X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=linux%2F940ctl_ym2612.c;h=ee63458df0be995bdf3648f5f8920214f738bc17;hb=385a157ee97f08b698e008acd2b6e569f6d0b6c2;hp=4458a2f26f0099703cc238059b549336b46e7f4b;hpb=979ba09f053261922f8ccb4889c7367fbf010453;p=libpicofe.git

diff --git a/linux/940ctl_ym2612.c b/linux/940ctl_ym2612.c
index 4458a2f..ee63458 100644
--- a/linux/940ctl_ym2612.c
+++ b/linux/940ctl_ym2612.c
@@ -13,20 +13,18 @@
 #include "../gp2x/emu.h"
 #include "../gp2x/menu.h"
 #include "../gp2x/code940/940shared.h"
-#include "../gp2x/helix/pub/mp3dec.h"
+#include "../common/helix/pub/mp3dec.h"
 #include "../../Pico/PicoInt.h"
 
 
 static YM2612 ym2612;
 
 YM2612 *ym2612_940 = &ym2612;
-int  mix_buffer_[44100/50*2];	/* this is where the YM2612 samples will be mixed to */
-int *mix_buffer = mix_buffer_;
 
 // static _940_data_t  shared_data_;
 static _940_ctl_t   shared_ctl_;
 // static _940_data_t *shared_data = &shared_data_;
-static _940_ctl_t  *shared_ctl = &shared_ctl_;
+_940_ctl_t  *shared_ctl = &shared_ctl_;
 
 unsigned char *mp3_mem = 0;
 
@@ -34,15 +32,6 @@ unsigned char *mp3_mem = 0;
 
 /***********************************************************/
 
-#define MAXOUT		(+32767)
-#define MINOUT		(-32768)
-
-/* limitter */
-#define Limit(val, max,min) { \
-	if ( val > max )      val = max; \
-	else if ( val < min ) val = min; \
-}
-
 
 int YM2612Write_940(unsigned int a, unsigned int v)
 {
@@ -51,19 +40,6 @@ int YM2612Write_940(unsigned int a, unsigned int v)
 	return 0; // cause the engine to do updates once per frame only
 }
 
-UINT8 YM2612Read_940(void)
-{
-	return YM2612Read_();
-}
-
-
-int YM2612PicoTick_940(int n)
-{
-	YM2612PicoTick_(n);
-
-	return 0;
-}
-
 
 void YM2612PicoStateLoad_940(void)
 {
@@ -82,10 +58,18 @@ void YM2612PicoStateLoad_940(void)
 }
 
 
-void YM2612Init_940(int baseclock, int rate)
+void sharedmem_init(void)
 {
 	mp3_mem = malloc(MP3_SIZE_MAX);
+}
+
+void sharedmem_deinit(void)
+{
+	free(mp3_mem);
+}
 
+void YM2612Init_940(int baseclock, int rate)
+{
 	YM2612Init_(baseclock, rate);
 }
 
@@ -96,58 +80,6 @@ void YM2612ResetChip_940(void)
 }
 
 
-static void mix_samples(short *dest_buf, int *ym_buf, short *mp3_buf, int len, int stereo)
-{
-	if (mp3_buf)
-	{
-		if (stereo)
-		{
-			for (; len > 0; len--)
-			{
-				int l, r;
-				l = r = *dest_buf;
-				l += *ym_buf++;  r += *ym_buf++;
-				l += *mp3_buf++; r += *mp3_buf++;
-				Limit( l, MAXOUT, MINOUT );
-				Limit( r, MAXOUT, MINOUT );
-				*dest_buf++ = l; *dest_buf++ = r;
-			}
-		} else {
-			for (; len > 0; len--)
-			{
-				int l = *ym_buf++;
-				l += *dest_buf;
-				l += *mp3_buf++;
-				Limit( l, MAXOUT, MINOUT );
-				*dest_buf++ = l;
-			}
-		}
-	}
-	else
-	{
-		if (stereo)
-		{
-			for (; len > 0; len--)
-			{
-				int l, r;
-				l = r = *dest_buf;
-				l += *ym_buf++, r += *ym_buf++;
-				Limit( l, MAXOUT, MINOUT );
-				Limit( r, MAXOUT, MINOUT );
-				*dest_buf++ = l; *dest_buf++ = r;
-			}
-		} else {
-			for (; len > 0; len--)
-			{
-				int l = *ym_buf++;
-				l += *dest_buf;
-				Limit( l, MAXOUT, MINOUT );
-				*dest_buf++ = l;
-			}
-		}
-	}
-}
-
 #if 0
 static void local_decode(void)
 {
@@ -190,7 +122,7 @@ static void local_decode(void)
 
 static FILE *loaded_mp3 = 0;
 
-void YM2612UpdateOne_940(short *buffer, int length, int stereo)
+int YM2612UpdateOne_940(int *buffer, int length, int stereo, int is_buf_empty)
 {
 #if 0
 	int cdda_on, *ym_buffer = mix_buffer;
@@ -233,13 +165,17 @@ void YM2612UpdateOne_940(short *buffer, int length, int stereo)
 		mp3_samples_ready += 1152;
 	}
 #else
-	YM2612UpdateOne_(buffer, length, stereo); // really writes to mix_buffer
-
-	mix_samples(buffer, mix_buffer, 0, length, stereo);
+	return YM2612UpdateOne_(buffer, length, stereo, is_buf_empty);
 #endif
 }
 
 
+void mp3_update(int *buffer, int length, int stereo)
+{
+	// nothing..
+}
+
+
 /***********************************************************/
 
 void mp3_start_play(FILE *f, int pos) // pos is 0-1023
@@ -269,4 +205,9 @@ void mp3_start_play(FILE *f, int pos) // pos is 0-1023
 }
 
 
+int mp3_get_offset(void)
+{
+	return 0;
+}
+