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Third Party Libpng
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98f053ed
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Third Party Libpng
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体验新版 GitCode,发现更多精彩内容 >>
提交
98f053ed
编写于
6月 17, 2011
作者:
G
Glenn Randers-Pehrson
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电子邮件补丁
差异文件
[devel] Fix new bugs in pngvalid.c; it failed to compile.
上级
581d29d4
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
16 addition
and
18 deletion
+16
-18
pngvalid.c
pngvalid.c
+16
-18
未找到文件。
pngvalid.c
浏览文件 @
98f053ed
...
...
@@ -5286,7 +5286,7 @@ IT(scale_16);
#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
/* the default before 1.5.4 */
/* png_set_strip_16 */
static
void
image_transform_png_set_strip_16
(
PNG_CONST
image_transform
*
this
,
image_transform_png_set_strip_16
_set
(
PNG_CONST
image_transform
*
this
,
transform_display
*
that
,
png_structp
pp
,
png_infop
pi
)
{
png_set_strip_16
(
pp
);
...
...
@@ -5294,7 +5294,7 @@ image_transform_png_set_strip_16(PNG_CONST image_transform *this,
}
static
void
image_transform_png_set_strip_16
(
PNG_CONST
image_transform
*
this
,
image_transform_png_set_strip_16
_mod
(
PNG_CONST
image_transform
*
this
,
image_pixel
*
that
,
png_structp
pp
,
PNG_CONST
transform_display
*
display
)
{
if
(
that
->
bit_depth
==
16
)
...
...
@@ -5305,27 +5305,25 @@ image_transform_png_set_strip_16(PNG_CONST image_transform *this,
if
(
that
->
blue_sBIT
>
8
)
that
->
blue_sBIT
=
8
;
if
(
that
->
alpha_sBIT
>
8
)
that
->
alpha_sBIT
=
8
;
# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
/* The strip 16 algorithm drops the low 8 bits rather than calculating
* 1/257, so we need to adjust the permitted errors appropriately:
* Notice that this is only relevant prior to the addition of the
* png_set_scale_16 API in 1.5.4 (but 1.5.4+ always defines the above!)
*/
{
PNG_CONST
double
d
=
(
255
-
128
.
5
)
/
65535
;
that
->
rede
+=
d
;
that
->
greene
+=
d
;
that
->
bluee
+=
d
;
that
->
alphae
+=
d
;
}
# endif
/* The strip 16 algorithm drops the low 8 bits rather than calculating
* 1/257, so we need to adjust the permitted errors appropriately:
* Notice that this is only relevant prior to the addition of the
* png_set_scale_16 API in 1.5.4 (but 1.5.4+ always defines the above!)
*/
{
PNG_CONST
double
d
=
(
255
-
128
.
5
)
/
65535
;
that
->
rede
+=
d
;
that
->
greene
+=
d
;
that
->
bluee
+=
d
;
that
->
alphae
+=
d
;
}
}
this
->
next
->
mod
(
this
->
next
,
that
,
pp
,
display
);
}
static
int
image_transform_png_set_strip_16
(
image_transform
*
this
,
image_transform_png_set_strip_16
_add
(
image_transform
*
this
,
PNG_CONST
image_transform
**
that
,
png_byte
colour_type
,
png_byte
bit_depth
)
{
UNUSED
(
colour_type
)
...
...
@@ -6716,7 +6714,7 @@ gamma_component_validate(PNG_CONST char *name, PNG_CONST validate_info *vi,
* bit reduction is obtained by simply using the top 8 bits of the
* value.
*/
# if
ndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
# if
0
/*WAS: #ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED */
/* This may be required for other components in the future, but
* at present the presence of gamma correction effectively
* prevents the errors in the component scaling (I don't quite
...
...
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