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Third Party Libpng
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Third Party Libpng
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体验新版 GitCode,发现更多精彩内容 >>
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1296329f
编写于
5月 13, 2009
作者:
G
Glenn Randers-Pehrson
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差异文件
Revised commentary in example.c
上级
e38b4328
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1
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4 deletion
+6
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example.c
example.c
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example.c
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1296329f
...
...
@@ -244,7 +244,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
/* If we don't have another value */
else
{
screen_gamma
=
2
.
2
;
/* A good guess for a PC monitor
s
in a dimly
screen_gamma
=
2
.
2
;
/* A good guess for a PC monitor in a dimly
lit room */
screen_gamma
=
1
.
7
or
1
.
0
;
/* A good guess for Mac systems */
}
...
...
@@ -681,9 +681,11 @@ void write_png(char *file_name /* , ... other image information ... */)
#endif
png_set_text
(
png_ptr
,
info_ptr
,
text_ptr
,
3
);
/* other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs, */
/* other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
/* note that if sRGB is present the gAMA and cHRM chunks must be ignored
* on read and must be written in accordance with the sRGB profile */
* on read and, if your application chooses to write them, they must
* be written in accordance with the sRGB profile */
/* Write the file header information. REQUIRED */
png_write_info
(
png_ptr
,
info_ptr
);
...
...
@@ -779,7 +781,7 @@ void write_png(char *file_name /* , ... other image information ... */)
#endif no_entire
/* use only one output method */
/* You can write optional chunks like tEXt, zTXt, and tIME at the end
* as well. Shouldn't be necessary in 1.
1
.0 and up as all the public
* as well. Shouldn't be necessary in 1.
2
.0 and up as all the public
* chunks are supported and you can use png_set_unknown_chunks() to
* register unknown chunks into the info structure to be written out.
*/
...
...
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