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Add AudioWidget

tags/v0.6.0
Andrew Belt 6 years ago
parent
3e5890b79d
commit
f129f026f6
14 changed files with 1605 additions and 450 deletions
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  1. +15
    -0
      include/app.hpp
  2. +42
    -0
      include/audio.hpp
  3. +16
    -0
      include/componentlibrary.hpp
  4. +1
    -1
      include/rack.hpp
  5. +3
    -0
      include/widgets.hpp
  6. +366
    -0
      res/ComponentLibrary/ADAT.svg
  7. +397
    -0
      res/ComponentLibrary/MIDI_DIN.svg
  8. +376
    -0
      res/ComponentLibrary/USB-B.svg
  9. +115
    -0
      src/app/AudioWidget.cpp
  10. +1
    -1
      src/app/Port.cpp
  11. +10
    -11
      src/app/Toolbar.cpp
  12. +1
    -1
      src/app/WireWidget.cpp
  13. +212
    -0
      src/audio.cpp
  14. +50
    -436
      src/core/AudioInterface.cpp

+ 15
- 0
include/app.hpp View File

@@ -278,6 +278,21 @@ struct MomentarySwitch : virtual Switch {
}
};

////////////////////
// IO widgets
////////////////////

struct AudioIO;

struct AudioWidget : OpaqueWidget {
/** Not owned */
AudioIO *audioIO = NULL;
void onMouseDown(EventMouseDown &e) override;
};

struct MIDIWidget : OpaqueWidget {
};

////////////////////
// lights
////////////////////


+ 42
- 0
include/audio.hpp View File

@@ -0,0 +1,42 @@
#pragma once

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wsuggest-override"
#include <RtAudio.h>
#pragma GCC diagnostic pop


namespace rack {


struct AudioIO {
int maxOutputs = 8;
int maxInputs = 8;

RtAudio *stream = NULL;
// Stream properties
int device = -1;
int sampleRate = 44100;
int blockSize = 256;
int numOutputs = 0;
int numInputs = 0;

AudioIO();
~AudioIO();

std::vector<int> listDrivers();
std::string getDriverName(int driver);
int getDriver();
void setDriver(int driver);

int getDeviceCount();
std::string getDeviceName(int device);
std::string getDeviceDetail(int device);
void openStream();
void closeStream();

std::vector<int> listSampleRates();
};


} // namespace rack

include/components.hpp → include/componentlibrary.hpp View File

@@ -336,6 +336,22 @@ struct BefacoSlidePot : SVGFader {
}
};

////////////////////
// IO widgets
////////////////////

struct USB_B_AudioWidget : AudioWidget, SVGWidget {
USB_B_AudioWidget() {
setSVG(SVG::load(assetGlobal("res/ComponentLibrary/USB-B.svg")));
}
};

struct DIN_MIDIWidget : MIDIWidget, SVGWidget {
DIN_MIDIWidget() {
setSVG(SVG::load(assetGlobal("res/ComponentLibrary/MIDI_DIN.svg")));
}
};

////////////////////
// Jacks
////////////////////

+ 1
- 1
include/rack.hpp View File

@@ -7,7 +7,7 @@
#include "engine.hpp"
#include "gui.hpp"
#include "app.hpp"
#include "components.hpp"
#include "componentlibrary.hpp"


namespace rack {


+ 3
- 0
include/widgets.hpp View File

@@ -25,6 +25,9 @@ inline Vec mm2px(Vec millimeters) {
return millimeters.mult(SVG_DPI / 25.4);
}

#define CHECKMARK_STRING "âś”"
#define CHECKMARK(_cond) ((_cond) ? CHECKMARK_STRING : "")


////////////////////
// resources


+ 366
- 0
res/ComponentLibrary/ADAT.svg View File

@@ -0,0 +1,366 @@
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+ 115
- 0
src/app/AudioWidget.cpp View File

@@ -0,0 +1,115 @@
#include "app.hpp"
#include "audio.hpp"


namespace rack {


struct AudioDriverItem : MenuItem {
AudioIO *audioIO;
int driver;
void onAction(EventAction &e) override {
audioIO->setDriver(driver);
}
};


struct AudioDeviceItem : MenuItem {
AudioIO *audioIO;
int device;
void onAction(EventAction &e) override {
audioIO->device = device;
audioIO->openStream();
}
};


struct AudioSampleRateItem : MenuItem {
AudioIO *audioIO;
int sampleRate;
void onAction(EventAction &e) override {
audioIO->sampleRate = sampleRate;
audioIO->openStream();
}
};


struct AudioBlockSizeItem : MenuItem {
AudioIO *audioIO;
int blockSize;
void onAction(EventAction &e) override {
audioIO->blockSize = blockSize;
audioIO->openStream();
}
};


void AudioWidget::onMouseDown(EventMouseDown &e) {
OpaqueWidget::onMouseDown(e);

if (!audioIO)
return;

Menu *menu = gScene->createMenu();

// Audio driver
menu->addChild(construct<MenuLabel>(&MenuLabel::text, "Audio driver"));
for (int driver : audioIO->listDrivers()) {
AudioDriverItem *item = new AudioDriverItem();
item->audioIO = audioIO;
item->driver = driver;
item->text = audioIO->getDriverName(driver);
item->rightText = CHECKMARK(item->driver == audioIO->getDriver());
menu->addChild(item);
}
menu->addChild(construct<MenuEntry>());

// Audio device
menu->addChild(construct<MenuLabel>(&MenuLabel::text, "Audio device"));
int deviceCount = audioIO->getDeviceCount();
{
AudioDeviceItem *item = new AudioDeviceItem();
item->audioIO = audioIO;
item->device = -1;
item->text = "No device";
item->rightText = CHECKMARK(item->device == audioIO->device);
menu->addChild(item);
}
for (int device = 0; device < deviceCount; device++) {
AudioDeviceItem *item = new AudioDeviceItem();
item->audioIO = audioIO;
item->device = device;
item->text = audioIO->getDeviceDetail(device);
item->rightText = CHECKMARK(item->device == audioIO->device);
menu->addChild(item);
}
menu->addChild(construct<MenuEntry>());

// Sample rate
menu->addChild(construct<MenuLabel>(&MenuLabel::text, "Sample rate"));
for (int sampleRate : audioIO->listSampleRates()) {
AudioSampleRateItem *item = new AudioSampleRateItem();
item->audioIO = audioIO;
item->sampleRate = sampleRate;
item->text = stringf("%d Hz", sampleRate);
item->rightText = CHECKMARK(item->sampleRate == audioIO->sampleRate);
menu->addChild(item);
}
menu->addChild(construct<MenuEntry>());

// Block size
menu->addChild(construct<MenuLabel>(&MenuLabel::text, "Block size"));
std::vector<int> blockSizes = {64, 128, 256, 512, 1024, 2048, 4096};
for (int blockSize : blockSizes) {
AudioBlockSizeItem *item = new AudioBlockSizeItem();
item->audioIO = audioIO;
item->blockSize = blockSize;
float latency = (float) blockSize / audioIO->sampleRate * 1000.0;
item->text = stringf("%d (%.1f ms)", blockSize, latency);
item->rightText = CHECKMARK(item->blockSize == audioIO->blockSize);
menu->addChild(item);
}
}


} // namespace rack

+ 1
- 1
src/app/Port.cpp View File

@@ -1,7 +1,7 @@
#include "app.hpp"
#include "gui.hpp"
#include "components.hpp"
#include "engine.hpp"
#include "componentlibrary.hpp"


namespace rack {


+ 10
- 11
src/app/Toolbar.cpp View File

@@ -53,13 +53,13 @@ struct FileChoice : ChoiceButton {
};


struct PauseItem : MenuItem {
struct EnginePauseItem : MenuItem {
void onAction(EventAction &e) override {
gPaused = !gPaused;
}
};

struct SampleRateItem : MenuItem {
struct EngineSampleRateItem : MenuItem {
float sampleRate;
void onAction(EventAction &e) override {
engineSetSampleRate(sampleRate);
@@ -67,22 +67,21 @@ struct SampleRateItem : MenuItem {
}
};

struct SampleRateChoice : ChoiceButton {
struct EngineSampleRateChoice : ChoiceButton {
void onAction(EventAction &e) override {
Menu *menu = gScene->createMenu();
menu->box.pos = getAbsoluteOffset(Vec(0, box.size.y));
menu->box.size.x = box.size.x;

PauseItem *pauseItem = new PauseItem();
EnginePauseItem *pauseItem = new EnginePauseItem();
pauseItem->text = gPaused ? "Resume engine" : "Pause engine";
menu->addChild(pauseItem);

float sampleRates[] = {44100, 48000, 88200, 96000, 176400, 192000};
int sampleRatesLen = sizeof(sampleRates) / sizeof(sampleRates[0]);
for (int i = 0; i < sampleRatesLen; i++) {
SampleRateItem *item = new SampleRateItem();
item->text = stringf("%.0f Hz", sampleRates[i]);
item->sampleRate = sampleRates[i];
std::vector<float> sampleRates = {44100, 48000, 88200, 96000, 176400, 192000};
for (float sampleRate : sampleRates) {
EngineSampleRateItem *item = new EngineSampleRateItem();
item->text = stringf("%.0f Hz", sampleRate);
item->sampleRate = sampleRate;
menu->addChild(item);
}
}
@@ -112,7 +111,7 @@ Toolbar::Toolbar() {
xPos += margin;

{
SampleRateChoice *srChoice = new SampleRateChoice();
EngineSampleRateChoice *srChoice = new EngineSampleRateChoice();
srChoice->box.pos = Vec(xPos, margin);
srChoice->box.size.x = 100;
addChild(srChoice);


+ 1
- 1
src/app/WireWidget.cpp View File

@@ -1,6 +1,6 @@
#include "app.hpp"
#include "engine.hpp"
#include "components.hpp"
#include "componentlibrary.hpp"
#include "gui.hpp"




+ 212
- 0
src/audio.cpp View File

@@ -0,0 +1,212 @@
#include "util.hpp"
#include "math.hpp"
#include "audio.hpp"


namespace rack {


AudioIO::AudioIO() {
setDriver(RtAudio::UNSPECIFIED);
}

AudioIO::~AudioIO() {
closeStream();
}

std::vector<int> AudioIO::listDrivers() {
std::vector<RtAudio::Api> apis;
RtAudio::getCompiledApi(apis);
std::vector<int> drivers;
for (RtAudio::Api api : apis)
drivers.push_back((int) api);
return drivers;
}

std::string AudioIO::getDriverName(int driver) {
switch (driver) {
case RtAudio::UNSPECIFIED: return "Unspecified";
case RtAudio::LINUX_ALSA: return "ALSA";
case RtAudio::LINUX_PULSE: return "PulseAudio";
case RtAudio::LINUX_OSS: return "OSS";
case RtAudio::UNIX_JACK: return "JACK";
case RtAudio::MACOSX_CORE: return "Core Audio";
case RtAudio::WINDOWS_WASAPI: return "WASAPI";
case RtAudio::WINDOWS_ASIO: return "ASIO";
case RtAudio::WINDOWS_DS: return "DirectSound";
case RtAudio::RTAUDIO_DUMMY: return "Dummy";
default: return "Unknown";
}
}

int AudioIO::getDriver() {
if (!stream)
return RtAudio::UNSPECIFIED;
return stream->getCurrentApi();
}

void AudioIO::setDriver(int driver) {
// closeStream();
if (stream)
delete stream;
stream = new RtAudio((RtAudio::Api) driver);
}

int AudioIO::getDeviceCount() {
if (!stream)
return 0;
return stream->getDeviceCount();
}

std::string AudioIO::getDeviceName(int device) {
if (!stream || device < 0)
return "";

try {
RtAudio::DeviceInfo deviceInfo = stream->getDeviceInfo(device);
return deviceInfo.name;
}
catch (RtAudioError &e) {
warn("Failed to query audio device: %s", e.what());
return "";
}
}

std::string AudioIO::getDeviceDetail(int device) {
if (!stream || device < 0)
return "";

try {
RtAudio::DeviceInfo deviceInfo = stream->getDeviceInfo(device);
return stringf("%s (%d in, %d out)", deviceInfo.name.c_str(), deviceInfo.inputChannels, deviceInfo.outputChannels);
}
catch (RtAudioError &e) {
warn("Failed to query audio device: %s", e.what());
return "";
}
}

static int rtCallback(void *outputBuffer, void *inputBuffer, unsigned int nFrames, double streamTime, RtAudioStreamStatus status, void *userData) {
AudioIO *audioIO = (AudioIO*) userData;
assert(audioIO);
// audioInterface->stepStream((const float *) inputBuffer, (float *) outputBuffer, nFrames);
return 0;
}

void AudioIO::openStream() {
// Close device but remember the current device number
int device = this->device;
closeStream();
if (!stream)
return;

// Open new device
if (device >= 0) {
RtAudio::DeviceInfo deviceInfo;
try {
deviceInfo = stream->getDeviceInfo(device);
}
catch (RtAudioError &e) {
warn("Failed to query audio device: %s", e.what());
return;
}

numOutputs = mini(deviceInfo.outputChannels, maxOutputs);
numInputs = mini(deviceInfo.inputChannels, maxInputs);

if (numOutputs == 0 && numInputs == 0) {
warn("Audio device %d has 0 inputs and 0 outputs");
return;
}

RtAudio::StreamParameters outParameters;
outParameters.deviceId = device;
outParameters.nChannels = numOutputs;

RtAudio::StreamParameters inParameters;
inParameters.deviceId = device;
inParameters.nChannels = numInputs;

RtAudio::StreamOptions options;
// options.flags |= RTAUDIO_SCHEDULE_REALTIME;

// Find closest sample rate
unsigned int closestSampleRate = 0;
for (unsigned int sr : deviceInfo.sampleRates) {
if (fabsf(sr - sampleRate) < fabsf(closestSampleRate - sampleRate)) {
closestSampleRate = sr;
}
}

try {
debug("Opening audio stream %d", device);
stream->openStream(
numOutputs == 0 ? NULL : &outParameters,
numInputs == 0 ? NULL : &inParameters,
RTAUDIO_FLOAT32, closestSampleRate, (unsigned int*) &blockSize, &rtCallback, this, &options, NULL);
}
catch (RtAudioError &e) {
warn("Failed to open audio stream: %s", e.what());
return;
}

try {
debug("Starting audio stream %d", device);
stream->startStream();
}
catch (RtAudioError &e) {
warn("Failed to start audio stream: %s", e.what());
return;
}

// Update sample rate because this may have changed
this->sampleRate = stream->getStreamSampleRate();
this->device = device;
}
}

void AudioIO::closeStream() {
if (stream) {
if (stream->isStreamRunning()) {
debug("Aborting audio stream %d", device);
try {
stream->abortStream();
}
catch (RtAudioError &e) {
warn("Failed to abort stream %s", e.what());
}
}
if (stream->isStreamOpen()) {
debug("Closing audio stream %d", device);
try {
stream->closeStream();
}
catch (RtAudioError &e) {
warn("Failed to close stream %s", e.what());
}
}
}

// Reset stream settings
device = -1;
numOutputs = 0;
numInputs = 0;
}

std::vector<int> AudioIO::listSampleRates() {
if (!stream || device < 0)
return {};

try {
RtAudio::DeviceInfo deviceInfo = stream->getDeviceInfo(device);
std::vector<int> sampleRates(deviceInfo.sampleRates.begin(), deviceInfo.sampleRates.end());
return sampleRates;
}
catch (RtAudioError &e) {
warn("Failed to query audio device: %s", e.what());
return {};
}
}


} // namespace rack

+ 50
- 436
src/core/AudioInterface.cpp View File

@@ -1,8 +1,8 @@
#include <assert.h>
#include <mutex>
#include <thread>
#include <algorithm>
#include "core.hpp"
#include "audio.hpp"
#include "dsp/samplerate.hpp"
#include "dsp/ringbuffer.hpp"

@@ -29,13 +29,7 @@ struct AudioInterface : Module {
NUM_OUTPUTS = AUDIO1_OUTPUT + 8
};

RtAudio *stream = NULL;
// Stream properties
int device = -1;
float sampleRate = 44100.0;
int blockSize = 256;
int numOutputs = 0;
int numInputs = 0;
AudioIO audioIO;

SampleRateConverter<8> inputSrc;
SampleRateConverter<8> outputSrc;
@@ -47,89 +41,43 @@ struct AudioInterface : Module {
DoubleRingBuffer<Frame<8>, (1<<15)> inputSrcBuffer;

AudioInterface() : Module(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS) {
setDriver(RtAudio::UNSPECIFIED);
}
~AudioInterface() {
closeStream();
}

void step() override;
void stepStream(const float *input, float *output, int numFrames);

int getDeviceCount();
std::string getDeviceName(int device);

void openStream();
void closeStream();

void setDriver(int driver) {
closeStream();
if (stream)
delete stream;
stream = new RtAudio((RtAudio::Api) driver);
}
int getDriver() {
if (!stream)
return RtAudio::UNSPECIFIED;
return stream->getCurrentApi();
}
std::vector<int> getAvailableDrivers() {
std::vector<RtAudio::Api> apis;
RtAudio::getCompiledApi(apis);
std::vector<int> drivers;
for (RtAudio::Api api : apis)
drivers.push_back(api);
return drivers;
}
std::string getDriverName(int driver) {
switch (driver) {
case RtAudio::UNSPECIFIED: return "Unspecified";
case RtAudio::LINUX_ALSA: return "ALSA";
case RtAudio::LINUX_PULSE: return "PulseAudio";
case RtAudio::LINUX_OSS: return "OSS";
case RtAudio::UNIX_JACK: return "JACK";
case RtAudio::MACOSX_CORE: return "Core Audio";
case RtAudio::WINDOWS_WASAPI: return "WASAPI";
case RtAudio::WINDOWS_ASIO: return "ASIO";
case RtAudio::WINDOWS_DS: return "DirectSound";
case RtAudio::RTAUDIO_DUMMY: return "Dummy";
default: return "Unknown";
}
}

std::vector<float> getSampleRates();

json_t *toJson() override {
json_t *rootJ = json_object();
json_object_set_new(rootJ, "driver", json_integer(getDriver()));
json_object_set_new(rootJ, "device", json_integer(device));
json_object_set_new(rootJ, "sampleRate", json_real(sampleRate));
json_object_set_new(rootJ, "blockSize", json_integer(blockSize));
// json_object_set_new(rootJ, "driver", json_integer(getDriver()));
// json_object_set_new(rootJ, "device", json_integer(device));
// json_object_set_new(rootJ, "audioIO.sampleRate", json_real(audioIO.sampleRate));
// json_object_set_new(rootJ, "audioIO.blockSize", json_integer(audioIO.blockSize));
return rootJ;
}

void fromJson(json_t *rootJ) override {
json_t *driverJ = json_object_get(rootJ, "driver");
if (driverJ)
setDriver(json_number_value(driverJ));
// json_t *driverJ = json_object_get(rootJ, "driver");
// if (driverJ)
// setDriver(json_number_value(driverJ));

json_t *deviceJ = json_object_get(rootJ, "device");
if (deviceJ)
device = json_number_value(deviceJ);
// json_t *deviceJ = json_object_get(rootJ, "device");
// if (deviceJ)
// device = json_number_value(deviceJ);

json_t *sampleRateJ = json_object_get(rootJ, "sampleRate");
if (sampleRateJ)
sampleRate = json_number_value(sampleRateJ);
// json_t *sampleRateJ = json_object_get(rootJ, "audioIO.sampleRate");
// if (sampleRateJ)
// audioIO.sampleRate = json_number_value(sampleRateJ);

json_t *blockSizeJ = json_object_get(rootJ, "blockSize");
if (blockSizeJ)
blockSize = json_integer_value(blockSizeJ);
// json_t *blockSizeJ = json_object_get(rootJ, "audioIO.blockSize");
// if (blockSizeJ)
// audioIO.blockSize = json_integer_value(blockSizeJ);

openStream();
// openStream();
}

void onReset() override {
closeStream();
audioIO.closeStream();
}
};

@@ -149,15 +97,15 @@ struct AudioInterface : Module {
void AudioInterface::step() {
// debug("inputBuffer %d inputSrcBuffer %d outputBuffer %d", inputBuffer.size(), inputSrcBuffer.size(), outputBuffer.size());
// Read/write stream if we have enough input, OR the output buffer is empty if we have no input
if (numOutputs > 0) {
TIMED_SLEEP_LOCK(inputSrcBuffer.size() < blockSize, 100e-6, 0.2);
if (audioIO.numOutputs > 0) {
TIMED_SLEEP_LOCK(inputSrcBuffer.size() < audioIO.blockSize, 100e-6, 0.2);
}
else if (numInputs > 0) {
else if (audioIO.numInputs > 0) {
TIMED_SLEEP_LOCK(!outputBuffer.empty(), 100e-6, 0.2);
}

// Get input and pass it through the sample rate converter
if (numOutputs > 0) {
if (audioIO.numOutputs > 0) {
if (!inputBuffer.full()) {
Frame<8> f;
for (int i = 0; i < 8; i++) {
@@ -169,7 +117,7 @@ void AudioInterface::step() {
// Once full, sample rate convert the input
// inputBuffer -> SRC -> inputSrcBuffer
if (inputBuffer.full()) {
inputSrc.setRates(engineGetSampleRate(), sampleRate);
inputSrc.setRates(engineGetSampleRate(), audioIO.sampleRate);
int inLen = inputBuffer.size();
int outLen = inputSrcBuffer.capacity();
inputSrc.process(inputBuffer.startData(), &inLen, inputSrcBuffer.endData(), &outLen);
@@ -189,29 +137,29 @@ void AudioInterface::step() {

void AudioInterface::stepStream(const float *input, float *output, int numFrames) {
if (gPaused) {
memset(output, 0, sizeof(float) * numOutputs * numFrames);
memset(output, 0, sizeof(float) * audioIO.numOutputs * numFrames);
return;
}

if (numOutputs > 0) {
if (audioIO.numOutputs > 0) {
// Wait for enough input before proceeding
TIMED_SLEEP_LOCK(inputSrcBuffer.size() >= numFrames, 100e-6, 0.2);
}
else if (numInputs > 0) {
else if (audioIO.numInputs > 0) {
TIMED_SLEEP_LOCK(outputBuffer.empty(), 100e-6, 0.2);
}

// input stream -> output buffer
if (numInputs > 0) {
if (audioIO.numInputs > 0) {
Frame<8> inputFrames[numFrames];
for (int i = 0; i < numFrames; i++) {
for (int c = 0; c < 8; c++) {
inputFrames[i].samples[c] = (c < numInputs) ? input[i*numInputs + c] : 0.0;
inputFrames[i].samples[c] = (c < audioIO.numInputs) ? input[i*audioIO.numInputs + c] : 0.0;
}
}

// Pass output through sample rate converter
outputSrc.setRates(sampleRate, engineGetSampleRate());
outputSrc.setRates(audioIO.sampleRate, engineGetSampleRate());
int inLen = numFrames;
int outLen = outputBuffer.capacity();
outputSrc.process(inputFrames, &inLen, outputBuffer.endData(), &outLen);
@@ -219,7 +167,7 @@ void AudioInterface::stepStream(const float *input, float *output, int numFrames
}

// input buffer -> output stream
if (numOutputs > 0) {
if (audioIO.numOutputs > 0) {
for (int i = 0; i < numFrames; i++) {
Frame<8> f;
if (inputSrcBuffer.empty()) {
@@ -228,304 +176,23 @@ void AudioInterface::stepStream(const float *input, float *output, int numFrames
else {
f = inputSrcBuffer.shift();
}
for (int c = 0; c < numOutputs; c++) {
output[i*numOutputs + c] = clampf(f.samples[c], -1.0, 1.0);
for (int c = 0; c < audioIO.numOutputs; c++) {
output[i*audioIO.numOutputs + c] = clampf(f.samples[c], -1.0, 1.0);
}
}
}
}

int AudioInterface::getDeviceCount() {
if (!stream)
return 0;
return stream->getDeviceCount();
}

std::string AudioInterface::getDeviceName(int device) {
if (!stream || device < 0)
return "";

try {
RtAudio::DeviceInfo deviceInfo = stream->getDeviceInfo(device);
return stringf("%s (%d in, %d out)", deviceInfo.name.c_str(), deviceInfo.inputChannels, deviceInfo.outputChannels);
}
catch (RtAudioError &e) {
warn("Failed to query audio device: %s", e.what());
return "";
}
}

static int rtCallback(void *outputBuffer, void *inputBuffer, unsigned int nFrames, double streamTime, RtAudioStreamStatus status, void *userData) {
AudioInterface *audioInterface = (AudioInterface *) userData;
assert(audioInterface);
audioInterface->stepStream((const float *) inputBuffer, (float *) outputBuffer, nFrames);
return 0;
}

void AudioInterface::openStream() {
int device = this->device;
closeStream();
if (!stream)
return;

// Open new device
if (device >= 0) {
RtAudio::DeviceInfo deviceInfo;
try {
deviceInfo = stream->getDeviceInfo(device);
}
catch (RtAudioError &e) {
warn("Failed to query audio device: %s", e.what());
return;
}

numOutputs = mini(deviceInfo.outputChannels, 8);
numInputs = mini(deviceInfo.inputChannels, 8);

if (numOutputs == 0 && numInputs == 0) {
warn("Audio device %d has 0 inputs and 0 outputs");
return;
}

RtAudio::StreamParameters outParameters;
outParameters.deviceId = device;
outParameters.nChannels = numOutputs;

RtAudio::StreamParameters inParameters;
inParameters.deviceId = device;
inParameters.nChannels = numInputs;

RtAudio::StreamOptions options;
// options.flags |= RTAUDIO_SCHEDULE_REALTIME;

// Find closest sample rate
unsigned int closestSampleRate = 0;
for (unsigned int sr : deviceInfo.sampleRates) {
if (fabsf(sr - sampleRate) < fabsf(closestSampleRate - sampleRate)) {
closestSampleRate = sr;
}
}

try {
// Don't use stream parameters if 0 input or output channels
debug("Opening audio stream %d", device);
stream->openStream(
numOutputs == 0 ? NULL : &outParameters,
numInputs == 0 ? NULL : &inParameters,
RTAUDIO_FLOAT32, closestSampleRate, (unsigned int*) &blockSize, &rtCallback, this, &options, NULL);
}
catch (RtAudioError &e) {
warn("Failed to open audio stream: %s", e.what());
return;
}

try {
debug("Starting audio stream %d", device);
stream->startStream();
}
catch (RtAudioError &e) {
warn("Failed to start audio stream: %s", e.what());
return;
}

// Update sample rate because this may have changed
this->sampleRate = stream->getStreamSampleRate();
this->device = device;
}
}

void AudioInterface::closeStream() {
if (stream) {
if (stream->isStreamRunning()) {
debug("Aborting audio stream %d", device);
try {
stream->abortStream();
}
catch (RtAudioError &e) {
warn("Failed to abort stream %s", e.what());
}
}
if (stream->isStreamOpen()) {
debug("Closing audio stream %d", device);
try {
stream->closeStream();
}
catch (RtAudioError &e) {
warn("Failed to close stream %s", e.what());
}
}
}

// Reset stream settings
device = -1;
numOutputs = 0;
numInputs = 0;

// Clear buffers
inputBuffer.clear();
outputBuffer.clear();
inputSrcBuffer.clear();
inputSrc.reset();
outputSrc.reset();
}

std::vector<float> AudioInterface::getSampleRates() {
std::vector<float> allowedSampleRates = {44100, 48000, 88200, 96000, 176400, 192000};
if (!stream || device < 0)
return allowedSampleRates;

try {
std::vector<float> sampleRates;
RtAudio::DeviceInfo deviceInfo = stream->getDeviceInfo(device);
for (int sr : deviceInfo.sampleRates) {
float sampleRate = sr;
auto allowedIt = std::find(allowedSampleRates.begin(), allowedSampleRates.end(), sampleRate);
if (allowedIt != allowedSampleRates.end()) {
sampleRates.push_back(sampleRate);
}
}
return sampleRates;
}
catch (RtAudioError &e) {
warn("Failed to query audio device: %s", e.what());
return {};
}
}



struct AudioDriverItem : MenuItem {
AudioInterface *audioInterface;
int driver;
void onAction(EventAction &e) override {
audioInterface->setDriver(driver);
}
};

struct AudioDriverChoice : ChoiceButton {
AudioInterface *audioInterface;
void onAction(EventAction &e) override {
Menu *menu = gScene->createMenu();
menu->box.pos = getAbsoluteOffset(Vec(0, box.size.y)).round();
menu->box.size.x = box.size.x;

for (int driver : audioInterface->getAvailableDrivers()) {
AudioDriverItem *audioItem = new AudioDriverItem();
audioItem->audioInterface = audioInterface;
audioItem->driver = driver;
audioItem->text = audioInterface->getDriverName(driver);
menu->addChild(audioItem);
}
}
void step() override {
text = audioInterface->getDriverName(audioInterface->getDriver());
}
};


struct AudioDeviceItem : MenuItem {
AudioInterface *audioInterface;
int device;
void onAction(EventAction &e) override {
audioInterface->device = device;
audioInterface->openStream();
}
};

struct AudioDeviceChoice : ChoiceButton {
int lastDeviceId = -1;
AudioInterface *audioInterface;
void onAction(EventAction &e) override {
Menu *menu = gScene->createMenu();
menu->box.pos = getAbsoluteOffset(Vec(0, box.size.y)).round();
menu->box.size.x = box.size.x;

int deviceCount = audioInterface->getDeviceCount();
{
AudioDeviceItem *audioItem = new AudioDeviceItem();
audioItem->audioInterface = audioInterface;
audioItem->device = -1;
audioItem->text = "No device";
menu->addChild(audioItem);
}
for (int device = 0; device < deviceCount; device++) {
AudioDeviceItem *audioItem = new AudioDeviceItem();
audioItem->audioInterface = audioInterface;
audioItem->device = device;
audioItem->text = audioInterface->getDeviceName(device);
menu->addChild(audioItem);
}
}
void step() override {
if (lastDeviceId != audioInterface->device) {
std::string name = audioInterface->getDeviceName(audioInterface->device);
text = ellipsize(name, 24);
lastDeviceId = audioInterface->device;
}
}
};


struct SampleRateItem : MenuItem {
AudioInterface *audioInterface;
float sampleRate;
void onAction(EventAction &e) override {
audioInterface->sampleRate = sampleRate;
audioInterface->openStream();
}
};

struct SampleRateChoice : ChoiceButton {
AudioInterface *audioInterface;
void onAction(EventAction &e) override {
Menu *menu = gScene->createMenu();
menu->box.pos = getAbsoluteOffset(Vec(0, box.size.y)).round();
menu->box.size.x = box.size.x;

for (float sampleRate : audioInterface->getSampleRates()) {
SampleRateItem *item = new SampleRateItem();
item->audioInterface = audioInterface;
item->sampleRate = sampleRate;
item->text = stringf("%.0f Hz", sampleRate);
menu->addChild(item);
}
}
void step() override {
this->text = stringf("%.0f Hz", audioInterface->sampleRate);
}
};


struct BlockSizeItem : MenuItem {
AudioInterface *audioInterface;
int blockSize;
void onAction(EventAction &e) override {
audioInterface->blockSize = blockSize;
audioInterface->openStream();
}
};
// void AudioInterface::closeStream() {
// // Clear buffers
// inputBuffer.clear();
// outputBuffer.clear();
// inputSrcBuffer.clear();
// inputSrc.reset();
// outputSrc.reset();
// }

struct BlockSizeChoice : ChoiceButton {
AudioInterface *audioInterface;
void onAction(EventAction &e) override {
Menu *menu = gScene->createMenu();
menu->box.pos = getAbsoluteOffset(Vec(0, box.size.y)).round();
menu->box.size.x = box.size.x;

const int blockSizes[] = {64, 128, 256, 512, 1024, 2048, 4096};
int blockSizesLen = sizeof(blockSizes) / sizeof(blockSizes[0]);
for (int i = 0; i < blockSizesLen; i++) {
BlockSizeItem *item = new BlockSizeItem();
item->audioInterface = audioInterface;
item->blockSize = blockSizes[i];
item->text = stringf("%d", blockSizes[i]);
menu->addChild(item);
}
}
void step() override {
this->text = stringf("%d", audioInterface->blockSize);
}
};


AudioInterfaceWidget::AudioInterfaceWidget() {
@@ -545,69 +212,9 @@ AudioInterfaceWidget::AudioInterfaceWidget() {

Vec margin = Vec(5, 2);
float labelHeight = 15;
float yPos = margin.y;
float yPos = margin.y + 100;
float xPos;

{
Label *label = new Label();
label->box.pos = Vec(margin.x, yPos);
label->text = "Audio driver";
addChild(label);
yPos += labelHeight + margin.y;

AudioDriverChoice *choice = new AudioDriverChoice();
choice->audioInterface = module;
choice->box.pos = Vec(margin.x, yPos);
choice->box.size.x = box.size.x - 2*margin.x;
addChild(choice);
yPos += choice->box.size.y + margin.y;
}

{
Label *label = new Label();
label->box.pos = Vec(margin.x, yPos);
label->text = "Audio device";
addChild(label);
yPos += labelHeight + margin.y;

AudioDeviceChoice *choice = new AudioDeviceChoice();
choice->audioInterface = module;
choice->box.pos = Vec(margin.x, yPos);
choice->box.size.x = box.size.x - 2*margin.x;
addChild(choice);
yPos += choice->box.size.y + margin.y;
}

{
Label *label = new Label();
label->box.pos = Vec(margin.x, yPos);
label->text = "Sample rate";
addChild(label);
yPos += labelHeight + margin.y;

SampleRateChoice *choice = new SampleRateChoice();
choice->audioInterface = module;
choice->box.pos = Vec(margin.x, yPos);
choice->box.size.x = box.size.x - 2*margin.x;
addChild(choice);
yPos += choice->box.size.y + margin.y;
}

{
Label *label = new Label();
label->box.pos = Vec(margin.x, yPos);
label->text = "Block size";
addChild(label);
yPos += labelHeight + margin.y;

BlockSizeChoice *choice = new BlockSizeChoice();
choice->audioInterface = module;
choice->box.pos = Vec(margin.x, yPos);
choice->box.size.x = box.size.x - 2*margin.x;
addChild(choice);
yPos += choice->box.size.y + margin.y;
}

{
Label *label = new Label();
label->box.pos = Vec(margin.x, yPos);
@@ -675,4 +282,11 @@ AudioInterfaceWidget::AudioInterfaceWidget() {
xPos += 37 + margin.x;
}
yPos += 35 + margin.y;

AudioWidget *audioWidget = construct<USB_B_AudioWidget>();
audioWidget->audioIO = &module->audioIO;
addChild(audioWidget);
// Widget *w = construct<DIN_MIDIWidget>();
// w->box.pos = Vec(100, 0);
// addChild(w);
}

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