From 87157258b89bcba34854c95ea4fb339977b4dada Mon Sep 17 00:00:00 2001
From: Andrew Alderwick <andrew@alderwick.co.uk>
Date: Fri, 20 Aug 2021 22:45:39 +0100
Subject: [PATCH] Implemented Audio*/vector which runs when notes finish
 playing

---
 src/devices/apu.c |  3 ++-
 src/devices/apu.h |  1 +
 src/uxnemu.c      | 13 ++++++++++++-
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/devices/apu.c b/src/devices/apu.c
index 58b5c44..9c55f06 100644
--- a/src/devices/apu.c
+++ b/src/devices/apu.c
@@ -49,7 +49,7 @@ apu_render(Apu *c, Sint16 *sample, Sint16 *end)
 		if(c->i >= c->len) {
 			if(!c->repeat) {
 				c->advance = 0;
-				return 1;
+				break;
 			}
 			c->i %= c->len;
 		}
@@ -57,6 +57,7 @@ apu_render(Apu *c, Sint16 *sample, Sint16 *end)
 		*sample++ += s * c->volume[0] / 0x180;
 		*sample++ += s * c->volume[1] / 0x180;
 	}
+	if(!c->advance) apu_finished_handler(c);
 	return 1;
 }
 
diff --git a/src/devices/apu.h b/src/devices/apu.h
index 839000b..6531c9a 100644
--- a/src/devices/apu.h
+++ b/src/devices/apu.h
@@ -26,3 +26,4 @@ typedef struct {
 int apu_render(Apu *c, Sint16 *sample, Sint16 *end);
 void apu_start(Apu *c, Uint16 adsr, Uint8 pitch);
 Uint8 apu_get_vu(Apu *c);
+void apu_finished_handler(Apu *c);
diff --git a/src/uxnemu.c b/src/uxnemu.c
index afbe40e..549cb1f 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -32,7 +32,7 @@ static SDL_Rect gRect;
 static Ppu ppu;
 static Apu apu[POLYPHONY];
 static Device *devsystem, *devscreen, *devmouse, *devctrl, *devaudio0, *devconsole;
-static Uint32 stdin_event;
+static Uint32 stdin_event, audio0_event;
 
 static Uint8 zoom = 1, reqdraw = 0;
 
@@ -410,6 +410,14 @@ nil_talk(Device *d, Uint8 b0, Uint8 w)
 
 #pragma mark - Generics
 
+void
+apu_finished_handler(Apu *c)
+{
+	SDL_Event event;
+	event.type = audio0_event + (c - apu);
+	SDL_PushEvent(&event);
+}
+
 static int
 stdin_handler(void *p)
 {
@@ -474,6 +482,8 @@ run(Uxn *u)
 				if(event.type == stdin_event) {
 					devconsole->dat[0x2] = event.cbutton.button;
 					uxn_eval(u, mempeek16(devconsole->dat, 0));
+				} else if(event.type >= audio0_event && event.type < audio0_event + POLYPHONY) {
+					uxn_eval(u, mempeek16((devaudio0 + (event.type - audio0_event))->dat, 0));
 				}
 			}
 		}
@@ -504,6 +514,7 @@ main(int argc, char **argv)
 	Uxn u;
 
 	stdin_event = SDL_RegisterEvents(1);
+	audio0_event = SDL_RegisterEvents(POLYPHONY);
 	SDL_CreateThread(stdin_handler, "stdin", NULL);
 
 	if(argc < 2)