diff options
Diffstat (limited to '')
| -rw-r--r-- | src/blind-transpose.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/src/blind-transpose.c b/src/blind-transpose.c index d1b4e47..c2d2d11 100644 --- a/src/blind-transpose.c +++ b/src/blind-transpose.c @@ -13,31 +13,36 @@ int main(int argc, char *argv[]) { struct stream stream; - char *buf, *image; - size_t n, imgw, srcw, srch, ps, x, y, i, b, dx; + char *buf, *row, *pix, *image, *imag, *img; + size_t n, srcw, srch, srcwps, srchps, ps, x, y, i; UNOFLAGS(argc); eopen_stream(&stream, NULL); - imgw = srch = stream.height; + srch = stream.height; stream.height = srcw = stream.width; - stream.width = imgw; + stream.width = srch; fprint_stream_head(stdout, &stream); efflush(stdout, "<stdout>"); echeck_frame_size(stream.width, stream.height, stream.pixel_size, 0, stream.file); - n = stream.width * stream.height * (ps = stream.pixel_size); + n = stream.height * stream.width * (ps = stream.pixel_size); buf = emalloc(n); - image = emalloc(n); /* TODO optimise to a frame row */ + image = emalloc(n); - srch *= ps; - srcw *= dx = imgw * ps; - imgw *= ps; + srchps = srch * ps; + srcwps = srcw * ps; while (eread_frame(&stream, buf, n)) { - for (b = y = 0; y < srch; y += ps) - for (x = 0; x < srcw; x += dx) - for (i = 0; i < ps; i++, b++) - image[y + x + i] = buf[b]; + for (y = 0; y < srchps; y += ps) { + imag = image + y; + row = buf + y * srcw; + for (x = 0; x < srcwps; x += ps) { + img = imag + x * srch; + pix = row + x; + for (i = 0; i < ps; i++) + img[i] = pix[i]; + } + } ewriteall(STDOUT_FILENO, image, n, "<stdout>"); } |