Function h261_encode_init

libavcodec/h261enc.c:353–384

}

static av_cold int h261_encode_init(AVCodecContext *avctx)
{
    static AVOnce init_static_once = AV_ONCE_INIT;
    H261EncContext *const h = avctx->priv_data;
    MPVEncContext *const s = &h->s.s;

    if (avctx->width == 176 && avctx->height == 144) {
        h->format = H261_QCIF;
    } else if (avctx->width == 352 && avctx->height == 288) {
        h->format = H261_CIF;
    } else {
        av_log(avctx, AV_LOG_ERROR,
                "The specified picture size of %dx%d is not valid for the "
                "H.261 codec.\nValid sizes are 176x144, 352x288\n",
               avctx->width, avctx->height);
        return AVERROR(EINVAL);
    }
    h->s.encode_picture_header = h261_encode_picture_header;
    s->encode_mb               = h261_encode_mb;

    s->min_qcoeff       = -127;
    s->max_qcoeff       = 127;
    s->ac_esc_length    = H261_ESC_LEN;

    s->me.mv_penalty = mv_penalty;

    s->intra_ac_vlc_length      = s->inter_ac_vlc_length      = uni_h261_rl_len;
    s->intra_ac_vlc_last_length = s->inter_ac_vlc_last_length = uni_h261_rl_len_last;
    ff_thread_once(&init_static_once, h261_encode_init_static);

    return ff_mpv_encode_init(avctx);
}

const FFCodec ff_h261_encoder = {
    .p.name         = "h261",