firmware/target/hosted/android/button-android.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
  23 #include <jni.h>
  24 #include <stdbool.h>
  25 #include "button.h"
  26 #include "buttonmap.h"
  27 #include "config.h"
  28 #include "kernel.h"
  29 #include "system.h"
  30 #include "touchscreen.h"
  31 #include "powermgmt.h"
  32
  33 extern JNIEnv *env_ptr;
  34 extern jclass  RockboxService_class;
  35 extern jobject RockboxService_instance;
  36
  37 static int last_y, last_x;
  38 static int last_btns;
  39
  40 static enum {
  41     STATE_UNKNOWN,
  42     STATE_UP,
  43     STATE_DOWN,
  44 } last_touch_state = STATE_UNKNOWN;
  45
  46 /*
  47  * this notifies us in an interrupt-like fashion whether the user just
  48  * began or stopped the touch action + where (pixel coordinates) */
  49 JNIEXPORT void JNICALL
  50 Java_org_rockbox_RockboxFramebuffer_touchHandler(JNIEnv*env, jobject this,
  51                                                  jboolean down, jint x, jint y)
  52 {
  53     (void)env;
  54     (void)this;
  55
  56     if (down)
  57         last_touch_state = STATE_DOWN;
  58     else
  59         last_touch_state = STATE_UP;
  60
  61     last_x = x;
  62     last_y = y;
  63 }
  64
  65 /*
  66  * this writes in an interrupt-like fashion the button events that the user
  67  * generated by pressing/releasing them to a variable */
  68 JNIEXPORT bool JNICALL
  69 Java_org_rockbox_RockboxFramebuffer_buttonHandler(JNIEnv*env, jclass class,
  70                                                   jint keycode, jboolean state)
  71 {
  72     (void)env;
  73     (void)class;
  74
  75     unsigned button = 0;
  76
  77     if (!state)
  78     {
  79         button = multimedia_to_button((int)keycode);
  80         if (!button)
  81             button = dpad_to_button((int)keycode);
  82         if (button)
  83         {
  84             reset_poweroff_timer();
  85             queue_post(&button_queue, button, 0);
  86             return true;
  87         }
  88     }
  89
  90     if (!button)
  91     {
  92         button = key_to_button(keycode);
  93     }
  94
  95     if (button == BUTTON_NONE)
  96     {
  97         last_btns = button;
  98         return false;
  99     }
 100
 101     if (state)
 102     {
 103         last_btns |= button;
 104     }
 105     else
 106     {
 107         last_btns &= (~button);
 108         return false;
 109     }
 110
 111     return true;
 112 }
 113
 114 void button_init_device(void)
 115 {
 116     JNIEnv e = *env_ptr;
 117     jclass class = e->FindClass(env_ptr, "org/rockbox/monitors/HeadphoneMonitor");
 118     jmethodID constructor =     e->GetMethodID(env_ptr, class,
 119                                                 "<init>",
 120                                                 "(Landroid/content/Context;)V");
 121     e->NewObject(env_ptr, class,
 122                         constructor,
 123                         RockboxService_instance);
 124 }
 125
 126 int button_read_device(int *data)
 127 {
 128     int btn = last_btns;
 129     /* Get grid button/coordinates based on the current touchscreen mode
 130      *
 131      * Caveat: the caller seemingly depends on *data always being filled with
 132      *         the last known touchscreen position, so always call
 133      *         touchscreen_to_pixels() */
 134     int touch = touchscreen_to_pixels(last_x, last_y, data);
 135
 136     if (last_touch_state == STATE_DOWN)
 137         btn |= touch;
 138
 139     return btn;
 140 }
 141
 142 static int hp_state;
 143 JNIEXPORT void JNICALL
 144 Java_org_rockbox_monitors_HeadphoneMonitor_postHpStateChanged(JNIEnv *env,
 145                                                             jobject this,
 146                                                             jint state)
 147 {
 148     (void)env; (void)this;
 149     hp_state = state;
 150 }
 151 /* Tell if anything is in the jack.
 152  *
 153  * since this is called from the tick task, which isn't attached to
 154  * the dalvik VM, it's not permitted to make JNI calls (therefore
 155  * we need the above callback) */
 156 bool headphones_inserted(void)
 157 {
 158     /* 0 is disconnected, 1 and 2 are connected */
 159     return (hp_state == 0) ? false : true;
 160 }
 161