From c7bed1320e7fb4c72aec6d37ce9a20522d0ede15 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Sat, 26 Jun 2021 11:04:03 -0600
Subject: [PATCH] adding DSP stats to coreaudio backend (uncompiled)

---
 libs/backends/coreaudio/coreaudio_backend.cc | 3 ++-
 libs/backends/coreaudio/coreaudio_pcmio.cc   | 9 ++++++---
 libs/backends/coreaudio/coreaudio_pcmio.h    | 9 ++++++++-
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/libs/backends/coreaudio/coreaudio_backend.cc b/libs/backends/coreaudio/coreaudio_backend.cc
index e95220f1dd..9e9a119cdd 100644
--- a/libs/backends/coreaudio/coreaudio_backend.cc
+++ b/libs/backends/coreaudio/coreaudio_backend.cc
@@ -548,7 +548,7 @@ CoreAudioBackend::_start (bool for_latency_measurement)
 	_pcmio->set_buffer_size_callback (buffer_size_callback_ptr, this);
 	_pcmio->set_sample_rate_callback (sample_rate_callback_ptr, this);
 
-	_pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this);
+	_pcmio->pcm_start (device1, device2, _samplerate, _samples_per_period, process_callback_ptr, this, dsp_stats[AudioBackend::DeviceWait]);
 #ifndef NDEBUG
 	printf("STATE: %d\n", _pcmio->state ());
 #endif
@@ -1366,6 +1366,7 @@ CoreAudioBackend::process_callback (const uint32_t n_samples, const uint64_t hos
 {
 	uint32_t i = 0;
 	uint64_t clock1;
+	PBD::TimerRAII tr (dsp_stats[RunLoop]);
 
 	_active_ca = true;
 
diff --git a/libs/backends/coreaudio/coreaudio_pcmio.cc b/libs/backends/coreaudio/coreaudio_pcmio.cc
index ca0a57de43..3690d04d9a 100644
--- a/libs/backends/coreaudio/coreaudio_pcmio.cc
+++ b/libs/backends/coreaudio/coreaudio_pcmio.cc
@@ -792,9 +792,10 @@ CoreAudioPCM::set_samples_per_period (uint32_t n_samples)
 
 int
 CoreAudioPCM::pcm_start (
-		uint32_t device_id_in, uint32_t device_id_out,
-		uint32_t sample_rate, uint32_t samples_per_period,
-		int (process_callback (void*, const uint32_t, const uint64_t)), void *process_arg)
+	uint32_t device_id_in, uint32_t device_id_out,
+	uint32_t sample_rate, uint32_t samples_per_period,
+	int (process_callback (void*, const uint32_t, const uint64_t)), void *process_arg,
+	PBD::Timing& dsp_timer)
 {
 
 	assert(_device_ids);
@@ -812,6 +813,7 @@ CoreAudioPCM::pcm_start (
 	_process_arg = process_arg;
 	_samples_per_period = samples_per_period;
 	_cur_samples_per_period = 0;
+	_dsp_timer = &dsp_timer;
 	_active_device_id = 0;
 	_capture_channels = 0;
 	_playback_channels = 0;
@@ -1119,6 +1121,7 @@ CoreAudioPCM::render_callback (
 		UInt32 inNumberSamples,
 		AudioBufferList* ioData)
 {
+	PBD::WaitTimerRAII tr (*_dsp_timer);
 	OSStatus retVal = kAudioHardwareNoError;
 
 	if (_samples_per_period < inNumberSamples) {
diff --git a/libs/backends/coreaudio/coreaudio_pcmio.h b/libs/backends/coreaudio/coreaudio_pcmio.h
index 84381c8e60..694f26c556 100644
--- a/libs/backends/coreaudio/coreaudio_pcmio.h
+++ b/libs/backends/coreaudio/coreaudio_pcmio.h
@@ -36,6 +36,10 @@
 #define AUHAL_INPUT_ELEMENT 1
 
 
+namespace PBD {
+class Timing;
+}
+
 namespace ARDOUR {
 
 class CoreAudioPCM {
@@ -78,7 +82,8 @@ public:
 			uint32_t samples_per_period,
 			int (process_callback (void*, const uint32_t, const uint64_t)),
 			void * process_arg
-			);
+			PBD::Timing& dsp_timer,
+		);
 
 	void     set_error_callback (
 			void ( error_callback (void*)),
@@ -174,6 +179,8 @@ private:
 	int (* _process_callback) (void*, const uint32_t, const uint64_t);
 	void * _process_arg;
 
+	PBD::Timing* _dsp_timer;
+
 	void (* _error_callback) (void*);
 	void  * _error_arg;