Patch #4899 by Robert Keevil - Automatic pause on iPod when removing the headphones

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11057 a1c6a512-1295-4272-9138-f99709370657

apps/codecs.c

@@ -218,6 +218,7 @@ struct codec_api ci = {
     enc_wavbuf_near_empty,
     enc_get_wav_data,
     &enc_set_header_callback,
+    44100,
 #endif
 
     /* new stuff at the end, sort into place next time

apps/codecs.h

@@ -303,6 +303,7 @@ struct codec_api {
     char*         (*enc_get_wav_data)(int size);
     void          (**enc_set_header_callback)(void *head_buffer,
                     int head_size, int num_samples, bool is_file_header);
+    int sample_rate;
 #endif
 
     /* new stuff at the end, sort into place next time

apps/lang/english.lang

@@ -9806,3 +9806,59 @@
     *: ""
   </voice>
 </phrase>
+<phrase>
+  id: LANG_UNPLUG
+  desc: in settings_menu.
+  user:
+  <source>
+    *: "Pause on headphone unplug"
+  </source>
+  <dest>
+    *: "Pause on headphone unplug"
+  </dest>
+  <voice>
+    *: "Pause on headphone unplug"
+  </voice>
+</phrase>
+<phrase>
+  id: LANG_UNPLUG_RESUME
+  desc: in pause_phones_menu.
+  user:
+  <source>
+    *: "Pause and Resume"
+  </source>
+  <dest>
+    *: "Pause and Resume"
+  </dest>
+  <voice>
+    *: "Pause and Resume"
+  </voice>
+</phrase>
+<phrase>
+  id: LANG_UNPLUG_RW
+  desc: in pause_phones_menu.
+  user:
+  <source>
+    *: "Duration to rewind"
+  </source>
+  <dest>
+    *: "Duration to rewind"
+  </dest>
+  <voice>
+    *: "Duration to rewind"
+  </voice>
+</phrase>
+<phrase>
+  id: LANG_UNPLUG_DISABLE_AUTORESUME
+  desc: in pause_phones_menu.
+  user:
+  <source>
+    *: "Disable auto-resume if phones not present"
+  </source>
+  <dest>
+    *: "Disable auto-resume if phones not present"
+  </dest>
+  <voice>
+    *: "Disable auto-resume if phones not present"
+  </voice>
+</phrase>

apps/misc.c

@@ -580,6 +580,33 @@ void car_adapter_mode_init(void)
 }
 #endif
 
+#ifdef HAVE_HEADPHONE_DETECTION
+void unplug_change(bool inserted)
+{
+    if (global_settings.unplug_mode)
+    {
+        if (inserted)
+        {
+            if ( global_settings.unplug_mode > 1 )
+                audio_resume();
+            backlight_on();
+        } else {
+            audio_pause();
+
+            if (global_settings.unplug_rw)
+            {
+                if ( audio_current_track()->elapsed >
+                (unsigned long)(global_settings.unplug_rw*1000))
+                    audio_ff_rewind(audio_current_track()->elapsed -
+                    (global_settings.unplug_rw*1000));
+                else
+                    audio_ff_rewind(0);
+            }
+        }
+    }
+}
+#endif
+
 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 {
     switch(event)
@@ -608,6 +635,15 @@ long default_event_handler_ex(long event, void (*callback)(void *), void *parame
         case SYS_CHARGER_DISCONNECTED:
             car_adapter_mode_processing(false);
             return SYS_CHARGER_DISCONNECTED;
+#endif
+#ifdef HAVE_HEADPHONE_DETECTION
+        case SYS_PHONE_PLUGGED:
+            unplug_change(true);
+            return SYS_PHONE_PLUGGED;
+
+        case SYS_PHONE_UNPLUGGED:
+            unplug_change(false);
+            return SYS_PHONE_UNPLUGGED;
 #endif
     }
     return 0;

apps/settings.c

@@ -655,6 +655,12 @@ static const struct bit_entry hd_bits[] =
 #endif
 #endif
 
+#ifdef HAVE_HEADPHONE_DETECTION
+    {2, S_O(unplug_mode), 0, "pause on headphone unplug", NULL},
+    {4, S_O(unplug_rw), 0, "rewind duration on pause", NULL},
+    {1, S_O(unplug_autoresume), 0, "disable autoresume if phones not present", off_on },
+#endif
+
     /* If values are just added to the end, no need to bump the version. */
     /* new stuff to be added at the end */
 

apps/settings.h

@@ -486,6 +486,12 @@ struct user_settings
 #endif
     bool hold_lr_for_scroll_in_list; /* hold L/R scrolls the list left/right */
     int show_path_in_browser; /* 0=off, 1=current directory, 2=full path */
+
+#ifdef HAVE_HEADPHONE_DETECTION
+    int unplug_mode; /* pause on headphone unplug */
+    int unplug_rw; /* time in s to rewind when pausing */
+    bool unplug_autoresume; /* disable auto-resume if no phones */
+#endif
 };
 
 enum optiontype { INT, BOOL };

apps/settings_menu.c

@@ -1664,6 +1664,57 @@ static bool tagcache_settings_menu(void)
     return result;
 }
 
+#ifdef HAVE_HEADPHONE_DETECTION
+static bool unplug_mode(void)
+{
+    static const struct opt_items names[] = {
+        { STR(LANG_OFF) },
+        { STR(LANG_PAUSE) },
+        { STR(LANG_UNPLUG_RESUME) },
+    };
+    bool ret;
+    ret=set_option( str(LANG_UNPLUG),
+                    &global_settings.unplug_mode, INT, names, 3, NULL);
+
+    return ret;
+}
+
+static bool unplug_rw(void)
+{
+    bool ret;
+
+    ret = set_int(str(LANG_UNPLUG_RW), "s", UNIT_SEC,
+                   &global_settings.unplug_rw,
+                   NULL, 1, 0, 15, NULL );
+    audio_set_crossfade(global_settings.unplug_rw);
+    return ret;
+}
+
+static bool unplug_autoresume(void)
+{
+    return set_bool( str(LANG_UNPLUG_DISABLE_AUTORESUME), 
+                    &global_settings.unplug_autoresume );
+}
+
+static bool unplug_menu(void)
+{
+    int m;
+    bool result;
+
+    static const struct menu_item items[] = {
+        { ID2P(LANG_UNPLUG), unplug_mode },
+        { ID2P(LANG_UNPLUG_RW), unplug_rw },
+        { ID2P(LANG_UNPLUG_DISABLE_AUTORESUME), unplug_autoresume },
+    };
+
+    m=menu_init( items, sizeof(items) / sizeof(*items), NULL,
+                 NULL, NULL, NULL);
+    result = menu_run(m);
+    menu_exit(m);
+    return result;
+}
+#endif
+
 static bool playback_settings_menu(void)
 {
     int m;
@@ -1687,7 +1738,10 @@ static bool playback_settings_menu(void)
         { ID2P(LANG_SPDIF_ENABLE), spdif },
 #endif
         { ID2P(LANG_ID3_ORDER), id3_order },
-        { ID2P(LANG_NEXT_FOLDER), next_folder }
+        { ID2P(LANG_NEXT_FOLDER), next_folder },
+#ifdef HAVE_HEADPHONE_DETECTION
+        { ID2P(LANG_UNPLUG), unplug_menu }
+#endif
     };
 
     bool old_shuffle = global_settings.playlist_shuffle;

apps/tree.c

@@ -466,7 +466,20 @@ static void start_resume(bool just_powered_on)
 
         /* always resume? */
         if ( global_settings.resume || ! just_powered_on)
-            do_resume = true;
+#ifdef HAVE_HEADPHONE_DETECTION
+        {
+            if ( just_powered_on )
+            {
+                if ( !global_settings.unplug_autoresume
+                    || headphones_inserted() )
+                    do_resume = true;
+            }
+            else
+                do_resume = true;
+        }
+#else
+             do_resume = true;
+#endif
 
         if (! do_resume) return;
 

firmware/drivers/button.c

@@ -92,6 +92,10 @@ static bool remote_button_hold_only(void);
 int int_btn = BUTTON_NONE;
 #endif
 
+#ifdef HAVE_HEADPHONE_DETECTION
+bool phones_present = false;
+#endif
+
 #if (CONFIG_KEYPAD == IPOD_4G_PAD) && !defined(IPOD_MINI)
 static void opto_i2c_init(void)
 {
@@ -433,6 +437,23 @@ static void button_tick(void)
     }
 #endif
 
+#ifdef HAVE_HEADPHONE_DETECTION
+    if ( headphones_inserted() )
+    {
+        if (! phones_present )
+        {
+            queue_post(&button_queue, SYS_PHONE_PLUGGED, NULL);
+            phones_present = true;
+        }
+    } else {
+        if ( phones_present )
+        {
+            queue_post(&button_queue, SYS_PHONE_UNPLUGGED, NULL);
+            phones_present = false;
+        }
+    }
+#endif
+
     btn = button_read();
 
     /* Find out if a key has been released */
@@ -1327,3 +1348,10 @@ void button_clear_queue(void)
     queue_clear(&button_queue);
 }
 
+#ifdef HAVE_HEADPHONE_DETECTION
+bool headphones_inserted(void)
+{
+    return (GPIOA_INPUT_VAL & 0x80)?true:false;
+}
+#endif
+

firmware/export/button.h

@@ -54,6 +54,9 @@ bool button_hold(void);
 #ifdef HAS_REMOTE_BUTTON_HOLD
 bool remote_button_hold(void);
 #endif
+#ifdef HAVE_HEADPHONE_DETECTION
+bool headphones_inserted(void);
+#endif
 
 
 #define  BUTTON_NONE        0x00000000

firmware/export/config-ipod4g.h

@@ -109,6 +109,9 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/* Define this if you can detect headphones */
+#define HAVE_HEADPHONE_DETECTION
+
 #define BOOTFILE_EXT "ipod"
 #define BOOTFILE "rockbox." BOOTFILE_EXT
 

firmware/export/config-ipodcolor.h

@@ -105,6 +105,9 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/* Define this if you can detect headphones */
+#define HAVE_HEADPHONE_DETECTION
+
 #define BOOTFILE_EXT "ipod"
 #define BOOTFILE "rockbox." BOOTFILE_EXT
 

firmware/export/config-ipodnano.h

@@ -110,6 +110,9 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/* Define this if you can detect headphones */
+#define HAVE_HEADPHONE_DETECTION
+
 #define BOOTFILE_EXT "ipod"
 #define BOOTFILE "rockbox." BOOTFILE_EXT
 

firmware/export/config-ipodvideo.h

@@ -110,6 +110,9 @@
 /* Define this if you have adjustable CPU frequency */
 #define HAVE_ADJUSTABLE_CPU_FREQ
 
+/* Define this if you can detect headphones */
+#define HAVE_HEADPHONE_DETECTION
+
 #define BOOTFILE_EXT "ipod"
 #define BOOTFILE "rockbox." BOOTFILE_EXT
 

firmware/export/kernel.h

@@ -46,6 +46,8 @@
 #define SYS_FS_CHANGED            ((SYS_EVENT | ((long)9 << 27)))
 #define SYS_CHARGER_CONNECTED     ((SYS_EVENT | ((long)10 << 27)))
 #define SYS_CHARGER_DISCONNECTED  ((SYS_EVENT | ((long)11 << 27)))
+#define SYS_PHONE_PLUGGED         ((SYS_EVENT | ((long)12 << 27)))
+#define SYS_PHONE_UNPLUGGED       ((SYS_EVENT | ((long)13 << 27)))
 
 struct event
 {