error_resilience: skip last-MV predictor step if MVs are not available.

Fixes crashes when playing broken MPEG2-TS streams.

Ronald Bultje committed 15 years ago

Commit 20153fb1 parent d42aaa81 file · +4 −0Browse files

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                             ff_thread_await_progress((AVFrame *) s->last_picture_ptr,
                                                      mb_y, 0);
                         }
+                        if (!s->last_picture.motion_val[0] ||
+                            !s->last_picture.ref_index[0])
+                            goto skip_last_mv;
                         prev_x = s->last_picture.motion_val[0][mot_index][0];
                         prev_y = s->last_picture.motion_val[0][mot_index][1];
                         prev_ref = s->last_picture.ref_index[0][4*mb_xy];
                     mv_predictor[pred_count][1]= prev_y;
                     ref         [pred_count]   = prev_ref;
                     pred_count++;
+                skip_last_mv:
                     s->mv_dir = MV_DIR_FORWARD;
                     s->mb_intra=0;

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