and3rson · and3rson · Apr 16, 2024 · Apr 16, 2024 · Apr 16, 2024 · Apr 16, 2024
diff --git a/firmware/keira/src/apps/launcher.cpp b/firmware/keira/src/apps/launcher.cpp
@@ -150,7 +150,7 @@ const menu_icon_t* get_file_icon(const String& filename) {
         return &lua_img;
     } else if (lowerCasedFileName.endsWith(".js")) {
         return &js_img;
-    } else if (lowerCasedFileName.endsWith(".mod")) {
+    } else if (lowerCasedFileName.endsWith(".mod") || lowerCasedFileName.endsWith(".lt")) {
         return &music;
     } else {
         return &normalfile_img;
@@ -168,7 +168,7 @@ const uint16_t get_file_color(const String& filename) {
         return lilka::colors::Maya_blue;
     } else if (lowerCasedFileName.endsWith(".js")) {
         return lilka::colors::Butterscotch;
-    } else if (lowerCasedFileName.endsWith(".mod")) {
+    } else if (lowerCasedFileName.endsWith(".mod") || lowerCasedFileName.endsWith(".lt")) {
         return lilka::colors::Pink_lace;
     } else {
         return lilka::colors::Light_gray;

diff --git a/firmware/keira/src/apps/liltracker/i2s_sink.cpp b/firmware/keira/src/apps/liltracker/i2s_sink.cpp
@@ -0,0 +1,57 @@
+#include <lilka.h>
+#include "synth.h"
+
+#include "i2s_sink.h"
+
+I2SSink::I2SSink() {
+    constexpr uint8_t pinCount = 3;
+    uint8_t pins[pinCount] = {LILKA_I2S_BCLK, LILKA_I2S_LRCK, LILKA_I2S_DOUT};
+    uint8_t funcs[pinCount] = {I2S0O_BCK_OUT_IDX, I2S0O_WS_OUT_IDX, I2S0O_SD_OUT_IDX};
+    for (int i = 0; i < pinCount; i++) {
+        gpio_pad_select_gpio(pins[i]);
+        gpio_set_direction((gpio_num_t)pins[i], GPIO_MODE_OUTPUT);
+        gpio_matrix_out(pins[i], funcs[i], false, false);
+    }
+
+    esp_i2s::i2s_config_t cfg = {
+        .mode = (esp_i2s::i2s_mode_t)(esp_i2s::I2S_MODE_MASTER | esp_i2s::I2S_MODE_TX),
+        .sample_rate = SYNTH_SAMPLE_RATE,
+        .bits_per_sample = esp_i2s::I2S_BITS_PER_SAMPLE_16BIT,
+        .channel_format = esp_i2s::I2S_CHANNEL_FMT_ONLY_LEFT,
+        .communication_format =
+            (esp_i2s::i2s_comm_format_t)(esp_i2s::I2S_COMM_FORMAT_STAND_I2S | esp_i2s::I2S_COMM_FORMAT_STAND_MSB),
+        .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
+        .dma_buf_count = 4,
+        .dma_buf_len = SYNTH_BUFFER_SIZE,
+        .use_apll = false,
+        .tx_desc_auto_clear = true,
+    };
+    if (esp_i2s::i2s_driver_install(esp_i2s::I2S_NUM_0, &cfg, 0, NULL) != ESP_OK) {
+        lilka::serial_err("Failed to install I2S driver");
+        return;
+    }
+    if (esp_i2s::i2s_zero_dma_buffer(esp_i2s::I2S_NUM_0) != ESP_OK) {
+        lilka::serial_err("Failed to zero I2S DMA buffer");
+        return;
+    }
+}
+
+I2SSink::~I2SSink() {
+    // Deinit I2S (free DMA buffers & uninstall driver)
+    // TODO: Seems like this does not free the DMA buffers and causes a memory leak!
+    if (esp_i2s::i2s_driver_uninstall(esp_i2s::I2S_NUM_0) != ESP_OK) {
+        lilka::serial_err("Failed to uninstall I2S driver");
+    }
+}
+
+void I2SSink::start() {
+}
+
+size_t I2SSink::write(const int16_t* data, size_t size) {
+    size_t bytesWritten = 0;
+    esp_i2s::i2s_write(esp_i2s::I2S_NUM_0, data, size * sizeof(int16_t), &bytesWritten, portMAX_DELAY);
+    return bytesWritten / sizeof(int16_t);
+}
+
+void I2SSink::stop() {
+}
diff --git a/firmware/keira/src/apps/liltracker/i2s_sink.h b/firmware/keira/src/apps/liltracker/i2s_sink.h
@@ -0,0 +1,10 @@
+#include "sink.h"
+
+class I2SSink : public Sink {
+public:
+    I2SSink();
+    ~I2SSink();
+    void start() override;
+    size_t write(const int16_t* data, size_t size) override;
+    void stop() override;
+};
diff --git a/firmware/keira/src/apps/liltracker/liltracker.cpp b/firmware/keira/src/apps/liltracker/liltracker.cpp
diff --git a/firmware/keira/src/apps/liltracker/liltracker.h b/firmware/keira/src/apps/liltracker/liltracker.h
@@ -9,17 +9,16 @@ class LilTrackerApp : public App {
     explicit LilTrackerApp(String path);
 
 private:
-    Mixer mixer;
     Sequencer sequencer;
     void run() override;
     int drawElement(
         const char* text, int16_t x, int16_t y, lilka::Alignment hAlign, lilka::Alignment vAlign, bool editing,
         bool focused, uint16_t color
     );
-    void startPreview(Track* track, page_t* page, int8_t requestedChannelIndex, uint16_t requestedEventIndex);
+    // void startPreview(Track* track, page_t* page, int8_t requestedChannelIndex, uint16_t requestedEventIndex);
     void alert(String title, String message);
     bool confirm(String title, String message);
-    String filePicker(bool isSave);
+    String filePicker(String ext, bool isSave);
     void loadTrack(Track* track, String path);
     void saveTrack(Track* track, String path);