Add support for callback API to portaudio backend but keep blocking API as default

[ardour.git] / libs / backends / portaudio / portaudio_backend.h

diff --git a/libs/backends/portaudio/portaudio_backend.h b/libs/backends/portaudio/portaudio_backend.h
index 15f32befc28dc25f91119cb0d77d3fb5d869fa11..0433f120ee7b4623e1d4df1b01e83b2ac74545f3 100644 (file)
--- a/libs/backends/portaudio/portaudio_backend.h
+++ b/libs/backends/portaudio/portaudio_backend.h
@@ -30,12 +30,12 @@
 #include <boost/shared_ptr.hpp>
 
 #include "ardour/audio_backend.h"
+#include "ardour/dsp_load_calculator.h"
 #include "ardour/types.h"
 
 #include "portaudio_io.h"
 #include "winmmemidi_io.h"
 #include "cycle_timer.h"
-#include "dsp_load_calculator.h"
 
 namespace ARDOUR {
 
@@ -320,13 +320,40 @@ class PortAudioBackend : public AudioBackend {
 
                void* main_blocking_process_thread ();
 
+               void* freewheel_process_thread ();
+
        private: // Methods
                bool start_blocking_process_thread ();
                bool stop_blocking_process_thread ();
                bool blocking_process_freewheel ();
-               bool blocking_process_main ();
+               bool blocking_process_main (const float* interleaved_input_data,
+                                           float* interleaved_output_data);
 
                void process_port_connection_changes ();
+               void process_incoming_midi ();
+               void process_outgoing_midi ();
+
+               bool engine_halted ();
+               bool running ();
+
+               static int portaudio_callback(const void* input,
+                                         void* output,
+                                         unsigned long frameCount,
+                                         const PaStreamCallbackTimeInfo* timeInfo,
+                                         PaStreamCallbackFlags statusFlags,
+                                         void* userData);
+
+               bool process_callback(const float* input,
+                                 float* output,
+                                 uint32_t frame_count,
+                                 const PaStreamCallbackTimeInfo* timeInfo,
+                                 PaStreamCallbackFlags statusFlags);
+
+               bool start_freewheel_process_thread ();
+               bool stop_freewheel_process_thread ();
+
+               static bool set_mmcss_pro_audio (HANDLE* task_handle);
+               static bool reset_mmcss (HANDLE task_handle);
 
        private:
                std::string _instance_name;
@@ -337,9 +364,16 @@ class PortAudioBackend : public AudioBackend {
                bool  _active; /* is running, process thread */
                bool  _freewheel;
                bool  _freewheeling;
+               bool  _freewheel_ack;
+               bool  _reinit_thread_callback;
                bool  _measure_latency;
 
-               DSPLoadCalculator m_dsp_calc;
+               ARDOUR::DSPLoadCalculator m_dsp_calc;
+
+               bool m_freewheel_thread_active;
+
+               pthread_mutex_t m_freewheel_mutex;
+               pthread_cond_t m_freewheel_signal;
 
                uint64_t m_cycle_count;
                uint64_t m_total_deviation_us;
@@ -378,6 +412,12 @@ class PortAudioBackend : public AudioBackend {
                /* blocking thread */
                pthread_t _main_blocking_thread;
 
+               /* main thread in callback mode(or fw thread when running) */
+               pthread_t m_main_thread;
+
+               /* freewheel thread in callback mode */
+               pthread_t m_pthread_freewheel;
+
                /* process threads */
                static void* portaudio_process_thread (void *);
                std::vector<pthread_t> _threads;