Function vaapi_mpeg4_start_frame

libavcodec/vaapi_mpeg4.c:41–115

}

static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
{
    MpegEncContext * const s = avctx->priv_data;
    struct vaapi_context * const vactx = avctx->hwaccel_context;
    VAPictureParameterBufferMPEG4 *pic_param;
    VAIQMatrixBufferMPEG4 *iq_matrix;
    int i;

    dprintf(avctx, "vaapi_mpeg4_start_frame()\n");

    vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4);

    /* Fill in VAPictureParameterBufferMPEG4 */
    pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4));
    if (!pic_param)
        return -1;
    pic_param->vop_width                                = s->width;
    pic_param->vop_height                               = s->height;
    pic_param->forward_reference_picture                = VA_INVALID_ID;
    pic_param->backward_reference_picture               = VA_INVALID_ID;
    pic_param->vol_fields.value                         = 0; /* reset all bits */
    pic_param->vol_fields.bits.short_video_header       = avctx->codec->id == CODEC_ID_H263;
    pic_param->vol_fields.bits.chroma_format            = CHROMA_420;
    pic_param->vol_fields.bits.interlaced               = !s->progressive_sequence;
    pic_param->vol_fields.bits.obmc_disable             = 1;
    pic_param->vol_fields.bits.sprite_enable            = s->vol_sprite_usage;
    pic_param->vol_fields.bits.sprite_warping_accuracy  = s->sprite_warping_accuracy;
    pic_param->vol_fields.bits.quant_type               = s->mpeg_quant;
    pic_param->vol_fields.bits.quarter_sample           = s->quarter_sample;
    pic_param->vol_fields.bits.data_partitioned         = s->data_partitioning;
    pic_param->vol_fields.bits.reversible_vlc           = s->rvlc;
    pic_param->vol_fields.bits.resync_marker_disable    = !s->resync_marker;
    pic_param->no_of_sprite_warping_points              = s->num_sprite_warping_points;
    for (i = 0; i < s->num_sprite_warping_points && i < 3; i++) {
        pic_param->sprite_trajectory_du[i]              = s->sprite_traj[i][0];
        pic_param->sprite_trajectory_dv[i]              = s->sprite_traj[i][1];
    }
    pic_param->quant_precision                          = s->quant_precision;
    pic_param->vop_fields.value                         = 0; /* reset all bits */
    pic_param->vop_fields.bits.vop_coding_type          = s->pict_type - FF_I_TYPE;
    pic_param->vop_fields.bits.backward_reference_vop_coding_type = s->pict_type == FF_B_TYPE ? s->next_picture.pict_type - FF_I_TYPE : 0;
    pic_param->vop_fields.bits.vop_rounding_type        = s->no_rounding;
    pic_param->vop_fields.bits.intra_dc_vlc_thr         = mpeg4_get_intra_dc_vlc_thr(s);
    pic_param->vop_fields.bits.top_field_first          = s->top_field_first;
    pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan;
    pic_param->vop_fcode_forward                        = s->f_code;
    pic_param->vop_fcode_backward                       = s->b_code;
    pic_param->vop_time_increment_resolution            = avctx->time_base.den;
    pic_param->num_macroblocks_in_gob                   = s->mb_width * ff_h263_get_gob_height(s);
    pic_param->num_gobs_in_vop                          = (s->mb_width * s->mb_height) / pic_param->num_macroblocks_in_gob;
    pic_param->TRB                                      = s->pb_time;
    pic_param->TRD                                      = s->pp_time;

    if (s->pict_type == FF_B_TYPE)
        pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture);
    if (s->pict_type != FF_I_TYPE)
        pic_param->forward_reference_picture  = ff_vaapi_get_surface_id(&s->last_picture);