我已经决定使用下面的ImageMagick库为iPhone开发的批处理文件脚本转换成Objective-C的:iPhone ImageMagick库 - 使用MagickWand API
https://github.com/marforic/imagemagick_lib_iphone
它工作的很好。示例项目编译得很好,但没有任何意义。
通常,我将使用ImageMagick for Windows随附的“convert.exe”通过命令行转换图像。所以,我会写一点批处理文件类似如下:
@echo off
set SOURCE=image_to_convert.jpg
del result.jpg
del source_copy.jpg
convert.exe %SOURCE% -fill "#fff8f2" -colorize 100%% fill.jpg
copy %SOURCE% source_copy.jpg
convert.exe %SOURCE% -modulate 100,0,100 -|^
convert.exe - source_copy.jpg -compose overlay -composite -|^
convert.exe source_copy.jpg - -compose dissolve -define compose:args=37,100 -composite -|^
convert.exe - -modulate 100,70,100 +level 3.5%%,100%% -|^
convert.exe - -channel red -level 0%%,89%% +level 9%%,100%% -|^
convert.exe - -channel green +level 3.5%%,100%% -|^
convert.exe - -channel blue -level 0%%,93%% +level 4.7%%,100%% -|^
convert.exe - -brightness-contrast -5x3 -|^
convert.exe fill.jpg - -compose multiply -gravity center -composite -|^
convert.exe - -level 3.5%%,100%%,0.91 +level 2.7%%,100%% -|^
convert.exe - -channel red +level 3.5%%,100%% -|^
convert.exe - -channel green -level 0%%,87%% +level 1%%,100%% -|^
convert.exe - -channel blue -level 0%%,100%%,0.94 +level 7%%,100%% -|^
convert.exe - -brightness-contrast -1x0 final_converted_image.jpg
del source_copy.jpg
del fill.jpg
的问题是转换上面的批处理文件,旁边那个特定的库中使用。
- (void)convertImage {
MagickWandGenesis();
magick_wand = NewMagickWand();
//UIImageJPEGRepresentation([imageViewButton imageForState:UIControlStateNormal], 90);
NSData * dataObject = UIImagePNGRepresentation([UIImage imageNamed:@"iphone.png"]);
MagickBooleanType status;
status = MagickReadImageBlob(magick_wand, [dataObject bytes], [dataObject length]);
if (status == MagickFalse) {
ThrowWandException(magick_wand);
}
// Resize image.
ImageInfo *imageInfo = AcquireImageInfo();
ExceptionInfo *exceptionInfo = AcquireExceptionInfo();
// Get image from bundle.
char *input_image = strdup([[[NSBundle mainBundle] pathForResource:@"iphone" ofType:@"png"] UTF8String]);
char *output_image = strdup([[[NSBundle mainBundle] pathForResource:@"iphone" ofType:@"png"] UTF8String]);
char *argv[] = { "convert", input_image, "-resize", "100x100", output_image, NULL };
// ConvertImageCommand(ImageInfo *, int, char **, char **, MagickExceptionInfo *);
status = ConvertImageCommand(imageInfo, 5, argv, NULL, exceptionInfo);
free(input_image);
free(output_image);
if (status == MagickFalse) {
ThrowWandException(magick_wand); // Always throws an exception here...
}
size_t my_size;
unsigned char * my_image = MagickGetImageBlob(magick_wand, &my_size);
NSData * data = [[NSData alloc] initWithBytes:my_image length:my_size];
free(my_image);
magick_wand = DestroyMagickWand(magick_wand);
MagickWandTerminus();
UIImage * image = [[UIImage alloc] initWithData:data];
[data release];
[imageViewButton setImage:image forState:UIControlStateNormal];
[image release];
}
的问题是,status
总是MagickFalse
,这意味着它抛出异常。我也不确定我是否正确使用ConvertImageCommand()
。
任何帮助将不胜感激。提前致谢。
你有没有试过为参数计数传递5?什么是例外? – Joe