[audio_http] Add persistent ring buffer option (#18708)

Co-authored-by: n-IA-hane <n-IA-hane@users.noreply.github.com>

esphome/components/audio_http/audio_http_media_source.cpp

@@ -30,8 +30,9 @@ void AudioHTTPMediaSource::dump_config() {
   ESP_LOGCONFIG(TAG,
                 "Audio HTTP Media Source:\n"
                 "  Buffer Size: %zu bytes\n"
+                "  Persistent Ring Buffer: %s\n"
                 "  Decoder Task Stack in PSRAM: %s",
-                this->buffer_size_, YESNO(this->decoder_task_stack_in_psram_));
+                this->buffer_size_, YESNO(this->persistent_ring_buffer_), YESNO(this->decoder_task_stack_in_psram_));
 }
 
 void AudioHTTPMediaSource::setup() {
@@ -39,6 +40,7 @@ void AudioHTTPMediaSource::setup() {
 
   micro_decoder::DecoderConfig config;
   config.ring_buffer_size = this->buffer_size_;
+  config.persistent_ring_buffer = this->persistent_ring_buffer_;
   // Keep the transfer buffer smaller than the ring buffer so the reader can top up the ring
   // while the decoder is still draining it, instead of oscillating between empty and full.
   config.transfer_buffer_size = std::min(DEFAULT_TRANSFER_BUFFER_SIZE, this->buffer_size_ / 2);

esphome/components/audio_http/audio_http_media_source.h

@@ -33,6 +33,7 @@ class AudioHTTPMediaSource final : public Component,
 
   void set_buffer_size(size_t buffer_size) { this->buffer_size_ = buffer_size; }
   void set_task_stack_in_psram(bool task_stack_in_psram) { this->decoder_task_stack_in_psram_ = task_stack_in_psram; }
+  void set_persistent_ring_buffer(bool persistent) { this->persistent_ring_buffer_ = persistent; }
 
   // MediaSource interface implementation
   bool play_uri(const std::string &uri) override;
@@ -54,6 +55,7 @@ class AudioHTTPMediaSource final : public Component,
   // on_audio_write(). Must be atomic to avoid a data race.
   std::atomic<bool> pause_{false};
   bool decoder_task_stack_in_psram_{false};
+  bool persistent_ring_buffer_{false};
 };
 
 }  // namespace esphome::audio_http

esphome/components/audio_http/media_source.py

@@ -7,6 +7,8 @@ from esphome.types import ConfigType
 CODEOWNERS = ["@kahrendt"]
 AUTO_LOAD = ["audio"]
 
+CONF_PERSISTENT_RING_BUFFER = "persistent_ring_buffer"
+
 audio_http_ns = cg.esphome_ns.namespace("audio_http")
 AudioHTTPMediaSource = audio_http_ns.class_(
     "AudioHTTPMediaSource", cg.Component, media_source.MediaSource
@@ -28,6 +30,7 @@ CONFIG_SCHEMA = cv.All(
                 min=5000, max=1000000
             ),
             cv.Optional(CONF_TASK_STACK_IN_PSRAM): psram.validate_task_stack_in_psram,
+            cv.Optional(CONF_PERSISTENT_RING_BUFFER, default=False): cv.boolean,
         }
     )
     .extend(cv.COMPONENT_SCHEMA),
@@ -45,3 +48,4 @@ async def to_code(config: ConfigType) -> None:
         cg.add(var.set_task_stack_in_psram(True))
         psram.request_external_task_stack()
     cg.add(var.set_buffer_size(config[CONF_BUFFER_SIZE]))
+    cg.add(var.set_persistent_ring_buffer(config[CONF_PERSISTENT_RING_BUFFER]))

tests/components/audio_http/common.yaml

@@ -4,4 +4,5 @@ media_source:
   - platform: audio_http
     id: audio_http_source
     buffer_size: 100000
+    persistent_ring_buffer: true
     task_stack_in_psram: true