From 3f45761b4f002249691a1a9a7a5bf8e8a01add78 Mon Sep 17 00:00:00 2001
From: Paul Adenot <paul@paul.cx>
Date: Tue, 18 Apr 2023 17:27:25 +0200
Subject: Add a way to know if the data callback is running

---
 src/cubeb_aaudio.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src')

diff --git a/src/cubeb_aaudio.cpp b/src/cubeb_aaudio.cpp
index 1c98ed3..80bd4ac 100644
--- a/src/cubeb_aaudio.cpp
+++ b/src/cubeb_aaudio.cpp
@@ -135,6 +135,7 @@ struct cubeb_stream {
   std::atomic<bool> in_use{false};
   std::atomic<bool> latency_metrics_available{false};
   std::atomic<stream_state> state{stream_state::INIT};
+  std::atomic<bool> in_data_callback{false};
   triple_buffer<AAudioTimingInfo> timing_info;
 
   AAudioStream * ostream{};
@@ -180,6 +181,15 @@ struct cubeb {
   struct cubeb_stream streams[MAX_STREAMS];
 };
 
+struct AutoInCallback {
+  AutoInCallback(cubeb_stream * stm) : stm(stm)
+  {
+    stm->in_data_callback.store(true);
+  }
+  ~AutoInCallback() { stm->in_data_callback.store(false); }
+  cubeb_stream * stm;
+};
+
 // Only allowed from state thread, while mutex on stm is locked
 static void
 shutdown_with_error(cubeb_stream * stm)
@@ -612,6 +622,7 @@ aaudio_duplex_data_cb(AAudioStream * astream, void * user_data,
                       void * audio_data, int32_t num_frames)
 {
   cubeb_stream * stm = (cubeb_stream *)user_data;
+  AutoInCallback aic(stm);
   assert(stm->ostream == astream);
   assert(stm->istream);
   assert(num_frames >= 0);
@@ -693,6 +704,7 @@ aaudio_output_data_cb(AAudioStream * astream, void * user_data,
                       void * audio_data, int32_t num_frames)
 {
   cubeb_stream * stm = (cubeb_stream *)user_data;
+  AutoInCallback aic(stm);
   assert(stm->ostream == astream);
   assert(!stm->istream);
   assert(num_frames >= 0);
@@ -741,6 +753,7 @@ aaudio_input_data_cb(AAudioStream * astream, void * user_data,
                      void * audio_data, int32_t num_frames)
 {
   cubeb_stream * stm = (cubeb_stream *)user_data;
+  AutoInCallback aic(stm);
   assert(stm->istream == astream);
   assert(!stm->ostream);
   assert(num_frames >= 0);
-- 
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