cinelerra-5.1/cinelerra/audio1394.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 "audio1394.h"
  23 #include "playbackconfig.h"
  24 #include "device1394input.h"
  25 #include "device1394output.h"
  26 #include "iec61883input.h"
  27 #include "iec61883output.h"
  28 #include "preferences.h"
  29 #include "recordconfig.h"
  30 #include "videoconfig.h"
  31 #include "videodevice.h"
  32
  33 #define SAMPLES_PER_FRAME 2048
  34
  35 Audio1394::Audio1394(AudioDevice *device)
  36  : AudioLowLevel(device)
  37 {
  38         initialize();
  39 }
  40
  41
  42 Audio1394::~Audio1394()
  43 {
  44         close_all();
  45 }
  46
  47 void Audio1394::initialize()
  48 {
  49         input_thread = 0;
  50         output_thread = 0;
  51         input_iec = 0;
  52         output_iec = 0;
  53 }
  54
  55 int Audio1394::open_input()
  56 {
  57         int result = 0;
  58         if(!input_thread && !input_iec)
  59         {
  60 // Lock the channels for the DV format
  61                 device->in_channels = 2;
  62                 device->in_bits = 16;
  63                 bytes_per_sample = device->in_channels * device->in_bits / 8;
  64
  65
  66                 if(device->idriver == AUDIO_DV1394 ||
  67                         device->idriver == AUDIO_1394)
  68                 {
  69                         input_thread = new Device1394Input;
  70                         result = input_thread->open(device->in_config->firewire_path,
  71                                 device->in_config->firewire_port,
  72                                 device->in_config->firewire_channel,
  73                                 30,
  74                                 device->in_channels,
  75                                 device->in_samplerate,
  76                                 device->in_bits,
  77                                 device->vconfig->w,
  78                                 device->vconfig->h);
  79                 }
  80                 else
  81                 {
  82                         input_iec = new IEC61883Input;
  83                         result = input_iec->open(device->in_config->firewire_port,
  84                                 device->in_config->firewire_channel,
  85                                 30,
  86                                 device->in_channels,
  87                                 device->in_samplerate,
  88                                 device->in_bits,
  89                                 device->vconfig->w,
  90                                 device->vconfig->h);
  91                 }
  92
  93
  94
  95
  96                 if(result)
  97                 {
  98                         delete input_thread;
  99                         input_thread = 0;
 100                         delete input_iec;
 101                         input_iec = 0;
 102                 }
 103         }
 104
 105         return result;
 106 }
 107
 108 int Audio1394::open_output()
 109 {
 110         if(!output_thread && !output_iec)
 111         {
 112 // Lock the channels for the DV format
 113                 device->out_channels = 2;
 114                 device->out_bits = 16;
 115                 bytes_per_sample = device->out_channels * device->out_bits / 8;
 116
 117
 118                 if(device->odriver == AUDIO_DV1394)
 119                 {
 120                         output_thread = new Device1394Output(device);
 121                         output_thread->open(device->out_config->dv1394_path,
 122                                 device->out_config->dv1394_port,
 123                                 device->out_config->dv1394_channel,
 124                                 30,
 125                                 device->out_channels,
 126                                 device->out_bits,
 127                                 device->out_samplerate,
 128                                 device->out_config->dv1394_syt);
 129                 }
 130                 else
 131                 if(device->odriver == AUDIO_1394)
 132                 {
 133                         output_thread = new Device1394Output(device);
 134                         output_thread->open(device->out_config->firewire_path,
 135                                 device->out_config->firewire_port,
 136                                 device->out_config->firewire_channel,
 137                                 30,
 138                                 device->out_channels,
 139                                 device->out_bits,
 140                                 device->out_samplerate,
 141                                 device->out_config->firewire_syt);
 142                 }
 143                 else
 144                 {
 145                         output_iec = new IEC61883Output(device);
 146                         output_iec->open(device->out_config->firewire_port,
 147                                 device->out_config->firewire_channel,
 148                                 30,
 149                                 device->out_channels,
 150                                 device->out_bits,
 151                                 device->out_samplerate,
 152                                 device->out_config->firewire_syt);
 153                 }
 154         }
 155         return 0;
 156 }
 157
 158 int Audio1394::close_all()
 159 {
 160         if(input_thread)
 161         {
 162                 delete input_thread;
 163         }
 164
 165         if(output_thread)
 166         {
 167                 delete output_thread;
 168         }
 169         delete input_iec;
 170         delete output_iec;
 171
 172         initialize();
 173         return 0;
 174 }
 175
 176
 177 int Audio1394::read_buffer(char *buffer, int bytes)
 178 {
 179         if(input_thread)
 180         {
 181                 input_thread->read_audio(buffer, bytes / bytes_per_sample);
 182         }
 183         else
 184         if(input_iec)
 185         {
 186                 input_iec->read_audio(buffer, bytes / bytes_per_sample);
 187         }
 188
 189         return 0;
 190 }
 191
 192 int Audio1394::write_buffer(char *buffer, int bytes)
 193 {
 194         if(output_thread)
 195                 output_thread->write_samples(buffer, bytes / bytes_per_sample);
 196         else
 197         if(output_iec)
 198                 output_iec->write_samples(buffer, bytes / bytes_per_sample);
 199         return 0;
 200 }
 201
 202 int64_t Audio1394::device_position()
 203 {
 204         if(output_thread)
 205                 return output_thread->get_audio_position();
 206         else
 207         if(output_iec)
 208                 return output_iec->get_audio_position();
 209         else
 210                 return 0;
 211 }
 212
 213
 214 int Audio1394::flush_device()
 215 {
 216         if(output_thread)
 217                 output_thread->flush();
 218         else
 219         if(output_iec)
 220                 output_iec->flush();
 221         return 0;
 222 }
 223
 224 int Audio1394::interrupt_playback()
 225 {
 226         if(output_thread)
 227                 output_thread->interrupt();
 228         else
 229         if(output_iec)
 230                 output_iec->interrupt();
 231         return 0;
 232 }