comments

config/audio.yaml

@@ -3,7 +3,7 @@
 # Configures properties for the RtAudio engine
 
 # Number of samples per second
-sampleRate: 44100 
+sampleRate: 96000 
 # unconfigurable: sampleFormat; [-1, 1] float
 
 # number of audio channels

config/keymap.yaml

@@ -0,0 +1,35 @@
+
+# keymap.yaml
+# Configures a computer keyboard mapping of keys to midi notes for when you don't have a midi device available
+# (there's probably tools available that are able to make your keyboard act as a midi device but this was easier)
+
+# so Qt key enum => midi note id
+#  { Qt::Key_Shift, 47 }, // B 2
+#  { Qt::Key_Z, 48 }, // C 3
+#  { Qt::Key_S, 49 }, // C#
+#  { Qt::Key_X, 50 }, // D
+#  { Qt::Key_D, 51 }, // D#
+#  { Qt::Key_C, 52 }, // E
+#  { Qt::Key_V, 53 }, // F
+#  { Qt::Key_G, 54 }, // F#
+#  { Qt::Key_B, 55 }, // G
+#  { Qt::Key_H, 56 }, // G#
+#  { Qt::Key_N, 57 }, // A
+#  { Qt::Key_J, 58 }, // A#
+#  { Qt::Key_M, 59 }, // B 3
+#  { Qt::Key_Q, 60 }, // C 4
+#  { Qt::Key_2, 61 }, // C#
+#  { Qt::Key_W, 62 }, // D
+#  { Qt::Key_3, 63 }, // D#
+#  { Qt::Key_E, 64 }, // E
+#  { Qt::Key_R, 65 }, // F
+#  { Qt::Key_5, 66 }, // F#
+#  { Qt::Key_T, 67 }, // G
+#  { Qt::Key_6, 68 }, // G#
+#  { Qt::Key_Y, 69 }, // A
+#  { Qt::Key_7, 70 }, // A#
+#  { Qt::Key_U, 71 }, // B 4
+#  { Qt::Key_I, 72 }, // C 5
+
+# so we'll also need a mapping of the key strings to the qt::Key enum values 
+# and then a mapping of note strings to midi ids

src/ParameterStore.h

@@ -69,8 +69,6 @@ struct ParamDefault {
     float max;
 };
 
-// TODO: make these configurable via yml file too
-// later TODO: and then when I have full on profile saving there will be a default profile to load from
 constexpr std::array<ParamDefault, static_cast<size_t>(ParamId::Count)> PARAM_DEFS {{
     { 100.0f,   20.0f,  600.0f},   // Osc1Freq
     {   2.0f,    0.0f,    0.0f},   // OscWaveSelector1

src/synth/AudioEngine.cpp

@@ -35,9 +35,17 @@ bool AudioEngine::start() {
     RtAudio::StreamOptions options;
     options.flags = RTAUDIO_MINIMIZE_LATENCY;
 
-    // TODO: error check this please
-    audio_.openStream(&params, nullptr, RTAUDIO_FLOAT32, sampleRate_, &bufferFrames_, &AudioEngine::audioCallback, this, &options);
-    audio_.startStream();
+    RtAudioErrorType status = audio_.openStream(&params, nullptr, RTAUDIO_FLOAT32, sampleRate_, &bufferFrames_, &AudioEngine::audioCallback, this, &options);
+    if(status != RTAUDIO_NO_ERROR) {
+        std::cout << "Error opening RtAudio stream" << std::endl;
+        return false;
+    } 
+    
+    status = audio_.startStream();
+    if(status != RTAUDIO_NO_ERROR) {
+        std::cout << "Error starting RtAudio stream" << std::endl;
+        return false;
+    } 
 
     // sanity check
     std::cout << "sample rate: " << sampleRate_ << "  buffer frames: " << bufferFrames_ << std::endl;

src/synth/AudioEngine.h

@@ -49,7 +49,8 @@ private:
     ScopeBuffer scope_ { 1024 }; // stores audio samples for visualization
 
     RtAudio audio_{AUDIO_API}; // audio device
-    // TODO: id like a yml config file or something for these
+
+    // Configurable in the audio.yaml file, assigned defaults if the file is not found
     uint32_t sampleRate_ = 44100;
     uint32_t bufferFrames_ = 512; // time per buffer = BF/SR (256/44100 = 5.8ms)
     uint32_t channels_ = 2; // stereo

src/synth/Voice.h

@@ -12,6 +12,7 @@
 
 // TODO: make configurable
 #define SYNTH_OSCILLATOR_COUNT 3
+// if there's different oscillator amounts then we need to be able to dynamically create the ui for each of them
 
 struct SmoothedParam {
     float current = 0.0f;
@@ -63,7 +64,6 @@ private:
     // filters
     Filter filter1_;
     Filter filter2_;
-    // TODO: I think the filter's state being uninitialized is what's causing popping when a voice starts for the first time
 
     // paramstore pointer
     SmoothedParam* params_;