Initial testing support

Added the ability to compile a subset of functions in to a test
executable for Linux. To be used in the future for testing.

Removed unnecessary includes.

Tested working by compiling test executable for GNU/Linux and for the
3DS. The 3dsx was tested in citra.

Signed-off-by: Mahyar Koshkouei <mk@deltabeard.com>

source/flac.c

@@ -1,5 +1,3 @@
-#include <3ds.h>
-
 #define DR_FLAC_IMPLEMENTATION
 #include <./dr_libs/dr_flac.h>
 

source/mp3.c

@@ -1,4 +1,3 @@
-#include <3ds.h>
 #include <mpg123.h>
 #include <stdio.h>
 #include <stdlib.h>

source/mp3.h

@@ -1,3 +1,4 @@
+#include <stdint.h>
 #include "playback.h"
 
 /**

source/opus.c

@@ -1,4 +1,3 @@
-#include <3ds.h>
 #include <stdlib.h>
 #include <string.h>
 

source/playback.h

@@ -1,3 +1,5 @@
+#include <stdbool.h>
+
 #ifndef ctrmus_playback_h
 #define ctrmus_playback_h
 

source/test.c

@@ -0,0 +1,63 @@
+#if defined __gnu_linux__
+#include <stdint.h>
+#include <stdio.h>
+
+#include "flac.h"
+#include "mp3.h"
+#include "opus.h"
+#include "playback.h"
+#include "vorbis.h"
+#include "wav.h"
+#include "playback.h"
+
+/**
+ * Test the various decoder modules in ctrmus.
+ */
+int main(int argc, char *argv[])
+{
+	struct decoder_fn decoder;
+
+	if(argc != 2)
+	{
+		puts("FILE is required.");
+		printf("%s FILE\n", argv[0]);
+		return 0;
+	}
+#if 0
+	switch(getFileType(argv[1]))
+	{
+		case FILE_TYPE_WAV:
+			setWav(&decoder);
+			break;
+
+		case FILE_TYPE_FLAC:
+			setFlac(&decoder);
+			break;
+
+		case FILE_TYPE_OPUS:
+			setOpus(&decoder);
+			break;
+
+		case FILE_TYPE_MP3:
+			setMp3(&decoder);
+			break;
+
+		case FILE_TYPE_VORBIS:
+			setVorbis(&decoder);
+			break;
+
+		default:
+			goto err;
+	}
+#endif
+
+	return 0;
+
+err:
+	puts("Error");
+	return -1;
+}
+
+#else
+#pragma message ( "Test ignored for 3DS build." )
+#endif

source/vorbis.c

@@ -1,4 +1,3 @@
-#include <3ds.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

source/wav.c

@@ -1,4 +1,3 @@
-#include <3ds.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

source/wav.h

@@ -1,3 +1,4 @@
+#include <stdint.h>
 #include "playback.h"
 
 /**