| 1 | /* |
| 2 | * DXVA2 H264 HW acceleration. |
| 3 | * |
| 4 | * copyright (c) 2009 Laurent Aimar |
| 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 "dxva2_internal.h" |
| 24 | #include "h264.h" |
| 25 | #include "h264data.h" |
| 26 | #include "mpegutils.h" |
| 27 | |
| 28 | struct dxva2_picture_context { |
| 29 | DXVA_PicParams_H264 pp; |
| 30 | DXVA_Qmatrix_H264 qm; |
| 31 | unsigned slice_count; |
| 32 | DXVA_Slice_H264_Short slice_short[MAX_SLICES]; |
| 33 | DXVA_Slice_H264_Long slice_long[MAX_SLICES]; |
| 34 | const uint8_t *bitstream; |
| 35 | unsigned bitstream_size; |
| 36 | }; |
| 37 | |
| 38 | static void fill_picture_entry(DXVA_PicEntry_H264 *pic, |
| 39 | unsigned index, unsigned flag) |
| 40 | { |
| 41 | assert((index&0x7f) == index && (flag&0x01) == flag); |
| 42 | pic->bPicEntry = index | (flag << 7); |
| 43 | } |
| 44 | |
| 45 | static void fill_picture_parameters(struct dxva_context *ctx, const H264Context *h, |
| 46 | DXVA_PicParams_H264 *pp) |
| 47 | { |
| 48 | const H264Picture *current_picture = h->cur_pic_ptr; |
| 49 | int i, j; |
| 50 | |
| 51 | memset(pp, 0, sizeof(*pp)); |
| 52 | /* Configure current picture */ |
| 53 | fill_picture_entry(&pp->CurrPic, |
| 54 | ff_dxva2_get_surface_index(ctx, ¤t_picture->f), |
| 55 | h->picture_structure == PICT_BOTTOM_FIELD); |
| 56 | /* Configure the set of references */ |
| 57 | pp->UsedForReferenceFlags = 0; |
| 58 | pp->NonExistingFrameFlags = 0; |
| 59 | for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) { |
| 60 | const H264Picture *r; |
| 61 | if (j < h->short_ref_count) { |
| 62 | r = h->short_ref[j++]; |
| 63 | } else { |
| 64 | r = NULL; |
| 65 | while (!r && j < h->short_ref_count + 16) |
| 66 | r = h->long_ref[j++ - h->short_ref_count]; |
| 67 | } |
| 68 | if (r) { |
| 69 | fill_picture_entry(&pp->RefFrameList[i], |
| 70 | ff_dxva2_get_surface_index(ctx, &r->f), |
| 71 | r->long_ref != 0); |
| 72 | |
| 73 | if ((r->reference & PICT_TOP_FIELD) && r->field_poc[0] != INT_MAX) |
| 74 | pp->FieldOrderCntList[i][0] = r->field_poc[0]; |
| 75 | if ((r->reference & PICT_BOTTOM_FIELD) && r->field_poc[1] != INT_MAX) |
| 76 | pp->FieldOrderCntList[i][1] = r->field_poc[1]; |
| 77 | |
| 78 | pp->FrameNumList[i] = r->long_ref ? r->pic_id : r->frame_num; |
| 79 | if (r->reference & PICT_TOP_FIELD) |
| 80 | pp->UsedForReferenceFlags |= 1 << (2*i + 0); |
| 81 | if (r->reference & PICT_BOTTOM_FIELD) |
| 82 | pp->UsedForReferenceFlags |= 1 << (2*i + 1); |
| 83 | } else { |
| 84 | pp->RefFrameList[i].bPicEntry = 0xff; |
| 85 | pp->FieldOrderCntList[i][0] = 0; |
| 86 | pp->FieldOrderCntList[i][1] = 0; |
| 87 | pp->FrameNumList[i] = 0; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | pp->wFrameWidthInMbsMinus1 = h->mb_width - 1; |
| 92 | pp->wFrameHeightInMbsMinus1 = h->mb_height - 1; |
| 93 | pp->num_ref_frames = h->sps.ref_frame_count; |
| 94 | |
| 95 | pp->wBitFields = ((h->picture_structure != PICT_FRAME) << 0) | |
| 96 | ((h->sps.mb_aff && |
| 97 | (h->picture_structure == PICT_FRAME)) << 1) | |
| 98 | (h->sps.residual_color_transform_flag << 2) | |
| 99 | /* sp_for_switch_flag (not implemented by FFmpeg) */ |
| 100 | (0 << 3) | |
| 101 | (h->sps.chroma_format_idc << 4) | |
| 102 | ((h->nal_ref_idc != 0) << 6) | |
| 103 | (h->pps.constrained_intra_pred << 7) | |
| 104 | (h->pps.weighted_pred << 8) | |
| 105 | (h->pps.weighted_bipred_idc << 9) | |
| 106 | /* MbsConsecutiveFlag */ |
| 107 | (1 << 11) | |
| 108 | (h->sps.frame_mbs_only_flag << 12) | |
| 109 | (h->pps.transform_8x8_mode << 13) | |
| 110 | ((h->sps.level_idc >= 31) << 14) | |
| 111 | /* IntraPicFlag (Modified if we detect a non |
| 112 | * intra slice in dxva2_h264_decode_slice) */ |
| 113 | (1 << 15); |
| 114 | |
| 115 | pp->bit_depth_luma_minus8 = h->sps.bit_depth_luma - 8; |
| 116 | pp->bit_depth_chroma_minus8 = h->sps.bit_depth_chroma - 8; |
| 117 | if (ctx->workaround & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG) |
| 118 | pp->Reserved16Bits = 0; |
| 119 | else if (ctx->workaround & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO) |
| 120 | pp->Reserved16Bits = 0x34c; |
| 121 | else |
| 122 | pp->Reserved16Bits = 3; /* FIXME is there a way to detect the right mode ? */ |
| 123 | pp->StatusReportFeedbackNumber = 1 + ctx->report_id++; |
| 124 | pp->CurrFieldOrderCnt[0] = 0; |
| 125 | if ((h->picture_structure & PICT_TOP_FIELD) && |
| 126 | current_picture->field_poc[0] != INT_MAX) |
| 127 | pp->CurrFieldOrderCnt[0] = current_picture->field_poc[0]; |
| 128 | pp->CurrFieldOrderCnt[1] = 0; |
| 129 | if ((h->picture_structure & PICT_BOTTOM_FIELD) && |
| 130 | current_picture->field_poc[1] != INT_MAX) |
| 131 | pp->CurrFieldOrderCnt[1] = current_picture->field_poc[1]; |
| 132 | pp->pic_init_qs_minus26 = h->pps.init_qs - 26; |
| 133 | pp->chroma_qp_index_offset = h->pps.chroma_qp_index_offset[0]; |
| 134 | pp->second_chroma_qp_index_offset = h->pps.chroma_qp_index_offset[1]; |
| 135 | pp->ContinuationFlag = 1; |
| 136 | pp->pic_init_qp_minus26 = h->pps.init_qp - 26; |
| 137 | pp->num_ref_idx_l0_active_minus1 = h->pps.ref_count[0] - 1; |
| 138 | pp->num_ref_idx_l1_active_minus1 = h->pps.ref_count[1] - 1; |
| 139 | pp->Reserved8BitsA = 0; |
| 140 | pp->frame_num = h->frame_num; |
| 141 | pp->log2_max_frame_num_minus4 = h->sps.log2_max_frame_num - 4; |
| 142 | pp->pic_order_cnt_type = h->sps.poc_type; |
| 143 | if (h->sps.poc_type == 0) |
| 144 | pp->log2_max_pic_order_cnt_lsb_minus4 = h->sps.log2_max_poc_lsb - 4; |
| 145 | else if (h->sps.poc_type == 1) |
| 146 | pp->delta_pic_order_always_zero_flag = h->sps.delta_pic_order_always_zero_flag; |
| 147 | pp->direct_8x8_inference_flag = h->sps.direct_8x8_inference_flag; |
| 148 | pp->entropy_coding_mode_flag = h->pps.cabac; |
| 149 | pp->pic_order_present_flag = h->pps.pic_order_present; |
| 150 | pp->num_slice_groups_minus1 = h->pps.slice_group_count - 1; |
| 151 | pp->slice_group_map_type = h->pps.mb_slice_group_map_type; |
| 152 | pp->deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present; |
| 153 | pp->redundant_pic_cnt_present_flag= h->pps.redundant_pic_cnt_present; |
| 154 | pp->Reserved8BitsB = 0; |
| 155 | pp->slice_group_change_rate_minus1= 0; /* XXX not implemented by FFmpeg */ |
| 156 | //pp->SliceGroupMap[810]; /* XXX not implemented by FFmpeg */ |
| 157 | } |
| 158 | |
| 159 | static void fill_scaling_lists(struct dxva_context *ctx, const H264Context *h, DXVA_Qmatrix_H264 *qm) |
| 160 | { |
| 161 | unsigned i, j; |
| 162 | memset(qm, 0, sizeof(*qm)); |
| 163 | if (ctx->workaround & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG) { |
| 164 | for (i = 0; i < 6; i++) |
| 165 | for (j = 0; j < 16; j++) |
| 166 | qm->bScalingLists4x4[i][j] = h->pps.scaling_matrix4[i][j]; |
| 167 | |
| 168 | for (i = 0; i < 64; i++) { |
| 169 | qm->bScalingLists8x8[0][i] = h->pps.scaling_matrix8[0][i]; |
| 170 | qm->bScalingLists8x8[1][i] = h->pps.scaling_matrix8[3][i]; |
| 171 | } |
| 172 | } else { |
| 173 | for (i = 0; i < 6; i++) |
| 174 | for (j = 0; j < 16; j++) |
| 175 | qm->bScalingLists4x4[i][j] = h->pps.scaling_matrix4[i][zigzag_scan[j]]; |
| 176 | |
| 177 | for (i = 0; i < 64; i++) { |
| 178 | qm->bScalingLists8x8[0][i] = h->pps.scaling_matrix8[0][ff_zigzag_direct[i]]; |
| 179 | qm->bScalingLists8x8[1][i] = h->pps.scaling_matrix8[3][ff_zigzag_direct[i]]; |
| 180 | } |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | static int is_slice_short(struct dxva_context *ctx) |
| 185 | { |
| 186 | assert(ctx->cfg->ConfigBitstreamRaw == 1 || |
| 187 | ctx->cfg->ConfigBitstreamRaw == 2); |
| 188 | return ctx->cfg->ConfigBitstreamRaw == 2; |
| 189 | } |
| 190 | |
| 191 | static void fill_slice_short(DXVA_Slice_H264_Short *slice, |
| 192 | unsigned position, unsigned size) |
| 193 | { |
| 194 | memset(slice, 0, sizeof(*slice)); |
| 195 | slice->BSNALunitDataLocation = position; |
| 196 | slice->SliceBytesInBuffer = size; |
| 197 | slice->wBadSliceChopping = 0; |
| 198 | } |
| 199 | |
| 200 | static int get_refpic_index(const DXVA_PicParams_H264 *pp, int surface_index) |
| 201 | { |
| 202 | int i; |
| 203 | for (i = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) { |
| 204 | if ((pp->RefFrameList[i].bPicEntry & 0x7f) == surface_index) |
| 205 | return i; |
| 206 | } |
| 207 | return 0x7f; |
| 208 | } |
| 209 | |
| 210 | static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice, |
| 211 | const DXVA_PicParams_H264 *pp, unsigned position, unsigned size) |
| 212 | { |
| 213 | const H264Context *h = avctx->priv_data; |
| 214 | struct dxva_context *ctx = avctx->hwaccel_context; |
| 215 | unsigned list; |
| 216 | |
| 217 | memset(slice, 0, sizeof(*slice)); |
| 218 | slice->BSNALunitDataLocation = position; |
| 219 | slice->SliceBytesInBuffer = size; |
| 220 | slice->wBadSliceChopping = 0; |
| 221 | |
| 222 | slice->first_mb_in_slice = (h->mb_y >> FIELD_OR_MBAFF_PICTURE(h)) * h->mb_width + h->mb_x; |
| 223 | slice->NumMbsForSlice = 0; /* XXX it is set once we have all slices */ |
| 224 | slice->BitOffsetToSliceData = get_bits_count(&h->gb); |
| 225 | slice->slice_type = ff_h264_get_slice_type(h); |
| 226 | if (h->slice_type_fixed) |
| 227 | slice->slice_type += 5; |
| 228 | slice->luma_log2_weight_denom = h->luma_log2_weight_denom; |
| 229 | slice->chroma_log2_weight_denom = h->chroma_log2_weight_denom; |
| 230 | if (h->list_count > 0) |
| 231 | slice->num_ref_idx_l0_active_minus1 = h->ref_count[0] - 1; |
| 232 | if (h->list_count > 1) |
| 233 | slice->num_ref_idx_l1_active_minus1 = h->ref_count[1] - 1; |
| 234 | slice->slice_alpha_c0_offset_div2 = h->slice_alpha_c0_offset / 2; |
| 235 | slice->slice_beta_offset_div2 = h->slice_beta_offset / 2; |
| 236 | slice->Reserved8Bits = 0; |
| 237 | |
| 238 | for (list = 0; list < 2; list++) { |
| 239 | unsigned i; |
| 240 | for (i = 0; i < FF_ARRAY_ELEMS(slice->RefPicList[list]); i++) { |
| 241 | if (list < h->list_count && i < h->ref_count[list]) { |
| 242 | const H264Picture *r = &h->ref_list[list][i]; |
| 243 | unsigned plane; |
| 244 | unsigned index; |
| 245 | if (ctx->workaround & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO) |
| 246 | index = ff_dxva2_get_surface_index(ctx, &r->f); |
| 247 | else |
| 248 | index = get_refpic_index(pp, ff_dxva2_get_surface_index(ctx, &r->f)); |
| 249 | fill_picture_entry(&slice->RefPicList[list][i], index, |
| 250 | r->reference == PICT_BOTTOM_FIELD); |
| 251 | for (plane = 0; plane < 3; plane++) { |
| 252 | int w, o; |
| 253 | if (plane == 0 && h->luma_weight_flag[list]) { |
| 254 | w = h->luma_weight[i][list][0]; |
| 255 | o = h->luma_weight[i][list][1]; |
| 256 | } else if (plane >= 1 && h->chroma_weight_flag[list]) { |
| 257 | w = h->chroma_weight[i][list][plane-1][0]; |
| 258 | o = h->chroma_weight[i][list][plane-1][1]; |
| 259 | } else { |
| 260 | w = 1 << (plane == 0 ? h->luma_log2_weight_denom : |
| 261 | h->chroma_log2_weight_denom); |
| 262 | o = 0; |
| 263 | } |
| 264 | slice->Weights[list][i][plane][0] = w; |
| 265 | slice->Weights[list][i][plane][1] = o; |
| 266 | } |
| 267 | } else { |
| 268 | unsigned plane; |
| 269 | slice->RefPicList[list][i].bPicEntry = 0xff; |
| 270 | for (plane = 0; plane < 3; plane++) { |
| 271 | slice->Weights[list][i][plane][0] = 0; |
| 272 | slice->Weights[list][i][plane][1] = 0; |
| 273 | } |
| 274 | } |
| 275 | } |
| 276 | } |
| 277 | slice->slice_qs_delta = 0; /* XXX not implemented by FFmpeg */ |
| 278 | slice->slice_qp_delta = h->qscale - h->pps.init_qp; |
| 279 | slice->redundant_pic_cnt = h->redundant_pic_count; |
| 280 | if (h->slice_type == AV_PICTURE_TYPE_B) |
| 281 | slice->direct_spatial_mv_pred_flag = h->direct_spatial_mv_pred; |
| 282 | slice->cabac_init_idc = h->pps.cabac ? h->cabac_init_idc : 0; |
| 283 | if (h->deblocking_filter < 2) |
| 284 | slice->disable_deblocking_filter_idc = 1 - h->deblocking_filter; |
| 285 | else |
| 286 | slice->disable_deblocking_filter_idc = h->deblocking_filter; |
| 287 | slice->slice_id = h->current_slice - 1; |
| 288 | } |
| 289 | |
| 290 | static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx, |
| 291 | DXVA2_DecodeBufferDesc *bs, |
| 292 | DXVA2_DecodeBufferDesc *sc) |
| 293 | { |
| 294 | const H264Context *h = avctx->priv_data; |
| 295 | const unsigned mb_count = h->mb_width * h->mb_height; |
| 296 | struct dxva_context *ctx = avctx->hwaccel_context; |
| 297 | const H264Picture *current_picture = h->cur_pic_ptr; |
| 298 | struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private; |
| 299 | DXVA_Slice_H264_Short *slice = NULL; |
| 300 | void *dxva_data_ptr; |
| 301 | uint8_t *dxva_data, *current, *end; |
| 302 | unsigned dxva_size; |
| 303 | void *slice_data; |
| 304 | unsigned slice_size; |
| 305 | unsigned padding; |
| 306 | unsigned i; |
| 307 | |
| 308 | /* Create an annex B bitstream buffer with only slice NAL and finalize slice */ |
| 309 | if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, |
| 310 | DXVA2_BitStreamDateBufferType, |
| 311 | &dxva_data_ptr, &dxva_size))) |
| 312 | return -1; |
| 313 | |
| 314 | dxva_data = dxva_data_ptr; |
| 315 | current = dxva_data; |
| 316 | end = dxva_data + dxva_size; |
| 317 | |
| 318 | for (i = 0; i < ctx_pic->slice_count; i++) { |
| 319 | static const uint8_t start_code[] = { 0, 0, 1 }; |
| 320 | static const unsigned start_code_size = sizeof(start_code); |
| 321 | unsigned position, size; |
| 322 | |
| 323 | assert(offsetof(DXVA_Slice_H264_Short, BSNALunitDataLocation) == |
| 324 | offsetof(DXVA_Slice_H264_Long, BSNALunitDataLocation)); |
| 325 | assert(offsetof(DXVA_Slice_H264_Short, SliceBytesInBuffer) == |
| 326 | offsetof(DXVA_Slice_H264_Long, SliceBytesInBuffer)); |
| 327 | |
| 328 | if (is_slice_short(ctx)) |
| 329 | slice = &ctx_pic->slice_short[i]; |
| 330 | else |
| 331 | slice = (DXVA_Slice_H264_Short*)&ctx_pic->slice_long[i]; |
| 332 | |
| 333 | position = slice->BSNALunitDataLocation; |
| 334 | size = slice->SliceBytesInBuffer; |
| 335 | if (start_code_size + size > end - current) { |
| 336 | av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream"); |
| 337 | break; |
| 338 | } |
| 339 | |
| 340 | slice->BSNALunitDataLocation = current - dxva_data; |
| 341 | slice->SliceBytesInBuffer = start_code_size + size; |
| 342 | |
| 343 | if (!is_slice_short(ctx)) { |
| 344 | DXVA_Slice_H264_Long *slice_long = (DXVA_Slice_H264_Long*)slice; |
| 345 | if (i < ctx_pic->slice_count - 1) |
| 346 | slice_long->NumMbsForSlice = |
| 347 | slice_long[1].first_mb_in_slice - slice_long[0].first_mb_in_slice; |
| 348 | else |
| 349 | slice_long->NumMbsForSlice = mb_count - slice_long->first_mb_in_slice; |
| 350 | } |
| 351 | |
| 352 | memcpy(current, start_code, start_code_size); |
| 353 | current += start_code_size; |
| 354 | |
| 355 | memcpy(current, &ctx_pic->bitstream[position], size); |
| 356 | current += size; |
| 357 | } |
| 358 | padding = FFMIN(128 - ((current - dxva_data) & 127), end - current); |
| 359 | if (slice && padding > 0) { |
| 360 | memset(current, 0, padding); |
| 361 | current += padding; |
| 362 | |
| 363 | slice->SliceBytesInBuffer += padding; |
| 364 | } |
| 365 | if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, |
| 366 | DXVA2_BitStreamDateBufferType))) |
| 367 | return -1; |
| 368 | if (i < ctx_pic->slice_count) |
| 369 | return -1; |
| 370 | |
| 371 | memset(bs, 0, sizeof(*bs)); |
| 372 | bs->CompressedBufferType = DXVA2_BitStreamDateBufferType; |
| 373 | bs->DataSize = current - dxva_data; |
| 374 | bs->NumMBsInBuffer = mb_count; |
| 375 | |
| 376 | if (is_slice_short(ctx)) { |
| 377 | slice_data = ctx_pic->slice_short; |
| 378 | slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short); |
| 379 | } else { |
| 380 | slice_data = ctx_pic->slice_long; |
| 381 | slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_long); |
| 382 | } |
| 383 | assert((bs->DataSize & 127) == 0); |
| 384 | return ff_dxva2_commit_buffer(avctx, ctx, sc, |
| 385 | DXVA2_SliceControlBufferType, |
| 386 | slice_data, slice_size, mb_count); |
| 387 | } |
| 388 | |
| 389 | |
| 390 | static int dxva2_h264_start_frame(AVCodecContext *avctx, |
| 391 | av_unused const uint8_t *buffer, |
| 392 | av_unused uint32_t size) |
| 393 | { |
| 394 | const H264Context *h = avctx->priv_data; |
| 395 | struct dxva_context *ctx = avctx->hwaccel_context; |
| 396 | struct dxva2_picture_context *ctx_pic = h->cur_pic_ptr->hwaccel_picture_private; |
| 397 | |
| 398 | if (!ctx->decoder || !ctx->cfg || ctx->surface_count <= 0) |
| 399 | return -1; |
| 400 | assert(ctx_pic); |
| 401 | |
| 402 | /* Fill up DXVA_PicParams_H264 */ |
| 403 | fill_picture_parameters(ctx, h, &ctx_pic->pp); |
| 404 | |
| 405 | /* Fill up DXVA_Qmatrix_H264 */ |
| 406 | fill_scaling_lists(ctx, h, &ctx_pic->qm); |
| 407 | |
| 408 | ctx_pic->slice_count = 0; |
| 409 | ctx_pic->bitstream_size = 0; |
| 410 | ctx_pic->bitstream = NULL; |
| 411 | return 0; |
| 412 | } |
| 413 | |
| 414 | static int dxva2_h264_decode_slice(AVCodecContext *avctx, |
| 415 | const uint8_t *buffer, |
| 416 | uint32_t size) |
| 417 | { |
| 418 | const H264Context *h = avctx->priv_data; |
| 419 | struct dxva_context *ctx = avctx->hwaccel_context; |
| 420 | const H264Picture *current_picture = h->cur_pic_ptr; |
| 421 | struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private; |
| 422 | unsigned position; |
| 423 | |
| 424 | if (ctx_pic->slice_count >= MAX_SLICES) |
| 425 | return -1; |
| 426 | |
| 427 | if (!ctx_pic->bitstream) |
| 428 | ctx_pic->bitstream = buffer; |
| 429 | ctx_pic->bitstream_size += size; |
| 430 | |
| 431 | position = buffer - ctx_pic->bitstream; |
| 432 | if (is_slice_short(ctx)) |
| 433 | fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count], |
| 434 | position, size); |
| 435 | else |
| 436 | fill_slice_long(avctx, &ctx_pic->slice_long[ctx_pic->slice_count], |
| 437 | &ctx_pic->pp, position, size); |
| 438 | ctx_pic->slice_count++; |
| 439 | |
| 440 | if (h->slice_type != AV_PICTURE_TYPE_I && h->slice_type != AV_PICTURE_TYPE_SI) |
| 441 | ctx_pic->pp.wBitFields &= ~(1 << 15); /* Set IntraPicFlag to 0 */ |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | static int dxva2_h264_end_frame(AVCodecContext *avctx) |
| 446 | { |
| 447 | H264Context *h = avctx->priv_data; |
| 448 | struct dxva2_picture_context *ctx_pic = |
| 449 | h->cur_pic_ptr->hwaccel_picture_private; |
| 450 | int ret; |
| 451 | |
| 452 | if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0) |
| 453 | return -1; |
| 454 | ret = ff_dxva2_common_end_frame(avctx, &h->cur_pic_ptr->f, |
| 455 | &ctx_pic->pp, sizeof(ctx_pic->pp), |
| 456 | &ctx_pic->qm, sizeof(ctx_pic->qm), |
| 457 | commit_bitstream_and_slice_buffer); |
| 458 | if (!ret) |
| 459 | ff_h264_draw_horiz_band(h, 0, h->avctx->height); |
| 460 | return ret; |
| 461 | } |
| 462 | |
| 463 | AVHWAccel ff_h264_dxva2_hwaccel = { |
| 464 | .name = "h264_dxva2", |
| 465 | .type = AVMEDIA_TYPE_VIDEO, |
| 466 | .id = AV_CODEC_ID_H264, |
| 467 | .pix_fmt = AV_PIX_FMT_DXVA2_VLD, |
| 468 | .start_frame = dxva2_h264_start_frame, |
| 469 | .decode_slice = dxva2_h264_decode_slice, |
| 470 | .end_frame = dxva2_h264_end_frame, |
| 471 | .frame_priv_data_size = sizeof(struct dxva2_picture_context), |
| 472 | }; |