diff options
Diffstat (limited to 'ext/gd/gd.c')
| -rw-r--r-- | ext/gd/gd.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/ext/gd/gd.c b/ext/gd/gd.c index 744a9cb43a..6bb3608abb 100644 --- a/ext/gd/gd.c +++ b/ext/gd/gd.c @@ -118,6 +118,7 @@ function_entry gd_functions[] = { PHP_FE(imagecreatefromjpeg, NULL) PHP_FE(imagejpeg, NULL) PHP_FE(imagedestroy, NULL) + PHP_FE(imagegammacorrect, NULL) PHP_FE(imagefill, NULL) PHP_FE(imagefilledpolygon, NULL) PHP_FE(imagefilledrectangle, NULL) @@ -1050,6 +1051,32 @@ PHP_FUNCTION(imagecolorsforindex) } /* }}} */ +PHP_FUNCTION(imagegammacorrect) +{ + zval **IM, **inputgamma, **outputgamma; + gdImagePtr im; + int i; + GDLS_FETCH(); + + if (ARG_COUNT(ht) != 3 || + zend_get_parameters_ex(3, &IM, &inputgamma, &outputgamma) == FAILURE) { + WRONG_PARAM_COUNT; + } + + convert_to_double_ex(inputgamma); + convert_to_double_ex(outputgamma); + + ZEND_FETCH_RESOURCE(im, gdImagePtr, IM, -1, "Image", GDG(le_gd)); + + for (i = 0; i < gdImageColorsTotal(im); i++) { + im->red[i] = (int)((pow((pow((im->red[i] / 255.0),(*inputgamma)->value.dval)), 1.0 / (*outputgamma)->value.dval) * 255)+.5); + im->green[i] = (int)((pow((pow((im->green[i] / 255.0),(*inputgamma)->value.dval)), 1.0 / (*outputgamma)->value.dval) * 255)+.5); + im->blue[i] = (int)((pow((pow((im->blue[i] / 255.0),(*inputgamma)->value.dval)), 1.0 / (*outputgamma)->value.dval) * 255)+.5); + } + + RETURN_TRUE; +} + /* {{{ proto int imagesetpixel(int im, int x, int y, int col) Set a single pixel */ PHP_FUNCTION(imagesetpixel) @@ -1060,8 +1087,7 @@ PHP_FUNCTION(imagesetpixel) GDLS_FETCH(); if (ARG_COUNT(ht) != 4 || - zend_get_parameters_ex(4, &imgind, &xarg, &yarg, &colarg) == FAILURE) - { + zend_get_parameters_ex(4, &imgind, &xarg, &yarg, &colarg) == FAILURE) { WRONG_PARAM_COUNT; } @@ -1081,7 +1107,6 @@ PHP_FUNCTION(imagesetpixel) } /* }}} */ -/* im, x1, y1, x2, y2, col */ /* {{{ proto int imageline(int im, int x1, int y1, int x2, int y2, int col) Draw a line */ PHP_FUNCTION(imageline) |