int osd_update_audio_stream(INT16 *buffer)
{
// Soundcard switch off?
if (Machine->sample_rate == 0) return samples_per_frame;
Uint32 unBytesQueued = SDL_GetQueuedAudioSize(audio_device);
if (unBytesQueued == 0) {
++fifo_underrun;
// Queue some silence to start buffering
uint8_t silence[bytes_per_frame];
memset(silence, 0, sizeof(silence));
SDL_QueueAudio(audio_device, silence, sizeof(silence));
}
if (unBytesQueued > 10*bytes_per_frame) {
++fifo_overrun;
SDL_ClearQueuedAudio(audio_device);
}
profiler_mark(PROFILER_USER1);
if (attenuation < 0) {
/* FIXME: Need to attenuate the audio stream? */
}
SDL_QueueAudio(audio_device, buffer, bytes_per_frame);
profiler_mark(PROFILER_END);
return samples_per_frame;
}
void SoundSystemImpl::queueAudio()
{
#ifdef IMGUI_ENABLE
const int max_samples = mAudioSpecObtained.samples * mAudioSpecObtained.channels;
const uint32_t bytePerSample = sizeof(float);
SDL_AudioDeviceID audioDeviceID = mAudioDeviceId;
uint32_t alreadyQueuedByte = SDL_GetQueuedAudioSize(audioDeviceID);
int16_t alreadyQueued = numeric_cast<int16_t>(alreadyQueuedByte / bytePerSample);
int16_t toQueue = max_samples - alreadyQueued;
while (g_debug_sample_buffer.max_size() <= g_debug_sample_buffer.size())
{
g_debug_sample_buffer.read();
}
g_debug_sample_buffer.write(mFrameMixer.size());
while (g_debug_required_buffer.max_size() <= g_debug_required_buffer.size())
{
g_debug_required_buffer.read();
}
g_debug_required_buffer.write(toQueue);
#endif
int audioError = SDL_QueueAudio(audioDeviceID, (const void*)mFrameMixer.data(), mFrameMixer.size() * bytePerSample);
if (0 != audioError)
{
printf("Audio queue error %s\n", SDL_GetError());
}
mFrameMixer.clear();
}
int SNDDMA_AvailableCaptureSamples(void)
{
#ifdef USE_SDL_AUDIO_CAPTURE
// divided by 2 to convert from bytes to (mono16) samples.
return sdlCaptureDevice ? (SDL_GetQueuedAudioSize(sdlCaptureDevice) / 2) : 0;
#else
return 0;
#endif
}
int16_t SoundSystemImpl::samplesNeeded() const
{
const int freq = mAudioSpecObtained.freq;
const int max_samples = mAudioSpecObtained.samples * mAudioSpecObtained.channels;
const uint32_t bytePerSample = sizeof(float);
const uint32_t alreadyQueuedByte = SDL_GetQueuedAudioSize(mAudioDeviceId);
const int16_t alreadyQueued = numeric_cast<int16_t>(alreadyQueuedByte / bytePerSample);
const int16_t toQueue = max_samples - alreadyQueued;
return toQueue;
}
static unsigned int S_CaptureDriverUpdate (void* driverContext, unsigned char* buffer, int minBytes, int maxBytes)
{
SDL_AudioDeviceID inputdevid = (SDL_AudioDeviceID)driverContext;
unsigned int available = SDL_GetQueuedAudioSize (inputdevid);
if (available > minBytes) {
return SDL_DequeueAudio (inputdevid, buffer, maxBytes);
}
return 0;
}
void audio_play() {
if (paused) { updateok = true; return; }
bufsize = 2 * channels * (conf.audio_sample_rate / framerate);
if (conf.audio_api == 0) { // SDL
#if SDL_VERSION_ATLEAST(2,0,4)
SDL_QueueAudio(dev, (const void*)audiobuf, bufsize);
// Clear the audio queue arbitrarily to avoid it backing up too far
if (SDL_GetQueuedAudioSize(dev) > (Uint32)(bufsize * 3)) { SDL_ClearQueuedAudio(dev); }
#endif
}
#ifndef _MINGW
else if (conf.audio_api == 1) { // libao
ao_play(aodevice, (char*)audiobuf, bufsize);
}
#endif
updateok = true;
}
bool timing_frameskip() {
// Calculate whether to skip a frame or not
if (conf.audio_api == 0) { // SDL
// Wait until the audio is drained
#if SDL_VERSION_ATLEAST(2,0,4)
while (SDL_GetQueuedAudioSize(dev) > (Uint32)bufsize) {
if (conf.timing_limiter) { SDL_Delay(1); }
}
#endif
}
static int flipper = 1;
if (altspeed) {
if (flipper > 2) { flipper = 0; return false; }
else { flipper++; return true; }
}
return false;
}
void
loop()
{
#ifdef __EMSCRIPTEN__
if (done || (SDL_GetAudioStatus() != SDL_AUDIO_PLAYING)) {
emscripten_cancel_main_loop();
}
else
#endif
{
/* The device from SDL_OpenAudio() is always device #1. */
const Uint32 queued = SDL_GetQueuedAudioSize(1);
SDL_Log("Device has %u bytes queued.\n", (unsigned int) queued);
if (queued <= 8192) { /* time to requeue the whole thing? */
if (SDL_QueueAudio(1, wave.sound, wave.soundlen) == 0) {
SDL_Log("Device queued %u more bytes.\n", (unsigned int) wave.soundlen);
} else {
SDL_Log("Device FAILED to queue %u more bytes: %s\n", (unsigned int) wave.soundlen, SDL_GetError());
}
}
}
}
int
main(int argc, char *argv[])
{
int i;
char filename[4096];
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
/* Load the SDL library */
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return (1);
}
if (argc > 1) {
SDL_strlcpy(filename, argv[1], sizeof(filename));
} else {
SDL_strlcpy(filename, "sample.wav", sizeof(filename));
}
/* Load the wave file into memory */
if (SDL_LoadWAV(filename, &wave.spec, &wave.sound, &wave.soundlen) == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s\n", filename, SDL_GetError());
quit(1);
}
wave.spec.callback = NULL; /* we'll push audio. */
#if HAVE_SIGNAL_H
/* Set the signals */
#ifdef SIGHUP
signal(SIGHUP, poked);
#endif
signal(SIGINT, poked);
#ifdef SIGQUIT
signal(SIGQUIT, poked);
#endif
signal(SIGTERM, poked);
#endif /* HAVE_SIGNAL_H */
/* Initialize fillerup() variables */
if (SDL_OpenAudio(&wave.spec, NULL) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open audio: %s\n", SDL_GetError());
SDL_FreeWAV(wave.sound);
quit(2);
}
/*static x[99999]; SDL_QueueAudio(1, x, sizeof (x));*/
/* Let the audio run */
SDL_PauseAudio(0);
/* Note that we stuff the entire audio buffer into the queue in one
shot. Most apps would want to feed it a little at a time, as it
plays, but we're going for simplicity here. */
while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING))
{
/* The device from SDL_OpenAudio() is always device #1. */
const Uint32 queued = SDL_GetQueuedAudioSize(1);
SDL_Log("Device has %u bytes queued.\n", (unsigned int) queued);
if (queued <= 8192) { /* time to requeue the whole thing? */
if (SDL_QueueAudio(1, wave.sound, wave.soundlen) == 0) {
SDL_Log("Device queued %u more bytes.\n", (unsigned int) wave.soundlen);
} else {
SDL_Log("Device FAILED to queue %u more bytes: %s\n", (unsigned int) wave.soundlen, SDL_GetError());
}
}
SDL_Delay(100); /* let it play for awhile. */
}
/* Clean up on signal */
SDL_CloseAudio();
SDL_FreeWAV(wave.sound);
SDL_Quit();
return 0;
}
//******************************************************* MAIN *******************************
int main(int argc, char* argv[]){
//set up sdl
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
SDL_Window *Window = SDL_CreateWindow("Handmade Hero",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
640, 480, SDL_WINDOW_RESIZABLE);
if(Window){
SDL_Renderer *Renderer = SDL_CreateRenderer(Window, -1, 0);
if(Renderer){
// VIDEO
sdl_offscreen_buffer Buffer = {}; // if non-initialized, declaring variables in a loop fails on SDLResizeTexture with a pointer error - im blaming the compiler
sdl_window_dimension Dimension = SDLGetWindowDimension(Window);
SDLResizeTexture(&Buffer, Renderer, Dimension.Width, Dimension.Height);
keystates Keys = {};
//AUDIO
sdl_sound_output sound_output = sdl_sound_outputH(48000);
//open audio
SDLInitAudio(sound_output.SamplesPerSecond, sound_output.SamplesPerSecond * sound_output.BytesPerSample / 60);
SDL_PauseAudio(0);
//BW: state area allocation
void *new_state_area = malloc(128*1024*1024);//need ~2 MB at least; give it 128 MiB -- 2MB for video; dont know audio
void *prev_state_area = malloc(1024);// should be sizeof(state0), or sizeof(biggest statetype) later
//apparently we didnt have enough memory, but only crashed sometimes? this fixed it
void *state;
{
uint8 *next_ptr = (uint8*)prev_state_area;
anim_comp *animation = (anim_comp*)next_ptr;
next_ptr += sizeof(anim_comp);
init_anim_comp(animation, 0,0);
state0 *stateptr = (state0*)next_ptr;
printf("state0 size %ld\n", sizeof(state0));
uint64 stateptrn = (uint64)stateptr;
uint64 sizeptr = (uint64)&(stateptr->size);
uint64 deepc_ptr = (uint64)&(stateptr->deep_count);
uint64 anim_ptr = (uint64)&(stateptr->animation);
uint64 tsine_ptr = (uint64)&(stateptr->tSine);
uint64 tvol_ptr = (uint64)&(stateptr->ToneVolume);
uint64 thz_ptr = (uint64)&(stateptr->ToneHz);
uint64 pu_ptr = (uint64)&(stateptr->pitch_up_was_pressed);
printf("offset begin %lu\n", sizeptr - stateptrn);
printf("width of size %lu\n", deepc_ptr - sizeptr);
printf("width of deepc %lu\n", anim_ptr - deepc_ptr);
printf("width of animpt %lu\n", tsine_ptr - anim_ptr);
printf("width of tsine %lu\n", tvol_ptr - tsine_ptr);
printf("width of tvol %lu\n", thz_ptr - tvol_ptr);
printf("width of thz %lu\n", pu_ptr - thz_ptr);
next_ptr += sizeof(state0);
init_state0(stateptr, animation, 3000, 256, 0);
state = stateptr;
//return 0;
}
uint64 LastCounter = SDL_GetPerformanceCounter();
uint64 LastCycleCount = _rdtsc();
uint64 PerfCountFrequency = SDL_GetPerformanceFrequency();
bool running = true;
//main loop
printf("enter main event loop\n");
while(running){
///////NP_UPDATE/////////////
//event capturing
event_return events = eventHandler(&Keys);
if(events.shouldQuit) running = false;
//setup for p
state_window_info Wi = {}; Wi.Height = Buffer.Height; Wi.Width = Buffer.Width; Wi.Pitch = Buffer.Pitch;
int TargetQueueBytes = sound_output.LatencySampleCount * sound_output.BytesPerSample;
state_sound_info Si = {}; Si.BytesToGet = TargetQueueBytes - SDL_GetQueuedAudioSize(1); Si.BytesPerSample = sound_output.BytesPerSample; Si.SamplesPerSecond = sound_output.SamplesPerSecond;
uint64 state_size = 0;
uint64 vbuffer_size = Buffer.Height * Buffer.Pitch;
uint64 abuffer_size = Si.BytesToGet;
state_return next;
{ //in case(statetype) or similar
next = P_update_state0(*(state0*)state, new_state_area, Keys, Wi, Si);
//p should return state_size? and also, what statetype we are in -> later
state_size = sizeof(state0);
}
//GARBAGE COLLECTOR
//move this state to previous state
//fmemcpy(prev_state_area, new_state_area, state_size); //shallow copy, as supposed
//printf("hi\n");
deepcopy(prev_state_area, next.state, new_state_area, (uint8*)new_state_area + 128*1024*1024);
//TODO(md): DEEPCPY
//queue audio
if (Si.BytesToGet > 0) SDL_QueueAudio(1, next.abuffer, abuffer_size);
//render
SDLUpdateWindow(Window, Renderer, Buffer, next.vbuffer);
uint64 EndCycleCount = _rdtsc();
uint64 EndCounter = SDL_GetPerformanceCounter();
uint64 CounterElapsed = EndCounter - LastCounter;
uint64 CyclesElapsed = EndCycleCount - LastCycleCount;
real64 MSPerFrame = (((1000.0f * (real64)CounterElapsed) / (real64)PerfCountFrequency));
real64 FPS = (real64)PerfCountFrequency / (real64)CounterElapsed;
real64 MCPF = ((real64)CyclesElapsed / (1000.0f * 1000.0f));
printf("%.02fms/f, %.02f/s, %.02fmc/f\n", MSPerFrame, FPS, MCPF);
LastCycleCount = EndCycleCount;
LastCounter = EndCounter;
}
} } //if(Renderer, Window)
SDL_Quit();
return 0;
}
void loop(NES nesSystem, const char * fileLoc) {
if (!init_sdl(fileLoc)) {
std::cerr << "SDL did not initialize, quitting" << std::endl;
return;
}
Debugger debugger(&nesSystem);
//game loop variables
double frequency = SDL_GetPerformanceFrequency();
uintmax_t startTime = SDL_GetPerformanceCounter();
bool paused = true;
SDL_Event event;
for (int x = 0; x < 256 * 240; x++) localPixels[x] = 0;
draw(nesSystem.m_nesCPU.m_nesPPU.m_pixels); //draw screen black
SDL_PauseAudioDevice(sdlAudioDevice, 0); //unpause audio
for (;;) {
//1 process events
if (!process_events(&event, &nesSystem.m_nesCPU.m_controllerByte, &paused)) {
break;
}
//2 logic
if (!paused) {
do {
enum DebuggerEventStatus debugEventStatus = debugger.pre_instr_events();
if (debugEventStatus == BREAK_HIT || debugEventStatus == CRASH_IMMINENT) {
paused = true;
break;
} else if (debugEventStatus == DONE_LOGGED_EXECUTION) {
paused = true;
}
//execute one cpu opcode
nesSystem.m_nesCPU.execute_next_opcode();
debugger.post_instr_events();
//ppu catches up
nesSystem.m_nesCPU.m_nesPPU.tick(&nesSystem.m_nesCPU.m_NMI, &nesSystem.m_nesCPU.m_cpuClock);
} while (!nesSystem.m_nesCPU.m_nesPPU.m_draw && !paused);
//3.1 audio
nesSystem.m_nesCPU.m_nesAPU.fill_buffer(&nesSystem, &nesSystem.m_nesCPU.m_IRQ);
if (SDL_GetQueuedAudioSize(sdlAudioDevice) > (unsigned int) nesSystem.m_nesCPU.m_nesAPU.m_audioBufferSize * 10) {
//prevents audio from becoming too out of sync
SDL_ClearQueuedAudio(sdlAudioDevice);
}
SDL_QueueAudio(sdlAudioDevice, (void *) nesSystem.m_nesCPU.m_nesAPU.m_audioBuffer, nesSystem.m_nesCPU.m_nesAPU.m_audioBufferSize);
} else {
enum DebuggerCommandStatus commandStatus;
do {
commandStatus = debugger.cmd();
} while (commandStatus == CONTINUE_DEBUG);
//SDL_FlushEvents(SDL_USEREVENT, SDL_LASTEVENT);
if (commandStatus == RUN_NO_FOCUS) {
paused = false;
} else if (commandStatus == QUIT) {
break;
} else if (commandStatus == RUN_RETURN_FOCUS) {
paused = false;
SDL_RaiseWindow(window);
} else {
break;
}
}
//3.2 video
draw(nesSystem.m_nesCPU.m_nesPPU.m_pixels);
//4 sync framerate
double delay = MILLISECONDS_PER_FRAME - (((SDL_GetPerformanceCounter() - startTime) / frequency) * 1000) - 0.5;
if (delay > 0) {
std::this_thread::sleep_for(std::chrono::microseconds((int) (delay * 1000)));
}
while ((((SDL_GetPerformanceCounter() - startTime) / frequency) * 1000) < MILLISECONDS_PER_FRAME) {
}
startTime = SDL_GetPerformanceCounter();
}
SDL_PauseAudioDevice(sdlAudioDevice, 1); //pause
SDL_ClearQueuedAudio(sdlAudioDevice); //clear audio queue
close_sdl();
return;
}
