fixes for checkin 2 times ago
[goodguy/cinelerra.git] / cinelerra-5.1 / cinelerra / virtualaconsole.C
1
2 /*
3  * CINELERRA
4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
5  *
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.
10  *
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.
15  *
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
19  *
20  */
21
22 #include "aedit.h"
23 #include "amodule.h"
24 #include "arender.h"
25 #include "assets.h"
26 #include "atrack.h"
27 #include "audiodevice.h"
28 #include "bcsignals.h"
29 #include "condition.h"
30 #include "edit.h"
31 #include "edits.h"
32 #include "edl.h"
33 #include "edlsession.h"
34 #include "file.h"
35 #include "levelwindow.h"
36 #include "playabletracks.h"
37 #include "plugin.h"
38 #include "preferences.h"
39 #include "renderengine.h"
40 #include "samples.h"
41 #include "thread.h"
42 #include "tracks.h"
43 #include "transportque.h"
44 #include "virtualaconsole.h"
45 #include "virtualanode.h"
46 #include "virtualnode.h"
47
48
49 VirtualAConsole::VirtualAConsole(RenderEngine *renderengine, ARender *arender)
50  : VirtualConsole(renderengine, arender, TRACK_AUDIO)
51 {
52         this->arender = arender;
53         output_temp = 0;
54         output_allocation = 0;
55 }
56
57 VirtualAConsole::~VirtualAConsole()
58 {
59         if(output_temp) delete output_temp;
60 }
61
62
63 void VirtualAConsole::get_playable_tracks()
64 {
65         if(!playable_tracks)
66                 playable_tracks = new PlayableTracks(renderengine->get_edl(),
67                         commonrender->current_position,
68                         renderengine->command->get_direction(),
69                         TRACK_AUDIO,
70                         1);
71 }
72
73
74 VirtualNode* VirtualAConsole::new_entry_node(Track *track,
75         Module *module,
76         int track_number)
77 {
78         return new VirtualANode(renderengine,
79                 this, module, 0, track, 0);
80         return 0;
81 }
82
83
84
85 int VirtualAConsole::process_buffer(int64_t len,
86         int64_t start_position)
87 {
88         int result = 0;
89         const int debug = 0;
90 if(debug) printf("VirtualAConsole::process_buffer %d this=%p len=%jd\n",
91   __LINE__, this, len);
92
93
94 // clear output buffers
95         for(int i = 0; i < MAX_CHANNELS; i++)
96         {
97 // if(debug) printf("VirtualAConsole::process_buffer 2 %d %p %jd\n",
98 // i,
99 // arender->audio_out[i],
100 // len);
101
102                 if(arender->audio_out[i])
103                 {
104                         bzero(arender->audio_out[i]->get_data(), len * sizeof(double));
105                 }
106         }
107
108 // Create temporary output
109         if(output_temp && output_allocation < len)
110         {
111                 delete output_temp;
112                 output_temp = 0;
113         }
114
115         if(!output_temp)
116         {
117                 output_temp = new Samples(len);
118                 output_allocation = len;
119         }
120 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
121
122
123 // Reset plugin rendering status
124         reset_attachments();
125 //printf("VirtualAConsole::process_buffer 1 %p\n", output_temp);
126
127 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
128
129
130 // Render exit nodes
131         for(int i = 0; i < exit_nodes.total; i++)
132         {
133                 VirtualANode *node = (VirtualANode*)exit_nodes.values[i];
134                 Track *track = node->track;
135
136                 result |= node->render(output_temp,
137                         len,
138                         start_position + track->nudge,
139                         renderengine->get_edl()->session->sample_rate);
140         }
141 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
142
143
144
145 // get peaks and limit volume in the fragment
146         for(int i = 0; i < MAX_CHANNELS; i++)
147         {
148                 if(arender->audio_out[i])
149                 {
150                         double *current_buffer = arender->audio_out[i]->get_data();
151
152
153                         for(int j = 0; j < len; )
154                         {
155                                 int meter_render_end;
156 // Get length to test for meter and limit
157                                 if(renderengine->command->realtime)
158                                         meter_render_end = j + arender->meter_render_fragment;
159                                 else
160                                         meter_render_end = len;
161
162                                 if(meter_render_end > len)
163                                         meter_render_end =  len;
164
165                                 double peak = 0;
166                                 while( j < meter_render_end ) {
167 // Level history comes before clipping to get over status
168                                         double *sample = &current_buffer[j++];
169                                         if( fabs(*sample) > peak ) peak = fabs(*sample);
170 // Make the output device clip it
171 //                                      if(*sample > 1) *sample = 1;
172 //                                      else
173 //                                      if(*sample < -1) *sample = -1;
174                                 }
175
176                                 if( renderengine->command->realtime ) {
177                                         int direction = renderengine->command->get_direction();
178                                         int64_t pos = direction == PLAY_REVERSE ?
179                                                 start_position - j :
180                                                 start_position + j ;
181                                         arender->meter_history->set_peak(i, peak, pos);
182                                 }
183                         }
184                 }
185         }
186
187 if(debug) printf("VirtualAConsole::process_buffer %d\n", __LINE__);
188
189
190
191
192
193 // Pack channels, fix speed and send to device.
194         if(!renderengine->is_nested &&
195                 renderengine->command->realtime &&
196                 !interrupt)
197         {
198 // speed parameters
199                 float speed = renderengine->command->get_speed();
200 // length compensated for speed
201                 int real_output_len = 0;
202                 double *audio_out_packed[MAX_CHANNELS];
203                 int audio_channels = renderengine->get_edl()->session->audio_channels;
204
205                 for( int i=0; i<audio_channels; ++i )
206                         audio_out_packed[i] = arender->audio_out[i]->get_data();
207
208 // Time stretch the fragment to the real_output size
209                 for( int i=0; i<audio_channels; ++i ) {
210                         double *current_buffer = audio_out_packed[i];
211                         if( speed > 1 ) {  // buffer gets shorter
212                                 int in = 0, out = 0;
213                                 while( in < len ) {
214                                         int next = (out+1) * speed;
215                                         if( next > len) next = len;
216                                         double sample = current_buffer[in];
217                                         for( int i=in; ++i<next; ) sample += current_buffer[i];
218                                         int l = next - in;
219                                         if( l > 1 ) sample /= l;
220                                         current_buffer[out++] = sample;
221                                         in = next;
222                                 }
223                                 real_output_len = out;
224                         }
225                         else if( speed < 1 ) {  // buffer gets longer
226                                 real_output_len = len / speed;
227                                 int in = len, out = real_output_len;
228                                 while( in > 0 && out > 0 ) {
229                                         double sample = current_buffer[--in];
230                                         int next = in / speed;
231                                         while( out > next ) current_buffer[--out] = sample;
232                                 }
233                         }
234                         else
235                                 real_output_len = len;
236                 }
237
238 // Wait until video is ready
239                 if( arender->first_buffer ) {
240                         renderengine->first_frame_lock->lock("VirtualAConsole::process_buffer");
241                         arender->first_buffer = 0;
242                 }
243                 if( !renderengine->audio->get_interrupted() ) {
244                         renderengine->audio->write_buffer(audio_out_packed, audio_channels,
245                                 real_output_len);
246                 }
247
248                 if( renderengine->audio->get_interrupted() )
249                         interrupt = 1;
250         }
251
252         return result;
253 }
254
255
256 int VirtualAConsole::init_rendering(int duplicate)
257 {
258         return 0;
259 }
260
261
262 int VirtualAConsole::send_last_output_buffer()
263 {
264         renderengine->audio->set_last_buffer();
265         return 0;
266 }
267