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 Libav.
   7  *
   8  * Libav 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  * Libav 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 Libav; 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
  47     memset(pp, 0, sizeof(*pp));
  48     pp->wDecodedPictureIndex    =
  49     pp->wDeblockedPictureIndex  = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f);
  50     if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type)
  51         pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->last_picture.f);
  52     else
  53         pp->wForwardRefPictureIndex = 0xffff;
  54     if (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)
  55         pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->next_picture.f);
  56     else
  57         pp->wBackwardRefPictureIndex = 0xffff;
  58     if (v->profile == PROFILE_ADVANCED) {
  59         /* It is the cropped width/height -1 of the frame */
  60         pp->wPicWidthInMBminus1 = avctx->width  - 1;
  61         pp->wPicHeightInMBminus1= avctx->height - 1;
  62     } else {
  63         /* It is the coded width/height in macroblock -1 of the frame */
  64         pp->wPicWidthInMBminus1 = s->mb_width  - 1;
  65         pp->wPicHeightInMBminus1= s->mb_height - 1;
  66     }
  67     pp->bMacroblockWidthMinus1  = 15;
  68     pp->bMacroblockHeightMinus1 = 15;
  69     pp->bBlockWidthMinus1       = 7;
  70     pp->bBlockHeightMinus1      = 7;
  71     pp->bBPPminus1              = 7;
  72     if (s->picture_structure & PICT_TOP_FIELD)
  73         pp->bPicStructure      |= 0x01;
  74     if (s->picture_structure & PICT_BOTTOM_FIELD)
  75         pp->bPicStructure      |= 0x02;
  76     pp->bSecondField            = v->interlace && v->fcm != ILACE_FIELD && !s->first_field;
  77     pp->bPicIntra               = s->pict_type == AV_PICTURE_TYPE_I || v->bi_type;
  78     pp->bPicBackwardPrediction  = s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
  79     pp->bBidirectionalAveragingMode = (1                                           << 7) |
  80                                       ((DXVA_CONTEXT_CFG_INTRARESID(avctx, ctx) != 0) << 6) |
  81                                       ((DXVA_CONTEXT_CFG_RESIDACCEL(avctx, ctx) != 0) << 5) |
  82                                       ((v->lumscale != 32 || v->lumshift != 0)     << 4) |
  83                                       ((v->profile == PROFILE_ADVANCED)            << 3);
  84     pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) |
  85                                         (1                                       << 2) |
  86                                         (0                                       << 1) |
  87                                         (!s->quarter_sample                          );
  88     pp->bChromaFormat           = v->chromaformat;
  89     DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
  90     if (DXVA_CONTEXT_REPORT_ID(avctx, ctx) >= (1 << 16))
  91         DXVA_CONTEXT_REPORT_ID(avctx, ctx) = 1;
  92     pp->bPicScanFixed           = DXVA_CONTEXT_REPORT_ID(avctx, ctx) >> 8;
  93     pp->bPicScanMethod          = DXVA_CONTEXT_REPORT_ID(avctx, ctx) & 0xff;
  94     pp->bPicReadbackRequests    = 0;
  95     pp->bRcontrol               = v->rnd;
  96     pp->bPicSpatialResid8       = (v->panscanflag  << 7) |
  97                                   (v->refdist_flag << 6) |
  98                                   (s->loop_filter  << 5) |
  99                                   (v->fastuvmc     << 4) |
 100                                   (v->extended_mv  << 3) |
 101                                   (v->dquant       << 1) |
 102                                   (v->vstransform      );
 103     pp->bPicOverflowBlocks      = (v->quantizer_mode << 6) |
 104                                   (v->multires       << 5) |
 105                                   (v->resync_marker  << 4) |
 106                                   (v->rangered       << 3) |
 107                                   (s->max_b_frames       );
 108     pp->bPicExtrapolation       = (!v->interlace || v->fcm == PROGRESSIVE) ? 1 : 2;
 109     pp->bPicDeblocked           = ((!pp->bPicBackwardPrediction && v->overlap)        << 6) |
 110                                   ((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) |
 111                                   (s->loop_filter                                     << 1);
 112     pp->bPicDeblockConfined     = (v->postprocflag             << 7) |
 113                                   (v->broadcast                << 6) |
 114                                   (v->interlace                << 5) |
 115                                   (v->tfcntrflag               << 4) |
 116                                   (v->finterpflag              << 3) |
 117                                   ((s->pict_type != AV_PICTURE_TYPE_B) << 2) |
 118                                   (v->psf                      << 1) |
 119                                   (v->extended_dmv                 );
 120     if (s->pict_type != AV_PICTURE_TYPE_I)
 121         pp->bPic4MVallowed      = v->mv_mode == MV_PMODE_MIXED_MV ||
 122                                   (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
 123                                    v->mv_mode2 == MV_PMODE_MIXED_MV);
 124     if (v->profile == PROFILE_ADVANCED)
 125         pp->bPicOBMC            = (v->range_mapy_flag  << 7) |
 126                                   (v->range_mapy       << 4) |
 127                                   (v->range_mapuv_flag << 3) |
 128                                   (v->range_mapuv          );
 129     pp->bPicBinPB               = 0;
 130     pp->bMV_RPS                 = 0;
 131     pp->bReservedBits           = 0;
 132     if (s->picture_structure == PICT_FRAME) {
 133         pp->wBitstreamFcodes        = v->lumscale;
 134         pp->wBitstreamPCEelements   = v->lumshift;
 135     } else {
 136         /* Syntax: (top_field_param << 8) | bottom_field_param */
 137         pp->wBitstreamFcodes        = (v->lumscale << 8) | v->lumscale;
 138         pp->wBitstreamPCEelements   = (v->lumshift << 8) | v->lumshift;
 139     }
 140     pp->bBitstreamConcealmentNeed   = 0;
 141     pp->bBitstreamConcealmentMethod = 0;
 142 }
 143
 144 static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
 145                        unsigned position, unsigned size)
 146 {
 147     const VC1Context *v = avctx->priv_data;
 148     const MpegEncContext *s = &v->s;
 149
 150     memset(slice, 0, sizeof(*slice));
 151     slice->wHorizontalPosition = 0;
 152     slice->wVerticalPosition   = s->mb_y;
 153     slice->dwSliceBitsInBuffer = 8 * size;
 154     slice->dwSliceDataLocation = position;
 155     slice->bStartCodeBitOffset = 0;
 156     slice->bReservedBits       = 0;
 157     slice->wMBbitOffset        = get_bits_count(&s->gb);
 158     slice->wNumberMBsInSlice   = s->mb_width * s->mb_height; /* XXX We assume 1 slice */
 159     slice->wQuantizerScaleCode = v->pq;
 160     slice->wBadSliceChopping   = 0;
 161 }
 162
 163 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
 164                                              DECODER_BUFFER_DESC *bs,
 165                                              DECODER_BUFFER_DESC *sc)
 166 {
 167     const VC1Context *v = avctx->priv_data;
 168     AVDXVAContext *ctx = avctx->hwaccel_context;
 169     const MpegEncContext *s = &v->s;
 170     struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private;
 171
 172     DXVA_SliceInfo *slice = &ctx_pic->si;
 173
 174     static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
 175     const unsigned start_code_size = avctx->codec_id == AV_CODEC_ID_VC1 ? sizeof(start_code) : 0;
 176     const unsigned slice_size = slice->dwSliceBitsInBuffer / 8;
 177     const unsigned padding = 128 - ((start_code_size + slice_size) & 127);
 178     const unsigned data_size = start_code_size + slice_size + padding;
 179
 180     void     *dxva_data_ptr;
 181     uint8_t  *dxva_data;
 182     unsigned dxva_size;
 183     int result;
 184     unsigned type;
 185
 186 #if CONFIG_D3D11VA
 187     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
 188         type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
 189         if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
 190                                                        D3D11VA_CONTEXT(ctx)->decoder,
 191                                                        type,
 192                                                        &dxva_size, &dxva_data_ptr)))
 193             return -1;
 194     }
 195 #endif
 196 #if CONFIG_DXVA2
 197     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
 198         type = DXVA2_BitStreamDateBufferType;
 199         if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
 200                                                   type,
 201                                                   &dxva_data_ptr, &dxva_size)))
 202             return -1;
 203     }
 204 #endif
 205
 206     dxva_data = dxva_data_ptr;
 207     result = data_size <= dxva_size ? 0 : -1;
 208     if (!result) {
 209         if (start_code_size > 0)
 210             memcpy(dxva_data, start_code, start_code_size);
 211         memcpy(dxva_data + start_code_size,
 212                ctx_pic->bitstream + slice->dwSliceDataLocation, slice_size);
 213         if (padding > 0)
 214             memset(dxva_data + start_code_size + slice_size, 0, padding);
 215         slice->dwSliceBitsInBuffer = 8 * data_size;
 216     }
 217 #if CONFIG_D3D11VA
 218     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
 219         if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
 220             return -1;
 221 #endif
 222 #if CONFIG_DXVA2
 223     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
 224         if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
 225             return -1;
 226 #endif
 227     if (result)
 228         return result;
 229
 230 #if CONFIG_D3D11VA
 231     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
 232         D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
 233         memset(dsc11, 0, sizeof(*dsc11));
 234         dsc11->BufferType           = type;
 235         dsc11->DataSize             = data_size;
 236         dsc11->NumMBsInBuffer       = s->mb_width * s->mb_height;
 237
 238         type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
 239     }
 240 #endif
 241 #if CONFIG_DXVA2
 242     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
 243         DXVA2_DecodeBufferDesc *dsc2 = bs;
 244         memset(dsc2, 0, sizeof(*dsc2));
 245         dsc2->CompressedBufferType = type;
 246         dsc2->DataSize             = data_size;
 247         dsc2->NumMBsInBuffer       = s->mb_width * s->mb_height;
 248
 249         type = DXVA2_SliceControlBufferType;
 250     }
 251 #endif
 252     assert((data_size & 127) == 0);
 253
 254     return ff_dxva2_commit_buffer(avctx, ctx, sc,
 255                                   type,
 256                                   slice, sizeof(*slice), s->mb_width * s->mb_height);
 257 }
 258
 259 static int dxva2_vc1_start_frame(AVCodecContext *avctx,
 260                                  av_unused const uint8_t *buffer,
 261                                  av_unused uint32_t size)
 262 {
 263     const VC1Context *v = avctx->priv_data;
 264     AVDXVAContext *ctx = avctx->hwaccel_context;
 265     struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
 266
 267     if (DXVA_CONTEXT_DECODER(avctx, ctx) == NULL ||
 268         DXVA_CONTEXT_CFG(avctx, ctx) == NULL ||
 269         DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
 270         return -1;
 271     assert(ctx_pic);
 272
 273     fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
 274
 275     ctx_pic->bitstream_size = 0;
 276     ctx_pic->bitstream      = NULL;
 277     return 0;
 278 }
 279
 280 static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
 281                                   const uint8_t *buffer,
 282                                   uint32_t size)
 283 {
 284     const VC1Context *v = avctx->priv_data;
 285     const Picture *current_picture = v->s.current_picture_ptr;
 286     struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
 287
 288     if (ctx_pic->bitstream_size > 0)
 289         return -1;
 290
 291     if (avctx->codec_id == AV_CODEC_ID_VC1 &&
 292         size >= 4 && IS_MARKER(AV_RB32(buffer))) {
 293         buffer += 4;
 294         size   -= 4;
 295     }
 296
 297     ctx_pic->bitstream_size = size;
 298     ctx_pic->bitstream      = buffer;
 299
 300     fill_slice(avctx, &ctx_pic->si, 0, size);
 301     return 0;
 302 }
 303
 304 static int dxva2_vc1_end_frame(AVCodecContext *avctx)
 305 {
 306     VC1Context *v = avctx->priv_data;
 307     struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
 308     int ret;
 309
 310     if (ctx_pic->bitstream_size <= 0)
 311         return -1;
 312
 313     ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr->f,
 314                                     &ctx_pic->pp, sizeof(ctx_pic->pp),
 315                                     NULL, 0,
 316                                     commit_bitstream_and_slice_buffer);
 317     if (!ret)
 318         ff_mpeg_draw_horiz_band(&v->s, 0, avctx->height);
 319     return ret;
 320 }
 321
 322 #if CONFIG_WMV3_DXVA2_HWACCEL
 323 AVHWAccel ff_wmv3_dxva2_hwaccel = {
 324     .name           = "wmv3_dxva2",
 325     .type           = AVMEDIA_TYPE_VIDEO,
 326     .id             = AV_CODEC_ID_WMV3,
 327     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
 328     .start_frame    = dxva2_vc1_start_frame,
 329     .decode_slice   = dxva2_vc1_decode_slice,
 330     .end_frame      = dxva2_vc1_end_frame,
 331     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 332 };
 333 #endif
 334
 335 #if CONFIG_VC1_DXVA2_HWACCEL
 336 AVHWAccel ff_vc1_dxva2_hwaccel = {
 337     .name           = "vc1_dxva2",
 338     .type           = AVMEDIA_TYPE_VIDEO,
 339     .id             = AV_CODEC_ID_VC1,
 340     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
 341     .start_frame    = dxva2_vc1_start_frame,
 342     .decode_slice   = dxva2_vc1_decode_slice,
 343     .end_frame      = dxva2_vc1_end_frame,
 344     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 345 };
 346 #endif
 347
 348 #if CONFIG_WMV3_D3D11VA_HWACCEL
 349 AVHWAccel ff_wmv3_d3d11va_hwaccel = {
 350     .name           = "wmv3_d3d11va",
 351     .type           = AVMEDIA_TYPE_VIDEO,
 352     .id             = AV_CODEC_ID_WMV3,
 353     .pix_fmt        = AV_PIX_FMT_D3D11VA_VLD,
 354     .start_frame    = dxva2_vc1_start_frame,
 355     .decode_slice   = dxva2_vc1_decode_slice,
 356     .end_frame      = dxva2_vc1_end_frame,
 357     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 358 };
 359 #endif
 360
 361 #if CONFIG_VC1_D3D11VA_HWACCEL
 362 AVHWAccel ff_vc1_d3d11va_hwaccel = {
 363     .name           = "vc1_d3d11va",
 364     .type           = AVMEDIA_TYPE_VIDEO,
 365     .id             = AV_CODEC_ID_VC1,
 366     .pix_fmt        = AV_PIX_FMT_D3D11VA_VLD,
 367     .start_frame    = dxva2_vc1_start_frame,
 368     .decode_slice   = dxva2_vc1_decode_slice,
 369     .end_frame      = dxva2_vc1_end_frame,
 370     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 371 };
 372 #endif