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Exposes capture methods to AudioServer, variable renames for consistency,

Browse source 
added documentation.
This commit is contained in:
Saracen 2019-07-09 18:11:11 +01:00
parent e6230a36f8
commit c81ec6f26d
9 changed files with 146 additions and 72 deletions
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43
doc/classes/AudioServer.xml
View file

@ -42,6 +42,7 @@
<return type="Array">
</return>
<description>
Returns the names of all audio input devices detected on the system.
</description>
</method>
<method name="capture_set_device">
@ -52,6 +53,20 @@
<description>
</description>
</method>
<method name="capture_start">
<return type="int" enum="Error">
</return>
<description>
Attempts to start recording from the audio driver's capture device. On success, the return value is [constant OK].
</description>
</method>
<method name="capture_stop">
<return type="int" enum="Error">
</return>
<description>
Attempts to stop recording from the audio driver's capture device. On success, the return value is [constant OK].
</description>
</method>
<method name="generate_bus_layout" qualifiers="const">
<return type="AudioBusLayout">
</return>
@ -158,11 +173,32 @@
Returns the volume of the bus at index [code]bus_idx[/code] in dB.
</description>
</method>
<method name="get_capture_buffer">
<return type="PoolIntArray">
</return>
<description>
Returns an [PoolIntArray] containing audio frames from the capture device.
</description>
</method>
<method name="get_capture_position">
<return type="int">
</return>
<description>
Returns the write position of the capture device buffer.
</description>
</method>
<method name="get_capture_size">
<return type="int">
</return>
<description>
Returns the size of the capture device buffer.
</description>
</method>
<method name="get_device_list">
<return type="Array">
</return>
<description>
Returns the names of all audio devices detected on the system.
Returns the names of all audio output devices detected on the system.
</description>
</method>
<method name="get_mix_rate" qualifiers="const">
@ -388,7 +424,10 @@
Number of available audio buses.
</member>
<member name="device" type="String" setter="set_device" getter="get_device" default="&quot;Default&quot;">
Name of the current device (see [method get_device_list]).
Name of the current device for audio output (see [method get_device_list]).
</member>
<member name="capture_device" type="String" setter="capture_set_device" getter="capture_get_device" default="&quot;Default&quot;">
Name of the current device for audio input (see [method capture_get_device_list]).
</member>
<member name="global_rate_scale" type="float" setter="set_global_rate_scale" getter="get_global_rate_scale" default="1.0">
Scales the rate at which audio is played (i.e. setting it to [code]0.5[/code] will make the audio be played twice as fast).

14
drivers/coreaudio/audio_driver_coreaudio.cpp
View file

@ -233,11 +233,11 @@ OSStatus AudioDriverCoreAudio::input_callback(void *inRefCon,
if (result == noErr) {
for (int i = 0; i < inNumberFrames * ad->capture_channels; i++) {
int32_t sample = ad->input_buf[i] << 16;
ad->input_buffer_write(sample);
ad->capture_buffer_write(sample);
if (ad->capture_channels == 1) {
// In case input device is single channel convert it to Stereo
ad->input_buffer_write(sample);
// In case capture device is single channel convert it to Stereo
ad->capture_buffer_write(sample);
}
}
} else {
@ -487,7 +487,7 @@ void AudioDriverCoreAudio::capture_finish() {
Error AudioDriverCoreAudio::capture_start() {
input_buffer_init(buffer_frames);
capture_buffer_init(buffer_frames);
OSStatus result = AudioOutputUnitStart(input_unit);
if (result != noErr) {
@ -642,9 +642,9 @@ void AudioDriverCoreAudio::_set_device(const String &device, bool capture) {
ERR_FAIL_COND(result != noErr);
if (capture) {
// Reset audio input to keep synchronisation.
input_position = 0;
input_size = 0;
// Reset audio capture to keep synchronisation.
capture_position = 0;
capture_size = 0;
}
}
}

20
drivers/pulseaudio/audio_driver_pulseaudio.cpp
View file

@ -227,8 +227,8 @@ Error AudioDriverPulseAudio::init_device() {
samples_out.resize(pa_buffer_size);
// Reset audio input to keep synchronisation.
input_position = 0;
input_size = 0;
capture_position = 0;
capture_size = 0;
return OK;
}
@ -460,7 +460,7 @@ void AudioDriverPulseAudio::thread_func(void *p_udata) {
size_t bytes = pa_stream_readable_size(ad->pa_rec_str);
if (bytes > 0) {
const void *ptr = NULL;
size_t maxbytes = ad->input_buffer.size() * sizeof(int16_t);
size_t maxbytes = ad->capture_buffer.size() * sizeof(int16_t);
bytes = MIN(bytes, maxbytes);
ret = pa_stream_peek(ad->pa_rec_str, &ptr, &bytes);
@ -470,11 +470,11 @@ void AudioDriverPulseAudio::thread_func(void *p_udata) {
int16_t *srcptr = (int16_t *)ptr;
for (size_t i = bytes >> 1; i > 0; i--) {
int32_t sample = int32_t(*srcptr++) << 16;
ad->input_buffer_write(sample);
ad->capture_buffer_write(sample);
if (ad->pa_rec_map.channels == 1) {
// In case input device is single channel convert it to Stereo
ad->input_buffer_write(sample);
// In case capture device is single channel convert it to Stereo
ad->capture_buffer_write(sample);
}
}
@ -661,7 +661,7 @@ Error AudioDriverPulseAudio::capture_init_device() {
break;
default:
WARN_PRINTS("PulseAudio: Unsupported number of input channels: " + itos(pa_rec_map.channels));
WARN_PRINTS("PulseAudio: Unsupported number of capture channels: " + itos(pa_rec_map.channels));
pa_channel_map_init_stereo(&pa_rec_map);
break;
}
@ -693,10 +693,10 @@ Error AudioDriverPulseAudio::capture_init_device() {
ERR_FAIL_V(ERR_CANT_OPEN);
}
input_buffer_init(input_buffer_frames);
capture_buffer_init(input_buffer_frames);
print_verbose("PulseAudio: detected " + itos(pa_rec_map.channels) + " input channels");
print_verbose("PulseAudio: input buffer frames: " + itos(input_buffer_frames) + " calculated latency: " + itos(input_buffer_frames * 1000 / mix_rate) + "ms");
print_verbose("PulseAudio: detected " + itos(pa_rec_map.channels) + " capture channels");
print_verbose("PulseAudio: capture buffer frames: " + itos(input_buffer_frames) + " calculated latency: " + itos(input_buffer_frames * 1000 / mix_rate) + "ms");
return OK;
}

10
drivers/wasapi/audio_driver_wasapi.cpp
View file

@ -343,8 +343,8 @@ Error AudioDriverWASAPI::init_render_device(bool reinit) {
// Sample rate is independent of channels (ref: https://stackoverflow.com/questions/11048825/audio-sample-frequency-rely-on-channels)
samples_in.resize(buffer_frames * channels);
input_position = 0;
input_size = 0;
capture_position = 0;
capture_size = 0;
print_verbose("WASAPI: detected " + itos(channels) + " channels");
print_verbose("WASAPI: audio buffer frames: " + itos(buffer_frames) + " calculated latency: " + itos(buffer_frames * 1000 / mix_rate) + "ms");
@ -363,7 +363,7 @@ Error AudioDriverWASAPI::init_capture_device(bool reinit) {
HRESULT hr = audio_input.audio_client->GetBufferSize(&max_frames);
ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
input_buffer_init(max_frames);
capture_buffer_init(max_frames);
return OK;
}
@ -716,8 +716,8 @@ void AudioDriverWASAPI::thread_func(void *p_udata) {
}
}
ad->input_buffer_write(l);
ad->input_buffer_write(r);
ad->capture_buffer_write(l);
ad->capture_buffer_write(r);
}
read_frames += num_frames_available;

6
platform/android/audio_driver_opensl.cpp
View file

@ -215,8 +215,8 @@ void AudioDriverOpenSL::_record_buffer_callback(SLAndroidSimpleBufferQueueItf qu
for (int i = 0; i < rec_buffer.size(); i++) {
int32_t sample = rec_buffer[i] << 16;
input_buffer_write(sample);
input_buffer_write(sample); // call twice to convert to Stereo
capture_buffer_write(sample);
capture_buffer_write(sample); // call twice to convert to Stereo
}
SLresult res = (*recordBufferQueueItf)->Enqueue(recordBufferQueueItf, rec_buffer.ptrw(), rec_buffer.size() * sizeof(int16_t));
@ -287,7 +287,7 @@ Error AudioDriverOpenSL::capture_init_device() {
const int rec_buffer_frames = 2048;
rec_buffer.resize(rec_buffer_frames);
input_buffer_init(rec_buffer_frames);
capture_buffer_init(rec_buffer_frames);
res = (*recordBufferQueueItf)->Enqueue(recordBufferQueueItf, rec_buffer.ptrw(), rec_buffer.size() * sizeof(int16_t));
ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN);

42
servers/audio/audio_stream.cpp
View file

@ -134,31 +134,31 @@ AudioStreamMicrophone::AudioStreamMicrophone() {
void AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_frames) {
AudioDriver::get_singleton()->lock();
AudioServer::get_singleton()->lock();
Vector<int32_t> buf = AudioDriver::get_singleton()->get_input_buffer();
unsigned int input_size = AudioDriver::get_singleton()->get_input_size();
int mix_rate = AudioDriver::get_singleton()->get_mix_rate();
unsigned int playback_delay = MIN(((50 * mix_rate) / 1000) * 2, buf.size() >> 1);
PoolVector<int32_t> capture_buffer = AudioServer::get_singleton()->get_capture_buffer();
unsigned int capture_size = AudioServer::get_singleton()->get_capture_size();
int mix_rate = AudioServer::get_singleton()->get_mix_rate();
unsigned int playback_delay = MIN(((50 * mix_rate) / 1000) * 2, capture_buffer.size() >> 1);
#ifdef DEBUG_ENABLED
unsigned int input_position = AudioDriver::get_singleton()->get_input_position();
unsigned int capture_position = AudioServer::get_singleton()->get_capture_position();
#endif
if (playback_delay > input_size) {
if (playback_delay > capture_size) {
for (int i = 0; i < p_frames; i++) {
p_buffer[i] = AudioFrame(0.0f, 0.0f);
}
input_ofs = 0;
capture_ofs = 0;
} else {
for (int i = 0; i < p_frames; i++) {
if (input_size > input_ofs && (int)input_ofs < buf.size()) {
float l = (buf[input_ofs++] >> 16) / 32768.f;
if ((int)input_ofs >= buf.size()) {
input_ofs = 0;
if (capture_size > capture_ofs && (int)capture_ofs < capture_buffer.size()) {
float l = (capture_buffer[capture_ofs++] >> 16) / 32768.f;
if ((int)capture_ofs >= capture_buffer.size()) {
capture_ofs = 0;
}
float r = (buf[input_ofs++] >> 16) / 32768.f;
if ((int)input_ofs >= buf.size()) {
input_ofs = 0;
float r = (capture_buffer[capture_ofs++] >> 16) / 32768.f;
if ((int)capture_ofs >= capture_buffer.size()) {
capture_ofs = 0;
}
p_buffer[i] = AudioFrame(l, r);
@ -169,12 +169,12 @@ void AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_fr
}
#ifdef DEBUG_ENABLED
if (input_ofs > input_position && (int)(input_ofs - input_position) < (p_frames * 2)) {
print_verbose(String(get_class_name()) + " buffer underrun: input_position=" + itos(input_position) + " input_ofs=" + itos(input_ofs) + " input_size=" + itos(input_size));
if (capture_ofs > capture_position && (int)(capture_ofs - capture_position) < (p_frames * 2)) {
print_verbose(String(get_class_name()) + " buffer underrun: capture_position=" + itos(capture_position) + " capture_ofs=" + itos(capture_ofs) + " capture_size=" + itos(capture_size));
}
#endif
AudioDriver::get_singleton()->unlock();
AudioServer::get_singleton()->unlock();
}
void AudioStreamPlaybackMicrophone::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
@ -196,9 +196,9 @@ void AudioStreamPlaybackMicrophone::start(float p_from_pos) {
return;
}
input_ofs = 0;
capture_ofs = 0;
if (AudioDriver::get_singleton()->capture_start() == OK) {
if (AudioServer::get_singleton()->capture_start() == OK) {
active = true;
_begin_resample();
}
@ -206,7 +206,7 @@ void AudioStreamPlaybackMicrophone::start(float p_from_pos) {
void AudioStreamPlaybackMicrophone::stop() {
if (active) {
AudioDriver::get_singleton()->capture_stop();
AudioServer::get_singleton()->capture_stop();
active = false;
}
}

2
servers/audio/audio_stream.h
View file

@ -123,7 +123,7 @@ class AudioStreamPlaybackMicrophone : public AudioStreamPlaybackResampled {
friend class AudioStreamMicrophone;
bool active;
unsigned int input_ofs;
unsigned int capture_ofs;
Ref<AudioStreamMicrophone> microphone;

58
servers/audio_server.cpp
View file

@ -85,26 +85,26 @@ double AudioDriver::get_time_to_next_mix() const {
return mix_buffer - total;
}
void AudioDriver::input_buffer_init(int driver_buffer_frames) {
void AudioDriver::capture_buffer_init(int driver_buffer_frames) {
const int input_buffer_channels = 2;
input_buffer.resize(driver_buffer_frames * input_buffer_channels * 4);
input_position = 0;
input_size = 0;
const int capture_buffer_channels = 2;
capture_buffer.resize(driver_buffer_frames * capture_buffer_channels * 4);
capture_position = 0;
capture_size = 0;
}
void AudioDriver::input_buffer_write(int32_t sample) {
void AudioDriver::capture_buffer_write(int32_t sample) {
if ((int)input_position < input_buffer.size()) {
input_buffer.write[input_position++] = sample;
if ((int)input_position >= input_buffer.size()) {
input_position = 0;
if ((int)capture_position < capture_buffer.size()) {
capture_buffer.write()[capture_position++] = sample;
if ((int)capture_position >= capture_buffer.size()) {
capture_position = 0;
}
if ((int)input_size < input_buffer.size()) {
input_size++;
if ((int)capture_size < capture_buffer.size()) {
capture_size++;
}
} else {
WARN_PRINTS("input_buffer_write: Invalid input_position=" + itos(input_position) + " input_buffer.size()=" + itos(input_buffer.size()));
WARN_PRINTS("capture_buffer_write: Invalid capture_position=" + itos(capture_position) + " capture_buffer.size()=" + itos(capture_buffer.size()));
}
}
@ -154,8 +154,8 @@ AudioDriver::AudioDriver() {
_last_mix_time = 0;
_last_mix_frames = 0;
input_position = 0;
input_size = 0;
capture_position = 0;
capture_size = 0;
#ifdef DEBUG_ENABLED
prof_time = 0;
@ -1302,6 +1302,14 @@ void AudioServer::set_device(String device) {
AudioDriver::get_singleton()->set_device(device);
}
Error AudioServer::capture_start() {
return AudioDriver::get_singleton()->capture_start();
}
Error AudioServer::capture_stop() {
return AudioDriver::get_singleton()->capture_stop();
}
Array AudioServer::capture_get_device_list() {
return AudioDriver::get_singleton()->capture_get_device_list();
@ -1317,6 +1325,18 @@ void AudioServer::capture_set_device(const String &p_name) {
AudioDriver::get_singleton()->capture_set_device(p_name);
}
PoolVector<int32_t> AudioServer::get_capture_buffer() {
return AudioDriver::get_singleton()->get_capture_buffer();
}
unsigned int AudioServer::get_capture_position() {
return AudioDriver::get_singleton()->get_capture_position();
}
unsigned int AudioServer::get_capture_size() {
return AudioDriver::get_singleton()->get_capture_size();
}
void AudioServer::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_bus_count", "amount"), &AudioServer::set_bus_count);
@ -1377,15 +1397,23 @@ void AudioServer::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_time_since_last_mix"), &AudioServer::get_time_since_last_mix);
ClassDB::bind_method(D_METHOD("get_output_latency"), &AudioServer::get_output_latency);
ClassDB::bind_method(D_METHOD("capture_start"), &AudioServer::capture_start);
ClassDB::bind_method(D_METHOD("capture_stop"), &AudioServer::capture_stop);
ClassDB::bind_method(D_METHOD("capture_get_device_list"), &AudioServer::capture_get_device_list);
ClassDB::bind_method(D_METHOD("capture_get_device"), &AudioServer::capture_get_device);
ClassDB::bind_method(D_METHOD("capture_set_device", "name"), &AudioServer::capture_set_device);
ClassDB::bind_method(D_METHOD("get_capture_buffer"), &AudioServer::get_capture_buffer);
ClassDB::bind_method(D_METHOD("get_capture_position"), &AudioServer::get_capture_position);
ClassDB::bind_method(D_METHOD("get_capture_size"), &AudioServer::get_capture_size);
ClassDB::bind_method(D_METHOD("set_bus_layout", "bus_layout"), &AudioServer::set_bus_layout);
ClassDB::bind_method(D_METHOD("generate_bus_layout"), &AudioServer::generate_bus_layout);
ADD_PROPERTY(PropertyInfo(Variant::INT, "bus_count"), "set_bus_count", "get_bus_count");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "device"), "set_device", "get_device");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "capture_device"), "capture_set_device", "capture_get_device");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "global_rate_scale"), "set_global_rate_scale", "get_global_rate_scale");
ADD_SIGNAL(MethodInfo("bus_layout_changed"));

23
servers/audio_server.h
View file

@ -53,14 +53,14 @@ class AudioDriver {
#endif
protected:
Vector<int32_t> input_buffer;
unsigned int input_position;
unsigned int input_size;
PoolVector<int32_t> capture_buffer;
unsigned int capture_position;
unsigned int capture_size;
void audio_server_process(int p_frames, int32_t *p_buffer, bool p_update_mix_time = true);
void update_mix_time(int p_frames);
void input_buffer_init(int driver_buffer_frames);
void input_buffer_write(int32_t sample);
void capture_buffer_init(int driver_buffer_frames);
void capture_buffer_write(int32_t sample);
#ifdef DEBUG_ENABLED
_FORCE_INLINE_ void start_counting_ticks() { prof_ticks = OS::get_singleton()->get_ticks_usec(); }
@ -111,9 +111,9 @@ public:
SpeakerMode get_speaker_mode_by_total_channels(int p_channels) const;
int get_total_channels_by_speaker_mode(SpeakerMode) const;
Vector<int32_t> get_input_buffer() { return input_buffer; }
unsigned int get_input_position() { return input_position; }
unsigned int get_input_size() { return input_size; }
PoolVector<int32_t> get_capture_buffer() { return capture_buffer; }
unsigned int get_capture_position() { return capture_position; }
unsigned int get_capture_size() { return capture_size; }
#ifdef DEBUG_ENABLED
uint64_t get_profiling_time() const { return prof_time; }
@ -384,10 +384,17 @@ public:
String get_device();
void set_device(String device);
Error capture_start();
Error capture_stop();
Array capture_get_device_list();
String capture_get_device();
void capture_set_device(const String &p_name);
PoolVector<int32_t> get_capture_buffer();
unsigned int get_capture_position();
unsigned int get_capture_size();
AudioServer();
virtual ~AudioServer();
};