//! [static] factory
Source * Source::create() {
checkErrorStatus(__FILE__, __LINE__);
uint32_t sourceId;
alGenSources( 1, &sourceId );
if(!checkErrorStatus(__FILE__, __LINE__, "Could not create Source.") || sourceId==0 ){
return nullptr;
}
return new Source(sourceId);
}
void Source::dequeueBuffers(int num){
checkErrorStatus(__FILE__, __LINE__);
auto removedBuffers=new ALuint[num];
alSourceUnqueueBuffers(sourceId,num,removedBuffers);
delete []removedBuffers;
if(checkErrorStatus(__FILE__, __LINE__, "Source::dequeueBuffers")){ // successful?
buffers.erase(buffers.begin(),buffers.begin()+num);
}
}
//! [static]
bool initSoundSystem(){
if(myContext != nullptr) { // already initialized?
return true;
}
// Open the default device
myDevice = alcOpenDevice(nullptr);
checkALCErrorStatus(__FILE__, __LINE__, myDevice);
if(myDevice == nullptr) {
return false;
}
// Create Context
myContext = alcCreateContext(myDevice, nullptr);
checkALCErrorStatus(__FILE__, __LINE__, myDevice);
if(myContext == nullptr) {
return false;
}
alcMakeContextCurrent(myContext);
checkALCErrorStatus(__FILE__, __LINE__, myDevice);
if(!checkErrorStatus(__FILE__, __LINE__, "initSoundSystem()")){
shutDownSoundSystem();
return false;
}
return true;
}
//! [static] factory
Buffer * createSilence(unsigned int freq,unsigned int size) {
Util::Reference<Buffer> b(Buffer::create());
if(b.isNull())
return nullptr;
const std::vector<uint8_t> data(size, 128);
b->setData(AL_FORMAT_MONO8, data.data(), data.size(), freq);
return checkErrorStatus(__FILE__, __LINE__) ? b.detachAndDecrease() : nullptr;
}
int ShaderManager::compileShaders(GLuint type, std::string &directory)
{
//Open the file
std::ifstream file;
file.open(directory.c_str(), std::ios::in);
if(!file)
{
std::cout << directory + " could not be opened, no shaders loaded!" << std::endl;
return -1;
}
std::string filename;
GLuint shaderObject;
GLchar *source;
int len;
//Opened, now read in the type and file name
while(file.good())
{
//Load files into memory
file >> filename;
directory = project_mode_string + "Shaders\\" + filename;
std::cout << "--------------------------------------------" << std::endl;
std::cout << filename << ":" << std::endl;
int err = loadFile(type, directory.c_str(), &source, &len);
if(err)
continue;
//create shader objects
shaderObject = glCreateShader(type); //Could be a vertex or fragment shader, it uses the TYPE
//CONST STUFF so annoying
const char *csource = source;
const GLchar **p_source = &csource;
glShaderSource(shaderObject, 1, p_source, &len);
//Compile shader file
glCompileShader(shaderObject);
//Check if it compiled correctly
err = checkErrorStatus(shaderObject, GL_COMPILE_STATUS);
if(err)
continue;
std::cout << "Shader of type " << type << " compiled correctly: " << filename << std::endl;
//Add it to the vector
if(type == GL_VERTEX_SHADER)
compiled_vertex_shaders.push_back(shaderObject);
else
compiled_fragment_shaders.push_back(shaderObject);
}
std::cout << "--------------------------------------------" << std::endl;
file.close();
return 0;
}
//! [static] factory
Buffer * createNoise(unsigned int freq, unsigned int size) {
Util::Reference<Buffer> b(Buffer::create());
if(b.isNull())
return nullptr;
std::vector<uint8_t> noise;
noise.reserve(size);
unsigned int j = 1;
for (unsigned int i = 0; i < size; ++i) {
j = (j * 1234393 + i) % 0xffffff;
noise.push_back(static_cast<uint8_t>(j) % 256);
}
b->setData(AL_FORMAT_MONO8, noise.data(), noise.size(),freq);
return checkErrorStatus(__FILE__, __LINE__) ? b.detachAndDecrease() : nullptr;
}
int ShaderManager::createPrograms()
{
std::string directory = project_mode_string + "programs.txt";
std::ifstream file;
file.open(directory.c_str(), std::ios::in);
if(!file)
{
std::cout << directory + " could not be opened, no shaders created!" << std::endl;
return -1;
}
std::string prog_name;
int v_shader, f_shader;
while(file.good() && !file.eof())
{
file >> prog_name;
file >> v_shader;
file >> f_shader;
if(v_shader >= (int)(compiled_vertex_shaders.size()) || f_shader >= ((int)compiled_fragment_shaders.size()))
{
std::cout << "Could not link a program with values " << v_shader << ", " << f_shader << std::endl;
continue;
}
GLuint program = glCreateProgram();
glAttachShader(program, compiled_vertex_shaders[v_shader]);
glAttachShader(program, compiled_fragment_shaders[f_shader]);
glLinkProgram(program);
int err = checkErrorStatus(program, GL_LINK_STATUS);
if(err)
continue;
std::cout << prog_name << " - " << v_shader << ", " << f_shader << " linked correctly" << std::endl;
shader_programs[prog_name] = program;
}
for(unsigned i = 0; i < compiled_vertex_shaders.size(); i++)
{
glDeleteShader(compiled_vertex_shaders[i]);
}
for(unsigned i = 0; i < compiled_fragment_shaders.size(); i++)
{
glDeleteShader(compiled_fragment_shaders[i]);
}
compiled_vertex_shaders.clear();
compiled_fragment_shaders.clear();
return 0;
}
//! [static] factory
Buffer * createRectangleSound(unsigned int width, unsigned int freq, unsigned int size) {
Util::Reference<Buffer> b(Buffer::create());
if(b.isNull())
return nullptr;
std::vector<uint8_t> noise;
noise.reserve(size);
uint8_t value = 0;
for (unsigned int i = 0; i < size; ++i) {
if(i % width == 0) {
value = 255 - value;
}
noise.push_back(value);
}
b->setData(AL_FORMAT_MONO8, noise.data(), noise.size(), freq);
return checkErrorStatus(__FILE__, __LINE__) ? b.detachAndDecrease() : nullptr;
}
//! [static] factory
Buffer * loadWAV(const std::string & filename) {
Util::Reference<Buffer> b(Buffer::create());
if(b.isNull())
return nullptr;
SDL_AudioSpec wav_spec;
Uint32 wav_length;
Uint8 *wav_buffer;
if ( SDL_LoadWAV(filename.c_str(), &wav_spec, &wav_buffer, &wav_length) == nullptr ) {
WARN("Could not open : "+ filename+ std::string( SDL_GetError()) );
return nullptr;
}
unsigned int format=0;
unsigned int freq = static_cast<unsigned int>(wav_spec.freq);
if (wav_spec.format == AUDIO_U8 ) {
if (wav_spec.channels==1)
format=AL_FORMAT_MONO8;
else
format=AL_FORMAT_STEREO8;
} else if (wav_spec.format == AUDIO_S16SYS ) {
if (wav_spec.channels==1)
format=AL_FORMAT_MONO16;
else
format=AL_FORMAT_STEREO16;
}
if (format==0) {
WARN("Uninplemented WAV-format. Please add conversion routine ;).");
return nullptr;
} else
b->setData(format,wav_buffer,wav_length,freq);
// b->setData(AL_FORMAT_MONO8,noise,size,freq);
SDL_FreeWAV(wav_buffer);
return checkErrorStatus(__FILE__, __LINE__) ? b.detachAndDecrease() : nullptr;
}
