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authorscuri <scuri>2009-06-26 17:14:56 +0000
committerscuri <scuri>2009-06-26 17:14:56 +0000
commit193cd3427108bd127e09f391f7fe51f6b62590e9 (patch)
tree7dfd83dec634c15f87f578266f6fdb0df046613a /html/examples/im_info.cpp
parent734afa90c3dda1232e9490d08346be4f2ffefec1 (diff)
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Diffstat (limited to 'html/examples/im_info.cpp')
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diff --git a/html/examples/im_info.cpp b/html/examples/im_info.cpp
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+/* IM 3 sample that returns information about a file.
+
+ Needs "im.lib".
+
+ Usage: im_info <file_name>
+
+ Example: im_info test.tif
+*/
+
+#include <im.h>
+#include <im_util.h>
+#include <im_binfile.h>
+#include <im_format_jp2.h>
+#include <im_format_avi.h>
+#include <im_format_wmv.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <memory.h>
+
+void PrintError(int error)
+{
+ switch (error)
+ {
+ case IM_ERR_OPEN:
+ printf("Error Opening File.\n");
+ break;
+ case IM_ERR_MEM:
+ printf("Insuficient memory.\n");
+ break;
+ case IM_ERR_ACCESS:
+ printf("Error Accessing File.\n");
+ break;
+ case IM_ERR_DATA:
+ printf("Image type not Suported.\n");
+ break;
+ case IM_ERR_FORMAT:
+ printf("Invalid Format.\n");
+ break;
+ case IM_ERR_COMPRESS:
+ printf("Invalid or unsupported compression.\n");
+ break;
+ default:
+ printf("Unknown Error.\n");
+ }
+}
+
+int FindZero(imbyte* data, int count)
+{
+ for (int i = 0; i < count; i++)
+ {
+ if (data[i] == 0)
+ return 1;
+ }
+ return 0;
+}
+
+char* AttribData2Str(const void* data, int data_type)
+{
+ static char data_str[50] = "";
+
+ switch(data_type)
+ {
+ case IM_BYTE:
+ sprintf(data_str, "%3d", (int)(*((imbyte*)data)));
+ break;
+ case IM_USHORT:
+ sprintf(data_str, "%5d", (int)(*((imushort*)data)));
+ break;
+ case IM_INT:
+ sprintf(data_str, "%5d", *((int*)data));
+ break;
+ case IM_FLOAT:
+ sprintf(data_str, "%5.2f", (double)(*((float*)data)));
+ break;
+ case IM_CFLOAT:
+ {
+ float *c = (float*)data;
+ sprintf(data_str, "%5.2g, %5.2f", (double)*c, (double)*(c+1));
+ }
+ break;
+ }
+
+ return data_str;
+}
+
+char* GetSizeDesc(double *size)
+{
+ char* size_desc;
+
+ if (*size < 1024)
+ size_desc = "b";
+ else
+ {
+ *size /= 1024;
+
+ if (*size < 1024)
+ size_desc = "Kb";
+ else
+ {
+ *size /= 1024;
+ size_desc = "Mb";
+ }
+ }
+
+ return size_desc;
+}
+
+unsigned long FileSize(const char* file_name)
+{
+ imBinFile* bfile = imBinFileOpen(file_name);
+ if (!bfile) return 0;
+
+ unsigned long file_size = imBinFileSize(bfile);
+
+ imBinFileClose(bfile);
+ return file_size;
+}
+
+void PrintImageInfo(const char* file_name)
+{
+ printf("IM Info\n");
+ printf(" File Name:\n %s\n", file_name);
+
+ int error;
+ imFile* ifile = imFileOpen(file_name, &error);
+ if (!ifile)
+ {
+ PrintError(error);
+ return;
+ }
+
+ double file_size = FileSize(file_name);
+ printf(" File Size: %.2f %s\n", file_size, GetSizeDesc(&file_size));
+
+ char format[10];
+ char compression[20];
+ int image_count;
+ imFileGetInfo(ifile, format, compression, &image_count);
+
+ char format_desc[50];
+ imFormatInfo(format, format_desc, NULL, NULL);
+ printf(" Format: %s - %s\n", format, format_desc);
+ printf(" Compression: %s\n", compression);
+ printf(" Image Count: %d\n", image_count);
+
+ for (int i = 0; i < image_count; i++)
+ {
+ int width, height, color_mode, data_type;
+
+ error = imFileReadImageInfo(ifile, i, &width, &height, &color_mode, &data_type);
+ if (error != IM_ERR_NONE)
+ {
+ PrintError(error);
+ imFileClose(ifile);
+ return;
+ }
+
+ printf(" Image #%d\n", i);
+ printf(" Width: %d\n", width);
+ printf(" Height: %d\n", height);
+ printf(" Color Space: %s\n", imColorModeSpaceName(color_mode));
+ printf(" Has Alpha: %s\n", imColorModeHasAlpha(color_mode)? "Yes": "No");
+ printf(" Is Packed: %s\n", imColorModeIsPacked(color_mode)? "Yes": "No");
+ printf(" Is Top Down: %s\n", imColorModeIsTopDown(color_mode)? "Yes": "No");
+ printf(" Data Type: %s\n", imDataTypeName(data_type));
+
+ double image_size = imImageDataSize(width, height, color_mode, data_type);
+ printf(" Data Size: %.2f %s\n", image_size, GetSizeDesc(&image_size));
+
+ char* attrib_list[50]; // should be dynamic allocated
+ int attrib_list_count;
+ imFileGetAttributeList(ifile, attrib_list, &attrib_list_count);
+
+ for (int a = 0; a < attrib_list_count; a++)
+ {
+ if (a == 0)
+ printf(" Attributes:\n");
+
+ int attrib_data_type, attrib_count;
+ const void* attrib_data = imFileGetAttribute(ifile, attrib_list[a], &attrib_data_type, &attrib_count);
+
+ if (attrib_count == 1)
+ printf(" %s: %s\n", attrib_list[a], AttribData2Str(attrib_data, attrib_data_type));
+ else if (attrib_data_type == IM_BYTE && FindZero((imbyte*)attrib_data, attrib_count))
+ printf(" %s: %s\n", attrib_list[a], attrib_data);
+ else
+ printf(" %s: %s %s ...\n", attrib_list[a], AttribData2Str(attrib_data, attrib_data_type), AttribData2Str((imbyte*)attrib_data + imDataTypeSize(attrib_data_type), attrib_data_type));
+ }
+ }
+
+ imFileClose(ifile);
+}
+
+int main(int argc, char* argv[])
+{
+// imFormatRegisterJP2();
+// imFormatRegisterAVI();
+// imFormatRegisterWMV();
+
+ if (argc < 2)
+ {
+ printf("Invalid number of arguments.\n");
+ return 0;
+ }
+
+ PrintImageInfo(argv[1]);
+
+ return 1;
+}
+