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 #ifdef HAVE_FIREWIRE
  23 #include "audio1394.h"
  24 #include "playbackconfig.h"
  25 #include "device1394input.h"
  26 #include "device1394output.h"
  27 #include "iec61883input.h"
  28 #include "iec61883output.h"
  29 #include "preferences.h"
  30 #include "recordconfig.h"
  31 #include "videoconfig.h"
  32 #include "videodevice.h"
  33
  34 #define SAMPLES_PER_FRAME 2048
  35
  36 Audio1394::Audio1394(AudioDevice *device)
  37  : AudioLowLevel(device)
  38 {
  39         initialize();
  40 }
  41
  42
  43 Audio1394::~Audio1394()
  44 {
  45         close_all();
  46 }
  47
  48 void Audio1394::initialize()
  49 {
  50         input_thread = 0;
  51         output_thread = 0;
  52         input_iec = 0;
  53         output_iec = 0;
  54 }
  55
  56 int Audio1394::open_input()
  57 {
  58         int result = 0;
  59         if(!input_thread && !input_iec)
  60         {
  61 // Lock the channels for the DV format
  62                 device->in_channels = 2;
  63                 device->in_bits = 16;
  64                 bytes_per_sample = device->in_channels * device->in_bits / 8;
  65
  66
  67                 if(device->idriver == AUDIO_DV1394 ||
  68                         device->idriver == AUDIO_1394)
  69                 {
  70                         input_thread = new Device1394Input;
  71                         result = input_thread->open(device->in_config->firewire_path,
  72                                 device->in_config->firewire_port,
  73                                 device->in_config->firewire_channel,
  74                                 30,
  75                                 device->in_channels,
  76                                 device->in_samplerate,
  77                                 device->in_bits,
  78                                 device->vconfig->w,
  79                                 device->vconfig->h);
  80                 }
  81                 else
  82                 {
  83                         input_iec = new IEC61883Input;
  84                         result = input_iec->open(device->in_config->firewire_port,
  85                                 device->in_config->firewire_channel,
  86                                 30,
  87                                 device->in_channels,
  88                                 device->in_samplerate,
  89                                 device->in_bits,
  90                                 device->vconfig->w,
  91                                 device->vconfig->h);
  92                 }
  93
  94
  95
  96
  97                 if(result)
  98                 {
  99                         delete input_thread;
 100                         input_thread = 0;
 101                         delete input_iec;
 102                         input_iec = 0;
 103                 }
 104         }
 105
 106         return result;
 107 }
 108
 109 int Audio1394::open_output()
 110 {
 111         if(!output_thread && !output_iec)
 112         {
 113 // Lock the channels for the DV format
 114                 device->out_channels = 2;
 115                 device->out_bits = 16;
 116                 bytes_per_sample = device->out_channels * device->out_bits / 8;
 117
 118
 119                 if(device->odriver == AUDIO_DV1394)
 120                 {
 121                         output_thread = new Device1394Output(device);
 122                         output_thread->open(device->out_config->dv1394_path,
 123                                 device->out_config->dv1394_port,
 124                                 device->out_config->dv1394_channel,
 125                                 30,
 126                                 device->out_channels,
 127                                 device->out_bits,
 128                                 device->out_samplerate,
 129                                 device->out_config->dv1394_syt);
 130                 }
 131                 else
 132                 if(device->odriver == AUDIO_1394)
 133                 {
 134                         output_thread = new Device1394Output(device);
 135                         output_thread->open(device->out_config->firewire_path,
 136                                 device->out_config->firewire_port,
 137                                 device->out_config->firewire_channel,
 138                                 30,
 139                                 device->out_channels,
 140                                 device->out_bits,
 141                                 device->out_samplerate,
 142                                 device->out_config->firewire_syt);
 143                 }
 144                 else
 145                 {
 146                         output_iec = new IEC61883Output(device);
 147                         output_iec->open(device->out_config->firewire_port,
 148                                 device->out_config->firewire_channel,
 149                                 30,
 150                                 device->out_channels,
 151                                 device->out_bits,
 152                                 device->out_samplerate,
 153                                 device->out_config->firewire_syt);
 154                 }
 155         }
 156         return 0;
 157 }
 158
 159 int Audio1394::close_all()
 160 {
 161         if(input_thread)
 162         {
 163                 delete input_thread;
 164         }
 165
 166         if(output_thread)
 167         {
 168                 delete output_thread;
 169         }
 170         delete input_iec;
 171         delete output_iec;
 172
 173         initialize();
 174         return 0;
 175 }
 176
 177
 178 int Audio1394::read_buffer(char *buffer, int bytes)
 179 {
 180         if(input_thread)
 181         {
 182                 input_thread->read_audio(buffer, bytes / bytes_per_sample);
 183         }
 184         else
 185         if(input_iec)
 186         {
 187                 input_iec->read_audio(buffer, bytes / bytes_per_sample);
 188         }
 189
 190         return 0;
 191 }
 192
 193 int Audio1394::write_buffer(char *buffer, int bytes)
 194 {
 195         if(output_thread)
 196                 output_thread->write_samples(buffer, bytes / bytes_per_sample);
 197         else
 198         if(output_iec)
 199                 output_iec->write_samples(buffer, bytes / bytes_per_sample);
 200         return 0;
 201 }
 202
 203 int64_t Audio1394::device_position()
 204 {
 205         if(output_thread)
 206                 return output_thread->get_audio_position();
 207         else
 208         if(output_iec)
 209                 return output_iec->get_audio_position();
 210         else
 211                 return 0;
 212 }
 213
 214
 215 int Audio1394::flush_device()
 216 {
 217         if(output_thread)
 218                 output_thread->flush();
 219         else
 220         if(output_iec)
 221                 output_iec->flush();
 222         return 0;
 223 }
 224
 225 int Audio1394::interrupt_playback()
 226 {
 227         if(output_thread)
 228                 output_thread->interrupt();
 229         else
 230         if(output_iec)
 231                 output_iec->interrupt();
 232         return 0;
 233 }
 234
 235 #endif