add initial audio bindings

7 files changed, 110 insertions, 9 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b428197..03e227b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,6 +17,7 @@ include_directories(
 	${LIB_ROOT}/honeysuckle/src
 	${LIB_ROOT}/glfw-3.3.8/include
 	${LIB_ROOT}/cglm/include
+	${LIB_ROOT}/miniaudio
 )
 
 # disable byte-alignment in cglm
@@ -42,7 +43,7 @@ set(LIBRARIES lua5.1 honeysuckle glfw cargs)
 if (WIN32)
 	set(LIBRARIES ${LIBRARIES} opengl32)
 else()
-	set(LIBRARIES ${LIBRARIES} GL dl m)
+	set(LIBRARIES ${LIBRARIES} GL dl pthread m)
 endif()
 target_link_libraries(honey ${LIBRARIES})
 
@@ -59,10 +60,11 @@ set_target_properties(test PROPERTIES
 target_link_libraries(test lua5.1 honeysuckle glfw dl)
 
 
+add_subdirectory(${SRC_ROOT}/audio)
 add_subdirectory(${SRC_ROOT}/gl)
-add_subdirectory(${SRC_ROOT}/logging)
-add_subdirectory(${SRC_ROOT}/image)
-add_subdirectory(${SRC_ROOT}/util)
-add_subdirectory(${SRC_ROOT}/test)
 add_subdirectory(${SRC_ROOT}/glm)
+add_subdirectory(${SRC_ROOT}/image)
+add_subdirectory(${SRC_ROOT}/logging)
 add_subdirectory(${SRC_ROOT}/options)
+add_subdirectory(${SRC_ROOT}/test)
+add_subdirectory(${SRC_ROOT}/util)
diff --git a/demo/example_sound.ogg b/demo/example_sound.ogg
new file mode 100644
index 0000000..5f97755
--- /dev/null
+++ b/demo/example_sound.ogg
diff --git a/demo/honey.lua b/demo/honey.lua
index 9d007e5..f7b4392 100644
--- a/demo/honey.lua
+++ b/demo/honey.lua
@@ -2,6 +2,12 @@ local gl = honey.gl
 local window = honey.window
 
 
+--===== initialize audio =====--
+
+local engine = honey.audio.engine_init()
+honey.audio.engine_play_sound(engine, 'example_sound.ogg')
+
+
 --====== initialize opengl ======--
 
 gl.Init()
@@ -196,5 +202,9 @@ while not window.shouldClose(w) do
 	window.swapBuffers(w)
 	window.pollEvents()
 end
+
+--===== shut down =====--
+
 window.destroy(w)
 gl.Terminate()
+honey.audio.engine_uninit(engine)
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 */