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