libavcodec/dxva2_vc1.c

   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 "mpegutils.h"
  24 #include "vc1.h"
  25 #include "vc1data.h"
  26
  27 // The headers above may include w32threads.h, which uses the original
  28 // _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
  29 // potentially newer version.
  30 #include "dxva2_internal.h"
  31
  32 #define MAX_SLICES 1024
  33 struct dxva2_picture_context {
  34     DXVA_PictureParameters pp;
  35     unsigned               slice_count;
  36     DXVA_SliceInfo         slice[MAX_SLICES];
  37
  38     const uint8_t          *bitstream;
  39     unsigned               bitstream_size;
  40 };
  41
  42 static void fill_picture_parameters(AVCodecContext *avctx,
  43                                     AVDXVAContext *ctx, const VC1Context *v,
  44                                     DXVA_PictureParameters *pp)
  45 {
  46     const MpegEncContext *s = &v->s;
  47     const Picture *current_picture = s->current_picture_ptr;
  48     int intcomp = 0;
  49
  50     // determine if intensity compensation is needed
  51     if (s->pict_type == AV_PICTURE_TYPE_P) {
  52       if ((v->fcm == ILACE_FRAME && v->intcomp) || (v->fcm != ILACE_FRAME && v->mv_mode == MV_PMODE_INTENSITY_COMP)) {
  53         if (v->lumscale != 32 || v->lumshift != 0 || (s->picture_structure != PICT_FRAME && (v->lumscale2 != 32 || v->lumshift2 != 0)))
  54           intcomp = 1;
  55       }
  56     }
  57
  58     memset(pp, 0, sizeof(*pp));
  59     pp->wDecodedPictureIndex    =
  60     pp->wDeblockedPictureIndex  = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f);
  61     if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type)
  62         pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->last_picture.f);
  63     else
  64         pp->wForwardRefPictureIndex = 0xffff;
  65     if (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)
  66         pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->next_picture.f);
  67     else
  68         pp->wBackwardRefPictureIndex = 0xffff;
  69     if (v->profile == PROFILE_ADVANCED) {
  70         /* It is the cropped width/height -1 of the frame */
  71         pp->wPicWidthInMBminus1 = avctx->width  - 1;
  72         pp->wPicHeightInMBminus1= avctx->height - 1;
  73     } else {
  74         /* It is the coded width/height in macroblock -1 of the frame */
  75         pp->wPicWidthInMBminus1 = s->mb_width  - 1;
  76         pp->wPicHeightInMBminus1= s->mb_height - 1;
  77     }
  78     pp->bMacroblockWidthMinus1  = 15;
  79     pp->bMacroblockHeightMinus1 = 15;
  80     pp->bBlockWidthMinus1       = 7;
  81     pp->bBlockHeightMinus1      = 7;
  82     pp->bBPPminus1              = 7;
  83     if (s->picture_structure & PICT_TOP_FIELD)
  84         pp->bPicStructure      |= 0x01;
  85     if (s->picture_structure & PICT_BOTTOM_FIELD)
  86         pp->bPicStructure      |= 0x02;
  87     pp->bSecondField            = v->interlace && v->fcm == ILACE_FIELD && v->second_field;
  88     pp->bPicIntra               = s->pict_type == AV_PICTURE_TYPE_I || v->bi_type;
  89     pp->bPicBackwardPrediction  = s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
  90     pp->bBidirectionalAveragingMode = (1                                           << 7) |
  91                                       ((DXVA_CONTEXT_CFG_INTRARESID(avctx, ctx) != 0) << 6) |
  92                                       ((DXVA_CONTEXT_CFG_RESIDACCEL(avctx, ctx) != 0) << 5) |
  93                                       (intcomp                                     << 4) |
  94                                       ((v->profile == PROFILE_ADVANCED)            << 3);
  95     pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) |
  96                                         (1                                       << 2) |
  97                                         (0                                       << 1) |
  98                                         (!s->quarter_sample                          );
  99     pp->bChromaFormat           = v->chromaformat;
 100     DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
 101     if (DXVA_CONTEXT_REPORT_ID(avctx, ctx) >= (1 << 16))
 102         DXVA_CONTEXT_REPORT_ID(avctx, ctx) = 1;
 103     pp->bPicScanFixed           = DXVA_CONTEXT_REPORT_ID(avctx, ctx) >> 8;
 104     pp->bPicScanMethod          = DXVA_CONTEXT_REPORT_ID(avctx, ctx) & 0xff;
 105     pp->bPicReadbackRequests    = 0;
 106     pp->bRcontrol               = v->rnd;
 107     pp->bPicSpatialResid8       = (v->panscanflag  << 7) |
 108                                   (v->refdist_flag << 6) |
 109                                   (s->loop_filter  << 5) |
 110                                   (v->fastuvmc     << 4) |
 111                                   (v->extended_mv  << 3) |
 112                                   (v->dquant       << 1) |
 113                                   (v->vstransform      );
 114     pp->bPicOverflowBlocks      = (v->quantizer_mode << 6) |
 115                                   (v->multires       << 5) |
 116                                   (v->resync_marker  << 4) |
 117                                   (v->rangered       << 3) |
 118                                   (s->max_b_frames       );
 119     pp->bPicExtrapolation       = (!v->interlace || v->fcm == PROGRESSIVE) ? 1 : 2;
 120     pp->bPicDeblocked           = ((!pp->bPicBackwardPrediction && v->overlap)        << 6) |
 121                                   ((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) |
 122                                   (s->loop_filter                                     << 1);
 123     pp->bPicDeblockConfined     = (v->postprocflag             << 7) |
 124                                   (v->broadcast                << 6) |
 125                                   (v->interlace                << 5) |
 126                                   (v->tfcntrflag               << 4) |
 127                                   (v->finterpflag              << 3) |
 128                                   ((s->pict_type != AV_PICTURE_TYPE_B) << 2) |
 129                                   (v->psf                      << 1) |
 130                                   (v->extended_dmv                 );
 131     if (s->pict_type != AV_PICTURE_TYPE_I)
 132         pp->bPic4MVallowed      = v->mv_mode == MV_PMODE_MIXED_MV ||
 133                                   (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
 134                                    v->mv_mode2 == MV_PMODE_MIXED_MV);
 135     if (v->profile == PROFILE_ADVANCED)
 136         pp->bPicOBMC            = (v->range_mapy_flag  << 7) |
 137                                   (v->range_mapy       << 4) |
 138                                   (v->range_mapuv_flag << 3) |
 139                                   (v->range_mapuv          );
 140     pp->bPicBinPB               = 0;
 141     pp->bMV_RPS                 = (v->fcm == ILACE_FIELD && pp->bPicBackwardPrediction) ? v->refdist + 9 : 0;
 142     pp->bReservedBits           = v->pq;
 143     if (s->picture_structure == PICT_FRAME) {
 144         if (intcomp) {
 145             pp->wBitstreamFcodes      = v->lumscale;
 146             pp->wBitstreamPCEelements = v->lumshift;
 147         } else {
 148             pp->wBitstreamFcodes      = 32;
 149             pp->wBitstreamPCEelements = 0;
 150         }
 151     } else {
 152         /* Syntax: (top_field_param << 8) | bottom_field_param */
 153         if (intcomp) {
 154             pp->wBitstreamFcodes      = (v->lumscale << 8) | v->lumscale2;
 155             pp->wBitstreamPCEelements = (v->lumshift << 8) | v->lumshift2;
 156         } else {
 157             pp->wBitstreamFcodes      = (32 << 8) | 32;
 158             pp->wBitstreamPCEelements = 0;
 159         }
 160     }
 161     pp->bBitstreamConcealmentNeed   = 0;
 162     pp->bBitstreamConcealmentMethod = 0;
 163 }
 164
 165 static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
 166                        unsigned position, unsigned size)
 167 {
 168     const VC1Context *v = avctx->priv_data;
 169     const MpegEncContext *s = &v->s;
 170
 171     memset(slice, 0, sizeof(*slice));
 172     slice->wHorizontalPosition = 0;
 173     slice->wVerticalPosition   = s->mb_y;
 174     slice->dwSliceBitsInBuffer = 8 * size;
 175     slice->dwSliceDataLocation = position;
 176     slice->bStartCodeBitOffset = 0;
 177     slice->bReservedBits       = (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type) ? v->bfraction_lut_index + 9 : 0;
 178     slice->wMBbitOffset        = v->p_frame_skipped ? 0xffff : get_bits_count(&s->gb) + (avctx->codec_id == AV_CODEC_ID_VC1 ? 32 : 0);
 179     /* XXX We store the index of the first MB and it will be fixed later */
 180     slice->wNumberMBsInSlice   = (s->mb_y >> v->field_mode) * s->mb_width + s->mb_x;
 181     slice->wQuantizerScaleCode = v->pq;
 182     slice->wBadSliceChopping   = 0;
 183 }
 184
 185 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
 186                                              DECODER_BUFFER_DESC *bs,
 187                                              DECODER_BUFFER_DESC *sc)
 188 {
 189     const VC1Context *v = avctx->priv_data;
 190     AVDXVAContext *ctx = avctx->hwaccel_context;
 191     const MpegEncContext *s = &v->s;
 192     struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private;
 193
 194     static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
 195     const unsigned start_code_size = avctx->codec_id == AV_CODEC_ID_VC1 ? sizeof(start_code) : 0;
 196     const unsigned mb_count = s->mb_width * (s->mb_height >> v->field_mode);
 197     DXVA_SliceInfo *slice = NULL;
 198     void     *dxva_data_ptr;
 199     uint8_t  *dxva_data, *current, *end;
 200     unsigned dxva_size;
 201     unsigned padding;
 202     unsigned i;
 203     unsigned type;
 204
 205 #if CONFIG_D3D11VA
 206     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
 207         type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
 208         if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
 209                                                        D3D11VA_CONTEXT(ctx)->decoder,
 210                                                        type,
 211                                                        &dxva_size, &dxva_data_ptr)))
 212             return -1;
 213     }
 214 #endif
 215 #if CONFIG_DXVA2
 216     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
 217         type = DXVA2_BitStreamDateBufferType;
 218         if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
 219                                                   type,
 220                                                   &dxva_data_ptr, &dxva_size)))
 221             return -1;
 222     }
 223 #endif
 224
 225     dxva_data = dxva_data_ptr;
 226     current = dxva_data;
 227     end = dxva_data + dxva_size;
 228
 229     for (i = 0; i < ctx_pic->slice_count; i++) {
 230         unsigned position, size;
 231         slice    = &ctx_pic->slice[i];
 232         position = slice->dwSliceDataLocation;
 233         size     = slice->dwSliceBitsInBuffer / 8;
 234         if (start_code_size + size > end - current) {
 235             av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
 236             break;
 237         }
 238         slice->dwSliceDataLocation = current - dxva_data;
 239
 240         if (i < ctx_pic->slice_count - 1)
 241             slice->wNumberMBsInSlice =
 242                 slice[1].wNumberMBsInSlice - slice[0].wNumberMBsInSlice;
 243         else
 244             slice->wNumberMBsInSlice =
 245                 mb_count - slice[0].wNumberMBsInSlice;
 246
 247         /* write the appropriate frame, field or slice start code */
 248         if (start_code_size) {
 249             memcpy(current, start_code, start_code_size);
 250             if (i == 0 && v->second_field)
 251                 current[3] = 0x0c;
 252             else if (i > 0)
 253                 current[3] = 0x0b;
 254
 255             current += start_code_size;
 256             slice->dwSliceBitsInBuffer += start_code_size * 8;
 257         }
 258
 259         memcpy(current, &ctx_pic->bitstream[position], size);
 260         current += size;
 261     }
 262     padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
 263     if (slice && padding > 0) {
 264         memset(current, 0, padding);
 265         current += padding;
 266         slice->dwSliceBitsInBuffer += padding * 8;
 267     }
 268
 269 #if CONFIG_D3D11VA
 270     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
 271         if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
 272             return -1;
 273 #endif
 274 #if CONFIG_DXVA2
 275     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
 276         if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
 277             return -1;
 278 #endif
 279     if (i < ctx_pic->slice_count)
 280         return -1;
 281
 282 #if CONFIG_D3D11VA
 283     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
 284         D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
 285         memset(dsc11, 0, sizeof(*dsc11));
 286         dsc11->BufferType           = type;
 287         dsc11->DataSize             = current - dxva_data;
 288         dsc11->NumMBsInBuffer       = mb_count;
 289
 290         type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
 291     }
 292 #endif
 293 #if CONFIG_DXVA2
 294     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
 295         DXVA2_DecodeBufferDesc *dsc2 = bs;
 296         memset(dsc2, 0, sizeof(*dsc2));
 297         dsc2->CompressedBufferType = type;
 298         dsc2->DataSize             = current - dxva_data;
 299         dsc2->NumMBsInBuffer       = mb_count;
 300
 301         type = DXVA2_SliceControlBufferType;
 302     }
 303 #endif
 304
 305     return ff_dxva2_commit_buffer(avctx, ctx, sc,
 306                                   type,
 307                                   ctx_pic->slice,
 308                                   ctx_pic->slice_count * sizeof(*ctx_pic->slice),
 309                                   mb_count);
 310 }
 311
 312 static int dxva2_vc1_start_frame(AVCodecContext *avctx,
 313                                  av_unused const uint8_t *buffer,
 314                                  av_unused uint32_t size)
 315 {
 316     const VC1Context *v = avctx->priv_data;
 317     AVDXVAContext *ctx = avctx->hwaccel_context;
 318     struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
 319
 320     if (!DXVA_CONTEXT_VALID(avctx, ctx))
 321         return -1;
 322     assert(ctx_pic);
 323
 324     fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
 325
 326     ctx_pic->slice_count    = 0;
 327     ctx_pic->bitstream_size = 0;
 328     ctx_pic->bitstream      = NULL;
 329     return 0;
 330 }
 331
 332 static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
 333                                   const uint8_t *buffer,
 334                                   uint32_t size)
 335 {
 336     const VC1Context *v = avctx->priv_data;
 337     const Picture *current_picture = v->s.current_picture_ptr;
 338     struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
 339     unsigned position;
 340
 341     if (ctx_pic->slice_count >= MAX_SLICES) {
 342         avpriv_request_sample(avctx, "%d slices in dxva2",
 343                               ctx_pic->slice_count);
 344         return -1;
 345     }
 346
 347     if (avctx->codec_id == AV_CODEC_ID_VC1 &&
 348         size >= 4 && IS_MARKER(AV_RB32(buffer))) {
 349         buffer += 4;
 350         size   -= 4;
 351     }
 352
 353     if (!ctx_pic->bitstream)
 354         ctx_pic->bitstream = buffer;
 355     ctx_pic->bitstream_size += size;
 356
 357     position = buffer - ctx_pic->bitstream;
 358     fill_slice(avctx, &ctx_pic->slice[ctx_pic->slice_count++], position, size);
 359     return 0;
 360 }
 361
 362 static int dxva2_vc1_end_frame(AVCodecContext *avctx)
 363 {
 364     VC1Context *v = avctx->priv_data;
 365     struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
 366     int ret;
 367
 368     if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
 369         return -1;
 370
 371     ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr->f,
 372                                     &ctx_pic->pp, sizeof(ctx_pic->pp),
 373                                     NULL, 0,
 374                                     commit_bitstream_and_slice_buffer);
 375     if (!ret)
 376         ff_mpeg_draw_horiz_band(&v->s, 0, avctx->height);
 377     return ret;
 378 }
 379
 380 #if CONFIG_WMV3_DXVA2_HWACCEL
 381 AVHWAccel ff_wmv3_dxva2_hwaccel = {
 382     .name           = "wmv3_dxva2",
 383     .type           = AVMEDIA_TYPE_VIDEO,
 384     .id             = AV_CODEC_ID_WMV3,
 385     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
 386     .start_frame    = dxva2_vc1_start_frame,
 387     .decode_slice   = dxva2_vc1_decode_slice,
 388     .end_frame      = dxva2_vc1_end_frame,
 389     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 390 };
 391 #endif
 392
 393 #if CONFIG_VC1_DXVA2_HWACCEL
 394 AVHWAccel ff_vc1_dxva2_hwaccel = {
 395     .name           = "vc1_dxva2",
 396     .type           = AVMEDIA_TYPE_VIDEO,
 397     .id             = AV_CODEC_ID_VC1,
 398     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
 399     .start_frame    = dxva2_vc1_start_frame,
 400     .decode_slice   = dxva2_vc1_decode_slice,
 401     .end_frame      = dxva2_vc1_end_frame,
 402     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 403 };
 404 #endif
 405
 406 #if CONFIG_WMV3_D3D11VA_HWACCEL
 407 AVHWAccel ff_wmv3_d3d11va_hwaccel = {
 408     .name           = "wmv3_d3d11va",
 409     .type           = AVMEDIA_TYPE_VIDEO,
 410     .id             = AV_CODEC_ID_WMV3,
 411     .pix_fmt        = AV_PIX_FMT_D3D11VA_VLD,
 412     .start_frame    = dxva2_vc1_start_frame,
 413     .decode_slice   = dxva2_vc1_decode_slice,
 414     .end_frame      = dxva2_vc1_end_frame,
 415     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 416 };
 417 #endif
 418
 419 #if CONFIG_VC1_D3D11VA_HWACCEL
 420 AVHWAccel ff_vc1_d3d11va_hwaccel = {
 421     .name           = "vc1_d3d11va",
 422     .type           = AVMEDIA_TYPE_VIDEO,
 423     .id             = AV_CODEC_ID_VC1,
 424     .pix_fmt        = AV_PIX_FMT_D3D11VA_VLD,
 425     .start_frame    = dxva2_vc1_start_frame,
 426     .decode_slice   = dxva2_vc1_decode_slice,
 427     .end_frame      = dxva2_vc1_end_frame,
 428     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 429 };
 430 #endif