From 3f355fe5888dbe534f95cb3bbe79bcb6315a87f5 Mon Sep 17 00:00:00 2001
From: jcsjcs <jcsjcs@f01d2545-417e-4e96-918e-98f8d0dbbcb6>
Date: Fri, 27 Apr 2007 14:09:59 +0000
Subject: 	* docs/reference/tmpl/device.sgml 	 
 docs/reference/tmpl/itunesdb-time.sgml 	 
 docs/reference/tmpl/libgpod-unused.sgml 	 
 docs/reference/tmpl/track.sgml 	  src/db-artwork-parser.c 	 
 src/db-artwork-writer.c 	  src/db-itunes-parser.h 	  src/itdb.h 
   src/itdb_device.c 	  src/itdb_device.h 	  src/itdb_itunesdb.c 	 
 src/itdb_private.h 	  tests/Makefile.am:

	  Christophe's patch for automatic correction of timestamps
	  depending on which timezone the iPod is set to.

	  ATTENTION DEVELOPERS: as a consequence all exported timestamps
	  are no longer guint32 mac-type timestamps but standard time_t
	  timestamps. This also includes the 64 bit timestamps in smart
	  playlists. The following functions are therefore no longer
	  needed and are deprecated:

	  itdb_time_mac_to_host(), itdb_time_host_to_mac(): simply return
	  the argument without changing it. Argument and return value are
	  now both of type 'time_t'.

	  itunesdb_time_get_mac_time(): returns the seconds passed since
	  Epoch in seconds and is equivalent to time(NULL).

	  These functions may be removed in a future version of
	  libgpod. Programs linking to libgpod may need to be changed
	  slightly if they made any assumptions on the type of timestamps
	  used. This should be obvious through compile-time warnings.

	  tests/test-ls.c: print a list of recently played tracks.


git-svn-id: https://gtkpod.svn.sf.net/svnroot/gtkpod/libgpod/trunk@1417 f01d2545-417e-4e96-918e-98f8d0dbbcb6
---
 src/itdb_device.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 76 insertions(+), 4 deletions(-)

(limited to 'src/itdb_device.c')

diff --git a/src/itdb_device.c b/src/itdb_device.c
index 35836fb..8c5b9fb 100644
--- a/src/itdb_device.c
+++ b/src/itdb_device.c
@@ -1,6 +1,5 @@
-/* Time-stamp: <27-mar-2007 10:09:48 teuf>
-|
-|  Copyright (C) 2002-2005 Jorg Schuler <jcsjcs at users sourceforge net>
+/*
+|  Copyright (C) 2002-2007 Jorg Schuler <jcsjcs at users sourceforge net>
 |  Part of the gtkpod project.
 | 
 |  URL: http://www.gtkpod.org/
@@ -268,6 +267,8 @@ static const Itdb_ArtworkFormat *ipod_artwork_info_table[] = {
 };
 
 
+static void itdb_device_set_timezone_info (Itdb_Device *device);
+
 /* Reset or create the SysInfo hash table */
 static void itdb_device_reset_sysinfo (Itdb_Device *device)
 {
@@ -328,8 +329,10 @@ void itdb_device_set_mountpoint (Itdb_Device *device, const gchar *mp)
 
     g_free (device->mountpoint);
     device->mountpoint = g_strdup (mp);
-    if (mp)
+    if (mp) {
 	itdb_device_read_sysinfo (device);
+        itdb_device_set_timezone_info (device);
+    }
 }
 
 
@@ -834,3 +837,72 @@ gboolean itdb_device_supports_photo (Itdb_Device *device)
     
     return (it->type != -1);
 }
+
+
+/* This function reads the timezone information from the iPod and sets it in
+ * the Itdb_Device structure. If an error occurs, the function returns silently
+ * and the timezone shift is set to 0
+ */
+static void itdb_device_set_timezone_info (Itdb_Device *device)
+{
+    const gchar *p_preferences[] = {"Preferences", NULL};
+    char *dev_path;
+    char *prefs_filename;
+    FILE *f;
+    gint32 timezone;
+    const int GMT_OFFSET = 0x19;
+    int result;
+
+    device->timezone_shift = 0;
+
+    if (device->mountpoint == NULL) {
+        /* Assumes the iPod is in the UTC timezone for those cases */
+        return;
+    }
+
+    dev_path = itdb_get_device_dir (device->mountpoint);
+
+    if (dev_path == NULL) {
+        return ;
+    }
+
+    prefs_filename = itdb_resolve_path (dev_path, p_preferences);
+    g_free (dev_path);
+
+    f = fopen (prefs_filename, "r");
+    if (f == NULL) {
+        g_free (prefs_filename);
+        return;
+    }
+
+    result = fseek (f, 0xB10, SEEK_SET);
+    if (result != 0) {
+        fclose (f);
+        g_free (prefs_filename);
+        return;
+    }
+
+    result = fread (&timezone, sizeof (timezone), 1, f);
+    if (result != 1) {
+        fclose (f);
+        g_free (prefs_filename);
+        return;
+    }
+
+    fclose (f);
+    g_free (prefs_filename);
+
+    timezone = GINT32_FROM_LE (timezone);
+    if ((timezone < 0) || (timezone > (2*12) << 1)) {
+        /* invalid timezone */
+        return;
+    }
+
+    timezone -= GMT_OFFSET;
+
+    device->timezone_shift = (timezone >> 1) * 3600;
+    if (timezone & 1) {
+        /* Adjust for DST */
+        device->timezone_shift += 3600;
+    }
+}
-- 
cgit