Skip to content

Fix APNG push/sequential frame-count divergence (#891) #893

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
0xMrNiko wants to merge 1 commit into
base: libpng18
Choose a base branch
from
Open

Fix APNG push/sequential frame-count divergence (#891) #893

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 8 additions & 2 deletions pngpread.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -591,8 +591,14 @@ png_push_read_IDAT(png_struct *png_ptr)
png_error(png_ptr, "Not enough compressed data");

#ifdef PNG_READ_APNG_SUPPORTED
if (png_ptr->frame_end_fn != NULL)
(*(png_ptr->frame_end_fn))(png_ptr, png_ptr->num_frames_read);
/* Default image is not an animation frame when the leading fcTL was
* ignored; match sequential reader (no frame_end for hidden frame).
*/
if ((png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN) == 0)
{
if (png_ptr->frame_end_fn != NULL)
(*(png_ptr->frame_end_fn))(png_ptr, png_ptr->num_frames_read);
}
png_ptr->num_frames_read++;
#endif

Expand Down