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-rw-r--r--src/blind-mosaic.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/blind-mosaic.c b/src/blind-mosaic.c
index a0f36da..3cf40a2 100644
--- a/src/blind-mosaic.c
+++ b/src/blind-mosaic.c
@@ -158,8 +158,10 @@ main(int argc, char *argv[])
eopen_stream(&mosaic, argv[0]);
SELECT_PROCESS_FUNCTION(&colour);
- echeck_compat(&colour, &mosaic);
+ CHECK_ALPHA(&colour);
+ CHECK_N_CHAN(&colour, 4, 4);
+ echeck_compat(&colour, &mosaic);
fprint_stream_head(stdout, &colour);
efflush(stdout, "<stdout>");
process_each_frame_two_streams(&colour, &mosaic, STDOUT_FILENO, "<stdout>", process);