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 "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                                     AVDXVAContext *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
  43     memset(pp, 0, sizeof(*pp));
  44     pp->wDecodedPictureIndex    =
  45     pp->wDeblockedPictureIndex  = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f);
  46     if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type)
  47         pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->last_picture.f);
  48     else
  49         pp->wForwardRefPictureIndex = 0xffff;
  50     if (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)
  51         pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->next_picture.f);
  52     else
  53         pp->wBackwardRefPictureIndex = 0xffff;
  54     if (v->profile == PROFILE_ADVANCED) {
  55         /* It is the cropped width/height -1 of the frame */
  56         pp->wPicWidthInMBminus1 = avctx->width  - 1;
  57         pp->wPicHeightInMBminus1= avctx->height - 1;
  58     } else {
  59         /* It is the coded width/height in macroblock -1 of the frame */
  60         pp->wPicWidthInMBminus1 = s->mb_width  - 1;
  61         pp->wPicHeightInMBminus1= s->mb_height - 1;
  62     }
  63     pp->bMacroblockWidthMinus1  = 15;
  64     pp->bMacroblockHeightMinus1 = 15;
  65     pp->bBlockWidthMinus1       = 7;
  66     pp->bBlockHeightMinus1      = 7;
  67     pp->bBPPminus1              = 7;
  68     if (s->picture_structure & PICT_TOP_FIELD)
  69         pp->bPicStructure      |= 0x01;
  70     if (s->picture_structure & PICT_BOTTOM_FIELD)
  71         pp->bPicStructure      |= 0x02;
  72     pp->bSecondField            = v->interlace && v->fcm != ILACE_FIELD && !s->first_field;
  73     pp->bPicIntra               = s->pict_type == AV_PICTURE_TYPE_I || v->bi_type;
  74     pp->bPicBackwardPrediction  = s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
  75     pp->bBidirectionalAveragingMode = (1                                           << 7) |
  76                                       ((DXVA_CONTEXT_CFG_INTRARESID(avctx, ctx) != 0) << 6) |
  77                                       ((DXVA_CONTEXT_CFG_RESIDACCEL(avctx, ctx) != 0) << 5) |
  78                                       ((v->lumscale != 32 || v->lumshift != 0)     << 4) |
  79                                       ((v->profile == PROFILE_ADVANCED)            << 3);
  80     pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) |
  81                                         (1                                       << 2) |
  82                                         (0                                       << 1) |
  83                                         (!s->quarter_sample                          );
  84     pp->bChromaFormat           = v->chromaformat;
  85     DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
  86     if (DXVA_CONTEXT_REPORT_ID(avctx, ctx) >= (1 << 16))
  87         DXVA_CONTEXT_REPORT_ID(avctx, ctx) = 1;
  88     pp->bPicScanFixed           = DXVA_CONTEXT_REPORT_ID(avctx, ctx) >> 8;
  89     pp->bPicScanMethod          = DXVA_CONTEXT_REPORT_ID(avctx, ctx) & 0xff;
  90     pp->bPicReadbackRequests    = 0;
  91     pp->bRcontrol               = v->rnd;
  92     pp->bPicSpatialResid8       = (v->panscanflag  << 7) |
  93                                   (v->refdist_flag << 6) |
  94                                   (s->loop_filter  << 5) |
  95                                   (v->fastuvmc     << 4) |
  96                                   (v->extended_mv  << 3) |
  97                                   (v->dquant       << 1) |
  98                                   (v->vstransform      );
  99     pp->bPicOverflowBlocks      = (v->quantizer_mode << 6) |
 100                                   (v->multires       << 5) |
 101                                   (v->resync_marker  << 4) |
 102                                   (v->rangered       << 3) |
 103                                   (s->max_b_frames       );
 104     pp->bPicExtrapolation       = (!v->interlace || v->fcm == PROGRESSIVE) ? 1 : 2;
 105     pp->bPicDeblocked           = ((!pp->bPicBackwardPrediction && v->overlap)        << 6) |
 106                                   ((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) |
 107                                   (s->loop_filter                                     << 1);
 108     pp->bPicDeblockConfined     = (v->postprocflag             << 7) |
 109                                   (v->broadcast                << 6) |
 110                                   (v->interlace                << 5) |
 111                                   (v->tfcntrflag               << 4) |
 112                                   (v->finterpflag              << 3) |
 113                                   ((s->pict_type != AV_PICTURE_TYPE_B) << 2) |
 114                                   (v->psf                      << 1) |
 115                                   (v->extended_dmv                 );
 116     if (s->pict_type != AV_PICTURE_TYPE_I)
 117         pp->bPic4MVallowed      = v->mv_mode == MV_PMODE_MIXED_MV ||
 118                                   (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
 119                                    v->mv_mode2 == MV_PMODE_MIXED_MV);
 120     if (v->profile == PROFILE_ADVANCED)
 121         pp->bPicOBMC            = (v->range_mapy_flag  << 7) |
 122                                   (v->range_mapy       << 4) |
 123                                   (v->range_mapuv_flag << 3) |
 124                                   (v->range_mapuv          );
 125     pp->bPicBinPB               = 0;
 126     pp->bMV_RPS                 = 0;
 127     pp->bReservedBits           = 0;
 128     if (s->picture_structure == PICT_FRAME) {
 129         pp->wBitstreamFcodes        = v->lumscale;
 130         pp->wBitstreamPCEelements   = v->lumshift;
 131     } else {
 132         /* Syntax: (top_field_param << 8) | bottom_field_param */
 133         pp->wBitstreamFcodes        = (v->lumscale << 8) | v->lumscale;
 134         pp->wBitstreamPCEelements   = (v->lumshift << 8) | v->lumshift;
 135     }
 136     pp->bBitstreamConcealmentNeed   = 0;
 137     pp->bBitstreamConcealmentMethod = 0;
 138 }
 139
 140 static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
 141                        unsigned position, unsigned size)
 142 {
 143     const VC1Context *v = avctx->priv_data;
 144     const MpegEncContext *s = &v->s;
 145
 146     memset(slice, 0, sizeof(*slice));
 147     slice->wHorizontalPosition = 0;
 148     slice->wVerticalPosition   = s->mb_y;
 149     slice->dwSliceBitsInBuffer = 8 * size;
 150     slice->dwSliceDataLocation = position;
 151     slice->bStartCodeBitOffset = 0;
 152     slice->bReservedBits       = 0;
 153     slice->wMBbitOffset        = get_bits_count(&s->gb);
 154     slice->wNumberMBsInSlice   = s->mb_width * s->mb_height; /* XXX We assume 1 slice */
 155     slice->wQuantizerScaleCode = v->pq;
 156     slice->wBadSliceChopping   = 0;
 157 }
 158
 159 static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
 160                                              DECODER_BUFFER_DESC *bs,
 161                                              DECODER_BUFFER_DESC *sc)
 162 {
 163     const VC1Context *v = avctx->priv_data;
 164     AVDXVAContext *ctx = avctx->hwaccel_context;
 165     const MpegEncContext *s = &v->s;
 166     struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private;
 167
 168     DXVA_SliceInfo *slice = &ctx_pic->si;
 169
 170     static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
 171     const unsigned start_code_size = avctx->codec_id == AV_CODEC_ID_VC1 ? sizeof(start_code) : 0;
 172     const unsigned slice_size = slice->dwSliceBitsInBuffer / 8;
 173     const unsigned padding = 128 - ((start_code_size + slice_size) & 127);
 174     const unsigned data_size = start_code_size + slice_size + padding;
 175
 176     void     *dxva_data_ptr;
 177     uint8_t  *dxva_data;
 178     unsigned dxva_size;
 179     int result;
 180     unsigned type;
 181
 182 #if CONFIG_D3D11VA
 183     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
 184         type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
 185         if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
 186                                                        D3D11VA_CONTEXT(ctx)->decoder,
 187                                                        type,
 188                                                        &dxva_size, &dxva_data_ptr)))
 189             return -1;
 190     }
 191 #endif
 192 #if CONFIG_DXVA2
 193     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
 194         type = DXVA2_BitStreamDateBufferType;
 195         if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
 196                                                   type,
 197                                                   &dxva_data_ptr, &dxva_size)))
 198             return -1;
 199     }
 200 #endif
 201
 202     dxva_data = dxva_data_ptr;
 203     result = data_size <= dxva_size ? 0 : -1;
 204     if (!result) {
 205         if (start_code_size > 0)
 206             memcpy(dxva_data, start_code, start_code_size);
 207         memcpy(dxva_data + start_code_size,
 208                ctx_pic->bitstream + slice->dwSliceDataLocation, slice_size);
 209         if (padding > 0)
 210             memset(dxva_data + start_code_size + slice_size, 0, padding);
 211         slice->dwSliceBitsInBuffer = 8 * data_size;
 212     }
 213 #if CONFIG_D3D11VA
 214     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
 215         if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
 216             return -1;
 217 #endif
 218 #if CONFIG_DXVA2
 219     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
 220         if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
 221             return -1;
 222 #endif
 223     if (result)
 224         return result;
 225
 226 #if CONFIG_D3D11VA
 227     if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
 228         D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
 229         memset(dsc11, 0, sizeof(*dsc11));
 230         dsc11->BufferType           = type;
 231         dsc11->DataSize             = data_size;
 232         dsc11->NumMBsInBuffer       = s->mb_width * s->mb_height;
 233
 234         type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
 235     }
 236 #endif
 237 #if CONFIG_DXVA2
 238     if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
 239         DXVA2_DecodeBufferDesc *dsc2 = bs;
 240         memset(dsc2, 0, sizeof(*dsc2));
 241         dsc2->CompressedBufferType = type;
 242         dsc2->DataSize             = data_size;
 243         dsc2->NumMBsInBuffer       = s->mb_width * s->mb_height;
 244
 245         type = DXVA2_SliceControlBufferType;
 246     }
 247 #endif
 248     assert((data_size & 127) == 0);
 249
 250     return ff_dxva2_commit_buffer(avctx, ctx, sc,
 251                                   type,
 252                                   slice, sizeof(*slice), s->mb_width * s->mb_height);
 253 }
 254
 255 static int dxva2_vc1_start_frame(AVCodecContext *avctx,
 256                                  av_unused const uint8_t *buffer,
 257                                  av_unused uint32_t size)
 258 {
 259     const VC1Context *v = avctx->priv_data;
 260     AVDXVAContext *ctx = avctx->hwaccel_context;
 261     struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
 262
 263     if (DXVA_CONTEXT_DECODER(avctx, ctx) == NULL ||
 264         DXVA_CONTEXT_CFG(avctx, ctx) == NULL ||
 265         DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
 266         return -1;
 267     assert(ctx_pic);
 268
 269     fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
 270
 271     ctx_pic->bitstream_size = 0;
 272     ctx_pic->bitstream      = NULL;
 273     return 0;
 274 }
 275
 276 static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
 277                                   const uint8_t *buffer,
 278                                   uint32_t size)
 279 {
 280     const VC1Context *v = avctx->priv_data;
 281     const Picture *current_picture = v->s.current_picture_ptr;
 282     struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
 283
 284     if (ctx_pic->bitstream_size > 0)
 285         return -1;
 286
 287     if (avctx->codec_id == AV_CODEC_ID_VC1 &&
 288         size >= 4 && IS_MARKER(AV_RB32(buffer))) {
 289         buffer += 4;
 290         size   -= 4;
 291     }
 292
 293     ctx_pic->bitstream_size = size;
 294     ctx_pic->bitstream      = buffer;
 295
 296     fill_slice(avctx, &ctx_pic->si, 0, size);
 297     return 0;
 298 }
 299
 300 static int dxva2_vc1_end_frame(AVCodecContext *avctx)
 301 {
 302     VC1Context *v = avctx->priv_data;
 303     struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
 304     int ret;
 305
 306     if (ctx_pic->bitstream_size <= 0)
 307         return -1;
 308
 309     ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr->f,
 310                                     &ctx_pic->pp, sizeof(ctx_pic->pp),
 311                                     NULL, 0,
 312                                     commit_bitstream_and_slice_buffer);
 313     if (!ret)
 314         ff_mpeg_draw_horiz_band(&v->s, 0, avctx->height);
 315     return ret;
 316 }
 317
 318 #if CONFIG_WMV3_DXVA2_HWACCEL
 319 AVHWAccel ff_wmv3_dxva2_hwaccel = {
 320     .name           = "wmv3_dxva2",
 321     .type           = AVMEDIA_TYPE_VIDEO,
 322     .id             = AV_CODEC_ID_WMV3,
 323     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
 324     .start_frame    = dxva2_vc1_start_frame,
 325     .decode_slice   = dxva2_vc1_decode_slice,
 326     .end_frame      = dxva2_vc1_end_frame,
 327     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 328 };
 329 #endif
 330
 331 #if CONFIG_VC1_DXVA2_HWACCEL
 332 AVHWAccel ff_vc1_dxva2_hwaccel = {
 333     .name           = "vc1_dxva2",
 334     .type           = AVMEDIA_TYPE_VIDEO,
 335     .id             = AV_CODEC_ID_VC1,
 336     .pix_fmt        = AV_PIX_FMT_DXVA2_VLD,
 337     .start_frame    = dxva2_vc1_start_frame,
 338     .decode_slice   = dxva2_vc1_decode_slice,
 339     .end_frame      = dxva2_vc1_end_frame,
 340     .frame_priv_data_size = sizeof(struct dxva2_picture_context),
 341 };
 342 #endif
 343
 344 #if CONFIG_WMV3_D3D11VA_HWACCEL
 345 AVHWAccel ff_wmv3_d3d11va_hwaccel = {
 346     .name           = "wmv3_d3d11va",
 347     .type           = AVMEDIA_TYPE_VIDEO,
 348     .id             = AV_CODEC_ID_WMV3,
 349     .pix_fmt        = AV_PIX_FMT_D3D11VA_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_D3D11VA_HWACCEL
 358 AVHWAccel ff_vc1_d3d11va_hwaccel = {
 359     .name           = "vc1_d3d11va",
 360     .type           = AVMEDIA_TYPE_VIDEO,
 361     .id             = AV_CODEC_ID_VC1,
 362     .pix_fmt        = AV_PIX_FMT_D3D11VA_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