| 1 | /* |
| 2 | * DXVA2 WMV3/VC-1 HW acceleration. |
| 3 | * |
| 4 | * copyright (c) 2010 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 "mpegutils.h" |
| 25 | #include "vc1.h" |
| 26 | #include "vc1data.h" |
| 27 | |
| 28 | struct dxva2_picture_context { |
| 29 | DXVA_PictureParameters pp; |
| 30 | DXVA_SliceInfo si; |
| 31 | |
| 32 | const uint8_t *bitstream; |
| 33 | unsigned bitstream_size; |
| 34 | }; |
| 35 | |
| 36 | static void fill_picture_parameters(AVCodecContext *avctx, |
| 37 | struct dxva_context *ctx, const VC1Context *v, |
| 38 | DXVA_PictureParameters *pp) |
| 39 | { |
| 40 | const MpegEncContext *s = &v->s; |
| 41 | const Picture *current_picture = s->current_picture_ptr; |
| 42 | int intcomp = 0; |
| 43 | |
| 44 | // determine if intensity compensation is needed |
| 45 | if (s->pict_type == AV_PICTURE_TYPE_P) { |
| 46 | if ((v->fcm == ILACE_FRAME && v->intcomp) || (v->fcm != ILACE_FRAME && v->mv_mode == MV_PMODE_INTENSITY_COMP)) { |
| 47 | if (v->lumscale != 32 || v->lumshift != 0 || (s->picture_structure != PICT_FRAME && (v->lumscale2 != 32 || v->lumshift2 != 0))) |
| 48 | intcomp = 1; |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | memset(pp, 0, sizeof(*pp)); |
| 53 | pp->wDecodedPictureIndex = |
| 54 | pp->wDeblockedPictureIndex = ff_dxva2_get_surface_index(ctx, current_picture->f); |
| 55 | if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type) |
| 56 | pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, s->last_picture.f); |
| 57 | else |
| 58 | pp->wForwardRefPictureIndex = 0xffff; |
| 59 | if (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type) |
| 60 | pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, s->next_picture.f); |
| 61 | else |
| 62 | pp->wBackwardRefPictureIndex = 0xffff; |
| 63 | if (v->profile == PROFILE_ADVANCED) { |
| 64 | /* It is the cropped width/height -1 of the frame */ |
| 65 | pp->wPicWidthInMBminus1 = avctx->width - 1; |
| 66 | pp->wPicHeightInMBminus1= avctx->height - 1; |
| 67 | } else { |
| 68 | /* It is the coded width/height in macroblock -1 of the frame */ |
| 69 | pp->wPicWidthInMBminus1 = s->mb_width - 1; |
| 70 | pp->wPicHeightInMBminus1= s->mb_height - 1; |
| 71 | } |
| 72 | pp->bMacroblockWidthMinus1 = 15; |
| 73 | pp->bMacroblockHeightMinus1 = 15; |
| 74 | pp->bBlockWidthMinus1 = 7; |
| 75 | pp->bBlockHeightMinus1 = 7; |
| 76 | pp->bBPPminus1 = 7; |
| 77 | if (s->picture_structure & PICT_TOP_FIELD) |
| 78 | pp->bPicStructure |= 0x01; |
| 79 | if (s->picture_structure & PICT_BOTTOM_FIELD) |
| 80 | pp->bPicStructure |= 0x02; |
| 81 | pp->bSecondField = v->interlace && v->fcm == ILACE_FIELD && v->second_field; |
| 82 | pp->bPicIntra = s->pict_type == AV_PICTURE_TYPE_I || v->bi_type; |
| 83 | pp->bPicBackwardPrediction = s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type; |
| 84 | pp->bBidirectionalAveragingMode = (1 << 7) | |
| 85 | ((ctx->cfg->ConfigIntraResidUnsigned != 0) << 6) | |
| 86 | ((ctx->cfg->ConfigResidDiffAccelerator != 0) << 5) | |
| 87 | (intcomp << 4) | |
| 88 | ((v->profile == PROFILE_ADVANCED) << 3); |
| 89 | pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) | |
| 90 | (1 << 2) | |
| 91 | (0 << 1) | |
| 92 | (!s->quarter_sample ); |
| 93 | pp->bChromaFormat = v->chromaformat; |
| 94 | ctx->report_id++; |
| 95 | if (ctx->report_id >= (1 << 16)) |
| 96 | ctx->report_id = 1; |
| 97 | pp->bPicScanFixed = ctx->report_id >> 8; |
| 98 | pp->bPicScanMethod = ctx->report_id & 0xff; |
| 99 | pp->bPicReadbackRequests = 0; |
| 100 | pp->bRcontrol = v->rnd; |
| 101 | pp->bPicSpatialResid8 = (v->panscanflag << 7) | |
| 102 | (v->refdist_flag << 6) | |
| 103 | (s->loop_filter << 5) | |
| 104 | (v->fastuvmc << 4) | |
| 105 | (v->extended_mv << 3) | |
| 106 | (v->dquant << 1) | |
| 107 | (v->vstransform ); |
| 108 | pp->bPicOverflowBlocks = (v->quantizer_mode << 6) | |
| 109 | (v->multires << 5) | |
| 110 | (v->resync_marker << 4) | |
| 111 | (v->rangered << 3) | |
| 112 | (s->max_b_frames ); |
| 113 | pp->bPicExtrapolation = (!v->interlace || v->fcm == PROGRESSIVE) ? 1 : 2; |
| 114 | pp->bPicDeblocked = ((!pp->bPicBackwardPrediction && v->overlap) << 6) | |
| 115 | ((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) | |
| 116 | (s->loop_filter << 1); |
| 117 | pp->bPicDeblockConfined = (v->postprocflag << 7) | |
| 118 | (v->broadcast << 6) | |
| 119 | (v->interlace << 5) | |
| 120 | (v->tfcntrflag << 4) | |
| 121 | (v->finterpflag << 3) | |
| 122 | ((s->pict_type != AV_PICTURE_TYPE_B) << 2) | |
| 123 | (v->psf << 1) | |
| 124 | (v->extended_dmv ); |
| 125 | if (s->pict_type != AV_PICTURE_TYPE_I) |
| 126 | pp->bPic4MVallowed = v->mv_mode == MV_PMODE_MIXED_MV || |
| 127 | (v->mv_mode == MV_PMODE_INTENSITY_COMP && |
| 128 | v->mv_mode2 == MV_PMODE_MIXED_MV); |
| 129 | if (v->profile == PROFILE_ADVANCED) |
| 130 | pp->bPicOBMC = (v->range_mapy_flag << 7) | |
| 131 | (v->range_mapy << 4) | |
| 132 | (v->range_mapuv_flag << 3) | |
| 133 | (v->range_mapuv ); |
| 134 | pp->bPicBinPB = 0; |
| 135 | pp->bMV_RPS = (v->fcm == ILACE_FIELD && pp->bPicBackwardPrediction) ? v->refdist + 9 : 0; |
| 136 | pp->bReservedBits = v->pq; |
| 137 | if (s->picture_structure == PICT_FRAME) { |
| 138 | if (intcomp) { |
| 139 | pp->wBitstreamFcodes = v->lumscale; |
| 140 | pp->wBitstreamPCEelements = v->lumshift; |
| 141 | } else { |
| 142 | pp->wBitstreamFcodes = 32; |
| 143 | pp->wBitstreamPCEelements = 0; |
| 144 | } |
| 145 | } else { |
| 146 | /* Syntax: (top_field_param << 8) | bottom_field_param */ |
| 147 | if (intcomp) { |
| 148 | pp->wBitstreamFcodes = (v->lumscale << 8) | v->lumscale2; |
| 149 | pp->wBitstreamPCEelements = (v->lumshift << 8) | v->lumshift2; |
| 150 | } else { |
| 151 | pp->wBitstreamFcodes = (32 << 8) | 32; |
| 152 | pp->wBitstreamPCEelements = 0; |
| 153 | } |
| 154 | } |
| 155 | pp->bBitstreamConcealmentNeed = 0; |
| 156 | pp->bBitstreamConcealmentMethod = 0; |
| 157 | } |
| 158 | |
| 159 | static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice, |
| 160 | unsigned position, unsigned size) |
| 161 | { |
| 162 | const VC1Context *v = avctx->priv_data; |
| 163 | const MpegEncContext *s = &v->s; |
| 164 | |
| 165 | memset(slice, 0, sizeof(*slice)); |
| 166 | slice->wHorizontalPosition = 0; |
| 167 | slice->wVerticalPosition = s->mb_y; |
| 168 | slice->dwSliceBitsInBuffer = 8 * size; |
| 169 | slice->dwSliceDataLocation = position; |
| 170 | slice->bStartCodeBitOffset = 0; |
| 171 | slice->bReservedBits = (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type) ? v->bfraction_lut_index + 9 : 0; |
| 172 | slice->wMBbitOffset = v->p_frame_skipped ? 0xffff : get_bits_count(&s->gb) + (avctx->codec_id == AV_CODEC_ID_VC1 ? 32 : 0); |
| 173 | slice->wNumberMBsInSlice = s->mb_width * s->mb_height; /* XXX We assume 1 slice */ |
| 174 | slice->wQuantizerScaleCode = v->pq; |
| 175 | slice->wBadSliceChopping = 0; |
| 176 | } |
| 177 | |
| 178 | static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx, |
| 179 | DXVA2_DecodeBufferDesc *bs, |
| 180 | DXVA2_DecodeBufferDesc *sc) |
| 181 | { |
| 182 | const VC1Context *v = avctx->priv_data; |
| 183 | struct dxva_context *ctx = avctx->hwaccel_context; |
| 184 | const MpegEncContext *s = &v->s; |
| 185 | struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private; |
| 186 | |
| 187 | DXVA_SliceInfo *slice = &ctx_pic->si; |
| 188 | |
| 189 | static const uint8_t start_code[] = { 0, 0, 1, 0x0d }; |
| 190 | const unsigned start_code_size = avctx->codec_id == AV_CODEC_ID_VC1 ? sizeof(start_code) : 0; |
| 191 | const unsigned slice_size = slice->dwSliceBitsInBuffer / 8; |
| 192 | const unsigned padding = 128 - ((start_code_size + slice_size) & 127); |
| 193 | const unsigned data_size = start_code_size + slice_size + padding; |
| 194 | |
| 195 | void *dxva_data_ptr; |
| 196 | uint8_t *dxva_data; |
| 197 | unsigned dxva_size; |
| 198 | int result; |
| 199 | |
| 200 | if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, |
| 201 | DXVA2_BitStreamDateBufferType, |
| 202 | &dxva_data_ptr, &dxva_size))) |
| 203 | return -1; |
| 204 | |
| 205 | dxva_data = dxva_data_ptr; |
| 206 | result = data_size <= dxva_size ? 0 : -1; |
| 207 | if (!result) { |
| 208 | if (start_code_size > 0) { |
| 209 | memcpy(dxva_data, start_code, start_code_size); |
| 210 | if (v->second_field) |
| 211 | dxva_data[3] = 0x0c; |
| 212 | } |
| 213 | memcpy(dxva_data + start_code_size, |
| 214 | ctx_pic->bitstream + slice->dwSliceDataLocation, slice_size); |
| 215 | if (padding > 0) |
| 216 | memset(dxva_data + start_code_size + slice_size, 0, padding); |
| 217 | slice->dwSliceBitsInBuffer = 8 * data_size; |
| 218 | } |
| 219 | if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, |
| 220 | DXVA2_BitStreamDateBufferType))) |
| 221 | return -1; |
| 222 | if (result) |
| 223 | return result; |
| 224 | |
| 225 | memset(bs, 0, sizeof(*bs)); |
| 226 | bs->CompressedBufferType = DXVA2_BitStreamDateBufferType; |
| 227 | bs->DataSize = data_size; |
| 228 | bs->NumMBsInBuffer = s->mb_width * s->mb_height; |
| 229 | assert((bs->DataSize & 127) == 0); |
| 230 | |
| 231 | return ff_dxva2_commit_buffer(avctx, ctx, sc, |
| 232 | DXVA2_SliceControlBufferType, |
| 233 | slice, sizeof(*slice), bs->NumMBsInBuffer); |
| 234 | } |
| 235 | |
| 236 | static int dxva2_vc1_start_frame(AVCodecContext *avctx, |
| 237 | av_unused const uint8_t *buffer, |
| 238 | av_unused uint32_t size) |
| 239 | { |
| 240 | const VC1Context *v = avctx->priv_data; |
| 241 | struct dxva_context *ctx = avctx->hwaccel_context; |
| 242 | struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private; |
| 243 | |
| 244 | if (!ctx->decoder || !ctx->cfg || ctx->surface_count <= 0) |
| 245 | return -1; |
| 246 | assert(ctx_pic); |
| 247 | |
| 248 | fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp); |
| 249 | |
| 250 | ctx_pic->bitstream_size = 0; |
| 251 | ctx_pic->bitstream = NULL; |
| 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | static int dxva2_vc1_decode_slice(AVCodecContext *avctx, |
| 256 | const uint8_t *buffer, |
| 257 | uint32_t size) |
| 258 | { |
| 259 | const VC1Context *v = avctx->priv_data; |
| 260 | const Picture *current_picture = v->s.current_picture_ptr; |
| 261 | struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private; |
| 262 | |
| 263 | if (ctx_pic->bitstream_size > 0) |
| 264 | return -1; |
| 265 | |
| 266 | if (avctx->codec_id == AV_CODEC_ID_VC1 && |
| 267 | size >= 4 && IS_MARKER(AV_RB32(buffer))) { |
| 268 | buffer += 4; |
| 269 | size -= 4; |
| 270 | } |
| 271 | |
| 272 | ctx_pic->bitstream_size = size; |
| 273 | ctx_pic->bitstream = buffer; |
| 274 | |
| 275 | fill_slice(avctx, &ctx_pic->si, 0, size); |
| 276 | return 0; |
| 277 | } |
| 278 | |
| 279 | static int dxva2_vc1_end_frame(AVCodecContext *avctx) |
| 280 | { |
| 281 | VC1Context *v = avctx->priv_data; |
| 282 | struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private; |
| 283 | int ret; |
| 284 | |
| 285 | if (ctx_pic->bitstream_size <= 0) |
| 286 | return -1; |
| 287 | |
| 288 | ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr->f, |
| 289 | &ctx_pic->pp, sizeof(ctx_pic->pp), |
| 290 | NULL, 0, |
| 291 | commit_bitstream_and_slice_buffer); |
| 292 | if (!ret) |
| 293 | ff_mpeg_draw_horiz_band(&v->s, 0, avctx->height); |
| 294 | return ret; |
| 295 | } |
| 296 | |
| 297 | #if CONFIG_WMV3_DXVA2_HWACCEL |
| 298 | AVHWAccel ff_wmv3_dxva2_hwaccel = { |
| 299 | .name = "wmv3_dxva2", |
| 300 | .type = AVMEDIA_TYPE_VIDEO, |
| 301 | .id = AV_CODEC_ID_WMV3, |
| 302 | .pix_fmt = AV_PIX_FMT_DXVA2_VLD, |
| 303 | .start_frame = dxva2_vc1_start_frame, |
| 304 | .decode_slice = dxva2_vc1_decode_slice, |
| 305 | .end_frame = dxva2_vc1_end_frame, |
| 306 | .frame_priv_data_size = sizeof(struct dxva2_picture_context), |
| 307 | }; |
| 308 | #endif |
| 309 | |
| 310 | AVHWAccel ff_vc1_dxva2_hwaccel = { |
| 311 | .name = "vc1_dxva2", |
| 312 | .type = AVMEDIA_TYPE_VIDEO, |
| 313 | .id = AV_CODEC_ID_VC1, |
| 314 | .pix_fmt = AV_PIX_FMT_DXVA2_VLD, |
| 315 | .start_frame = dxva2_vc1_start_frame, |
| 316 | .decode_slice = dxva2_vc1_decode_slice, |
| 317 | .end_frame = dxva2_vc1_end_frame, |
| 318 | .frame_priv_data_size = sizeof(struct dxva2_picture_context), |
| 319 | }; |