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First working version of resize
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alpine9000
@@ -0,0 +1,65 @@
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resize
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======
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Nicely resize images
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usage
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-----
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```
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rezize: --input <input.png> --output <output.png> --width <width> --height <height>
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options:
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--blur <blur>
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--interlaced
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--verbose
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```
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resize will resize images using filtering to try and make the resampled output still look good. It currently is hard coded to use a BesselFilter. Although by hacking the source you could use any of these filters:
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* BoxFilter
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* TriangleFilter
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* HermiteFilter
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* HanningFilter
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* HammingFilter
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* BlackmanFilter
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* GaussianFilter
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* QuadraticFilter
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* CubicFilter
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* CatromFilter
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* MitchellFilter
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* LanczosFilter
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* BesselFilter
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* SincFilter
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mandatory arguments
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-------------------
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**--input** <input.png>
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Specify the filename of the image to be resized.
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**--output** <output.png>
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Specify the filename of the resized image file.
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**--width** <width>
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Specify the new width in pixels.
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**--height** <height>
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Specify the new height in pixels.
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options
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-------
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**--interlaced**
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Generated output suitable for an interlaced display. The aspect ratio will be adjusted for double the vertical resolution. Specify the dimensions of the bitplane data (eg --width=320 --height=512).
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**--blur** <blur>
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Specify the blur factor to be applied. 0 is no blur. 0.75 looks good for most reductions.
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**--verbose**
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Display debugging information
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+149
-60
@@ -4,59 +4,162 @@
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#include <time.h>
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#include <sys/types.h>
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#include <magick/api.h>
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#include <getopt.h>
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typedef struct {
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int verbose;
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int width;
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int height;
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int interlaced;
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float blur;
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char** argv;
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} config_t;
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typedef struct {
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Image *image;
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Image *resizeImage;
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Image *croppedImage;
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ImageInfo *imageInfo;
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} image_t;
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image_t image = {0};
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config_t config = {.blur = 0.75};
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void
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cleanup()
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{
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if (image.image != (Image *) NULL) {
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DestroyImage(image.image);
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}
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if (image.resizeImage != (Image *)NULL) {
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DestroyImage(image.resizeImage);
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}
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if (image.croppedImage != (Image *)NULL) {
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DestroyImage(image.croppedImage);
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}
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if (image.imageInfo != (ImageInfo *) NULL) {
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DestroyImageInfo(image.imageInfo);
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}
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DestroyMagick();
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}
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void
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abort_(const char * s, ...)
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{
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fprintf(stderr, "%s: ", config.argv[0]);
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va_list args;
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va_start(args, s);
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vfprintf(stderr, s, args);
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fprintf(stderr, "\n");
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va_end(args);
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cleanup();
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exit(1);
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}
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void
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usage()
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{
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fprintf(stderr,
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"%s: --input <input.png> --output <output.png> --width <width> --height <height> \n"\
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"options:\n"\
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" --blur <blur>\n"\
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" --interlaced\n"\
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" --verbose\n", config.argv[0]);
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exit(1);
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}
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int
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main(int argc, char **argv)
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{
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Image *image = 0, *resizeImage = 0, *croppedImage = 0;
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char infile[MaxTextExtent];
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char outfile[MaxTextExtent];
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int arg = 1, exit_status = 0;
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ImageInfo *imageInfo;
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int c;
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char* inputFile = 0;
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char* outputFile = 0;
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ExceptionInfo exception;
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config.argv = argv;
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InitializeMagick(NULL);
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imageInfo=CloneImageInfo(0);
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image.imageInfo=CloneImageInfo(0);
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GetExceptionInfo(&exception);
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#if 0
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const int targetWidth = 320;
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const int targetHeight = 256;
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const int interlaced = 0;
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const float blur = 0.75;
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#else
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const int targetWidth = 320;
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const int targetHeight = 512;
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const int interlaced = 1;
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const float blur = 0.75;
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#endif
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while (1) {
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static struct option long_options[] = {
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{"verbose", no_argument, &config.verbose, 1},
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{"interlaced", no_argument, &config.interlaced, 1},
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{"width", required_argument, 0, 'w'},
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{"height", required_argument, 0, 'h'},
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{"blur", required_argument, 0, 'b'},
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{"output", required_argument, 0, 'o'},
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{"input", required_argument, 0, 'i'},
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{0, 0, 0, 0}
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};
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int option_index = 0;
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c = getopt_long (argc, argv, "o:i:w:h:b:", long_options, &option_index);
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if (c == -1)
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break;
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switch (c) {
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case 0:
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break;
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case 'i':
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inputFile = optarg;
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break;
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case 'o':
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outputFile = optarg;
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break;
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case 'w':
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if (sscanf(optarg, "%d", &config.width) != 1) {
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abort_("invalid width");
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}
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break;
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case 'h':
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if (sscanf(optarg, "%d", &config.height) != 1) {
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abort_("invalid height");
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}
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break;
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case 'b':
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if (sscanf(optarg, "%f", &config.blur) != 1) {
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abort_("invalid height");
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}
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break;
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case '?':
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usage();
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break;
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default:
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usage();
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break;
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}
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}
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if (argc != 3) {
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(void) fprintf ( stderr, "Usage: %s infile outfile\n", argv[0] );
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(void) fflush(stderr);
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exit_status = 1;
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goto program_exit;
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if (inputFile == 0 || outputFile == 0 || config.width == 0 || config.height == 0) {
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usage();
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abort();
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}
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(void) strncpy(infile, argv[arg], MaxTextExtent-1 );
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arg++;
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(void) strncpy(outfile, argv[arg], MaxTextExtent-1 );
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(void) strcpy(imageInfo->filename, infile);
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image = ReadImage(imageInfo, &exception);
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if (image == (Image *) NULL) {
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(void) strcpy(image.imageInfo->filename, inputFile);
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image.image = ReadImage(image.imageInfo, &exception);
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if (image.image == (Image *) NULL) {
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CatchException(&exception);
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exit_status = 1;
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goto program_exit;
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abort_("Failed to read image %s\n", inputFile);
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}
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int width = image->columns;
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int height = image->rows;
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int width = image.image->columns;
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int height = image.image->rows;
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float scale = (float)height/(float)targetHeight;
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float scale = (float)height/(float)config.height;
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int newWidth = width/scale;
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resizeImage=ResizeImage(image, newWidth/(interlaced?2:1), targetHeight,
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image.resizeImage=ResizeImage(image.image, newWidth/(config.interlaced?2:1), config.height,
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//GaussianFilter,
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//BoxFilter,
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//TriangleFilter,
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@@ -72,39 +175,25 @@ main(int argc, char **argv)
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//LanczosFilter,
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BesselFilter,
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//SincFilter,
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blur, &exception);
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config.blur, &exception);
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RectangleInfo rect = {
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.x = ((newWidth/(interlaced?2:1))-targetWidth)/2,
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.x = ((newWidth/(config.interlaced?2:1))-config.width)/2,
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.y = 0,
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.width = targetWidth,
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.height = targetHeight
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.width = config.width,
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.height = config.height
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};
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croppedImage = CropImage(resizeImage, &rect, &exception);
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image.croppedImage = CropImage(image.resizeImage, &rect, &exception);
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(void) strcpy(croppedImage->filename, outfile);
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if (!WriteImage (imageInfo, croppedImage))
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{
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CatchException(&croppedImage->exception);
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exit_status = 1;
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goto program_exit;
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}
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strcpy(image.croppedImage->filename, outputFile);
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program_exit:
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if (!WriteImage(image.imageInfo, image.croppedImage)) {
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CatchException(&image.croppedImage->exception);
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abort_("Failed to write image %d\n", outputFile);
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}
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if (image != (Image *) NULL)
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DestroyImage(image);
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cleanup();
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if (resizeImage != (Image *)NULL)
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DestroyImage(resizeImage);
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if (croppedImage != (Image *)NULL)
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DestroyImage(croppedImage);
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if (imageInfo != (ImageInfo *) NULL)
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DestroyImageInfo(imageInfo);
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DestroyMagick();
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return exit_status;
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return 0;
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}
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