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livetrax/gtk2_ardour/panner2d.cc
David Robillard 7183242b8c 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
2009-05-07 06:30:50 +00:00

828 lines
16 KiB
C++

/*
Copyright (C) 2002 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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cmath>
#include <climits>
#include <string.h>
#include <cairo.h>
#include <gtkmm/menu.h>
#include "pbd/error.h"
#include "ardour/panner.h"
#include <gtkmm2ext/gtk_ui.h>
#include "panner2d.h"
#include "keyboard.h"
#include "gui_thread.h"
#include "i18n.h"
using namespace std;
using namespace Gtk;
using namespace sigc;
using namespace ARDOUR;
using namespace PBD;
Panner2d::Target::Target (float xa, float ya, const char *txt)
: x (xa, 0.0, 1.0, 0.01, 0.1)
, y (ya, 0.0, 1.0, 0.01, 0.1)
, azimuth (M_PI/2.0, 0.0, 2.0 * M_PI, 0.1, 0.5)
, text (txt ? strdup (txt) : 0)
{
azimuth.set_value ((random() / (double) INT_MAX) * (2.0 * M_PI));
}
Panner2d::Target::~Target ()
{
if (text) {
free (text);
}
}
void
Panner2d::Target::set_text (const char* txt)
{
if (text) {
free (text);
}
text = strdup (txt);
}
Panner2d::Panner2d (boost::shared_ptr<Panner> p, int32_t h)
: panner (p), width (0), height (h)
{
allow_x = false;
allow_y = false;
allow_target = false;
panner->StateChanged.connect (mem_fun(*this, &Panner2d::handle_state_change));
panner->Changed.connect (mem_fun(*this, &Panner2d::handle_position_change));
drag_target = 0;
set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
}
Panner2d::~Panner2d()
{
for (Targets::iterator i = targets.begin(); i != targets.end(); ++i) {
delete i->second;
}
}
void
Panner2d::reset (uint32_t n_inputs)
{
Targets::size_type existing_pucks = pucks.size();
/* pucks */
while (pucks.size() < n_inputs) {
add_puck ("", 0.0, 0.0);
}
while (pucks.size() > n_inputs) {
pucks.erase (pucks.begin());
}
for (Targets::iterator x = pucks.begin(); x != pucks.end(); ++x) {
(*x).second->visible = false;
}
switch (n_inputs) {
case 0:
break;
case 1:
pucks[0]->set_text ("");
pucks[0]->x.set_value (0.0);
pucks[0]->y.set_value (0.5);
pucks[0]->visible = true;
break;
case 2:
pucks[0]->set_text ("R");
pucks[0]->visible = true;
pucks[1]->set_text ("L");
if (existing_pucks < 2) {
pucks[1]->x.set_value (0.25f);
pucks[1]->y.set_value (0.5f);
}
pucks[1]->visible = true;
break;
default:
for (uint32_t i = 0; i < n_inputs; ++i) {
char buf[64];
snprintf (buf, sizeof (buf), "%" PRIu32, i);
pucks[i]->set_text (buf);
if (existing_pucks < i) {
float x, y;
panner->streampanner (i).get_position (x, y);
pucks[i]->x.set_value (x);
pucks[i]->y.set_value (y);
}
pucks[i]->visible = true;
}
break;
}
/* add all outputs */
while (targets.size() < panner->nouts()) {
add_target (0.0, 0.0);
}
while (targets.size() > panner->nouts()) {
targets.erase (targets.begin());
}
for (Targets::iterator x = targets.begin(); x != targets.end(); ++x) {
(*x).second->visible = false;
}
for (uint32_t n = 0; n < panner->nouts(); ++n) {
char buf[16];
snprintf (buf, sizeof (buf), "%d", n+1);
targets[n]->set_text (buf);
targets[n]->x.set_value (panner->output(n).x);
targets[n]->y.set_value (panner->output(n).y);
targets[n]->visible = true;
}
allow_x_motion (true);
allow_y_motion (true);
allow_target_motion (true);
queue_draw ();
}
Gtk::Adjustment&
Panner2d::azimuth (uint32_t which)
{
assert (which < pucks.size());
return pucks[which]->azimuth;
}
void
Panner2d::on_size_allocate (Gtk::Allocation& alloc)
{
width = alloc.get_width();
height = alloc.get_height();
if (height > 100) {
width -= 20;
height -= 20;
}
DrawingArea::on_size_allocate (alloc);
}
int
Panner2d::add_puck (const char* text, float x, float y)
{
Target* puck = new Target (x, y, text);
pair<int,Target *> newpair;
newpair.first = pucks.size();
newpair.second = puck;
pucks.insert (newpair);
puck->visible = true;
return 0;
}
int
Panner2d::add_target (float x, float y)
{
Target *target = new Target (x, y, "");
pair<int,Target *> newpair;
newpair.first = targets.size();
newpair.second = target;
targets.insert (newpair);
target->visible = true;
queue_draw ();
return newpair.first;
}
void
Panner2d::drop_targets ()
{
for (Targets::iterator i = targets.begin(); i != targets.end(); ) {
Targets::iterator tmp;
tmp = i;
++tmp;
delete i->second;
targets.erase (i);
i = tmp;
}
queue_draw ();
}
void
Panner2d::remove_target (int which)
{
Targets::iterator i = targets.find (which);
if (i != targets.end()) {
delete i->second;
targets.erase (i);
queue_draw ();
}
}
void
Panner2d::handle_state_change ()
{
ENSURE_GUI_THREAD(mem_fun(*this, &Panner2d::handle_state_change));
queue_draw ();
}
void
Panner2d::handle_position_change ()
{
uint32_t n;
ENSURE_GUI_THREAD(mem_fun(*this, &Panner2d::handle_position_change));
for (n = 0; n < pucks.size(); ++n) {
float x, y;
panner->streampanner(n).get_position (x, y);
pucks[n]->x.set_value (x);
pucks[n]->y.set_value (y);
}
for (n = 0; n < targets.size(); ++n) {
targets[n]->x.set_value (panner->output(n).x);
targets[n]->y.set_value (panner->output(n).y);
}
queue_draw ();
}
void
Panner2d::move_target (int which, float x, float y)
{
Targets::iterator i = targets.find (which);
Target *target;
if (!allow_target) {
return;
}
if (i != targets.end()) {
target = i->second;
target->x.set_value (x);
target->y.set_value (y);
queue_draw ();
}
}
void
Panner2d::move_puck (int which, float x, float y)
{
Targets::iterator i = pucks.find (which);
Target *target;
if (i != pucks.end()) {
target = i->second;
target->x.set_value (x);
target->y.set_value (y);
queue_draw ();
}
}
void
Panner2d::show_puck (int which)
{
Targets::iterator i = pucks.find (which);
if (i != pucks.end()) {
Target* puck = i->second;
if (!puck->visible) {
puck->visible = true;
queue_draw ();
}
}
}
void
Panner2d::hide_puck (int which)
{
Targets::iterator i = pucks.find (which);
if (i != pucks.end()) {
Target* puck = i->second;
if (!puck->visible) {
puck->visible = false;
queue_draw ();
}
}
}
void
Panner2d::show_target (int which)
{
Targets::iterator i = targets.find (which);
if (i != targets.end()) {
if (!i->second->visible) {
i->second->visible = true;
queue_draw ();
}
}
}
void
Panner2d::hide_target (int which)
{
Targets::iterator i = targets.find (which);
if (i != targets.end()) {
if (i->second->visible) {
i->second->visible = false;
queue_draw ();
}
}
}
Panner2d::Target *
Panner2d::find_closest_object (gdouble x, gdouble y, int& which, bool& is_puck) const
{
gdouble efx, efy;
gdouble cx, cy;
Target *closest = 0;
Target *candidate;
float distance;
float best_distance = FLT_MAX;
int pwhich;
efx = x/width;
efy = y/height;
which = 0;
pwhich = 0;
is_puck = false;
for (Targets::const_iterator i = targets.begin(); i != targets.end(); ++i, ++which) {
candidate = i->second;
cx = candidate->x.get_value();
cy = candidate->y.get_value();
distance = sqrt ((cx - efx) * (cx - efx) +
(cy - efy) * (cy - efy));
if (distance < best_distance) {
closest = candidate;
best_distance = distance;
}
}
for (Targets::const_iterator i = pucks.begin(); i != pucks.end(); ++i, ++pwhich) {
candidate = i->second;
cx = candidate->x.get_value();
cy = candidate->y.get_value();
distance = sqrt ((cx - efx) * (cx - efx) +
(cy - efy) * (cy - efy));
if (distance < best_distance) {
closest = candidate;
best_distance = distance;
is_puck = true;
which = pwhich;
}
}
return closest;
}
bool
Panner2d::on_motion_notify_event (GdkEventMotion *ev)
{
gint x, y;
GdkModifierType state;
if (ev->is_hint) {
gdk_window_get_pointer (ev->window, &x, &y, &state);
} else {
x = (int) floor (ev->x);
y = (int) floor (ev->y);
state = (GdkModifierType) ev->state;
}
return handle_motion (x, y, state);
}
bool
Panner2d::on_expose_event (GdkEventExpose *event)
{
gint x, y;
float fx, fy;
cairo_t* cr;
cr = gdk_cairo_create (get_window()->gobj());
cairo_set_line_width (cr, 1.0);
cairo_rectangle (cr, event->area.x, event->area.y, event->area.width, event->area.height);
if (!panner->bypassed()) {
cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, 1.0);
} else {
cairo_set_source_rgba (cr, 0.1, 0.1, 0.1, 0.2);
}
cairo_fill_preserve (cr);
cairo_clip (cr);
if (height > 100) {
cairo_translate (cr, 10.0, 10.0);
}
cairo_set_source_rgb (cr, 0.0, 0.1, 0.7);
cairo_move_to (cr, 0.5, height/2.0+0.5);
cairo_line_to (cr, height+0.5, height/2+0.5);
cairo_stroke (cr);
cairo_move_to (cr, height/2+0.5, 0.5);
cairo_line_to (cr, height/2+0.5, height+0.5);
cairo_stroke (cr);
cairo_arc (cr, height/2, height/2, height/2, 0, 2.0 * M_PI);
cairo_stroke (cr);
if (!panner->bypassed()) {
float arc_radius;
cairo_select_font_face (cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
if (height < 100) {
cairo_set_font_size (cr, 10);
arc_radius = 2.0;
} else {
cairo_set_font_size (cr, 16);
arc_radius = 4.0;
}
for (Targets::iterator i = pucks.begin(); i != pucks.end(); ++i) {
Target* puck = i->second;
if (puck->visible) {
/* redraw puck */
fx = min (puck->x.get_value(), 1.0);
fx = max (fx, -1.0f);
x = (gint) floor (width * fx - 4);
fy = min (puck->y.get_value(), 1.0);
fy = max (fy, -1.0f);
y = (gint) floor (height * fy - 4);
cairo_arc (cr, x, y, arc_radius, 0, 2.0 * M_PI);
cairo_set_source_rgb (cr, 0.8, 0.2, 0.1);
cairo_close_path (cr);
cairo_fill (cr);
/* arrow */
if (height > 100.0f) {
float endx, endy;
endx = x;
endy = y;
cairo_save (cr);
cairo_translate (cr, x, y);
cairo_rotate (cr, puck->azimuth.get_value());
/* horizontal left-to-right line (rotation will rotate it, duh) */
endx = 30.0;
endy = 0.0;
/* stem */
cairo_set_line_width (cr, 4.0);
cairo_move_to (cr, 0.0, 0.0);
cairo_line_to (cr, endx, endy);
cairo_stroke (cr);
/* arrow head */
cairo_move_to (cr, endx - 10.0, endy + 10.0);
cairo_line_to (cr, endx, endy);
cairo_line_to (cr, endx - 10.0, endy - 10.0);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_stroke (cr);
cairo_restore (cr);
}
cairo_move_to (cr, x + 6, y + 6);
cairo_show_text (cr, puck->text);
}
}
/* redraw any visible targets */
int n = 0;
for (Targets::iterator i = targets.begin(); i != targets.end(); ++i) {
Target *target = i->second;
char buf[256];
++n;
if (target->visible) {
fx = min (target->x.get_value(), 1.0);
fx = max (fx, -1.0f);
x = (gint) floor (width * fx);
fy = min (target->y.get_value(), 1.0);
fy = max (fy, -1.0f);
y = (gint) floor (height * fy);
snprintf (buf, sizeof (buf), "%d", n);
cairo_set_source_rgb (cr, 0.0, 0.8, 0.1);
cairo_rectangle (cr, x-2, y-2, 4, 4);
cairo_fill (cr);
cairo_move_to (cr, x+6, y+6);
cairo_show_text (cr, buf);
}
}
}
cairo_destroy (cr);
return TRUE;
}
bool
Panner2d::on_button_press_event (GdkEventButton *ev)
{
GdkModifierType state;
if (ev->type == GDK_2BUTTON_PRESS && ev->button == 1) {
return false;
}
switch (ev->button) {
case 1:
case 2:
drag_target = find_closest_object (ev->x, ev->y, drag_index, drag_is_puck);
drag_x = (int) floor (ev->x);
drag_y = (int) floor (ev->y);
state = (GdkModifierType) ev->state;
return handle_motion (drag_x, drag_y, state);
break;
default:
break;
}
return FALSE;
}
bool
Panner2d::on_button_release_event (GdkEventButton *ev)
{
gint x, y;
GdkModifierType state;
bool ret = false;
switch (ev->button) {
case 1:
x = (int) floor (ev->x);
y = (int) floor (ev->y);
state = (GdkModifierType) ev->state;
if (drag_is_puck && (Keyboard::modifier_state_contains (state, Keyboard::TertiaryModifier))) {
for (Targets::iterator i = pucks.begin(); i != pucks.end(); ++i) {
//Target* puck = i->second;
/* XXX DO SOMETHING TO SET PUCK BACK TO "normal" */
}
queue_draw ();
PuckMoved (-1);
ret = true;
} else {
ret = handle_motion (x, y, state);
}
drag_target = 0;
break;
case 2:
x = (int) floor (ev->x);
y = (int) floor (ev->y);
state = (GdkModifierType) ev->state;
if (drag_is_puck && (Keyboard::modifier_state_contains (state, Keyboard::TertiaryModifier))) {
toggle_bypass ();
ret = true;
} else {
ret = handle_motion (x, y, state);
}
drag_target = 0;
break;
case 3:
break;
}
return ret;
}
gint
Panner2d::handle_motion (gint evx, gint evy, GdkModifierType state)
{
if (drag_target == 0) {
return false;
}
if ((state & (GDK_BUTTON1_MASK|GDK_BUTTON2_MASK)) == 0) {
return false;
}
int x, y;
bool need_move = false;
if (!drag_is_puck && !allow_target) {
cerr << "dip = " << drag_is_puck << " at = " << allow_target << endl;
return true;
}
if (state & GDK_BUTTON1_MASK && !(state & GDK_BUTTON2_MASK)) {
if (allow_x || !drag_is_puck) {
float new_x;
x = min (evx, width - 1);
x = max (x, 0);
new_x = (float) x / (width - 1);
if (new_x != drag_target->x.get_value()) {
drag_target->x.set_value (new_x);
need_move = true;
}
}
if (allow_y || drag_is_puck) {
float new_y;
y = min (evy, height - 1);
y = max (y, 0);
new_y = (float) y / (height - 1);
if (new_y != drag_target->y.get_value()) {
drag_target->y.set_value (new_y);
need_move = true;
}
}
if (need_move) {
if (drag_is_puck) {
panner->streampanner(drag_index).set_position (
drag_target->x.get_value(), drag_target->y.get_value(), false);
} else {
TargetMoved (drag_index);
}
queue_draw ();
}
} else if ((state & GDK_BUTTON2_MASK) && !(state & GDK_BUTTON1_MASK)) {
if (!drag_is_puck) {
return false;
}
int xdelta = drag_x - evx;
int ydelta = drag_x - evy;
drag_target->azimuth.set_value (drag_target->azimuth.get_value() + (2 * M_PI) * ((float)ydelta)/height * ((float) -xdelta)/height);
queue_draw ();
}
return true;
}
void
Panner2d::toggle_bypass ()
{
panner->set_bypassed (!panner->bypassed());
}
void
Panner2d::allow_x_motion (bool yn)
{
allow_x = yn;
}
void
Panner2d::allow_target_motion (bool yn)
{
allow_target = yn;
}
void
Panner2d::allow_y_motion (bool yn)
{
allow_y = yn;
}
Panner2dWindow::Panner2dWindow (boost::shared_ptr<Panner> p, int32_t h, uint32_t inputs)
: widget (p, h)
, reset_button (_("Reset"))
, bypass_button (_("Bypass"))
, mute_button (_("Mute"))
{
widget.set_name ("MixerPanZone");
set_title (_("Panner"));
widget.set_size_request (h, h);
button_box.set_spacing (6);
button_box.pack_start (reset_button, false, false);
button_box.pack_start (bypass_button, false, false);
button_box.pack_start (mute_button, false, false);
spinner_box.set_spacing (6);
left_side.set_spacing (6);
left_side.pack_start (button_box, false, false);
left_side.pack_start (spinner_box, false, false);
reset_button.show ();
bypass_button.show ();
mute_button.show ();
button_box.show ();
spinner_box.show ();
left_side.show ();
hpacker.set_spacing (6);
hpacker.set_border_width (12);
hpacker.pack_start (widget, false, false);
hpacker.pack_start (left_side, false, false);
hpacker.show ();
add (hpacker);
reset (inputs);
widget.show ();
}
void
Panner2dWindow::reset (uint32_t n_inputs)
{
widget.reset (n_inputs);
while (spinners.size() < n_inputs) {
spinners.push_back (new Gtk::SpinButton (widget.azimuth (spinners.size())));
spinner_box.pack_start (*spinners.back(), false, false);
spinners.back()->set_digits (4);
spinners.back()->show ();
}
while (spinners.size() > n_inputs) {
spinner_box.remove (*spinners.back());
delete spinners.back();
spinners.erase (--spinners.end());
}
}