Data:clone ported to minor

minor tweaks

--HG--
branch : minor

src/modules/sound/SoundData.cpp

@@ -108,12 +108,27 @@ SoundData::SoundData(void *d, int samples, int sampleRate, int bitDepth, int cha
 	load(samples, sampleRate, bitDepth, channels, d);
 }
 
+SoundData::SoundData(const SoundData &c)
+	: data(0)
+	, size(0)
+	, sampleRate(0)
+	, bitDepth(0)
+	, channels(0)
+{
+	load(c.getSampleCount(), c.getSampleRate(), c.getBitDepth(), c.getChannels(), c.getData());
+}
+
 SoundData::~SoundData()
 {
 	if (data != 0)
 		free(data);
 }
 
+Data *SoundData::clone() const
+{
+	return new SoundData(*this);
+}
+
 void SoundData::load(int samples, int sampleRate, int bitDepth, int channels, void *newData)
 {
 	if (samples <= 0)

src/modules/sound/SoundData.h

@@ -40,10 +40,12 @@ public:
 	SoundData(Decoder *decoder);
 	SoundData(int samples, int sampleRate, int bitDepth, int channels);
 	SoundData(void *d, int samples, int sampleRate, int bitDepth, int channels);
+	SoundData(const SoundData &c);
 
 	virtual ~SoundData();
 
 	// Implements Data.
+	Data *clone() const;
 	void *getData() const;
 	size_t getSize() const;
 

src/modules/sound/wrap_SoundData.cpp

@@ -42,6 +42,15 @@ SoundData *luax_checksounddata(lua_State *L, int idx)
 	return luax_checktype<SoundData>(L, idx);
 }
 
+int w_SoundData_clone(lua_State *L)
+{
+	SoundData *t = luax_checksounddata(L, 1)*c = nullptr;
+	luax_catchexcept(L, [&](){ c = (SoundData*)t->clone(); });
+	luax_pushtype(L, c);
+	c->release();
+	return 1;
+}
+
 int w_SoundData_getChannels(lua_State *L)
 {
 	SoundData *t = luax_checksounddata(L, 1);
@@ -98,6 +107,7 @@ int w_SoundData_getSample(lua_State *L)
 
 static const luaL_Reg w_SoundData_functions[] =
 {
+	{ "clone", w_SoundData_clone },
 	{ "getChannels", w_SoundData_getChannels },
 	{ "getBitDepth", w_SoundData_getBitDepth },
 	{ "getSampleRate", w_SoundData_getSampleRate },