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 "hwaccel.h"
  24 #include "internal.h"
  25 #include "vaapi_decode.h"
  26 #include "vc1.h"
  27 #include "vc1data.h"
  28
  29 /** Translate FFmpeg MV modes to VA API */
  30 static int get_VAMvModeVC1(enum MVModes mv_mode)
  31 {
  32     switch (mv_mode) {
  33     case MV_PMODE_1MV_HPEL_BILIN: return VAMvMode1MvHalfPelBilinear;
  34     case MV_PMODE_1MV:            return VAMvMode1Mv;
  35     case MV_PMODE_1MV_HPEL:       return VAMvMode1MvHalfPel;
  36     case MV_PMODE_MIXED_MV:       return VAMvModeMixedMv;
  37     case MV_PMODE_INTENSITY_COMP: return VAMvModeIntensityCompensation;
  38     }
  39     return 0;
  40 }
  41
  42 /** Check whether the MVTYPEMB bitplane is present */
  43 static inline int vc1_has_MVTYPEMB_bitplane(const VC1Context *v)
  44 {
  45     if (v->mv_type_is_raw)
  46         return 0;
  47     return v->s.pict_type == AV_PICTURE_TYPE_P &&
  48            (v->mv_mode == MV_PMODE_MIXED_MV ||
  49             (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
  50              v->mv_mode2 == MV_PMODE_MIXED_MV));
  51 }
  52
  53 /** Check whether the SKIPMB bitplane is present */
  54 static inline int vc1_has_SKIPMB_bitplane(const VC1Context *v)
  55 {
  56     if (v->skip_is_raw)
  57         return 0;
  58     return v->s.pict_type == AV_PICTURE_TYPE_P ||
  59            (v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type);
  60 }
  61
  62 /** Check whether the DIRECTMB bitplane is present */
  63 static inline int vc1_has_DIRECTMB_bitplane(const VC1Context *v)
  64 {
  65     if (v->dmb_is_raw)
  66         return 0;
  67     return v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
  68 }
  69
  70 /** Check whether the ACPRED bitplane is present */
  71 static inline int vc1_has_ACPRED_bitplane(const VC1Context *v)
  72 {
  73     if (v->acpred_is_raw)
  74         return 0;
  75     return v->profile == PROFILE_ADVANCED &&
  76            (v->s.pict_type == AV_PICTURE_TYPE_I ||
  77             (v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type));
  78 }
  79
  80 /** Check whether the OVERFLAGS bitplane is present */
  81 static inline int vc1_has_OVERFLAGS_bitplane(const VC1Context *v)
  82 {
  83     if (v->overflg_is_raw)
  84         return 0;
  85     return v->profile == PROFILE_ADVANCED &&
  86            (v->s.pict_type == AV_PICTURE_TYPE_I ||
  87             (v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type)) &&
  88            (v->overlap && v->pq <= 8) &&
  89            v->condover == CONDOVER_SELECT;
  90 }
  91
  92 /** Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */
  93 static int vc1_get_PTYPE(const VC1Context *v)
  94 {
  95     const MpegEncContext *s = &v->s;
  96     switch (s->pict_type) {
  97     case AV_PICTURE_TYPE_I: return 0;
  98     case AV_PICTURE_TYPE_P: return v->p_frame_skipped ? 4 : 1;
  99     case AV_PICTURE_TYPE_B: return v->bi_type         ? 3 : 2;
 100     }
 101     return 0;
 102 }
 103
 104 /** Reconstruct bitstream MVMODE (7.1.1.32) */
 105 static inline VAMvModeVC1 vc1_get_MVMODE(const VC1Context *v)
 106 {
 107     if (v->s.pict_type == AV_PICTURE_TYPE_P ||
 108         (v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type))
 109         return get_VAMvModeVC1(v->mv_mode);
 110     return 0;
 111 }
 112
 113 /** Reconstruct bitstream MVMODE2 (7.1.1.33) */
 114 static inline VAMvModeVC1 vc1_get_MVMODE2(const VC1Context *v)
 115 {
 116     if (v->s.pict_type == AV_PICTURE_TYPE_P && v->mv_mode == MV_PMODE_INTENSITY_COMP)
 117         return get_VAMvModeVC1(v->mv_mode2);
 118     return 0;
 119 }
 120
 121 /** Reconstruct bitstream TTFRM (7.1.1.41, Table-53) */
 122 static inline int vc1_get_TTFRM(const VC1Context *v)
 123 {
 124     switch (v->ttfrm) {
 125     case TT_8X8: return 0;
 126     case TT_8X4: return 1;
 127     case TT_4X8: return 2;
 128     case TT_4X4: return 3;
 129     }
 130     return 0;
 131 }
 132
 133 /** Pack FFmpeg bitplanes into a VABitPlaneBuffer element */
 134 static inline void vc1_pack_bitplanes(uint8_t *bitplane, int n, const uint8_t *ff_bp[3], int x, int y, int stride)
 135 {
 136     const int bitplane_index = n / 2;
 137     const int ff_bp_index = y * stride + x;
 138     uint8_t v = 0;
 139     if (ff_bp[0])
 140         v = ff_bp[0][ff_bp_index];
 141     if (ff_bp[1])
 142         v |= ff_bp[1][ff_bp_index] << 1;
 143     if (ff_bp[2])
 144         v |= ff_bp[2][ff_bp_index] << 2;
 145     bitplane[bitplane_index] = (bitplane[bitplane_index] << 4) | v;
 146 }
 147
 148 static int vaapi_vc1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
 149 {
 150     const VC1Context *v = avctx->priv_data;
 151     const MpegEncContext *s = &v->s;
 152     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
 153     VAPictureParameterBufferVC1 pic_param;
 154     int err;
 155
 156     pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);
 157
 158     pic_param = (VAPictureParameterBufferVC1) {
 159         .forward_reference_picture         = VA_INVALID_ID,
 160         .backward_reference_picture        = VA_INVALID_ID,
 161         .inloop_decoded_picture            = VA_INVALID_ID,
 162         .sequence_fields.bits = {
 163             .pulldown                      = v->broadcast,
 164             .interlace                     = v->interlace,
 165             .tfcntrflag                    = v->tfcntrflag,
 166             .finterpflag                   = v->finterpflag,
 167             .psf                           = v->psf,
 168             .multires                      = v->multires,
 169             .overlap                       = v->overlap,
 170             .syncmarker                    = v->resync_marker,
 171             .rangered                      = v->rangered,
 172             .max_b_frames                  = s->avctx->max_b_frames,
 173             .profile                       = v->profile,
 174         },
 175         .coded_width                       = s->avctx->coded_width,
 176         .coded_height                      = s->avctx->coded_height,
 177         .entrypoint_fields.bits = {
 178             .broken_link                   = v->broken_link,
 179             .closed_entry                  = v->closed_entry,
 180             .panscan_flag                  = v->panscanflag,
 181             .loopfilter                    = s->loop_filter,
 182         },
 183         .conditional_overlap_flag          = v->condover,
 184         .fast_uvmc_flag                    = v->fastuvmc,
 185         .range_mapping_fields.bits = {
 186             .luma_flag                     = v->range_mapy_flag,
 187             .luma                          = v->range_mapy,
 188             .chroma_flag                   = v->range_mapuv_flag,
 189             .chroma                        = v->range_mapuv,
 190         },
 191         .b_picture_fraction                = v->bfraction_lut_index,
 192         .cbp_table                         = v->cbpcy_vlc ? v->cbpcy_vlc - ff_vc1_cbpcy_p_vlc : 0,
 193         .mb_mode_table                     = 0, /* XXX: interlaced frame */
 194         .range_reduction_frame             = v->rangeredfrm,
 195         .rounding_control                  = v->rnd,
 196         .post_processing                   = v->postproc,
 197         .picture_resolution_index          = v->respic,
 198         .luma_scale                        = v->lumscale,
 199         .luma_shift                        = v->lumshift,
 200         .picture_fields.bits = {
 201             .picture_type                  = vc1_get_PTYPE(v),
 202             .frame_coding_mode             = v->fcm,
 203             .top_field_first               = v->tff,
 204             .is_first_field                = v->fcm == 0, /* XXX: interlaced frame */
 205             .intensity_compensation        = v->mv_mode == MV_PMODE_INTENSITY_COMP,
 206         },
 207         .raw_coding.flags = {
 208             .mv_type_mb                    = v->mv_type_is_raw,
 209             .direct_mb                     = v->dmb_is_raw,
 210             .skip_mb                       = v->skip_is_raw,
 211             .field_tx                      = 0, /* XXX: interlaced frame */
 212             .forward_mb                    = 0, /* XXX: interlaced frame */
 213             .ac_pred                       = v->acpred_is_raw,
 214             .overflags                     = v->overflg_is_raw,
 215         },
 216         .bitplane_present.flags = {
 217             .bp_mv_type_mb                 = vc1_has_MVTYPEMB_bitplane(v),
 218             .bp_direct_mb                  = vc1_has_DIRECTMB_bitplane(v),
 219             .bp_skip_mb                    = vc1_has_SKIPMB_bitplane(v),
 220             .bp_field_tx                   = 0, /* XXX: interlaced frame */
 221             .bp_forward_mb                 = 0, /* XXX: interlaced frame */
 222             .bp_ac_pred                    = vc1_has_ACPRED_bitplane(v),
 223             .bp_overflags                  = vc1_has_OVERFLAGS_bitplane(v),
 224         },
 225         .reference_fields.bits = {
 226             .reference_distance_flag       = v->refdist_flag,
 227             .reference_distance            = 0, /* XXX: interlaced frame */
 228             .num_reference_pictures        = 0, /* XXX: interlaced frame */
 229             .reference_field_pic_indicator = 0, /* XXX: interlaced frame */
 230         },
 231         .mv_fields.bits = {
 232             .mv_mode                       = vc1_get_MVMODE(v),
 233             .mv_mode2                      = vc1_get_MVMODE2(v),
 234             .mv_table                      = s->mv_table_index,
 235             .two_mv_block_pattern_table    = 0, /* XXX: interlaced frame */
 236             .four_mv_switch                = 0, /* XXX: interlaced frame */
 237             .four_mv_block_pattern_table   = 0, /* XXX: interlaced frame */
 238             .extended_mv_flag              = v->extended_mv,
 239             .extended_mv_range             = v->mvrange,
 240             .extended_dmv_flag             = v->extended_dmv,
 241             .extended_dmv_range            = 0, /* XXX: interlaced frame */
 242         },
 243         .pic_quantizer_fields.bits = {
 244             .dquant                        = v->dquant,
 245             .quantizer                     = v->quantizer_mode,
 246             .half_qp                       = v->halfpq,
 247             .pic_quantizer_scale           = v->pq,
 248             .pic_quantizer_type            = v->pquantizer,
 249             .dq_frame                      = v->dquantfrm,
 250             .dq_profile                    = v->dqprofile,
 251             .dq_sb_edge                    = v->dqprofile == DQPROFILE_SINGLE_EDGE  ? v->dqsbedge : 0,
 252             .dq_db_edge                    = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0,
 253             .dq_binary_level               = v->dqbilevel,
 254             .alt_pic_quantizer             = v->altpq,
 255         },
 256         .transform_fields.bits = {
 257             .variable_sized_transform_flag = v->vstransform,
 258             .mb_level_transform_type_flag  = v->ttmbf,
 259             .frame_level_transform_type    = vc1_get_TTFRM(v),
 260             .transform_ac_codingset_idx1   = v->c_ac_table_index,
 261             .transform_ac_codingset_idx2   = v->y_ac_table_index,
 262             .intra_transform_dc_table      = v->s.dc_table_index,
 263         },
 264     };
 265
 266     switch (s->pict_type) {
 267     case AV_PICTURE_TYPE_B:
 268         pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
 269         // fall-through
 270     case AV_PICTURE_TYPE_P:
 271         pic_param.forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
 272         break;
 273     }
 274
 275     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 276                                             VAPictureParameterBufferType,
 277                                             &pic_param, sizeof(pic_param));
 278     if (err)
 279         goto fail;
 280
 281     if (pic_param.bitplane_present.value) {
 282         uint8_t *bitplane;
 283         const uint8_t *ff_bp[3];
 284         int x, y, n;
 285         size_t size = (s->mb_width * s->mb_height + 1) / 2;
 286
 287         bitplane = av_mallocz(size);
 288         if (!bitplane) {
 289             err = AVERROR(ENOMEM);
 290             goto fail;
 291         }
 292
 293         switch (s->pict_type) {
 294         case AV_PICTURE_TYPE_P:
 295             ff_bp[0] = pic_param.bitplane_present.flags.bp_direct_mb  ? v->direct_mb_plane    : NULL;
 296             ff_bp[1] = pic_param.bitplane_present.flags.bp_skip_mb    ? s->mbskip_table       : NULL;
 297             ff_bp[2] = pic_param.bitplane_present.flags.bp_mv_type_mb ? v->mv_type_mb_plane   : NULL;
 298             break;
 299         case AV_PICTURE_TYPE_B:
 300             if (!v->bi_type) {
 301                 ff_bp[0] = pic_param.bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
 302                 ff_bp[1] = pic_param.bitplane_present.flags.bp_skip_mb   ? s->mbskip_table    : NULL;
 303                 ff_bp[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */
 304                 break;
 305             }
 306             /* fall-through (BI-type) */
 307         case AV_PICTURE_TYPE_I:
 308             ff_bp[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
 309             ff_bp[1] = pic_param.bitplane_present.flags.bp_ac_pred    ? v->acpred_plane       : NULL;
 310             ff_bp[2] = pic_param.bitplane_present.flags.bp_overflags  ? v->over_flags_plane   : NULL;
 311             break;
 312         default:
 313             ff_bp[0] = NULL;
 314             ff_bp[1] = NULL;
 315             ff_bp[2] = NULL;
 316             break;
 317         }
 318
 319         n = 0;
 320         for (y = 0; y < s->mb_height; y++)
 321             for (x = 0; x < s->mb_width; x++, n++)
 322                 vc1_pack_bitplanes(bitplane, n, ff_bp, x, y, s->mb_stride);
 323         if (n & 1) /* move last nibble to the high order */
 324             bitplane[n/2] <<= 4;
 325
 326         err = ff_vaapi_decode_make_param_buffer(avctx, pic,
 327                                                 VABitPlaneBufferType,
 328                                                 bitplane, size);
 329         av_free(bitplane);
 330         if (err)
 331             goto fail;
 332     }
 333     return 0;
 334
 335 fail:
 336     ff_vaapi_decode_cancel(avctx, pic);
 337     return err;
 338 }
 339
 340 static int vaapi_vc1_end_frame(AVCodecContext *avctx)
 341 {
 342     VC1Context *v = avctx->priv_data;
 343     MpegEncContext *s = &v->s;
 344     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
 345     int ret;
 346
 347     ret = ff_vaapi_decode_issue(avctx, pic);
 348     if (ret < 0)
 349         goto fail;
 350
 351     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
 352
 353 fail:
 354     return ret;
 355 }
 356
 357 static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
 358 {
 359     const VC1Context *v = avctx->priv_data;
 360     const MpegEncContext *s = &v->s;
 361     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
 362     VASliceParameterBufferVC1 slice_param;
 363     int err;
 364
 365     /* Current bit buffer is beyond any marker for VC-1, so skip it */
 366     if (avctx->codec_id == AV_CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
 367         buffer += 4;
 368         size -= 4;
 369     }
 370
 371     slice_param = (VASliceParameterBufferVC1) {
 372         .slice_data_size         = size,
 373         .slice_data_offset       = 0,
 374         .slice_data_flag         = VA_SLICE_DATA_FLAG_ALL,
 375         .macroblock_offset       = get_bits_count(&s->gb),
 376         .slice_vertical_position = s->mb_y,
 377     };
 378
 379     err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
 380                                             &slice_param, sizeof(slice_param),
 381                                             buffer, size);
 382     if (err < 0) {
 383         ff_vaapi_decode_cancel(avctx, pic);
 384         return err;
 385     }
 386
 387     return 0;
 388 }
 389
 390 #if CONFIG_WMV3_VAAPI_HWACCEL
 391 const AVHWAccel ff_wmv3_vaapi_hwaccel = {
 392     .name                 = "wmv3_vaapi",
 393     .type                 = AVMEDIA_TYPE_VIDEO,
 394     .id                   = AV_CODEC_ID_WMV3,
 395     .pix_fmt              = AV_PIX_FMT_VAAPI,
 396     .start_frame          = &vaapi_vc1_start_frame,
 397     .end_frame            = &vaapi_vc1_end_frame,
 398     .decode_slice         = &vaapi_vc1_decode_slice,
 399     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
 400     .init                 = &ff_vaapi_decode_init,
 401     .uninit               = &ff_vaapi_decode_uninit,
 402     .frame_params         = &ff_vaapi_common_frame_params,
 403     .priv_data_size       = sizeof(VAAPIDecodeContext),
 404     .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
 405 };
 406 #endif
 407
 408 const AVHWAccel ff_vc1_vaapi_hwaccel = {
 409     .name                 = "vc1_vaapi",
 410     .type                 = AVMEDIA_TYPE_VIDEO,
 411     .id                   = AV_CODEC_ID_VC1,
 412     .pix_fmt              = AV_PIX_FMT_VAAPI,
 413     .start_frame          = &vaapi_vc1_start_frame,
 414     .end_frame            = &vaapi_vc1_end_frame,
 415     .decode_slice         = &vaapi_vc1_decode_slice,
 416     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
 417     .init                 = &ff_vaapi_decode_init,
 418     .uninit               = &ff_vaapi_decode_uninit,
 419     .frame_params         = &ff_vaapi_common_frame_params,
 420     .priv_data_size       = sizeof(VAAPIDecodeContext),
 421     .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
 422 };