The great audio processing overhaul.

The vast majority of Route signal processing is now simply in the list of
processors.  There are definitely regressions here, but there's also
a lot of things fixed.  It's far too much work to let diverge anymore
regardless, so here it is.

The basic model is: A route has a fixed set of input channels (matching
its JACK input ports and diskstream).  The first processor takes this
as input.  The next processor is configured using the first processor's
output as input, and is allowed to choose whatever output it wants
given that input... and so on, and so on.  Finally, the last processor's
requested output is used to set up the panner and create whatever Jack
ports are needed to output the data.

All 'special' internal processors (meter, fader, amp, insert, send) are
currently transparent: they read any input, and return the same set
of channels back (unmodified, except for amp).

User visible changes:
 * LV2 Instrument support (tracks with both MIDI and audio channels)
 * MIDI in/out plugin support
 * Generic plugin replication (for MIDI plugins, MIDI/audio plugins)
 * Movable meter point

Known Bugs:
 * Things seem to get weird on loaded sessions
 * Output delivery is sketchy
 * 2.0 session loading was probably already broken...
   but it's definitely broken now :)

Please test this and file bugs if you have any time...



git-svn-id: svn://localhost/ardour2/branches/3.0@5055 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 45 insertions, 4 deletions

diff --git a/libs/ardour/ardour/amp.h b/libs/ardour/ardour/amp.h
index 402a29542d..fa9de724ad 100644
--- a/libs/ardour/ardour/amp.h
+++ b/libs/ardour/ardour/amp.h
@@ -20,22 +20,63 @@
 #define __ardour_amp_h__
 
 #include "ardour/types.h"
+#include "ardour/chan_count.h"
+#include "ardour/processor.h"
 
 namespace ARDOUR {
 
 class BufferSet;
+class IO;
 
 
 /** Applies a declick operation to all audio inputs, passing the same number of
  * audio outputs, and passing through any other types unchanged.
- *
- * FIXME: make this a Processor.
  */
-class Amp {
+class Amp : public Processor {
 public:
-	static void run_in_place (BufferSet& bufs, nframes_t nframes, gain_t initial, gain_t target, bool invert_polarity);
+	Amp(Session& s, IO& io);
+
+	bool can_support_io_configuration (const ChanCount& in, ChanCount& out) const;
+	bool configure_io (ChanCount in, ChanCount out);
+	
+	void run_in_place (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes);
+
+	bool apply_gain() const  { return _apply_gain; }
+	void apply_gain(bool yn) { _apply_gain = yn; }
+
+	bool apply_gain_automation() const  { return _apply_gain_automation; }
+	void apply_gain_automation(bool yn) { _apply_gain_automation = yn; }
+
+	void muute(bool yn) { _mute = yn; }
+
+	void set_gain(float current, float desired) {
+		_current_gain = current;
+		_desired_gain = desired;
+	}
+	
+	void apply_mute(bool yn, float current=1.0, float desired=0.0) {
+		_mute = yn;
+		_current_mute_gain = current;
+		_desired_mute_gain = desired;
+	}
+
+	XMLNode& state (bool full);
+	XMLNode& get_state();
+
+	static void apply_gain (BufferSet& bufs, nframes_t nframes,
+			gain_t initial, gain_t target, bool invert_polarity);
 
 	static void apply_simple_gain(BufferSet& bufs, nframes_t nframes, gain_t target);
+
+private:
+	IO&   _io;
+	bool  _mute;
+	bool  _apply_gain;
+	bool  _apply_gain_automation;
+	float _current_gain;
+	float _desired_gain;
+	float _current_mute_gain;
+	float _desired_mute_gain;
 };