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 "albumart.h"
  28 #include "misc.h"
  29 #include "debug.h"
  30
  31 extern JNIEnv *env_ptr;
  32 extern jclass RockboxService_class;
  33 extern jobject RockboxService_instance;
  34
  35 static jmethodID updateNotification, finishNotification;
  36 static jobject NotificationManager_instance;
  37 static jstring title, artist, album, albumart;
  38
  39 /* completely arbitrary dimensions. neded for find_albumart() */
  40 static const struct dim dim = { .width = 200, .height = 200 };
  41 #define NZV(a) (a && a[0])
  42
  43 /*
  44  * notify about track change, and show track info */
  45 static void track_changed_callback(void *param)
  46 {
  47     struct mp3entry* id3 = (struct mp3entry*)param;
  48     JNIEnv e = *env_ptr;
  49     if (id3)
  50     {
  51         /* passing NULL to DeleteLocalRef() is OK */
  52         e->DeleteLocalRef(env_ptr, title);
  53         e->DeleteLocalRef(env_ptr, artist);
  54         e->DeleteLocalRef(env_ptr, album);
  55         e->DeleteLocalRef(env_ptr, albumart);
  56
  57         char buf[200];
  58         const char * ptitle = id3->title;
  59         if (!ptitle && *id3->path)
  60         {   /* pass the filename as title if id3 info isn't available */
  61             ptitle = strip_extension(buf, sizeof(buf), strrchr(id3->path,'/') + 1);
  62         }
  63
  64         title = e->NewStringUTF(env_ptr, ptitle ?: "");
  65         artist = e->NewStringUTF(env_ptr, id3->artist ?: "");
  66         album = e->NewStringUTF(env_ptr, id3->album ?: "");
  67
  68         albumart = NULL;
  69         if (find_albumart(id3, buf, sizeof(buf), &dim))
  70             albumart = e->NewStringUTF(env_ptr, buf);
  71
  72         e->CallVoidMethod(env_ptr, NotificationManager_instance,
  73                       updateNotification, title, artist, album, albumart);
  74     }
  75 }
  76
  77 /*
  78  * notify about track finishing */
  79 static void track_finished_callback(void *param)
  80 {
  81     (void)param;
  82     JNIEnv e = *env_ptr;
  83     e->CallVoidMethod(env_ptr, NotificationManager_instance,
  84                       finishNotification);
  85 }
  86
  87 void notification_init(void)
  88 {
  89     JNIEnv e = *env_ptr;
  90     jfieldID nNM = e->GetFieldID(env_ptr, RockboxService_class,
  91                     "fg_runner", "Lorg/rockbox/Helper/RunForegroundManager;");
  92     NotificationManager_instance = e->GetObjectField(env_ptr,
  93                                                 RockboxService_instance, nNM);
  94     if (NotificationManager_instance == NULL)
  95     {
  96         DEBUGF("Failed to get RunForegroundManager instance. Performance will be bad");
  97         return;
  98     }
  99
 100     jclass class = e->GetObjectClass(env_ptr, NotificationManager_instance);
 101     updateNotification = e->GetMethodID(env_ptr, class, "updateNotification",
 102                                          "(Ljava/lang/String;"
 103                                          "Ljava/lang/String;"
 104                                          "Ljava/lang/String;"
 105                                          "Ljava/lang/String;)V");
 106     finishNotification = e->GetMethodID(env_ptr, class, "finishNotification",
 107                                         "()V");
 108
 109     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, track_changed_callback);
 110     add_event(PLAYBACK_EVENT_TRACK_FINISH, false, track_finished_callback);
 111 }