Re: [Libexif-devel] Mingw32 compile on Windows

[Gary L. <li...@lu...>]

Thanks, I've managed to get a library and test program as follows to 
compile. Two questions:

   1. I can see which tags exist in my test image, but how do I get at
      their values
   2. Is it straight-foward to build a DLL for this or am I better
      sticking with the library? If so how do I go about this?

(cc'd to the list as reference for others)

Gary

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>

#include <libexif/exif-data.h>
#include <libexif/exif-loader.h>
#include <libexif/exif-log.h>
#include <libexif/exif-ifd.h>

#define ENTRY_FOUND     "   *   "
#define ENTRY_NOT_FOUND "   -   "

void action_tag_table (const char *filename, ExifData *ed)
{
    unsigned int tag;
    const char *name;
    char txt[1024];
    unsigned int i;

    memset (txt, 0, sizeof (txt));
    sprintf (txt, "EXIF tags in '%s':", filename);
    fprintf (stdout, "%-38.38s", txt);
    for (i = 0; i < EXIF_IFD_COUNT; i++)
        fprintf (stdout, "%-7.7s", exif_ifd_get_name (i));
    fputc ('\n', stdout);
    for (tag = 0; tag < 0xffff; tag++) {
        name = exif_tag_get_title (tag);
        if (!name)
            continue;
        fprintf (stdout, "  0x%04x %-29.29s", tag, name);
        for (i = 0; i < EXIF_IFD_COUNT; i++)
            if (exif_content_get_entry (ed->ifd[i], tag))
                printf (ENTRY_FOUND);
            else
                printf (ENTRY_NOT_FOUND);
        fputc ('\n', stdout);
    }
}

int main(int argc, char *argv[])
{
            ExifLoader *l;
            ExifData *ed;

            char fname[] = "c:\\temp\\test.jpg";

            l = exif_loader_new ();
            exif_loader_write_file (l, fname);
            ed = exif_loader_get_data (l);
            exif_loader_unref (l);
            action_tag_table (fname, ed);

  system("PAUSE");   
  return 0;
}

Gary Lawton
http://www.garylawton.com



Antonio Scuri wrote:

>
>   I'm sending two files. I do not remember if the second one is 
> distributed with the sources or not.
>
>   The makefile is quite simple, using Dev-C++ just create an empty 
> project and add all the sources. I do not have a simple one because I 
> merged some libs together to build my own lib:
>
>      http://www.tecgraf.puc-rio.br/im
>
> Best,
> scuri
>
> At 05:23 10/03/04, you wrote:
>
>> Do you also have a suitable makefile (or how can I generate this)
>>
>> Thanks
>> Gary
>>
>> Gary Lawton
>> http://www.garylawton.com
>>
>>
>>
>> Antonio Scuri wrote:
>>
>>>
>>>   Hi,
>>>
>>>   I compile libexif in several platforms (including mingw) just 
>>> writing a proper "config.h" file. If you want I can send it to you.
>>>
>>> scuri
>>
>------------------------------------------------------------------------
>
>
>#ifndef __STDINT_H
>#define __STDINT_H
>
>#ifndef __int8_t_defined
>#define __int8_t_defined
>typedef signed char int8_t;
>typedef short int16_t;
>typedef long int32_t;
>#endif
>
>typedef unsigned char uint8_t;
>typedef unsigned short uint16_t;
>#ifndef __uint32_t_defined
>#define __uint32_t_defined
>typedef unsigned long uint32_t;
>#endif
>
>#endif 
>  
>
>------------------------------------------------------------------------
>
>
>/* Define to 1 if translation of program messages to the user's native
>   language is requested. */
>/* #undef ENABLE_NLS */
>
>/* The gettext domain we're using */
>#define GETTEXT_PACKAGE "libexif-9"
>
>#ifdef WIN32
>#define snprintf _snprintf
>#endif
>
>  
>