-added CHEATS_UPDATE macro definition (required by last commit)

-removed unused soundbuffer for all platforms
-renamed osd_input_Update to osd_input_update

source/gx/gui/cheats.h

@@ -40,6 +40,8 @@
 #ifndef _CHEATS_H
 #define _CHEATS_H
 
+#define CHEATS_UPDATE() ROMCheatUpdate()
+
 extern void CheatMenu(void);
 extern void CheatLoad(void);
 extern void RAMCheatUpdate(void);

source/gx/gx_audio.c

@@ -124,8 +124,12 @@ void gx_audio_Shutdown(void)
  ***/
 void gx_audio_Update(void)
 {
-  /* retrieve audio samples (size must be multiple of 32 bytes) */
+  /* Current available soundbuffer */
-  int size = audio_update() * 4;
+  s16 *sb = (s16 *)(soundbuffer[mixbuffer]);
+
+  /* Retrieve audio samples (size must be multiple of 32 bytes) */
+  int size = audio_update(sb) * 4;
+
 #ifdef LOG_TIMING
   if (prevtime && (frame_cnt < LOGSIZE - 1))
   {
@@ -137,8 +141,7 @@ void gx_audio_Update(void)
   }
 #endif
 
-  /* set next DMA soundbuffer */
+  /* Update DMA settings */
-  s16 *sb = (s16 *)(soundbuffer[mixbuffer]);
   DCFlushRange((void *)sb, size);
   AUDIO_InitDMA((u32) sb, size);
   mixbuffer ^= 1;

source/gx/gx_input.h

@@ -40,6 +40,8 @@
 #ifndef _GC_INPUT_H_
 #define _GC_INPUT_H_
 
+#define osd_input_update() gx_input_UpdateEmu()
+
 /* max. supported inputs */
 #ifdef HW_RVL
 #define MAX_INPUTS 8
@@ -50,6 +52,7 @@
 /* Configurable keys */
 #define MAX_KEYS 8
 
+
 /* Key configuration structure */
 typedef struct 
 {

source/gx/osd.h

@@ -24,6 +24,7 @@
 #include "gx_video.h"
 #include "config.h"
 #include "fileio.h"
+#include "cheats.h"
 
 #define DEFAULT_PATH  "/genplus"
 #define GG_ROM        "/genplus/ggenie.bin"
@@ -40,8 +41,6 @@
 #define VERSION "Genesis Plus GX 1.6.1 (GCN)"
 #endif
 
-#define osd_input_Update() gx_input_UpdateEmu()
-
 /* globals */
 extern void legal(void);
 extern double get_framerate(void);

source/system.c

@@ -101,13 +101,6 @@ int audio_init(int samplerate, double framerate)
   snd.fm.buffer = (int32 *) malloc(snd.buffer_size * sizeof(int32) * 2);
   if (!snd.fm.buffer) return (-1);
 
-#ifndef NGC
-  /* Output buffers */
-  snd.buffer[0] = (int16 *) malloc(snd.buffer_size * sizeof(int16));
-  snd.buffer[1] = (int16 *) malloc(snd.buffer_size * sizeof(int16));
-  if (!snd.buffer[0] || !snd.buffer[1]) return (-1);
-#endif
-
   /* Resampling buffer */
   if (config.hq_fm && !Fir_Resampler_initialize(4096)) return (-1);
 
@@ -137,10 +130,6 @@ void audio_reset(void)
   snd.fm.pos  = snd.fm.buffer;
   if (snd.psg.buffer) memset (snd.psg.buffer, 0, snd.buffer_size * sizeof(int16));
   if (snd.fm.buffer) memset (snd.fm.buffer, 0, snd.buffer_size * sizeof(int32) * 2);
-#ifndef NGC
-  if (snd.buffer[0]) memset (snd.buffer[0], 0, snd.buffer_size * sizeof(int16));
-  if (snd.buffer[1]) memset (snd.buffer[1], 0, snd.buffer_size * sizeof(int16));
-#endif
 }
 
 void audio_set_equalizer(void)
@@ -156,16 +145,12 @@ void audio_shutdown(void)
   /* Sound buffers */
   if (snd.fm.buffer) free(snd.fm.buffer);
   if (snd.psg.buffer) free(snd.psg.buffer);
-#ifndef NGC
-  if (snd.buffer[0]) free(snd.buffer[0]);
-  if (snd.buffer[1]) free(snd.buffer[1]);
-#endif
 
   /* Resampling buffer */
   Fir_Resampler_shutdown();
 }
 
-int audio_update(void)
+int audio_update(int16 *buffer)
 {
   int32 i, l, r;
   int32 ll = llp;
@@ -180,10 +165,6 @@ int audio_update(void)
   int32 *fm       = snd.fm.buffer;
   int16 *psg      = snd.psg.buffer;
 
-#ifdef NGC
-  int16 *sb = (int16 *) soundbuffer[mixbuffer];
-#endif
-
   /* get number of available samples */
   int size = sound_update(mcycles_vdp);
 
@@ -249,12 +230,12 @@ int audio_update(void)
     else if (r < -32768) r = -32768;
 
     /* update sound buffer */
-#ifndef NGC
+#ifdef LSB_FIRST
-    snd.buffer[0][i] = l;
+    *buffer++ = l;
-    snd.buffer[1][i] = r;
+    *buffer++ = r;
 #else
-    *sb++ = r;
+    *buffer++ = r;
-    *sb++ = l;
+    *buffer++ = l;
 #endif
   }
 
@@ -539,7 +520,7 @@ void system_frame_gen(int do_skip)
   }
 
   /* update inputs before VINT (Warriors of Eternal Sun) */
-  osd_input_Update();
+  osd_input_update();
 
   /* delay between VINT flag & V Interrupt (Ex-Mutants, Tyrant) */
   m68k_run(mcycles_vdp + 588);
@@ -945,7 +926,7 @@ void system_frame_sms(int do_skip)
   }
 
   /* update inputs before VINT */
-  osd_input_Update();
+  osd_input_update();
 
   /* run Z80 until end of line */
   z80_run(mcycles_vdp + MCYCLES_PER_LINE);

source/system.h

@@ -84,11 +84,10 @@ typedef struct
 
 typedef struct
 {
-  int sample_rate;  /* Output Sample rate (8000-48000) */
+  int sample_rate;    /* Output Sample rate (8000-48000) */
-  double frame_rate; /* Output Frame rate (usually 50 or 60 frames per second) */
+  double frame_rate;  /* Output Frame rate (usually 50 or 60 frames per second) */
-  int enabled;      /* 1= sound emulation is enabled */
+  int enabled;        /* 1= sound emulation is enabled */
-  int buffer_size;  /* Size of sound buffer (in bytes) */
+  int buffer_size;    /* Size of sound buffer (in bytes) */
-  int16 *buffer[2]; /* Signed 16-bit stereo sound data */
   struct
   {
     int32 *pos;
@@ -116,7 +115,7 @@ extern uint32 system_clock;
 extern int audio_init(int samplerate, double framerate);
 extern void audio_reset(void);
 extern void audio_shutdown(void);
-extern int audio_update(void);
+extern int audio_update(int16 *buffer);
 extern void audio_set_equalizer(void);
 extern void system_init(void);
 extern void system_reset(void);

source/win/main.c

@@ -29,6 +29,9 @@ struct {
   int current_emulated_samples;
 } sdl_sound;
 
+
+static short soundframe[SOUND_SAMPLES_SIZE];
+
 static void sdl_sound_callback(void *userdata, Uint8 *stream, int len)
 {
   if(sdl_sound.current_emulated_samples < len) {
@@ -85,25 +88,23 @@ static int sdl_sound_init()
   return 1;
 }
 
-static void sdl_sound_update()
+static void sdl_sound_update(enabled)
 {
-  int i;
+  int size = audio_update(soundframe) * 2;
-  short* p;
+  
-
+  if (enabled)
-  int size = audio_update();
-
-  if (use_sound)
   {
+    int i;
+    short *out;
+
     SDL_LockAudio();
-    p = (short*)sdl_sound.current_pos;
+    out = (short*)sdl_sound.current_pos;
-    for(i = 0; i < size; ++i) {
+    for(i = 0; i < size; i++)
-        *p = snd.buffer[0][i];
+    {
-        ++p;
+      *out++ = soundframe[i];
-        *p = snd.buffer[1][i];
-        ++p;
     }
-    sdl_sound.current_pos = (char*)p;
+    sdl_sound.current_pos = (char*)out;
-    sdl_sound.current_emulated_samples += size * 2 * sizeof(short);
+    sdl_sound.current_emulated_samples += size * sizeof(short);
     SDL_UnlockAudio();
   }
 }
@@ -768,7 +769,7 @@ int main (int argc, char **argv)
     }
 
     sdl_video_update();
-    sdl_sound_update();
+    sdl_sound_update(use_sound);
 
     if(!turbo_mode && sdl_sync.sem_sync && sdl_video.frames_rendered % 3 == 0)
     {

source/win/osd.h

@@ -18,7 +18,7 @@
 #include "unzip.h"
 #include "fileio.h"
 
-#define osd_input_Update sdl_input_update
+#define osd_input_update sdl_input_update
 
 #define GG_ROM    "./ggenie.bin"
 #define AR_ROM    "./areplay.bin"