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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 "vc1.h"
  25. #include "vc1data.h"
  26.  
  27. /** Translate FFmpeg 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 FFmpeg 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                      = s->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);
  262.         // fall-through
  263.     case AV_PICTURE_TYPE_P:
  264.         pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture);
  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. };
  357.