move to new cspot

components/spotify/cspot/bell/main/audio-sinks/esp/BufferedAudioSink.cpp

@@ -0,0 +1,47 @@
+#include "BufferedAudioSink.h"
+
+#include "driver/i2s.h"
+#include "freertos/task.h"
+#include "freertos/ringbuf.h"
+
+RingbufHandle_t dataBuffer;
+
+static void i2sFeed(void *pvParameters)
+{
+    while (true)
+    {
+        size_t itemSize;
+        char *item = (char *)xRingbufferReceiveUpTo(dataBuffer, &itemSize, portMAX_DELAY, 512);
+        if (item != NULL)
+        {
+            size_t written = 0;
+            while (written < itemSize)
+            {
+                i2s_write((i2s_port_t)0, item, itemSize, &written, portMAX_DELAY);
+            }
+            vRingbufferReturnItem(dataBuffer, (void *)item);
+        }
+    }
+}
+
+void BufferedAudioSink::startI2sFeed(size_t buf_size)
+{
+    dataBuffer = xRingbufferCreate(buf_size, RINGBUF_TYPE_BYTEBUF);
+    xTaskCreatePinnedToCore(&i2sFeed, "i2sFeed", 4096, NULL, 10, NULL, tskNO_AFFINITY);
+}
+
+void BufferedAudioSink::feedPCMFrames(const uint8_t *buffer, size_t bytes)
+{
+    feedPCMFramesInternal(buffer, bytes);
+}
+
+void BufferedAudioSink::feedPCMFramesInternal(const void *pvItem, size_t xItemSize)
+{
+    xRingbufferSend(dataBuffer, pvItem, xItemSize, portMAX_DELAY);
+}
+
+bool BufferedAudioSink::setParams(uint32_t sampleRate, uint8_t channelCount, uint8_t bitDepth)  {
+	// TODO override this for sinks with custom mclk
+	i2s_set_clk((i2s_port_t)0, sampleRate, (i2s_bits_per_sample_t)bitDepth, (i2s_channel_t)channelCount);
+	return true;
+}