Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button

1 files changed, 5 insertions, 3 deletions

diff --git a/psg.h b/psg.h
index 503bac2..4cd4552 100644
--- a/psg.h
+++ b/psg.h
@@ -1,6 +1,6 @@
 /*
  Copyright 2013 Michael Pavone
- This file is part of BlastEm. 
+ This file is part of BlastEm.
  BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
 */
 #ifndef PSG_CONTEXT_H_
@@ -11,11 +11,12 @@
 typedef struct {
 	int16_t  *audio_buffer;
 	int16_t  *back_buffer;
-	double   buffer_fraction;
-	double   buffer_inc;
+	uint64_t buffer_fraction;
+	uint64_t buffer_inc;
 	uint32_t buffer_pos;
 	uint32_t clock_inc;
 	uint32_t cycles;
+	uint32_t sample_rate;
 	uint32_t samples_frame;
 	uint16_t lsfr;
 	uint16_t counter_load[4];
@@ -30,6 +31,7 @@ typedef struct {
 
 
 void psg_init(psg_context * context, uint32_t sample_rate, uint32_t master_clock, uint32_t clock_div, uint32_t samples_frame);
+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);