(AVCodecContext *avctx) { 306 NVDECContext *ctx = avctx->internal->hwaccel_priv_data; 307 ctx->supports_444 = 1; 308 return ff_nvdec_decode_init(avctx); 309} 310 311const AVHWAccel ff_hevc_nvdec_hwaccel = { 312 .name = "hevc_nvdec", 313 .type = AVMEDIA_TYPE_VIDEO, 314 .id = AV_CODEC_ID_HEVC, 315 .pix_fmt = AV_PIX_FMT_CUDA, 316 .start_frame = nvdec_hevc_start_frame, 317 .end_frame = ff_nvdec_end_frame, 318 .decode_slice = nvdec_hevc_decode_slice, 319 .frame_params = nvdec_hevc_frame_params, 320 .init = nvdec_hevc_decode_init, 321 .uninit = ff_nvdec_decode_uninit, 322 .priv_data_size = sizeof(NVDECContext), 323}; 324