Add the test program for stereo
This commit is contained in:
Jean Pierre Cimalando
parent
33cc4a6518
commit
ef5a2fa546
3 changed files with 341 additions and 0 deletions
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@ -42,6 +42,11 @@ if(JACK_FOUND AND TARGET Qt5::Widgets)
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target_include_directories(sfizz_demo_filters PRIVATE ${JACK_INCLUDE_DIRS})
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target_link_libraries(sfizz_demo_filters PRIVATE sfizz::sfizz Qt5::Widgets ${JACK_LIBRARIES})
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set_target_properties(sfizz_demo_filters PROPERTIES AUTOUIC ON)
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add_executable(sfizz_demo_stereo DemoStereo.cpp)
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target_include_directories(sfizz_demo_stereo PRIVATE ${JACK_INCLUDE_DIRS})
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target_link_libraries(sfizz_demo_stereo PRIVATE sfizz::sfizz Qt5::Widgets ${JACK_LIBRARIES})
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set_target_properties(sfizz_demo_stereo PROPERTIES AUTOUIC ON)
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endif()
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file(COPY "." DESTINATION ${CMAKE_BINARY_DIR}/tests)
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238
tests/DemoStereo.cpp
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238
tests/DemoStereo.cpp
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@ -0,0 +1,238 @@
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// SPDX-License-Identifier: BSD-2-Clause
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// This code is part of the sfizz library and is licensed under a BSD 2-clause
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// license. You should have receive a LICENSE.md file along with the code.
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// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
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#include "sfizz/SIMDHelpers.h"
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#include "ui_DemoStereo.h"
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#include <QApplication>
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#include <QMainWindow>
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#include <QMessageBox>
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#include <QButtonGroup>
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#include <QDebug>
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#include <jack/jack.h>
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#include <memory>
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///
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struct jack_delete {
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void operator()(jack_client_t *x) const noexcept { jack_client_close(x); }
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};
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typedef std::unique_ptr<jack_client_t, jack_delete> jack_client_u;
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///
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class DemoApp : public QApplication {
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public:
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DemoApp(int &argc, char **argv);
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bool initSound();
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void initWindow();
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private:
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static int processAudio(jack_nframes_t nframes, void *cbdata);
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private:
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void valueChangedWidth(int value);
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void valueChangedPan(int value);
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private:
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QMainWindow *fWindow = nullptr;
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Ui::DemoStereoWindow fUi;
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static constexpr int widthMin = -100;
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static constexpr int widthMax = +100;
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static constexpr int panMin = -100;
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static constexpr int panMax = +100;
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int fWidth = 100;
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int fPan = 0;
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std::unique_ptr<float[]> fTmpWidthEnvelope;
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std::unique_ptr<float[]> fTmpPositionEnvelope;
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std::unique_ptr<float[]> fTmpBuffer1;
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jack_client_u fClient;
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jack_port_t *fPorts[4] = {};
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};
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DemoApp::DemoApp(int &argc, char **argv)
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: QApplication(argc, argv)
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{
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setApplicationName(tr("Sfizz Stereo"));
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}
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bool DemoApp::initSound()
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{
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jack_client_t *client = jack_client_open(
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applicationName().toUtf8().data(), JackNoStartServer, nullptr);
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if (!client) {
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QMessageBox::critical(nullptr, tr("Error"), tr("Cannot open JACK audio."));
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return false;
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}
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fClient.reset(client);
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uint32_t bufsize = jack_get_buffer_size(client);
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fTmpWidthEnvelope.reset(new float[bufsize]);
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fTmpPositionEnvelope.reset(new float[bufsize]);
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fTmpBuffer1.reset(new float[bufsize]);
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fPorts[0] = jack_port_register(client, "in_left", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
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fPorts[1] = jack_port_register(client, "in_right", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
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fPorts[2] = jack_port_register(client, "out_left", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
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fPorts[3] = jack_port_register(client, "out_right", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
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if (!(fPorts[0] && fPorts[1] && fPorts[2] && fPorts[3])) {
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QMessageBox::critical(nullptr, tr("Error"), tr("Cannot register JACK ports."));
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return false;
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}
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jack_set_process_callback(client, &processAudio, this);
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if (jack_activate(client) != 0) {
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QMessageBox::critical(nullptr, tr("Error"), tr("Cannot activate JACK client."));
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return false;
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}
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return true;
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}
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void DemoApp::initWindow()
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{
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QMainWindow *window = new QMainWindow;
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fWindow = window;
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fUi.setupUi(window);
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window->setWindowTitle(applicationDisplayName());
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fUi.valWidth->setRange(widthMin, widthMax);
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fUi.valPan->setRange(panMin, panMax);
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fUi.spinWidth->setRange(widthMin, widthMax);
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fUi.spinPan->setRange(panMin, panMax);
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fUi.valWidth->setValue(fWidth);
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fUi.valPan->setValue(fPan);
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fUi.spinWidth->setValue(fWidth);
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fUi.spinPan->setValue(fPan);
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connect(
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fUi.valWidth, &QSlider::valueChanged,
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this, [this](int value) { valueChangedWidth(value); });
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connect(
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fUi.spinWidth, QOverload<int>::of(&QSpinBox::valueChanged),
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this, [this](int value) { valueChangedWidth(value); });
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connect(
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fUi.valPan, &QSlider::valueChanged,
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this, [this](int value) { valueChangedPan(value); });
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connect(
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fUi.spinPan, QOverload<int>::of(&QSpinBox::valueChanged),
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this, [this](int value) { valueChangedPan(value); });
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window->adjustSize();
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window->setFixedSize(window->size());
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window->show();
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}
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int DemoApp::processAudio(jack_nframes_t nframes, void *cbdata)
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{
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DemoApp *self = reinterpret_cast<DemoApp *>(cbdata);
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absl::Span<float> leftBuffer {
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reinterpret_cast<float *>(jack_port_get_buffer(self->fPorts[2], nframes)),
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nframes};
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absl::Span<float> rightBuffer {
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reinterpret_cast<float *>(jack_port_get_buffer(self->fPorts[3], nframes)),
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nframes};
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std::copy_n(
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reinterpret_cast<float *>(jack_port_get_buffer(self->fPorts[0], nframes)),
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nframes, leftBuffer.begin());
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std::copy_n(
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reinterpret_cast<float *>(jack_port_get_buffer(self->fPorts[1], nframes)),
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nframes, rightBuffer.begin());
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absl::Span<float> widthEnvelope{self->fTmpWidthEnvelope.get(), nframes};
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absl::Span<float> positionEnvelope{self->fTmpPositionEnvelope.get(), nframes};
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absl::Span<float> tempSpan1{self->fTmpBuffer1.get(), nframes};
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std::fill(widthEnvelope.begin(), widthEnvelope.end(), self->fWidth * 0.01f);
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std::fill(positionEnvelope.begin(), positionEnvelope.end(), self->fPan * 0.01f);
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using namespace sfz;
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/* TODO(jpc) have this code in common instead of copy-paste */
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// Create mid/side from left/right in the output buffer
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// Add const aliases to be slightly more readable
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const auto leftBufferCopy = tempSpan1;
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copy<float>(leftBuffer, leftBufferCopy);
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const auto midBuffer = leftBuffer;
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add<float>(rightBuffer, midBuffer);
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const auto sideBuffer = rightBuffer;
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applyGain<float>(-1.0f, sideBuffer);
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add<float>(leftBufferCopy, sideBuffer);
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applyGain<float>(sqrtTwoInv<float>, midBuffer);
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applyGain<float>(sqrtTwoInv<float>, sideBuffer);
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// Apply the width process
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width<float>(widthEnvelope, midBuffer, sideBuffer);
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// Copy the mid channel into another span
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const auto midBufferCopy = tempSpan1;
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copy<float>(midBuffer, midBufferCopy);
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pan<float>(positionEnvelope, midBuffer, midBufferCopy);
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// Rebuild left/right
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// Recall that midBuffer and leftBuffer point to the same buffer
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add<float>(sideBuffer, leftBuffer);
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applyGain(sqrtTwoInv<float>, leftBuffer);
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// Recall that sideBuffer and rightBuffer point to the same buffer
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applyGain<float>(-1.0f, sideBuffer);
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add<float>(midBufferCopy, sideBuffer);
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applyGain(sqrtTwoInv<float>, rightBuffer);
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return 0;
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}
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void DemoApp::valueChangedWidth(int value)
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{
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fUi.valWidth->blockSignals(true);
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fUi.valWidth->setValue(value);
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fUi.valWidth->blockSignals(false);
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fUi.spinWidth->blockSignals(true);
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fUi.spinWidth->setValue(value);
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fUi.spinWidth->blockSignals(false);
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fWidth = value;
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}
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void DemoApp::valueChangedPan(int value)
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{
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fUi.valPan->blockSignals(true);
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fUi.valPan->setValue(value);
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fUi.valPan->blockSignals(false);
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fUi.spinPan->blockSignals(true);
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fUi.spinPan->setValue(value);
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fUi.spinPan->blockSignals(false);
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fPan = value;
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}
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int main(int argc, char *argv[])
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{
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DemoApp app(argc, argv);
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if (!app.initSound())
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return 1;
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app.initWindow();
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return app.exec();
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}
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98
tests/DemoStereo.ui
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98
tests/DemoStereo.ui
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@ -0,0 +1,98 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>DemoStereoWindow</class>
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<widget class="QMainWindow" name="DemoStereoWindow">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>615</width>
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<height>72</height>
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</rect>
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</property>
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<widget class="QWidget" name="centralwidget">
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<layout class="QGridLayout" name="gridLayout">
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<item row="0" column="0">
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<widget class="QLabel" name="label">
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<property name="text">
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<string>Width</string>
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</property>
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</widget>
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</item>
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<item row="0" column="1">
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<widget class="QSlider" name="valWidth">
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<property name="minimumSize">
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<size>
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<width>500</width>
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<height>0</height>
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</size>
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</property>
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<property name="minimum">
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<number>-100</number>
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</property>
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<property name="maximum">
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<number>100</number>
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</property>
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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<property name="tickPosition">
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<enum>QSlider::TicksBelow</enum>
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</property>
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</widget>
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</item>
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<item row="0" column="2">
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<widget class="QSpinBox" name="spinWidth">
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<property name="minimum">
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<number>-100</number>
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</property>
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<property name="maximum">
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<number>100</number>
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</property>
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</widget>
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</item>
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<item row="1" column="0">
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<widget class="QLabel" name="label_2">
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<property name="text">
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<string>Pan</string>
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</property>
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</widget>
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</item>
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<item row="1" column="1">
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<widget class="QSlider" name="valPan">
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<property name="minimumSize">
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<size>
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<width>500</width>
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<height>0</height>
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</size>
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</property>
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<property name="minimum">
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<number>-100</number>
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</property>
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<property name="maximum">
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<number>100</number>
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</property>
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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<property name="tickPosition">
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<enum>QSlider::TicksBelow</enum>
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</property>
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</widget>
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</item>
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<item row="1" column="2">
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<widget class="QSpinBox" name="spinPan">
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<property name="minimum">
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<number>-100</number>
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</property>
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<property name="maximum">
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<number>100</number>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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</widget>
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<resources/>
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<connections/>
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</ui>
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