--- a/psg.h	Thu Mar 26 23:53:35 2020 -0700
+++ b/psg.h	Fri Mar 27 00:03:58 2020 -0700
@@ -9,9 +9,11 @@
 #include <stdint.h>
 #include "serialize.h"
 #include "render_audio.h"
+#include "vgm.h"
 
 typedef struct {
 	audio_source *audio;
+	vgm_writer   *vgm;
 	uint32_t clock_inc;
 	uint32_t cycles;
 	uint16_t lsfr;
@@ -31,6 +33,7 @@
 void psg_adjust_master_clock(psg_context * context, uint32_t master_clock);
 void psg_write(psg_context * context, uint8_t value);
 void psg_run(psg_context * context, uint32_t cycles);
+void psg_vgm_log(psg_context *context, uint32_t master_clock, vgm_writer *vgm);
 void psg_serialize(psg_context *context, serialize_buffer *buf);
 void psg_deserialize(deserialize_buffer *buf, void *vcontext);