From ff811ba810eadbed447acdbf6d5291164d75cd9d Mon Sep 17 00:00:00 2001
From: Be <be.0@gmx.com>
Date: Mon, 14 Apr 2025 02:27:40 -0500
Subject: move SampleProcessor buffers to external RAM

This increases CPU usage by ~2% for the audio_conv task, which I
think is an acceptable tradeoff. The Speex resampler still
makes its own allocations in internal RAM.
---
 src/tangara/audio/processor.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/tangara/audio')

diff --git a/src/tangara/audio/processor.cpp b/src/tangara/audio/processor.cpp
index 2fa7f78e..3126f050 100644
--- a/src/tangara/audio/processor.cpp
+++ b/src/tangara/audio/processor.cpp
@@ -52,7 +52,7 @@ SampleProcessor::SampleProcessor(drivers::PcmBuffer& sink)
     : commands_(xQueueCreate(2, sizeof(Args))),
       source_(xStreamBufferCreateWithCaps(kSourceBufferLength + 1,
                                           sizeof(sample::Sample),
-                                          MALLOC_CAP_DMA)),
+                                          MALLOC_CAP_SPIRAM)),
       sink_(sink),
       unprocessed_samples_(0) {
   tasks::StartPersistent<tasks::Type::kAudioConverter>([&]() { Main(); });
@@ -354,7 +354,7 @@ Buffer::Buffer()
     : storage_(reinterpret_cast<sample::Sample*>(
           heap_caps_calloc(kSampleBufferLength,
                            sizeof(sample::Sample),
-                           MALLOC_CAP_DMA))),
+                           MALLOC_CAP_SPIRAM))),
       buffer_(storage_, kSampleBufferLength),
       samples_in_buffer_() {}
 
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