#ifndef __ardour_export_channel_h__
#define __ardour_export_channel_h__
-#include <ardour/audioregion.h>
-#include <ardour/buffer_set.h>
-
#include <set>
+#include <boost/signals2.hpp>
#include <boost/shared_ptr.hpp>
-#include <sigc++/signal.h>
+#include <boost/scoped_array.hpp>
+#include <boost/operators.hpp>
+
+#include "pbd/signals.h"
+
+#include "ardour/buffer_set.h"
namespace ARDOUR {
class Session;
class AudioTrack;
class AudioPort;
+class AudioRegion;
/// Export channel base class interface for different source types
-class ExportChannel
+class ExportChannel : public boost::less_than_comparable<ExportChannel>
{
public:
virtual ~ExportChannel () {}
- virtual void read (Sample * data, nframes_t frames) const = 0;
+ virtual void set_max_buffer_size(framecnt_t frames) { }
+
+ virtual void read (Sample *& data, framecnt_t frames) const = 0;
virtual bool empty () const = 0;
-
+
/// Adds state to node passed
virtual void get_state (XMLNode * node) const = 0;
-
+
/// Sets state from node passed
virtual void set_state (XMLNode * node, Session & session) = 0;
-
+
// Operator< must be defined for usage in e.g. std::map or std::set to disallow duplicates when necessary
virtual bool operator< (ExportChannel const & other) const = 0;
};
/// Safe pointer for storing ExportChannels in ordered STL containers
class ExportChannelPtr : public boost::shared_ptr<ExportChannel>
+ , public boost::less_than_comparable<ExportChannel>
{
public:
ExportChannelPtr () {}
public:
typedef std::set<AudioPort *> PortSet;
- PortExportChannel () {}
-
- void read (Sample * data, nframes_t frames) const;
+ PortExportChannel ();
+ void set_max_buffer_size(framecnt_t frames);
+
+ void read (Sample *& data, framecnt_t frames) const;
bool empty () const { return ports.empty(); }
-
+
void get_state (XMLNode * node) const;
void set_state (XMLNode * node, Session & session);
-
+
bool operator< (ExportChannel const & other) const;
void add_port (AudioPort * port) { ports.insert (port); }
private:
PortSet ports;
+ boost::scoped_array<Sample> buffer;
+ framecnt_t buffer_size;
};
/// Handles RegionExportChannels and does actual reading from region
-class RegionExportChannelFactory : public sigc::trackable
+class RegionExportChannelFactory
{
public:
enum Type {
Fades,
Processed
};
-
+
RegionExportChannelFactory (Session * session, AudioRegion const & region, AudioTrack & track, Type type);
~RegionExportChannelFactory ();
ExportChannelPtr create (uint32_t channel);
- void read (uint32_t channel, Sample * data, nframes_t frames_to_read);
-
+ void read (uint32_t channel, Sample *& data, framecnt_t frames_to_read);
+
private:
- int new_cycle_started () { buffers_up_to_date = false; return 0; }
- void update_buffers (nframes_t frames);
+ int new_cycle_started (framecnt_t) { buffers_up_to_date = false; return 0; }
+ void update_buffers (framecnt_t frames);
AudioRegion const & region;
AudioTrack & track;
Type type;
- nframes_t frames_per_cycle;
+ framecnt_t frames_per_cycle;
size_t n_channels;
BufferSet buffers;
bool buffers_up_to_date;
- nframes_t region_start;
- nframes_t position;
-
- Sample * mixdown_buffer;
- Sample * gain_buffer;
+ framecnt_t region_start;
+ framecnt_t position;
+
+ boost::scoped_array<Sample> mixdown_buffer;
+ boost::scoped_array<Sample> gain_buffer;
+
+ PBD::ScopedConnection export_connection;
};
/// Export channel that reads from region channel
friend class RegionExportChannelFactory;
public:
- void read (Sample * data, nframes_t frames_to_read) const { factory.read (channel, data, frames_to_read); }
- void get_state (XMLNode * node) const {};
- void set_state (XMLNode * node, Session & session) {};
+ void read (Sample *& data, framecnt_t frames_to_read) const { factory.read (channel, data, frames_to_read); }
+ void get_state (XMLNode * /*node*/) const {};
+ void set_state (XMLNode * /*node*/, Session & /*session*/) {};
bool empty () const { return false; }
// Region export should never have duplicate channels, so there need not be any semantics here
bool operator< (ExportChannel const & other) const { return this < &other; }
private:
- RegionExportChannel (RegionExportChannelFactory & factory, uint32_t channel) :
- factory (factory),
- channel (channel)
+ RegionExportChannel (RegionExportChannelFactory & factory, uint32_t channel)
+ : factory (factory)
+ , channel (channel)
{}
-
+
RegionExportChannelFactory & factory;
uint32_t channel;
};