Move Diskstream ownership to Track, so that Session no longer holds lists of Diskstre...
[ardour.git] / libs / ardour / ardour / audio_diskstream.h
index 74c804e5bb87f42bd5fd97e4a0fa893b6744d457..6cf064a61d18e713c4fbecac860b01621015db5c 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000-2006 Paul Davis 
+    Copyright (C) 2000-2006 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -19,7 +19,6 @@
 #ifndef __ardour_audio_diskstream_h__
 #define __ardour_audio_diskstream_h__
 
-#include <sigc++/signal.h>
 
 #include <cmath>
 #include <string>
 
 #include <time.h>
 
-#include <pbd/fastlog.h>
-#include <pbd/ringbufferNPT.h>
-#include <pbd/stateful.h> 
+#include "pbd/fastlog.h"
+#include "pbd/ringbufferNPT.h"
+#include "pbd/stateful.h"
+#include "pbd/rcu.h"
 
-#include <ardour/ardour.h>
-#include <ardour/configuration.h>
-#include <ardour/session.h>
-#include <ardour/route_group.h>
-#include <ardour/route.h>
-#include <ardour/port.h>
-#include <ardour/utils.h>
-#include <ardour/diskstream.h>
-#include <ardour/audioplaylist.h>
+#include "ardour/ardour.h"
+#include "ardour/utils.h"
+#include "ardour/diskstream.h"
+#include "ardour/audioplaylist.h"
+#include "ardour/port.h"
+#include "ardour/interpolation.h"
 
 struct tm;
 
@@ -55,72 +52,80 @@ class AudioFileSource;
 class IO;
 
 class AudioDiskstream : public Diskstream
-{      
+{
   public:
-       AudioDiskstream (Session &, const string& name, Diskstream::Flag f = Recordable);
+       AudioDiskstream (Session &, const std::string& name, Diskstream::Flag f = Recordable);
        AudioDiskstream (Session &, const XMLNode&);
        ~AudioDiskstream();
 
        float playback_buffer_load() const;
        float capture_buffer_load() const;
 
-       string input_source (uint32_t n=0) const {
-               if (n < channels.size()) {
-                       return channels[n].source ? channels[n].source->name() : "";
+       std::string input_source (uint32_t n=0) const {
+               boost::shared_ptr<ChannelList> c = channels.reader();
+               if (n < c->size()) {
+                       return (*c)[n]->source ? (*c)[n]->source->name() : "";
                } else {
-                       return ""; 
+                       return "";
                }
        }
 
-       Port *input_source_port (uint32_t n=0) const { 
-               if (n < channels.size()) return channels[n].source; return 0; 
+       Port *input_source_port (uint32_t n=0) const {
+               boost::shared_ptr<ChannelList> c = channels.reader();
+               if (n < c->size()) return (*c)[n]->source; return 0;
        }
 
        void set_record_enabled (bool yn);
        int set_destructive (bool yn);
-
-       float peak_power(uint32_t n=0) { 
-               float x = channels[n].peak_power;
-               channels[n].peak_power = 0.0f;
+       int set_non_layered (bool yn);
+       bool can_become_destructive (bool& requires_bounce) const;
+
+       float peak_power(uint32_t n = 0) {
+               boost::shared_ptr<ChannelList> c = channels.reader();
+               ChannelInfo* chaninfo = (*c)[n];
+               float x = chaninfo->peak_power;
+               chaninfo->peak_power = 0.0f;
                if (x > 0.0f) {
                        return 20.0f * fast_log10(x);
                } else {
                        return minus_infinity();
                }
        }
-       
-       AudioPlaylist* audio_playlist () { return dynamic_cast<AudioPlaylist*>(_playlist); }
 
-       int use_playlist (Playlist *);
+       boost::shared_ptr<AudioPlaylist> audio_playlist () { return boost::dynamic_pointer_cast<AudioPlaylist>(_playlist); }
+
+       int use_playlist (boost::shared_ptr<Playlist>);
        int use_new_playlist ();
        int use_copy_playlist ();
 
-       Sample *playback_buffer (uint32_t n=0) {
-               if (n < channels.size())
-                       return channels[n].current_playback_buffer;
+       Sample *playback_buffer (uint32_t n = 0) {
+               boost::shared_ptr<ChannelList> c = channels.reader();
+               if (n < c->size())
+                       return (*c)[n]->current_playback_buffer;
                return 0;
        }
-       
-       Sample *capture_buffer (uint32_t n=0) {
-               if (n < channels.size())
-                       return channels[n].current_capture_buffer;
+
+       Sample *capture_buffer (uint32_t n = 0) {
+               boost::shared_ptr<ChannelList> c = channels.reader();
+               if (n < c->size())
+                       return (*c)[n]->current_capture_buffer;
                return 0;
        }
 
        boost::shared_ptr<AudioFileSource> write_source (uint32_t n=0) {
-               if (n < channels.size())
-                       return channels[n].write_source;
+               boost::shared_ptr<ChannelList> c = channels.reader();
+               if (n < c->size())
+                       return (*c)[n]->write_source;
                return boost::shared_ptr<AudioFileSource>();
        }
 
-       int add_channel ();
-       int remove_channel ();
-       
-       
+       int add_channel (uint32_t how_many);
+       int remove_channel (uint32_t how_many);
+
        /* stateful */
 
        XMLNode& get_state(void);
-       int      set_state(const XMLNode& node);
+       int      set_state(const XMLNode& node, int version);
 
        void monitor_input (bool);
 
@@ -140,6 +145,8 @@ class AudioDiskstream : public Diskstream
                }
        }
 
+       CubicInterpolation interpolation;
+
        XMLNode* deprecated_io_node;
 
   protected:
@@ -158,6 +165,7 @@ class AudioDiskstream : public Diskstream
        int  rename_write_sources ();
        void reset_write_sources (bool, bool force = false);
        void non_realtime_input_change ();
+       void non_realtime_locate (nframes_t location);
 
   protected:
        friend class Auditioner;
@@ -166,22 +174,26 @@ class AudioDiskstream : public Diskstream
   protected:
        friend class AudioTrack;
 
-       int  process (nframes_t transport_frame, nframes_t nframes, nframes_t offset, bool can_record, bool rec_monitors_input);
+       int  process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input, bool& need_butler);
        bool commit  (nframes_t nframes);
 
   private:
 
        struct ChannelInfo {
 
+               ChannelInfo (nframes_t buffer_size, nframes_t speed_buffer_size, nframes_t wrap_buffer_size);
+               ~ChannelInfo ();
+
                Sample     *playback_wrap_buffer;
                Sample     *capture_wrap_buffer;
                Sample     *speed_buffer;
 
                float       peak_power;
-           
-               boost::shared_ptr<AudioFileSource> fades_source;
-               boost::shared_ptr<AudioFileSource> write_source;
 
+               boost::shared_ptr<AudioFileSource> fades_source;
+               boost::shared_ptr<AudioFileSource> write_source;
+
+               /// the Port that our audio data comes from
                Port         *source;
                Sample       *current_capture_buffer;
                Sample       *current_playback_buffer;
@@ -201,34 +213,39 @@ class AudioDiskstream : public Diskstream
                nframes_t                     curr_capture_cnt;
        };
 
+       typedef std::vector<ChannelInfo*> ChannelList;
+
+       void process_varispeed_playback(nframes_t nframes, boost::shared_ptr<ChannelList> c);
+
        /* The two central butler operations */
-       int do_flush (Session::RunContext context, bool force = false);
+       int do_flush (RunContext context, bool force = false);
        int do_refill () { return _do_refill(_mixdown_buffer, _gain_buffer); }
-       
-       int do_refill_with_alloc();
+
+       int do_refill_with_alloc ();
 
        int read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer,
-               nframes_t& start, nframes_t cnt, 
-               ChannelInfo& channel_info, int channel, bool reversed);
+                       nframes_t& start, nframes_t cnt,
+                       ChannelInfo* channel_info, int channel, bool reversed);
 
-       void finish_capture (bool rec_monitors_input);
-       void transport_stopped (struct tm&, time_t, bool abort);
+       void finish_capture (bool rec_monitors_input, boost::shared_ptr<ChannelList>);
+       void transport_stopped_wallclock (struct tm&, time_t, bool abort);
+       void transport_looped (nframes_t transport_frame);
 
-       void init (Diskstream::Flag);
+       void init ();
 
        void init_channel (ChannelInfo &chan);
        void destroy_channel (ChannelInfo &chan);
-       
+
        int use_new_write_source (uint32_t n=0);
 
-       int find_and_use_playlist (const string&);
+       int find_and_use_playlist (const std::string &);
 
        void allocate_temporary_buffers ();
 
        int use_pending_capture_data (XMLNode& node);
 
        void get_input_sources ();
-       void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record);
+       void prepare_record_status(nframes_t capture_start_frame);
        void set_align_style_from_io();
        void setup_destructive_playlist ();
        void use_destructive_playlist ();
@@ -244,16 +261,17 @@ class AudioDiskstream : public Diskstream
        static Sample* _mixdown_buffer;
        static gain_t* _gain_buffer;
 
-       // Uh, /really/ private? (there should probably be less friends of Diskstream)
-       int _do_refill (Sample *mixdown_buffer, float *gain_buffer);
-       
-       
        std::vector<boost::shared_ptr<AudioFileSource> > capturing_sources;
-       
-       typedef vector<ChannelInfo> ChannelList;
-       ChannelList channels;
 
-       bool can_become_destructive () const;
+       SerializedRCUManager<ChannelList> channels;
+
+ /* really */
+  private:
+       int _do_refill (Sample *mixdown_buffer, float *gain_buffer);
+
+       int add_channel_to (boost::shared_ptr<ChannelList>, uint32_t how_many);
+       int remove_channel_from (boost::shared_ptr<ChannelList>, uint32_t how_many);
+
 };
 
 } // namespace ARDOUR