cinelerra/audiooss.C

   1 #include "audioconfig.h"
   2 #include "audiodevice.h"
   3 #include "audiooss.h"
   4 #include "clip.h"
   5 #include "condition.h"
   6 #include "errno.h"
   7 #include "playbackconfig.h"
   8 #include "preferences.h"
   9 #include "recordconfig.h"
  10
  11 #include <string.h>
  12
  13 #ifdef HAVE_OSS
  14
  15 // These are only available in commercial OSS
  16
  17 #ifndef AFMT_S32_LE
  18 #define AFMT_S32_LE      0x00001000
  19 #define AFMT_S32_BE      0x00002000
  20 #endif
  21
  22
  23 // Synchronie multiple devices by using threads
  24
  25 OSSThread::OSSThread(AudioOSS *device)
  26  : Thread(1, 0, 0)
  27 {
  28         rd = 0;
  29         wr = 0;
  30         done = 0;
  31         this->device = device;
  32         input_lock = new Condition(0, "OSSThread::input_lock");
  33         output_lock = new Condition(1, "OSSThread::output_lock");
  34         read_lock = new Condition(0, "OSSThread::read_lock");
  35         write_lock = new Condition(0, "OSSThread::write_lock");
  36 }
  37
  38 OSSThread::~OSSThread()
  39 {
  40         done = 1;
  41         input_lock->unlock();
  42         Thread::join();
  43         delete input_lock;
  44         delete output_lock;
  45         delete read_lock;
  46         delete write_lock;
  47 }
  48
  49 void OSSThread::run()
  50 {
  51         while(!done)
  52         {
  53                 input_lock->lock("OSSThread::run 1");
  54                 if(rd)
  55                 {
  56                         int result = read(fd, data, bytes);
  57                         read_lock->unlock();
  58                 }
  59                 else
  60                 if(wr)
  61                 {
  62                         if(done) return;
  63
  64
  65                         Thread::enable_cancel();
  66                         write(fd, data, bytes);
  67                         Thread::disable_cancel();
  68
  69
  70                         if(done) return;
  71                         write_lock->unlock();
  72                 }
  73                 output_lock->unlock();
  74         }
  75 }
  76
  77 void OSSThread::write_data(int fd, unsigned char *data, int bytes)
  78 {
  79         output_lock->lock("OSSThread::write_data");
  80         wr = 1;
  81         rd = 0;
  82         this->data = data;
  83         this->bytes = bytes;
  84         this->fd = fd;
  85         input_lock->unlock();
  86 }
  87
  88 void OSSThread::read_data(int fd, unsigned char *data, int bytes)
  89 {
  90         output_lock->lock("OSSThread::read_data");
  91         wr = 0;
  92         rd = 1;
  93         this->data = data;
  94         this->bytes = bytes;
  95         this->fd = fd;
  96         input_lock->unlock();
  97 }
  98
  99 void OSSThread::wait_read()
 100 {
 101         read_lock->lock("OSSThread::wait_read");
 102 }
 103
 104 void OSSThread::wait_write()
 105 {
 106         write_lock->lock("OSSThread::wait_write");
 107 }
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119 AudioOSS::AudioOSS(AudioDevice *device)
 120  : AudioLowLevel(device)
 121 {
 122         for(int i = 0; i < MAXDEVICES; i++)
 123         {
 124                 dsp_in[i] = dsp_out[i] = dsp_duplex[i] = 0;
 125                 thread[i] = 0;
 126                 data[i] = 0;
 127                 data_allocated[i] = 0;
 128         }
 129 }
 130
 131 AudioOSS::~AudioOSS()
 132 {
 133 }
 134
 135 int AudioOSS::open_input()
 136 {
 137         device->in_bits = device->in_config->oss_in_bits;
 138 // 24 bits not available in OSS
 139         if(device->in_bits == 24) device->in_bits = 32;
 140
 141         for(int i = 0; i < MAXDEVICES; i++)
 142         {
 143                 if(device->in_config->oss_enable[i])
 144                 {
 145 //printf("AudioOSS::open_input 10\n");
 146                         dsp_in[i] = open(device->in_config->oss_in_device[i], O_RDONLY/* | O_NDELAY*/);
 147 //printf("AudioOSS::open_input 20\n");
 148                         if(dsp_in[i] < 0) fprintf(stderr, "AudioOSS::open_input %s: %s\n",
 149                                 device->in_config->oss_in_device[i],
 150                                 strerror(errno));
 151
 152                         int format = get_fmt(device->in_config->oss_in_bits);
 153                         int buffer_info = sizetofrag(device->in_samples,
 154                                 device->get_ichannels(),
 155                                 device->in_config->oss_in_bits);
 156
 157                         set_cloexec_flag(dsp_in[i], 1);
 158
 159 // For the ice1712 the buffer must be maximum or no space will be allocated.
 160                         if(device->driver == AUDIO_OSS_ENVY24) buffer_info = 0x7fff000f;
 161                         if(ioctl(dsp_in[i], SNDCTL_DSP_SETFRAGMENT, &buffer_info)) printf("SNDCTL_DSP_SETFRAGMENT failed.\n");
 162                         if(ioctl(dsp_in[i], SNDCTL_DSP_SETFMT, &format) < 0) printf("SNDCTL_DSP_SETFMT failed\n");
 163                         int channels = device->get_ichannels();
 164                         if(ioctl(dsp_in[i], SNDCTL_DSP_CHANNELS, &channels) < 0) printf("SNDCTL_DSP_CHANNELS failed\n");
 165                         if(ioctl(dsp_in[i], SNDCTL_DSP_SPEED, &device->in_samplerate) < 0) printf("SNDCTL_DSP_SPEED failed\n");
 166
 167                         audio_buf_info recinfo;
 168                         ioctl(dsp_in[i], SNDCTL_DSP_GETISPACE, &recinfo);
 169
 170 //printf("AudioOSS::open_input fragments=%d fragstotal=%d fragsize=%d bytes=%d\n",
 171 //      recinfo.fragments, recinfo.fragstotal, recinfo.fragsize, recinfo.bytes);
 172
 173                         thread[i] = new OSSThread(this);
 174                         thread[i]->start();
 175                 }
 176         }
 177         return 0;
 178 }
 179
 180 int AudioOSS::open_output()
 181 {
 182         device->out_bits = device->out_config->oss_out_bits;
 183 // OSS only supports 8, 16, and 32
 184         if(device->out_bits == 24) device->out_bits = 32;
 185
 186         for(int i = 0; i < MAXDEVICES; i++)
 187         {
 188                 if(device->out_config->oss_enable[i])
 189                 {
 190 // Linux 2.4.18 no longer supports allocating the maximum buffer size.
 191 // Need the shrink fragment size in preferences until it works.
 192                         dsp_out[i] =
 193                                 open(device->out_config->oss_out_device[i],
 194                                         O_WRONLY /*| O_NDELAY*/);
 195                         if(dsp_out[i] < 0) perror("AudioOSS::open_output");
 196
 197                         int format = get_fmt(device->out_config->oss_out_bits);
 198                         int buffer_info = sizetofrag(device->out_samples,
 199                                 device->get_ochannels(),
 200                                 device->out_config->oss_out_bits);
 201                         audio_buf_info playinfo;
 202
 203                         set_cloexec_flag(dsp_out[i], 1);
 204
 205 // For the ice1712 the buffer must be maximum or no space will be allocated.
 206                         if(device->driver == AUDIO_OSS_ENVY24) buffer_info = 0x7fff000f;
 207                         if(ioctl(dsp_out[i], SNDCTL_DSP_SETFRAGMENT, &buffer_info)) printf("SNDCTL_DSP_SETFRAGMENT 2 failed.\n");
 208                         if(ioctl(dsp_out[i], SNDCTL_DSP_SETFMT, &format) < 0) printf("SNDCTL_DSP_SETFMT 2 failed\n");
 209                         int channels = device->get_ochannels();
 210                         if(ioctl(dsp_out[i], SNDCTL_DSP_CHANNELS, &channels) < 0) printf("SNDCTL_DSP_CHANNELS 2 failed\n");
 211                         if(ioctl(dsp_out[i], SNDCTL_DSP_SPEED, &device->out_samplerate) < 0) printf("SNDCTL_DSP_SPEED 2 failed\n");
 212                         ioctl(dsp_out[i], SNDCTL_DSP_GETOSPACE, &playinfo);
 213 // printf("AudioOSS::open_output fragments=%d fragstotal=%d fragsize=%d bytes=%d\n",
 214 // playinfo.fragments, playinfo.fragstotal, playinfo.fragsize, playinfo.bytes);
 215                         device->device_buffer = playinfo.bytes;
 216                         thread[i] = new OSSThread(this);
 217                         thread[i]->start();
 218                 }
 219         }
 220         return 0;
 221 }
 222
 223 int AudioOSS::open_duplex()
 224 {
 225         device->duplex_bits = device->out_config->oss_out_bits;
 226         if(device->duplex_bits == 24) device->duplex_bits = 32;
 227
 228         for(int i = 0; i < MAXDEVICES; i++)
 229         {
 230                 if(device->out_config->oss_enable[i])
 231                 {
 232                         dsp_duplex[i] = open(device->out_config->oss_out_device[i], O_RDWR/* | O_NDELAY*/);
 233                         if(dsp_duplex[i] < 0) perror("AudioOSS::open_duplex");
 234
 235                         int format = get_fmt(device->out_config->oss_out_bits);
 236                         int buffer_info = sizetofrag(device->duplex_samples,
 237                                 device->get_ochannels(),
 238                                 device->out_config->oss_out_bits);
 239                         audio_buf_info playinfo;
 240
 241                         set_cloexec_flag(dsp_duplex[i], 1);
 242
 243 // For the ice1712 the buffer must be maximum or no space will be allocated.
 244                         if(device->driver == AUDIO_OSS_ENVY24) buffer_info = 0x7fff000f;
 245                         if(ioctl(dsp_duplex[i], SNDCTL_DSP_SETFRAGMENT, &buffer_info)) printf("SNDCTL_DSP_SETFRAGMENT failed.\n");
 246                         if(ioctl(dsp_duplex[i], SNDCTL_DSP_SETDUPLEX, 1) == -1) printf("SNDCTL_DSP_SETDUPLEX failed\n");
 247                         if(ioctl(dsp_duplex[i], SNDCTL_DSP_SETFMT, &format) < 0) printf("SNDCTL_DSP_SETFMT failed\n");
 248                         int channels = device->get_ochannels();
 249                         if(ioctl(dsp_duplex[i], SNDCTL_DSP_CHANNELS, &channels) < 0) printf("SNDCTL_DSP_CHANNELS failed\n");
 250                         if(ioctl(dsp_duplex[i], SNDCTL_DSP_SPEED, &device->duplex_samplerate) < 0) printf("SNDCTL_DSP_SPEED failed\n");
 251                         ioctl(dsp_duplex[i], SNDCTL_DSP_GETOSPACE, &playinfo);
 252                         device->device_buffer = playinfo.bytes;
 253                         thread[i] = new OSSThread(this);
 254                         thread[i]->start();
 255                 }
 256         }
 257         return 0;
 258 }
 259
 260 int AudioOSS::sizetofrag(int samples, int channels, int bits)
 261 {
 262         int testfrag = 2, fragsize = 1;
 263         samples *= channels * bits / 8;
 264         while(testfrag < samples)
 265         {
 266                 fragsize++;
 267                 testfrag *= 2;
 268         }
 269 //printf("AudioOSS::sizetofrag %d\n", fragsize);
 270         return (4 << 16) | fragsize;
 271 }
 272
 273 int AudioOSS::get_fmt(int bits)
 274 {
 275         switch(bits)
 276         {
 277                 case 32: return AFMT_S32_LE; break;
 278                 case 16: return AFMT_S16_LE; break;
 279                 case 8:  return AFMT_S8;  break;
 280         }
 281         return AFMT_S16_LE;
 282 }
 283
 284
 285 int AudioOSS::close_all()
 286 {
 287 //printf("AudioOSS::close_all 1\n");
 288         for(int i = 0; i < MAXDEVICES; i++)
 289         {
 290                 if(dsp_in[i])
 291                 {
 292                         ioctl(dsp_in[i], SNDCTL_DSP_RESET, 0);
 293                         close(dsp_in[i]);
 294                 }
 295
 296                 if(dsp_out[i])
 297                 {
 298 //printf("AudioOSS::close_all 2\n");
 299                         ioctl(dsp_out[i], SNDCTL_DSP_RESET, 0);
 300                         close(dsp_out[i]);
 301                 }
 302
 303                 if(dsp_duplex[i])
 304                 {
 305                         ioctl(dsp_duplex[i], SNDCTL_DSP_RESET, 0);
 306                         close(dsp_duplex[i]);
 307                 }
 308
 309                 if(thread[i]) delete thread[i];
 310                 if(data[i]) delete [] data[i];
 311         }
 312         return 0;
 313 }
 314
 315 int AudioOSS::set_cloexec_flag(int desc, int value)
 316 {
 317         int oldflags = fcntl (desc, F_GETFD, 0);
 318         if (oldflags < 0) return oldflags;
 319         if(value != 0)
 320                 oldflags |= FD_CLOEXEC;
 321         else
 322                 oldflags &= ~FD_CLOEXEC;
 323         return fcntl(desc, F_SETFD, oldflags);
 324 }
 325
 326 int64_t AudioOSS::device_position()
 327 {
 328         count_info info;
 329         if(!ioctl(get_output(0), SNDCTL_DSP_GETOPTR, &info))
 330         {
 331 //printf("AudioOSS::device_position %d %d %d\n", info.bytes, device->get_obits(), device->get_ochannels());
 332 // workaround for ALSA OSS emulation driver's bug
 333 // the problem is that if the first write to sound device was not full lenght fragment then
 334 // _GETOPTR returns insanely large numbers at first moments of play
 335                 if (info.bytes > 2100000000)
 336                         return 0;
 337                 else
 338                         return info.bytes /
 339                                 (device->get_obits() / 8) /
 340                                 device->get_ochannels();
 341         }
 342         return 0;
 343 }
 344
 345 int AudioOSS::interrupt_playback()
 346 {
 347 //printf("AudioOSS::interrupt_playback 1\n");
 348         for(int i = 0; i < MAXDEVICES; i++)
 349         {
 350                 if(thread[i])
 351                 {
 352                         thread[i]->cancel();
 353                         thread[i]->write_lock->unlock();
 354                 }
 355         }
 356 //printf("AudioOSS::interrupt_playback 100\n");
 357         return 0;
 358 }
 359
 360 int AudioOSS::read_buffer(char *buffer, int bytes)
 361 {
 362         int sample_size = device->get_ibits() / 8;
 363         int out_frame_size = device->get_ichannels() * sample_size;
 364         int samples = bytes / out_frame_size;
 365
 366 //printf("AudioOSS::read_buffer 1 %d\n", bytes);
 367 // Fill temp buffers
 368         for(int i = 0; i < MAXDEVICES; i++)
 369         {
 370                 if(thread[i])
 371                 {
 372                         int in_frame_size = device->get_ichannels() * sample_size;
 373
 374                         if(data[i] && data_allocated[i] < bytes)
 375                         {
 376                                 delete [] data[i];
 377                                 data[i] = 0;
 378                         }
 379                         if(!data[i])
 380                         {
 381                                 data[i] = new unsigned char[bytes];
 382                                 data_allocated[i] = bytes;
 383                         }
 384
 385                         thread[i]->read_data(get_input(i), data[i], samples * in_frame_size);
 386                 }
 387         }
 388
 389 //printf("AudioOSS::read_buffer 1 %d\n", device->get_ibits());
 390         for(int i = 0, out_channel = 0; i < MAXDEVICES; i++)
 391         {
 392                 if(thread[i])
 393                 {
 394                         thread[i]->wait_read();
 395
 396                         for(int in_channel = 0;
 397                                 in_channel < device->get_ichannels();
 398                                 in_channel++)
 399                         {
 400                                 int in_frame_size = device->get_ichannels() * sample_size;
 401
 402                                 for(int k = 0; k < samples; k++)
 403                                 {
 404                                         for(int l = 0;
 405                                                 l < sample_size;
 406                                                 l++)
 407                                         {
 408                                                 buffer[out_channel * sample_size + k * out_frame_size + l] =
 409                                                         data[i][in_channel * sample_size + k * in_frame_size + l];
 410                                         }
 411                                 }
 412                                 out_channel++;
 413                         }
 414                 }
 415         }
 416 //printf("AudioOSS::read_buffer 2\n");
 417         return 0;
 418 }
 419
 420 int AudioOSS::write_buffer(char *buffer, int bytes)
 421 {
 422         int sample_size = device->get_obits() / 8;
 423         int in_frame_size = device->get_ochannels() * sample_size;
 424         int samples = bytes / in_frame_size;
 425
 426         for(int i = 0, in_channel = 0; i < MAXDEVICES; i++)
 427         {
 428                 if(thread[i])
 429                 {
 430                         int out_frame_size = device->get_ochannels() * sample_size;
 431                         if(data[i] && data_allocated[i] < bytes)
 432                         {
 433                                 delete [] data[i];
 434                                 data[i] = 0;
 435                         }
 436                         if(!data[i])
 437                         {
 438                                 data[i] = new unsigned char[bytes];
 439                                 data_allocated[i] = bytes;
 440                         }
 441
 442                         for(int out_channel = 0;
 443                                 out_channel < device->get_ochannels();
 444                                 out_channel++)
 445                         {
 446
 447                                 for(int k = 0; k < samples; k++)
 448                                 {
 449                                         for(int l = 0; l < sample_size; l++)
 450                                         {
 451                                                 data[i][out_channel * sample_size + k * out_frame_size + l] =
 452                                                         buffer[in_channel * sample_size + k * in_frame_size + l];
 453                                         }
 454                                 }
 455                                 in_channel++;
 456                         }
 457
 458                         thread[i]->write_data(get_output(i), data[i], samples * out_frame_size);
 459                 }
 460         }
 461         for(int i = 0, in_channel = 0; i < MAXDEVICES; i++)
 462         {
 463                 if(thread[i])
 464                 {
 465                         thread[i]->wait_write();
 466                 }
 467         }
 468         return 0;
 469 }
 470
 471 int AudioOSS::flush_device()
 472 {
 473         for(int i = 0; i < MAXDEVICES; i++)
 474                 if(thread[i]) ioctl(get_output(i), SNDCTL_DSP_SYNC, 0);
 475         return 0;
 476 }
 477
 478 int AudioOSS::get_output(int number)
 479 {
 480         if(device->w) return dsp_out[number];
 481         else if(device->d) return dsp_duplex[number];
 482         return 0;
 483 }
 484
 485 int AudioOSS::get_input(int number)
 486 {
 487         if(device->r) return dsp_in[number];
 488         else if(device->d) return dsp_duplex[number];
 489         return 0;
 490 }
 491
 492 #endif // HAVE_OSS
 493 /*
 494 //      Local Variables:
 495 //      mode: C++
 496 //      c-file-style: "linux"
 497 //      End:
 498 */