apps/hosted/notification.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 Thomas Martitz
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include <jni.h>
  23 #include <stdio.h>
  24 #include "notification.h"
  25 #include "appevents.h"
  26 #include "metadata.h"
  27 #include "misc.h"
  28
  29 extern JNIEnv *env_ptr;
  30 extern jclass RockboxService_class;
  31 extern jobject RockboxService_instance;
  32
  33 static jmethodID updateNotification, finishNotification;
  34 static jobject NotificationManager_instance;
  35 static jstring title, artist, album;
  36
  37 #define NZV(a) (a && a[0])
  38
  39 /*
  40  * notify about track change, and show track info */
  41 static void track_changed_callback(void *param)
  42 {
  43     struct mp3entry* id3 = (struct mp3entry*)param;
  44     JNIEnv e = *env_ptr;
  45     if (id3)
  46     {
  47         /* passing NULL to DeleteLocalRef() is OK */
  48         e->DeleteLocalRef(env_ptr, title);
  49         e->DeleteLocalRef(env_ptr, artist);
  50         e->DeleteLocalRef(env_ptr, album);
  51
  52         char buf[200];
  53         const char * ptitle = id3->title;
  54         if (!ptitle)
  55         {   /* pass the filename as title if id3 info isn't available */
  56             ptitle =
  57                 strip_extension(buf, sizeof(buf), strrchr(id3->path,'/') + 1);
  58         }
  59
  60         title = e->NewStringUTF(env_ptr, ptitle);
  61         artist = e->NewStringUTF(env_ptr, id3->artist ?: "");
  62         album = e->NewStringUTF(env_ptr, id3->album ?: "");
  63
  64         e->CallVoidMethod(env_ptr, NotificationManager_instance,
  65                       updateNotification, title, artist, album);
  66     }
  67 }
  68
  69 /*
  70  * notify about track finishing */
  71 static void track_finished_callback(void *param)
  72 {
  73     (void)param;
  74     JNIEnv e = *env_ptr;
  75     e->CallVoidMethod(env_ptr, NotificationManager_instance,
  76                       finishNotification);
  77 }
  78
  79 void notification_init(void)
  80 {
  81     JNIEnv e = *env_ptr;
  82     jfieldID nNM = e->GetFieldID(env_ptr, RockboxService_class,
  83                     "fg_runner", "Lorg/rockbox/Helper/RunForegroundManager;");
  84     NotificationManager_instance = e->GetObjectField(env_ptr,
  85                                                 RockboxService_instance, nNM);
  86     if (NotificationManager_instance == NULL)
  87     {
  88         DEBUGF("Failed to get RunForegroundManager instance. Performance will be bad");
  89         return;
  90     }
  91
  92     jclass class = e->GetObjectClass(env_ptr, NotificationManager_instance);
  93     updateNotification = e->GetMethodID(env_ptr, class, "updateNotification",
  94                                          "(Ljava/lang/String;"
  95                                          "Ljava/lang/String;"
  96                                          "Ljava/lang/String;)V");
  97     finishNotification = e->GetMethodID(env_ptr, class, "finishNotification",
  98                                         "()V");
  99
 100     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, track_changed_callback);
 101     add_event(PLAYBACK_EVENT_TRACK_FINISH, false, track_finished_callback);
 102 }