From a9531c86a433c8b7ae1f77ff0266c27c39eca7f4 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Fri, 10 Mar 2023 11:28:33 +1100
Subject: mostly single task pipeline

---
 src/drivers/dac.cpp         | 3 ++-
 src/drivers/include/dac.hpp | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/drivers')

diff --git a/src/drivers/dac.cpp b/src/drivers/dac.cpp
index c9af0d99..4d3aca1d 100644
--- a/src/drivers/dac.cpp
+++ b/src/drivers/dac.cpp
@@ -192,7 +192,8 @@ auto AudioDac::Reconfigure(BitsPerSample bps, SampleRate rate) -> void {
   WriteRegister(Register::POWER_MODE, 0);
 }
 
-auto AudioDac::WriteData(cpp::span<std::byte> data) -> std::size_t {
+auto AudioDac::WriteData(const cpp::span<const std::byte>& data)
+    -> std::size_t {
   std::size_t bytes_written = 0;
   esp_err_t err = i2s_channel_write(i2s_handle_, data.data(), data.size_bytes(),
                                     &bytes_written, 0);
diff --git a/src/drivers/include/dac.hpp b/src/drivers/include/dac.hpp
index 06808a78..028d46cb 100644
--- a/src/drivers/include/dac.hpp
+++ b/src/drivers/include/dac.hpp
@@ -71,7 +71,7 @@ class AudioDac {
   // TODO(jacqueline): worth supporting channels here as well?
   auto Reconfigure(BitsPerSample bps, SampleRate rate) -> void;
 
-  auto WriteData(cpp::span<std::byte> data) -> std::size_t;
+  auto WriteData(const cpp::span<const std::byte>& data) -> std::size_t;
 
   auto Stop() -> void;
   auto LogStatus() -> void;
-- 
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