63         FileBufSlot *slot = NULL;  in thread_input()
104     return NULL;  in thread_input()
120         MppFrame frame = NULL;  in thread_output()
128         if (NULL == frame) {  in thread_output()
140             MppBufferGroup grp = NULL;  in thread_output()
147                 MppFrame frm = NULL;  in thread_output()
172             ret = mpi->control(ctx, MPP_DEC_SET_INFO_CHANGE_READY, NULL);  in thread_output()
220     return NULL;  in thread_output()
229     MppCtx ctx          = NULL;  in mt_dec_decode()
230     MppApi *mpi         = NULL;  in mt_dec_decode()
233     MppPacket packet    = NULL;  in mt_dec_decode()
234     MppFrame  frame     = NULL;  in mt_dec_decode()
237     MppDecCfg cfg       = NULL;  in mt_dec_decode()
255         if (NULL == data.fp_output) {  in mt_dec_decode()
267     ret = mpp_packet_init(&packet, NULL, 0);  in mt_dec_decode()
367     pthread_join(thd_in, NULL);  in mt_dec_decode()
368     pthread_join(thd_out, NULL);  in mt_dec_decode()
379         packet = NULL;  in mt_dec_decode()
384         frame = NULL;  in mt_dec_decode()
389         ctx = NULL;  in mt_dec_decode()
392     data.frm_grp = NULL;  in mt_dec_decode()
395         data.buf_mgr = NULL;  in mt_dec_decode()
400         data.fp_output = NULL;  in mt_dec_decode()
405         cfg = NULL;  in mt_dec_decode()