cinelerra-5.0/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 #include "condition.h"
  23 #include "device1394input.h"
  24 #include "ieee1394-ioctl.h"
  25 #include "mutex.h"
  26 #include "vframe.h"
  27 #include "video1394.h"
  28
  29 #include <errno.h>
  30 #include <fcntl.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/mman.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <unistd.h>
  36
  37 #define INPUT_SAMPLES 131072
  38 #define BUFFER_TIMEOUT 500000
  39
  40
  41 Device1394Input::Device1394Input()
  42  : Thread(1, 1, 0)
  43 {
  44         buffer = 0;
  45         buffer_valid = 0;
  46         input_buffer = 0;
  47         done = 0;
  48         total_buffers = 0;
  49         current_inbuffer = 0;
  50         current_outbuffer = 0;
  51         buffer_size = 0;
  52         audio_buffer = 0;
  53         audio_samples = 0;
  54         video_lock = 0;
  55         audio_lock = 0;
  56         buffer_lock = 0;
  57         decoder = 0;
  58         fd = -1;
  59 }
  60
  61 Device1394Input::~Device1394Input()
  62 {
  63 // Driver crashes if it isn't stopped before cancelling the thread.
  64 // May still crash during the cancel though.
  65
  66         if(Thread::running())
  67         {
  68                 done = 1;
  69                 Thread::cancel();
  70                 Thread::join();
  71         }
  72
  73         if(buffer)
  74         {
  75                 for(int i = 0; i < total_buffers; i++)
  76                         delete [] buffer[i];
  77                 delete [] buffer;
  78                 delete [] buffer_valid;
  79         }
  80
  81         if(input_buffer)
  82                 munmap(input_buffer, total_buffers * buffer_size);
  83
  84         if(audio_buffer)
  85         {
  86                 delete [] audio_buffer;
  87         }
  88
  89         if(decoder)
  90         {
  91                 dv_delete(decoder);
  92         }
  93
  94         if(video_lock) delete video_lock;
  95         if(audio_lock) delete audio_lock;
  96         if(buffer_lock) delete buffer_lock;
  97         if(fd > 0)
  98         {
  99                 close(fd);
 100         }
 101 }
 102
 103 int Device1394Input::open(int port,
 104         int channel,
 105         int length,
 106         int channels,
 107         int samplerate,
 108         int bits,
 109         int w,
 110         int h)
 111 {
 112         int result = 0;
 113         this->channel = channel;
 114         this->length = length;
 115         this->channels = channels;
 116         this->samplerate = samplerate;
 117         this->bits = bits;
 118         this->w = w;
 119         this->h = h;
 120         is_pal = (h == 576);
 121         buffer_size = is_pal ? DV_PAL_SIZE : DV_NTSC_SIZE;
 122         total_buffers = length;
 123
 124
 125 // Initialize grabbing
 126         if(fd < 0)
 127         {
 128 #define PATH "/dev/dv1394/0"
 129                 if((fd = ::open(PATH, O_RDWR)) < 0)
 130                 {
 131                         printf("Device1394Input::open %s: %s\n", PATH, strerror(errno));
 132                 }
 133                 else
 134                 {
 135 #define CIP_N_NTSC   68000000
 136 #define CIP_D_NTSC 1068000000
 137
 138 #define CIP_N_PAL  1
 139 #define CIP_D_PAL 16
 140
 141                         struct dv1394_init init =
 142                         {
 143                                 api_version: DV1394_API_VERSION,
 144                                 channel: (unsigned int)channel,
 145                                 n_frames: (unsigned int)length,
 146                                 format: is_pal ? DV1394_PAL: DV1394_NTSC,
 147                                 cip_n: 0,
 148                                 cip_d: 0,
 149                                 syt_offset: 0
 150                         };
 151                         if(ioctl(fd, DV1394_IOC_INIT, &init) < 0)
 152                         {
 153                                 printf("Device1394Input::open DV1394_IOC_INIT: %s\n", strerror(errno));
 154                         }
 155
 156                         input_buffer = (unsigned char*)mmap(0,
 157                 length * buffer_size,
 158                 PROT_READ | PROT_WRITE,
 159                 MAP_SHARED,
 160                 fd,
 161                 0);
 162
 163                         if(ioctl(fd, DV1394_IOC_START_RECEIVE, 0) < 0)
 164                         {
 165                                 perror("Device1394Input::open DV1394_START_RECEIVE");
 166                         }
 167                 }
 168
 169
 170
 171                 buffer = new char*[total_buffers];
 172                 buffer_valid = new int[total_buffers];
 173                 bzero(buffer_valid, sizeof(int) * total_buffers);
 174                 for(int i = 0; i < total_buffers; i++)
 175                 {
 176                         buffer[i] = new char[DV_PAL_SIZE];
 177                 }
 178
 179
 180                 audio_buffer = new char[INPUT_SAMPLES * 2 * channels];
 181                 audio_lock = new Condition(0, "Device1394Input::audio_lock");
 182                 video_lock = new Condition(0, "Device1394Input::video_lock");
 183                 buffer_lock = new Mutex("Device1394Input::buffer_lock");
 184
 185                 decoder = dv_new();
 186
 187                 Thread::start();
 188         }
 189         return result;
 190 }
 191
 192 void Device1394Input::run()
 193 {
 194         while(!done)
 195         {
 196 // Wait for frame to arrive
 197                 struct dv1394_status status;
 198 printf("Device1394Input::run %d done=%d\n", __LINE__, done);
 199
 200                 Thread::enable_cancel();
 201                 if(ioctl(fd, DV1394_IOC_WAIT_FRAMES, 1))
 202                 {
 203                         perror("Device1394Input::run DV1394_IOC_WAIT_FRAMES");
 204                         sleep(1);
 205                 }
 206                 else
 207                 if(ioctl(fd, DV1394_IOC_GET_STATUS, &status))
 208                 {
 209                         perror("Device1394Input::run DV1394_IOC_GET_STATUS");
 210                 }
 211                 Thread::disable_cancel();
 212
 213
 214
 215                 buffer_lock->lock("Device1394Input::run 1");
 216
 217                 int nframes = status.n_clear_frames;
 218                 for(int i = 0; i < nframes; i++)
 219                 {
 220 // Get a buffer to transfer to
 221                         char *dst = 0;
 222                         int is_overflow = 0;
 223                         if(!buffer_valid[current_inbuffer])
 224                                 dst = buffer[current_inbuffer];
 225                         else
 226                                 is_overflow = 1;
 227
 228                         char *src = (char*)(input_buffer + buffer_size * status.first_clear_frame);
 229 // static FILE *test = 0;
 230 // if(!test) test = fopen("/tmp/test", "w");
 231 // fwrite(src, buffer_size, 1, test);
 232
 233 // Export the video
 234                         if(dst)
 235                         {
 236                                 memcpy(dst, src, buffer_size);
 237                                 buffer_valid[current_inbuffer] = 1;
 238                                 video_lock->unlock();
 239                         }
 240
 241
 242 // Extract the audio
 243                         if(audio_samples < INPUT_SAMPLES - 2048)
 244                         {
 245                                 int audio_result = dv_read_audio(decoder,
 246                                         (unsigned char*)audio_buffer +
 247                                                 audio_samples * 2 * 2,
 248                                         (unsigned char*)src,
 249                                         buffer_size,
 250                                         channels,
 251                                         bits);
 252                                 int real_freq = decoder->decoder->audio->frequency;
 253                                 if (real_freq == 32000)
 254                                 {
 255 // do in-place _FAST_ && _SIMPLE_ upsampling to 48khz
 256 // i also think user should get a warning that his material is effectively 32khz
 257 // we take 16bit samples for both channels in one 32bit int
 258                                         int *twosample = (int*) (audio_buffer + audio_samples * 2 * 2);
 259                                         int from = audio_result - 1;
 260                                         int new_result = audio_result * 48000 / real_freq;
 261                                         for (int to = new_result - 1; to >=0; to--)
 262                                         {
 263                                                 if ((to % 3) == 0 || (to % 3) == 1) from --;
 264                                                 twosample[to] = twosample[from];
 265                                         }
 266                                         audio_result = new_result;
 267                                 }
 268
 269
 270                                 audio_samples += audio_result;
 271
 272 // Export the audio
 273                                 audio_lock->unlock();
 274                         }
 275
 276 // Advance buffer
 277                         if(!is_overflow)
 278                                 increment_counter(&current_inbuffer);
 279
 280
 281                         Thread::enable_cancel();
 282                         if(ioctl(fd, DV1394_IOC_RECEIVE_FRAMES, 1))
 283                         {
 284                                 perror("Device1394Input::run DV1394_IOC_RECEIVE_FRAMES");
 285                         }
 286
 287                         if(ioctl(fd, DV1394_IOC_GET_STATUS, &status))
 288                         {
 289                                 perror("Device1394Input::run DV1394_IOC_GET_STATUS");
 290                         }
 291                         Thread::disable_cancel();
 292                 }
 293
 294                 buffer_lock->unlock();
 295         }
 296 }
 297
 298 void Device1394Input::increment_counter(int *counter)
 299 {
 300         (*counter)++;
 301         if(*counter >= total_buffers) *counter = 0;
 302 }
 303
 304 void Device1394Input::decrement_counter(int *counter)
 305 {
 306         (*counter)--;
 307         if(*counter < 0) *counter = total_buffers - 1;
 308 }
 309
 310
 311
 312 int Device1394Input::read_video(VFrame *data)
 313 {
 314         int result = 0;
 315
 316 // Take over buffer table
 317         buffer_lock->lock("Device1394Input::read_video 1");
 318 // Wait for buffer with timeout
 319         while(!buffer_valid[current_outbuffer] && !result)
 320         {
 321                 buffer_lock->unlock();
 322                 result = video_lock->timed_lock(BUFFER_TIMEOUT, "Device1394Input::read_video 2");
 323                 buffer_lock->lock("Device1394Input::read_video 3");
 324         }
 325
 326 // Copy frame
 327         if(buffer_valid[current_outbuffer])
 328         {
 329                 data->allocate_compressed_data(buffer_size);
 330                 data->set_compressed_size(buffer_size);
 331                 memcpy(data->get_data(), buffer[current_outbuffer], buffer_size);
 332                 buffer_valid[current_outbuffer] = 0;
 333                 increment_counter(&current_outbuffer);
 334         }
 335
 336         buffer_lock->unlock();
 337         return result;
 338 }
 339
 340
 341
 342
 343 int Device1394Input::read_audio(char *data, int samples)
 344 {
 345         int result = 0;
 346         int timeout = (int64_t)samples * (int64_t)1000000 * (int64_t)2 / (int64_t)samplerate;
 347         if(timeout < 500000) timeout = 500000;
 348
 349 // Take over buffer table
 350         buffer_lock->lock("Device1394Input::read_audio 1");
 351 // Wait for buffer with timeout
 352         while(audio_samples < samples && !result)
 353         {
 354                 buffer_lock->unlock();
 355                 result = audio_lock->timed_lock(timeout, "Device1394Input::read_audio 2");
 356                 buffer_lock->lock("Device1394Input::read_audio 3");
 357         }
 358 //printf("Device1394Input::read_audio 1 %d %d\n", result, timeout);
 359
 360         if(audio_samples >= samples)
 361         {
 362                 memcpy(data, audio_buffer, samples * bits * channels / 8);
 363                 memcpy(audio_buffer,
 364                         audio_buffer + samples * bits * channels / 8,
 365                         (audio_samples - samples) * bits * channels / 8);
 366                 audio_samples -= samples;
 367         }
 368 //printf("Device1394Input::read_audio 100\n");
 369         buffer_lock->unlock();
 370         return result;
 371 }
 372
 373
 374
 375
 376