From b723af3635a37151ae8d2b3e375acf6d5296acfd Mon Sep 17 00:00:00 2001
From: Daryl Borth <dborth@gmail.com>
Date: Sun, 6 Jan 2019 10:17:20 -0700
Subject: [PATCH] Add support to load external background music

---
 readme.txt             |  2 ++
 source/fileop.cpp      | 29 +++++++++++++++++++++++++++++
 source/fileop.h        |  1 +
 source/mem2.cpp        |  2 +-
 source/menu.cpp        |  5 ++++-
 source/menu.h          |  3 +++
 source/preferences.cpp |  7 +++++++
 7 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/readme.txt b/readme.txt
index e1486b4..2f3a7ae 100644
--- a/readme.txt
+++ b/readme.txt
@@ -39,6 +39,8 @@ Wii homebrew is WiiBrew (www.wiibrew.org).
 * Fixed Wii U GamePad support
 * Added ability to load external fonts and activated Japanese/Korean 
   translations. Simply put the ko.ttf or jp.ttf in the app directory
+* Added ability to customize background music. Simply put a bg_music.ogg
+  in the app directory
 * Added ability to change preview image source with + button (thanks Zalo!)
 
 [4.4.1 - January 4, 2019]
diff --git a/source/fileop.cpp b/source/fileop.cpp
index 2128715..3cac6cc 100644
--- a/source/fileop.cpp
+++ b/source/fileop.cpp
@@ -890,6 +890,35 @@ size_t LoadFont(char * filepath)
 	fclose(file);
 	return loadSize;
 }
+
+void LoadBgMusic()
+{
+	char filepath[MAXPATHLEN];
+	sprintf(filepath, "%s/bg_music.ogg", appPath);
+	FILE *file = fopen (filepath, "rb");
+	if(!file) {
+		return;
+	}
+
+	fseeko(file,0,SEEK_END);
+	size_t ogg_size = ftello(file);
+
+	if(ogg_size == 0) {
+		return;
+	}
+
+	u8 * ogg_data = (u8 *)mem2_malloc(ogg_size);
+
+	if(!ogg_data) {
+		return;
+	}
+
+	fseeko(file, 0, SEEK_SET);
+	fread (ogg_data, 1, ogg_size, file);
+	fclose(file);
+	bg_music = ogg_data;
+	bg_music_size = ogg_size;
+}
 #endif
 
 /****************************************************************************
diff --git a/source/fileop.h b/source/fileop.h
index 5f0dc49..3d85371 100644
--- a/source/fileop.h
+++ b/source/fileop.h
@@ -37,6 +37,7 @@ size_t LoadFile(char * rbuffer, char *filepath, size_t length, size_t buffersize
 size_t LoadFile(char * filepath, bool silent);
 size_t LoadSzFile(char * filepath, unsigned char * rbuffer);
 size_t LoadFont(char *filepath);
+void LoadBgMusic();
 size_t SaveFile(char * buffer, char *filepath, size_t datasize, bool silent);
 size_t SaveFile(char * filepath, size_t datasize, bool silent);
 
diff --git a/source/mem2.cpp b/source/mem2.cpp
index 08be67d..f2e0c84 100644
--- a/source/mem2.cpp
+++ b/source/mem2.cpp
@@ -19,7 +19,7 @@ static heap_cntrl mem2_heap;
 
 u32 InitMem2Manager () 
 {
-	int size = (12*1024*1024);
+	int size = (20*1024*1024);
 	u32 level;
 	_CPU_ISR_Disable(level);
 	size &= ~0x1f; // round down, because otherwise we may exceed the area
diff --git a/source/menu.cpp b/source/menu.cpp
index 16266e1..07c9b9c 100644
--- a/source/menu.cpp
+++ b/source/menu.cpp
@@ -98,6 +98,9 @@ static char progressMsg[201];
 static int progressDone = 0;
 static int progressTotal = 0;
 
+u8 * bg_music;
+u32 bg_music_size;
+
 /****************************************************************************
  * ResumeGui
  *
@@ -4292,7 +4295,7 @@ MainMenu (int menu)
 
 	#ifndef NO_SOUND
 	if(firstRun) {
-		bgMusic = new GuiSound(bg_music_ogg, bg_music_ogg_size, SOUND_OGG);
+		bgMusic = new GuiSound(bg_music, bg_music_size, SOUND_OGG);
 		bgMusic->SetVolume(GCSettings.MusicVolume);
 		bgMusic->SetLoop(true);
 		enterSound = new GuiSound(enter_ogg, enter_ogg_size, SOUND_OGG);
diff --git a/source/menu.h b/source/menu.h
index 7b2edb5..d87fe3e 100644
--- a/source/menu.h
+++ b/source/menu.h
@@ -23,6 +23,9 @@ void CancelAction();
 void ShowProgress (const char *msg, int done, int total);
 void ChangeLanguage();
 
+extern u8 * bg_music;
+extern u32 bg_music_size;
+
 enum
 {
 	MENU_EXIT = -1,
diff --git a/source/preferences.cpp b/source/preferences.cpp
index 9f4e18f..ef8977f 100644
--- a/source/preferences.cpp
+++ b/source/preferences.cpp
@@ -729,5 +729,12 @@ bool LoadPrefs()
 	}
 
 	ChangeLanguage();
+	
+#ifdef HW_RVL
+	bg_music = (u8 * )bg_music_ogg;
+	bg_music_size = bg_music_ogg_size;
+	LoadBgMusic();
+#endif
+
 	return prefFound;
 }