[speaker, i2s_audio] I2S Speaker implementation using a ring buffer (#7605)

esphome/components/audio/__init__.py

@@ -0,0 +1,9 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+
+CODEOWNERS = ["@kahrendt"]
+audio_ns = cg.esphome_ns.namespace("audio")
+
+CONFIG_SCHEMA = cv.All(
+    cv.Schema({}),
+)

esphome/components/audio/audio.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <cstdint>
+#include <stddef.h>
+
+namespace esphome {
+namespace audio {
+
+struct AudioStreamInfo {
+  bool operator==(const AudioStreamInfo &rhs) const {
+    return (channels == rhs.channels) && (bits_per_sample == rhs.bits_per_sample) && (sample_rate == rhs.sample_rate);
+  }
+  bool operator!=(const AudioStreamInfo &rhs) const { return !operator==(rhs); }
+  size_t get_bytes_per_sample() const { return bits_per_sample / 8; }
+  uint8_t channels = 1;
+  uint8_t bits_per_sample = 16;
+  uint32_t sample_rate = 16000;
+};
+
+}  // namespace audio
+}  // namespace esphome