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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(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(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(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(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(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(VC1Context *v)
  93. {
  94.     MpegEncContext * const 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(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(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(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.     VC1Context * const v = avctx->priv_data;
  150.     MpegEncContext * const s = &v->s;
  151.     FFVAContext * const vactx = ff_vaapi_get_context(avctx);
  152.     VAPictureParameterBufferVC1 *pic_param;
  153.  
  154.     ff_dlog(avctx, "vaapi_vc1_start_frame()\n");
  155.  
  156.     vactx->slice_param_size = sizeof(VASliceParameterBufferVC1);
  157.  
  158.     /* Fill in VAPictureParameterBufferVC1 */
  159.     pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferVC1));
  160.     if (!pic_param)
  161.         return -1;
  162.     pic_param->forward_reference_picture                            = VA_INVALID_ID;
  163.     pic_param->backward_reference_picture                           = VA_INVALID_ID;
  164.     pic_param->inloop_decoded_picture                               = VA_INVALID_ID;
  165.     pic_param->sequence_fields.value                                = 0; /* reset all bits */
  166.     pic_param->sequence_fields.bits.pulldown                        = v->broadcast;
  167.     pic_param->sequence_fields.bits.interlace                       = v->interlace;
  168.     pic_param->sequence_fields.bits.tfcntrflag                      = v->tfcntrflag;
  169.     pic_param->sequence_fields.bits.finterpflag                     = v->finterpflag;
  170.     pic_param->sequence_fields.bits.psf                             = v->psf;
  171.     pic_param->sequence_fields.bits.multires                        = v->multires;
  172.     pic_param->sequence_fields.bits.overlap                         = v->overlap;
  173.     pic_param->sequence_fields.bits.syncmarker                      = v->resync_marker;
  174.     pic_param->sequence_fields.bits.rangered                        = v->rangered;
  175.     pic_param->sequence_fields.bits.max_b_frames                    = s->avctx->max_b_frames;
  176. #if VA_CHECK_VERSION(0,32,0)
  177.     pic_param->sequence_fields.bits.profile                         = v->profile;
  178. #endif
  179.     pic_param->coded_width                                          = s->avctx->coded_width;
  180.     pic_param->coded_height                                         = s->avctx->coded_height;
  181.     pic_param->entrypoint_fields.value                              = 0; /* reset all bits */
  182.     pic_param->entrypoint_fields.bits.broken_link                   = v->broken_link;
  183.     pic_param->entrypoint_fields.bits.closed_entry                  = v->closed_entry;
  184.     pic_param->entrypoint_fields.bits.panscan_flag                  = v->panscanflag;
  185.     pic_param->entrypoint_fields.bits.loopfilter                    = s->loop_filter;
  186.     pic_param->conditional_overlap_flag                             = v->condover;
  187.     pic_param->fast_uvmc_flag                                       = v->fastuvmc;
  188.     pic_param->range_mapping_fields.value                           = 0; /* reset all bits */
  189.     pic_param->range_mapping_fields.bits.luma_flag                  = v->range_mapy_flag;
  190.     pic_param->range_mapping_fields.bits.luma                       = v->range_mapy;
  191.     pic_param->range_mapping_fields.bits.chroma_flag                = v->range_mapuv_flag;
  192.     pic_param->range_mapping_fields.bits.chroma                     = v->range_mapuv;
  193.     pic_param->b_picture_fraction                                   = v->bfraction_lut_index;
  194.     pic_param->cbp_table                                            = v->cbpcy_vlc ? v->cbpcy_vlc - ff_vc1_cbpcy_p_vlc : 0;
  195.     pic_param->mb_mode_table                                        = 0; /* XXX: interlaced frame */
  196.     pic_param->range_reduction_frame                                = v->rangeredfrm;
  197.     pic_param->rounding_control                                     = v->rnd;
  198.     pic_param->post_processing                                      = v->postproc;
  199.     pic_param->picture_resolution_index                             = v->respic;
  200.     pic_param->luma_scale                                           = v->lumscale;
  201.     pic_param->luma_shift                                           = v->lumshift;
  202.     pic_param->picture_fields.value                                 = 0; /* reset all bits */
  203.     pic_param->picture_fields.bits.picture_type                     = vc1_get_PTYPE(v);
  204.     pic_param->picture_fields.bits.frame_coding_mode                = v->fcm;
  205.     pic_param->picture_fields.bits.top_field_first                  = v->tff;
  206.     pic_param->picture_fields.bits.is_first_field                   = v->fcm == 0; /* XXX: interlaced frame */
  207.     pic_param->picture_fields.bits.intensity_compensation           = v->mv_mode == MV_PMODE_INTENSITY_COMP;
  208.     pic_param->raw_coding.value                                     = 0; /* reset all bits */
  209.     pic_param->raw_coding.flags.mv_type_mb                          = v->mv_type_is_raw;
  210.     pic_param->raw_coding.flags.direct_mb                           = v->dmb_is_raw;
  211.     pic_param->raw_coding.flags.skip_mb                             = v->skip_is_raw;
  212.     pic_param->raw_coding.flags.field_tx                            = 0; /* XXX: interlaced frame */
  213.     pic_param->raw_coding.flags.forward_mb                          = 0; /* XXX: interlaced frame */
  214.     pic_param->raw_coding.flags.ac_pred                             = v->acpred_is_raw;
  215.     pic_param->raw_coding.flags.overflags                           = v->overflg_is_raw;
  216.     pic_param->bitplane_present.value                               = 0; /* reset all bits */
  217.     pic_param->bitplane_present.flags.bp_mv_type_mb                 = vc1_has_MVTYPEMB_bitplane(v);
  218.     pic_param->bitplane_present.flags.bp_direct_mb                  = vc1_has_DIRECTMB_bitplane(v);
  219.     pic_param->bitplane_present.flags.bp_skip_mb                    = vc1_has_SKIPMB_bitplane(v);
  220.     pic_param->bitplane_present.flags.bp_field_tx                   = 0; /* XXX: interlaced frame */
  221.     pic_param->bitplane_present.flags.bp_forward_mb                 = 0; /* XXX: interlaced frame */
  222.     pic_param->bitplane_present.flags.bp_ac_pred                    = vc1_has_ACPRED_bitplane(v);
  223.     pic_param->bitplane_present.flags.bp_overflags                  = vc1_has_OVERFLAGS_bitplane(v);
  224.     pic_param->reference_fields.value                               = 0; /* reset all bits */
  225.     pic_param->reference_fields.bits.reference_distance_flag        = v->refdist_flag;
  226.     pic_param->reference_fields.bits.reference_distance             = 0; /* XXX: interlaced frame */
  227.     pic_param->reference_fields.bits.num_reference_pictures         = 0; /* XXX: interlaced frame */
  228.     pic_param->reference_fields.bits.reference_field_pic_indicator  = 0; /* XXX: interlaced frame */
  229.     pic_param->mv_fields.value                                      = 0; /* reset all bits */
  230.     pic_param->mv_fields.bits.mv_mode                               = vc1_get_MVMODE(v);
  231.     pic_param->mv_fields.bits.mv_mode2                              = vc1_get_MVMODE2(v);
  232.     pic_param->mv_fields.bits.mv_table                              = s->mv_table_index;
  233.     pic_param->mv_fields.bits.two_mv_block_pattern_table            = 0; /* XXX: interlaced frame */
  234.     pic_param->mv_fields.bits.four_mv_switch                        = 0; /* XXX: interlaced frame */
  235.     pic_param->mv_fields.bits.four_mv_block_pattern_table           = 0; /* XXX: interlaced frame */
  236.     pic_param->mv_fields.bits.extended_mv_flag                      = v->extended_mv;
  237.     pic_param->mv_fields.bits.extended_mv_range                     = v->mvrange;
  238.     pic_param->mv_fields.bits.extended_dmv_flag                     = v->extended_dmv;
  239.     pic_param->mv_fields.bits.extended_dmv_range                    = 0; /* XXX: interlaced frame */
  240.     pic_param->pic_quantizer_fields.value                           = 0; /* reset all bits */
  241.     pic_param->pic_quantizer_fields.bits.dquant                     = v->dquant;
  242.     pic_param->pic_quantizer_fields.bits.quantizer                  = v->quantizer_mode;
  243.     pic_param->pic_quantizer_fields.bits.half_qp                    = v->halfpq;
  244.     pic_param->pic_quantizer_fields.bits.pic_quantizer_scale        = v->pq;
  245.     pic_param->pic_quantizer_fields.bits.pic_quantizer_type         = v->pquantizer;
  246.     pic_param->pic_quantizer_fields.bits.dq_frame                   = v->dquantfrm;
  247.     pic_param->pic_quantizer_fields.bits.dq_profile                 = v->dqprofile;
  248.     pic_param->pic_quantizer_fields.bits.dq_sb_edge                 = v->dqprofile == DQPROFILE_SINGLE_EDGE  ? v->dqsbedge : 0;
  249.     pic_param->pic_quantizer_fields.bits.dq_db_edge                 = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0;
  250.     pic_param->pic_quantizer_fields.bits.dq_binary_level            = v->dqbilevel;
  251.     pic_param->pic_quantizer_fields.bits.alt_pic_quantizer          = v->altpq;
  252.     pic_param->transform_fields.value                               = 0; /* reset all bits */
  253.     pic_param->transform_fields.bits.variable_sized_transform_flag  = v->vstransform;
  254.     pic_param->transform_fields.bits.mb_level_transform_type_flag   = v->ttmbf;
  255.     pic_param->transform_fields.bits.frame_level_transform_type     = vc1_get_TTFRM(v);
  256.     pic_param->transform_fields.bits.transform_ac_codingset_idx1    = v->c_ac_table_index;
  257.     pic_param->transform_fields.bits.transform_ac_codingset_idx2    = v->y_ac_table_index;
  258.     pic_param->transform_fields.bits.intra_transform_dc_table       = v->s.dc_table_index;
  259.  
  260.     switch (s->pict_type) {
  261.     case AV_PICTURE_TYPE_B:
  262.         pic_param->backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
  263.         // fall-through
  264.     case AV_PICTURE_TYPE_P:
  265.         pic_param->forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
  266.         break;
  267.     }
  268.  
  269.     if (pic_param->bitplane_present.value) {
  270.         uint8_t *bitplane;
  271.         const uint8_t *ff_bp[3];
  272.         int x, y, n;
  273.  
  274.         switch (s->pict_type) {
  275.         case AV_PICTURE_TYPE_P:
  276.             ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb  ? v->direct_mb_plane    : NULL;
  277.             ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb    ? s->mbskip_table       : NULL;
  278.             ff_bp[2] = pic_param->bitplane_present.flags.bp_mv_type_mb ? v->mv_type_mb_plane   : NULL;
  279.             break;
  280.         case AV_PICTURE_TYPE_B:
  281.             if (!v->bi_type) {
  282.                 ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
  283.                 ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb   ? s->mbskip_table    : NULL;
  284.                 ff_bp[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */
  285.                 break;
  286.             }
  287.             /* fall-through (BI-type) */
  288.         case AV_PICTURE_TYPE_I:
  289.             ff_bp[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
  290.             ff_bp[1] = pic_param->bitplane_present.flags.bp_ac_pred    ? v->acpred_plane       : NULL;
  291.             ff_bp[2] = pic_param->bitplane_present.flags.bp_overflags  ? v->over_flags_plane   : NULL;
  292.             break;
  293.         default:
  294.             ff_bp[0] = NULL;
  295.             ff_bp[1] = NULL;
  296.             ff_bp[2] = NULL;
  297.             break;
  298.         }
  299.  
  300.         bitplane = ff_vaapi_alloc_bitplane(vactx, (s->mb_width * s->mb_height + 1) / 2);
  301.         if (!bitplane)
  302.             return -1;
  303.  
  304.         n = 0;
  305.         for (y = 0; y < s->mb_height; y++)
  306.             for (x = 0; x < s->mb_width; x++, n++)
  307.                 vc1_pack_bitplanes(bitplane, n, ff_bp, x, y, s->mb_stride);
  308.         if (n & 1) /* move last nibble to the high order */
  309.             bitplane[n/2] <<= 4;
  310.     }
  311.     return 0;
  312. }
  313.  
  314. static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
  315. {
  316.     VC1Context * const v = avctx->priv_data;
  317.     MpegEncContext * const s = &v->s;
  318.     FFVAContext * const vactx = ff_vaapi_get_context(avctx);
  319.     VASliceParameterBufferVC1 *slice_param;
  320.  
  321.     ff_dlog(avctx, "vaapi_vc1_decode_slice(): buffer %p, size %d\n", buffer, size);
  322.  
  323.     /* Current bit buffer is beyond any marker for VC-1, so skip it */
  324.     if (avctx->codec_id == AV_CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
  325.         buffer += 4;
  326.         size -= 4;
  327.     }
  328.  
  329.     /* Fill in VASliceParameterBufferVC1 */
  330.     slice_param = (VASliceParameterBufferVC1 *)ff_vaapi_alloc_slice(vactx, buffer, size);
  331.     if (!slice_param)
  332.         return -1;
  333.     slice_param->macroblock_offset       = get_bits_count(&s->gb);
  334.     slice_param->slice_vertical_position = s->mb_y;
  335.     return 0;
  336. }
  337.  
  338. #if CONFIG_WMV3_VAAPI_HWACCEL
  339. AVHWAccel ff_wmv3_vaapi_hwaccel = {
  340.     .name           = "wmv3_vaapi",
  341.     .type           = AVMEDIA_TYPE_VIDEO,
  342.     .id             = AV_CODEC_ID_WMV3,
  343.     .pix_fmt        = AV_PIX_FMT_VAAPI,
  344.     .start_frame    = vaapi_vc1_start_frame,
  345.     .end_frame      = ff_vaapi_mpeg_end_frame,
  346.     .decode_slice   = vaapi_vc1_decode_slice,
  347.     .init           = ff_vaapi_context_init,
  348.     .uninit         = ff_vaapi_context_fini,
  349.     .priv_data_size = sizeof(FFVAContext),
  350. };
  351. #endif
  352.  
  353. AVHWAccel ff_vc1_vaapi_hwaccel = {
  354.     .name           = "vc1_vaapi",
  355.     .type           = AVMEDIA_TYPE_VIDEO,
  356.     .id             = AV_CODEC_ID_VC1,
  357.     .pix_fmt        = AV_PIX_FMT_VAAPI,
  358.     .start_frame    = vaapi_vc1_start_frame,
  359.     .end_frame      = ff_vaapi_mpeg_end_frame,
  360.     .decode_slice   = vaapi_vc1_decode_slice,
  361.     .init           = ff_vaapi_context_init,
  362.     .uninit         = ff_vaapi_context_fini,
  363.     .priv_data_size = sizeof(FFVAContext),
  364. };
  365.