4 * Copyright (C) 2015 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include "audiodevice.h"
24 #include "bcsignals.h"
29 #include "edlsession.h"
32 #include "filesystem.h"
33 #include "formattools.h"
35 #include "mainerror.h"
36 #include "mainindexes.h"
37 #include "mainprogress.h"
41 #include "mwindowgui.h"
42 #include "overlayframe.h"
43 #include "preferences.h"
45 #include "renderengine.h"
47 #include "transportque.h"
54 ProxyMenuItem::ProxyMenuItem(MWindow *mwindow)
55 : BC_MenuItem(_("Proxy settings..."), _("Alt-r"), 'r')
57 this->mwindow = mwindow;
61 ProxyMenuItem::~ProxyMenuItem()
66 void ProxyMenuItem::create_objects()
68 dialog = new ProxyDialog(mwindow);
71 int ProxyMenuItem::handle_event()
73 mwindow->gui->unlock_window();
75 mwindow->gui->lock_window("ProxyMenuItem::handle_event");
80 ProxyDialog::ProxyDialog(MWindow *mwindow)
82 this->mwindow = mwindow;
86 // quicker than some, not as good as others
87 asset->format = FILE_FFMPEG;
88 strcpy(asset->fformat, "mpeg");
89 strcpy(asset->vcodec, "mpeg.mpeg");
90 asset->ff_video_bitrate = 2000000;
92 bzero(size_text, sizeof(char*) * MAX_SIZES);
93 bzero(size_factors, sizeof(int) * MAX_SIZES);
94 size_text[0] = cstrdup(_("Original size"));
99 ProxyDialog::~ProxyDialog()
102 for( int i=0; i<MAX_SIZES; ++i ) delete [] size_text[i];
103 asset->remove_user();
106 BC_Window* ProxyDialog::new_gui()
108 asset->format = FILE_FFMPEG;
109 asset->load_defaults(mwindow->defaults, "PROXY_", 1, 1, 0, 0, 0);
110 mwindow->gui->lock_window("ProxyDialog::new_gui");
112 mwindow->gui->get_abs_cursor(cx, cy);
113 gui = new ProxyWindow(mwindow, this, cx - WIDTH/2, cy - HEIGHT/2);
114 gui->create_objects();
115 mwindow->gui->unlock_window();
119 void ProxyDialog::scale_to_text(char *string, int scale)
121 strcpy(string, size_text[0]);
122 for( int i = 0; i < total_sizes; i++ ) {
123 if( scale == size_factors[i] ) {
124 strcpy(string, size_text[i]);
131 void ProxyDialog::calculate_sizes()
133 for( int i=1; i<total_sizes; ++i ) {
134 delete [] size_text[i];
140 int orig_w = mwindow->edl->session->output_w * orig_scale;
141 int orig_h = mwindow->edl->session->output_h * orig_scale;
144 // w,h should stay even for yuv
145 int ow = orig_w, oh = orig_h;
146 if( BC_CModels::is_yuv(mwindow->edl->session->color_model) ) {
149 for( int i=2; i<MAX_SCALE; ++i ) {
150 if( (ow % i) != 0 ) continue;
151 if( (oh % i) != 0 ) continue;
152 size_factors[total_sizes++] = i;
156 size_factors[total_sizes++] = 2; size_factors[total_sizes++] = 3;
157 size_factors[total_sizes++] = 8; size_factors[total_sizes++] = 12;
158 size_factors[total_sizes++] = 16; size_factors[total_sizes++] = 24;
159 size_factors[total_sizes++] = 32;
161 for( int i=1; i<total_sizes; ++i ) {
162 char string[BCTEXTLEN];
163 sprintf(string, "1/%d", size_factors[i]);
164 size_text[i] = cstrdup(string);
168 void ProxyDialog::handle_close_event(int result)
171 if( !File::renders_video(asset) ) {
172 eprintf("Specified format does not render video");
175 mwindow->edl->session->proxy_auto_scale = auto_scale;
176 mwindow->edl->session->proxy_beep = beep;
177 mwindow->edl->session->proxy_disabled_scale = 1;
178 mwindow->gui->lock_window("ProxyDialog::handle_close_event");
179 mwindow->gui->update_proxy_toggle();
180 mwindow->gui->unlock_window();
181 asset->save_defaults(mwindow->defaults, "PROXY_", 1, 1, 0, 0, 0);
182 result = mwindow->to_proxy(asset, new_scale, use_scaler);
183 if( result >= 0 && beep && new_scale != 1 ) {
184 static struct { double freq, secs, gain; }
185 tone[2] = { { 2000., 1.5, 0.5 }, { 4000., 0.25, 0.5 } };
186 int i = result > 0 ? 0 : 1;
187 mwindow->beep(tone[i].freq, tone[i].secs, tone[i].gain);
191 void ProxyRender::to_proxy_path(char *new_path, Indexable *indexable, int scale)
193 // path is already a proxy
194 if( strstr(indexable->path, ".proxy") ) return;
195 strcpy(new_path, indexable->path);
197 int n = sprintf(prxy, ".proxy%d", scale);
198 // insert proxy, path.sfx => path.proxy#-sfx.ext
199 char *ep = new_path + strlen(new_path);
200 char *sfx = strrchr(new_path, '.');
202 char *bp = ep, *cp = (ep += n);
203 while( --bp > sfx ) *--cp = *bp;
209 for( char *cp=prxy; --n>=0; ++cp ) *sfx++ = *cp;
211 const char *ext = indexable->get_video_frames() < 0 ? "png" :
212 format_asset->format == FILE_FFMPEG ?
213 format_asset->fformat :
214 File::get_tag(format_asset->format);
215 while( *ext ) *ep++ = *ext++;
217 //printf("ProxyRender::to_proxy_path %d %s %s\n", __LINE__, new_path), asset->path);
220 int ProxyRender::from_proxy_path(char *new_path, Indexable *indexable, int scale)
222 char prxy[BCTEXTLEN];
223 int n = sprintf(prxy, ".proxy%d", scale);
224 strcpy(new_path, indexable->path);
225 char *ptr = strstr(new_path, prxy);
226 if( !ptr || (ptr[n] != '-' && ptr[n] != '.') ) return 1;
227 // remove proxy, path.proxy#-sfx.ext => path.sfx
228 char *ext = strrchr(ptr, '.');
229 if( !ext ) ext = ptr + strlen(ptr);
231 for( *cp='.'; cp<ext; ++cp ) *ptr++ = *cp;
236 ProxyRender::ProxyRender(MWindow *mwindow, Asset *format_asset)
238 this->mwindow = mwindow;
239 this->format_asset = format_asset;
241 counter_lock = new Mutex("ProxyDialog::counter_lock");
243 failed = 0; canceled = 0;
246 ProxyRender::~ProxyRender()
251 for( int i=0,n=orig_idxbls.size(); i<n; ++i ) orig_idxbls[i]->remove_user();
252 for( int i=0,n=orig_proxies.size(); i<n; ++i ) orig_proxies[i]->remove_user();
253 for( int i=0,n=needed_idxbls.size(); i<n; ++i ) needed_idxbls[i]->remove_user();
254 for( int i=0,n=needed_proxies.size(); i<n; ++i ) needed_proxies[i]->remove_user();
257 Asset *ProxyRender::add_original(Indexable *idxbl, int new_scale)
259 if( !idxbl->have_video() ) return 0;
260 // don't proxy proxies
261 if( strstr(idxbl->path,".proxy") ) return 0;
262 char new_path[BCTEXTLEN];
263 to_proxy_path(new_path, idxbl, new_scale);
264 // don't proxy if not readable
265 if( idxbl->is_asset && access(idxbl->path, R_OK) ) return 0;
266 // add to orig_idxbls & orig_proxies if it isn't already there.
268 for( int i = 0; !got_it && i<orig_proxies.size(); ++i )
269 got_it = !strcmp(orig_proxies[i]->path, new_path);
270 if( got_it ) return 0;
271 Assets *edl_assets = mwindow->edl->assets;
272 Asset *proxy = edl_assets->get_asset(new_path);
274 proxy = new Asset(new_path);
275 // new compression parameters
276 int64_t video_frames = idxbl->get_video_frames();
277 if( video_frames < 0 ) {
278 proxy->format = FILE_PNG;
279 proxy->png_use_alpha = 1;
280 proxy->video_length = -1;
283 proxy->copy_format(format_asset, 0);
284 proxy->video_length = video_frames;
286 proxy->folder_no = AW_PROXY_FOLDER;
287 proxy->audio_data = 0;
288 proxy->video_data = 1;
290 proxy->width = idxbl->get_w() / new_scale;
291 if( proxy->width & 1 ) ++proxy->width;
292 proxy->actual_width = proxy->width;
293 proxy->height = idxbl->get_h() / new_scale;
294 if( proxy->height & 1 ) ++proxy->height;
295 proxy->actual_height = proxy->height;
296 proxy->frame_rate = idxbl->get_frame_rate();
298 orig_proxies.append(proxy);
300 orig_idxbls.append(idxbl);
304 void ProxyRender::add_needed(Indexable *idxbl, Asset *proxy)
306 needed_idxbls.append(idxbl);
308 needed_proxies.append(proxy);
312 void ProxyRender::update_progress()
314 counter_lock->lock();
316 counter_lock->unlock();
317 progress->update(total_rendered);
320 int ProxyRender::is_canceled()
322 return progress->is_cancelled();
325 int ProxyRender::create_needed_proxies(int new_scale)
327 if( !needed_proxies.size() ) return 0;
329 failed = 0; canceled = 0;
331 // create proxy assets which don't already exist
332 int64_t total_len = 0;
333 for( int i = 0; i < needed_idxbls.size(); i++ ) {
334 total_len += needed_idxbls[i]->get_video_frames();
337 // start progress bar. MWindow is locked inside this
338 progress = mwindow->mainprogress->
339 start_progress(_("Creating proxy files..."), total_len);
341 ProxyFarm engine(mwindow, this, &needed_idxbls, &needed_proxies);
342 engine.process_packages();
343 printf("failed=%d canceled=%d\n", failed, progress->is_cancelled());
346 canceled = progress->is_cancelled();
347 progress->stop_progress();
348 delete progress; progress = 0;
350 if( failed && !canceled ) {
351 eprintf("Error making proxy.");
353 return !failed && !canceled ? 0 : 1;
357 ProxyWindow::ProxyWindow(MWindow *mwindow, ProxyDialog *dialog, int x, int y)
358 : BC_Window(_(PROGRAM_NAME ": Proxy settings"), x, y, WIDTH, HEIGHT,
361 this->mwindow = mwindow;
362 this->dialog = dialog;
366 ProxyWindow::~ProxyWindow()
368 lock_window("ProxyWindow::~ProxyWindow");
374 void ProxyWindow::create_objects()
376 lock_window("ProxyWindow::create_objects");
377 int margin = mwindow->theme->widget_border;
379 dialog->use_scaler = mwindow->edl->session->proxy_use_scaler;
380 dialog->orig_scale = mwindow->edl->session->proxy_scale;
381 dialog->auto_scale = mwindow->edl->session->proxy_auto_scale;
382 dialog->beep = mwindow->edl->session->proxy_beep;
383 dialog->new_scale = dialog->orig_scale;
387 add_subwindow(use_scaler = new ProxyUseScaler(this, x, y));
388 y += use_scaler->get_h() + margin;
391 add_subwindow(text = new BC_Title(x, y, _("Scale factor:")));
392 x += text->get_w() + margin;
394 int popupmenu_w = BC_PopupMenu::calculate_w(get_text_width(MEDIUMFONT, dialog->size_text[0]));
395 add_subwindow(scale_factor = new ProxyMenu(mwindow, this, x, y, popupmenu_w, ""));
396 scale_factor->update_sizes();
397 x += scale_factor->get_w() + margin;
399 ProxyTumbler *tumbler;
400 add_subwindow(tumbler = new ProxyTumbler(mwindow, this, x, y));
401 y += tumbler->get_h() + margin;
404 add_subwindow(text = new BC_Title(x, y, _("New media dimensions: ")));
405 x += text->get_w() + margin;
406 add_subwindow(new_dimensions = new BC_Title(x, y, ""));
407 y += new_dimensions->get_h() + margin;
410 add_subwindow(text = new BC_Title(x, y, _("Active Scale: ")));
411 x += text->get_w() + margin;
412 add_subwindow(active_scale = new BC_Title(x, y, ""));
413 y += active_scale->get_h() + margin;
416 format_tools = new ProxyFormatTools(mwindow, this, dialog->asset);
417 format_tools->create_objects(x, y, 0, 1, 0, 0, 0, 1, 0, 1, // skip the path
421 add_subwindow(auto_scale = new ProxyAutoScale(this, x, y));
422 y += auto_scale->get_h() + margin;
423 add_subwindow(beep_on_done = new ProxyBeepOnDone(this, x, y));
424 y += beep_on_done->get_h() + margin;
428 add_subwindow(new BC_OKButton(this));
429 add_subwindow(new BC_CancelButton(this));
434 ProxyFormatTools::ProxyFormatTools(MWindow *mwindow, ProxyWindow *pwindow, Asset *asset)
435 : FormatTools(mwindow, pwindow, asset)
437 this->pwindow = pwindow;
440 void ProxyFormatTools::update_format()
442 FormatTools::update_format();
443 pwindow->use_scaler->update();
446 void ProxyWindow::update()
448 char string[BCSTRLEN];
449 int orig_w = mwindow->edl->session->output_w * dialog->orig_scale;
450 int orig_h = mwindow->edl->session->output_h * dialog->orig_scale;
451 int new_w = orig_w / dialog->new_scale;
452 if( new_w & 1 ) ++new_w;
453 int new_h = orig_h / dialog->new_scale;
454 if( new_h & 1 ) ++new_h;
455 sprintf(string, "%dx%d", new_w, new_h);
456 new_dimensions->update(string);
457 dialog->scale_to_text(string, dialog->new_scale);
458 scale_factor->set_text(string);
459 use_scaler->update();
460 auto_scale->update();
461 int scale = mwindow->edl->session->proxy_scale;
462 if( scale == 1 ) scale = mwindow->edl->session->proxy_disabled_scale;
463 sprintf(string, scale>1 ? "1/%d" : "%d", scale);
464 active_scale->update(string);
468 ProxyUseScaler::ProxyUseScaler(ProxyWindow *pwindow, int x, int y)
469 : BC_CheckBox(x, y, pwindow->dialog->use_scaler, _("Use scaler (FFMPEG only)"))
471 this->pwindow = pwindow;
474 void ProxyUseScaler::update()
476 ProxyDialog *dialog = pwindow->dialog;
477 if( dialog->asset->format != FILE_FFMPEG ) dialog->use_scaler = 0;
478 BC_CheckBox::update(dialog->use_scaler);
479 int scaler_avail = dialog->asset->format == FILE_FFMPEG ? 1 : 0;
480 if( !scaler_avail && enabled ) disable();
481 if( scaler_avail && !enabled ) enable();
484 int ProxyUseScaler::handle_event()
486 pwindow->dialog->new_scale = 1;
487 pwindow->dialog->use_scaler = get_value();
488 pwindow->scale_factor->update_sizes();
493 ProxyAutoScale::ProxyAutoScale(ProxyWindow *pwindow, int x, int y)
494 : BC_CheckBox(x, y, pwindow->dialog->auto_scale, _("Auto proxy/scale media loads"))
496 this->pwindow = pwindow;
499 void ProxyAutoScale::update()
501 ProxyDialog *dialog = pwindow->dialog;
502 if( dialog->new_scale == 1 ) dialog->auto_scale = 0;
503 BC_CheckBox::update(dialog->auto_scale);
504 int can_auto_proxy = dialog->new_scale != 1 ? 1 : 0;
505 if( !can_auto_proxy && enabled ) disable();
506 if( can_auto_proxy && !enabled ) enable();
509 int ProxyAutoScale::handle_event()
511 pwindow->dialog->auto_scale = get_value();
516 ProxyBeepOnDone::ProxyBeepOnDone(ProxyWindow *pwindow, int x, int y)
517 : BC_CheckBox(x, y, pwindow->dialog->beep, _("Beep on done"))
519 this->pwindow = pwindow;
522 int ProxyBeepOnDone::handle_event()
524 pwindow->dialog->beep = get_value();
530 ProxyMenu::ProxyMenu(MWindow *mwindow, ProxyWindow *pwindow,
531 int x, int y, int w, const char *text)
532 : BC_PopupMenu(x, y, w, text, 1)
534 this->mwindow = mwindow;
535 this->pwindow = pwindow;
538 void ProxyMenu::update_sizes()
540 while( total_items() > 0 ) del_item(0);
541 ProxyDialog *dialog = pwindow->dialog;
542 dialog->calculate_sizes();
543 for( int i=0; i < dialog->total_sizes; i++ )
544 add_item(new BC_MenuItem(dialog->size_text[i]));
547 int ProxyMenu::handle_event()
549 ProxyDialog *dialog = pwindow->dialog;
550 for( int i = 0; i < dialog->total_sizes; i++ ) {
551 if( !strcmp(get_text(), pwindow->dialog->size_text[i]) ) {
552 dialog->new_scale = pwindow->dialog->size_factors[i];
553 if( dialog->new_scale == 1 ) dialog->use_scaler = 0;
562 ProxyTumbler::ProxyTumbler(MWindow *mwindow, ProxyWindow *pwindow, int x, int y)
563 : BC_Tumbler(x, y, 0)
565 this->mwindow = mwindow;
566 this->pwindow = pwindow;
569 int ProxyTumbler::handle_up_event()
571 if( pwindow->dialog->new_scale > 1 ) {
573 for( i = 0; i < pwindow->dialog->total_sizes; i++ ) {
574 if( pwindow->dialog->new_scale == pwindow->dialog->size_factors[i] ) {
576 pwindow->dialog->new_scale = pwindow->dialog->size_factors[i];
586 int ProxyTumbler::handle_down_event()
589 for( i = 0; i < pwindow->dialog->total_sizes - 1; i++ ) {
590 if( pwindow->dialog->new_scale == pwindow->dialog->size_factors[i] ) {
592 pwindow->dialog->new_scale = pwindow->dialog->size_factors[i];
603 ProxyPackage::ProxyPackage()
608 ProxyClient::ProxyClient(MWindow *mwindow,
609 ProxyRender *proxy_render, ProxyFarm *server)
612 this->mwindow = mwindow;
613 this->proxy_render = proxy_render;
618 ProxyClient::~ProxyClient()
620 delete render_engine;
625 void ProxyClient::process_package(LoadPackage *ptr)
627 if( proxy_render->failed ) return;
628 if( proxy_render->is_canceled() ) return;
630 EDL *edl = mwindow->edl;
631 Preferences *preferences = mwindow->preferences;
632 ProxyPackage *package = (ProxyPackage*)ptr;
633 Indexable *orig = package->orig_idxbl;
634 Asset *proxy = package->proxy_asset;
635 //printf("%s %s\n", orig->path, proxy->path);
636 VRender *vrender = 0;
637 int jobs = proxy_render->needed_proxies.size();
638 int processors = preferences->project_smp / jobs + 1, result = 0;
640 // each cpu should process at least about 1 MB, or it thrashes
641 int size = edl->session->output_w * edl->session->output_h * 4;
642 int cpus = size / 0x100000 + 1;
643 if( processors > cpus ) processors = cpus;
645 if( orig->is_asset ) {
647 src_file->set_processors(processors);
648 src_file->set_preload(edl->session->playback_preload);
649 src_file->set_subtitle(edl->session->decode_subtitles ?
650 edl->session->subtitle_number : -1);
651 src_file->set_interpolate_raw(edl->session->interpolate_raw);
652 src_file->set_white_balance_raw(edl->session->white_balance_raw);
653 if( src_file->open_file(preferences, (Asset*)orig, 1, 0) != FILE_OK )
657 TransportCommand command;
658 command.command = CURRENT_FRAME;
659 command.get_edl()->copy_all((EDL *)orig);
660 command.change_type = CHANGE_ALL;
661 command.realtime = 0;
662 render_engine = new RenderEngine(0, preferences, 0, 0);
663 render_engine->set_vcache(video_cache = new CICache(preferences));
664 render_engine->arm_command(&command);
665 if( !(vrender = render_engine->vrender) )
669 // go to the next asset if the reader fails
670 // proxy_render->failed = 1;
675 dst_file.set_processors(processors);
676 result = dst_file.open_file(preferences, proxy, 0, 1);
678 proxy_render->failed = 1;
679 ::remove(proxy->path);
683 dst_file.start_video_thread(1, edl->session->color_model,
684 processors > 1 ? 2 : 1, 0);
686 int src_w = orig->get_w(), src_h = orig->get_h();
687 VFrame src_frame(src_w,src_h, edl->session->color_model);
689 OverlayFrame scaler(processors);
690 int64_t video_length = orig->get_video_frames();
691 if( video_length < 0 ) video_length = 1;
693 for( int64_t i=0; i<video_length &&
694 !proxy_render->failed && !proxy_render->is_canceled(); ++i ) {
695 if( orig->is_asset ) {
696 src_file->set_video_position(i, 0);
697 result = src_file->read_frame(&src_frame);
700 result = vrender->process_buffer(&src_frame, i, 0);
701 //printf("result=%d\n", result);
704 // go to the next asset if the reader fails
705 // proxy_render->failed = 1;
709 // have to write after getting the video buffer or it locks up
710 VFrame ***dst_frames = dst_file.get_video_buffer();
711 VFrame *dst_frame = dst_frames[0][0];
712 int dst_w = dst_frame->get_w(), dst_h = dst_frame->get_h();
713 scaler.overlay(dst_frame, &src_frame,
714 0,0, src_w,src_h, 0,0, dst_w,dst_h,
715 1.0, TRANSFER_REPLACE, NEAREST_NEIGHBOR);
716 result = dst_file.write_video_buffer(1);
718 // only fail if the writer fails
719 proxy_render->failed = 1;
722 proxy_render->update_progress();
724 if( !proxy_render->failed && !proxy_render->is_canceled() ) {
725 Asset *asset = mwindow->edl->assets->update(proxy);
726 mwindow->mainindexes->add_next_asset(0, asset);
727 mwindow->mainindexes->start_build();
730 ::remove(proxy->path);
734 ProxyFarm::ProxyFarm(MWindow *mwindow, ProxyRender *proxy_render,
735 ArrayList<Indexable*> *orig_idxbls,
736 ArrayList<Asset*> *proxy_assets)
737 : LoadServer(MIN(mwindow->preferences->processors, proxy_assets->size()),
738 proxy_assets->size())
740 this->mwindow = mwindow;
741 this->proxy_render = proxy_render;
742 this->orig_idxbls = orig_idxbls;
743 this->proxy_assets = proxy_assets;
746 void ProxyFarm::init_packages()
748 for( int i = 0; i < get_total_packages(); i++ ) {
749 ProxyPackage *package = (ProxyPackage*)get_package(i);
750 package->proxy_asset = proxy_assets->get(i);
751 package->orig_idxbl = orig_idxbls->get(i);
755 LoadClient* ProxyFarm::new_client()
757 return new ProxyClient(mwindow, proxy_render, this);
760 LoadPackage* ProxyFarm::new_package()
762 return new ProxyPackage;
766 ProxyBeep::ProxyBeep(MWindow *mwindow)
769 this->mwindow = mwindow;
770 audio = new AudioDevice(mwindow);
775 ProxyBeep::~ProxyBeep()
781 void ProxyBeep::run()
784 int64_t bfrsz = BEEP_SAMPLE_RATE;
785 EDL *edl = mwindow->edl;
786 EDLSession *session = edl->session;
787 AudioOutConfig *aconfig = session->playback_config->aconfig;
788 audio->open_output(aconfig, BEEP_SAMPLE_RATE, bfrsz, channels, 0);
789 audio->start_playback();
791 double out0[bfrsz], out1[bfrsz], *out[2] = { out0, out1 };
792 const double two_pi = 2*M_PI;
793 int64_t audio_len = BEEP_SAMPLE_RATE * secs;
794 const double dt = two_pi * freq/BEEP_SAMPLE_RATE;
799 while( !interrupted ) {
800 int len = audio_len - audio_pos;
801 if( len <= 0 ) break;
802 if( len > bfrsz ) len = bfrsz;
804 for( int i=0; i<len; ++i,++k,th+=dt ) {
805 double t = th - two_pi;
807 out0[i] = out1[i] = sin(th) * gain;
809 audio->write_buffer(out, channels, len);
814 audio->set_last_buffer();
815 audio->stop_audio(interrupted ? 0 : 1);
821 void ProxyBeep::start()
823 if( running() ) return;
829 void ProxyBeep::stop(int wait)
831 if( running() && !interrupted ) {
833 audio->stop_audio(wait);
838 void ProxyBeep::tone(double freq, double secs, double gain)