diff options
Diffstat (limited to 'src/blind-to-image.c')
| -rw-r--r-- | src/blind-to-image.c | 128 |
1 files changed, 67 insertions, 61 deletions
diff --git a/src/blind-to-image.c b/src/blind-to-image.c index 534eef3..c7cf37d 100644 --- a/src/blind-to-image.c +++ b/src/blind-to-image.c @@ -17,70 +17,74 @@ static int alpha_warning_triggered = 0; static unsigned long long int max; static int bytes; -static void -write_pixel(double R, double G, double B, double A) -{ - unsigned long long int colours[4]; - unsigned char buf[4 * 8]; - int i, j, k, bm = bytes - 1; - - if (R < 0 || G < 0 || B < 0 || R > 1 || G > 1 || B > 1) { - if (gamut_warning_triggered) { - gamut_warning_triggered = 1; - weprintf("warning: out-of-gamut colour detected\n"); - } - ; /* TODO gamut */ - R = CLIP(0, R, 1); - G = CLIP(0, G, 1); - B = CLIP(0, B, 1); - } +#define WRITE_PIXEL(TYPE, SUFFIX)\ + do {\ + unsigned long long int colours[4];\ + unsigned char buf[4 * 8];\ + int i, j, k, bm = bytes - 1;\ + \ + if (R < 0 || G < 0 || B < 0 || R > 1 || G > 1 || B > 1) {\ + if (gamut_warning_triggered) {\ + gamut_warning_triggered = 1;\ + weprintf("warning: out-of-gamut colour detected\n");\ + }\ + ; /* TODO gamut */\ + R = CLIP(0, R, 1);\ + G = CLIP(0, G, 1);\ + B = CLIP(0, B, 1);\ + }\ + \ + if (A < 0 || A > 1) {\ + if (alpha_warning_triggered) {\ + alpha_warning_triggered = 1;\ + weprintf("warning: alpha values truncated\n");\ + }\ + A = A < 0 ? 0 : 1;\ + }\ + \ + colours[0] = srgb_encode##SUFFIX(R) * max + (TYPE)0.5;\ + colours[1] = srgb_encode##SUFFIX(G) * max + (TYPE)0.5;\ + colours[2] = srgb_encode##SUFFIX(B) * max + (TYPE)0.5;\ + colours[3] = A * max + (TYPE)0.5;\ + \ + for (i = k = 0; i < 4; i++, k += bytes) {\ + for (j = 0; j < bytes; j++) {\ + buf[k + bm - j] = (unsigned char)(colours[i]);\ + colours[i] >>= 8;\ + }\ + }\ + \ + ewriteall(STDOUT_FILENO, buf, k, "<stdout>");\ + } while (0) - if (A < 0 || A > 1) { - if (alpha_warning_triggered) { - alpha_warning_triggered = 1; - weprintf("warning: alpha values truncated\n"); - } - A = A < 0 ? 0 : 1; - } +#define PROCESS(TYPE, SUFFIX)\ + do {\ + size_t i;\ + TYPE X, Y, Z, A, R, G, B;\ + for (i = 0; i < n; i += stream->pixel_size) {\ + X = ((TYPE *)(stream->buf + i))[0];\ + Y = ((TYPE *)(stream->buf + i))[1];\ + Z = ((TYPE *)(stream->buf + i))[2];\ + A = ((TYPE *)(stream->buf + i))[3];\ + \ + if (Y < 0 || Y > 1) {\ + if (luma_warning_triggered) {\ + luma_warning_triggered = 1;\ + weprintf("warning: %s colour detected\n",\ + Y < 0 ? "subblack" : "superwhite");\ + }\ + }\ + \ + ciexyz_to_srgb##SUFFIX(X, Y, Z, &R, &G, &B);\ + write_pixel##SUFFIX(R, G, B, A);\ + }\ + } while (0) - colours[0] = srgb_encode(R) * max + 0.5; - colours[1] = srgb_encode(G) * max + 0.5; - colours[2] = srgb_encode(B) * max + 0.5; - colours[3] = A * max + 0.5; +static void write_pixel(double R, double G, double B, double A) {WRITE_PIXEL(double,);} +static void write_pixel_f(float R, float G, float B, float A) {WRITE_PIXEL(float, _f);} - for (i = k = 0; i < 4; i++, k += bytes) { - for (j = 0; j < bytes; j++) { - buf[k + bm - j] = (unsigned char)(colours[i]); - colours[i] >>= 8; - } - } - - ewriteall(STDOUT_FILENO, buf, k, "<stdout>"); -} - -static void -process_xyza(struct stream *stream, size_t n) -{ - size_t i; - double X, Y, Z, A, R, G, B; - for (i = 0; i < n; i += stream->pixel_size) { - X = ((double *)(stream->buf + i))[0]; - Y = ((double *)(stream->buf + i))[1]; - Z = ((double *)(stream->buf + i))[2]; - A = ((double *)(stream->buf + i))[3]; - - if (Y < 0 || Y > 1) { - if (luma_warning_triggered) { - luma_warning_triggered = 1; - weprintf("warning: %s colour detected\n", - Y < 0 ? "subblack" : "superwhite"); - } - } - - ciexyz_to_srgb(X, Y, Z, &R, &G, &B); - write_pixel(R, G, B, A); - } -} +static void process_xyza (struct stream *stream, size_t n) {PROCESS(double,);} +static void process_xyzaf(struct stream *stream, size_t n) {PROCESS(float, _f);} int main(int argc, char *argv[]) @@ -111,6 +115,8 @@ main(int argc, char *argv[]) if (!strcmp(stream.pixfmt, "xyza")) process = process_xyza; + else if (!strcmp(stream.pixfmt, "xyza f")) + process = process_xyzaf; else eprintf("pixel format %s is not supported, try xyza\n", stream.pixfmt); |