Mercurial > octave-nkf
diff scripts/image/private/__imwrite__.m @ 17855:bfbe5dcc9943
imwrite: implement DisposalMethod option.
* __magick_read__.cc (F__magick_write__): set gifDisposeMethod() when
writing an image to implement the DisposalMethod option. Set all the
options in a single option rather than a loop per option.
(init_reverse_disposal_methods): new method to return a reversed std::map
of the disposal methods.
(init_disposal_methods): move up, to be closer to the new
init_reverse_disposal_methods()
* private/__imwrite__.m: input check for the new option DisposalMethod and
set its default.
* imwrite.m: document new option.
| author | Carnë Draug <carandraug@octave.org> |
|---|---|
| date | Tue, 05 Nov 2013 07:05:30 +0000 |
| parents | adb0ba0d0c13 |
| children | 4197fc428c7d |
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--- a/scripts/image/private/__imwrite__.m Tue Nov 05 05:48:56 2013 +0000 +++ b/scripts/image/private/__imwrite__.m Tue Nov 05 07:05:30 2013 +0000 @@ -42,6 +42,7 @@ ## set default for options options = struct ("writemode", "overwrite", + "disposalmethod", {repmat({"doNotSpecify"}, 1, size (img, 4))}, "quality", 75, "delaytime", ones (1, size (img, 4)) *500, # 0.5 seconds "loopcount", 0, ## this is actually Inf @@ -84,6 +85,30 @@ param_list{idx}); endif + case "disposalmethod" + options.disposalmethod = param_list{idx+1}; + if (! ischar (options.disposalmethod) && + ! iscellstr (options.disposalmethod)) + error ("imwrite: value for %s must be a string or cell array of strings", + param_list{idx}); + elseif (! iscell (options.disposalmethod)) + options.disposalmethod = {options.disposalmethod}; + endif + options.disposalmethod = tolower (options.disposalmethod); + matches = ismember (options.disposalmethod, + {"donotspecify", "leaveinplace", "restorebg", "restoreprevious"}); + if (any (! matches)) + error ("imwrite: unknow method %s for option %s", + options.disposalmethod{find (! matches, 1)}, + param_list{idx}); + endif + if (isscalar (options.disposalmethod)) + options.disposalmethod = repmat (options.disposalmethod, 1, size (img, 4)); + elseif (numel (options.disposalmethod) != size (img, 4)) + error ("imwrite: if value %s is a cell array must have same length as number of frames", + param_list{idx}); + endif + case "loopcount" options.loopcount = param_list{idx+1}; if (! isscalar (options.loopcount) || ! isnumeric (options.loopcount)