From 1573a8c4cde1cd9528b422b2dcc598e37ffe94a7 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Thu, 2 May 2024 19:12:26 +1000
Subject: WIP merge cyclically dependent components into one big component

---
 src/tangara/audio/resample.cpp | 55 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 src/tangara/audio/resample.cpp

(limited to 'src/tangara/audio/resample.cpp')

diff --git a/src/tangara/audio/resample.cpp b/src/tangara/audio/resample.cpp
new file mode 100644
index 00000000..1e20392b
--- /dev/null
+++ b/src/tangara/audio/resample.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2023 jacqueline <me@jacqueline.id.au>
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+#include "resample.hpp"
+
+#include <algorithm>
+#include <cmath>
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <numeric>
+
+#include "esp_log.h"
+#include "speex/speex_resampler.h"
+
+#include "sample.hpp"
+
+namespace audio {
+
+static constexpr int kQuality = SPEEX_RESAMPLER_QUALITY_MIN;
+
+Resampler::Resampler(uint32_t source_sample_rate,
+                     uint32_t target_sample_rate,
+                     uint8_t num_channels)
+    : err_(0),
+      resampler_(speex_resampler_init(num_channels,
+                                      source_sample_rate,
+                                      target_sample_rate,
+                                      kQuality,
+                                      &err_)),
+      num_channels_(num_channels) {
+  assert(err_ == 0);
+}
+
+Resampler::~Resampler() {
+  speex_resampler_destroy(resampler_);
+}
+
+auto Resampler::Process(std::span<sample::Sample> input,
+                        std::span<sample::Sample> output,
+                        bool end_of_data) -> std::pair<size_t, size_t> {
+  uint32_t samples_used = input.size() / num_channels_;
+  uint32_t samples_produced = output.size() / num_channels_;
+
+  int err = speex_resampler_process_interleaved_int(
+      resampler_, input.data(), &samples_used, output.data(),
+      &samples_produced);
+  assert(err == 0);
+
+  return {samples_used * num_channels_, samples_produced * num_channels_};
+}
+
+}  // namespace audio
-- 
cgit v1.2.3


From 7d7f7755d17e1e0a2348d75d797097f166b70471 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Thu, 2 May 2024 21:41:56 +1000
Subject: start moving include files into subdirs

---
 src/tangara/audio/resample.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/tangara/audio/resample.cpp')

diff --git a/src/tangara/audio/resample.cpp b/src/tangara/audio/resample.cpp
index 1e20392b..143ce230 100644
--- a/src/tangara/audio/resample.cpp
+++ b/src/tangara/audio/resample.cpp
@@ -3,7 +3,7 @@
  *
  * SPDX-License-Identifier: GPL-3.0-only
  */
-#include "resample.hpp"
+#include "audio/resample.hpp"
 
 #include <algorithm>
 #include <cmath>
-- 
cgit v1.2.3