cinelerra-5.0/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
  24
  25
  26
  27
  28 #include "audio1394.h"
  29 #include "playbackconfig.h"
  30 #include "device1394input.h"
  31 #include "device1394output.h"
  32 #include "iec61883input.h"
  33 #include "iec61883output.h"
  34 #include "preferences.h"
  35 #include "recordconfig.h"
  36 #include "videoconfig.h"
  37 #include "videodevice.h"
  38
  39 #define SAMPLES_PER_FRAME 2048
  40
  41 Audio1394::Audio1394(AudioDevice *device)
  42  : AudioLowLevel(device)
  43 {
  44         initialize();
  45 }
  46
  47
  48 Audio1394::~Audio1394()
  49 {
  50         close_all();
  51 }
  52
  53 int Audio1394::initialize()
  54 {
  55         input_thread = 0;
  56         output_thread = 0;
  57         input_iec = 0;
  58         output_iec = 0;
  59         return 0;
  60 }
  61
  62 int Audio1394::open_input()
  63 {
  64         int result = 0;
  65         if(!input_thread && !input_iec)
  66         {
  67 // Lock the channels for the DV format
  68                 device->in_channels = 2;
  69                 device->in_bits = 16;
  70                 bytes_per_sample = device->in_channels * device->in_bits / 8;
  71
  72
  73                 if(device->idriver == AUDIO_DV1394 ||
  74                         device->idriver == AUDIO_1394)
  75                 {
  76                         input_thread = new Device1394Input;
  77                         result = input_thread->open(device->in_config->firewire_port,
  78                                 device->in_config->firewire_channel,
  79                                 30,
  80                                 device->in_channels,
  81                                 device->in_samplerate,
  82                                 device->in_bits,
  83                                 device->vconfig->w,
  84                                 device->vconfig->h);
  85                 }
  86                 else
  87                 {
  88                         input_iec = new IEC61883Input;
  89                         result = input_iec->open(device->in_config->firewire_port,
  90                                 device->in_config->firewire_channel,
  91                                 30,
  92                                 device->in_channels,
  93                                 device->in_samplerate,
  94                                 device->in_bits,
  95                                 device->vconfig->w,
  96                                 device->vconfig->h);
  97                 }
  98
  99
 100
 101
 102                 if(result)
 103                 {
 104                         delete input_thread;
 105                         input_thread = 0;
 106                         delete input_iec;
 107                         input_iec = 0;
 108                 }
 109         }
 110
 111         return result;
 112 }
 113
 114 int Audio1394::open_output()
 115 {
 116         if(!output_thread && !output_iec)
 117         {
 118 // Lock the channels for the DV format
 119                 device->out_channels = 2;
 120                 device->out_bits = 16;
 121                 bytes_per_sample = device->out_channels * device->out_bits / 8;
 122
 123
 124                 if(device->odriver == AUDIO_DV1394)
 125                 {
 126                         output_thread = new Device1394Output(device);
 127                         output_thread->open(device->out_config->dv1394_path,
 128                                 device->out_config->dv1394_port,
 129                                 device->out_config->dv1394_channel,
 130                                 30,
 131                                 device->out_channels,
 132                                 device->out_bits,
 133                                 device->out_samplerate,
 134                                 device->out_config->dv1394_syt);
 135                 }
 136                 else
 137                 if(device->odriver == AUDIO_1394)
 138                 {
 139                         output_thread = new Device1394Output(device);
 140                         output_thread->open(device->out_config->firewire_path,
 141                                 device->out_config->firewire_port,
 142                                 device->out_config->firewire_channel,
 143                                 30,
 144                                 device->out_channels,
 145                                 device->out_bits,
 146                                 device->out_samplerate,
 147                                 device->out_config->firewire_syt);
 148                 }
 149                 else
 150                 {
 151                         output_iec = new IEC61883Output(device);
 152                         output_iec->open(device->out_config->firewire_port,
 153                                 device->out_config->firewire_channel,
 154                                 30,
 155                                 device->out_channels,
 156                                 device->out_bits,
 157                                 device->out_samplerate,
 158                                 device->out_config->firewire_syt);
 159                 }
 160         }
 161         return 0;
 162 }
 163
 164 int Audio1394::close_all()
 165 {
 166         if(input_thread)
 167         {
 168                 delete input_thread;
 169         }
 170
 171         if(output_thread)
 172         {
 173                 delete output_thread;
 174         }
 175         delete input_iec;
 176         delete output_iec;
 177
 178         initialize();
 179         return 0;
 180 }
 181
 182
 183 int Audio1394::read_buffer(char *buffer, int bytes)
 184 {
 185         if(input_thread)
 186         {
 187                 input_thread->read_audio(buffer, bytes / bytes_per_sample);
 188         }
 189         else
 190         if(input_iec)
 191         {
 192                 input_iec->read_audio(buffer, bytes / bytes_per_sample);
 193         }
 194
 195         return 0;
 196 }
 197
 198 int Audio1394::write_buffer(char *buffer, int bytes)
 199 {
 200         if(output_thread)
 201                 output_thread->write_samples(buffer, bytes / bytes_per_sample);
 202         else
 203         if(output_iec)
 204                 output_iec->write_samples(buffer, bytes / bytes_per_sample);
 205         return 0;
 206 }
 207
 208 int64_t Audio1394::device_position()
 209 {
 210         if(output_thread)
 211                 return output_thread->get_audio_position();
 212         else
 213         if(output_iec)
 214                 return output_iec->get_audio_position();
 215         else
 216                 return 0;
 217 }
 218
 219
 220 int Audio1394::flush_device()
 221 {
 222         if(output_thread)
 223                 output_thread->flush();
 224         else
 225         if(output_iec)
 226                 output_iec->flush();
 227         return 0;
 228 }
 229
 230 int Audio1394::interrupt_playback()
 231 {
 232         if(output_thread)
 233                 output_thread->interrupt();
 234         else
 235         if(output_iec)
 236                 output_iec->interrupt();
 237         return 0;
 238 }
 239
 240
 241
 242 #endif