2 Copyright (C) 2016 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include <cairomm/context.h>
20 #include <cairomm/surface.h>
21 #include <pangomm/layout.h>
23 #include "pbd/compose.h"
24 #include "pbd/debug.h"
25 #include "pbd/failed_constructor.h"
27 #include "ardour/async_midi_port.h"
28 #include "ardour/audioengine.h"
29 #include "ardour/debug.h"
30 #include "ardour/midiport_manager.h"
31 #include "ardour/session.h"
34 using namespace ARDOUR;
38 using namespace ArdourSurface;
42 #include "pbd/abstract_ui.cc" // instantiate template
44 const int Push2::cols = 960;
45 const int Push2::rows = 160;
46 const int Push2::pixels_per_row = 1024;
48 #define ABLETON 0x2982
51 Push2::Push2 (Session& s)
52 : ControlProtocol (s, string (X_("Ableton Push2")))
53 , AbstractUI<Push2Request> (name())
56 , frame_buffer (Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, cols, rows))
71 if ((handle = libusb_open_device_with_vid_pid (NULL, ABLETON, PUSH2)) == 0) {
75 if ((err = libusb_claim_interface (handle, 0x00))) {
79 device_frame_buffer[0] = new uint16_t[rows*pixels_per_row];
80 device_frame_buffer[1] = new uint16_t[rows*pixels_per_row];
82 memset (device_frame_buffer[0], 0, sizeof (uint16_t) * rows * pixels_per_row);
83 memset (device_frame_buffer[1], 0, sizeof (uint16_t) * rows * pixels_per_row);
85 frame_header[0] = 0xef;
86 frame_header[1] = 0xcd;
87 frame_header[2] = 0xab;
88 frame_header[3] = 0x89;
89 memset (&frame_header[4], 0, 12);
93 _async_in[0] = AudioEngine::instance()->register_input_port (DataType::MIDI, X_("push2 in1"), true);
94 _async_out[0] = AudioEngine::instance()->register_output_port (DataType::MIDI, X_("push2 out1"), true);
96 if (_async_in[0] == 0 || _async_out[0] == 0) {
100 _input_port[0] = boost::dynamic_pointer_cast<AsyncMIDIPort>(_async_in[0]).get();
101 _output_port[0] = boost::dynamic_pointer_cast<AsyncMIDIPort>(_async_out[0]).get();
103 _async_in[1] = AudioEngine::instance()->register_input_port (DataType::MIDI, X_("push2 in2"), true);
104 _async_out[1] = AudioEngine::instance()->register_output_port (DataType::MIDI, X_("push2 out2"), true);
106 if (_async_in[1] == 0 || _async_out[1] == 0) {
110 _input_port[1] = boost::dynamic_pointer_cast<AsyncMIDIPort>(_async_in[1]).get();
111 _output_port[1] = boost::dynamic_pointer_cast<AsyncMIDIPort>(_async_out[1]).get();
115 asp = dynamic_cast<AsyncMIDIPort*> (_input_port[0]);
116 asp->xthread().set_receive_handler (sigc::bind (sigc::mem_fun (this, &Push2::midi_input_handler), _input_port[0]));
117 asp->xthread().attach (main_loop()->get_context());
119 asp = dynamic_cast<AsyncMIDIPort*> (_input_port[1]);
120 asp->xthread().set_receive_handler (sigc::bind (sigc::mem_fun (this, &Push2::midi_input_handler), _input_port[1]));
121 asp->xthread().attach (main_loop()->get_context());
129 AudioEngine::instance()->unregister_port (_async_in[0]);
130 AudioEngine::instance()->unregister_port (_async_out[0]);
131 AudioEngine::instance()->unregister_port (_async_in[1]);
132 AudioEngine::instance()->unregister_port (_async_out[1]);
134 _async_in[0].reset ((ARDOUR::Port*) 0);
135 _async_out[0].reset ((ARDOUR::Port*) 0);
136 _async_in[1].reset ((ARDOUR::Port*) 0);
137 _async_out[1].reset ((ARDOUR::Port*) 0);
139 vblank_connection.disconnect ();
142 libusb_release_interface (handle, 0x00);
143 libusb_close (handle);
146 delete [] device_frame_buffer[0];
147 device_frame_buffer[0] = 0;
149 delete [] device_frame_buffer[1];
150 device_frame_buffer[1] = 0;
158 libusb_device_handle *h;
161 if ((h = libusb_open_device_with_vid_pid (NULL, ABLETON, PUSH2)) == 0) {
162 DEBUG_TRACE (DEBUG::Push2, "no Push2 device found\n");
167 DEBUG_TRACE (DEBUG::Push2, "Push2 device located\n");
172 Push2::request_factory (uint32_t num_requests)
174 /* AbstractUI<T>::request_buffer_factory() is a template method only
175 instantiated in this source module. To provide something visible for
176 use in the interface/descriptor, we have this static method that is
179 return request_buffer_factory (num_requests);
183 Push2::do_request (Push2Request * req)
185 DEBUG_TRACE (DEBUG::Push2, string_compose ("doing request type %1\n", req->type));
186 if (req->type == CallSlot) {
188 call_slot (MISSING_INVALIDATOR, req->the_slot);
190 } else if (req->type == Quit) {
204 /** render host-side frame buffer (a Cairo ImageSurface) to the current
205 * device-side frame buffer. The device frame buffer will be pushed to the
206 * device on the next call to vblank()
212 /* ensure that all drawing has been done before we fetch pixel data */
214 frame_buffer->flush ();
216 const int stride = 3840; /* bytes per row for Cairo::FORMAT_ARGB32 */
217 const uint8_t* data = frame_buffer->get_data ();
219 /* fill frame buffer (320kB) */
221 Glib::Threads::Mutex::Lock lm (fb_lock);
223 uint16_t* fb = (uint16_t*) device_frame_buffer[device_buffer];
225 for (int row = 0; row < rows; ++row) {
227 const uint8_t* dp = data + row * stride;
229 for (int col = 0; col < cols; ++col) {
231 /* fetch r, g, b (range 0..255). Ignore alpha */
233 const int r = (*((const uint32_t*)dp) >> 16) & 0xff;
234 const int g = (*((const uint32_t*)dp) >> 8) & 0xff;
235 const int b = *((const uint32_t*)dp) & 0xff;
237 /* convert to 5 bits, 6 bits, 5 bits, respectively */
238 /* generate 16 bit BGB565 value */
240 *fb++ = (r >> 3) | ((g & 0xfc) << 3) | ((b & 0xf8) << 8);
245 /* skip 128 bytes to next line. This is filler, used to avoid line borders occuring in the middle of 512
249 fb += 64; /* 128 bytes = 64 int16_t */
252 /* swap buffers (under lock protection) */
253 // device_buffer = (device_buffer ? 0 : 1);
262 const int timeout_msecs = 1000;
265 if ((err = libusb_bulk_transfer (handle, 0x01, frame_header, sizeof (frame_header), &transferred, timeout_msecs))) {
270 Glib::Threads::Mutex::Lock lm (fb_lock);
272 if ((err = libusb_bulk_transfer (handle, 0x01, (uint8_t*) device_frame_buffer[device_buffer] , 2 * rows * pixels_per_row, &transferred, timeout_msecs))) {
281 Push2::set_active (bool yn)
283 DEBUG_TRACE (DEBUG::Push2, string_compose("Push2Protocol::set_active init with yn: '%1'\n", yn));
285 if (yn == active()) {
291 /* start event loop */
296 DEBUG_TRACE (DEBUG::Push2, "device open failed\n");
301 // connect_session_signals ();
305 Cairo::RefPtr<Cairo::Context> context = Cairo::Context::create (frame_buffer);
307 cerr << "Cannot create context\n";
310 Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
312 cerr << "Cannot create layout\n";
316 layout->set_text ("hello, Ardour");
317 Pango::FontDescription fd ("Sans Bold 12");
318 layout->set_font_description (fd);
320 context->set_source_rgb (0.0, 1.0, 1.0);
321 context->rectangle (0, 0, 960, 160);
323 context->set_source_rgb (0.0, 0.0, 0.0);
324 context->rectangle (50, 50, 860, 60);
326 context->move_to (60, 60);
327 context->set_source_rgb ((random()%255) / 255.0, (random()%255) / 255.0, (random()%255) / 255.0);
328 layout->update_from_cairo_context (context);
329 layout->show_in_cairo_context (context);
333 /* set up periodic task used to push a frame buffer to the
334 * device (25fps). The device can handle 60fps, but we don't
335 * need that frame rate.
338 Glib::RefPtr<Glib::TimeoutSource> vblank_timeout = Glib::TimeoutSource::create (40); // milliseconds
339 vblank_connection = vblank_timeout->connect (sigc::mem_fun (*this, &Push2::vblank));
340 vblank_timeout->attach (main_loop()->get_context());
348 ControlProtocol::set_active (yn);
350 DEBUG_TRACE (DEBUG::Push2, string_compose("Push2Protocol::set_active done with yn: '%1'\n", yn));
356 Push2::write (int port, const MidiByteArray& data)
358 /* immediate delivery */
359 _output_port[port]->write (&data[0], data.size(), 0);
363 Push2::midi_input_handler (IOCondition ioc, MIDI::Port* port)
366 DEBUG_TRACE (DEBUG::Push2, "MIDI port closed\n");
372 DEBUG_TRACE (DEBUG::Push2, string_compose ("something happend on %1\n", port->name()));
374 AsyncMIDIPort* asp = dynamic_cast<AsyncMIDIPort*>(port);
379 DEBUG_TRACE (DEBUG::Push2, string_compose ("data available on %1\n", port->name()));
380 framepos_t now = AudioEngine::instance()->sample_time();
381 // port->parse (now);