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-rw-r--r--drivers/alsa/audio_driver_alsa.cpp50
-rw-r--r--drivers/alsa/audio_driver_alsa.h1
-rw-r--r--drivers/pulseaudio/audio_driver_pulseaudio.cpp129
-rw-r--r--drivers/rtaudio/audio_driver_rtaudio.cpp100
4 files changed, 147 insertions, 133 deletions
diff --git a/drivers/alsa/audio_driver_alsa.cpp b/drivers/alsa/audio_driver_alsa.cpp
index 9895a10007..b026241579 100644
--- a/drivers/alsa/audio_driver_alsa.cpp
+++ b/drivers/alsa/audio_driver_alsa.cpp
@@ -45,7 +45,7 @@ Error AudioDriverALSA::init() {
samples_in = NULL;
samples_out = NULL;
- mix_rate = 44100;
+ mix_rate = GLOBAL_DEF("audio/mix_rate",44100);
output_format = OUTPUT_STEREO;
channels = 2;
@@ -70,67 +70,62 @@ Error AudioDriverALSA::init() {
ERR_FAIL_COND_V( status<0, ERR_CANT_OPEN );
snd_pcm_hw_params_alloca(&hwparams);
- status = snd_pcm_hw_params_any(pcm_handle, hwparams);
+ status = snd_pcm_hw_params_any(pcm_handle, hwparams);
CHECK_FAIL( status<0 );
status = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED);
-
CHECK_FAIL( status<0 );
//not interested in anything else
status = snd_pcm_hw_params_set_format(pcm_handle, hwparams, SND_PCM_FORMAT_S16_LE);
-
CHECK_FAIL( status<0 );
//todo: support 4 and 6
status = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, 2);
-
CHECK_FAIL( status<0 );
status = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &mix_rate, NULL);
-
-
CHECK_FAIL( status<0 );
int latency = GLOBAL_DEF("audio/output_latency",25);
buffer_size = nearest_power_of_2( latency * mix_rate / 1000 );
- status = snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &buffer_size, NULL);
-
+ // set buffer size from project settings
+ status = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size);
+ CHECK_FAIL( status<0 );
+ // make period size 1/8
+ period_size = buffer_size >> 3;
+ status = snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &period_size, NULL);
CHECK_FAIL( status<0 );
unsigned int periods=2;
status = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &periods, NULL);
-
CHECK_FAIL( status<0 );
status = snd_pcm_hw_params(pcm_handle,hwparams);
-
CHECK_FAIL( status<0 );
//snd_pcm_hw_params_free(&hwparams);
snd_pcm_sw_params_alloca(&swparams);
+
status = snd_pcm_sw_params_current(pcm_handle, swparams);
CHECK_FAIL( status<0 );
- status = snd_pcm_sw_params_set_avail_min(pcm_handle, swparams, buffer_size);
-
+ status = snd_pcm_sw_params_set_avail_min(pcm_handle, swparams, period_size);
CHECK_FAIL( status<0 );
status = snd_pcm_sw_params_set_start_threshold(pcm_handle, swparams, 1);
-
CHECK_FAIL( status<0 );
status = snd_pcm_sw_params(pcm_handle, swparams);
-
CHECK_FAIL( status<0 );
- samples_in = memnew_arr(int32_t, buffer_size*channels);
- samples_out = memnew_arr(int16_t, buffer_size*channels);
+ samples_in = memnew_arr(int32_t, period_size*channels);
+ samples_out = memnew_arr(int16_t, period_size*channels);
snd_pcm_nonblock(pcm_handle, 0);
@@ -144,36 +139,28 @@ void AudioDriverALSA::thread_func(void* p_udata) {
AudioDriverALSA* ad = (AudioDriverALSA*)p_udata;
-
while (!ad->exit_thread) {
-
-
if (!ad->active) {
-
- for (unsigned int i=0; i < ad->buffer_size*ad->channels; i++) {
-
+ for (unsigned int i=0; i < ad->period_size*ad->channels; i++) {
ad->samples_out[i] = 0;
};
} else {
-
ad->lock();
- ad->audio_server_process(ad->buffer_size, ad->samples_in);
+ ad->audio_server_process(ad->period_size, ad->samples_in);
ad->unlock();
- for(unsigned int i=0;i<ad->buffer_size*ad->channels;i++) {
-
+ for(unsigned int i=0;i<ad->period_size*ad->channels;i++) {
ad->samples_out[i]=ad->samples_in[i]>>16;
}
};
- int todo = ad->buffer_size; // * ad->channels * 2;
+ int todo = ad->period_size;
int total = 0;
while (todo) {
-
if (ad->exit_thread)
break;
uint8_t* src = (uint8_t*)ad->samples_out;
@@ -184,7 +171,8 @@ void AudioDriverALSA::thread_func(void* p_udata) {
break;
if ( wrote == -EAGAIN ) {
- usleep(1000); //can't write yet (though this is blocking..)
+ //can't write yet (though this is blocking..)
+ usleep(1000);
continue;
}
wrote = snd_pcm_recover(ad->pcm_handle, wrote, 0);
@@ -197,9 +185,9 @@ void AudioDriverALSA::thread_func(void* p_udata) {
}
continue;
};
+
total += wrote;
todo -= wrote;
-
};
};
diff --git a/drivers/alsa/audio_driver_alsa.h b/drivers/alsa/audio_driver_alsa.h
index 487f017584..df28294f56 100644
--- a/drivers/alsa/audio_driver_alsa.h
+++ b/drivers/alsa/audio_driver_alsa.h
@@ -51,6 +51,7 @@ class AudioDriverALSA : public AudioDriverSW {
OutputFormat output_format;
snd_pcm_uframes_t buffer_size;
+ snd_pcm_uframes_t period_size;
int channels;
bool active;
diff --git a/drivers/pulseaudio/audio_driver_pulseaudio.cpp b/drivers/pulseaudio/audio_driver_pulseaudio.cpp
index 521df2e521..3a1317cbf6 100644
--- a/drivers/pulseaudio/audio_driver_pulseaudio.cpp
+++ b/drivers/pulseaudio/audio_driver_pulseaudio.cpp
@@ -36,48 +36,56 @@
Error AudioDriverPulseAudio::init() {
- active = false;
- thread_exited = false;
- exit_thread = false;
+ active = false;
+ thread_exited = false;
+ exit_thread = false;
pcm_open = false;
samples_in = NULL;
samples_out = NULL;
- mix_rate = 44100;
+ mix_rate = GLOBAL_DEF("audio/mix_rate",44100);
output_format = OUTPUT_STEREO;
channels = 2;
- pa_sample_spec spec;
- spec.format = PA_SAMPLE_S16LE;
- spec.channels = channels;
- spec.rate = mix_rate;
-
- int error_code;
- pulse = pa_simple_new(NULL, // default server
- "Godot", // application name
- PA_STREAM_PLAYBACK,
- NULL, // default device
- "Sound", // stream description
- &spec,
- NULL, // use default channel map
- NULL, // use default buffering attributes
- &error_code
- );
-
- if (pulse == NULL) {
-
- fprintf(stderr, "PulseAudio ERR: %s\n", pa_strerror(error_code));\
- ERR_FAIL_COND_V(pulse == NULL, ERR_CANT_OPEN);
- }
+ pa_sample_spec spec;
+ spec.format = PA_SAMPLE_S16LE;
+ spec.channels = channels;
+ spec.rate = mix_rate;
+
+ int latency = GLOBAL_DEF("audio/output_latency", 25);
+ buffer_size = nearest_power_of_2(latency * mix_rate / 1000);
+
+ pa_buffer_attr attr;
+ // set to appropriate buffer size from global settings
+ attr.tlength = buffer_size;
+ // set them to be automatically chosen
+ attr.prebuf = (uint32_t)-1;
+ attr.maxlength = (uint32_t)-1;
+ attr.minreq = (uint32_t)-1;
+
+ int error_code;
+ pulse = pa_simple_new( NULL, // default server
+ "Godot", // application name
+ PA_STREAM_PLAYBACK,
+ NULL, // default device
+ "Sound", // stream description
+ &spec,
+ NULL, // use default channel map
+ &attr, // use buffering attributes from above
+ &error_code
+ );
+
+ if (pulse == NULL) {
+ fprintf(stderr, "PulseAudio ERR: %s\n", pa_strerror(error_code));\
+ ERR_FAIL_COND_V(pulse == NULL, ERR_CANT_OPEN);
+ }
- int latency = GLOBAL_DEF("audio/output_latency", 25);
- buffer_size = nearest_power_of_2(latency * mix_rate / 1000);
- samples_in = memnew_arr(int32_t, buffer_size * channels);
- samples_out = memnew_arr(int16_t, buffer_size * channels);
+ samples_in = memnew_arr(int32_t, buffer_size * channels);
+ samples_out = memnew_arr(int16_t, buffer_size * channels);
- mutex = Mutex::create();
- thread = Thread::create(AudioDriverPulseAudio::thread_func, this);
+ mutex = Mutex::create();
+ thread = Thread::create(AudioDriverPulseAudio::thread_func, this);
return OK;
}
@@ -95,47 +103,40 @@ float AudioDriverPulseAudio::get_latency() {
void AudioDriverPulseAudio::thread_func(void* p_udata) {
- AudioDriverPulseAudio* ad = (AudioDriverPulseAudio*)p_udata;
+ AudioDriverPulseAudio* ad = (AudioDriverPulseAudio*)p_udata;
while (!ad->exit_thread) {
-
if (!ad->active) {
-
- for (unsigned int i=0; i < ad->buffer_size * ad->channels; i++) {
-
+ for (unsigned int i=0; i < ad->buffer_size * ad->channels; i++) {
ad->samples_out[i] = 0;
- }
+ }
} else {
-
ad->lock();
ad->audio_server_process(ad->buffer_size, ad->samples_in);
ad->unlock();
- for (unsigned int i=0; i < ad->buffer_size * ad->channels;i ++) {
-
- ad->samples_out[i] = ad->samples_in[i] >> 16;
+ for (unsigned int i=0; i < ad->buffer_size * ad->channels;i ++) {
+ ad->samples_out[i] = ad->samples_in[i] >> 16;
}
- }
-
- // pa_simple_write always consumes the entire buffer
-
- int error_code;
- int byte_size = ad->buffer_size * sizeof(int16_t) * ad->channels;
- if (pa_simple_write(ad->pulse, ad->samples_out, byte_size, &error_code) < 0) {
+ }
- // can't recover here
- fprintf(stderr, "PulseAudio failed and can't recover: %s\n", pa_strerror(error_code));
- ad->active = false;
- ad->exit_thread = true;
- break;
- }
+ // pa_simple_write always consumes the entire buffer
- }
-
- ad->thread_exited = true;
+ int error_code;
+ int byte_size = ad->buffer_size * sizeof(int16_t) * ad->channels;
+ if (pa_simple_write(ad->pulse, ad->samples_out, byte_size, &error_code) < 0) {
+ // can't recover here
+ fprintf(stderr, "PulseAudio failed and can't recover: %s\n", pa_strerror(error_code));
+ ad->active = false;
+ ad->exit_thread = true;
+ break;
+ }
+ }
+
+ ad->thread_exited = true;
}
void AudioDriverPulseAudio::start() {
@@ -184,10 +185,10 @@ void AudioDriverPulseAudio::finish() {
};
memdelete(thread);
- if (mutex) {
+ if (mutex) {
memdelete(mutex);
- mutex = NULL;
- }
+ mutex = NULL;
+ }
thread = NULL;
}
@@ -195,9 +196,9 @@ void AudioDriverPulseAudio::finish() {
AudioDriverPulseAudio::AudioDriverPulseAudio() {
mutex = NULL;
- thread = NULL;
- pulse = NULL;
- latency=0;
+ thread = NULL;
+ pulse = NULL;
+ latency=0;
}
AudioDriverPulseAudio::~AudioDriverPulseAudio() {
diff --git a/drivers/rtaudio/audio_driver_rtaudio.cpp b/drivers/rtaudio/audio_driver_rtaudio.cpp
index 4b145c09fb..a798990449 100644
--- a/drivers/rtaudio/audio_driver_rtaudio.cpp
+++ b/drivers/rtaudio/audio_driver_rtaudio.cpp
@@ -47,9 +47,7 @@ const char* AudioDriverRtAudio::get_name() const {
}
-// Two-channel sawtooth wave generator.
-int AudioDriverRtAudio::callback( void *outputBuffer, void *inputBuffer, unsigned int nBufferFrames,
- double streamTime, RtAudioStreamStatus status, void *userData ) {
+int AudioDriverRtAudio::callback( void *outputBuffer, void *inputBuffer, unsigned int nBufferFrames, double streamTime, RtAudioStreamStatus status, void *userData ) {
if (status) {
if (status & RTAUDIO_INPUT_OVERFLOW) {
@@ -64,8 +62,6 @@ int AudioDriverRtAudio::callback( void *outputBuffer, void *inputBuffer, unsigne
AudioDriverRtAudio *self = (AudioDriverRtAudio*)userData;
if (self->mutex->try_lock()!=OK) {
-
-
// what should i do..
for(unsigned int i=0;i<nBufferFrames;i++)
buffer[i]=0;
@@ -100,61 +96,89 @@ Error AudioDriverRtAudio::init() {
else
output_format=OUTPUT_STEREO;
-
RtAudio::StreamParameters parameters;
parameters.deviceId = dac->getDefaultOutputDevice();
RtAudio::StreamOptions options;
+
+ // set the desired numberOfBuffers
+ unsigned int target_number_of_buffers = 4;
+ options.numberOfBuffers = target_number_of_buffers;
+
// options.
// RtAudioStreamFlags flags; /*!< A bit-mask of stream flags (RTAUDIO_NONINTERLEAVED, RTAUDIO_MINIMIZE_LATENCY, RTAUDIO_HOG_DEVICE). *///
// unsigned int numberOfBuffers; /*!< Number of stream buffers. */
// std::string streamName; /*!< A stream name (currently used only in Jack). */
// int priority; /*!< Scheduling priority of callback thread (only used with flag RTAUDIO_SCHEDULE_REALTIME). */
-
parameters.firstChannel = 0;
mix_rate = GLOBAL_DEF("audio/mix_rate",44100);
int latency = GLOBAL_DEF("audio/output_latency",25);
- unsigned int buffer_size = nearest_power_of_2( latency * mix_rate / 1000 );
+ // calculate desired buffer_size, taking the desired numberOfBuffers into account (latency depends on numberOfBuffers*buffer_size)
+ unsigned int buffer_size = nearest_power_of_2( latency * mix_rate / 1000 / target_number_of_buffers);
+
if (OS::get_singleton()->is_stdout_verbose()) {
print_line("audio buffer size: "+itos(buffer_size));
}
-// bool success=false;
-
- while( true) {
-
- switch(output_format) {
-
- case OUTPUT_MONO: parameters.nChannels = 1; break;
- case OUTPUT_STEREO: parameters.nChannels = 2; break;
- case OUTPUT_QUAD: parameters.nChannels = 4; break;
- case OUTPUT_5_1: parameters.nChannels = 6; break;
- };
+ short int tries = 2;
+ while(true) {
+ while( true) {
+ switch(output_format) {
+ case OUTPUT_MONO: parameters.nChannels = 1; break;
+ case OUTPUT_STEREO: parameters.nChannels = 2; break;
+ case OUTPUT_QUAD: parameters.nChannels = 4; break;
+ case OUTPUT_5_1: parameters.nChannels = 6; break;
+ };
- try {
- dac->openStream( &parameters, NULL, RTAUDIO_SINT32,
- mix_rate, &buffer_size, &callback, this,&options );
- mutex = Mutex::create(true);
- active=true;
+ try {
+ dac->openStream( &parameters, NULL, RTAUDIO_SINT32, mix_rate, &buffer_size, &callback, this,&options );
+ mutex = Mutex::create(true);
+ active=true;
+
+ break;
+ } catch ( RtAudioError& e ) {
+ // try with less channels
+ ERR_PRINT("Unable to open audio, retrying with fewer channels..");
+
+ switch(output_format) {
+ case OUTPUT_MONO: ERR_EXPLAIN("Unable to open audio."); ERR_FAIL_V( ERR_UNAVAILABLE ); break;
+ case OUTPUT_STEREO: output_format=OUTPUT_MONO; break;
+ case OUTPUT_QUAD: output_format=OUTPUT_STEREO; break;
+ case OUTPUT_5_1: output_format=OUTPUT_QUAD; break;
+ };
+ }
+ }
+ // compare actual numberOfBuffers with the desired one. If not equal, close and reopen the stream with adjusted buffer size, so the desired output_latency is still correct
+ if(target_number_of_buffers != options.numberOfBuffers) {
+ if(tries <= 0) {
+ ERR_EXPLAIN("RtAudio: Unable to set correct number of buffers.");
+ ERR_FAIL_V( ERR_UNAVAILABLE );
+ break;
+ }
+
+ try {
+ dac->closeStream();
+ } catch ( RtAudioError& e ) {
+ ERR_PRINT(e.what());
+ ERR_FAIL_V( ERR_UNAVAILABLE );
+ break;
+ }
+ if (OS::get_singleton()->is_stdout_verbose())
+ print_line("RtAudio: Desired number of buffers (" + itos(target_number_of_buffers) + ") not available. Using " + itos(options.numberOfBuffers) + " instead. Reopening stream with adjusted buffer_size.");
+
+ // new buffer size dependent on the ratio between set and actual numberOfBuffers
+ buffer_size = buffer_size / (options.numberOfBuffers / target_number_of_buffers);
+ target_number_of_buffers = options.numberOfBuffers;
+ tries--;
+ } else {
break;
- } catch ( RtAudioError& e ) {
- // try with less channels
-
- ERR_PRINT("Unable to open audio, retrying with fewer channels..");
-
- switch(output_format) {
-
- case OUTPUT_MONO: ERR_EXPLAIN("Unable to open audio."); ERR_FAIL_V( ERR_UNAVAILABLE ); break;
- case OUTPUT_STEREO: output_format=OUTPUT_MONO; break;
- case OUTPUT_QUAD: output_format=OUTPUT_STEREO; break;
- case OUTPUT_5_1: output_format=OUTPUT_QUAD; break;
- };
}
- }
+
+ }
return OK;
}
@@ -190,7 +214,6 @@ void AudioDriverRtAudio::unlock() {
void AudioDriverRtAudio::finish() {
-
if ( active && dac->isStreamOpen() )
dac->closeStream();
if (mutex)
@@ -203,6 +226,7 @@ void AudioDriverRtAudio::finish() {
AudioDriverRtAudio::AudioDriverRtAudio()
{
+
mutex=NULL;
mix_rate=44100;
output_format=OUTPUT_STEREO;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 04:03:20 +0000