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Added LAB mode, core dumped

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This commit is contained in:
wiredfool 2013-10-10 23:27:34 -07:00
parent ac38d91a2d
commit 1c3932e89f
6 changed files with 22 additions and 4 deletions
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2
PIL/Image.py
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@ -200,6 +200,7 @@ _MODEINFO = {
"RGBA": ("RGB", "L", ("R", "G", "B", "A")),
"CMYK": ("RGB", "L", ("C", "M", "Y", "K")),
"YCbCr": ("RGB", "L", ("Y", "Cb", "Cr")),
"LAB": ("RGB", "L", ("L", "A", "B")),
# Experimental modes include I;16, I;16L, I;16B, RGBa, BGR;15, and
# BGR;24. Use these modes only if you know exactly what you're
@ -224,6 +225,7 @@ _MODE_CONV = {
"RGBA": ('|u1', 4),
"CMYK": ('|u1', 4),
"YCbCr": ('|u1', 3),
"LAB": ('|u1', 3),
"I;16": ('=u2', None),
"I;16B": ('>u2', None),
"I;16L": ('<u2', None),

6
Tests/test_imagecms.py
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@ -97,12 +97,12 @@ def test_lab_color_profile():
def test_lab_color():
pLab = ImageCms.createProfile("LAB")
t = ImageCms.buildTransform(SRGB, pLab, "RGB", "RGB")
t = ImageCms.buildTransform(SRGB, pLab, "RGB", "LAB")
# need to add a type mapping for some PIL type to TYPE_Lab_8 in findLCMSType,
# and have that mapping work back to a PIL mode. (likely RGB)
i = ImageCms.applyTransform(lena(), t)
assert_image(i, "RGB", (128, 128))
assert_image(i, "LAB", (128, 128))
target = Image.open('Tests/images/lena.Lab.tif')
assert_image_similar(i,target, 1)
assert_image_similar(i, target, 1)

3
_imagingcms.c
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@ -236,6 +236,9 @@ findLCMStype(char* PILmode)
else if (strcmp(PILmode, "YCC") == 0) {
return TYPE_YCbCr_8;
}
else if (strcmp(PILmode, "LAB") == 0) {
return TYPE_Lab_8;
}
else {
/* take a wild guess... but you probably should fail instead. */

1
libImaging/Imaging.h
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@ -40,6 +40,7 @@ extern "C" {
* RGBA 4 R, G, B, A
* CMYK 4 C, M, Y, K
* YCbCr 4 Y, Cb, Cr, -
* Lab 4 L, a, b, -
*
* experimental modes (incomplete):
* LA 4 L, -, -, A

6
libImaging/Pack.c
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@ -526,6 +526,12 @@ static struct {
{"YCbCr", "Cb", 8, band1},
{"YCbCr", "Cr", 8, band2},
/* LAB Color */
{"LAB", "LAB", 24, ImagingPackRGB},
{"LAB", "L", 8, band0},
{"LAB", "B", 8, band1},
{"LAB", "B", 8, band2},
/* integer */
{"I", "I", 32, copy4},
{"I", "I;16B", 16, packI16B},

8
libImaging/Storage.c
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@ -178,9 +178,15 @@ ImagingNewPrologueSubtype(const char *mode, unsigned xsize, unsigned ysize,
im->pixelsize = 4;
im->linesize = xsize * 4;
} else if (strcmp(mode, "LAB") == 0) {
/* 24-bit color, luminance, + 2 color channels */
im->bands = 3;
im->pixelsize = 4;
im->linesize = xsize * 4;
} else {
free(im);
return (Imaging) ImagingError_ValueError("unrecognized mode");
return (Imaging) ImagingError_ValueError("unrecognized mode");
}
/* Setup image descriptor */