git.sesse.net Git - ffmpeg/blob - libavcodec/vaapi_vc1.c

   1 /*
   2  * VC-1 HW decode acceleration through VA API
   3  *
   4  * Copyright (C) 2008-2009 Splitted-Desktop Systems
   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 "internal.h"
  24 #include "vaapi_decode.h"
  25 #include "vc1.h"
  26 #include "vc1data.h"
  27
  28 /** Translate FFmpeg MV modes to VA API */
  29 static int get_VAMvModeVC1(enum MVModes mv_mode)
  30 {
  31     switch (mv_mode) {
  32     case MV_PMODE_1MV_HPEL_BILIN: return VAMvMode1MvHalfPelBilinear;
  33     case MV_PMODE_1MV:            return VAMvMode1Mv;
  34     case MV_PMODE_1MV_HPEL:       return VAMvMode1MvHalfPel;
  35     case MV_PMODE_MIXED_MV:       return VAMvModeMixedMv;
  36     case MV_PMODE_INTENSITY_COMP: return VAMvModeIntensityCompensation;
  37     }
  38     return 0;
  39 }
  40
  41 /** Check whether the MVTYPEMB bitplane is present */
  42 static inline int vc1_has_MVTYPEMB_bitplane(const VC1Context *v)
  43 {
  44     if (v->mv_type_is_raw)
  45         return 0;
  46     return v->s.pict_type == AV_PICTURE_TYPE_P &&
  47            (v->mv_mode == MV_PMODE_MIXED_MV ||
  48             (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
  49              v->mv_mode2 == MV_PMODE_MIXED_MV));
  50 }
  51
  52 /** Check whether the SKIPMB bitplane is present */
  53 static inline int vc1_has_SKIPMB_bitplane(const VC1Context *v)
  54 {
  55     if (v->skip_is_raw)
  56         return 0;
  57     return v->s.pict_type == AV_PICTURE_TYPE_P ||
  58            (v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type);
  59 }
  60
  61 /** Check whether the DIRECTMB bitplane is present */
  62 static inline int vc1_has_DIRECTMB_bitplane(const VC1Context *v)
  63 {
  64     if (v->dmb_is_raw)
  65         return 0;
  66     return v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
  67 }
  68
  69 /** Check whether the ACPRED bitplane is present */
  70 static inline int vc1_has_ACPRED_bitplane(const VC1Context *v)
  71 {
  72     if (v->acpred_is_raw)
  73         return 0;
  74     return v->profile == PROFILE_ADVANCED &&
  75            (v->s.pict_type == AV_PICTURE_TYPE_I ||
  76             (v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type));
  77 }
  78
  79 /** Check whether the OVERFLAGS bitplane is present */
  80 static inline int vc1_has_OVERFLAGS_bitplane(const VC1Context *v)
  81 {
  82     if (v->overflg_is_raw)
  83         return 0;
  84     return v->profile == PROFILE_ADVANCED &&
  85            (v->s.pict_type == AV_PICTURE_TYPE_I ||
  86             (v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type)) &&
  87            (v->overlap && v->pq <= 8) &&
  88            v->condover == CONDOVER_SELECT;
  89 }
  90
  91 /** Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */
  92 static int vc1_get_PTYPE(const VC1Context *v)
  93 {
  94     const MpegEncContext *s = &v->s;
  95     switch (s->pict_type) {
  96     case AV_PICTURE_TYPE_I: return 0;
  97     case AV_PICTURE_TYPE_P: return v->p_frame_skipped ? 4 : 1;
  98     case AV_PICTURE_TYPE_B: return v->bi_type         ? 3 : 2;
  99     }
 100     return 0;
 101 }
 102
 103 /** Reconstruct bitstream MVMODE (7.1.1.32) */
 104 static inline VAMvModeVC1 vc1_get_MVMODE(const VC1Context *v)
 105 {
 106     if (v->s.pict_type == AV_PICTURE_TYPE_P ||
 107         (v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type))
 108         return get_VAMvModeVC1(v->mv_mode);
 109     return 0;
 110 }
 111
 112 /** Reconstruct bitstream MVMODE2 (7.1.1.33) */
 113 static inline VAMvModeVC1 vc1_get_MVMODE2(const VC1Context *v)
 114 {
 115     if (v->s.pict_type == AV_PICTURE_TYPE_P && v->mv_mode == MV_PMODE_INTENSITY_COMP)
 116         return get_VAMvModeVC1(v->mv_mode2);
 117     return 0;
 118 }
 119
 120 /** Reconstruct bitstream TTFRM (7.1.1.41, Table-53) */
 121 static inline int vc1_get_TTFRM(const VC1Context *v)
 122 {
 123     switch (v->ttfrm) {
 124     case TT_8X8: return 0;
 125     case TT_8X4: return 1;
 126     case TT_4X8: return 2;
 127     case TT_4X4: return 3;
 128     }
 129     return 0;
 130 }
 131
 132 /** Pack FFmpeg bitplanes into a VABitPlaneBuffer element */
 133 static inline void vc1_pack_bitplanes(uint8_t *bitplane, int n, const uint8_t *ff_bp[3], int x, int y, int stride)
 134 {
 135     const int bitplane_index = n / 2;
 136     const int ff_bp_index = y * stride + x;
 137     uint8_t v = 0;
 138     if (ff_bp[0])
 139         v = ff_bp[0][ff_bp_index];
 140     if (ff_bp[1])
 141         v |= ff_bp[1][ff_bp_index] << 1;
 142     if (ff_bp[2])
 143         v |= ff_bp[2][ff_bp_index] << 2;
 144     bitplane[bitplane_index] = (bitplane[bitplane_index] << 4) | v;
 145 }
 146
 147 static int vaapi_vc1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
 148 {
 149     const VC1Context *v = avctx->priv_data;
 150     const MpegEncContext *s = &v->s;
 151     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
 152     VAPictureParameterBufferVC1 pic_param;
 153     int err;
 154
 155     pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);
 156
 157     pic_param = (VAPictureParameterBufferVC1) {
 158         .forward_reference_picture         = VA_INVALID_ID,
 159         .backward_reference_picture        = VA_INVALID_ID,
 160         .inloop_decoded_picture            = VA_INVALID_ID,
 161         .sequence_fields.bits = {
 162             .pulldown                      = v->broadcast,
 163             .interlace                     = v->interlace,
 164             .tfcntrflag                    = v->tfcntrflag,
 165             .finterpflag                   = v->finterpflag,
 166             .psf                           = v->psf,
 167             .multires                      = v->multires,
 168             .overlap                       = v->overlap,
 169             .syncmarker                    = v->resync_marker,
 170             .rangered                      = v->rangered,
 171             .max_b_frames                  = s->avctx->max_b_frames,
 172             .profile                       = v->profile,
 173         },
 174         .coded_width                       = s->avctx->coded_width,
 175         .coded_height                      = s->avctx->coded_height,
 176         .entrypoint_fields.bits = {
 177             .broken_link                   = v->broken_link,
 178             .closed_entry                  = v->closed_entry,
 179             .panscan_flag                  = v->panscanflag,
 180             .loopfilter                    = s->loop_filter,
 181         },
 182         .conditional_overlap_flag          = v->condover,
 183         .fast_uvmc_flag                    = v->fastuvmc,
 184         .range_mapping_fields.bits = {
 185             .luma_flag                     = v->range_mapy_flag,
 186             .luma                          = v->range_mapy,
 187             .chroma_flag                   = v->range_mapuv_flag,
 188             .chroma                        = v->range_mapuv,
 189         },
 190         .b_picture_fraction                = v->bfraction_lut_index,
 191         .cbp_table                         = v->cbpcy_vlc ? v->cbpcy_vlc - ff_vc1_cbpcy_p_vlc : 0,
 192         .mb_mode_table                     = 0, /* XXX: interlaced frame */
 193         .range_reduction_frame             = v->rangeredfrm,
 194         .rounding_control                  = v->rnd,
 195         .post_processing                   = v->postproc,
 196         .picture_resolution_index          = v->respic,
 197         .luma_scale                        = v->lumscale,
 198         .luma_shift                        = v->lumshift,
 199         .picture_fields.bits = {
 200             .picture_type                  = vc1_get_PTYPE(v),
 201             .frame_coding_mode             = v->fcm,
 202             .top_field_first               = v->tff,
 203             .is_first_field                = v->fcm == 0, /* XXX: interlaced frame */
 204             .intensity_compensation        = v->mv_mode == MV_PMODE_INTENSITY_COMP,
 205         },
 206         .raw_coding.flags = {
 207             .mv_type_mb                    = v->mv_type_is_raw,
 208             .direct_mb                     = v->dmb_is_raw,
 209             .skip_mb                       = v->skip_is_raw,
 210             .field_tx                      = 0, /* XXX: interlaced frame */
 211             .forward_mb                    = 0, /* XXX: interlaced frame */
 212             .ac_pred                       = v->acpred_is_raw,
 213             .overflags                     = v->overflg_is_raw,
 214         },
 215         .bitplane_present.flags = {
 216             .bp_mv_type_mb                 = vc1_has_MVTYPEMB_bitplane(v),
 217             .bp_direct_mb                  = vc1_has_DIRECTMB_bitplane(v),
 218             .bp_skip_mb                    = vc1_has_SKIPMB_bitplane(v),
 219             .bp_field_tx                   = 0, /* XXX: interlaced frame */
 220             .bp_forward_mb                 = 0, /* XXX: interlaced frame */
 221             .bp_ac_pred                    = vc1_has_ACPRED_bitplane(v),
 222             .bp_overflags                  = vc1_has_OVERFLAGS_bitplane(v),
 223         },
 224         .reference_fields.bits = {
 225             .reference_distance_flag       = v->refdist_flag,
 226             .reference_distance            = 0, /* XXX: interlaced frame */
 227             .num_reference_pictures        = 0, /* XXX: interlaced frame */
 228             .reference_field_pic_indicator = 0, /* XXX: interlaced frame */
 229         },
 230         .mv_fields.bits = {
 231             .mv_mode                       = vc1_get_MVMODE(v),
 232             .mv_mode2                      = vc1_get_MVMODE2(v),
 233             .mv_table                      = s->mv_table_index,
 234             .two_mv_block_pattern_table    = 0, /* XXX: interlaced frame */
 235             .four_mv_switch                = 0, /* XXX: interlaced frame */
 236             .four_mv_block_pattern_table   = 0, /* XXX: interlaced frame */
 237             .extended_mv_flag              = v->extended_mv,
 238             .extended_mv_range             = v->mvrange,
 239             .extended_dmv_flag             = v->extended_dmv,
 240             .extended_dmv_range            = 0, /* XXX: interlaced frame */
 241         },
 242         .pic_quantizer_fields.bits = {
 243             .dquant                        = v->dquant,
 244             .quantizer                     = v->quantizer_mode,
 245             .half_qp                       = v->halfpq,
 246             .pic_quantizer_scale           = v->pq,
 247             .pic_quantizer_type            = v->pquantizer,
 248             .dq_frame                      = v->dquantfrm,
 249             .dq_profile                    = v->dqprofile,
 250             .dq_sb_edge                    = v->dqprofile == DQPROFILE_SINGLE_EDGE  ? v->dqsbedge : 0,
 251             .dq_db_edge                    = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0,
 252             .dq_binary_level               = v->dqbilevel,
 253             .alt_pic_quantizer             = v->altpq,
 254         },
 255         .transform_fields.bits = {
 256             .variable_sized_transform_flag = v->vstransform,
 257             .mb_level_transform_type_flag  = v->ttmbf,
 258             .frame_level_transform_type    = vc1_get_TTFRM(v),
 259             .transform_ac_codingset_idx1   = v->c_ac_table_index,
 260             .transform_ac_codingset_idx2   = v->y_ac_table_index,
 261             .intra_transform_dc_table      = v->s.dc_table_index,
 262         },
 263     };
 264
 265     switch (s->pict_type) {
 266     case AV_PICTURE_TYPE_B:
 267         pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
 268         // fall-through
 269     case AV_PICTURE_TYPE_P:
 270         pic_param.forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
 271         break;
 272     }
 273
 274     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 275                                             VAPictureParameterBufferType,
 276                                             &pic_param, sizeof(pic_param));
 277     if (err)
 278         goto fail;
 279
 280     if (pic_param.bitplane_present.value) {
 281         uint8_t *bitplane;
 282         const uint8_t *ff_bp[3];
 283         int x, y, n;
 284         size_t size = (s->mb_width * s->mb_height + 1) / 2;
 285
 286         bitplane = av_mallocz(size);
 287         if (!bitplane) {
 288             err = AVERROR(ENOMEM);
 289             goto fail;
 290         }
 291
 292         switch (s->pict_type) {
 293         case AV_PICTURE_TYPE_P:
 294             ff_bp[0] = pic_param.bitplane_present.flags.bp_direct_mb  ? v->direct_mb_plane    : NULL;
 295             ff_bp[1] = pic_param.bitplane_present.flags.bp_skip_mb    ? s->mbskip_table       : NULL;
 296             ff_bp[2] = pic_param.bitplane_present.flags.bp_mv_type_mb ? v->mv_type_mb_plane   : NULL;
 297             break;
 298         case AV_PICTURE_TYPE_B:
 299             if (!v->bi_type) {
 300                 ff_bp[0] = pic_param.bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
 301                 ff_bp[1] = pic_param.bitplane_present.flags.bp_skip_mb   ? s->mbskip_table    : NULL;
 302                 ff_bp[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */
 303                 break;
 304             }
 305             /* fall-through (BI-type) */
 306         case AV_PICTURE_TYPE_I:
 307             ff_bp[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
 308             ff_bp[1] = pic_param.bitplane_present.flags.bp_ac_pred    ? v->acpred_plane       : NULL;
 309             ff_bp[2] = pic_param.bitplane_present.flags.bp_overflags  ? v->over_flags_plane   : NULL;
 310             break;
 311         default:
 312             ff_bp[0] = NULL;
 313             ff_bp[1] = NULL;
 314             ff_bp[2] = NULL;
 315             break;
 316         }
 317
 318         n = 0;
 319         for (y = 0; y < s->mb_height; y++)
 320             for (x = 0; x < s->mb_width; x++, n++)
 321                 vc1_pack_bitplanes(bitplane, n, ff_bp, x, y, s->mb_stride);
 322         if (n & 1) /* move last nibble to the high order */
 323             bitplane[n/2] <<= 4;
 324
 325         err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 326                                                 VABitPlaneBufferType,
 327                                                 bitplane, size);
 328         av_free(bitplane);
 329         if (err)
 330             goto fail;
 331     }
 332     return 0;
 333
 334 fail:
 335     ff_vaapi_decode_cancel(avctx, pic);
 336     return err;
 337 }
 338
 339 static int vaapi_vc1_end_frame(AVCodecContext *avctx)
 340 {
 341     VC1Context *v = avctx->priv_data;
 342     MpegEncContext *s = &v->s;
 343     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
 344     int ret;
 345
 346     ret = ff_vaapi_decode_issue(avctx, pic);
 347     if (ret < 0)
 348         goto fail;
 349
 350     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
 351
 352 fail:
 353     return ret;
 354 }
 355
 356 static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
 357 {
 358     const VC1Context *v = avctx->priv_data;
 359     const MpegEncContext *s = &v->s;
 360     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
 361     VASliceParameterBufferVC1 slice_param;
 362     int err;
 363
 364     /* Current bit buffer is beyond any marker for VC-1, so skip it */
 365     if (avctx->codec_id == AV_CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
 366         buffer += 4;
 367         size -= 4;
 368     }
 369
 370     slice_param = (VASliceParameterBufferVC1) {
 371         .slice_data_size         = size,
 372         .slice_data_offset       = 0,
 373         .slice_data_flag         = VA_SLICE_DATA_FLAG_ALL,
 374         .macroblock_offset       = get_bits_count(&s->gb),
 375         .slice_vertical_position = s->mb_y,
 376     };
 377
 378     err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
 379                                             &slice_param, sizeof(slice_param),
 380                                             buffer, size);
 381     if (err < 0) {
 382         ff_vaapi_decode_cancel(avctx, pic);
 383         return err;
 384     }
 385
 386     return 0;
 387 }
 388
 389 #if CONFIG_WMV3_VAAPI_HWACCEL
 390 AVHWAccel ff_wmv3_vaapi_hwaccel = {
 391     .name                 = "wmv3_vaapi",
 392     .type                 = AVMEDIA_TYPE_VIDEO,
 393     .id                   = AV_CODEC_ID_WMV3,
 394     .pix_fmt              = AV_PIX_FMT_VAAPI,
 395     .start_frame          = &vaapi_vc1_start_frame,
 396     .end_frame            = &vaapi_vc1_end_frame,
 397     .decode_slice         = &vaapi_vc1_decode_slice,
 398     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
 399     .init                 = &ff_vaapi_decode_init,
 400     .uninit               = &ff_vaapi_decode_uninit,
 401     .priv_data_size       = sizeof(VAAPIDecodeContext),
 402 };
 403 #endif
 404
 405 AVHWAccel ff_vc1_vaapi_hwaccel = {
 406     .name                 = "vc1_vaapi",
 407     .type                 = AVMEDIA_TYPE_VIDEO,
 408     .id                   = AV_CODEC_ID_VC1,
 409     .pix_fmt              = AV_PIX_FMT_VAAPI,
 410     .start_frame          = &vaapi_vc1_start_frame,
 411     .end_frame            = &vaapi_vc1_end_frame,
 412     .decode_slice         = &vaapi_vc1_decode_slice,
 413     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
 414     .init                 = &ff_vaapi_decode_init,
 415     .uninit               = &ff_vaapi_decode_uninit,
 416     .priv_data_size       = sizeof(VAAPIDecodeContext),
 417 };