As mentioned in issue #1777, exporting non-animated WebP images was
only keeping the current layer.
Mimick file-gif-save.c: display the encoding settings pop-up earlier
so that gimp_export_image() can merge the layers unless "As Animation"
is enabled. Call gimp_image_get_layers() directly in save_image() in
case the layers were merged (for clarity because layers are used only
for animations).
(cherry picked from commit 8f828d1899)
Similarly to other export dialogs, we don't consider anymore metadata or
profile writing as being advanced options. Since these were the only
options shown in our current WebP export dialog, I removed the expander
altogether and moved everything out.
See also commit 540cfa9611.
(cherry picked from commit 26ba915ca5)
The hint text was shown on kmax change, but not when it was 0 or 1 from
start (i.e. when previous export was 0/1 so these were the saved
values). Run the callback upon construction to initialize properly this
hint label.
Since libwebp 0.6, the keyframe max distance (kmax) has been changed,
and in particular all special cases are now handled by kmax (it used to
be weird cases of kmin and kmax intertwined with no logics, for instance
kmax == 0 AND kmin > 0 would mean all frames are keyframes).
Now it is much more logical, and kmax == 0 means no keyframes, whereas
kmax == 1 means all frames are keyframes. See also:
2dc0bdcaee
webp-save: Add UI elements for 'minimize size' toggle, and a dependent
'max key-frame distance' setting.
* If 'minimize size' is active, max-kf is disabled (which is equivalent to
setting it to infinity). Key-frame cost file size, that's why.
* If 'minimize size' is disabled, you get to choose how far key-frames
(=cue points) will be inserted at max.
The "Preset" feature changes encoding parameters not exposed in our GUI.
Thus it looks like the option is broken as whatever you select, nothing
is updated in the export dialog.
This is also inconsistent with what we call presets in the rest of GIMP:
they are used to save and load values for all fields as a dynamic and
editable list (whereas here that's a pre-defined list in libwebp setting
only a subset of options).
`cwebp` manual defines "preset" as: "Specify a set of pre-defined
parameters to suit a particular type of source material."
Thus call the field "Source type" and add a tooltip "WebP encoder preset"
so that people don't expect a way to save settings whereas the ones used
to the WebP encoder parameters still find their way.
...in the export dialog
- change the *preset field to a proper enum
- clean-up some code related to preset
- change the UI dialogs to use a GimpIntComboBox
- misc style fixes
- quite modified by mitch to be much less code
- get_preset_from_id() was defined in file-webp-dialog.c but used in
file-webp.c only. Move it there.
- Make the preset list available in file-webp-save.h header (since it
is specifically an encoder attribute) as static, because it is used
both in the dialog ("preset" choice list) and the main file (for match
of the "preset" parameter as internal ID to a WebPPreset when run as
non-interactive).
- Generate the "preset" parameter description from the preset list.
This way, even if this list were to change (in some hypothetical
future), the description (and in particular the list of possible
values and their int match) won't end up wrong.
- "enum WebPPreset" is typedef-ed to "WebPPreset".
- Use G_N_ELEMENTS to compute length of arrays on the stack (equivalent
to the current code but shorter and simpler to read).
- Many formatting fixes.
- change the *preset field to a proper enum
- clean-up some code related to preset
- change the UI dialogs to use a GimpIntComboBox.
- misc style fixes
- Default parameters must be set before gimp_get_data(). Otherwise
when you export the first time, you end up with broken defaults
(basically everything to 0, in particular a problem with quality
values of 0 which makes an export failure).
- Some minor formatting here and there and an unused variable.
animated webp saving: parse time-stamp from layer_name (instead of using
default value of '100')
also:
- add a default delay field to UI, in case time-stamps are not present.
- add a 'force delay' checkbox
- revamp the whole UI to look like the GIF saving UI.
- handle all sorts of image types, gegl_buffer_get() will convert to u8
- specify GIMP_EXPORT_CAN_HANDLE_LAYERS_AS_ANIMATION
- modify the export duplicate, not the original image
- fix handling of the drawable type and only save "R'G'B'A u8"
or "R'G'B' u8", fixes bug 770664.
- completely redo run(SAVE_PROC) to deal with export correctly
- turn global variables into the standard SAVE_PROC, PLUG_IN_BINARY etc
defines
- simplify the save dialog
This adds an expander to the webp file plug-in to select whether
to save or not the exif, and xmp data for webp files. This harmonizes
the plug-in with a similar option to the jpg/png file plug-ins.
https://bugzilla.gnome.org/show_bug.cgi?id=769871
