/**\brief Audio system shutdown.
*/
bool Audio::Shutdown( void ){
/* This is the cleaning up part */
this->HaltAll();
#if defined(SDL_MIXER_MAJOR_VERSION) && (SDL_MIXER_MAJOR_VERSION>1) \
&& (SDL_MIXER_MINOR_VERSON>2) && (SDL_MIXER_PATCHLEVEL>=10)
// Free every library loaded
const SDL_version *mix_version=Mix_Linked_Version();
if( (mix_version->major>=1) && (mix_version->minor>=2) && (mix_version->patch>=10) ){
while(Mix_Init(0))
Mix_Quit();
}
#endif // SDL_Mixer version requirements
// Query number of times audio device was opened (should be 1)
int freq, chan, ntimes;
Uint16 format;
if ( (ntimes = Mix_QuerySpec( &freq, &format, &chan )) != 1 )
LogMsg(WARN,"Audio was initialized multiple times.");
// Close as many times as opened.
for ( int i = 0; i < ntimes; i++ )
Mix_CloseAudio();
return true;
}
AudioSDLMixer::AudioSDLMixer(AudioConfig &sc)
: Audio(sc), audio_open(0), music(NULL), oldPlaying(false)
{
if ( SDL_InitSubSystem(SDL_INIT_AUDIO) < 0 )
throw std::runtime_error(std::string("Couldn't initialize SDL: ")+SDL_GetError());
/* Open the audio device */
int audio_rate = m_sc.srate;
Uint16 audio_format=AUDIO_S8;
if (m_sc.sbits==16)
audio_format=AUDIO_S16;
int audio_channels=1;
if (m_sc.stereo) audio_channels=2;
int audio_buffers = m_sc.sbuffers;
if (Mix_OpenAudio(audio_rate, audio_format, audio_channels, audio_buffers) < 0) {
throw std::runtime_error(std::string("Couldn't open audio: ")+SDL_GetError());
} else {
Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
/* printf("Opened audio at %d Hz %d bit %s, %d bytes audio buffer\n", audio_rate,
(audio_format&0xFF),
(audio_channels > 1) ? "stereo" : "mono",
audio_buffers ); */
}
audio_open = 1;
/* Set the external music player, if any */
// TODO: perhaps we should not use this for security reasons
Mix_SetMusicCMD(getenv("MUSIC_CMD"));
}
/**
* @brief Loads a sound into the sound_list.
*
* @param filename Name fo the file to load.
* @return The SDL_Mixer of the loaded chunk.
*
* @sa sound_makeList
*/
int sound_mix_load( alSound *s, const char *filename )
{
SDL_RWops *rw;
int freq, bytes, channels;
Uint16 format;
/* get the file data buffer from packfile */
rw = ndata_rwops( filename );
/* bind to buffer */
s->u.mix.buf = Mix_LoadWAV_RW(rw,1);
if (s->u.mix.buf == NULL) {
DEBUG("Unable to load sound '%s': %s", filename, Mix_GetError());
return -1;
}
/* Get spec. */
Mix_QuerySpec( &freq, &format, &channels );
switch (format) {
case AUDIO_U8:
case AUDIO_S8:
bytes = 1;
break;
default:
bytes = 2;
break;
}
/* Set length. */
s->length = (double)s->u.mix.buf->alen / (double)(freq*bytes*channels);
return 0;
}
/**
* @brief Prints the current and compiled SDL_Mixer versions.
*/
static void print_MixerVersion (void)
{
int frequency;
Uint16 format;
int channels;
SDL_version compiled;
const SDL_version *linked;
char device[PATH_MAX];
/* Query stuff. */
Mix_QuerySpec(&frequency, &format, &channels);
MIX_VERSION(&compiled);
linked = Mix_Linked_Version();
SDL_AudioDriverName(device, PATH_MAX);
/* Version itself. */
DEBUG("SDL_Mixer Started: %d Hz %s", frequency,
(channels == 2) ? "Stereo" : "Mono" );
/* Check if major/minor version differ. */
if ((linked->major*100 + linked->minor) > compiled.major*100 + compiled.minor)
WARN("SDL_Mixer is newer than compiled version");
if ((linked->major*100 + linked->minor) < compiled.major*100 + compiled.minor)
WARN("SDL_Mixer is older than compiled version.");
/* Print other debug info. */
DEBUG("Renderer: %s",device);
DEBUG("Version: %d.%d.%d [compiled: %d.%d.%d]",
compiled.major, compiled.minor, compiled.patch,
linked->major, linked->minor, linked->patch);
DEBUG();
}
void initSound() {
int audio_rate;
Uint16 audio_format;
int audio_channels;
int audio_buffers;
if ( SDL_InitSubSystem(SDL_INIT_AUDIO) < 0 ) {
fprintf(stderr, "Unable to initialize SDL_AUDIO: %s\n", SDL_GetError());
return;
}
audio_rate = 44100;
audio_format = AUDIO_S16;
audio_channels = 1;
audio_buffers = 4096;
if (Mix_OpenAudio(audio_rate, audio_format, audio_channels, audio_buffers) < 0) {
fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
return;
} else {
Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
}
useAudio = 1;
loadSounds();
}
static dboolean SDLIsInitialized(void)
{
int freq, channels;
Uint16 format;
return (!!Mix_QuerySpec(&freq, &format, &channels));
}
/**\brief Audio system initialization.
*/
bool Audio::Initialize( void ) {
if( initialized ) {
return false;
}
if(OPTION(bool, "options/sound/disable-audio")) {
LogMsg(INFO, "Not initializing audio as it is disabled.");
return true; // audio is disabled
}
if(SDL_Init(SDL_INIT_AUDIO) < 0) {
LogMsg(ERR, "SDL could not initialize audio: %s", SDL_GetError());
return false;
}
if(Mix_OpenAudio(this->audio_rate, this->audio_format, this->audio_channels, this->audio_buffers)) {
LogMsg(ERR, "Audio initialization failed!: %s", Mix_GetError());
return false;
}
Mix_QuerySpec(&this->audio_rate, &this->audio_format, &this->audio_channels);
LogMsg(DEBUG, "SDL_mixer gave us rate %d, format %d, channels %d", this->audio_rate, this->audio_format, this->audio_channels);
// Load MOD and OGG libraries
Mix_Init( MIX_INIT_MOD | MIX_INIT_OGG );
// Allocate channels
Mix_AllocateChannels( this->max_chan);
assert( this->max_chan == static_cast<unsigned int>(this->GetTotalChannels()) );
return true;
}
/**\brief Audio system shutdown.
*/
bool Audio::Shutdown( void ) {
if(OPTION(bool, "options/sound/disable-audio")) {
return true; // audio is disabled
}
/* Halt all currently playing sounds */
Mix_HaltChannel( -1 );
// Free every library loaded
while(Mix_Init(0)) {
Mix_Quit();
}
// Query number of times audio device was opened (should be 1)
int freq, chan, ntimes;
Uint16 format;
ntimes = Mix_QuerySpec( &freq, &format, &chan );
LogMsg(DEBUG, "Audio Query: %d Frequencies, Format: %d, Channels: %s.", freq, format, (chan==2?"Stereo":"Mono"));
if(ntimes != 1 ) {
LogMsg(WARN, "Audio was initialized %d times.", ntimes);
}
// Close only if open
if( ntimes ) {
Mix_CloseAudio();
}
return true;
}
static bool start_sound_engine()
{
/* This is where we open up our audio device. Mix_OpenAudio takes
as its parameters the audio format we'd /like/ to have. */
if(Mix_OpenAudio(info.rate, info.format, info.channels, info.buffers))
{
GB.Error("Unable to open audio");
return TRUE;
}
if (pipe(_ch_pipe))
{
GB.Error("Unable to initialize channel pipe");
return TRUE;
}
Mix_QuerySpec(&info.rate, &info.format, &info.channels);
//fprintf(stderr, "Mix_QuerySpec: %d %d %d\n", info.rate, info.format, info.channels);
channel_count = Mix_AllocateChannels(-1);
Mix_ChannelFinished(channel_finished);
return FALSE;
}
void SoundManager::ShutdownMix()
{
// for each Mix_OpenAudio call, there must be corresponding Mix_CloseAudio call
int numOpen = Mix_QuerySpec(nullptr, nullptr, nullptr);
for (int i = 0; i < numOpen; ++i)
Mix_CloseAudio();
}
/**\brief Audio system shutdown.
*/
bool Audio::Shutdown( void ){
/* This is the cleaning up part */
this->HaltAll();
#if defined(SDL_MIXER_MAJOR_VERSION) && (SDL_MIXER_MAJOR_VERSION>1) \
&& (SDL_MIXER_MINOR_VERSON>2) && (SDL_MIXER_PATCHLEVEL>=10)
// Free every library loaded
const SDL_version *mix_version=Mix_Linked_Version();
if( (mix_version->major>=1) && (mix_version->minor>=2) && (mix_version->patch>=10) ){
while(Mix_Init(0))
Mix_Quit();
}
#endif // SDL_Mixer version requirements
// Query number of times audio device was opened (should be 1)
int freq, chan, ntimes;
Uint16 format;
ntimes = Mix_QuerySpec( &freq, &format, &chan );
LogMsg(INFO,"Audio Query: %d Frequencies, Format: %d, Channels: %s.", freq, format, (chan==2?"Stereo":"Mono"));
if(ntimes != 1 ) {
LogMsg(WARN,"Audio was initialized %d times.", ntimes);
}
// Close only if open
if( ntimes ) {
Mix_CloseAudio();
}
return true;
}
SoundEffect::SoundEffect(const string& filename, Uint8 volume)
: sound(NULL), channel(-1)
{
if (++loadCount == 1) {
if (Mix_OpenAudio(audioRate, audioFormat, audioChannels, audioBuffers)) {
cerr << "Failed to open audio: " << Mix_GetError() << endl;
cerr << "(Disabling sound effects)" << endl;
SetEnabled(false);
return;
}
// Get the actual settings used
Mix_QuerySpec(&audioRate, &audioFormat, &audioChannels);
}
if (!enabled) return;
if (!(sound = Mix_LoadWAV(filename.c_str()))) {
ostringstream ss;
ss << "Error loading " << filename << ": ";
ss << Mix_GetError();
throw runtime_error(ss.str());
}
sound->volume = volume;
}
/*
* S_Init
*/
void S_Init(void) {
int freq, channels;
unsigned short format;
memset(&s_env, 0, sizeof(s_env));
if (Cvar_GetValue("s_disable")) {
Com_Warn("Sound disabled.\n");
return;
}
Com_Print("Sound initialization...\n");
s_rate = Cvar_Get("s_rate", "44100", CVAR_ARCHIVE | CVAR_S_DEVICE,
"Sound sampling rate in Hz.");
s_reverse = Cvar_Get("s_reverse", "0", CVAR_ARCHIVE,
"Reverse left and right channels.");
s_volume = Cvar_Get("s_volume", "1.0", CVAR_ARCHIVE,
"Global sound volume level.");
Cmd_AddCommand("s_restart", S_Restart_f, "Restart the sound subsystem");
Cmd_AddCommand("s_play", S_Play_f, NULL);
Cmd_AddCommand("s_stop", S_Stop_f, NULL);
Cmd_AddCommand("s_list", S_List_f, NULL);
if (SDL_WasInit(SDL_INIT_EVERYTHING) == 0) {
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
Com_Warn("S_Init: %s.\n", SDL_GetError());
return;
}
} else if (SDL_WasInit(SDL_INIT_AUDIO) == 0) {
if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
Com_Warn("S_Init: %s.\n", SDL_GetError());
return;
}
}
if (Mix_OpenAudio(s_rate->integer, MIX_DEFAULT_FORMAT, 2, 1024) == -1) {
Com_Warn("S_Init: %s\n", Mix_GetError());
return;
}
if (Mix_QuerySpec(&freq, &format, &channels) == 0) {
Com_Warn("S_Init: %s\n", Mix_GetError());
return;
}
if (Mix_AllocateChannels(MAX_CHANNELS) != MAX_CHANNELS) {
Com_Warn("S_Init: %s\n", Mix_GetError());
return;
}
Mix_ChannelFinished(S_FreeChannel);
Com_Print("Sound initialized %dKHz %d channels.\n", freq, channels);
s_env.initialized = true;
S_InitMusic();
}
bool AudioDevice::init(Log* _debugLog) {
debugLog = _debugLog;
if (debugLog != NULL) {
debugLog->printf("Initializing audio system with default settings\n");
}
int audioRate = MIX_DEFAULT_FREQUENCY;
uint16 audioFormat = MIX_DEFAULT_FORMAT;
int audioChannels = 2; // stereo
bool ret = Mix_OpenAudio(audioRate, audioFormat, audioChannels, 4096) >= 0;
if (debugLog != NULL) {
if (ret) {
debugLog->println("Audio initalization Ok");
} else {
debugLog->println("Audio initalization FAIL");
debugLog->printf("Couldn't open audio: %s\n", SDL_GetError());
}
}
if (ret) {
Mix_QuerySpec(&audioRate, &audioFormat, &audioChannels);
}
return ret;
}
void close_sound()
{
int numtimesopened, frequency, channels;
Uint16 format;
if (mix_ok) {
stop_bell();
stop_UI_sound();
stop_sound();
sound_cache.clear();
stop_music();
mix_ok = false;
numtimesopened = Mix_QuerySpec(&frequency, &format, &channels);
if(numtimesopened == 0) {
ERR_AUDIO << "Error closing audio device: " << Mix_GetError() << "\n";
}
while (numtimesopened) {
Mix_CloseAudio();
--numtimesopened;
}
}
if (SDL_WasInit(SDL_INIT_AUDIO) != 0) {
SDL_QuitSubSystem(SDL_INIT_AUDIO);
}
LOG_AUDIO << "Audio device released.\n";
}
static int SDLIsInitialized(void)
{
int freq, channels;
Uint16 format;
return Mix_QuerySpec(&freq, &format, &channels);
}
void CleanupT4KCommon(void)
{
int frequency, channels, n_timesopened;
Uint16 format;
// Close the audio mixer. We have to do this at least as many times
// as it was opened.
n_timesopened = Mix_QuerySpec(&frequency, &format, &channels);
while (n_timesopened)
{
Mix_CloseAudio();
n_timesopened--;
}
T4K_UnloadMenus();
// Unload SDL_Pango or SDL_ttf:
T4K_Cleanup_SDL_Text();
#ifdef HAVE_LIBSDL_NET
/* Quit networking if appropriate: */
SDLNet_Quit();
#endif
// Finally, quit SDL
SDL_Quit();
}
int snd_hz(void)
{
int freq = 0;
if (sound_on)
Mix_QuerySpec(&freq, NULL, NULL);
return freq;
}
void Snd_Init()
{
printf( "Initializing Sound\n" );
//return;
/* Initialize variables */
audio_rate = MIX_DEFAULT_FREQUENCY;
audio_format = MIX_DEFAULT_FORMAT;
audio_channels = 2;
/* Open Device */
if( Mix_OpenAudio( audio_rate, audio_format, audio_channels, 4096 ) < 0 )
{
printf( "ERROR: Couldn't open audio device\n" );
}
else
{
printf( "Trying to query audio device\n" );
Mix_QuerySpec( &audio_rate, &audio_format, &audio_channels );
printf( "Successfully opened audio device\n" );
printf("Opened audio at %d Hz %d bit %s\n", audio_rate, (audio_format&0xFF), (audio_channels > 1) ? "stereo" : "mono");
}
audioOpen = True;
soundcount = 0;
bPlaySounds = True;
nullsound.soundid = -1;
}
/**\brief Audio system initialization.
*/
bool Audio::Initialize( void ){
if ( this -> initstatus )
return false; // Already initialized
if(SDL_Init(SDL_INIT_AUDIO) < 0) {
LogMsg(CRITICAL,"SDL could not initialize audio: %s", SDL_GetError());
}
if(Mix_OpenAudio(this->audio_rate,
this->audio_format,
this->audio_channels,
this->audio_buffers)){
LogMsg(CRITICAL,"Audio initialization failed!: %s", Mix_GetError());
return false;
}
Mix_QuerySpec(&this->audio_rate, &this->audio_format, &this->audio_channels);
LogMsg(INFO,"SDL_mixer gave us rate %d, format %d, channels %d", this->audio_rate, this->audio_format, this->audio_channels);
#if defined(SDL_MIXER_MAJOR_VERSION) && (SDL_MIXER_MAJOR_VERSION>1) \
&& (SDL_MIXER_MINOR_VERSON>2) && (SDL_MIXER_PATCHLEVEL>=10)
// Load MOD and OGG libraries (If SDL_mixer version supports it)
const SDL_version *mix_version=Mix_Linked_Version();
if( (mix_version->major >= 1) && (mix_version->minor >= 2) && (mix_version->patch >= 10) ){
LogMsg(INFO,"This SDL_mixer version supports dynamic library loading.");
Mix_Init( MIX_INIT_MOD | MIX_INIT_OGG );
}
#endif // SDL_MIXER version requirements
// Allocate channels
Mix_AllocateChannels( this->max_chan);
assert( this->max_chan == static_cast<unsigned int>(this->GetTotalChannels()) );
return true;
}
SDLSoundChannel(const ByteArray &inBytes, const SoundTransform &inTransform)
{
Mix_QuerySpec(&mFrequency, &mFormat, &mChannels);
if (mFrequency!=44100)
ELOG("Warning - Frequency mismatch %d",mFrequency);
if (mFormat!=32784)
ELOG("Warning - Format mismatch %d",mFormat);
if (mChannels!=2)
ELOG("Warning - channe mismatch %d",mChannels);
mChunk = 0;
mDynamicBuffer = new short[BUF_SIZE * STEREO_SAMPLES];
memset(mDynamicBuffer,0,BUF_SIZE*sizeof(short));
mSound = 0;
mChannel = -1;
mDynamicChunk.allocated = 0;
mDynamicChunk.abuf = (Uint8 *)mDynamicBuffer;
mDynamicChunk.alen = BUF_SIZE * sizeof(short) * STEREO_SAMPLES; // bytes
mDynamicChunk.volume = MIX_MAX_VOLUME;
#ifndef WEBOS
mDynamicChunk.length_ticks = 0;
#endif
mDynamicFillPos = 0;
mDynamicStartPos = 0;
mDynamicDataDue = 0;
// Allocate myself a channel
for(int i=0;i<sMaxChannels;i++)
if (!sUsedChannel[i])
{
IncRef();
sDoneChannel[i] = false;
sUsedChannel[i] = true;
mChannel = i;
break;
}
if (mChannel>=0)
{
FillBuffer(inBytes);
// Just once ...
if (mDynamicFillPos<1024)
{
mDynamicDone = true;
mDynamicChunk.alen = mDynamicFillPos * sizeof(short) * STEREO_SAMPLES;
Mix_PlayChannel( mChannel , &mDynamicChunk, 0 );
}
else
{
mDynamicDone = false;
// TODO: Lock?
Mix_PlayChannel( mChannel , &mDynamicChunk, -1 );
mDynamicStartPos = sSoundPos;
}
Mix_Volume( mChannel, inTransform.volume*MIX_MAX_VOLUME );
}
}
int32_t MUSIC_StopSong(void)
{
#if defined FORK_EXEC_MIDI
if (external_midi)
{
if (external_midi_pid > 0)
{
int32_t ret;
struct timespec ts;
external_midi_restart = 0; // make SIGCHLD handler a no-op
ts.tv_sec = 0;
ts.tv_nsec = 5000000; // sleep 5ms at most
kill(external_midi_pid, SIGTERM);
nanosleep(&ts, NULL);
ret = waitpid(external_midi_pid, NULL, WNOHANG|WUNTRACED);
// printf("(%d)", ret);
if (ret != external_midi_pid)
{
if (ret==-1)
perror("waitpid");
else
{
// we tried to be nice, but no...
kill(external_midi_pid, SIGKILL);
initprintf("%s: wait for SIGTERM timed out.\n", __func__);
if (waitpid(external_midi_pid, NULL, WUNTRACED)==-1)
perror("waitpid (2)");
}
}
external_midi_pid = -1;
}
return(MUSIC_Ok);
}
#endif
//if (!fx_initialized)
if (!Mix_QuerySpec(NULL, NULL, NULL))
{
setErrorMessage("Need FX system initialized, too. Sorry.");
return(MUSIC_Error);
} // if
if ((Mix_PlayingMusic()) || (Mix_PausedMusic()))
Mix_HaltMusic();
if (music_musicchunk)
Mix_FreeMusic(music_musicchunk);
music_musicchunk = NULL;
return(MUSIC_Ok);
} // MUSIC_StopSong
int _main(int arvc , char * argv[]) {
SDL_Surface *screen;
SDL_Event event;
int done = 0;
/* We're going to be requesting certain things from our audio
device, so we set them up beforehand */
int audio_rate = 22050;
Uint16 audio_format = AUDIO_S16; /* 16-bit stereo */
int audio_channels = 2;
int audio_buffers = 4096;
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
/* This is where we open up our audio device. Mix_OpenAudio takes
as its parameters the audio format we'd /like/ to have. */
if(Mix_OpenAudio(audio_rate, audio_format, audio_channels, audio_buffers)) {
printf("Unable to open audio!\n");
exit(1);
}
/* If we actually care about what we got, we can ask here. In this
program we don't, but I'm showing the function call here anyway
in case we'd want to know later. */
Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
/* We're going to be using a window onscreen to register keypresses
in. We don't really care what it has in it, since we're not
doing graphics, so we'll just throw something up there. */
screen = SDL_SetVideoMode(320, 240, 0, 0);
while(!done)
{
while(SDL_PollEvent(&event))
{
switch(event.type)
{
case SDL_QUIT:
done = 1;
break;
case SDL_KEYDOWN:
case SDL_KEYUP:
handleKey(event.key);
break;
}
}
/* So we don't hog the CPU */
SDL_Delay(50);
}
/* This is the cleaning up part */
Mix_CloseAudio();
SDL_Quit();
return 0;
}
void SoundProcessor::printSoundInformation() const
{
#ifdef _FMOD_SOUND
FMOD_RESULT result;
int driver_num;
result = soundEngine->getNumDrivers(&driver_num);
ERRCHECK(result);
std::ostringstream os; os << "* Available sound drivers: ";
for(unsigned int i = driver_num; i--;)
{
char driver_name[256];
result = soundEngine->getDriverInfo(i, driver_name, 256, 0);
ERRCHECK(result);
os << driver_name << " ";
}
toInfoLog(os.str());
os.str("");
int current_driver;
result = soundEngine->getDriver(¤t_driver);
ERRCHECK(result);
os << "* Driver used: ";
if(current_driver == -1)
{
os << "Primary or main sound device as selected by the operating system settings";
if(driver_num == 1)
{
char driver_name[256];
result = soundEngine->getDriverInfo(current_driver, driver_name, 256, 0);
ERRCHECK(result);
os << "(probably '" << driver_name << "')";
}
}
else
{
char driver_name[256];
result = soundEngine->getDriverInfo(current_driver, driver_name, 256, 0);
ERRCHECK(result);
os << driver_name;
}
toInfoLog(os.str());
#elif _SDL_MIXER_SOUND
int audio_rate, audio_channels;
Uint16 audio_format;
int success = Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
if(!success) {
std::ostringstream os;
os << "ERROR (SoundProcessor::printSoundInformation()): " << Mix_GetError();
throw SDLException(os.str());
}
int bits = audio_format & 0xFF;
std::ostringstream os;
os << "* Opened audio at " << audio_rate << "Hz " << bits << "bit " << ((audio_channels>1)?"stereo":"mono");// << ", " << audio_buffers << " bytes audio buffer";
toInfoLog(os.str());
#endif
}
/*!
Returns the status of the audio device
\return True if audio has been opened, False otherwise
\author jfpatry
\date Created: 2000-09-02
\date Modified: 2000-09-02
*/
bool_t is_audio_open()
{
int tmp_freq;
Uint16 tmp_format;
int tmp_channels;
return (bool_t) Mix_QuerySpec( &tmp_freq, &tmp_format, &tmp_channels );
}
int32_t SDLDrv_PCM_Init(int32_t *mixrate, int32_t *numchannels, void * initdata)
{
int32_t err = 0;
int32_t chunksize;
uint16_t fmt;
UNREFERENCED_PARAMETER(numchannels);
UNREFERENCED_PARAMETER(initdata);
if (Initialised) {
SDLDrv_PCM_Shutdown();
}
chunksize = 512;
#ifdef __ANDROID__
chunksize = droidinfo.audio_buffer_size;
#endif
if (*mixrate >= 16000) chunksize *= 2;
if (*mixrate >= 32000) chunksize *= 2;
err = Mix_OpenAudio(*mixrate, AUDIO_S16SYS, *numchannels, chunksize);
if (err < 0) {
ErrorCode = SDLErr_OpenAudio;
return SDLErr_Error;
}
if (Mix_QuerySpec(mixrate, &fmt, numchannels))
{
if (fmt == AUDIO_U8 || fmt == AUDIO_S8)
{
ErrorCode = SDLErr_OpenAudio;
return SDLErr_Error;
}
}
//Mix_SetPostMix(fillData, NULL);
EffectFence = SDL_CreateMutex();
// channel 0 and 1 are actual sounds
// dummy channel 2 runs our fillData() callback as an effect
Mix_RegisterEffect(2, fillData, NULL, NULL);
DummyBuffer = (uint8_t *) calloc(1, chunksize);
DummyChunk = Mix_QuickLoad_RAW(DummyBuffer, chunksize);
Mix_PlayChannel(2, DummyChunk, -1);
Initialised = 1;
return SDLErr_Ok;
}
void initSound()
{
// Initialize SDL_Mixer
if(Mix_OpenAudio(audio_rate, audio_format, audio_channels, audio_buffers)) {
fprintf(stderr, "Failed to initialize SDL_Mixer: %s\n", Mix_GetError());
exit(1);
}
atexit(cleanupSound);
Mix_QuerySpec(&audio_rate, &audio_format, &audio_buffers);
}
void I_InitAudio(void)
{
sysaudio.obtained.freq = sysaudio.desired.freq =
SAMPLERATE;
sysaudio.obtained.format = sysaudio.desired.format =
AUDIO_S16SYS;
sysaudio.obtained.channels = sysaudio.desired.channels =
2;
sysaudio.obtained.samples = sysaudio.desired.samples =
SAMPLECOUNT;
sysaudio.obtained.size = sysaudio.desired.size =
(SAMPLECOUNT*sysaudio.obtained.channels*((sysaudio.obtained.format&0xff)>>3));
if (!sysaudio.enabled)
return;
#ifdef ENABLE_SDLMIXER
{
int freq, channels;
Uint16 format;
if (Mix_OpenAudio(sysaudio.desired.freq, sysaudio.desired.format,
sysaudio.desired.channels, sysaudio.desired.samples)<0) {
I_Error("Could not open audio: %s\n", SDL_GetError());
}
if (!Mix_QuerySpec(&freq, &format, &channels)) {
I_Error("Could not open audio: %s\n", SDL_GetError());
}
sysaudio.obtained.freq = freq;
sysaudio.obtained.channels = channels;
sysaudio.obtained.format = format;
sysaudio.obtained.size = (SAMPLECOUNT*channels*((format&0xff)>>3));
I_InitMusic();
I_InitSound();
Mix_SetPostMix(I_UpdateSound, NULL);
/* Mix_ReserveChannels(NUM_CHANNELS);*/
}
#else
sysaudio.desired.callback = I_UpdateAudio;
sysaudio.desired.userdata = NULL;
if (SDL_OpenAudio(&sysaudio.desired, &sysaudio.obtained)<0) {
I_Error("Could not open audio: %s\n", SDL_GetError());
}
I_InitMusic();
I_InitSound();
SDL_PauseAudio(0);
#endif
}
void AudioEngine::play_music(std::string file_location) {
if(currently_playing.compare(file_location) != 0) { //only change the song if it's not already playing!
//Initialise audio variables
int audio_rate; //output sampling rate (in Hz)
Uint16 audio_format; //output sample format.
int audio_channels; //the number of channels for the output.
int audio_buffers; //the chunk size of the output, larger is better for slower machines but means the sound will be delayed more.
int audio_volume; //the volume at which you wish to play the music
int looping; //wether the music should loop or not
// Initialize variables
audio_rate = MIX_DEFAULT_FREQUENCY; //22050
audio_format = AUDIO_S16; //Signed 16-bit samples, in little-endian byte order
audio_channels = 2; //1 = mono, 2 = stereo
audio_buffers = 4096; //good value for slower machines and doesn't have too much delay (shouldn't matter too much for music vs sound effects anyway
audio_volume = get_music_volume();
looping = -1; //loop through the music forever
//Initialise the audio API, returns -1 on errors so check it initialises correctly
if(Mix_OpenAudio(audio_rate, audio_format, audio_channels, audio_buffers) < 0) {
LOG(ERROR) << "Couldn't open audio: " << SDL_GetError(); //LOG why Audio couldn't be initialised
audio_open = false;
return;
}
//Query the auddio device for it's settings.
Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
// Set the music volume
set_music_volume(audio_volume);
const char* c_file_location = file_location.c_str(); //Convert the file_location to a c string for the SDL API
music = Mix_LoadMUS(c_file_location); //Load in the music
if (music == nullptr ) {
LOG(ERROR) << "Couldn't load " << c_file_location << ": " << SDL_GetError(); //print why music couldn't be loaded to the screen
Mix_CloseAudio(); //close down the audio system
audio_open = false;
return;
}
//while(!Mix_FadeOutMusic(1000) && Mix_PlayingMusic()) {
// wait for any fades to complete
// SDL_Delay(100);
//} //TODO: implement some sort of music (and screen!) fade
//Start playing the music.
if(Mix_FadeInMusic(music, looping, 2000) == -1) {
LOG(ERROR) << "Mix_FadeInMusic: " << Mix_GetError();
// well, there's no music, but most games don't break without music...
}
currently_playing = file_location;
}
return;
}
static void print_format()
{
int audio_channels;
int audio_rate;
Uint16 audio_format;
Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
printf("Opened audio at %d Hz %d bit %s\n", audio_rate,
(audio_format & 0xFF),
(audio_channels > 2) ? "surround" : (audio_channels > 1) ? "stereo" : "mono");
}