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[devel] Update CHANGES and ANNOUNCE; fix some new typos in comments.

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Glenn Randers-Pehrson 2011-05-15 19:09:24 -05:00
parent 9994f25733
commit 0e128dfa2f
4 changed files with 19 additions and 11 deletions
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8
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.5.3beta08 - May 13, 2011 Libpng 1.5.3beta08 - May 16, 2011
This is not intended to be a public release. It will be replaced This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version. within a few weeks by a public version or by another test version.
@ -112,7 +112,7 @@ Version 1.5.3beta07 [May 11, 2011]
Check for up->location !PNG_AFTER_IDAT when writing unknown chunks Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
before IDAT. before IDAT.
Version 1.5.3beta08 [May 13, 2011] Version 1.5.3beta08 [May 16, 2011]
Improved "pngvalid --speed" to exclude more of pngvalid from the time. Improved "pngvalid --speed" to exclude more of pngvalid from the time.
Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt
The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative
@ -122,6 +122,10 @@ Version 1.5.3beta08 [May 13, 2011]
png_set_background(), allowing the latter to be used before the file png_set_background(), allowing the latter to be used before the file
header is read. It never performed any useful function to override header is read. It never performed any useful function to override
the default anyway. the default anyway.
Added memory overwrite and palette image checks to pngvalid.c
Previously palette image code was poorly checked, since the transformation code
has a special palette path in most cases this was a severe weakness.
Minor cleanup and some extra checking in pngrutil.c and pngrtran.c
Send comments/corrections/commendations to png-mng-implement at lists.sf.net: Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
(subscription required; visit (subscription required; visit

6
CHANGES
View File

@ -3371,7 +3371,7 @@ Version 1.5.3beta07 [May 11, 2011]
Check for up->location !PNG_AFTER_IDAT when writing unknown chunks Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
before IDAT. before IDAT.
Version 1.5.3beta08 [May 13, 2011] Version 1.5.3beta08 [May 16, 2011]
Improved "pngvalid --speed" to exclude more of pngvalid from the time. Improved "pngvalid --speed" to exclude more of pngvalid from the time.
Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt
The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative
@ -3381,6 +3381,10 @@ Version 1.5.3beta08 [May 13, 2011]
png_set_background(), allowing the latter to be used before the file png_set_background(), allowing the latter to be used before the file
header is read. It never performed any useful function to override header is read. It never performed any useful function to override
the default anyway. the default anyway.
Added memory overwrite and palette image checks to pngvalid.c
Previously palette image code was poorly checked, since the transformation code
has a special palette path in most cases this was a severe weakness.
Minor cleanup and some extra checking in pngrutil.c and pngrtran.c
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit

2
pngrtran.c
View File

@ -1781,7 +1781,7 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{ {
/* This check must match what actually happens in /* This check must match what actually happens in
* png_do_expand_palette; if it every checks the tRNS chunk to see if * png_do_expand_palette; if it ever checks the tRNS chunk to see if
* it is all opaque we must do the same (at present it does not.) * it is all opaque we must do the same (at present it does not.)
*/ */
if (png_ptr->num_trans > 0) if (png_ptr->num_trans > 0)

14
pngvalid.c
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@ -854,8 +854,8 @@ store_ensure_image(png_store *ps, png_structp pp, int nImages, png_size_t cbRow,
ps->cb_image = cb; ps->cb_image = cb;
} }
/* We have an adequate sized image, lay out the rows. There are 2 bytes at /* We have an adequate sized image; lay out the rows. There are 2 bytes at
* the start and three at the end of each (this ensures tha the row alignment * the start and three at the end of each (this ensures that the row alignment
* starts out odd - 2+1 and changes for larger images on each row.) * starts out odd - 2+1 and changes for larger images on each row.)
*/ */
ps->cb_row = cbRow; ps->cb_row = cbRow;
@ -867,7 +867,7 @@ store_ensure_image(png_store *ps, png_structp pp, int nImages, png_size_t cbRow,
*/ */
memset(ps->image, 0xff, cb); memset(ps->image, 0xff, cb);
/* Then put the marks go in. */ /* Then put in the marks. */
while (--nImages >= 0) while (--nImages >= 0)
{ {
png_uint_32 y; png_uint_32 y;
@ -2086,7 +2086,7 @@ set_modifier_for_read(png_modifier *pm, png_infopp ppi, png_uint_32 id,
* time for the same test - it depends on what previous tests have been run - * time for the same test - it depends on what previous tests have been run -
* but a given set of arguments to pngvalid will always produce the same palette * but a given set of arguments to pngvalid will always produce the same palette
* at the same test! This is why pseudo-random number generators are useful for * at the same test! This is why pseudo-random number generators are useful for
* testing. * testing.)
* *
* The store must be open for write when this is called, otherwise an internal * The store must be open for write when this is called, otherwise an internal
* error will occur. This routine contains its own magic number seed, so the * error will occur. This routine contains its own magic number seed, so the
@ -2235,7 +2235,7 @@ init_standard_palette(png_store *ps, png_structp pp, png_infop pi, int npalette,
} }
} }
/* The number of passes is related to the interlace type. There wass no libpng /* The number of passes is related to the interlace type. There was no libpng
* API to determine this prior to 1.5, so we need an inquiry function: * API to determine this prior to 1.5, so we need an inquiry function:
*/ */
static int static int
@ -4872,7 +4872,7 @@ image_transform_png_set_tRNS_to_alpha_mod(PNG_CONST image_transform *this,
image_pixel_convert_PLTE(that); image_pixel_convert_PLTE(that);
/* This effectively does an 'expand' only if there is some transparency to /* This effectively does an 'expand' only if there is some transparency to
* covert to an alpha channel. * convert to an alpha channel.
*/ */
if (that->have_tRNS) if (that->have_tRNS)
image_pixel_add_alpha(that, &display->this); image_pixel_add_alpha(that, &display->this);
@ -5329,7 +5329,7 @@ image_transform_png_set_background_set(PNG_CONST image_transform *this,
else else
back.gray = (png_uint_16)that->background_colour.red; back.gray = (png_uint_16)that->background_colour.red;
# ifdef PNG_FLOATING_POINT_SUPPORTED # ifdef PNG_FLOATING_POINT_SUPPORTED
png_set_background(pp, &back, PNG_BACKGROUND_GAMMA_FILE, 1/*need expand*/, png_set_background(pp, &back, PNG_BACKGROUND_GAMMA_FILE, 1/*need expand*/,
0); 0);