synfig-studio/trunk/src/gtkmm/audiocontainer.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file audiocontainer.cpp
   3 **      \brief Audio Container implementation File
   4 **
   5 **      $Id: audiocontainer.cpp,v 1.1.1.1 2005/01/07 03:34:35 darco Exp $
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include <algorithm>
  33 #include <sigc++/signal.h>
  34
  35 #include <ETL/stringf>
  36 #include <ETL/clock>
  37 //#include <ETL/thread>
  38 #include <glibmm/thread.h>
  39
  40 #include <synfig/general.h>
  41
  42 #include <glibmm/main.h>
  43
  44 #include "audiocontainer.h"
  45
  46 #include <cstdio>
  47 #include <sys/stat.h>
  48 #include <errno.h>
  49
  50 #include <set>
  51 #include <vector>
  52
  53 #ifdef WITH_FMOD
  54 #include <fmod.h>
  55 #endif
  56
  57 #endif
  58
  59 /* === U S I N G =========================================================== */
  60
  61 using namespace std;
  62 using namespace etl;
  63 using namespace synfig;
  64
  65 /* === M A C R O S ========================================================= */
  66 #ifdef __WIN32
  67 #else //linux...
  68 #define AUDIO_OUTPUT    FSOUND_OUTPUT_OSS
  69 #endif
  70
  71 /* === G L O B A L S ======================================================= */
  72 const double delay_factor = 3;
  73
  74 /* === P R O C E D U R E S ================================================= */
  75
  76 /* === M E T H O D S ======================================================= */
  77
  78 /* === E N T R Y P O I N T ================================================= */
  79
  80 //Help constructing stuff
  81 struct FSOUND_SAMPLE;
  82 using studio::AudioContainer;
  83
  84 bool build_profile(FSOUND_SAMPLE *sample, double &samplerate, std::vector<char> &samples)
  85 {
  86 #ifdef WITH_FMOD
  87
  88         float sps = samplerate;
  89
  90         //trivial rejection...
  91         if(!sample || sps < 1)
  92         {
  93                 synfig::warning("build_profile: Sample rate was too low or sample was invalid");
  94                 return false;
  95         }
  96
  97         //lock for all samples and process them into a subset
  98         unsigned int mode = FSOUND_Sample_GetMode(sample);
  99
 100         //make sure that it's 8 bit... I hope this works...
 101
 102         //sample rate of the actual song...
 103         int allsamplerate = 0;
 104         FSOUND_Sample_GetDefaults(sample,&allsamplerate,0,0,0);
 105
 106         //get the size of the sample defaults from the mode
 107         int channels = 1;
 108         int channelsize = 1; //number of bytes
 109
 110         if(mode & FSOUND_16BITS) channelsize = 2; //this shouldn't happen
 111         if(mode & FSOUND_STEREO) channels = 2;
 112
 113         //Get the sample information
 114         int samplesize = channels*channelsize; //the only two things that increase samplesize
 115         int numsamples = FSOUND_Sample_GetLength(sample); //number of samples in the sound
 116         int sizeall = samplesize*numsamples; //should be the size of the entire song...
 117
 118         if(sizeall <= 0)
 119         {
 120                 synfig::warning("ProfileAudio: Sample buffer cannot be size smaller than 1 (%X)",FSOUND_GetError());
 121                 return false;
 122         }
 123
 124         //be sure that the new sample rate is less than or equal to the original
 125         if(sps > allsamplerate) sps = allsamplerate;
 126
 127         float stride = allsamplerate/(float)sps;
 128
 129         //down sampling to 8 bit min/max values
 130         synfig::warning("About to downsample from %d Hz to %.1f Hz, sample stride: %f", allsamplerate, sps, stride);
 131
 132         char *sampledata=0,*useless = 0;
 133         unsigned int len1,len2;
 134         // vector<char> samples;
 135         {
 136                 if(!FSOUND_Sample_Lock(sample,0,sizeall,(void**)&sampledata,(void**)&useless,&len1,&len2))
 137                 {
 138                         synfig::warning("ProfileAudio: Unable to lock the sound buffer... (%X)",FSOUND_GetError());
 139                         return false;
 140                 }
 141                 synfig::warning("Locked: %X: %d bytes, %X: %d bytes",sampledata,len1,useless,len2);
 142
 143                 if(channelsize == 1)
 144                 {
 145                         //process the data
 146                         char *iter = sampledata;
 147                         char *end = iter + sizeall;
 148
 149                         float curaccum = 0;
 150                         float numinc = sps/(float)allsamplerate;
 151
 152                         /* Loop per sample DDA alg.
 153                         */
 154
 155                         int i = 0;
 156
 157                         //HACK - to prevent if statement inside inner loop
 158                         //synfig::warning("wo baby wo baby, inc: %d, stride: %f, size: %d", inc, stride, sizeall);
 159                         while(iter < end)
 160                         {
 161                                 int maxs = 0, mins = 0;
 162
 163                                 for(;curaccum < 1; curaccum += numinc)
 164                                 {
 165                                         for(i = 0; iter < end && i < channels; ++i, iter += channelsize)
 166                                         {
 167                                                 maxs = std::max(maxs,(int)*iter);
 168                                                 mins = std::min(mins,(int)*iter);
 169                                         }
 170                                 }
 171                                 //insert onto new list
 172                                 samples.push_back(maxs);
 173                                 samples.push_back(mins);
 174
 175                                 //and flush all the used samples for curaccum
 176                                 curaccum -= 1;
 177                         }
 178                 }else if(channelsize == 2)
 179                 {
 180                         //process the data
 181                         char *iter = sampledata;
 182                         char *end = iter + sizeall;
 183
 184                         float curaccum = 0;
 185                         float numinc = sps/(float)allsamplerate;
 186
 187                         /* Loop per sample DDA alg.
 188                         */
 189
 190                         int i = 0;
 191
 192                         //HACK - to prevent if statement inside inner loop
 193                         //synfig::warning("wo baby wo baby, inc: %d, stride: %f, size: %d", inc, stride, sizeall);
 194                         while(iter < end)
 195                         {
 196                                 int maxs = 0, mins = 0;
 197
 198                                 for(;curaccum < 1; curaccum += numinc)
 199                                 {
 200                                         for(i = 0; iter < end && i < channels; ++i, iter += channelsize)
 201                                         {
 202                                                 maxs = std::max(maxs,(int)*(short*)iter);
 203                                                 mins = std::min(mins,(int)*(short*)iter);
 204                                         }
 205                                 }
 206                                 //insert onto new list
 207                                 samples.push_back(maxs / 256);
 208                                 samples.push_back(mins / 256);
 209
 210                                 //and flush all the used samples for curaccum
 211                                 curaccum -= 1;
 212                         }
 213                 }
 214         }
 215
 216         synfig::warning("Stats: %f seconds with %d bytes now %d bytes", (samples.size()/2)/sps, sizeall, samples.size());
 217         synfig::warning("               %f seconds before", numsamples/(float)allsamplerate);
 218
 219         //we're done yay!, unlock
 220         FSOUND_Sample_Unlock(sample,sampledata,useless,len1,len2);
 221         synfig::info("Unlocked");
 222
 223         //FSOUND_PlaySound(FSOUND_FREE,sound); //test
 224
 225         //we're done
 226         samplerate = sps*2; //it must be x2 because we are sampling max and min
 227
 228         return true;
 229
 230         #else
 231
 232         return false;
 233
 234         #endif
 235 }
 236
 237
 238 //FMOD Systemwide Specific data mostly here...
 239
 240 struct scrubinfo;
 241
 242 #ifdef WITH_FMOD
 243 static double   buffer_length_sec = 0;
 244
 245 //------- Scrubbing --------------
 246 /* Scrubbing works as follows:
 247
 248         The sound is played using PlaySoundEx
 249                 we specify a user created DSP for scrubbing
 250                 set it initially to inactive
 251
 252         When the program initiates it
 253                 we set the initial data in the shared structure and activate the dsp unit
 254                 then for each cursor update we get we set the value in the shared structure
 255 */
 256
 257 /* Things to check:
 258         If IsPlaying just governs the channel play/stop value or if it also concerns the pause state
 259
 260 */
 261
 262 //so we can know where to create all this stuff
 263 struct scrubinfo
 264 {
 265         /*      Linearly fit the frequency to hit the desired zero point...
 266         */
 267         /*struct scrubelement
 268         {
 269                 double  pos;
 270                 double  dt;
 271                 //the amount of time left til the cursor hits this one
 272                 //      it's incremental so that the cursor must pass previous
 273                 //      ones before decrementing this value
 274         };
 275         */
 276
 277         //the time it should take to get to the next position...
 278
 279         //to prevent from writing to the same location at once... (pos, deltatime, delaystart)
 280         //Glib::Mutex   lock;
 281
 282         //the queue system would provide a more accurate representation...
 283         volatile double pos;
 284         volatile double deltatime;
 285
 286         volatile double delaystart; //the amount of time we need to go before we start interpolating...
 287
 288         volatile int    channel;
 289
 290         /*std::list<scrubelement>       queue;
 291
 292         volatile int    channel;
 293
 294         //current position is FSOUND_GetCurrentPosition and current time is always 0...
 295
 296         void add(const scrubelement &elem)
 297         {
 298                 lock.LockWrite();
 299
 300                 queue.push_back(elem);
 301
 302                 lock.UnlockWrite();
 303         }
 304
 305         //Function to safely get rid of all the old samples (dt < 0)
 306         void flush()
 307         {
 308                 lock.LockWrite();
 309
 310                 while(queue.size() && queue.front().dt < 0)
 311                 {
 312                         queue.pop_front();
 313                 }
 314
 315                 lock.UnlockWrite();
 316         }*/
 317
 318         void Lock()
 319         {
 320                 //lock.lock();
 321         }
 322
 323         void Unlock()
 324         {
 325                 //lock.unlock();
 326         }
 327
 328         //All parameters and state should be set by the time we get here...
 329         void scrub_dsp_process()
 330         {
 331                 const double epsilon = 1e-5;
 332
 333                 //Trivial reject... we go nowhere if we aren't playing (hit boundary...)
 334                 if(!FSOUND_IsPlaying(channel)) return;
 335
 336                 //Get rid of all the old samples
 337                 //flush();
 338
 339                 //Trivial reject #2 - We also go nowhere with no future samples (pause)
 340                 /*if(queue.size() <= 0)
 341                 {
 342                         FSOUND_SetPaused(channel,true);
 343                         return;
 344                 }*/
 345
 346                 double dt = buffer_length_sec;
 347
 348                 //Lock ourselves so we don't die
 349                 Lock();
 350
 351                 //printf("DSP data: delay = %.3f s, pos = %d, dt = %.3f\n", delaystart, (int)pos, deltatime);
 352
 353                 //Check delay
 354                 if(delaystart > 0)
 355                 {
 356                         delaystart -= dt;
 357
 358                         if(delaystart < 0)
 359                         {
 360                                 dt = -delaystart; //add time back...
 361                                 delaystart = 0;
 362                         }
 363                 }
 364
 365                 //Trivial reject for if we're past current sample...
 366                 if(delaystart > 0 || deltatime <= 0)
 367                 {
 368                         FSOUND_SetPaused(channel,true);
 369                         Unlock();
 370                         return;
 371                 }
 372
 373                 //Calculate stretched frequency based on delayed future sample...
 374
 375                 //NOTE: BY NOT TRACKING POSITION AS A FLOAT AND JUST USING THE SOUNDS VALUE
 376                 //              WE ARE LOSING A TINY AMOUNT OF PRECISION ACCURACY EVERY UPDATE
 377                 //              (THIS SHOULDN'T BE A PROBLEM)
 378                 const double p0 = FSOUND_GetCurrentPosition(channel);
 379                 double curdp = 0;
 380
 381                 if(!FSOUND_GetPaused(channel))
 382                 {
 383                         curdp = FSOUND_GetFrequency(channel) * deltatime;
 384                 }
 385
 386                 //need to rescale derivative...
 387
 388                 //Extrapolate from difference in position and deltatime vs dt...
 389                 const double pa = p0 + curdp/2;
 390
 391                 const double p1 = pos;
 392
 393                 //const double pb = p0/3 + p1*2/3;
 394
 395                 //will extrapolate if needed... (could be funky on a curve)
 396                 double t = 0;
 397                 if(deltatime > epsilon)
 398                 {
 399                         t = dt / deltatime;
 400                 }
 401
 402                 //Decrement deltatime (we may have gone past but that's what happens when we don't get input...)
 403                 deltatime -= dt;
 404
 405                 //we don't need to look at the current variables anymore...
 406                 Unlock();
 407
 408                 const double invt = 1-t;
 409                 //double deltapos = (p1-p0)*t; //linear version
 410                 double deltapos = invt*invt*p0 + 2*t*invt*pa + t*t*p1 - p0; //quadratic smoothing version
 411
 412                 //Attempted cubic smoothing
 413                 //const double invt2 = invt*invt;
 414                 //const double t2 = t*t;
 415                 //double deltapos = invt2*invt*p0 + 3*t*invt2*pa + 3*t2*invt*pb + t2*t*p1;
 416                 //double deltapos = p0 + t*(3*(pa-p0) + t*(3*(p0+2*pa+pb) + t*((p1-3*pb+3*ba-p0)))); //unwound cubic
 417
 418                 //printf("\ttime = %.2f; p(%d,%d,%d) dp:%d - delta = %d\n",t,(int)p0,(int)p1,(int)p2,(int)curdp,(int)deltapos);
 419
 420                 //Based on the delta info calculate the stretched frequency
 421                 const int dest_samplesize = FSOUND_DSP_GetBufferLength();
 422
 423                 //rounded to nearest frequency... (hopefully...)
 424                 int freq = (int)(deltapos * FSOUND_GetOutputRate() / (double)dest_samplesize);
 425
 426                 //NOTE: WE MIGHT WANT TO DO THIS TO BE MORE ACCURATE BUT YEAH... ISSUES WITH SMALL NUMBERS
 427                 //double newdp = deltapos / t;
 428
 429                 //printf("\tfreq = %d Hz\n", freq);
 430
 431                 // !If I failed... um assume we have to pause it... ?
 432                 if(abs(freq) < 100)
 433                 {
 434                         FSOUND_SetPaused(channel,true);
 435                 }else
 436                 {
 437                         //synfig::info("DSP f = %d Hz", freq);
 438                         FSOUND_SetPaused(channel,false);
 439                         if(!FSOUND_SetFrequency(channel,freq))
 440                         {
 441                                 //ERROR WILL ROBINSON!!!...
 442                                 printf("Error in Freq... what do I do?\n");
 443                         }
 444                 }
 445         }
 446 };
 447
 448 struct scrubuserdata
 449 {
 450         /* //for use with multiple
 451         //each one is a 'handle' to a pointer that will be effected by something else
 452         typedef scrubinfo**     value_type;
 453         typedef std::set< value_type > scrubslist;
 454         scrubslist              scrubs;
 455
 456         //so we can lock access to the list...
 457         ReadWriteLock   lock;
 458
 459         void AddScrub(scrubinfo **i)
 460         {
 461                 lock.LockWrite();
 462                 scrubs.insert(i);
 463                 lock.UnLockWrite();
 464         }
 465
 466         void RemoveScrub(scrubinfo **i)
 467         {
 468                 lock.LockWrite();
 469                 scrubs.erase(i);
 470                 lock.UnLockWrite();
 471         }*/
 472
 473         scrubinfo * volatile *  scrub;
 474 };
 475
 476 //Scrubbing data structures
 477 static const int                default_scrub_priority = 5; //between clear and sfx/music mix
 478 static scrubuserdata    g_scrubdata = {0};
 479 static FSOUND_DSPUNIT   *scrubdspunit = 0;
 480
 481 void * scrubdspwrap(void *originalbuffer, void *newbuffer, int length, void *userdata)
 482 {
 483         //std::string   dsp = "DSP";
 484         if(userdata)
 485         {
 486                 scrubuserdata &sd = *(scrubuserdata*)userdata;
 487
 488                 /* //For use with multiple scrubs...
 489                 //Lock so no one can write to it while we're reading from it...
 490                 sd.lock.LockRead();
 491
 492                 //make a copy of it...
 493                 std::vector<scrubinfo**>        v(sd.scrubs.begin(),sd.scrubs.end());
 494
 495                 //other things can do stuff with it again...
 496                 sd.lock.UnLockRead();
 497
 498                 //loop through the list and process all the active scrub units
 499                 std::vector<scrubinfo**>::iterator      i = v.begin(),
 500                                                                                         end = v.end();
 501                 for(;i != end; ++i)
 502                 {
 503                         //check to make sure this object is active...
 504                         if(*i && **i)
 505                         {
 506                                 (**i)->scrub_dsp_process();
 507                         }
 508                 }
 509                 */
 510
 511                 if(sd.scrub && *sd.scrub)
 512                 {
 513                         //dsp += " processing...";
 514                         scrubinfo * info = (*sd.scrub);
 515                         info->scrub_dsp_process();
 516                 }
 517         }
 518
 519         //synfig::info(dsp);
 520
 521         return newbuffer;
 522 }
 523
 524 //------- Class for loading fmod on demand -------
 525
 526 class FMODInitializer
 527 {
 528         bool loaded;
 529         int     refcount;
 530
 531 public:
 532         FMODInitializer():loaded(false),refcount(0) {}
 533         ~FMODInitializer()
 534         {
 535                 clear();
 536         }
 537
 538         void addref()
 539         {
 540                 if(!loaded)
 541                 {
 542                         #ifdef WITH_FMOD
 543                         synfig::info("Initializing FMOD on demand...");
 544
 545                         {
 546                                 FSOUND_SetOutput(AUDIO_OUTPUT);
 547
 548                                 /*int numdrivers = FSOUND_GetNumDrivers();
 549                                 synfig::info("Num FMOD drivers = %d",numdrivers);
 550                                 synfig::info("Current Driver is #%d", FSOUND_GetDriver());
 551
 552                                 for(int i = 0; i < numdrivers; ++i)
 553                                 {
 554                                         unsigned int caps = 0;
 555                                         FSOUND_GetDriverCaps(i,&caps);
 556
 557                                         synfig::info("   Caps for driver %d (%s) = %x",i,FSOUND_GetDriverName(i),caps);
 558                                 }
 559
 560                                 FSOUND_SetDriver(0);*/
 561
 562                                 //Modify buffer size...
 563                                 //FSOUND_SetBufferSize(100);
 564
 565                                 if(!FSOUND_Init(44100, 32, 0))
 566                                 {
 567                                         synfig::warning("Unable to load FMOD");
 568                                 }else
 569                                 {
 570                                         loaded = true;
 571
 572                                         //Create the DSP for processing scrubbing...
 573                                         scrubdspunit = FSOUND_DSP_Create(&scrubdspwrap,default_scrub_priority,&g_scrubdata);
 574
 575                                         //Load the number of sec per buffer into the global variable...
 576                                         buffer_length_sec = FSOUND_DSP_GetBufferLength() / (double)FSOUND_GetOutputRate();
 577                                 }
 578                         }
 579                         #endif
 580                 }
 581
 582                 //add to the refcount
 583                 ++refcount;
 584                 //synfig::info("Audio: increment fmod refcount %d", refcount);
 585         }
 586
 587         void decref()
 588         {
 589                 if(refcount <= 0)
 590                 {
 591                         synfig::warning("FMOD refcount is already 0...");
 592                 }else
 593                 {
 594                         --refcount;
 595                         //synfig::info("Audio: decrement fmod refcount %d", refcount);
 596
 597                         //NOTE: UNCOMMENT THIS IF YOU WANT FMOD TO UNLOAD ITSELF WHEN IT ISN'T NEEDED ANYMORE...
 598                         flush();
 599                 }
 600         }
 601
 602         bool is_loaded() const { return loaded; }
 603
 604         void clear()
 605         {
 606                 refcount = 0;
 607                 flush();
 608         }
 609
 610         void flush()
 611         {
 612                 if(loaded && refcount <= 0)
 613                 {
 614                         #ifdef WITH_FMOD
 615                         synfig::info("Unloading FMOD");
 616                         if(scrubdspunit) FSOUND_DSP_Free(scrubdspunit);
 617                         FSOUND_Close();
 618                         #endif
 619                         loaded = false;
 620                 }
 621         }
 622 };
 623
 624 //The global counter for FMOD....
 625 FMODInitializer         fmodinit;
 626
 627 #endif
 628
 629 //----- AudioProfile Implementation -----------
 630 void studio::AudioProfile::clear()
 631 {
 632         samplerate = 0;
 633         samples.clear();
 634 }
 635
 636 handle<AudioContainer>  studio::AudioProfile::get_parent() const
 637 {
 638         return parent;
 639 }
 640
 641 void studio::AudioProfile::set_parent(etl::handle<AudioContainer> i)
 642 {
 643         parent = i;
 644 }
 645
 646 double studio::AudioProfile::get_offset() const
 647 {
 648         if(parent)
 649                 return parent->get_offset();
 650         return 0;
 651 }
 652
 653 //---------- AudioContainer definitions ---------------------
 654
 655 struct studio::AudioContainer::AudioImp
 656 {
 657         //Sample load time information
 658         FSOUND_SAMPLE *         sample;
 659         int                                     channel;
 660         int                                     sfreq;
 661         int                                     length;
 662
 663         //Time information
 664         double                          offset; //time offset for playing...
 665
 666         //We don't need it now that we've adopted the play(t) time schedule...
 667         //current time... and playing info....
 668         //float                         seekpost;
 669         //bool                          useseekval;
 670
 671         //Make sure to sever our delayed start if we are stopped prematurely
 672         sigc::connection        delaycon;
 673
 674         //Action information
 675         bool                            playing;
 676         double                          curscrubpos;
 677         etl::clock                      timer;  //for getting the time diff between scrub input points
 678
 679         //Scrubbing information...
 680         //the current position of the sound will be sufficient for normal stuff...
 681         #ifdef WITH_FMOD
 682         scrubinfo                       scrinfo;
 683         #endif
 684
 685         scrubinfo                       *scrptr;
 686
 687         bool is_scrubbing() const {return scrptr != 0;}
 688         void set_scrubbing(bool s)
 689         {
 690                 #ifdef WITH_FMOD
 691                 if(s)
 692                         scrptr = &scrinfo;
 693                 else
 694                 #endif
 695                 scrptr = 0;
 696         }
 697
 698         //helper to make sure we are actually playing (and to get a new channel...)
 699         bool init_play()
 700         {
 701                 #ifdef WITH_FMOD
 702                 if(!FSOUND_IsPlaying(channel))
 703                 {
 704                         if(sample)
 705                         {
 706                                 //play sound paused etc.
 707                                 channel = FSOUND_PlaySoundEx(FSOUND_FREE,sample,0,true);
 708                                 if(channel < 0 || FSOUND_GetError() != FMOD_ERR_NONE)
 709                                 {
 710                                         synfig::warning("Could not play the sample...");
 711                                         return false;
 712                                 }
 713                         }
 714                 }else
 715                 {
 716                         FSOUND_SetPaused(channel,true);
 717                         FSOUND_SetFrequency(channel,sfreq);
 718                 }
 719                 return true;
 720
 721                 #else
 722
 723                 return false;
 724
 725                 #endif
 726         }
 727
 728 public: //structors
 729         AudioImp()
 730         :sample(0),
 731         channel(0),
 732         sfreq(0),
 733         length(0),
 734         offset(0),
 735         playing(false),
 736         scrptr(0)
 737         {
 738                 //reuse the channel...
 739                 #ifdef WITH_FMOD
 740                 channel = FSOUND_FREE;
 741                 #endif
 742         }
 743
 744         ~AudioImp()
 745         {
 746                 clear();
 747         }
 748
 749 public: //helper/accessor funcs
 750         bool start_playing_now() //callback for timer...
 751         {
 752                 #ifdef WITH_FMOD
 753                 if(playing)
 754                 {
 755                         //Make sure the sound is playing and if it is un pause it...
 756                         if(init_play())
 757                                 FSOUND_SetPaused(channel,false);
 758                 }
 759                 #endif
 760
 761                 return false; //so the timer doesn't repeat itself
 762         }
 763
 764         bool isRunning()
 765         {
 766                 #ifdef WITH_FMOD
 767                 return FSOUND_IsPlaying(channel);
 768                 #else
 769                 return false;
 770                 #endif
 771         }
 772
 773         bool isPaused()
 774         {
 775 #ifdef WITH_FMOD
 776                 return FSOUND_GetPaused(channel);
 777 #else
 778                 return false;
 779 #endif
 780         }
 781
 782
 783 public: //forward interface
 784
 785         //Accessors for the offset - in seconds
 786         const double &get_offset() const {return offset;}
 787         void set_offset(const double &d)
 788         {
 789                 offset = d;
 790         }
 791
 792         //Will override the parameter timevalue if the sound is running, and not if it's not...
 793         bool get_current_time(double &out)
 794         {
 795                 if(isRunning())
 796                 {
 797                         #ifdef WITH_FMOD
 798                         unsigned int pos = FSOUND_GetCurrentPosition(channel);
 799
 800                         //adjust back by 1 frame... HACK....
 801                         //pos -= FSOUND_DSP_GetBufferLength();
 802
 803                         //set the position
 804                         out = pos/(double)sfreq + offset;
 805                         #endif
 806
 807                         return true;
 808                 }
 809                 return false;
 810         }
 811
 812         //Big implementation functions...
 813         bool load(const std::string &filename, const std::string &filedirectory);
 814         void clear();
 815
 816         //playing functions
 817         void play(double t);
 818         void stop();
 819
 820         //scrubbing functions
 821         void start_scrubbing(double t);
 822         void scrub(double t);
 823         void stop_scrubbing();
 824
 825         double scrub_time()
 826         {
 827                 return curscrubpos;
 828         }
 829 };
 830
 831 //--------------- Audio Container definitions --------------------------
 832 studio::AudioContainer::AudioContainer()
 833 {
 834         imp = 0;
 835 }
 836
 837 studio::AudioContainer::~AudioContainer()
 838 {
 839         if(imp) delete (imp);
 840 }
 841
 842 bool studio::AudioContainer::load(const string &filename,const string &filedirectory)
 843 {
 844         if(!imp)
 845         {
 846                 imp = new AudioImp;
 847         }
 848
 849         profilevalid = false;
 850         return imp->load(filename,filedirectory);
 851 }
 852
 853 handle<studio::AudioProfile> studio::AudioContainer::get_profile(float samplerate)
 854 {
 855         #ifdef WITH_FMOD
 856
 857         //if we already have done our work, then we're good
 858         if(profilevalid && prof)
 859         {
 860                 //synfig::info("Using already built profile");
 861                 return prof;
 862         }
 863
 864         //synfig::info("Before profile");
 865         //make a new profile at current sample rate
 866
 867         //NOTE: We might want to reuse the structure already there...
 868         prof = new AudioProfile;
 869         prof->set_parent(this); //Our parent is THIS!!!
 870
 871         if(!prof)
 872         {
 873                 synfig::warning("Couldn't allocate audioprofile...");
 874                 return handle<studio::AudioProfile>();
 875         }
 876
 877         //setting the info for the sample rate
 878         //synfig::info("Setting info...");
 879
 880         synfig::info("Building Profile...");
 881         prof->samplerate = samplerate;
 882         if(build_profile(imp->sample,prof->samplerate,prof->samples))
 883         {
 884                 synfig::info("  Success!");
 885                 profilevalid = true;
 886                 return prof;
 887         }else
 888         {
 889                 return handle<studio::AudioProfile>();
 890         }
 891
 892         #else
 893
 894         return handle<studio::AudioProfile>();
 895
 896         #endif
 897 }
 898
 899 void studio::AudioContainer::clear()
 900 {
 901         if(imp)
 902         {
 903                 delete imp;
 904                 imp = 0;
 905         }
 906
 907         profilevalid = false;
 908 }
 909
 910 void studio::AudioContainer::play(double t)
 911 {
 912         if(imp) imp->play(t);
 913 }
 914
 915 void studio::AudioContainer::stop()
 916 {
 917         if(imp) imp->stop();
 918 }
 919
 920 bool studio::AudioContainer::get_current_time(double &out)
 921 {
 922         if(imp) return imp->get_current_time(out);
 923         else return false;
 924 }
 925
 926 void AudioContainer::set_offset(const double &s)
 927 {
 928         if(imp) imp->set_offset(s);
 929 }
 930
 931 double AudioContainer::get_offset() const
 932 {
 933         static double zero = 0;
 934         if(imp)
 935                 return imp->get_offset();
 936         return zero;
 937 }
 938
 939 bool AudioContainer::is_playing() const
 940 {
 941         if(imp)
 942                 return imp->playing;
 943         return false;
 944 }
 945
 946 bool AudioContainer::is_scrubbing() const
 947 {
 948         if(imp)
 949                 return imp->is_scrubbing();
 950         return false;
 951 }
 952
 953 void AudioContainer::start_scrubbing(double t)
 954 {
 955         if(imp) imp->start_scrubbing(t);
 956 }
 957
 958 void AudioContainer::stop_scrubbing()
 959 {
 960         if(imp) imp->stop_scrubbing();
 961 }
 962
 963 void AudioContainer::scrub(double t)
 964 {
 965         if(imp) imp->scrub(t);
 966 }
 967
 968 double AudioContainer::scrub_time() const
 969 {
 970         if(imp) return imp->scrub_time();
 971         else return 0;
 972 }
 973
 974 bool AudioContainer::isRunning() const
 975 {
 976         if(imp) return imp->isRunning();
 977         else return false;
 978 }
 979
 980 bool AudioContainer::isPaused() const
 981 {
 982         if(imp) return imp->isPaused();
 983         else return false;
 984 }
 985
 986 //----------- Audio imp information -------------------
 987
 988 bool studio::AudioContainer::AudioImp::load(const std::string &filename,
 989                                                                                         const std::string &filedirectory)
 990 {
 991         clear();
 992
 993         #ifdef WITH_FMOD
 994
 995         //And continue with the sound loading...
 996         string  file = filename;
 997
 998         //Trivial reject... (fixes stat call problem... where it just looks at directory and not file...)
 999         if(file.length() == 0) return false;
1000
1001         //we don't need the file directory?
1002         if(!is_absolute_path(file))
1003         {
1004                 file=filedirectory+filename;
1005                 synfig::warning("Not absolute hoooray");
1006         }
1007         synfig::info("Loading Audio file: %s", file.c_str());
1008
1009         //check to see if file exists
1010         {
1011                 struct stat     s;
1012                 if(stat(file.c_str(),&s) == -1 && errno == ENOENT)
1013                 {
1014                         synfig::info("There was no audio file...");
1015                         return false;
1016                 }
1017         }
1018
1019         //load fmod if we can...
1020         //synfig::warning("I'm compiled with FMOD!");
1021         fmodinit.addref();
1022
1023         //load the stream
1024         int ch = FSOUND_FREE;
1025         FSOUND_SAMPLE *sm = FSOUND_Sample_Load(FSOUND_FREE,file.c_str(),FSOUND_LOOP_OFF|FSOUND_MPEGACCURATE,0,0);
1026
1027         if(!sm)
1028         {
1029                 synfig::warning("Could not open the audio file as a sample: %s",file.c_str());
1030                 goto error;
1031         }
1032
1033         //synfig::warning("Opened a file as a sample! :)");
1034
1035         /*{
1036                 int bufferlen = FSOUND_DSP_GetBufferLength();
1037                 synfig::info("Buffer length = %d samples, %.3lf s",bufferlen, bufferlen / (double)FSOUND_GetOutputRate());
1038         }*/
1039
1040         //set all the variables since everything has worked out...
1041         //get the length of the stream
1042         {
1043                 length = FSOUND_Sample_GetLength(sm);
1044
1045                 int volume = 0;
1046                 FSOUND_Sample_GetDefaults(sm,&sfreq,&volume,0,0);
1047
1048                 //double len = length / (double)sfreq;
1049                 //synfig::info("Sound info: %.2lf s long, %d Hz, %d Vol",(double)length,sfreq,volume);
1050         }
1051
1052         //synfig::warning("Got all info, and setting up everything, %.2f sec.", length);
1053         //synfig::warning("     BigSample: composed of %d samples", FSOUND_Sample_GetLength(sm));
1054         synfig::info("Successfully opened %s as a sample and initialized it.",file.c_str());
1055
1056         //set up the playable info
1057         sample = sm;
1058         channel = ch;
1059
1060         //the length and sfreq params have already been initialized
1061
1062         return true;
1063
1064 error:
1065         if(sm) FSOUND_Sample_Free(sm);
1066         file = "";
1067
1068         fmodinit.decref();
1069
1070         return false;
1071
1072         #else
1073         return false;
1074         #endif
1075 }
1076
1077 void studio::AudioContainer::AudioImp::play(double t)
1078 {
1079         #ifdef WITH_FMOD
1080         if(!sample) return;
1081
1082         //stop scrubbing if we are...
1083         if(is_scrubbing()) stop_scrubbing();
1084
1085         //t -= offset;
1086         t -= get_offset();
1087         playing = true;
1088
1089         if(t < 0)
1090         {
1091                 unsigned int timeout = (int)floor(-t * 1000 + 0.5);
1092                 //synfig::info("Playing audio delayed by %d ms",timeout);
1093                 //delay for t seconds...
1094                 delaycon = Glib::signal_timeout().connect(
1095                                                 sigc::mem_fun(*this,&studio::AudioContainer::AudioImp::start_playing_now),timeout);
1096
1097                 init_play();
1098                 FSOUND_SetFrequency(channel,sfreq);
1099                 FSOUND_SetCurrentPosition(channel,0);
1100                 return;
1101         }
1102
1103         unsigned int position = (int)floor(t*sfreq + 0.5);
1104
1105         if(position >= FSOUND_Sample_GetLength(sample))
1106         {
1107                 synfig::warning("Can't play audio when past length...");
1108                 return;
1109         }
1110
1111         init_play();
1112         FSOUND_SetFrequency(channel,sfreq);
1113         FSOUND_SetCurrentPosition(channel,position);
1114         FSOUND_SetPaused(channel,false);
1115
1116         //synfig::info("Playing audio with position %d samples",position);
1117
1118         #endif
1119 }
1120
1121 void studio::AudioContainer::AudioImp::stop()
1122 {
1123         delaycon.disconnect();
1124
1125         #ifdef WITH_FMOD
1126         if(fmodinit.is_loaded() && playing && isRunning())
1127         {
1128                 FSOUND_SetPaused(channel,true);
1129         }
1130         #endif
1131
1132         playing = false;
1133 }
1134
1135 void studio::AudioContainer::AudioImp::clear()
1136 {
1137         #ifdef WITH_FMOD
1138         delaycon.disconnect();
1139
1140         stop();
1141         stop_scrubbing();
1142
1143         if(sample)
1144         {
1145                 if(FSOUND_IsPlaying(channel))
1146                 {
1147                         FSOUND_StopSound(channel);
1148                 }
1149                 channel = FSOUND_FREE;
1150                 FSOUND_Sample_Free(sample);
1151                 fmodinit.decref();
1152         }
1153
1154         playing = false;
1155
1156         #else
1157         channel = 0;
1158         #endif
1159
1160         sample = 0;
1161         playing = false;
1162 }
1163
1164 void AudioContainer::AudioImp::start_scrubbing(double t)
1165 {
1166         //synfig::info("Start scrubbing: %lf", t);
1167         if(playing) stop();
1168
1169         set_scrubbing(true);
1170
1171         #ifdef WITH_FMOD
1172         //make sure the other one is not scrubbing...
1173         if(g_scrubdata.scrub)
1174         {
1175                 *g_scrubdata.scrub = 0; //nullify the pointer...
1176         }
1177
1178         //Set up the initial state for the delayed audio position
1179         scrinfo.delaystart = 0;
1180         scrinfo.pos = 0;
1181         scrinfo.deltatime = 0;
1182
1183         //set it to point to our pointer (dizzy...)
1184         g_scrubdata.scrub = &scrptr;
1185
1186         //setup position info so we can know what to do on boundary conditions...
1187         curscrubpos = (t - get_offset()) * sfreq;
1188
1189         //So we can get an accurate difference...
1190         timer.reset();
1191
1192         //reposition the sound if it won't be when scrubbed (if it's already in the range...)
1193         int curi = (int)curscrubpos;
1194         if(curi >= 0 && curi < length)
1195         {
1196                 init_play();
1197                 FSOUND_SetCurrentPosition(channel,curi);
1198
1199                 //Set the values...
1200                 scrinfo.pos = curscrubpos;
1201                 scrinfo.delaystart = delay_factor*buffer_length_sec;
1202
1203                 //synfig::info("\tStarting at %d samps, with %d p %.3f delay",
1204                 //                              FSOUND_GetCurrentPosition(channel), (int)scrinfo.pos, scrinfo.delaystart);
1205         }
1206
1207
1208
1209         //enable the dsp...
1210         //synfig::info("\tActivating DSP");
1211         FSOUND_DSP_SetActive(scrubdspunit,true);
1212         #endif
1213 }
1214
1215 void AudioContainer::AudioImp::stop_scrubbing()
1216 {
1217         //synfig::info("Stop scrubbing");
1218
1219         if(is_scrubbing())
1220         {
1221                 set_scrubbing(false);
1222
1223                 #ifdef WITH_FMOD
1224                 g_scrubdata.scrub = 0;
1225
1226                 //stop the dsp...
1227                 //synfig::info("\tDeactivating DSP");
1228                 FSOUND_DSP_SetActive(scrubdspunit,false);
1229                 if(FSOUND_IsPlaying(channel)) FSOUND_SetPaused(channel,true);
1230                 #endif
1231         }
1232
1233         curscrubpos = 0;
1234 }
1235
1236 void AudioContainer::AudioImp::scrub(double t)
1237 {
1238         #ifdef WITH_FMOD
1239         //synfig::info("Scrub to %lf",t);
1240         if(is_scrubbing())
1241         {
1242                 //What should we do?
1243
1244                 /* Different special cases
1245                         All outside, all inside,
1246                         coming in (left or right),
1247                         going out (left or right)
1248                 */
1249                 double oldpos = curscrubpos;
1250                 double newpos = (t - get_offset()) * sfreq;
1251
1252                 curscrubpos = newpos;
1253
1254                 //Ok the sound is running, now we need to tweek it
1255                 if(newpos > oldpos)
1256                 {
1257                         //Outside so completely stopped...
1258                         if(newpos < 0 || oldpos >= length)
1259                         {
1260                                 //synfig::info("\tOut +");
1261                                 if(FSOUND_IsPlaying(channel))
1262                                 {
1263                                         FSOUND_SetPaused(channel,true);
1264                                 }
1265
1266                                 //Zero out the data!
1267                                 scrinfo.Lock();
1268                                 scrinfo.delaystart = 0;
1269                                 scrinfo.deltatime = 0;
1270                                 scrinfo.Unlock();
1271
1272                                 return;
1273                         }
1274
1275                         //going in? - start the sound at the beginning...
1276                         /*else if(oldpos < 0)
1277                         {
1278                                 //Set up the sound to be playing paused at the start...
1279                                 init_play();
1280                                 FSOUND_SetCurrentPosition(channel,0);
1281
1282                                 synfig::info("\tIn + %d", FSOUND_GetCurrentPosition(channel));
1283
1284                                 scrinfo.Lock();
1285                                 scrinfo.pos = 0;
1286                                 scrinfo.delaystart = delay_factor*buffer_length_sec;
1287                                 scrinfo.deltatime = 0;
1288                                 scrinfo.Unlock();
1289                         }*/
1290                         //don't need to deal with leaving... automatically dealt with...
1291
1292                         else //We're all inside...
1293                         {
1294                                 //Set new position and decide what to do with time...
1295                                 scrinfo.Lock();
1296                                 scrinfo.pos = newpos;
1297
1298                                 //should we restart the delay cycle... (is it done?)
1299                                 if(!isRunning() || (scrinfo.delaystart <= 0 && scrinfo.deltatime <= 0 && isPaused()))
1300                                 {
1301                                         //synfig::info("Starting + at %d",(int)newpos);
1302                                         scrinfo.deltatime = 0;
1303                                         scrinfo.delaystart = delay_factor*buffer_length_sec;
1304                                         scrinfo.Unlock();
1305
1306                                         //Set up the sound paused at the current position
1307                                         init_play();
1308                                         int setpos = min(max((int)newpos,0),length);
1309                                         FSOUND_SetCurrentPosition(channel,setpos);
1310                                         timer.reset();
1311                                         return;
1312                                 }
1313
1314                                 //No! just increment the time delta...
1315                                 scrinfo.deltatime += timer.pop_time();
1316
1317                                 //Nope... continue and just increment the deltatime and reset position...
1318                                 scrinfo.Unlock();
1319
1320                                 //set channel and unpause
1321                                 FSOUND_SetPaused(channel,false);
1322                                 scrinfo.channel = channel;
1323
1324                         }
1325                 }else if(newpos < oldpos)
1326                 {
1327                         //completely stopped...
1328                         if(newpos >= length || oldpos < 0)
1329                         {
1330                                 //synfig::info("Out -");
1331                                 if(FSOUND_IsPlaying(channel))
1332                                 {
1333                                         FSOUND_SetPaused(channel,true);
1334                                 }
1335
1336                                 //Zero out the data!
1337                                 scrinfo.Lock();
1338                                 scrinfo.delaystart = 0;
1339                                 scrinfo.deltatime = 0;
1340                                 scrinfo.Unlock();
1341                         }
1342
1343                         //going in? - start going backwards at the end...
1344                         /*else if(oldpos >= length)
1345                         {
1346                                 synfig::info("In -");
1347                                 //Set up the sound to be playing paused at the start...
1348                                 init_play();
1349                                 FSOUND_SetCurrentPosition(channel,length-1);
1350
1351                                 scrinfo.Lock();
1352                                 scrinfo.pos = length-1;
1353                                 scrinfo.delaystart = delay_factor*buffer_length_sec;
1354                                 scrinfo.deltatime = 0;
1355                                 scrinfo.Unlock();
1356                         }*/
1357                         //we don't have to worry about the leaving case...
1358
1359                         else //We're all inside...
1360                         {
1361                                 //Set new position and decide what to do with time...
1362                                 scrinfo.Lock();
1363                                 scrinfo.pos = newpos;
1364
1365                                 //should we restart the delay cycle... (is it done?)
1366                                 if(!isRunning() ||(scrinfo.delaystart <= 0 && scrinfo.deltatime <= 0 && isPaused()))
1367                                 {
1368                                         //synfig::info("Starting - at %d",(int)newpos);
1369                                         scrinfo.deltatime = 0;
1370                                         scrinfo.delaystart = delay_factor*buffer_length_sec;
1371                                         scrinfo.Unlock();
1372
1373                                         //reset timing so next update will be a valid diff...
1374                                         init_play();
1375                                         int setpos = min(max((int)newpos,0),length);
1376                                         FSOUND_SetCurrentPosition(channel,setpos);
1377                                         timer.reset();
1378                                         return;
1379                                 }
1380
1381                                 //No! just increment the time delta...
1382                                 scrinfo.deltatime += timer.pop_time();
1383
1384                                 //Nope... continue and just increment the deltatime and reset position...
1385                                 scrinfo.Unlock();
1386
1387                                 //set channel and unpause
1388                                 FSOUND_SetPaused(channel,false);
1389                                 scrinfo.channel = channel;
1390                         }
1391                 }
1392         }
1393         #endif
1394 }