diff options
| -rw-r--r-- | src/PJ_pipeline.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/PJ_pipeline.c b/src/PJ_pipeline.c index af9c5394..3dcc85d9 100644 --- a/src/PJ_pipeline.c +++ b/src/PJ_pipeline.c @@ -320,6 +320,7 @@ PJ *OPERATION(pipeline,0) { int i, nsteps = 0, argc; int i_pipeline = -1, i_first_step = -1, i_current_step; char **argv, **current_argv; + PJ *Q; P->fwd4d = pipeline_forward_4d; P->inv4d = pipeline_reverse_4d; @@ -429,14 +430,29 @@ PJ *OPERATION(pipeline,0) { /* Is this step inverted? */ for (j = 0; j < current_argc; j++) - if (0==strcmp("inv", current_argv[j])) + if (0==strcmp("inv", current_argv[j])) { next_step->inverted = 1; + } P->opaque->pipeline[i+1] = next_step; proj_log_trace (P, "Pipeline at [%p]: step at [%p] done", P, next_step); } + /* determine if an inverse operation is possible */ + for (i = 1; i <= nsteps; i++) { + Q = P->opaque->pipeline[i]; + if ( ( Q->inverted && (Q->fwd || Q->fwd3d || Q->fwd4d) ) || + ( Q->inv || Q->inv3d || Q->inv4d) ) { + continue; + } else { + P->inv = 0; + P->inv3d = 0; + P->inv4d = 0; + break; + } + } + proj_log_trace (P, "Pipeline: %d steps built. Determining i/o characteristics", nsteps); /* Determine forward input (= reverse output) data type */ |