SD980 port - page 15 - DryOS Development - CHDK Forum
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SD980 port

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Offline RaduP

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Re: SD980 port
« Reply #140 on: 18 / October / 2009, 05:25:28 »
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You were right about stat()
It is the right function, but the structure changed.
I didn't get enough time to look for what the values are, but the 3rd int is the file size.
I'll attach a dump of that structure, if you feel like looking through it. I dumped 200 bytes, since I don't know exactly how long it is, but it is probably 24 bytes long.
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Offline reyalp

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Re: SD980 port
« Reply #141 on: 19 / October / 2009, 02:37:25 »
Quote from: RaduP on 18 / October / 2009, 05:25:28
You were right about stat()
It is the right function, but the structure changed.
I didn't get enough time to look for what the values are, but the 3rd int is the file size.
I'll attach a dump of that structure, if you feel like looking through it. I dumped 200 bytes, since I don't know exactly how long it is, but it is probably 24 bytes long.
I can't do anything with this without knowing the actual details of the file that was stat()ed.
I'd suggest stating at least one regular file and directory, and listing the size, creation/modification/access times and DOS attributes
If you make a couple of files with all these things set differently, that will make it easier.
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Offline RaduP

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Re: SD980 port
« Reply #142 on: 19 / October / 2009, 02:58:25 »
Ok, well, I got the most important fields, size and attributes. I think I got some times too, but right now I am debugging the file browser.
Speaking of which, can you please check if:
void gui_draw_fselect(int arg) {
    gui_fselect_init(LANG_STR_FILE_BROWSER, "A/", NULL);
}

works on the other cameras?
On the SD980 and possibly new cameras, the root dir is "A/" not "A". And if it works, can you please put that in the SVN so it will be ready for the SD980 port?
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Offline RaduP

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Re: SD980 port
« Reply #143 on: 19 / October / 2009, 04:00:22 »
Hmm, using "A/" instead of "A" will cause some problems later in the gui_fselect_read_dir() function because of: sprintf(buf, "%s/%s", dir, de->d_name); removing the / does help for the root dir, but it doesn't help with other dirs. I'll look more into it.
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Offline RaduP

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Re: SD980 port
« Reply #144 on: 19 / October / 2009, 04:18:43 »
Ok, I found a better way that gets the file browser working:
In static void gui_fselect_read_dir(const char* dir)
Instead of d = opendir(dir);

Code: [Select]
if(dir[0]=='A' && dir[1]==0)
d = opendir("A/");
else
    d = opendir(dir);
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Offline RaduP

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Re: SD980 port
« Reply #145 on: 19 / October / 2009, 05:24:29 »
Regarding stat(), here is the structure:

struct   stat
    {
    unsigned long   st_unknown_1;      //?
    unsigned long   st_attrib;
    unsigned long   st_size;   //?
    unsigned long   st_ctime;   //?
    unsigned long   st_mtime;   //?S
    unsigned long   st_unknown_2;   //?S
};
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Offline RaduP

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Re: SD980 port
« Reply #146 on: 19 / October / 2009, 05:30:02 »
LUA uses some other stat fields that I could not find:

loslib.c: In function `os_stat':
loslib.c:298: error: structure has no member named `st_dev'
loslib.c:300: error: structure has no member named `st_mode'
loslib.c:309: error: structure has no member named `st_atime'
loslib.c:331: error: structure has no member named `st_blksize'
loslib.c:332: error: structure has no member named `st_blocks'

Perhaps we need an #ifdef there as well.

Anyway, how do you suggest to call the #ifdef for stdlib.h for the new stat structure?
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Offline reyalp

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Re: SD980 port
« Reply #147 on: 19 / October / 2009, 19:51:53 »
You could also make your wrapper for stat shuffle the values around to fit the existing structure (and stuff sane values in any you haven't found ?)
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Offline RaduP

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Re: SD980 port
« Reply #148 on: 19 / October / 2009, 19:56:43 »
That's a possibility too, but I've noticed that there are two stat structures, one for DRYOS and one for VX, so to keep it consistent we'd need a 3rd structure, especially if all the new cameras are going to use this one.
And does LUA REALLY need those other fields?

if I do what you suggested, then everyone porting new cameras would need to use my code as a reference, or at least take my wrappers.

Also, did you check the "A" vs "A/" thing?
« Last Edit: 19 / October / 2009, 19:58:22 by RaduP »
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Offline reyalp

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Re: SD980 port
« Reply #149 on: 19 / October / 2009, 20:24:30 »
We'll need a new #ifdef for the "new style" cameras anyway. I don't know what to call it, but it doesn't matter too much, that's what global search/replace is for. CAM_DRYOS_2_3_R39 for now, if you can't think of something better.

I don't know that lua "needs" those extra fields, but I'm reluctant to remove something that already exists and works on current cameras.

I haven't tried A/ vs. A.  I wasn't clear from your post above whether this was still needed, or what else it affects. In any case, I only have a vxworks cam at the moment.
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