From a05582320eb6ef70dcba70b2971ad1b62a087355 Mon Sep 17 00:00:00 2001
From: Jasmine Iwanek <jasmine@iwanek.co.uk>
Date: Thu, 19 Dec 2024 03:29:07 -0500
Subject: [PATCH] Add SSG

---
 src/include/86box/snd_opl.h | 49 ++++++++++++++++++++-----------------
 src/sound/snd_opl.c         |  5 ++++
 src/sound/snd_opl_ymfm.cpp  | 23 +++++++++++++++++
 3 files changed, 54 insertions(+), 23 deletions(-)

diff --git a/src/include/86box/snd_opl.h b/src/include/86box/snd_opl.h
index f5a1058a8..5bd1166a2 100644
--- a/src/include/86box/snd_opl.h
+++ b/src/include/86box/snd_opl.h
@@ -18,29 +18,30 @@
 #define SOUND_OPL_H
 
 enum fm_type {
-    FM_YM3526    =  0, /* OPL */
-    FM_Y8950     =  1, /* MSX-Audio (OPL with ADPCM) */
-    FM_YM3812    =  2, /* OPL2 */
-    FM_YMF262    =  3, /* OPL3 */
-    FM_YMF289B   =  4, /* OPL3-L */
-    FM_YMF278B   =  5, /* OPL4 */
-    FM_YM2413    =  6, /* OPLL */
-    FM_YM2423    =  7, /* OPLL-X */
-    FM_YMF281    =  8, /* OPLLP */
-    FM_DS1001    =  9, /* Konami VRC7 MMC */
-    FM_YM2151    = 10, /* OPM */
-    FM_YM2203    = 11, /* OPN */
-    FM_YM2608    = 12, /* OPNA */
-    FM_YMF288    = 13, /* OPN3L */
-    FM_YM2610    = 14, /* OPNB */
-    FM_YM2610B   = 15, /* OPNB2 */
-    FM_YM2612    = 16, /* OPN2 */
-    FM_YM3438    = 17, /* OPN2C */
-    FM_YMF276    = 18, /* OPN2L */
-    FM_YM2164    = 19, /* OPP */
-    FM_ESFM      = 20, /* ESFM */
-    FM_OPL2BOARD = 21, /* OPL2Board (External Device) */
-    FM_MAX       = 22
+    FM_YM2149    =  0, /* SSG */
+    FM_YM3526    =  1, /* OPL */
+    FM_Y8950     =  2, /* MSX-Audio (OPL with ADPCM) */
+    FM_YM3812    =  3, /* OPL2 */
+    FM_YMF262    =  4, /* OPL3 */
+    FM_YMF289B   =  5, /* OPL3-L */
+    FM_YMF278B   =  6, /* OPL4 */
+    FM_YM2413    =  7, /* OPLL */
+    FM_YM2423    =  8, /* OPLL-X */
+    FM_YMF281    =  9, /* OPLLP */
+    FM_DS1001    = 10, /* Konami VRC7 MMC */
+    FM_YM2151    = 11, /* OPM */
+    FM_YM2203    = 12, /* OPN */
+    FM_YM2608    = 13, /* OPNA */
+    FM_YMF288    = 14, /* OPN3L */
+    FM_YM2610    = 15, /* OPNB */
+    FM_YM2610B   = 16, /* OPNB2 */
+    FM_YM2612    = 17, /* OPN2 */
+    FM_YM3438    = 18, /* OPN2C */
+    FM_YMF276    = 19, /* OPN2L */
+    FM_YM2164    = 20, /* OPP */
+    FM_ESFM      = 21, /* ESFM */
+    FM_OPL2BOARD = 22, /* OPL2Board (External Device) */
+    FM_MAX       = 23
 };
 
 enum fm_driver {
@@ -70,6 +71,8 @@ extern const fm_drv_t ymfm_opl2board_drv;
 extern const device_t ym3812_nuked_device;
 extern const device_t ymf262_nuked_device;
 
+extern const device_t ym2149_ymfm_device;
+
 /* OPL Series */
 extern const device_t ym3526_ymfm_device;
 extern const device_t y8950_ymfm_device;
diff --git a/src/sound/snd_opl.c b/src/sound/snd_opl.c
index 9fb96777e..1cf3bab29 100644
--- a/src/sound/snd_opl.c
+++ b/src/sound/snd_opl.c
@@ -39,6 +39,11 @@ uint8_t
 fm_driver_get(int chip_id, fm_drv_t *drv)
 {
     switch (chip_id) {
+        case FM_YM2149: /* SSG */
+            *drv      = ymfm_drv;
+            drv->priv = device_add_inst(&ym2149_ymfm_device, fm_dev_inst[fm_driver][chip_id]++);
+            break;
+
         case FM_YM3526: /* OPL */
             *drv      = ymfm_drv;
             drv->priv = device_add_inst(&ym3526_ymfm_device, fm_dev_inst[fm_driver][chip_id]++);
diff --git a/src/sound/snd_opl_ymfm.cpp b/src/sound/snd_opl_ymfm.cpp
index d414e910e..007722e82 100644
--- a/src/sound/snd_opl_ymfm.cpp
+++ b/src/sound/snd_opl_ymfm.cpp
@@ -19,9 +19,13 @@
 #include <cstdlib>
 #include <cstring>
 #include "ymfm/ymfm_ssg.h"
+#include "ymfm/ymfm_misc.h"
 #include "ymfm/ymfm_opl.h"
 #include "ymfm/ymfm_opm.h"
 #include "ymfm/ymfm_opn.h"
+#include "ymfm/ymfm_opq.h"
+#include "ymfm/ymfm_opx.h"
+#include "ymfm/ymfm_opz.h"
 
 extern "C" {
 #define HAVE_STDARG_H
@@ -322,6 +326,11 @@ ymfm_drv_init(const device_t *info)
     YMFMChipBase *fm;
 
     switch (info->local) {
+        case FM_YM2149: /* OPL */
+            // TODO: Check rates and frequency
+            fm = (YMFMChipBase *) new YMFMChip<ymfm::ym2149>(14318181, FM_YM2149, FREQ_49716);
+            break;
+
         case FM_YM3526: /* OPL */
             // TODO: Check rates and frequency
             fm = (YMFMChipBase *) new YMFMChip<ymfm::ym3526>(14318181, FM_YM3526, FREQ_49716);
@@ -500,6 +509,20 @@ ymfm_drv_generate(void *priv, int32_t *data, uint32_t num_samples)
     drv->generate(data, num_samples);
 }
 
+const device_t ym2149_ymfm_device = {
+    .name          = "Yamaha 2149 SSG (YMFM)",
+    .internal_name = "ym2149_ymfm",
+    .flags         = 0,
+    .local         = FM_YM2149,
+    .init          = ymfm_drv_init,
+    .close         = ymfm_drv_close,
+    .reset         = NULL,
+    .available     = NULL,
+    .speed_changed = NULL,
+    .force_redraw  = NULL,
+    .config        = NULL
+};
+
 const device_t ym3526_ymfm_device = {
     .name          = "Yamaha YM3526 OPL (YMFM)",
     .internal_name = "ym3526_ymfm",