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dsp-paw/gui/source/gui_device.cpp

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#include "circular.hpp"
#include "imgui.h"
#include "imgui_internal.h"
#include "ImGuiFileDialog.h"
#include "kiss_fftr.h"
#include "stmdsp.hpp"
#include <array>
#include <cstdio>
#include <memory>
#include <string>
#include <string_view>
namespace ImGui
{
void PushDisabled()
{
ImGuiContext& g = *GImGui;
bool was_disabled = (g.CurrentItemFlags & ImGuiItemFlags_Disabled) != 0;
if (!was_disabled)
PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.6f);
PushItemFlag(ImGuiItemFlags_Disabled, true);
}
void PopDisabled()
{
ImGuiContext& g = *GImGui;
bool was_disabled = (g.CurrentItemFlags & ImGuiItemFlags_Disabled) != 0;
PopItemFlag();
if (was_disabled && (g.CurrentItemFlags & ImGuiItemFlags_Disabled) == 0)
PopStyleVar();
}
}
// Used for status queries and buffer size configuration.
extern std::shared_ptr<stmdsp::device> m_device;
void deviceAlgorithmUnload();
void deviceAlgorithmUpload();
bool deviceConnect();
void deviceGenLoadFormula(const std::string& list);
void deviceGenLoadList(std::string_view list);
bool deviceGenStartToggle();
void deviceLoadAudioFile(const std::string& file);
void deviceLoadLogFile(const std::string& file);
void deviceSetSampleRate(unsigned int index);
void deviceSetInputDrawing(bool enabled);
void deviceStart(bool fetchSamples);
void deviceStartMeasurement();
void deviceUpdateDrawBufferSize(double timeframe);
std::size_t pullFromDrawQueue(
CircularBuffer<std::vector, stmdsp::dacsample_t>& circ);
std::size_t pullFromInputDrawQueue(
CircularBuffer<std::vector, stmdsp::dacsample_t>& circ);
static std::string sampleRatePreview = "?";
static bool measureCodeTime = false;
static bool logResults = false;
static bool drawSamples = false;
static bool drawFrequencies = false;
static bool popupRequestBuffer = false;
static bool popupRequestSiggen = false;
static bool popupRequestLog = false;
static double drawSamplesTimeframe = 1.0; // seconds
static std::string getSampleRatePreview(unsigned int rate)
{
return std::to_string(rate / 1000) + " kHz";
}
static std::string connectLabel ("Connect");
void deviceRenderDisconnect()
{
connectLabel = "Connect";
measureCodeTime = false;
logResults = false;
drawSamples = false;
drawFrequencies = false;
}
void deviceRenderMenu()
{
auto addMenuItem = [](const std::string& label, bool enable, auto action) {
if (ImGui::MenuItem(label.c_str(), nullptr, false, enable)) {
action();
}
};
if (ImGui::BeginMenu("Device")) {
addMenuItem(connectLabel, !m_device || !m_device->is_running(), [&] {
if (deviceConnect()) {
connectLabel = "Disconnect";
sampleRatePreview =
getSampleRatePreview(m_device->get_sample_rate());
deviceUpdateDrawBufferSize(drawSamplesTimeframe);
} else {
deviceRenderDisconnect();
}
});
const bool isConnected = m_device ? true : false;
const bool isRunning = isConnected && m_device->is_running();
ImGui::Separator();
static std::string startLabel ("Start");
addMenuItem(startLabel, isConnected, [&] {
startLabel = isRunning ? "Start" : "Stop";
deviceStart(logResults || drawSamples || drawFrequencies);
if (logResults && isRunning)
logResults = false;
});
addMenuItem("Upload algorithm", isConnected && !isRunning,
deviceAlgorithmUpload);
addMenuItem("Unload algorithm", isConnected && !isRunning,
deviceAlgorithmUnload);
addMenuItem("Measure Code Time", isRunning, deviceStartMeasurement);
ImGui::Separator();
if (!isConnected || isRunning)
ImGui::PushDisabled(); // Hey, pushing disabled!
ImGui::Checkbox("Plot over time", &drawSamples);
ImGui::Checkbox("Plot over freq.", &drawFrequencies);
if (ImGui::Checkbox("Log results...", &logResults)) {
if (logResults)
popupRequestLog = true;
}
addMenuItem("Set buffer size...", true, [] { popupRequestBuffer = true; });
if (!isConnected || isRunning)
ImGui::PopDisabled();
ImGui::Separator();
addMenuItem("Load signal generator",
isConnected && !m_device->is_siggening() && !m_device->is_running(),
[] { popupRequestSiggen = true; });
static std::string startSiggenLabel ("Start signal generator");
addMenuItem(startSiggenLabel, isConnected, [&] {
const bool running = deviceGenStartToggle();
startSiggenLabel = running ? "Stop signal generator"
: "Start signal generator";
});
ImGui::EndMenu();
}
}
void deviceRenderToolbar()
{
ImGui::SameLine();
if (ImGui::Button("Upload"))
deviceAlgorithmUpload();
ImGui::SameLine();
ImGui::SetNextItemWidth(100);
const bool enable =
m_device && !m_device->is_running() && !m_device->is_siggening();
if (!enable)
ImGui::PushDisabled();
if (ImGui::BeginCombo("##", sampleRatePreview.c_str())) {
extern std::array<unsigned int, 6> sampleRateInts;
for (const auto& r : sampleRateInts) {
const auto s = getSampleRatePreview(r);
if (ImGui::Selectable(s.c_str())) {
sampleRatePreview = s;
deviceSetSampleRate(r);
deviceUpdateDrawBufferSize(drawSamplesTimeframe);
}
}
ImGui::EndCombo();
}
if (!enable)
ImGui::PopDisabled();
}
void deviceRenderWidgets()
{
static std::string siggenInput (32768, '\0');
static int siggenOption = 0;
if (popupRequestSiggen) {
popupRequestSiggen = false;
ImGui::OpenPopup("siggen");
} else if (popupRequestBuffer) {
popupRequestBuffer = false;
ImGui::OpenPopup("buffer");
} else if (popupRequestLog) {
popupRequestLog = false;
ImGuiFileDialog::Instance()->OpenDialog(
"ChooseFileLog", "Choose File", ".csv", ".", 1, nullptr, ImGuiFileDialogFlags_Modal);
}
if (ImGui::BeginPopup("siggen")) {
if (ImGui::RadioButton("List", &siggenOption, 0)) {
siggenInput.resize(32768);
siggenInput[0] = '\0';
}
ImGui::SameLine();
if (ImGui::RadioButton("Formula", &siggenOption, 1)) {
siggenInput.resize(1024);
siggenInput[0] = '\0';
}
ImGui::SameLine();
if (ImGui::RadioButton("Audio File", &siggenOption, 2))
siggenInput.clear();
if (siggenOption == 2) {
if (ImGui::Button("Choose File")) {
// This dialog will override the siggen popup, closing it.
ImGuiFileDialog::Instance()->OpenDialog(
"ChooseFileGen", "Choose File", ".wav", ".", 1, nullptr, ImGuiFileDialogFlags_Modal);
}
} else {
ImGui::Text(siggenOption == 0 ? "Enter a list of numbers:"
: "Enter a formula. x = sample #, y = -1 to 1.\nf(x) = ");
ImGui::PushStyleColor(ImGuiCol_FrameBg, {.8, .8, .8, 1});
ImGui::InputText("##", siggenInput.data(), siggenInput.size());
ImGui::PopStyleColor();
}
if (ImGui::Button("Save")) {
switch (siggenOption) {
case 0:
deviceGenLoadList(siggenInput.substr(0, siggenInput.find('\0')));
break;
case 1:
deviceGenLoadFormula(siggenInput.substr(0, siggenInput.find('\0')));
break;
case 2:
break;
}
ImGui::CloseCurrentPopup();
}
ImGui::SameLine();
if (ImGui::Button("Cancel")) {
siggenInput.clear();
ImGui::CloseCurrentPopup();
}
ImGui::EndPopup();
}
if (ImGui::BeginPopup("buffer")) {
static std::string bufferSizeInput ("4096");
ImGui::Text("Please enter a new sample buffer size (100-4096):");
ImGui::PushStyleColor(ImGuiCol_FrameBg, {.8, .8, .8, 1});
ImGui::InputText("##",
bufferSizeInput.data(),
bufferSizeInput.size(),
ImGuiInputTextFlags_CharsDecimal);
ImGui::PopStyleColor();
if (ImGui::Button("Save")) {
if (m_device) {
int n = std::clamp(std::stoi(bufferSizeInput), 100, 4096);
m_device->continuous_set_buffer_size(n);
}
ImGui::CloseCurrentPopup();
}
ImGui::SameLine();
if (ImGui::Button("Cancel"))
ImGui::CloseCurrentPopup();
ImGui::EndPopup();
}
if (ImGuiFileDialog::Instance()->Display("ChooseFileLog",
ImGuiWindowFlags_NoCollapse,
ImVec2(460, 540)))
{
if (ImGuiFileDialog::Instance()->IsOk()) {
const auto filePathName = ImGuiFileDialog::Instance()->GetFilePathName();
deviceLoadLogFile(filePathName);
} else {
logResults = false;
}
ImGuiFileDialog::Instance()->Close();
}
if (ImGuiFileDialog::Instance()->Display("ChooseFileGen",
ImGuiWindowFlags_NoCollapse,
ImVec2(460, 540)))
{
if (ImGuiFileDialog::Instance()->IsOk()) {
const auto filePathName = ImGuiFileDialog::Instance()->GetFilePathName();
deviceLoadAudioFile(filePathName);
}
ImGuiFileDialog::Instance()->Close();
}
}
void deviceRenderDraw()
{
static std::vector<stmdsp::dacsample_t> buffer;
static std::vector<stmdsp::dacsample_t> bufferInput;
static std::vector<kiss_fft_scalar> bufferFFTIn;
static std::vector<kiss_fft_cpx> bufferFFTOut;
static auto bufferCirc = CircularBuffer(buffer);
static auto bufferInputCirc = CircularBuffer(bufferInput);
static bool drawSamplesInput = false;
static kiss_fftr_cfg kisscfg;
if (drawSamples) {
static unsigned int yMinMax = 4095;
ImGui::Begin("draw", &drawSamples);
ImGui::Text("Draw input ");
ImGui::SameLine();
if (ImGui::Checkbox("##", &drawSamplesInput)) {
deviceSetInputDrawing(drawSamplesInput);
if (drawSamplesInput) {
bufferCirc.reset(2048);
bufferInputCirc.reset(2048);
}
}
ImGui::SameLine();
ImGui::Text("Time: %0.3f sec", drawSamplesTimeframe);
ImGui::SameLine();
if (ImGui::Button("-", {30, 0})) {
drawSamplesTimeframe = std::max(drawSamplesTimeframe / 2., 0.0078125);
deviceUpdateDrawBufferSize(drawSamplesTimeframe);
}
ImGui::SameLine();
if (ImGui::Button("+", {30, 0})) {
drawSamplesTimeframe = std::min(drawSamplesTimeframe * 2, 32.);
deviceUpdateDrawBufferSize(drawSamplesTimeframe);
}
ImGui::SameLine();
ImGui::Text("Y: +/-%1.2fV", 3.3f * (static_cast<float>(yMinMax) / 4095.f));
ImGui::SameLine();
if (ImGui::Button(" - ", {30, 0})) {
yMinMax = std::max(63u, yMinMax >> 1);
}
ImGui::SameLine();
if (ImGui::Button(" + ", {30, 0})) {
yMinMax = std::min(4095u, (yMinMax << 1) | 1);
}
auto newSize = pullFromDrawQueue(bufferCirc);
if (newSize > 0) {
buffer.resize(newSize);
bufferCirc = CircularBuffer(buffer);
pullFromDrawQueue(bufferCirc);
}
if (drawSamplesInput) {
auto newSize = pullFromInputDrawQueue(bufferInputCirc);
if (newSize > 0) {
bufferInput.resize(newSize);
bufferInputCirc = CircularBuffer(bufferInput);
pullFromInputDrawQueue(bufferInputCirc);
}
}
auto drawList = ImGui::GetWindowDrawList();
ImVec2 p0 = ImGui::GetWindowPos();
auto size = ImGui::GetWindowSize();
p0.y += 65;
size.y -= 70;
drawList->AddRectFilled(p0, {p0.x + size.x, p0.y + size.y}, IM_COL32_BLACK);
const auto lcMinor = ImGui::GetColorU32(IM_COL32(40, 40, 40, 255));
const auto lcMajor = ImGui::GetColorU32(IM_COL32(140, 140, 140, 255));
{
const float yinc = (3. / 3.3) * size.y / 12.f;
const float center = p0.y + size.y / 2;
drawList->AddLine({p0.x, center}, {p0.x + size.x, center}, ImGui::GetColorU32(IM_COL32_WHITE));
for (int i = 1; i < 7; ++i) {
drawList->AddLine({p0.x, center + i * yinc}, {p0.x + size.x, center + i * yinc}, (i % 2) ? lcMinor : lcMajor);
drawList->AddLine({p0.x, center - i * yinc}, {p0.x + size.x, center - i * yinc}, (i % 2) ? lcMinor : lcMajor);
}
}
{
const float xinc = size.x / 16.f;
const float center = p0.x + size.x / 2;
drawList->AddLine({center, p0.y}, {center, p0.y + size.y}, ImGui::GetColorU32(IM_COL32_WHITE));
for (int i = 1; i < 8; ++i) {
drawList->AddLine({center + i * xinc, p0.y}, {center + i * xinc, p0.y + size.y}, (i % 2) ? lcMinor : lcMajor);
drawList->AddLine({center - i * xinc, p0.y}, {center - i * xinc, p0.y + size.y}, (i % 2) ? lcMinor : lcMajor);
}
}
const float di = static_cast<float>(buffer.size()) / size.x;
const float dx = std::ceil(size.x / static_cast<float>(buffer.size()));
ImVec2 pp = p0;
float i = 0;
while (pp.x < p0.x + size.x) {
unsigned int idx = i;
float n = std::clamp((buffer[idx] - 2048.) / yMinMax, -0.5, 0.5);
i += di;
ImVec2 next (pp.x + dx, p0.y + size.y * (0.5 - n));
drawList->AddLine(pp, next, ImGui::GetColorU32(IM_COL32(255, 0, 0, 255)));
pp = next;
}
if (drawSamplesInput) {
ImVec2 pp = p0;
float i = 0;
while (pp.x < p0.x + size.x) {
unsigned int idx = i;
float n = std::clamp((bufferInput[idx] - 2048.) / yMinMax, -0.5, 0.5);
i += di;
ImVec2 next (pp.x + dx, p0.y + size.y * (0.5 - n));
drawList->AddLine(pp, next, ImGui::GetColorU32(IM_COL32(0, 0, 255, 255)));
pp = next;
}
}
const auto mouse = ImGui::GetMousePos();
if (mouse.x > p0.x && mouse.x < p0.x + size.x &&
mouse.y > p0.y && mouse.y < p0.y + size.y)
{
char buf[16];
drawList->AddLine({mouse.x, p0.y}, {mouse.x, p0.y + size.y}, IM_COL32(255, 255, 0, 255));
{
const std::size_t si = (mouse.x - p0.x) / size.x * buffer.size();
const float s = buffer[si] / 4095.f * 6.6f - 3.3f;
snprintf(buf, sizeof(buf), " %1.3fV", s);
drawList->AddText(mouse, IM_COL32(255, 0, 0, 255), buf);
}
if (drawSamplesInput) {
const std::size_t si = (mouse.x - p0.x) / size.x * bufferInput.size();
const float s = bufferInput[si] / 4095.f * 6.6f - 3.3f;
snprintf(buf, sizeof(buf), " %1.3fV", s);
drawList->AddText({mouse.x, mouse.y + 20}, IM_COL32(0, 0, 255, 255), buf);
}
}
ImGui::End();
} else if (drawFrequencies) {
ImGui::Begin("draw", &drawFrequencies);
ImGui::Text("Time: %0.3f sec", drawSamplesTimeframe);
ImGui::SameLine();
if (ImGui::Button("-", {30, 0})) {
drawSamplesTimeframe = std::max(drawSamplesTimeframe / 2., 0.0078125);
deviceUpdateDrawBufferSize(drawSamplesTimeframe);
}
ImGui::SameLine();
if (ImGui::Button("+", {30, 0})) {
drawSamplesTimeframe = std::min(drawSamplesTimeframe * 2, 32.);
deviceUpdateDrawBufferSize(drawSamplesTimeframe);
}
auto newSize = pullFromDrawQueue(bufferCirc);
if (newSize > 0) {
buffer.resize(newSize);
bufferFFTIn.resize(newSize);
bufferFFTOut.resize(newSize);
bufferCirc = CircularBuffer(buffer);
pullFromDrawQueue(bufferCirc);
kiss_fftr_free(kisscfg);
kisscfg = kiss_fftr_alloc(buffer.size(), false, nullptr, nullptr);
}
std::copy(buffer.begin(), buffer.end(), bufferFFTIn.begin());
kiss_fftr(kisscfg, bufferFFTIn.data(), bufferFFTOut.data());
auto drawList = ImGui::GetWindowDrawList();
ImVec2 p0 = ImGui::GetWindowPos();
auto size = ImGui::GetWindowSize();
p0.y += 65;
size.y -= 70;
drawList->AddRectFilled(p0, {p0.x + size.x, p0.y + size.y}, IM_COL32_BLACK);
const auto lcMinor = ImGui::GetColorU32(IM_COL32(40, 40, 40, 255));
const auto lcMajor = ImGui::GetColorU32(IM_COL32(140, 140, 140, 255));
{
const float yinc = size.y / 10.f;
for (int i = 1; i < 10; ++i) {
drawList->AddLine({p0.x, p0.y + i * yinc}, {p0.x + size.x, p0.y + i * yinc}, (i % 2) ? lcMinor : lcMajor);
}
}
{
const float xinc = size.x / 10.f;
for (int i = 1; i < 10; ++i) {
drawList->AddLine({p0.x + i * xinc, p0.y}, {p0.x + i * xinc, p0.y + size.y}, (i % 2) ? lcMinor : lcMajor);
}
}
const auto Fs = m_device->get_sample_rate();
const float di = static_cast<float>(buffer.size() / 2) / size.x;
const float dx = std::ceil(size.x / static_cast<float>(buffer.size()));
ImVec2 pp = p0;
float i = 0;
while (pp.x < p0.x + size.x) {
unsigned int idx = i;
float n = std::clamp(bufferFFTOut[idx].r / Fs / 4.f, 0.f, 1.f);
i += di;
ImVec2 next (pp.x + dx, p0.y + size.y * (1 - n));
drawList->AddLine(pp, next, ImGui::GetColorU32(IM_COL32(255, 0, 0, 255)), 2.f);
pp = next;
}
const auto mouse = ImGui::GetMousePos();
if (mouse.x > p0.x && mouse.x < p0.x + size.x &&
mouse.y > p0.y && mouse.y < p0.y + size.y)
{
char buf[16];
drawList->AddLine({mouse.x, p0.y}, {mouse.x, p0.y + size.y}, IM_COL32(255, 255, 0, 255));
const std::size_t si = (mouse.x - p0.x) / size.x * Fs / 2;
snprintf(buf, sizeof(buf), " %5luHz", si);
drawList->AddText(mouse, IM_COL32(255, 0, 0, 255), buf);
}
ImGui::End();
}
}
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