cinelerra/audio1394.C

   1 #include "audio1394.h"
   2 #include "playbackconfig.h"
   3 #include "device1394input.h"
   4 #include "device1394output.h"
   5 #include "iec61883input.h"
   6 #include "iec61883output.h"
   7 #include "preferences.h"
   8 #include "recordconfig.h"
   9 #include "videoconfig.h"
  10 #include "videodevice.h"
  11
  12 #define SAMPLES_PER_FRAME 2048
  13
  14 Audio1394::Audio1394(AudioDevice *device)
  15  : AudioLowLevel(device)
  16 {
  17         initialize();
  18 }
  19
  20
  21 Audio1394::~Audio1394()
  22 {
  23         close_all();
  24 }
  25
  26 int Audio1394::initialize()
  27 {
  28         input_thread = 0;
  29         output_thread = 0;
  30         input_iec = 0;
  31         output_iec = 0;
  32 }
  33
  34 int Audio1394::open_input()
  35 {
  36         int result = 0;
  37         if(!input_thread && !input_iec)
  38         {
  39 // Lock the channels for the DV format
  40                 device->in_channels = 2;
  41                 device->in_bits = 16;
  42                 bytes_per_sample = device->in_channels * device->in_bits / 8;
  43
  44
  45                 if(device->driver == AUDIO_DV1394 ||
  46                         device->driver == AUDIO_1394)
  47                 {
  48                         input_thread = new Device1394Input;
  49                         result = input_thread->open(device->in_config->firewire_path,
  50                                 device->in_config->firewire_port,
  51                                 device->in_config->firewire_channel,
  52                                 30,
  53                                 device->in_channels,
  54                                 device->in_samplerate,
  55                                 device->in_bits,
  56                                 device->vconfig->w,
  57                                 device->vconfig->h);
  58                 }
  59                 else
  60                 {
  61                         input_iec = new IEC61883Input;
  62                         result = input_iec->open(device->in_config->firewire_port,
  63                                 device->in_config->firewire_channel,
  64                                 30,
  65                                 device->in_channels,
  66                                 device->in_samplerate,
  67                                 device->in_bits,
  68                                 device->vconfig->w,
  69                                 device->vconfig->h);
  70                 }
  71
  72
  73
  74
  75                 if(result)
  76                 {
  77                         delete input_thread;
  78                         input_thread = 0;
  79                         delete input_iec;
  80                         input_iec = 0;
  81                 }
  82         }
  83
  84         return result;
  85 }
  86
  87 int Audio1394::open_output()
  88 {
  89         if(!output_thread && !output_iec)
  90         {
  91 // Lock the channels for the DV format
  92                 device->out_channels = 2;
  93                 device->out_bits = 16;
  94                 bytes_per_sample = device->out_channels * device->out_bits / 8;
  95
  96
  97                 if(device->driver == AUDIO_DV1394)
  98                 {
  99                         output_thread = new Device1394Output(device);
 100                         output_thread->open(device->out_config->dv1394_path,
 101                                 device->out_config->dv1394_port,
 102                                 device->out_config->dv1394_channel,
 103                                 30,
 104                                 device->out_channels,
 105                                 device->out_bits,
 106                                 device->out_samplerate,
 107                                 device->out_config->dv1394_syt);
 108                 }
 109                 else
 110                 if(device->driver == AUDIO_1394)
 111                 {
 112                         output_thread = new Device1394Output(device);
 113                         output_thread->open(device->out_config->firewire_path,
 114                                 device->out_config->firewire_port,
 115                                 device->out_config->firewire_channel,
 116                                 30,
 117                                 device->out_channels,
 118                                 device->out_bits,
 119                                 device->out_samplerate,
 120                                 device->out_config->firewire_syt);
 121                 }
 122                 else
 123                 {
 124                         output_iec = new IEC61883Output(device);
 125                         output_iec->open(device->out_config->firewire_port,
 126                                 device->out_config->firewire_channel,
 127                                 30,
 128                                 device->out_channels,
 129                                 device->out_bits,
 130                                 device->out_samplerate,
 131                                 device->out_config->firewire_syt);
 132                 }
 133         }
 134         return 0;
 135 }
 136
 137 int Audio1394::close_all()
 138 {
 139         if(input_thread)
 140         {
 141                 delete input_thread;
 142         }
 143
 144         if(output_thread)
 145         {
 146                 delete output_thread;
 147         }
 148         delete input_iec;
 149         delete output_iec;
 150
 151         initialize();
 152         return 0;
 153 }
 154
 155
 156 int Audio1394::read_buffer(char *buffer, int bytes)
 157 {
 158         if(input_thread)
 159         {
 160                 input_thread->read_audio(buffer, bytes / bytes_per_sample);
 161         }
 162         else
 163         if(input_iec)
 164         {
 165                 input_iec->read_audio(buffer, bytes / bytes_per_sample);
 166         }
 167
 168         return 0;
 169 }
 170
 171 int Audio1394::write_buffer(char *buffer, int bytes)
 172 {
 173         if(output_thread)
 174                 output_thread->write_samples(buffer, bytes / bytes_per_sample);
 175         else
 176         if(output_iec)
 177                 output_iec->write_samples(buffer, bytes / bytes_per_sample);
 178         return 0;
 179 }
 180
 181 int64_t Audio1394::device_position()
 182 {
 183         if(output_thread)
 184                 return output_thread->get_audio_position();
 185         else
 186         if(output_iec)
 187                 return output_iec->get_audio_position();
 188         else
 189                 return 0;
 190 }
 191
 192
 193 int Audio1394::flush_device()
 194 {
 195         if(output_thread)
 196                 output_thread->flush();
 197         else
 198         if(output_iec)
 199                 output_iec->flush();
 200         return 0;
 201 }
 202
 203 int Audio1394::interrupt_playback()
 204 {
 205         if(output_thread)
 206                 output_thread->interrupt();
 207         else
 208         if(output_iec)
 209                 output_iec->interrupt();
 210         return 0;
 211 }