bool Init(int freq, int channels, int blockSize, std::function<int(int16_t* data, int nSamples)> update)
{
this->update = update;
SDL_AudioSpec fmt;
memset(&fmt, 0, sizeof(SDL_AudioSpec));
memset(&spec, 0, sizeof(SDL_AudioSpec));
fmt.freq = freq;
fmt.format = AUDIO_S16LSB;
fmt.channels = channels;
fmt.samples = blockSize;
fmt.callback = SdlCallback;
fmt.userdata = this;
if(SDL_OpenAudio(&fmt, &spec) != 0)
return false;
FlogExpD(spec.freq);
FlogExpD((int)spec.channels);
FlogExpD(spec.samples);
return true;
}
void SendArguments(Plugin& plugin){
FlogExpD(Str(plugin.args.size()));
plugin.messageQueue->WriteMessage("arguments", Str(plugin.args.size()));
for(auto& arg : plugin.args){
FlogExpD(std::get<0>(arg));
FlogExpD(std::get<1>(arg));
plugin.messageQueue->WriteMessage(std::get<0>(arg), std::get<1>(arg));
}
}
void Open(const std::string& filename, bool rw)
{
std::string mode = rw ? "rb" : "rwb";
f = fopen(filename.c_str(), mode.c_str());
FlogExpD(filename);
if(!f)
throw StreamEx(Str("could not open file: " << filename));
fseek(f, 0, SEEK_END);
fileSize = ftell(f);
fseek(f, 0, SEEK_SET);
this->filename = filename;
int size = FF_INPUT_BUFFER_PADDING_SIZE + 1024 * 32;
buffer = (unsigned char*)av_mallocz(size);
if(buffer == NULL)
throw StreamEx("failed to allocate RAM");
ctx = GenAVIOContext(buffer, size, rw);
if(ctx == NULL)
throw StreamEx("failed to allocate RAM");
}
void StartSession(const std::string& shmName, PlatformPtr platform, IpcMessageQueuePtr hostQueue){
for(auto& plugin : plugins){
try {
std::string messageQueueName = UuidGenerator::Create()->GenerateUuid(RandChar::Create());
FlogExpD(messageQueueName);
plugin.messageQueue = IpcMessageQueue::Create(messageQueueName, 2, 1024 * 1024 * 32, 4, 1024 * 16);
plugin.process = platform->StartProcess(plugin.executable, {messageQueueName, shmName}, plugin.directory);
plugin.started = true;
SendArguments(plugin);
} catch (PlatformEx e) {
FlogE("could not start plugin: " << plugin.executable << " because: " << e.GetMsg());
plugin.started = false;
hostQueue->WriteMessage(Str("error -1 " << plugin.name), "could not start process");
}
}
}
