png.pro |
|
 |
png |
RFC 2083 |
 |
field -signature |
 |
 |
blob |
'\x89\x50\x4E\x47\x0D\x0A\x1A\x0A' |
 |
signature |
 |
 |
 |
png_chunk |
RFC 2083 |
 |
field -length |
 |
 |
integer |
0 |
 |
length |
 |
field -name |
 |
 |
string(fixed) |
|
 |
chunk type |
 |
field -flags |
 |
 |
flags |
|
 |
property bits |
 |
field -data |
 |
 |
strswitch |
|
 |
|
 |
field -crc |
 |
 |
checksum |
|
 |
4-byte CRC (Cyclic Redundancy Check) |
 |
 |
 |
png_IHDR |
|
 |
field -width |
 |
 |
integer |
|
 |
|
 |
field -height |
 |
 |
integer |
|
 |
|
 |
field -depth |
 |
 |
integer |
|
 |
bit depth |
 |
field -color |
 |
 |
flags |
|
 |
color type |
 |
field -colortype |
 |
 |
integer |
|
 |
color type |
 |
field -cm |
 |
 |
list |
|
 |
compression method |
 |
field -fm |
 |
 |
list |
|
 |
filter method |
 |
field -im |
 |
 |
list |
|
 |
interlace method |
 |
 |
 |
png_PLTE |
|
 |
fieldarray -colors |
 |
 |
integer |
|
 |
RGB value for each color of the index |
 |
 |
 |
png_bKGD |
|
 |
field -index |
 |
 |
integer |
|
 |
palette index of the color to be used as background |
 |
field -gray |
 |
 |
integer |
|
 |
gray level to be used as background |
 |
field -red |
 |
 |
integer |
|
 |
R of the RGB color to be used as background |
 |
field -green |
 |
 |
integer |
|
 |
G of the RGB color to be used as background |
 |
field -blue |
 |
 |
integer |
|
 |
B of the RGB color to be used as background |
 |
 |
 |
png_gAMA |
|
 |
field -gamma |
 |
 |
integer |
|
 |
gamma of the camera times 100000 |
 |
 |
 |
png_pHYs |
|
 |
field -x |
 |
 |
integer |
|
 |
pixels per unit, X axis |
 |
field -y |
 |
 |
integer |
|
 |
pixels per unit, Y axis |
 |
field -unit |
 |
 |
list |
|
 |
unit specifier |
 |
 |
 |
png_tEXt |
|
 |
field -keyword |
 |
 |
string(c) |
|
 |
|
 |
field -text |
 |
 |
string(fixed) |
|
 |
|
 |
 |
 |
png_tIME |
|
 |
field -year |
 |
 |
integer |
|
 |
|
 |
field -month |
 |
 |
integer |
|
 |
|
 |
field -day |
 |
 |
integer |
|
 |
|
 |
field -hour |
 |
 |
integer |
|
 |
|
 |
field -minute |
 |
 |
integer |
|
 |
|
 |
field -second |
 |
 |
integer |
|
 |
|
 |
 |
 |
png_tRNS |
|
 |
fieldarray -alphas |
 |
 |
integer |
|
 |
alpha for palette index |
 |
field -gray_alpha |
 |
 |
integer |
|
 |
|
 |
field -red_alpha |
 |
 |
integer |
|
 |
|
 |
field -green_alpha |
 |
 |
integer |
|
 |
|
 |
field -blue_alpha |
 |
 |
integer |
|
 |
|
 |
 |
 |
png_zTXt |
|
 |
field -keyword |
 |
 |
string(c) |
|
 |
|
 |
field -cm |
 |
 |
list |
|
 |
|
 |
field -ztext |
 |
 |
blob |
|
 |
|
 |
 |