iBasso DX50/DX90: Major code cleanup and reorganization.

Reorganization

- Separated iBasso devices from PLATFORM_ANDROID. These are now standlone
  hosted targets. Most device specific code is in the
  firmware/target/hosted/ibasso directory.
- No dependency on Android SDK, only the Android NDK is needed.
  32 bit Android NDK and Android API Level 16.
- Separate implementation for each device where feasible.

Code cleanup

- Rewrite of existing code, from simple reformat to complete reimplementation.
- New backlight interface, seperating backlight from touchscreen.
- Rewrite of device button handler, removing unneeded code and fixing memory
  leaks.
- New Debug messages interface logging to Android adb logcat (DEBUGF, panicf,
  logf).
- Rewrite of lcd device handler, removing unneeded code and fixing memory leaks.
- Rewrite of audiohw device handler/pcm interface, removing unneeded code and
  fixing memory leaks, enabling 44.1/48kHz pthreaded playback.
- Rewrite of power and powermng, proper shutdown, using batterylog results
  (see http://gerrit.rockbox.org/r/#/c/1047/).
- Rewrite of configure (Android NDK) and device specific config.
- Rewrite of the Android NDK specific Makefile.

Misc

- All plugins/games/demos activated.
- Update tinyalsa to latest from https://github.com/tinyalsa/tinyalsa.

Includes

- http://gerrit.rockbox.org/r/#/c/993/
- http://gerrit.rockbox.org/r/#/c/1010/
- http://gerrit.rockbox.org/r/#/c/1035/

Does not include http://gerrit.rockbox.org/r/#/c/1007/ due to new backlight
interface and new option for hold switch, touchscreen, physical button
interaction.

Rockbox needs the iBasso DX50/DX90 loader for startup, see
http://gerrit.rockbox.org/r/#/c/1099/

The loader expects Rockbox to be installed in /mnt/sdcard/.rockbox/. If
/mnt/sdcard/ is accessed as USB mass storage device, Rockbox will exit
gracefully and the loader will restart Rockbox on USB disconnect.

Tested on iBasso DX50.
Compiled (not tested) for iBasso DX90.
Compiled (not tested) for PLATFORM_ANDROID.

Change-Id: I5f5e22e68f5b4cf29c28e2b40b2c265f2beb7ab7

6 files changed, 91 insertions, 71 deletions

diff --git a/firmware/export/audiohw.h b/firmware/export/audiohw.h
index 7c5424a29d..d7bc3dd6de 100644
--- a/firmware/export/audiohw.h
+++ b/firmware/export/audiohw.h
@@ -114,6 +114,10 @@ struct sound_settings_info
 #elif (CONFIG_PLATFORM & (PLATFORM_ANDROID | PLATFORM_MAEMO\
        | PLATFORM_PANDORA | PLATFORM_SDL))
 #include "hosted_codec.h"
+#elif defined(DX50)
+#include "codec-dx50.h"
+#elif defined(DX90)
+#include "codec-dx90.h"
 #endif
 
 /* convert caps into defines */
diff --git a/firmware/export/config/ibassodx50.h b/firmware/export/config/ibassodx50.h
index 5bbb515c1c..e26d43c4a7 100644
--- a/firmware/export/config/ibassodx50.h
+++ b/firmware/export/config/ibassodx50.h
@@ -1,14 +1,35 @@
-/*
- * This config file is for Rockbox as an application on Android
- */
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
+ * Copyright (C) 2014 by Mario Basister: iBasso DX90 port
+ * Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
+ * Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* This config file is for Rockbox as an application on Android without JVM. */
 
 /* We don't run on hardware directly */
-#define CONFIG_PLATFORM (PLATFORM_HOSTED|PLATFORM_ANDROID)
+#define CONFIG_PLATFORM PLATFORM_HOSTED
 
 /* For Rolo and boot loader */
 #define MODEL_NUMBER 94
 
-#define MODEL_NAME   "iBasso DX50"
+#define MODEL_NAME "iBasso DX50"
 
 #define USB_NONE
 
@@ -41,16 +62,15 @@
 #define LCD_PIXELFORMAT RGB565
 
 #define HAVE_LCD_ENABLE
+#define HAVE_LCD_SLEEP
+#define HAVE_LCD_SLEEP_SETTING
+/*#define HAVE_LCD_FLIP*/
+#define HAVE_LCD_SHUTDOWN
 
 /* define this to indicate your device's keypad */
 #define HAVE_TOUCHSCREEN
 #define HAVE_BUTTON_DATA
-
-/* define this if you have RTC RAM available for settings */
-//#define HAVE_RTC_RAM
-
-/* define this if you have a real-time clock */
-//#define CONFIG_RTC APPLICATION
+#define HAS_BUTTON_HOLD
 
 /* Define this if you have a software controlled poweroff */
 #define HAVE_SW_POWEROFF
@@ -77,6 +97,10 @@
 
 /* Define this if you do software codec */
 #define CONFIG_CODEC SWCODEC
+#define HAVE_SW_TONE_CONTROLS
+#define HAVE_SW_VOLUME_CONTROL
+#define HW_SAMPR_CAPS SAMPR_CAP_ALL
+#define HAVE_PLAY_FREQ
 
 //#define HAVE_MULTIMEDIA_KEYS
 #define CONFIG_KEYPAD DX50_PAD
@@ -84,39 +108,26 @@
 /* define this if the target has volume keys which can be used in the lists */
 #define HAVE_VOLUME_IN_LIST
 
-/* define this if the host platform can change volume outside of rockbox */
-//#define PLATFORM_HAS_VOLUME_CHANGE
-
-#define HAVE_SW_TONE_CONTROLS
-
-#define HAVE_SW_VOLUME_CONTROL
-
 #define BATTERY_CAPACITY_DEFAULT 2100 /* default battery capacity */
-#define BATTERY_CAPACITY_MIN 1700 /* min. capacity selectable */
-#define BATTERY_CAPACITY_MAX 3200 /* max. capacity selectable */
-#define BATTERY_CAPACITY_INC 50   /* capacity increment */
-#define BATTERY_TYPES_COUNT  1    /* only one type */
+#define BATTERY_CAPACITY_MIN     1700 /* min. capacity selectable */
+#define BATTERY_CAPACITY_MAX     3200 /* max. capacity selectable */
+#define BATTERY_CAPACITY_INC       50 /* capacity increment */
+#define BATTERY_TYPES_COUNT         1 /* only one type */
 
 #define CONFIG_BATTERY_MEASURE VOLTAGE_MEASURE
+#define CONFIG_CHARGING        CHARGING_MONITOR
 
-#define CONFIG_CHARGING CHARGING_MONITOR
-
-#define NO_LOW_BATTERY_SHUTDOWN
-
-/* Define current usage levels. */
-#define CURRENT_NORMAL     210 /* 10 hours from a 2100 mAh battery */
-#define CURRENT_BACKLIGHT  30 /* TBD */
-#define CURRENT_RECORD     0  /* no recording */
-
-/* Define this to the CPU frequency */
 /*
-#define CPU_FREQ 48000000
+    10 hours from a 2100 mAh battery
+    Based on battery bench with stock Samsung battery.
 */
+#define CURRENT_NORMAL    210
+#define CURRENT_BACKLIGHT  30 /* TBD */
+#define CURRENT_RECORD      0 /* no recording */
 
 /* define this if the hardware can be powered off while charging */
 #define HAVE_POWEROFF_WHILE_CHARGING
 
-
 /* Offset ( in the firmware file's header ) to the file CRC */
 #define FIRMWARE_OFFSET_FILE_CRC 0
 
@@ -128,9 +139,6 @@
 /* Define this if a programmable hotkey is mapped */
 #define HAVE_HOTKEY
 
-#define BOOTDIR "/.rockbox"
-
 /* No special storage */
 #define CONFIG_STORAGE STORAGE_HOSTFS
 #define HAVE_STORAGE_FLUSH
-
diff --git a/firmware/export/config/ibassodx90.h b/firmware/export/config/ibassodx90.h
index 68a728eab4..6de06d9e27 100644
--- a/firmware/export/config/ibassodx90.h
+++ b/firmware/export/config/ibassodx90.h
@@ -1,9 +1,30 @@
-/*
- * This config file is for Rockbox as an application on Android
- */
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
+ * Copyright (C) 2014 by Mario Basister: iBasso DX90 port
+ * Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
+ * Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* This config file is for Rockbox as an application on Android without JVM. */
 
 /* We don't run on hardware directly */
-#define CONFIG_PLATFORM (PLATFORM_HOSTED|PLATFORM_ANDROID)
+#define CONFIG_PLATFORM PLATFORM_HOSTED
 
 /* For Rolo and boot loader */
 #define MODEL_NUMBER 95
@@ -41,16 +62,14 @@
 #define LCD_PIXELFORMAT RGB565
 
 #define HAVE_LCD_ENABLE
+#define HAVE_LCD_SHUTDOWN
+#define HAVE_LCD_SLEEP
+#define HAVE_LCD_SLEEP_SETTING
 
 /* define this to indicate your device's keypad */
 #define HAVE_TOUCHSCREEN
 #define HAVE_BUTTON_DATA
-
-/* define this if you have RTC RAM available for settings */
-//#define HAVE_RTC_RAM
-
-/* define this if you have a real-time clock */
-//#define CONFIG_RTC APPLICATION
+#define HAS_BUTTON_HOLD
 
 /* Define this if you have a software controlled poweroff */
 #define HAVE_SW_POWEROFF
@@ -77,6 +96,10 @@
 
 /* Define this if you do software codec */
 #define CONFIG_CODEC SWCODEC
+#define HAVE_SW_TONE_CONTROLS
+#define HAVE_SW_VOLUME_CONTROL
+#define HW_SAMPR_CAPS SAMPR_CAP_ALL
+#define HAVE_PLAY_FREQ
 
 //#define HAVE_MULTIMEDIA_KEYS
 #define CONFIG_KEYPAD DX50_PAD
@@ -84,13 +107,6 @@
 /* define this if the target has volume keys which can be used in the lists */
 #define HAVE_VOLUME_IN_LIST
 
-/* define this if the host platform can change volume outside of rockbox */
-//#define PLATFORM_HAS_VOLUME_CHANGE
-
-#define HAVE_SW_TONE_CONTROLS
-
-#define HAVE_SW_VOLUME_CONTROL
-
 #define BATTERY_CAPACITY_DEFAULT 2100 /* default battery capacity */
 #define BATTERY_CAPACITY_MIN 1700 /* min. capacity selectable */
 #define BATTERY_CAPACITY_MAX 3200 /* max. capacity selectable */
@@ -101,22 +117,14 @@
 
 #define CONFIG_CHARGING CHARGING_MONITOR
 
-#define NO_LOW_BATTERY_SHUTDOWN
-
 /* Define current usage levels. */
 #define CURRENT_NORMAL     210 /* 10 hours from a 2100 mAh battery */
 #define CURRENT_BACKLIGHT  30 /* TBD */
 #define CURRENT_RECORD     0  /* no recording */
 
-/* Define this to the CPU frequency */
-/*
-#define CPU_FREQ 48000000
-*/
-
 /* define this if the hardware can be powered off while charging */
 #define HAVE_POWEROFF_WHILE_CHARGING
 
-
 /* Offset ( in the firmware file's header ) to the file CRC */
 #define FIRMWARE_OFFSET_FILE_CRC 0
 
@@ -128,9 +136,6 @@
 /* Define this if a programmable hotkey is mapped */
 #define HAVE_HOTKEY
 
-#define BOOTDIR "/.rockbox"
-
 /* No special storage */
 #define CONFIG_STORAGE STORAGE_HOSTFS
 #define HAVE_STORAGE_FLUSH
-
diff --git a/firmware/export/hosted_codec.h b/firmware/export/hosted_codec.h
index 00ab099772..5391ca8ee9 100644
--- a/firmware/export/hosted_codec.h
+++ b/firmware/export/hosted_codec.h
@@ -25,9 +25,7 @@
     && !(CONFIG_PLATFORM & PLATFORM_MAEMO5)
 AUDIOHW_SETTING(VOLUME,      "dB",   0,  1, -80,   0,   0)
 #else
-#if !defined(DX50) && !defined(DX90)
 #define AUDIOHW_CAPS    (MONO_VOL_CAP)
-#endif
 AUDIOHW_SETTING(VOLUME,      "dB",   0,  1, -99,   0,   0)
 #endif /* CONFIG_PLATFORM & PLATFORM_SDL */
 
diff --git a/firmware/export/pcm_mixer.h b/firmware/export/pcm_mixer.h
index f7f869eaaf..b418a5d347 100644
--- a/firmware/export/pcm_mixer.h
+++ b/firmware/export/pcm_mixer.h
@@ -30,13 +30,15 @@
 #if CONFIG_CPU == PP5002
 /* There's far less time to do mixing because HW FIFOs are short */
 #define MIX_FRAME_SAMPLES 64
-#elif (CONFIG_PLATFORM & PLATFORM_MAEMO5)
+#elif (CONFIG_PLATFORM & PLATFORM_MAEMO5) || defined(DX50) || defined(DX90)
 /* Maemo 5 needs 2048 samples for decent performance.
    Otherwise the locking overhead inside gstreamer costs too much */
+/* iBasso Devices: Match Rockbox PCM buffer size to ALSA PCM buffer size
+   to minimize memory transfers. */
 #define MIX_FRAME_SAMPLES 2048
+#else
 /* Assume HW DMA engine is available or sufficient latency exists in the
    PCM pathway */
-#else
 #define MIX_FRAME_SAMPLES 256
 #endif
 
diff --git a/firmware/export/rbpaths.h b/firmware/export/rbpaths.h
index b04d669716..fdbf081329 100644
--- a/firmware/export/rbpaths.h
+++ b/firmware/export/rbpaths.h
@@ -40,10 +40,13 @@
 #define ROCKBOX_DIR_LEN (sizeof(ROCKBOX_DIR)-1)
 #endif /* def __PCTOOL__ */
 
-#if !defined(APPLICATION) || defined(SAMSUNG_YPR0) || defined(SAMSUNG_YPR1)
+#if !defined(APPLICATION) || defined(SAMSUNG_YPR0) || defined(SAMSUNG_YPR1) || defined(DX50) || defined(DX90)
 
 #if defined(SAMSUNG_YPR0) || defined(SAMSUNG_YPR1)
 #define HOME_DIR "/mnt/media0"
+#elif defined(DX50) || defined(DX90)
+/* Where to put save files like recordings, playlists, screen dumps ...*/
+#define HOME_DIR "/mnt/sdcard"
 #else
 #define HOME_DIR "/"
 #endif
@@ -80,7 +83,7 @@
 #define PLUGIN_DEMOS_DIR    PLUGIN_DIR "/demos"
 #define VIEWERS_DIR         PLUGIN_DIR "/viewers"
 
-#if defined(APPLICATION) && !(defined(SAMSUNG_YPR0) || defined(SAMSUNG_YPR1))
+#if defined(APPLICATION) && !(defined(SAMSUNG_YPR0) || defined(SAMSUNG_YPR1) || defined(DX50) || defined(DX90))
 #define PLUGIN_DATA_DIR          ROCKBOX_DIR "/rocks.data"
 #define PLUGIN_GAMES_DATA_DIR    PLUGIN_DATA_DIR
 #define PLUGIN_APPS_DATA_DIR     PLUGIN_DATA_DIR