cinelerra-5.1/cinelerra/device1394input.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 #include "condition.h"
  25 #include "device1394input.h"
  26 #include "ieee1394-ioctl.h"
  27 #include "mutex.h"
  28 #include "vframe.h"
  29 #include "video1394.h"
  30
  31 #include <errno.h>
  32 #include <fcntl.h>
  33 #include <sys/ioctl.h>
  34 #include <sys/mman.h>
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <unistd.h>
  38
  39 #define INPUT_SAMPLES 131072
  40 #define BUFFER_TIMEOUT 500000
  41
  42
  43 Device1394Input::Device1394Input()
  44  : Thread(1, 1, 0)
  45 {
  46         buffer = 0;
  47         buffer_valid = 0;
  48         input_buffer = 0;
  49         done = 0;
  50         total_buffers = 0;
  51         current_inbuffer = 0;
  52         current_outbuffer = 0;
  53         buffer_size = 0;
  54         audio_buffer = 0;
  55         audio_samples = 0;
  56         video_lock = 0;
  57         audio_lock = 0;
  58         buffer_lock = 0;
  59         decoder = 0;
  60         fd = -1;
  61 }
  62
  63 Device1394Input::~Device1394Input()
  64 {
  65 // Driver crashes if it isn't stopped before cancelling the thread.
  66 // May still crash during the cancel though.
  67
  68         if(Thread::running())
  69         {
  70                 done = 1;
  71                 Thread::cancel();
  72         }
  73         Thread::join();
  74
  75         if(buffer)
  76         {
  77                 for(int i = 0; i < total_buffers; i++)
  78                         delete [] buffer[i];
  79                 delete [] buffer;
  80                 delete [] buffer_valid;
  81         }
  82
  83         if(input_buffer)
  84                 munmap(input_buffer, total_buffers * buffer_size);
  85
  86         if(audio_buffer)
  87         {
  88                 delete [] audio_buffer;
  89         }
  90
  91         if(decoder)
  92         {
  93                 dv_delete(decoder);
  94         }
  95
  96         if(video_lock) delete video_lock;
  97         if(audio_lock) delete audio_lock;
  98         if(buffer_lock) delete buffer_lock;
  99         if(fd > 0)
 100         {
 101                 close(fd);
 102         }
 103 }
 104
 105 int Device1394Input::open(const char *path,
 106         int port,
 107         int channel,
 108         int length,
 109         int channels,
 110         int samplerate,
 111         int bits,
 112         int w,
 113         int h)
 114 {
 115         int result = 0;
 116         this->channel = channel;
 117         this->length = length;
 118         this->channels = channels;
 119         this->samplerate = samplerate;
 120         this->bits = bits;
 121         this->w = w;
 122         this->h = h;
 123         is_pal = (h == 576);
 124         buffer_size = is_pal ? DV_PAL_SIZE : DV_NTSC_SIZE;
 125         total_buffers = length;
 126
 127
 128 // Initialize grabbing
 129         if(fd < 0)
 130         {
 131                 if((fd = ::open(path, O_RDWR)) < 0)
 132                 {
 133                         printf("Device1394Input::open %s: %s\n", path, strerror(errno));
 134                 }
 135                 else
 136                 {
 137 #define CIP_N_NTSC   68000000
 138 #define CIP_D_NTSC 1068000000
 139
 140 #define CIP_N_PAL  1
 141 #define CIP_D_PAL 16
 142
 143                         struct dv1394_init init =
 144                         {
 145                                 api_version: DV1394_API_VERSION,
 146                                 channel: (unsigned int)channel,
 147                                 n_frames: (unsigned int)length,
 148                                 format: is_pal ? DV1394_PAL: DV1394_NTSC,
 149                                 cip_n: 0,
 150                                 cip_d: 0,
 151                                 syt_offset: 0
 152                         };
 153                         if(ioctl(fd, DV1394_IOC_INIT, &init) < 0)
 154                         {
 155                                 printf("Device1394Input::open DV1394_IOC_INIT: %s\n", strerror(errno));
 156                         }
 157
 158                         input_buffer = (unsigned char*)mmap(0,
 159                 length * buffer_size,
 160                 PROT_READ | PROT_WRITE,
 161                 MAP_SHARED,
 162                 fd,
 163                 0);
 164
 165                         if(ioctl(fd, DV1394_IOC_START_RECEIVE, 0) < 0)
 166                         {
 167                                 perror("Device1394Input::open DV1394_START_RECEIVE");
 168                         }
 169                 }
 170
 171
 172
 173                 buffer = new char*[total_buffers];
 174                 buffer_valid = new int[total_buffers];
 175                 bzero(buffer_valid, sizeof(int) * total_buffers);
 176                 for(int i = 0; i < total_buffers; i++)
 177                 {
 178                         buffer[i] = new char[DV_PAL_SIZE];
 179                 }
 180
 181
 182                 audio_buffer = new char[INPUT_SAMPLES * 2 * channels];
 183                 audio_lock = new Condition(0, "Device1394Input::audio_lock");
 184                 video_lock = new Condition(0, "Device1394Input::video_lock");
 185                 buffer_lock = new Mutex("Device1394Input::buffer_lock");
 186
 187                 decoder = dv_new();
 188
 189                 Thread::start();
 190         }
 191         return result;
 192 }
 193
 194 void Device1394Input::run()
 195 {
 196         while(!done)
 197         {
 198 // Wait for frame to arrive
 199                 struct dv1394_status status;
 200 printf("Device1394Input::run %d done=%d\n", __LINE__, done);
 201
 202                 Thread::enable_cancel();
 203                 if(ioctl(fd, DV1394_IOC_WAIT_FRAMES, 1))
 204                 {
 205                         perror("Device1394Input::run DV1394_IOC_WAIT_FRAMES");
 206                         sleep(1);
 207                 }
 208                 else
 209                 if(ioctl(fd, DV1394_IOC_GET_STATUS, &status))
 210                 {
 211                         perror("Device1394Input::run DV1394_IOC_GET_STATUS");
 212                 }
 213                 Thread::disable_cancel();
 214
 215
 216
 217                 buffer_lock->lock("Device1394Input::run 1");
 218
 219                 int nframes = status.n_clear_frames;
 220                 for(int i = 0; i < nframes; i++)
 221                 {
 222 // Get a buffer to transfer to
 223                         char *dst = 0;
 224                         int is_overflow = 0;
 225                         if(!buffer_valid[current_inbuffer])
 226                                 dst = buffer[current_inbuffer];
 227                         else
 228                                 is_overflow = 1;
 229
 230                         char *src = (char*)(input_buffer + buffer_size * status.first_clear_frame);
 231 // static FILE *test = 0;
 232 // if(!test) test = fopen("/tmp/test", "w");
 233 // fwrite(src, buffer_size, 1, test);
 234
 235 // Export the video
 236                         if(dst)
 237                         {
 238                                 memcpy(dst, src, buffer_size);
 239                                 buffer_valid[current_inbuffer] = 1;
 240                                 video_lock->unlock();
 241                         }
 242
 243
 244 // Extract the audio
 245                         if(audio_samples < INPUT_SAMPLES - 2048)
 246                         {
 247                                 int audio_result = dv_read_audio(decoder,
 248                                         (unsigned char*)audio_buffer +
 249                                                 audio_samples * 2 * 2,
 250                                         (unsigned char*)src,
 251                                         buffer_size,
 252                                         channels,
 253                                         bits);
 254                                 int real_freq = decoder->decoder->audio->frequency;
 255                                 if (real_freq == 32000)
 256                                 {
 257 // do in-place _FAST_ && _SIMPLE_ upsampling to 48khz
 258 // i also think user should get a warning that his material is effectively 32khz
 259 // we take 16bit samples for both channels in one 32bit int
 260                                         int *twosample = (int*) (audio_buffer + audio_samples * 2 * 2);
 261                                         int from = audio_result - 1;
 262                                         int new_result = audio_result * 48000 / real_freq;
 263                                         for (int to = new_result - 1; to >=0; to--)
 264                                         {
 265                                                 if ((to % 3) == 0 || (to % 3) == 1) from --;
 266                                                 twosample[to] = twosample[from];
 267                                         }
 268                                         audio_result = new_result;
 269                                 }
 270
 271
 272                                 audio_samples += audio_result;
 273
 274 // Export the audio
 275                                 audio_lock->unlock();
 276                         }
 277
 278 // Advance buffer
 279                         if(!is_overflow)
 280                                 increment_counter(&current_inbuffer);
 281
 282
 283                         Thread::enable_cancel();
 284                         if(ioctl(fd, DV1394_IOC_RECEIVE_FRAMES, 1))
 285                         {
 286                                 perror("Device1394Input::run DV1394_IOC_RECEIVE_FRAMES");
 287                         }
 288
 289                         if(ioctl(fd, DV1394_IOC_GET_STATUS, &status))
 290                         {
 291                                 perror("Device1394Input::run DV1394_IOC_GET_STATUS");
 292                         }
 293                         Thread::disable_cancel();
 294                 }
 295
 296                 buffer_lock->unlock();
 297         }
 298 }
 299
 300 void Device1394Input::increment_counter(int *counter)
 301 {
 302         (*counter)++;
 303         if(*counter >= total_buffers) *counter = 0;
 304 }
 305
 306 void Device1394Input::decrement_counter(int *counter)
 307 {
 308         (*counter)--;
 309         if(*counter < 0) *counter = total_buffers - 1;
 310 }
 311
 312
 313
 314 int Device1394Input::read_video(VFrame *data)
 315 {
 316         int result = 0;
 317
 318 // Take over buffer table
 319         buffer_lock->lock("Device1394Input::read_video 1");
 320 // Wait for buffer with timeout
 321         while(!buffer_valid[current_outbuffer] && !result)
 322         {
 323                 buffer_lock->unlock();
 324                 result = video_lock->timed_lock(BUFFER_TIMEOUT, "Device1394Input::read_video 2");
 325                 buffer_lock->lock("Device1394Input::read_video 3");
 326         }
 327
 328 // Copy frame
 329         if(buffer_valid[current_outbuffer])
 330         {
 331                 data->allocate_compressed_data(buffer_size);
 332                 data->set_compressed_size(buffer_size);
 333                 memcpy(data->get_data(), buffer[current_outbuffer], buffer_size);
 334                 buffer_valid[current_outbuffer] = 0;
 335                 increment_counter(&current_outbuffer);
 336         }
 337
 338         buffer_lock->unlock();
 339         return result;
 340 }
 341
 342
 343
 344
 345 int Device1394Input::read_audio(char *data, int samples)
 346 {
 347         int result = 0;
 348         int timeout = (int64_t)samples * (int64_t)1000000 * (int64_t)2 / (int64_t)samplerate;
 349         if(timeout < 500000) timeout = 500000;
 350
 351 // Take over buffer table
 352         buffer_lock->lock("Device1394Input::read_audio 1");
 353 // Wait for buffer with timeout
 354         while(audio_samples < samples && !result)
 355         {
 356                 buffer_lock->unlock();
 357                 result = audio_lock->timed_lock(timeout, "Device1394Input::read_audio 2");
 358                 buffer_lock->lock("Device1394Input::read_audio 3");
 359         }
 360 //printf("Device1394Input::read_audio 1 %d %d\n", result, timeout);
 361
 362         if(audio_samples >= samples)
 363         {
 364                 memcpy(data, audio_buffer, samples * bits * channels / 8);
 365                 memcpy(audio_buffer,
 366                         audio_buffer + samples * bits * channels / 8,
 367                         (audio_samples - samples) * bits * channels / 8);
 368                 audio_samples -= samples;
 369         }
 370 //printf("Device1394Input::read_audio 100\n");
 371         buffer_lock->unlock();
 372         return result;
 373 }
 374
 375 #endif