diff options
Diffstat (limited to 'src/blind-extract-alpha.c')
| -rw-r--r-- | src/blind-extract-alpha.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/blind-extract-alpha.c b/src/blind-extract-alpha.c index 49b3947..3d74ece 100644 --- a/src/blind-extract-alpha.c +++ b/src/blind-extract-alpha.c @@ -20,6 +20,8 @@ main(int argc, char *argv[]) fd = eopen(argv[0], O_WRONLY | O_CREAT | O_TRUNC, 0666); SELECT_PROCESS_FUNCTION(&stream); + CHECK_CHANS(&stream, != -1, == stream.luma_chan); + fprint_stream_head(stdout, &stream); efflush(stdout, "<stdout>"); if (dprint_stream_head(fd, &stream) < 0) @@ -38,7 +40,7 @@ PROCESS(struct stream *stream, int fd, const char *fname) TYPE a, *p, *b; do { n = stream->ptr / stream->pixel_size; - p = (TYPE *)(stream->buf) + stream->n_chan - 1; + p = (TYPE *)(stream->buf) + stream->luma_chan; b = (TYPE *)buf; for (i = 0; i < n; i++, p += stream->n_chan) { a = *p, *p = 1; |