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love / src / modules / sound / wrap_Sound.cpp

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/**
 * Copyright (c) 2006-2013 LOVE Development Team
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 **/

#include "wrap_Sound.h"

// Implementations.
#include "lullaby/Sound.h"

namespace love
{
namespace sound
{

static Sound *instance = 0;

int w_newSoundData(lua_State *L)
{
	SoundData *t = 0;

	if (lua_isnumber(L, 1))
	{
		int samples = luaL_checkint(L, 1);
		int sampleRate = luaL_optint(L, 2, Decoder::DEFAULT_SAMPLE_RATE);
		int bits = luaL_optint(L, 3, Decoder::DEFAULT_BITS);
		int channels = luaL_optint(L, 4, Decoder::DEFAULT_CHANNELS);

		try
		{
			t = instance->newSoundData(samples, sampleRate, bits, channels);
		}
		catch(love::Exception &e)
		{
			return luaL_error(L, e.what());
		}

	}
	// Must be string or decoder.
	else
	{

		// Convert to Decoder, if necessary.
		if (!luax_istype(L, 1, SOUND_DECODER_T))
		{
			w_newDecoder(L);
			lua_replace(L, 1);
		}

		try
		{
			t = instance->newSoundData(luax_checkdecoder(L, 1));
		}
		catch(love::Exception &e)
		{
			return luaL_error(L, e.what());
		}
	}

	luax_newtype(L, "SoundData", SOUND_SOUND_DATA_T, (void *)t);

	return 1;
}

int w_newDecoder(lua_State *L)
{
	// Convert to File, if necessary.
	if (lua_isstring(L, 1))
		luax_convobj(L, 1, "filesystem", "newFile");

	love::filesystem::FileData *data;
	if (luax_istype(L, 1, FILESYSTEM_FILE_T))
	{
		love::filesystem::File *file = luax_checktype<love::filesystem::File>(L, 1, "File", FILESYSTEM_FILE_T);
		data = file->read();
	}
	else
	{
		data = luax_checktype<love::filesystem::FileData>(L, 1, "FileData", FILESYSTEM_FILE_DATA_T);
		data->retain();
	}

	int bufferSize = luaL_optint(L, 2, Decoder::DEFAULT_BUFFER_SIZE);

	try
	{
		Decoder *t = instance->newDecoder(data, bufferSize);
		data->release();
		if (t == 0)
			return luaL_error(L, "Extension \"%s\" not supported.", data->getExtension().c_str());
		luax_newtype(L, "Decoder", SOUND_DECODER_T, (void *)t);
	}
	catch(love::Exception &e)
	{
		data->release();
		return luaL_error(L, e.what());
	}

	return 1;
}

// List of functions to wrap.
static const luaL_Reg functions[] =
{
	{ "newSoundData",  w_newSoundData },
	{ "newDecoder",  w_newDecoder },
	{ 0, 0 }
};

static const lua_CFunction types[] =
{
	luaopen_sounddata,
	luaopen_decoder,
	0
};

extern "C" int luaopen_love_sound(lua_State *L)
{
	if (instance == 0)
	{
		try
		{
			instance = new lullaby::Sound();
		}
		catch(Exception &e)
		{
			return luaL_error(L, e.what());
		}
	}
	else
		instance->retain();


	WrappedModule w;
	w.module = instance;
	w.name = "sound";
	w.flags = MODULE_SOUND_T;
	w.functions = functions;
	w.types = types;

	return luax_register_module(L, w);
}

} // sound
} // love