pizza: support pocahontas custom musacks. this game is an abomination

waterbox/pizza/Makefile

@@ -10,7 +10,7 @@ CCFLAGS:=$(FLAGS) -Ilib \
 	-std=c99 \
 	-DLSB_FIRST -D_GNU_SOURCE
 
-CPPFLAGS:=$(FLAGS)
+CPPFLAGS:=$(FLAGS) -DSPC_NO_COPY_STATE_FUNCS
 
 TARGET = pizza.wbx
 

waterbox/pizza/lib/sgb.c

@@ -454,7 +454,8 @@ static void cmd_sound(void)
 	{
 		sgb.sound_control[1] = sgb.command[1];
 		sgb.sound_control[2] = sgb.command[2];
-		sgb.sound_control[3] = sgb.command[3];		
+		sgb.sound_control[3] = sgb.command[3];
+		sgb.sound_control[0] = sgb.command[4];
 	}
 	else
 	{
@@ -732,6 +733,26 @@ void sgb_set_controller_data(const uint8_t *buttons)
 	memcpy(sgb.joypad_data, buttons, sizeof(sgb.joypad_data));
 }
 
+static void trn_sound(const uint8_t* data)
+{
+	int len = data[0] | data[1] << 8;
+	int addr = data[2] | data[3] << 8;
+	utils_log("TRN_SOUND %04x %04x", addr, len);
+	uint8_t* dst = spc_get_ram(sgb.spc);
+
+	if (len > 0xffc)
+	{
+		utils_log("TRN_SOUND src overflow");
+		return;
+	}
+	if (len + addr >= 0x10000)
+	{
+		utils_log("TRN_SOUND dst overflow");
+		return;
+	}
+	memcpy(dst + addr, data + 4, len);
+}
+
 static void trn_pal(const uint8_t *data)
 {
 	const uint16_t *src = (const uint16_t *)data;
@@ -826,6 +847,7 @@ static void do_vram_transfer(void)
 	switch (sgb.waiting_transfer)
 	{
 	case TRN_SOUND:
+		trn_sound(vram);
 		break;
 	case TRN_PAL:
 		trn_pal(vram);
@@ -962,6 +984,7 @@ void sgb_render_audio(uint64_t time, void (*callback)(int16_t l, int16_t r, uint
 	}
 	if (p == 4) // recived
 	{
+		sgb.sound_control[0] = 0;
 		sgb.sound_control[1] = 0;
 		sgb.sound_control[2] = 0;
 	}

waterbox/pizza/lib/snes_spc/SNES_SPC.h

@@ -51,6 +51,8 @@ public:
 
 	// Runs SPC to end_time and starts a new time frame at 0
 	void end_frame( time_t end_time );
+
+	uint8_t* get_ram();
 	
 // Sound control
 	
@@ -254,6 +256,8 @@ private:
 
 #include <assert.h>
 
+inline uint8_t* SNES_SPC::get_ram() { return m.ram.ram; }
+
 inline int SNES_SPC::sample_count() const { return (m.extra_clocks >> 5) * 2; }
 
 inline int SNES_SPC::read_port( time_t t, int port )

waterbox/pizza/lib/snes_spc/spc.cpp

@@ -54,6 +54,7 @@ void spc_end_frame       ( SNES_SPC* s, spc_time_t t )                  { s->end
 void spc_mute_voices     ( SNES_SPC* s, int mask )                      { s->mute_voices( mask ); }
 void spc_disable_surround( SNES_SPC* s, int disable )                   { s->disable_surround( disable ); }
 void spc_set_tempo       ( SNES_SPC* s, int tempo )                     { s->set_tempo( tempo ); }
+uint8_t* spc_get_ram(SNES_SPC* s) { return s->get_ram(); }
 spc_err_t spc_load_spc   ( SNES_SPC* s, void const* p, long n )         { return s->load_spc( p, n ); }
 void spc_clear_echo      ( SNES_SPC* s )                                { s->clear_echo(); }
 spc_err_t spc_play       ( SNES_SPC* s, int count, short* out )         { return s->play( count, out ); }

waterbox/pizza/lib/snes_spc/spc.h

@@ -5,6 +5,7 @@
 #define SPC_H
 
 #include <stddef.h>
+#include <stdint.h>
 
 #ifdef __cplusplus
 	extern "C" {
@@ -60,6 +61,7 @@ void spc_write_port( SNES_SPC*, spc_time_t, int port, int data );
 /* Runs SPC to end_time and starts a new time frame at 0 */
 void spc_end_frame( SNES_SPC*, spc_time_t end_time );
 
+uint8_t* spc_get_ram(SNES_SPC*);
 
 /**** Sound control ****/