libs/ardour/ardour/process_thread.h

   1 #ifndef __libardour_process_thread__
   2 #define __libardour_process_thread__
   3
   4 #include <glibmm/threads.h>
   5
   6 #include "ardour/chan_count.h"
   7 #include "ardour/types.h"
   8
   9 namespace ARDOUR {
  10
  11 class ThreadBuffers;
  12 class BufferSet;
  13
  14 class ProcessThread
  15 {
  16 public:
  17         ProcessThread ();
  18         ~ProcessThread ();
  19
  20         static void init();
  21
  22         void get_buffers ();
  23         void drop_buffers ();
  24
  25         /* these MUST be called by a process thread's thread, nothing else
  26          */
  27
  28         static BufferSet& get_silent_buffers (ChanCount count = ChanCount::ZERO);
  29         static BufferSet& get_scratch_buffers (ChanCount count = ChanCount::ZERO);
  30         static BufferSet& get_mix_buffers (ChanCount count = ChanCount::ZERO);
  31         static gain_t* gain_automation_buffer ();
  32         static gain_t* send_gain_automation_buffer ();
  33         static pan_t** pan_automation_buffer ();
  34
  35 protected:
  36         void session_going_away ();
  37
  38 private:
  39     static Glib::Threads::Private<ThreadBuffers> _private_thread_buffers;
  40 };
  41
  42 } // namespace
  43
  44 #endif /* __libardour_process_thread__ */