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   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 "vaapi_internal.h"
  24 #include "internal.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     FFVAContext *vactx = ff_vaapi_get_context(avctx);
 152     VAPictureParameterBufferVC1 *pic_param;
 153
 154     vactx->slice_param_size = sizeof(VASliceParameterBufferVC1);
 155
 156     /* Fill in VAPictureParameterBufferVC1 */
 157     pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferVC1));
 158     if (!pic_param)
 159         return -1;
 160     pic_param->forward_reference_picture                            = VA_INVALID_ID;
 161     pic_param->backward_reference_picture                           = VA_INVALID_ID;
 162     pic_param->inloop_decoded_picture                               = VA_INVALID_ID;
 163     pic_param->sequence_fields.value                                = 0; /* reset all bits */
 164     pic_param->sequence_fields.bits.pulldown                        = v->broadcast;
 165     pic_param->sequence_fields.bits.interlace                       = v->interlace;
 166     pic_param->sequence_fields.bits.tfcntrflag                      = v->tfcntrflag;
 167     pic_param->sequence_fields.bits.finterpflag                     = v->finterpflag;
 168     pic_param->sequence_fields.bits.psf                             = v->psf;
 169     pic_param->sequence_fields.bits.multires                        = v->multires;
 170     pic_param->sequence_fields.bits.overlap                         = v->overlap;
 171     pic_param->sequence_fields.bits.syncmarker                      = v->resync_marker;
 172     pic_param->sequence_fields.bits.rangered                        = v->rangered;
 173     pic_param->sequence_fields.bits.max_b_frames                    = s->avctx->max_b_frames;
 174     pic_param->sequence_fields.bits.profile                         = v->profile;
 175     pic_param->coded_width                                          = s->avctx->coded_width;
 176     pic_param->coded_height                                         = s->avctx->coded_height;
 177     pic_param->entrypoint_fields.value                              = 0; /* reset all bits */
 178     pic_param->entrypoint_fields.bits.broken_link                   = v->broken_link;
 179     pic_param->entrypoint_fields.bits.closed_entry                  = v->closed_entry;
 180     pic_param->entrypoint_fields.bits.panscan_flag                  = v->panscanflag;
 181     pic_param->entrypoint_fields.bits.loopfilter                    = s->loop_filter;
 182     pic_param->conditional_overlap_flag                             = v->condover;
 183     pic_param->fast_uvmc_flag                                       = v->fastuvmc;
 184     pic_param->range_mapping_fields.value                           = 0; /* reset all bits */
 185     pic_param->range_mapping_fields.bits.luma_flag                  = v->range_mapy_flag;
 186     pic_param->range_mapping_fields.bits.luma                       = v->range_mapy;
 187     pic_param->range_mapping_fields.bits.chroma_flag                = v->range_mapuv_flag;
 188     pic_param->range_mapping_fields.bits.chroma                     = v->range_mapuv;
 189     pic_param->b_picture_fraction                                   = v->bfraction_lut_index;
 190     pic_param->cbp_table                                            = v->cbpcy_vlc ? v->cbpcy_vlc - ff_vc1_cbpcy_p_vlc : 0;
 191     pic_param->mb_mode_table                                        = 0; /* XXX: interlaced frame */
 192     pic_param->range_reduction_frame                                = v->rangeredfrm;
 193     pic_param->rounding_control                                     = v->rnd;
 194     pic_param->post_processing                                      = v->postproc;
 195     pic_param->picture_resolution_index                             = v->respic;
 196     pic_param->luma_scale                                           = v->lumscale;
 197     pic_param->luma_shift                                           = v->lumshift;
 198     pic_param->picture_fields.value                                 = 0; /* reset all bits */
 199     pic_param->picture_fields.bits.picture_type                     = vc1_get_PTYPE(v);
 200     pic_param->picture_fields.bits.frame_coding_mode                = v->fcm;
 201     pic_param->picture_fields.bits.top_field_first                  = v->tff;
 202     pic_param->picture_fields.bits.is_first_field                   = v->fcm == 0; /* XXX: interlaced frame */
 203     pic_param->picture_fields.bits.intensity_compensation           = v->mv_mode == MV_PMODE_INTENSITY_COMP;
 204     pic_param->raw_coding.value                                     = 0; /* reset all bits */
 205     pic_param->raw_coding.flags.mv_type_mb                          = v->mv_type_is_raw;
 206     pic_param->raw_coding.flags.direct_mb                           = v->dmb_is_raw;
 207     pic_param->raw_coding.flags.skip_mb                             = v->skip_is_raw;
 208     pic_param->raw_coding.flags.field_tx                            = 0; /* XXX: interlaced frame */
 209     pic_param->raw_coding.flags.forward_mb                          = 0; /* XXX: interlaced frame */
 210     pic_param->raw_coding.flags.ac_pred                             = v->acpred_is_raw;
 211     pic_param->raw_coding.flags.overflags                           = v->overflg_is_raw;
 212     pic_param->bitplane_present.value                               = 0; /* reset all bits */
 213     pic_param->bitplane_present.flags.bp_mv_type_mb                 = vc1_has_MVTYPEMB_bitplane(v);
 214     pic_param->bitplane_present.flags.bp_direct_mb                  = vc1_has_DIRECTMB_bitplane(v);
 215     pic_param->bitplane_present.flags.bp_skip_mb                    = vc1_has_SKIPMB_bitplane(v);
 216     pic_param->bitplane_present.flags.bp_field_tx                   = 0; /* XXX: interlaced frame */
 217     pic_param->bitplane_present.flags.bp_forward_mb                 = 0; /* XXX: interlaced frame */
 218     pic_param->bitplane_present.flags.bp_ac_pred                    = vc1_has_ACPRED_bitplane(v);
 219     pic_param->bitplane_present.flags.bp_overflags                  = vc1_has_OVERFLAGS_bitplane(v);
 220     pic_param->reference_fields.value                               = 0; /* reset all bits */
 221     pic_param->reference_fields.bits.reference_distance_flag        = v->refdist_flag;
 222     pic_param->reference_fields.bits.reference_distance             = 0; /* XXX: interlaced frame */
 223     pic_param->reference_fields.bits.num_reference_pictures         = 0; /* XXX: interlaced frame */
 224     pic_param->reference_fields.bits.reference_field_pic_indicator  = 0; /* XXX: interlaced frame */
 225     pic_param->mv_fields.value                                      = 0; /* reset all bits */
 226     pic_param->mv_fields.bits.mv_mode                               = vc1_get_MVMODE(v);
 227     pic_param->mv_fields.bits.mv_mode2                              = vc1_get_MVMODE2(v);
 228     pic_param->mv_fields.bits.mv_table                              = s->mv_table_index;
 229     pic_param->mv_fields.bits.two_mv_block_pattern_table            = 0; /* XXX: interlaced frame */
 230     pic_param->mv_fields.bits.four_mv_switch                        = 0; /* XXX: interlaced frame */
 231     pic_param->mv_fields.bits.four_mv_block_pattern_table           = 0; /* XXX: interlaced frame */
 232     pic_param->mv_fields.bits.extended_mv_flag                      = v->extended_mv;
 233     pic_param->mv_fields.bits.extended_mv_range                     = v->mvrange;
 234     pic_param->mv_fields.bits.extended_dmv_flag                     = v->extended_dmv;
 235     pic_param->mv_fields.bits.extended_dmv_range                    = 0; /* XXX: interlaced frame */
 236     pic_param->pic_quantizer_fields.value                           = 0; /* reset all bits */
 237     pic_param->pic_quantizer_fields.bits.dquant                     = v->dquant;
 238     pic_param->pic_quantizer_fields.bits.quantizer                  = v->quantizer_mode;
 239     pic_param->pic_quantizer_fields.bits.half_qp                    = v->halfpq;
 240     pic_param->pic_quantizer_fields.bits.pic_quantizer_scale        = v->pq;
 241     pic_param->pic_quantizer_fields.bits.pic_quantizer_type         = v->pquantizer;
 242     pic_param->pic_quantizer_fields.bits.dq_frame                   = v->dquantfrm;
 243     pic_param->pic_quantizer_fields.bits.dq_profile                 = v->dqprofile;
 244     pic_param->pic_quantizer_fields.bits.dq_sb_edge                 = v->dqprofile == DQPROFILE_SINGLE_EDGE  ? v->dqsbedge : 0;
 245     pic_param->pic_quantizer_fields.bits.dq_db_edge                 = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0;
 246     pic_param->pic_quantizer_fields.bits.dq_binary_level            = v->dqbilevel;
 247     pic_param->pic_quantizer_fields.bits.alt_pic_quantizer          = v->altpq;
 248     pic_param->transform_fields.value                               = 0; /* reset all bits */
 249     pic_param->transform_fields.bits.variable_sized_transform_flag  = v->vstransform;
 250     pic_param->transform_fields.bits.mb_level_transform_type_flag   = v->ttmbf;
 251     pic_param->transform_fields.bits.frame_level_transform_type     = vc1_get_TTFRM(v);
 252     pic_param->transform_fields.bits.transform_ac_codingset_idx1    = v->c_ac_table_index;
 253     pic_param->transform_fields.bits.transform_ac_codingset_idx2    = v->y_ac_table_index;
 254     pic_param->transform_fields.bits.intra_transform_dc_table       = v->s.dc_table_index;
 255
 256     switch (s->pict_type) {
 257     case AV_PICTURE_TYPE_B:
 258         pic_param->backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
 259         // fall-through
 260     case AV_PICTURE_TYPE_P:
 261         pic_param->forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
 262         break;
 263     }
 264
 265     if (pic_param->bitplane_present.value) {
 266         uint8_t *bitplane;
 267         const uint8_t *ff_bp[3];
 268         int x, y, n;
 269
 270         switch (s->pict_type) {
 271         case AV_PICTURE_TYPE_P:
 272             ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb  ? v->direct_mb_plane    : NULL;
 273             ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb    ? s->mbskip_table       : NULL;
 274             ff_bp[2] = pic_param->bitplane_present.flags.bp_mv_type_mb ? v->mv_type_mb_plane   : NULL;
 275             break;
 276         case AV_PICTURE_TYPE_B:
 277             if (!v->bi_type) {
 278                 ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
 279                 ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb   ? s->mbskip_table    : NULL;
 280                 ff_bp[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */
 281                 break;
 282             }
 283             /* fall-through (BI-type) */
 284         case AV_PICTURE_TYPE_I:
 285             ff_bp[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
 286             ff_bp[1] = pic_param->bitplane_present.flags.bp_ac_pred    ? v->acpred_plane       : NULL;
 287             ff_bp[2] = pic_param->bitplane_present.flags.bp_overflags  ? v->over_flags_plane   : NULL;
 288             break;
 289         default:
 290             ff_bp[0] = NULL;
 291             ff_bp[1] = NULL;
 292             ff_bp[2] = NULL;
 293             break;
 294         }
 295
 296         bitplane = ff_vaapi_alloc_bitplane(vactx, (s->mb_width * s->mb_height + 1) / 2);
 297         if (!bitplane)
 298             return -1;
 299
 300         n = 0;
 301         for (y = 0; y < s->mb_height; y++)
 302             for (x = 0; x < s->mb_width; x++, n++)
 303                 vc1_pack_bitplanes(bitplane, n, ff_bp, x, y, s->mb_stride);
 304         if (n & 1) /* move last nibble to the high order */
 305             bitplane[n/2] <<= 4;
 306     }
 307     return 0;
 308 }
 309
 310 static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
 311 {
 312     const VC1Context *v = avctx->priv_data;
 313     const MpegEncContext *s = &v->s;
 314     FFVAContext *vactx = ff_vaapi_get_context(avctx);
 315     VASliceParameterBufferVC1 *slice_param;
 316
 317     /* Current bit buffer is beyond any marker for VC-1, so skip it */
 318     if (avctx->codec_id == AV_CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
 319         buffer += 4;
 320         size -= 4;
 321     }
 322
 323     /* Fill in VASliceParameterBufferVC1 */
 324     slice_param = (VASliceParameterBufferVC1 *)ff_vaapi_alloc_slice(vactx, buffer, size);
 325     if (!slice_param)
 326         return -1;
 327     slice_param->macroblock_offset       = get_bits_count(&s->gb);
 328     slice_param->slice_vertical_position = s->mb_y;
 329     return 0;
 330 }
 331
 332 #if CONFIG_WMV3_VAAPI_HWACCEL
 333 AVHWAccel ff_wmv3_vaapi_hwaccel = {
 334     .name           = "wmv3_vaapi",
 335     .type           = AVMEDIA_TYPE_VIDEO,
 336     .id             = AV_CODEC_ID_WMV3,
 337     .pix_fmt        = AV_PIX_FMT_VAAPI,
 338     .start_frame    = vaapi_vc1_start_frame,
 339     .end_frame      = ff_vaapi_mpeg_end_frame,
 340     .decode_slice   = vaapi_vc1_decode_slice,
 341     .init           = ff_vaapi_context_init,
 342     .uninit         = ff_vaapi_context_fini,
 343     .priv_data_size = sizeof(FFVAContext),
 344 };
 345 #endif
 346
 347 AVHWAccel ff_vc1_vaapi_hwaccel = {
 348     .name           = "vc1_vaapi",
 349     .type           = AVMEDIA_TYPE_VIDEO,
 350     .id             = AV_CODEC_ID_VC1,
 351     .pix_fmt        = AV_PIX_FMT_VAAPI,
 352     .start_frame    = vaapi_vc1_start_frame,
 353     .end_frame      = ff_vaapi_mpeg_end_frame,
 354     .decode_slice   = vaapi_vc1_decode_slice,
 355     .init           = ff_vaapi_context_init,
 356     .uninit         = ff_vaapi_context_fini,
 357     .priv_data_size = sizeof(FFVAContext),
 358 };