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