From 8abd7a81c988b26c19406c1ea669e050d56d2db5 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Tue, 13 Sep 2022 12:29:37 -0500
Subject: add initial audio bindings

---
 src/audio/CMakeLists.txt |  5 ++++
 src/audio/audio.c        | 74 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/audio/audio.h        |  8 ++++++
 src/main.c               | 10 ++++---
 4 files changed, 93 insertions(+), 4 deletions(-)
 create mode 100644 src/audio/CMakeLists.txt
 create mode 100644 src/audio/audio.c
 create mode 100644 src/audio/audio.h

(limited to 'src')

diff --git a/src/audio/CMakeLists.txt b/src/audio/CMakeLists.txt
new file mode 100644
index 0000000..41644fb
--- /dev/null
+++ b/src/audio/CMakeLists.txt
@@ -0,0 +1,5 @@
+project(honey_engine)
+
+target_sources(honey PUBLIC
+	${CMAKE_CURRENT_LIST_DIR}/audio.c
+)
diff --git a/src/audio/audio.c b/src/audio/audio.c
new file mode 100644
index 0000000..45d11c2
--- /dev/null
+++ b/src/audio/audio.c
@@ -0,0 +1,74 @@
+#include <lua.h>
+#include <honeysuckle.h>
+
+#define STB_VORBIS_HEADER_ONLY
+#include <stb_vorbis.c>
+#define MINIAUDIO_IMPLEMENTATION
+#include <miniaudio.h>
+#undef STB_VORBIS_HEADER_ONLY
+#include <stb_vorbis.c>
+
+/* stb_vorbis defines this for some reason? */
+#undef L
+
+#include "audio.h"
+
+
+int audio_engine_init(lua_State *L);
+int audio_engine_uninit(lua_State *L);
+int audio_engine_play_sound(lua_State *L);
+
+
+void setup_audio(lua_State *L, int honey_tbl)
+{
+	hs_create_table(L,
+		hs_str_cfunc("engine_init", audio_engine_init),
+		hs_str_cfunc("engine_uninit", audio_engine_uninit),
+		hs_str_cfunc("engine_play_sound", audio_engine_play_sound),
+
+		/* ma_result values */
+		hs_str_int("MA_SUCCESS", MA_SUCCESS),
+	);
+	lua_setfield(L, honey_tbl, "audio");
+}
+
+
+int audio_engine_init(lua_State *L)
+{
+	ma_engine *engine = malloc(sizeof(ma_engine));
+	if (engine == NULL)
+		hs_throw_error(L, "failed to allocate memory for engine");
+	
+	ma_result result = ma_engine_init(NULL, engine);
+	if (result != MA_SUCCESS)
+		hs_throw_error(L, "failed to initialize audio engine: %d", result);
+	
+	lua_pushlightuserdata(L, engine);
+	return 1;
+}
+
+
+int audio_engine_uninit(lua_State *L)
+{
+	ma_engine *engine;
+	void *engine_ptr;
+	hs_parse_args(L, hs_light(engine_ptr));
+	engine = engine_ptr;
+
+	ma_engine_uninit(engine);
+	free(engine);
+	return 0;
+}
+
+
+int audio_engine_play_sound(lua_State *L)
+{
+	ma_engine *engine;
+	void *engine_ptr;
+	char *filename;
+	hs_parse_args(L, hs_light(engine_ptr), hs_str(filename));
+	engine = engine_ptr;
+
+	ma_engine_play_sound(engine, filename, NULL);
+	return 0;
+}
diff --git a/src/audio/audio.h b/src/audio/audio.h
new file mode 100644
index 0000000..1aa7f43
--- /dev/null
+++ b/src/audio/audio.h
@@ -0,0 +1,8 @@
+#ifndef HONEY_AUDIO_H
+#define HONEY_AUDIO_H
+
+#include <lua.h>
+
+void setup_audio(lua_State *L, int honey_tbl);
+
+#endif
diff --git a/src/main.c b/src/main.c
index f73da4c..e11a0c6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2,11 +2,12 @@
 #include <lauxlib.h>
 #include <lualib.h>
 #include <honeysuckle.h>
+#include "audio/audio.h"
 #include "gl/gl.h"
-#include "image/image.h"
 #include "glm/glm.h"
-#include "options/options.h"
+#include "image/image.h"
 #include "logging/logging.h"
+#include "options/options.h"
 
 
 int main(int argc, char **argv)
@@ -24,11 +25,12 @@ int main(int argc, char **argv)
 	/* load honey bindings */
 	lua_createtable(L, 0, 2);
 	int honey_index = lua_gettop(L);
+	setup_audio(L, honey_index);
 	setup_gl(L, honey_index);
-	setup_window(L, honey_index);
-	setup_image(L, honey_index);
 	setup_glm(L, honey_index);
+	setup_image(L, honey_index);
 	setup_logging(L, honey_index);
+	setup_window(L, honey_index);
 	lua_setglobal(L, "honey");
 
 	/* load main script */
-- 
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