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| 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.h" |
| 24 | +#include "avcodec.h" |
| 25 | + |
| 26 | +#include "mpegvideo.h" |
| 27 | +#include "h264.h" |
| 28 | +#include "h264data.h" |
| 29 | + |
| 30 | +struct dxva2_picture_context { |
| 31 | + DXVA_PicParams_H264 pp; |
| 32 | + DXVA_Qmatrix_H264 qm; |
| 33 | + unsigned slice_count; |
| 34 | + DXVA_Slice_H264_Short slice_short[MAX_SLICES]; |
| 35 | + DXVA_Slice_H264_Long slice_long[MAX_SLICES]; |
| 36 | + const uint8_t *bitstream; |
| 37 | + unsigned bitstream_size; |
| 38 | +}; |
| 39 | + |
| 40 | +static void *get_surface(const Picture *picture) |
| 41 | +{ |
| 42 | + return picture->data[3]; |
| 43 | +} |
| 44 | +static unsigned get_surface_index(const struct dxva_context *ctx, |
| 45 | + const Picture *picture) |
| 46 | +{ |
| 47 | + void *surface = get_surface(picture); |
| 48 | + unsigned i; |
| 49 | + |
| 50 | + for (i = 0; i < ctx->surface_count; i++) |
| 51 | + if (ctx->surface[i] == surface) |
| 52 | + return i; |
| 53 | + |
| 54 | + assert(0); |
| 55 | + return 0; |
| 56 | +} |
| 57 | + |
| 58 | +static void fill_picture_entry(DXVA_PicEntry_H264 *pic, |
| 59 | + unsigned index, unsigned flag) |
| 60 | +{ |
| 61 | + assert((index&0x7f) == index && (flag&0x01) == flag); |
| 62 | + pic->bPicEntry = index | (flag << 7); |
| 63 | +} |
| 64 | + |
| 65 | +static void fill_picture_parameters(struct dxva_context *ctx, const H264Context *h, |
| 66 | + DXVA_PicParams_H264 *pp) |
| 67 | +{ |
| 68 | + const MpegEncContext *s = &h->s; |
| 69 | + const Picture *current_picture = s->current_picture_ptr; |
| 70 | + int i; |
| 71 | + |
| 72 | + memset(pp, 0, sizeof(*pp)); |
| 73 | + /* Configure current picture */ |
| 74 | + fill_picture_entry(&pp->CurrPic, |
| 75 | + get_surface_index(ctx, current_picture), |
| 76 | + s->picture_structure == PICT_BOTTOM_FIELD); |
| 77 | + /* Configure the set of references */ |
| 78 | + pp->UsedForReferenceFlags = 0; |
| 79 | + pp->NonExistingFrameFlags = 0; |
| 80 | + for (i = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) { |
| 81 | + if (i < h->short_ref_count + h->long_ref_count) { |
| 82 | + const Picture *r; |
| 83 | + if (i < h->short_ref_count) { |
| 84 | + r = h->short_ref[i]; |
| 85 | + assert(!r->long_ref); |
| 86 | + } else { |
| 87 | + r = h->long_ref[i - h->short_ref_count]; |
| 88 | + assert(r->long_ref); |
| 89 | + } |
| 90 | + fill_picture_entry(&pp->RefFrameList[i], |
| 91 | + get_surface_index(ctx, r), |
| 92 | + r->long_ref != 0); |
| 93 | + |
| 94 | + if ((r->reference & PICT_TOP_FIELD) && r->field_poc[0] != INT_MAX) |
| 95 | + pp->FieldOrderCntList[i][0] = r->field_poc[0]; |
| 96 | + if ((r->reference & PICT_BOTTOM_FIELD) && r->field_poc[1] != INT_MAX) |
| 97 | + pp->FieldOrderCntList[i][1] = r->field_poc[1]; |
| 98 | + |
| 99 | + pp->FrameNumList[i] = r->long_ref ? r->pic_id : r->frame_num; |
| 100 | + if (r->reference & PICT_TOP_FIELD) |
| 101 | + pp->UsedForReferenceFlags |= 1 << (2*i + 0); |
| 102 | + if (r->reference & PICT_BOTTOM_FIELD) |
| 103 | + pp->UsedForReferenceFlags |= 1 << (2*i + 1); |
| 104 | + } else { |
| 105 | + pp->RefFrameList[i].bPicEntry = 0xff; |
| 106 | + pp->FieldOrderCntList[i][0] = 0; |
| 107 | + pp->FieldOrderCntList[i][1] = 0; |
| 108 | + pp->FrameNumList[i] = 0; |
| 109 | + } |
| 110 | + } |
| 111 | + |
| 112 | + pp->wFrameWidthInMbsMinus1 = s->mb_width - 1; |
| 113 | + pp->wFrameHeightInMbsMinus1 = s->mb_height - 1; |
| 114 | + pp->num_ref_frames = h->sps.ref_frame_count; |
| 115 | + |
| 116 | + pp->wBitFields = ((s->picture_structure != PICT_FRAME) << 0) | |
| 117 | + (h->sps.mb_aff << 1) | |
| 118 | + (h->sps.residual_color_transform_flag << 2) | |
| 119 | + /* sp_for_switch_flag (not implemented by FFmpeg) */ |
| 120 | + (0 << 3) | |
| 121 | + (h->sps.chroma_format_idc << 4) | |
| 122 | + ((h->nal_ref_idc != 0) << 6) | |
| 123 | + (h->pps.constrained_intra_pred << 7) | |
| 124 | + (h->pps.weighted_pred << 8) | |
| 125 | + (h->pps.weighted_bipred_idc << 9) | |
| 126 | + /* MbsConsecutiveFlag */ |
| 127 | + (1 << 11) | |
| 128 | + (h->sps.frame_mbs_only_flag << 12) | |
| 129 | + (h->pps.transform_8x8_mode << 13) | |
| 130 | + ((h->sps.level_idc >= 31) << 14) | |
| 131 | + /* IntraPicFlag (Modified if we detect a non |
| 132 | + * intra slice in decode_slice) */ |
| 133 | + (1 << 15); |
| 134 | + |
| 135 | + pp->bit_depth_luma_minus8 = h->sps.bit_depth_luma - 8; |
| 136 | + pp->bit_depth_chroma_minus8 = h->sps.bit_depth_chroma - 8; |
| 137 | + pp->Reserved16Bits = 3; /* FIXME is there a way to detect the right mode ? */ |
| 138 | + pp->StatusReportFeedbackNumber = 1 + ctx->report_id++; |
| 139 | + pp->CurrFieldOrderCnt[0] = 0; |
| 140 | + if ((s->picture_structure & PICT_TOP_FIELD) && |
| 141 | + current_picture->field_poc[0] != INT_MAX) |
| 142 | + pp->CurrFieldOrderCnt[0] = current_picture->field_poc[0]; |
| 143 | + pp->CurrFieldOrderCnt[1] = 0; |
| 144 | + if ((s->picture_structure & PICT_BOTTOM_FIELD) && |
| 145 | + current_picture->field_poc[1] != INT_MAX) |
| 146 | + pp->CurrFieldOrderCnt[1] = current_picture->field_poc[1]; |
| 147 | + pp->pic_init_qs_minus26 = h->pps.init_qs - 26; |
| 148 | + pp->chroma_qp_index_offset = h->pps.chroma_qp_index_offset[0]; |
| 149 | + pp->second_chroma_qp_index_offset = h->pps.chroma_qp_index_offset[1]; |
| 150 | + pp->ContinuationFlag = 1; |
| 151 | + pp->pic_init_qp_minus26 = h->pps.init_qp - 26; |
| 152 | + pp->num_ref_idx_l0_active_minus1 = h->pps.ref_count[0] - 1; |
| 153 | + pp->num_ref_idx_l1_active_minus1 = h->pps.ref_count[1] - 1; |
| 154 | + pp->Reserved8BitsA = 0; |
| 155 | + pp->frame_num = h->frame_num; |
| 156 | + pp->log2_max_frame_num_minus4 = h->sps.log2_max_frame_num - 4; |
| 157 | + pp->pic_order_cnt_type = h->sps.poc_type; |
| 158 | + if (h->sps.poc_type == 0) |
| 159 | + pp->log2_max_pic_order_cnt_lsb_minus4 = h->sps.log2_max_poc_lsb - 4; |
| 160 | + else if (h->sps.poc_type == 1) |
| 161 | + pp->delta_pic_order_always_zero_flag = h->sps.delta_pic_order_always_zero_flag; |
| 162 | + pp->direct_8x8_inference_flag = h->sps.direct_8x8_inference_flag; |
| 163 | + pp->entropy_coding_mode_flag = h->pps.cabac; |
| 164 | + pp->pic_order_present_flag = h->pps.pic_order_present; |
| 165 | + pp->num_slice_groups_minus1 = h->pps.slice_group_count - 1; |
| 166 | + pp->slice_group_map_type = h->pps.mb_slice_group_map_type; |
| 167 | + pp->deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present; |
| 168 | + pp->redundant_pic_cnt_present_flag= h->pps.redundant_pic_cnt_present; |
| 169 | + pp->Reserved8BitsB = 0; |
| 170 | + pp->slice_group_change_rate_minus1= 0; /* XXX not implemented by FFmpeg */ |
| 171 | + //pp->SliceGroupMap[810]; /* XXX not implemented by FFmpeg */ |
| 172 | +} |
| 173 | + |
| 174 | +static void fill_scaling_lists(const H264Context *h, DXVA_Qmatrix_H264 *qm) |
| 175 | +{ |
| 176 | + unsigned i, j; |
| 177 | + memset(qm, 0, sizeof(*qm)); |
| 178 | + for (i = 0; i < 6; i++) |
| 179 | + for (j = 0; j < 16; j++) |
| 180 | + qm->bScalingLists4x4[i][j] = h->pps.scaling_matrix4[i][zigzag_scan[j]]; |
| 181 | + |
| 182 | + for (i = 0; i < 2; i++) |
| 183 | + for (j = 0; j < 64; j++) |
| 184 | + qm->bScalingLists8x8[i][j] = h->pps.scaling_matrix8[i][ff_zigzag_direct[j]]; |
| 185 | +} |
| 186 | + |
| 187 | +static int is_slice_short(struct dxva_context *ctx) |
| 188 | +{ |
| 189 | + assert(ctx->cfg->ConfigBitstreamRaw == 1 || |
| 190 | + ctx->cfg->ConfigBitstreamRaw == 2); |
| 191 | + return ctx->cfg->ConfigBitstreamRaw == 2; |
| 192 | +} |
| 193 | + |
| 194 | +static void fill_slice_short(DXVA_Slice_H264_Short *slice, |
| 195 | + unsigned position, unsigned size) |
| 196 | +{ |
| 197 | + memset(slice, 0, sizeof(*slice)); |
| 198 | + slice->BSNALunitDataLocation = position; |
| 199 | + slice->SliceBytesInBuffer = size; |
| 200 | + slice->wBadSliceChopping = 0; |
| 201 | +} |
| 202 | + |
| 203 | +static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice, |
| 204 | + unsigned position, unsigned size) |
| 205 | +{ |
| 206 | + H264Context *h = avctx->priv_data; /* FIXME Can't use const because of get_bits_count */ |
| 207 | + struct dxva_context *ctx = avctx->hwaccel_context; |
| 208 | + MpegEncContext *s = &h->s; |
| 209 | + unsigned list; |
| 210 | + |
| 211 | + memset(slice, 0, sizeof(*slice)); |
| 212 | + slice->BSNALunitDataLocation = position; |
| 213 | + slice->SliceBytesInBuffer = size; |
| 214 | + slice->wBadSliceChopping = 0; |
| 215 | + |
| 216 | + slice->first_mb_in_slice = (s->mb_y >> FIELD_OR_MBAFF_PICTURE) * s->mb_width + s->mb_x; |
| 217 | + slice->NumMbsForSlice = 0; /* XXX it is set once we have all slices */ |
| 218 | + slice->BitOffsetToSliceData = get_bits_count(&s->gb) + 8; |
| 219 | + slice->slice_type = ff_h264_get_slice_type(h); |
| 220 | + if (h->slice_type_fixed) |
| 221 | + slice->slice_type += 5; |
| 222 | + slice->luma_log2_weight_denom = h->luma_log2_weight_denom; |
| 223 | + slice->chroma_log2_weight_denom = h->chroma_log2_weight_denom; |
| 224 | + if (h->list_count > 0) |
| 225 | + slice->num_ref_idx_l0_active_minus1 = h->ref_count[0] - 1; |
| 226 | + if (h->list_count > 1) |
| 227 | + slice->num_ref_idx_l1_active_minus1 = h->ref_count[1] - 1; |
| 228 | + slice->slice_alpha_c0_offset_div2 = h->slice_alpha_c0_offset / 2; |
| 229 | + slice->slice_beta_offset_div2 = h->slice_beta_offset / 2; |
| 230 | + slice->Reserved8Bits = 0; |
| 231 | + |
| 232 | + for (list = 0; list < 2; list++) { |
| 233 | + unsigned i; |
| 234 | + for (i = 0; i < FF_ARRAY_ELEMS(slice->RefPicList[list]); i++) { |
| 235 | + if (list < h->list_count && i < h->ref_count[list]) { |
| 236 | + const Picture *r = &h->ref_list[list][i]; |
| 237 | + unsigned plane; |
| 238 | + fill_picture_entry(&slice->RefPicList[list][i], |
| 239 | + get_surface_index(ctx, r), |
| 240 | + r->reference == PICT_BOTTOM_FIELD); |
| 241 | + for (plane = 0; plane < 3; plane++) { |
| 242 | + int w, o; |
| 243 | + if (plane == 0 && h->luma_weight_flag[list]) { |
| 244 | + w = h->luma_weight[list][i]; |
| 245 | + o = h->luma_offset[list][i]; |
| 246 | + } else if (plane >= 1 && h->chroma_weight_flag[list]) { |
| 247 | + w = h->chroma_weight[list][i][plane-1]; |
| 248 | + o = h->chroma_offset[list][i][plane-1]; |
| 249 | + } else { |
| 250 | + w = 1 << (plane == 0 ? h->luma_log2_weight_denom : |
| 251 | + h->chroma_log2_weight_denom); |
| 252 | + o = 0; |
| 253 | + } |
| 254 | + slice->Weights[list][i][plane][0] = w; |
| 255 | + slice->Weights[list][i][plane][1] = o; |
| 256 | + } |
| 257 | + } else { |
| 258 | + unsigned plane; |
| 259 | + slice->RefPicList[list][i].bPicEntry = 0xff; |
| 260 | + for (plane = 0; plane < 3; plane++) { |
| 261 | + slice->Weights[list][i][plane][0] = 0; |
| 262 | + slice->Weights[list][i][plane][1] = 0; |
| 263 | + } |
| 264 | + } |
| 265 | + } |
| 266 | + } |
| 267 | + slice->slice_qs_delta = 0; /* XXX not implemented by FFmpeg */ |
| 268 | + slice->slice_qp_delta = s->qscale - h->pps.init_qp; |
| 269 | + slice->redundant_pic_cnt = h->redundant_pic_count; |
| 270 | + if (h->slice_type == FF_B_TYPE) |
| 271 | + slice->direct_spatial_mv_pred_flag = h->direct_spatial_mv_pred; |
| 272 | + slice->cabac_init_idc = h->pps.cabac ? h->cabac_init_idc : 0; |
| 273 | + if (h->deblocking_filter < 2) |
| 274 | + slice->disable_deblocking_filter_idc = 1 - h->deblocking_filter; |
| 275 | + else |
| 276 | + slice->disable_deblocking_filter_idc = h->deblocking_filter; |
| 277 | + slice->slice_id = h->current_slice - 1; |
| 278 | +} |
| 279 | + |
| 280 | +static int commit_buffer(AVCodecContext *avctx, |
| 281 | + struct dxva_context *ctx, |
| 282 | + DXVA2_DecodeBufferDesc *dsc, |
| 283 | + unsigned type, const void *data, unsigned size, |
| 284 | + unsigned mb_count) |
| 285 | +{ |
| 286 | + void *dxva_data; |
| 287 | + unsigned dxva_size; |
| 288 | + int result; |
| 289 | + |
| 290 | + if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, type, |
| 291 | + &dxva_data, &dxva_size))) { |
| 292 | + av_log(avctx, AV_LOG_ERROR, "Failed to get a buffer for %d\n", type); |
| 293 | + return -1; |
| 294 | + } |
| 295 | + if (size <= dxva_size) { |
| 296 | + memcpy(dxva_data, data, size); |
| 297 | + |
| 298 | + memset(dsc, 0, sizeof(*dsc)); |
| 299 | + dsc->CompressedBufferType = type; |
| 300 | + dsc->DataSize = size; |
| 301 | + dsc->NumMBsInBuffer = mb_count; |
| 302 | + |
| 303 | + result = 0; |
| 304 | + } else { |
| 305 | + av_log(avctx, AV_LOG_ERROR, "Buffer for type %d was too small\n", type); |
| 306 | + result = -1; |
| 307 | + } |
| 308 | + if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, type))) { |
| 309 | + av_log(avctx, AV_LOG_ERROR, "Failed to release buffer type %d\n", type); |
| 310 | + result = -1; |
| 311 | + } |
| 312 | + return result; |
| 313 | +} |
| 314 | + |
| 315 | +static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx, |
| 316 | + struct dxva_context *ctx, |
| 317 | + struct dxva2_picture_context *ctx_pic, |
| 318 | + DXVA2_DecodeBufferDesc *bs, |
| 319 | + DXVA2_DecodeBufferDesc *sc, |
| 320 | + unsigned mb_count) |
| 321 | +{ |
| 322 | + DXVA_Slice_H264_Short *slice = NULL; |
| 323 | + uint8_t *dxva_data, *current, *end; |
| 324 | + unsigned dxva_size; |
| 325 | + void *slice_data; |
| 326 | + unsigned slice_size; |
| 327 | + unsigned padding; |
| 328 | + unsigned i; |
| 329 | + |
| 330 | + /* Create an annex B bitstream buffer with only slice NAL and finalize slice */ |
| 331 | + if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, |
| 332 | + DXVA2_BitStreamDateBufferType, |
| 333 | + &dxva_data, &dxva_size))) |
| 334 | + return -1; |
| 335 | + current = dxva_data; |
| 336 | + end = dxva_data + dxva_size; |
| 337 | + |
| 338 | + for (i = 0; i < ctx_pic->slice_count; i++) { |
| 339 | + static const uint8_t start_code[] = { 0, 0, 1 }; |
| 340 | + static const unsigned start_code_size = sizeof(start_code); |
| 341 | + unsigned position, size; |
| 342 | + |
| 343 | + assert(offsetof(DXVA_Slice_H264_Short, BSNALunitDataLocation) == |
| 344 | + offsetof(DXVA_Slice_H264_Long, BSNALunitDataLocation)); |
| 345 | + assert(offsetof(DXVA_Slice_H264_Short, SliceBytesInBuffer) == |
| 346 | + offsetof(DXVA_Slice_H264_Long, SliceBytesInBuffer)); |
| 347 | + |
| 348 | + if (is_slice_short(ctx)) |
| 349 | + slice = &ctx_pic->slice_short[i]; |
| 350 | + else |
| 351 | + slice = (DXVA_Slice_H264_Short*)&ctx_pic->slice_long[i]; |
| 352 | + |
| 353 | + position = slice->BSNALunitDataLocation; |
| 354 | + size = slice->SliceBytesInBuffer; |
| 355 | + if (start_code_size + size > end - current) { |
| 356 | + av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream"); |
| 357 | + break; |
| 358 | + } |
| 359 | + |
| 360 | + slice->BSNALunitDataLocation = current - dxva_data; |
| 361 | + slice->SliceBytesInBuffer = start_code_size + size; |
| 362 | + |
| 363 | + if (!is_slice_short(ctx)) { |
| 364 | + DXVA_Slice_H264_Long *slice_long = (DXVA_Slice_H264_Long*)slice; |
| 365 | + if (i < ctx_pic->slice_count - 1) |
| 366 | + slice_long->NumMbsForSlice = |
| 367 | + slice_long[1].first_mb_in_slice - slice_long[0].first_mb_in_slice; |
| 368 | + else |
| 369 | + slice_long->NumMbsForSlice = mb_count - slice_long->first_mb_in_slice; |
| 370 | + } |
| 371 | + |
| 372 | + memcpy(current, start_code, start_code_size); |
| 373 | + current += start_code_size; |
| 374 | + |
| 375 | + memcpy(current, &ctx_pic->bitstream[position], size); |
| 376 | + current += size; |
| 377 | + } |
| 378 | + padding = FFMIN(128 - ((current - dxva_data) & 127), end - current); |
| 379 | + if (slice && padding > 0) { |
| 380 | + memset(current, 0, padding); |
| 381 | + current += padding; |
| 382 | + |
| 383 | + slice->SliceBytesInBuffer += padding; |
| 384 | + } |
| 385 | + if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, |
| 386 | + DXVA2_BitStreamDateBufferType))) |
| 387 | + return -1; |
| 388 | + if (i < ctx_pic->slice_count) |
| 389 | + return -1; |
| 390 | + |
| 391 | + memset(bs, 0, sizeof(*bs)); |
| 392 | + bs->CompressedBufferType = DXVA2_BitStreamDateBufferType; |
| 393 | + bs->DataSize = current - dxva_data; |
| 394 | + bs->NumMBsInBuffer = mb_count; |
| 395 | + |
| 396 | + if (is_slice_short(ctx)) { |
| 397 | + slice_data = ctx_pic->slice_short; |
| 398 | + slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short); |
| 399 | + } else { |
| 400 | + slice_data = ctx_pic->slice_long; |
| 401 | + slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_long); |
| 402 | + } |
| 403 | + assert((bs->DataSize & 127) == 0); |
| 404 | + return commit_buffer(avctx, ctx, sc, |
| 405 | + DXVA2_SliceControlBufferType, |
| 406 | + slice_data, slice_size, mb_count); |
| 407 | +} |
| 408 | + |
| 409 | + |
| 410 | +static int start_frame(AVCodecContext *avctx, |
| 411 | + av_unused const uint8_t *buffer, |
| 412 | + av_unused uint32_t size) |
| 413 | +{ |
| 414 | + const H264Context *h = avctx->priv_data; |
| 415 | + struct dxva_context *ctx = avctx->hwaccel_context; |
| 416 | + struct dxva2_picture_context *ctx_pic = h->s.current_picture_ptr->hwaccel_picture_private; |
| 417 | + |
| 418 | + if (!ctx->decoder || !ctx->cfg || ctx->surface_count <= 0) |
| 419 | + return -1; |
| 420 | + assert(ctx_pic); |
| 421 | + |
| 422 | + /* Fill up DXVA_PicParams_H264 */ |
| 423 | + fill_picture_parameters(ctx, h, &ctx_pic->pp); |
| 424 | + |
| 425 | + /* Fill up DXVA_Qmatrix_H264 */ |
| 426 | + fill_scaling_lists(h, &ctx_pic->qm); |
| 427 | + |
| 428 | + ctx_pic->slice_count = 0; |
| 429 | + ctx_pic->bitstream_size = 0; |
| 430 | + ctx_pic->bitstream = NULL; |
| 431 | + return 0; |
| 432 | +} |
| 433 | + |
| 434 | +static int decode_slice(AVCodecContext *avctx, |
| 435 | + const uint8_t *buffer, uint32_t size) |
| 436 | +{ |
| 437 | + H264Context *h = avctx->priv_data; /* FIXME Can't use const because of get_bits_count */ |
| 438 | + struct dxva_context *ctx = avctx->hwaccel_context; |
| 439 | + const Picture *current_picture = h->s.current_picture_ptr; |
| 440 | + struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private; |
| 441 | + unsigned position; |
| 442 | + |
| 443 | + if (ctx_pic->slice_count >= MAX_SLICES) |
| 444 | + return -1; |
| 445 | + |
| 446 | + if (!ctx_pic->bitstream) |
| 447 | + ctx_pic->bitstream = buffer; |
| 448 | + ctx_pic->bitstream_size += size; |
| 449 | + |
| 450 | + position = buffer - ctx_pic->bitstream; |
| 451 | + if (is_slice_short(ctx)) |
| 452 | + fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count], |
| 453 | + position, size); |
| 454 | + else |
| 455 | + fill_slice_long(avctx, &ctx_pic->slice_long[ctx_pic->slice_count], |
| 456 | + position, size); |
| 457 | + ctx_pic->slice_count++; |
| 458 | + |
| 459 | + if (h->slice_type != FF_I_TYPE && h->slice_type != FF_SI_TYPE) |
| 460 | + ctx_pic->pp.wBitFields &= ~(1 << 15); /* Set IntraPicFlag to 0 */ |
| 461 | + return 0; |
| 462 | +} |
| 463 | + |
| 464 | +static int end_frame(AVCodecContext *avctx) |
| 465 | +{ |
| 466 | + H264Context *h = avctx->priv_data; |
| 467 | + MpegEncContext *s = &h->s; |
| 468 | + const unsigned mb_count = s->mb_width * s->mb_height; |
| 469 | + struct dxva_context *ctx = avctx->hwaccel_context; |
| 470 | + const Picture *current_picture = h->s.current_picture_ptr; |
| 471 | + struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private; |
| 472 | + unsigned buffer_count = 0; |
| 473 | + DXVA2_DecodeBufferDesc buffer[4]; |
| 474 | + DXVA2_DecodeExecuteParams exec; |
| 475 | + int result; |
| 476 | + |
| 477 | + if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0) |
| 478 | + return -1; |
| 479 | + |
| 480 | + if (FAILED(IDirectXVideoDecoder_BeginFrame(ctx->decoder, |
| 481 | + get_surface(current_picture), |
| 482 | + NULL))) { |
| 483 | + av_log(avctx, AV_LOG_ERROR, "Failed to begin frame\n"); |
| 484 | + return -1; |
| 485 | + } |
| 486 | + |
| 487 | + result = commit_buffer(avctx, ctx, &buffer[buffer_count], |
| 488 | + DXVA2_PictureParametersBufferType, |
| 489 | + &ctx_pic->pp, sizeof(ctx_pic->pp), 0); |
| 490 | + if (result) { |
| 491 | + av_log(avctx, AV_LOG_ERROR, |
| 492 | + "Failed to add picture parameter buffer\n"); |
| 493 | + goto end; |
| 494 | + } |
| 495 | + buffer_count++; |
| 496 | + |
| 497 | + result = commit_buffer(avctx, ctx, &buffer[buffer_count], |
| 498 | + DXVA2_InverseQuantizationMatrixBufferType, |
| 499 | + &ctx_pic->qm, sizeof(ctx_pic->qm), 0); |
| 500 | + if (result) { |
| 501 | + av_log(avctx, AV_LOG_ERROR, |
| 502 | + "Failed to add inverse quantization matrix buffer\n"); |
| 503 | + goto end; |
| 504 | + } |
| 505 | + buffer_count++; |
| 506 | + |
| 507 | + result = commit_bitstream_and_slice_buffer(avctx, ctx, ctx_pic, |
| 508 | + &buffer[buffer_count + 0], |
| 509 | + &buffer[buffer_count + 1], |
| 510 | + mb_count); |
| 511 | + if (result) { |
| 512 | + av_log(avctx, AV_LOG_ERROR, |
| 513 | + "Failed to add bitstream or slice control buffer\n"); |
| 514 | + goto end; |
| 515 | + } |
| 516 | + buffer_count += 2; |
| 517 | + |
| 518 | + /* TODO Film Grain when possible */ |
| 519 | + |
| 520 | + assert(buffer_count == 4); |
| 521 | + |
| 522 | + memset(&exec, 0, sizeof(exec)); |
| 523 | + exec.NumCompBuffers = buffer_count; |
| 524 | + exec.pCompressedBuffers = buffer; |
| 525 | + exec.pExtensionData = NULL; |
| 526 | + if (FAILED(IDirectXVideoDecoder_Execute(ctx->decoder, &exec))) { |
| 527 | + av_log(avctx, AV_LOG_ERROR, "Failed to execute\n"); |
| 528 | + result = -1; |
| 529 | + } |
| 530 | + |
| 531 | +end: |
| 532 | + if (FAILED(IDirectXVideoDecoder_EndFrame(ctx->decoder, NULL))) { |
| 533 | + av_log(avctx, AV_LOG_ERROR, "Failed to end frame\n"); |
| 534 | + result = -1; |
| 535 | + } |
| 536 | + |
| 537 | + if (!result) |
| 538 | + ff_draw_horiz_band(s, 0, s->avctx->height); |
| 539 | + return result; |
| 540 | +} |
| 541 | + |
| 542 | +AVHWAccel h264_dxva2_hwaccel = { |
| 543 | + .name = "h264_dxva2", |
| 544 | + .type = CODEC_TYPE_VIDEO, |
| 545 | + .id = CODEC_ID_H264, |
| 546 | + .pix_fmt = PIX_FMT_DXVA2_VLD, |
| 547 | + .capabilities = 0, |
| 548 | + .start_frame = start_frame, |
| 549 | + .decode_slice = decode_slice, |
| 550 | + .end_frame = end_frame, |
| 551 | + .priv_data_size = sizeof(struct dxva2_picture_context), |
| 552 | +}; |
| 553 | + |