Function decavsubWork

libhb/decavsub.c:308–696

}

int decavsubWork( hb_decavsub_context_t * ctx,
                  hb_buffer_t ** buf_in,
                  hb_buffer_t ** buf_out )
{
    hb_buffer_t * in = *buf_in;
    hb_buffer_settings_t in_s = in->s;

    if (in_s.flags & HB_BUF_FLAG_EOF)
    {
        /* EOF on input stream - send it downstream & say that we're done */
        *buf_in = NULL;
        hb_buffer_list_append(&ctx->list, in);

        *buf_out = hb_buffer_list_clear(&ctx->list);
        return HB_WORK_DONE;
    }

    if (!ctx->job->indepth_scan &&
        !hb_subtitle_must_burn(ctx->subtitle, ctx->job->mux))
    {
        // Append to buffer list.  It will be sent to fifo after we determine
        // if this is a packet we need.
        hb_buffer_list_append(&ctx->list_pass, in);

        // We are keeping the buffer, so prevent the filter loop from
        // deleting it.
        *buf_in = NULL;
    }

    AVSubtitle subtitle;
    memset( &subtitle, 0, sizeof(subtitle) );

    int64_t duration = AV_NOPTS_VALUE;

    ctx->pkt->data = in->data;
    ctx->pkt->size = in->size;
    ctx->pkt->pts  = in_s.start;
    if (in_s.duration > 0 || ctx->subtitle->source == SSASUB || ctx->subtitle->source == IMPORTSSA)
    {
        duration = in_s.duration;
    }

    if (duration <= 0 &&
        in_s.start != AV_NOPTS_VALUE &&
        in_s.stop  != AV_NOPTS_VALUE &&
        in_s.stop > in_s.start)
    {
        duration = in_s.stop - in_s.start;
    }

    int has_subtitle = 0;

    while (ctx->pkt->size > 0)
    {
        int usedBytes = avcodec_decode_subtitle2(ctx->context, &subtitle,
                                                 &has_subtitle, ctx->pkt );
        if (usedBytes < 0)
        {