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ffmpeg / libavcodec / vaapi_vc1.c @ 2912e87a

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/*
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 * VC-1 HW decode acceleration through VA API
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 *
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 * Copyright (C) 2008-2009 Splitted-Desktop Systems
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "vaapi_internal.h"
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#include "vc1.h"
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#include "vc1data.h"
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/** Translate FFmpeg MV modes to VA API */
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static int get_VAMvModeVC1(enum MVModes mv_mode)
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{
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    switch (mv_mode) {
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    case MV_PMODE_1MV_HPEL_BILIN: return VAMvMode1MvHalfPelBilinear;
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    case MV_PMODE_1MV:            return VAMvMode1Mv;
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    case MV_PMODE_1MV_HPEL:       return VAMvMode1MvHalfPel;
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    case MV_PMODE_MIXED_MV:       return VAMvModeMixedMv;
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    case MV_PMODE_INTENSITY_COMP: return VAMvModeIntensityCompensation;
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    }
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    return 0;
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}
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/** Check whether the MVTYPEMB bitplane is present */
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static inline int vc1_has_MVTYPEMB_bitplane(VC1Context *v)
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{
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    if (v->mv_type_is_raw)
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        return 0;
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    return (v->s.pict_type == FF_P_TYPE &&
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            (v->mv_mode == MV_PMODE_MIXED_MV ||
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             (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
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              v->mv_mode2 == MV_PMODE_MIXED_MV)));
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}
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/** Check whether the SKIPMB bitplane is present */
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static inline int vc1_has_SKIPMB_bitplane(VC1Context *v)
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{
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    if (v->skip_is_raw)
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        return 0;
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    return (v->s.pict_type == FF_P_TYPE ||
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            (v->s.pict_type == FF_B_TYPE && !v->bi_type));
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}
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/** Check whether the DIRECTMB bitplane is present */
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static inline int vc1_has_DIRECTMB_bitplane(VC1Context *v)
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{
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    if (v->dmb_is_raw)
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        return 0;
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    return v->s.pict_type == FF_B_TYPE && !v->bi_type;
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}
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/** Check whether the ACPRED bitplane is present */
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static inline int vc1_has_ACPRED_bitplane(VC1Context *v)
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{
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    if (v->acpred_is_raw)
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        return 0;
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    return (v->profile == PROFILE_ADVANCED &&
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            (v->s.pict_type == FF_I_TYPE ||
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             (v->s.pict_type == FF_B_TYPE && v->bi_type)));
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}
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/** Check whether the OVERFLAGS bitplane is present */
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static inline int vc1_has_OVERFLAGS_bitplane(VC1Context *v)
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{
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    if (v->overflg_is_raw)
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        return 0;
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    return (v->profile == PROFILE_ADVANCED &&
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            (v->s.pict_type == FF_I_TYPE ||
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             (v->s.pict_type == FF_B_TYPE && v->bi_type)) &&
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            (v->overlap && v->pq <= 8) &&
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            v->condover == CONDOVER_SELECT);
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}
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/** Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */
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static int vc1_get_PTYPE(VC1Context *v)
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{
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    MpegEncContext * const s = &v->s;
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    switch (s->pict_type) {
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    case FF_I_TYPE: return 0;
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    case FF_P_TYPE: return v->p_frame_skipped ? 4 : 1;
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    case FF_B_TYPE: return v->bi_type         ? 3 : 2;
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    }
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    return 0;
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}
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/** Reconstruct bitstream MVMODE (7.1.1.32) */
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static inline VAMvModeVC1 vc1_get_MVMODE(VC1Context *v)
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{
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    if (v->s.pict_type == FF_P_TYPE ||
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        (v->s.pict_type == FF_B_TYPE && !v->bi_type))
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        return get_VAMvModeVC1(v->mv_mode);
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    return 0;
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}
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/** Reconstruct bitstream MVMODE2 (7.1.1.33) */
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static inline VAMvModeVC1 vc1_get_MVMODE2(VC1Context *v)
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{
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    if (v->s.pict_type == FF_P_TYPE && v->mv_mode == MV_PMODE_INTENSITY_COMP)
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        return get_VAMvModeVC1(v->mv_mode2);
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    return 0;
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}
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/** Pack FFmpeg bitplanes into a VABitPlaneBuffer element */
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static inline void vc1_pack_bitplanes(uint8_t *bitplane, int n, const uint8_t *ff_bp[3], int x, int y, int stride)
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{
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    const int bitplane_index = n / 2;
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    const int ff_bp_index = y * stride + x;
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    uint8_t v = 0;
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    if (ff_bp[0])
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        v = ff_bp[0][ff_bp_index];
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    if (ff_bp[1])
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        v |= ff_bp[1][ff_bp_index] << 1;
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    if (ff_bp[2])
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        v |= ff_bp[2][ff_bp_index] << 2;
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    bitplane[bitplane_index] = (bitplane[bitplane_index] << 4) | v;
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}
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static int vaapi_vc1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
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{
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    VC1Context * const v = avctx->priv_data;
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    MpegEncContext * const s = &v->s;
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    struct vaapi_context * const vactx = avctx->hwaccel_context;
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    VAPictureParameterBufferVC1 *pic_param;
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    av_dlog(avctx, "vaapi_vc1_start_frame()\n");
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    vactx->slice_param_size = sizeof(VASliceParameterBufferVC1);
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    /* Fill in VAPictureParameterBufferVC1 */
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    pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferVC1));
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    if (!pic_param)
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        return -1;
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    pic_param->forward_reference_picture                            = VA_INVALID_ID;
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    pic_param->backward_reference_picture                           = VA_INVALID_ID;
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    pic_param->inloop_decoded_picture                               = VA_INVALID_ID;
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    pic_param->sequence_fields.value                                = 0; /* reset all bits */
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    pic_param->sequence_fields.bits.pulldown                        = v->broadcast;
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    pic_param->sequence_fields.bits.interlace                       = v->interlace;
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    pic_param->sequence_fields.bits.tfcntrflag                      = v->tfcntrflag;
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    pic_param->sequence_fields.bits.finterpflag                     = v->finterpflag;
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    pic_param->sequence_fields.bits.psf                             = v->psf;
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    pic_param->sequence_fields.bits.multires                        = v->multires;
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    pic_param->sequence_fields.bits.overlap                         = v->overlap;
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    pic_param->sequence_fields.bits.syncmarker                      = s->resync_marker;
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    pic_param->sequence_fields.bits.rangered                        = v->rangered;
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    pic_param->sequence_fields.bits.max_b_frames                    = s->avctx->max_b_frames;
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    pic_param->coded_width                                          = s->avctx->coded_width;
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    pic_param->coded_height                                         = s->avctx->coded_height;
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    pic_param->entrypoint_fields.value                              = 0; /* reset all bits */
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    pic_param->entrypoint_fields.bits.broken_link                   = v->broken_link;
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    pic_param->entrypoint_fields.bits.closed_entry                  = v->closed_entry;
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    pic_param->entrypoint_fields.bits.panscan_flag                  = v->panscanflag;
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    pic_param->entrypoint_fields.bits.loopfilter                    = s->loop_filter;
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    pic_param->conditional_overlap_flag                             = v->condover;
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    pic_param->fast_uvmc_flag                                       = v->fastuvmc;
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    pic_param->range_mapping_fields.value                           = 0; /* reset all bits */
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    pic_param->range_mapping_fields.bits.luma_flag                  = v->range_mapy_flag;
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    pic_param->range_mapping_fields.bits.luma                       = v->range_mapy;
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    pic_param->range_mapping_fields.bits.chroma_flag                = v->range_mapuv_flag;
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    pic_param->range_mapping_fields.bits.chroma                     = v->range_mapuv;
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    pic_param->b_picture_fraction                                   = v->bfraction_lut_index;
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    pic_param->cbp_table                                            = v->cbpcy_vlc ? v->cbpcy_vlc - ff_vc1_cbpcy_p_vlc : 0;
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    pic_param->mb_mode_table                                        = 0; /* XXX: interlaced frame */
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    pic_param->range_reduction_frame                                = v->rangeredfrm;
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    pic_param->rounding_control                                     = v->rnd;
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    pic_param->post_processing                                      = v->postproc;
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    pic_param->picture_resolution_index                             = v->respic;
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    pic_param->luma_scale                                           = v->lumscale;
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    pic_param->luma_shift                                           = v->lumshift;
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    pic_param->picture_fields.value                                 = 0; /* reset all bits */
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    pic_param->picture_fields.bits.picture_type                     = vc1_get_PTYPE(v);
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    pic_param->picture_fields.bits.frame_coding_mode                = v->fcm;
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    pic_param->picture_fields.bits.top_field_first                  = v->tff;
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    pic_param->picture_fields.bits.is_first_field                   = v->fcm == 0; /* XXX: interlaced frame */
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    pic_param->picture_fields.bits.intensity_compensation           = v->mv_mode == MV_PMODE_INTENSITY_COMP;
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    pic_param->raw_coding.value                                     = 0; /* reset all bits */
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    pic_param->raw_coding.flags.mv_type_mb                          = v->mv_type_is_raw;
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    pic_param->raw_coding.flags.direct_mb                           = v->dmb_is_raw;
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    pic_param->raw_coding.flags.skip_mb                             = v->skip_is_raw;
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    pic_param->raw_coding.flags.field_tx                            = 0; /* XXX: interlaced frame */
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    pic_param->raw_coding.flags.forward_mb                          = 0; /* XXX: interlaced frame */
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    pic_param->raw_coding.flags.ac_pred                             = v->acpred_is_raw;
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    pic_param->raw_coding.flags.overflags                           = v->overflg_is_raw;
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    pic_param->bitplane_present.value                               = 0; /* reset all bits */
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    pic_param->bitplane_present.flags.bp_mv_type_mb                 = vc1_has_MVTYPEMB_bitplane(v);
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    pic_param->bitplane_present.flags.bp_direct_mb                  = vc1_has_DIRECTMB_bitplane(v);
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    pic_param->bitplane_present.flags.bp_skip_mb                    = vc1_has_SKIPMB_bitplane(v);
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    pic_param->bitplane_present.flags.bp_field_tx                   = 0; /* XXX: interlaced frame */
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    pic_param->bitplane_present.flags.bp_forward_mb                 = 0; /* XXX: interlaced frame */
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    pic_param->bitplane_present.flags.bp_ac_pred                    = vc1_has_ACPRED_bitplane(v);
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    pic_param->bitplane_present.flags.bp_overflags                  = vc1_has_OVERFLAGS_bitplane(v);
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    pic_param->reference_fields.value                               = 0; /* reset all bits */
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    pic_param->reference_fields.bits.reference_distance_flag        = v->refdist_flag;
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    pic_param->reference_fields.bits.reference_distance             = 0; /* XXX: interlaced frame */
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    pic_param->reference_fields.bits.num_reference_pictures         = 0; /* XXX: interlaced frame */
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    pic_param->reference_fields.bits.reference_field_pic_indicator  = 0; /* XXX: interlaced frame */
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    pic_param->mv_fields.value                                      = 0; /* reset all bits */
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    pic_param->mv_fields.bits.mv_mode                               = vc1_get_MVMODE(v);
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    pic_param->mv_fields.bits.mv_mode2                              = vc1_get_MVMODE2(v);
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    pic_param->mv_fields.bits.mv_table                              = s->mv_table_index;
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    pic_param->mv_fields.bits.two_mv_block_pattern_table            = 0; /* XXX: interlaced frame */
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    pic_param->mv_fields.bits.four_mv_switch                        = 0; /* XXX: interlaced frame */
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    pic_param->mv_fields.bits.four_mv_block_pattern_table           = 0; /* XXX: interlaced frame */
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    pic_param->mv_fields.bits.extended_mv_flag                      = v->extended_mv;
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    pic_param->mv_fields.bits.extended_mv_range                     = v->mvrange;
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    pic_param->mv_fields.bits.extended_dmv_flag                     = v->extended_dmv;
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    pic_param->mv_fields.bits.extended_dmv_range                    = 0; /* XXX: interlaced frame */
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    pic_param->pic_quantizer_fields.value                           = 0; /* reset all bits */
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    pic_param->pic_quantizer_fields.bits.dquant                     = v->dquant;
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    pic_param->pic_quantizer_fields.bits.quantizer                  = v->quantizer_mode;
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    pic_param->pic_quantizer_fields.bits.half_qp                    = v->halfpq;
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    pic_param->pic_quantizer_fields.bits.pic_quantizer_scale        = v->pq;
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    pic_param->pic_quantizer_fields.bits.pic_quantizer_type         = v->pquantizer;
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    pic_param->pic_quantizer_fields.bits.dq_frame                   = v->dquantfrm;
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    pic_param->pic_quantizer_fields.bits.dq_profile                 = v->dqprofile;
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    pic_param->pic_quantizer_fields.bits.dq_sb_edge                 = v->dqprofile == DQPROFILE_SINGLE_EDGE  ? v->dqsbedge : 0;
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    pic_param->pic_quantizer_fields.bits.dq_db_edge                 = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0;
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    pic_param->pic_quantizer_fields.bits.dq_binary_level            = v->dqbilevel;
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    pic_param->pic_quantizer_fields.bits.alt_pic_quantizer          = v->altpq;
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    pic_param->transform_fields.value                               = 0; /* reset all bits */
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    pic_param->transform_fields.bits.variable_sized_transform_flag  = v->vstransform;
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    pic_param->transform_fields.bits.mb_level_transform_type_flag   = v->ttmbf;
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    pic_param->transform_fields.bits.frame_level_transform_type     = v->ttfrm;
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    pic_param->transform_fields.bits.transform_ac_codingset_idx1    = v->c_ac_table_index;
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    pic_param->transform_fields.bits.transform_ac_codingset_idx2    = v->y_ac_table_index;
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    pic_param->transform_fields.bits.intra_transform_dc_table       = v->s.dc_table_index;
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    switch (s->pict_type) {
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    case FF_B_TYPE:
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        pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture);
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        // fall-through
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    case FF_P_TYPE:
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        pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture);
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        break;
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    }
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    if (pic_param->bitplane_present.value) {
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        uint8_t *bitplane;
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        const uint8_t *ff_bp[3];
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        int x, y, n;
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        switch (s->pict_type) {
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        case FF_P_TYPE:
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            ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb  ? v->direct_mb_plane    : NULL;
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            ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb    ? s->mbskip_table       : NULL;
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            ff_bp[2] = pic_param->bitplane_present.flags.bp_mv_type_mb ? v->mv_type_mb_plane   : NULL;
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            break;
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        case FF_B_TYPE:
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            if (!v->bi_type) {
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                ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
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                ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb   ? s->mbskip_table    : NULL;
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                ff_bp[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */
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                break;
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            }
271
            /* fall-through (BI-type) */
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        case FF_I_TYPE:
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            ff_bp[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
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            ff_bp[1] = pic_param->bitplane_present.flags.bp_ac_pred    ? v->acpred_plane       : NULL;
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            ff_bp[2] = pic_param->bitplane_present.flags.bp_overflags  ? v->over_flags_plane   : NULL;
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            break;
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        default:
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            ff_bp[0] = NULL;
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            ff_bp[1] = NULL;
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            ff_bp[2] = NULL;
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            break;
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        }
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        bitplane = ff_vaapi_alloc_bitplane(vactx, (s->mb_width * s->mb_height + 1) / 2);
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        if (!bitplane)
286
            return -1;
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        n = 0;
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        for (y = 0; y < s->mb_height; y++)
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            for (x = 0; x < s->mb_width; x++, n++)
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                vc1_pack_bitplanes(bitplane, n, ff_bp, x, y, s->mb_stride);
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        if (n & 1) /* move last nibble to the high order */
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            bitplane[n/2] <<= 4;
294
    }
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    return 0;
296
}
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static int vaapi_vc1_end_frame(AVCodecContext *avctx)
299
{
300
    VC1Context * const v = avctx->priv_data;
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    return ff_vaapi_common_end_frame(&v->s);
303
}
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static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
306
{
307
    VC1Context * const v = avctx->priv_data;
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    MpegEncContext * const s = &v->s;
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    VASliceParameterBufferVC1 *slice_param;
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311
    av_dlog(avctx, "vaapi_vc1_decode_slice(): buffer %p, size %d\n", buffer, size);
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313
    /* Current bit buffer is beyond any marker for VC-1, so skip it */
314
    if (avctx->codec_id == CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
315
        buffer += 4;
316
        size -= 4;
317
    }
318

    
319
    /* Fill in VASliceParameterBufferVC1 */
320
    slice_param = (VASliceParameterBufferVC1 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size);
321
    if (!slice_param)
322
        return -1;
323
    slice_param->macroblock_offset       = get_bits_count(&s->gb);
324
    slice_param->slice_vertical_position = s->mb_y;
325
    return 0;
326
}
327

    
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#if CONFIG_WMV3_VAAPI_HWACCEL
329
AVHWAccel ff_wmv3_vaapi_hwaccel = {
330
    .name           = "wmv3_vaapi",
331
    .type           = AVMEDIA_TYPE_VIDEO,
332
    .id             = CODEC_ID_WMV3,
333
    .pix_fmt        = PIX_FMT_VAAPI_VLD,
334
    .capabilities   = 0,
335
    .start_frame    = vaapi_vc1_start_frame,
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    .end_frame      = vaapi_vc1_end_frame,
337
    .decode_slice   = vaapi_vc1_decode_slice,
338
    .priv_data_size = 0,
339
};
340
#endif
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342
AVHWAccel ff_vc1_vaapi_hwaccel = {
343
    .name           = "vc1_vaapi",
344
    .type           = AVMEDIA_TYPE_VIDEO,
345
    .id             = CODEC_ID_VC1,
346
    .pix_fmt        = PIX_FMT_VAAPI_VLD,
347
    .capabilities   = 0,
348
    .start_frame    = vaapi_vc1_start_frame,
349
    .end_frame      = vaapi_vc1_end_frame,
350
    .decode_slice   = vaapi_vc1_decode_slice,
351
    .priv_data_size = 0,
352
};