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Storage, packing and access for HSV format images

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This commit is contained in:
wiredfool 2014-07-21 22:31:32 -07:00
parent ee4793a806
commit 625ff24358
7 changed files with 25 additions and 2 deletions
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1
PIL/Image.py
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@ -220,6 +220,7 @@ _MODEINFO = {
"CMYK": ("RGB", "L", ("C", "M", "Y", "K")),
"YCbCr": ("RGB", "L", ("Y", "Cb", "Cr")),
"LAB": ("RGB", "L", ("L", "A", "B")),
"HSV": ("RGB", "L", ("H", "S", "V")),
# 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

1
PIL/PyAccess.py
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@ -261,6 +261,7 @@ mode_map = {'1': _PyAccess8,
'PA': _PyAccess32_2,
'RGB': _PyAccess32_3,
'LAB': _PyAccess32_3,
'HSV': _PyAccess32_3,
'YCbCr': _PyAccess32_3,
'RGBA': _PyAccess32_4,
'RGBa': _PyAccess32_4,

1
Tests/make_hash.py
View File

@ -9,6 +9,7 @@ modes = [
"RGB", "RGBA", "RGBa", "RGBX",
"CMYK",
"YCbCr",
"LAB", "HSV",
]

5
libImaging/Access.c
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@ -13,8 +13,8 @@
#include "Imaging.h"
/* use Tests/make_hash.py to calculate these values */
#define ACCESS_TABLE_SIZE 21
#define ACCESS_TABLE_HASH 30197
#define ACCESS_TABLE_SIZE 27
#define ACCESS_TABLE_HASH 3078
static struct ImagingAccessInstance access_table[ACCESS_TABLE_SIZE];
@ -238,6 +238,7 @@ ImagingAccessInit()
ADD("CMYK", line_32, get_pixel_32, put_pixel_32);
ADD("YCbCr", line_32, get_pixel_32, put_pixel_32);
ADD("LAB", line_32, get_pixel_32, put_pixel_32);
ADD("HSV", line_32, get_pixel_32, put_pixel_32);
}
ImagingAccess

6
libImaging/Pack.c
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@ -566,6 +566,12 @@ static struct {
{"LAB", "A", 8, band1},
{"LAB", "B", 8, band2},
/* HSV */
{"HSV", "HSV", 24, ImagingPackRGB},
{"HSV", "H", 8, band0},
{"HSV", "S", 8, band1},
{"HSV", "V", 8, band2},
/* integer */
{"I", "I", 32, copy4},
{"I", "I;16B", 16, packI16B},

7
libImaging/Storage.c
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@ -186,6 +186,13 @@ ImagingNewPrologueSubtype(const char *mode, unsigned xsize, unsigned ysize,
im->pixelsize = 4;
im->linesize = xsize * 4;
} else if (strcmp(mode, "HSV") == 0) {
/* 24-bit color, luminance, + 2 color channels */
/* L is uint8, a,b are int8 */
im->bands = 3;
im->pixelsize = 4;
im->linesize = xsize * 4;
} else {
free(im);
return (Imaging) ImagingError_ValueError("unrecognized mode");

6
libImaging/Unpack.c
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@ -1159,6 +1159,12 @@ static struct {
{"LAB", "A", 8, band1},
{"LAB", "B", 8, band2},
/* HSV Color */
{"HSV", "HSV", 24, ImagingUnpackRGB},
{"HSV", "H", 8, band0},
{"HSV", "S", 8, band1},
{"HSV", "V", 8, band2},
/* integer variations */
{"I", "I", 32, copy4},
{"I", "I;8", 8, unpackI8},