moved global variable "ob" to outputBuffer.h

This releases several include file dependencies.  As a side effect,
"CHUNK_SIZE" isn't defined by decoder_api.h anymore, so we have to
define it directly in the plugins which need it.  It just isn't worth
it to add it to the decoder plugin API.

src/decoder_api.c

@@ -25,6 +25,7 @@
 #include "utils.h"
 #include "normalize.h"
 #include "playerData.h"
+#include "outputBuffer.h"
 #include "gcc.h"
 
 void decoder_plugin_register(struct decoder_plugin *plugin)

src/inputPlugins/audiofile_plugin.c

@@ -26,6 +26,9 @@
 
 #include <audiofile.h>
 
+/* pick 1020 since its devisible for 8,16,24, and 32-bit audio */
+#define CHUNK_SIZE		1020
+
 static int getAudiofileTotalTime(char *file)
 {
 	int total_time;

src/inputPlugins/wavpack_plugin.c

@@ -28,6 +28,9 @@
 
 #include <wavpack/wavpack.h>
 
+/* pick 1020 since its devisible for 8,16,24, and 32-bit audio */
+#define CHUNK_SIZE		1020
+
 #define ERRORLEN 80
 
 static struct {

src/outputBuffer.c

@@ -17,10 +17,11 @@
  */
 
 #include "outputBuffer.h"
-#include "playerData.h"
 
 #include "utils.h"
 
+struct output_buffer ob;
+
 void ob_init(unsigned int size, Notify *notify)
 {
 	assert(size > 0);

src/outputBuffer.h

@@ -36,7 +36,7 @@ typedef struct _OutputBufferChunk {
  * A ring set of buffers where the decoder appends data after the end,
  * and the player consumes data from the beginning.
  */
-typedef struct _OutputBuffer {
+struct output_buffer {
 	ob_chunk *chunks;
 
 	unsigned int size;
@@ -54,7 +54,9 @@ typedef struct _OutputBuffer {
 	AudioFormat audioFormat;
 
 	Notify *notify;
-} OutputBuffer;
+};
+
+extern struct output_buffer ob;
 
 void ob_init(unsigned int size, Notify *notify);
 

src/playerData.c

@@ -18,6 +18,7 @@
 
 #include "playerData.h"
 #include "decode.h"
+#include "outputBuffer.h"
 #include "conf.h"
 #include "log.h"
 #include "utils.h"
@@ -27,7 +28,6 @@
 
 unsigned int buffered_before_play;
 PlayerControl pc;
-OutputBuffer ob;
 
 void initPlayerData(void)
 {

src/playerData.h

@@ -20,11 +20,9 @@
 #define PLAYER_DATA_H
 
 #include "player.h"
-#include "outputBuffer.h"
 
 extern unsigned int buffered_before_play;
 extern PlayerControl pc;
-extern OutputBuffer ob;
 
 void initPlayerData(void);