From 01be69eca1fa89c047fc29f5cb0ea8ba0898dad1 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Wed, 7 Dec 2022 15:36:47 +1100
Subject: better handling of chunk buffer

---
 src/audio/include/i2s_audio_output.hpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/audio/include/i2s_audio_output.hpp')

diff --git a/src/audio/include/i2s_audio_output.hpp b/src/audio/include/i2s_audio_output.hpp
index 4b4a458d..9e59f8fd 100644
--- a/src/audio/include/i2s_audio_output.hpp
+++ b/src/audio/include/i2s_audio_output.hpp
@@ -16,13 +16,17 @@ class I2SAudioOutput : public IAudioElement {
  public:
   enum Error { DAC_CONFIG, I2S_CONFIG, STREAM_INIT };
   static auto create(drivers::GpioExpander* expander)
-      -> cpp::result<std::unique_ptr<I2SAudioOutput>, Error>;
+      -> cpp::result<std::shared_ptr<I2SAudioOutput>, Error>;
 
   I2SAudioOutput(drivers::GpioExpander* expander,
                  std::unique_ptr<drivers::AudioDac> dac);
   ~I2SAudioOutput();
 
-  auto SetInputBuffer(MessageBufferHandle_t* in) -> void { input_buffer_ = in; }
+  auto InputMinChunkSize() const -> std::size_t override {
+    // TODO(jacqueline): work out a good value here. Maybe similar to the total
+    // DMA buffer size?
+    return 128;
+  }
 
   auto IdleTimeout() const -> TickType_t override;
   auto ProcessStreamInfo(const StreamInfo& info)
-- 
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