diff options
Diffstat (limited to '')
| -rw-r--r-- | src/blind-round-wave.c | 47 |
1 files changed, 16 insertions, 31 deletions
diff --git a/src/blind-round-wave.c b/src/blind-round-wave.c index 00a30e1..5aa3026 100644 --- a/src/blind-round-wave.c +++ b/src/blind-round-wave.c @@ -5,46 +5,32 @@ USAGE("[-e]") static int equal = 0; - #define PROCESS(TYPE, SUFFIX)\ static void\ process_##SUFFIX(struct stream *stream)\ {\ - size_t i, n;\ - TYPE x, y, z, a;\ + size_t i, j, n;\ + TYPE v, *p;\ do {\ - n = stream->ptr / stream->pixel_size;\ if (equal) {\ + n = stream->ptr / stream->pixel_size;\ for (i = 0; i < n; i++) {\ - a = ((TYPE *)(stream->buf))[4 * i + 3];\ - a = mod(a + 1, (TYPE)4) - 1;\ - a = a < 1 ? 1 - a * a / 2 : (a - 2) * (a - 2) / 2;\ - ((TYPE *)(stream->buf))[4 * i + 0] = a;\ - ((TYPE *)(stream->buf))[4 * i + 1] = a;\ - ((TYPE *)(stream->buf))[4 * i + 2] = a;\ - ((TYPE *)(stream->buf))[4 * i + 3] = a;\ + p = (TYPE *)(stream->buf) + i * stream->n_chan;\ + v = posmod(*p + 1, (TYPE)4) - 1;\ + v = v < 1 ? 1 - v * v / 2 : (v - 2) * (v - 2) / 2;\ + for (j = 0; j < stream->n_chan; j++)\ + p[j] = v;\ }\ + n *= stream->pixel_size;\ } else {\ + n = stream->ptr / stream->chan_size;\ for (i = 0; i < n; i++) {\ - x = ((TYPE *)(stream->buf))[4 * i + 0];\ - y = ((TYPE *)(stream->buf))[4 * i + 1];\ - z = ((TYPE *)(stream->buf))[4 * i + 2];\ - a = ((TYPE *)(stream->buf))[4 * i + 3];\ - x = mod(x + 1, (TYPE)4) - 1;\ - y = mod(y + 1, (TYPE)4) - 1;\ - z = mod(z + 1, (TYPE)4) - 1;\ - a = mod(a + 1, (TYPE)4) - 1;\ - x = x < 1 ? 1 - x * x / 2 : (x - 2) * (x - 2) / 2;\ - y = y < 1 ? 1 - y * y / 2 : (y - 2) * (y - 2) / 2;\ - z = z < 1 ? 1 - z * z / 2 : (z - 2) * (z - 2) / 2;\ - a = a < 1 ? 1 - a * a / 2 : (a - 2) * (a - 2) / 2;\ - ((TYPE *)(stream->buf))[4 * i + 0] = x;\ - ((TYPE *)(stream->buf))[4 * i + 1] = y;\ - ((TYPE *)(stream->buf))[4 * i + 2] = z;\ - ((TYPE *)(stream->buf))[4 * i + 3] = a;\ + p = (TYPE *)(stream->buf) + i;\ + v = posmod(*p + 1, (TYPE)4) - 1;\ + *p = v < 1 ? 1 - v * v / 2 : (v - 2) * (v - 2) / 2;\ }\ + n *= stream->chan_size;\ }\ - n *= stream->pixel_size;\ ewriteall(STDOUT_FILENO, stream->buf, n, "<stdout>");\ memmove(stream->buf, stream->buf + n, stream->ptr -= n);\ } while (eread_stream(stream, SIZE_MAX));\ @@ -55,7 +41,6 @@ static int equal = 0; PROCESS(double, lf) PROCESS(float, f) - int main(int argc, char *argv[]) { @@ -75,9 +60,9 @@ main(int argc, char *argv[]) eopen_stream(&stream, NULL); - if (!strcmp(stream.pixfmt, "xyza")) + if (stream.encoding == DOUBLE) process = process_lf; - else if (!strcmp(stream.pixfmt, "xyza f")) + else if (stream.encoding == FLOAT) process = process_f; else eprintf("pixel format %s is not supported, try xyza\n", stream.pixfmt); |