#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <math.h>

#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xvlib.h>

#include <alsa/asoundlib.h>
#include <sys/time.h>
#include <sys/ipc.h>
#include <sys/shm.h>

#include "libzmpeg3/libzmpeg3.h"
#include "thr.h"

//c++ -pthread -I.. -I../db x.C ./x86_64/libzmpeg3.a ../db/x86_64/db.a -lX11 -lasound -lm
//c++ -g -pthread -I.. -I../db x.C ./x86_64/libzmpeg3.a ../db/x86_64/db.a -lX11 -lXext -lasound -lm

using namespace std;
int building = getenv("BUILDING") ? 1 : 0;

zmpeg3_t *ysrc;

const double nudge = 0.0;
const double ahead = 0.0;
static int verbose = 0;


//#define AUDIO
#define VIDEO
//#define DB
//#define LAST8M

#ifdef DB
#include "db.h"
#include "s.C"
#endif

#ifdef AUDIO
snd_pcm_t *zpcm = 0;
snd_pcm_uframes_t zpcm_ufrm_size = 0;
snd_pcm_sframes_t zpcm_sbfr_size = 0;
snd_pcm_sframes_t zpcm_sper_size = 0;
snd_pcm_sframes_t zpcm_total_samples = 0;
double zpcm_play_time = 0.;
Mutex zpcm_lock;
unsigned int zpcm_rate = 0;
static const char *zpcm_device = "plughw:0,0";
static unsigned int zpcm_bfr_time_us = 500000; 
static unsigned int zpcm_per_time_us = 200000;
static snd_pcm_channel_area_t *zpcm_areas = 0;
static int zpcm_channels = 0;
static short **zpcm_buffers = 0;
static short *zpcm_samples = 0;

void alsa_close()
{
  if( zpcm_buffers != 0 ) { delete [] zpcm_buffers; zpcm_buffers = 0; }
  if( zpcm_areas != 0 ) { delete [] zpcm_areas; zpcm_areas = 0; }
  if( zpcm_samples != 0 ) { delete [] zpcm_samples; zpcm_samples = 0; }
  if( zpcm != 0 ) { snd_pcm_close(zpcm);  zpcm = 0; }
}

void alsa_open(int chs,int rate)
{
  int ich, bits, byts, dir, ret;
  zpcm_lock.reset();
  snd_pcm_format_t fmt = SND_PCM_FORMAT_S16;
  snd_pcm_hw_params_t *phw;
  snd_pcm_sw_params_t *psw;
  snd_pcm_hw_params_alloca(&phw);
  snd_pcm_sw_params_alloca(&psw);

  zpcm = 0;
  zpcm_total_samples = 0;
  zpcm_play_time = 0.;
  ret = snd_pcm_open(&zpcm, zpcm_device,
     SND_PCM_STREAM_PLAYBACK, 0 /* + SND_PCM_NONBLOCK */);
  if( ret >= 0 )
    ret = snd_pcm_hw_params_any(zpcm, phw);
  if( ret >= 0 )
    ret = snd_pcm_hw_params_set_rate_resample(zpcm, phw, 1);
  if( ret >= 0 )
    ret = snd_pcm_hw_params_set_access(zpcm, phw,
      SND_PCM_ACCESS_RW_NONINTERLEAVED);
  if( ret >= 0 )
    ret = snd_pcm_hw_params_set_format(zpcm, phw, fmt);
  if( ret >= 0 ) {
    zpcm_channels = chs;
    ret = snd_pcm_hw_params_set_channels(zpcm, phw, chs);
  }
  if( ret >= 0 ) {
    zpcm_rate = rate;
    ret = snd_pcm_hw_params_set_rate_near(zpcm, phw, &zpcm_rate, 0);
    if( (int)zpcm_rate != rate )
      printf("nearest audio_rate for %d is %u\n",rate,zpcm_rate);
  }
  if( ret >= 0 )
    ret = snd_pcm_hw_params_set_buffer_time_near(zpcm, phw,
      &zpcm_bfr_time_us, &dir);
  if( ret >= 0 )
    ret = snd_pcm_hw_params_get_buffer_size(phw, &zpcm_ufrm_size);
  if( ret >= 0 ) {
    zpcm_sbfr_size = zpcm_ufrm_size;
    ret = snd_pcm_hw_params_set_period_time_near(zpcm, phw,
      &zpcm_per_time_us, &dir);
  }
  if( ret >= 0 )
    ret = snd_pcm_hw_params_get_period_size(phw, &zpcm_ufrm_size, &dir);
  if( ret >= 0 ) {
    zpcm_sper_size = zpcm_ufrm_size;
    ret = snd_pcm_hw_params(zpcm, phw);
  }
  if( ret >= 0 )
    ret = snd_pcm_sw_params_current(zpcm, psw);
  if( ret >= 0 )
    ret = snd_pcm_sw_params_set_start_threshold(zpcm, psw,
      (zpcm_sbfr_size / zpcm_sper_size) * zpcm_sper_size);
  if( ret >= 0 )
    ret = snd_pcm_sw_params_set_avail_min(zpcm, psw, zpcm_sper_size);
  if( ret >= 0 )
    ret = snd_pcm_sw_params(zpcm, psw);
  /* snd_pcm_dump(zpcm, stdout); */

  if( ret >= 0 ) {
     zpcm_areas = new snd_pcm_channel_area_t[chs];
     bits = snd_pcm_format_physical_width(fmt);
     byts = (bits+7) / 8;
     zpcm_samples = new short[zpcm_sper_size * chs * (byts+1)/2];
     zpcm_buffers = new short *[chs];
     if( zpcm_samples ) {
       for( ich = 0; ich < chs; ++ich ) {
         zpcm_areas[ich].addr = zpcm_samples;
         zpcm_areas[ich].first = ich * zpcm_sper_size * bits;
         zpcm_areas[ich].step = bits;
         zpcm_buffers[ich] = zpcm_samples + ich*zpcm_sper_size;
       }
     }
     else {
       fprintf(stderr,"alsa sample buffer allocation failure.\n");
       ret = -999;
     }
  }
  if( ret < 0 ) {
    if( ret > -999 )
      printf("audio error: %s\n", snd_strerror(ret));
    alsa_close();
  }
}

short *alsa_bfr(int ch) { return zpcm_buffers[ch]; }
int alsa_bfrsz() { return zpcm_sper_size; }

int alsa_recovery(int ret)
{
  printf("alsa recovery\n");
  switch( ret ) {
  case -ESTRPIPE:
    /* wait until the suspend flag is released, then fall through */
    while( (ret=snd_pcm_resume(zpcm)) == -EAGAIN ) usleep(100000);
  case -EPIPE:
    ret = snd_pcm_prepare(zpcm);
    if( ret < 0 )
      printf("underrun, prepare failed: %s\n", snd_strerror(ret));
    break;
  default:
    printf("unhandled error: %s\n",snd_strerror(ret));
    break;
  }
  return ret;
}

int alsa_write(int length)
{
  struct timeval tv;
  int i, ret, count, retry;
  snd_pcm_sframes_t sample_delay;
  double play_time, time;
  short *bfrs[zpcm_channels];
  retry = 3;
  ret = count = 0;
  for( i=0; i<zpcm_channels; ++i ) bfrs[i] = zpcm_buffers[i];

  while( count < length ) {
    ret = snd_pcm_writen(zpcm,(void **)bfrs, length-count);
    if( ret == -EAGAIN ) continue;
    if ( ret < 0 ) {
      if( --retry < 0 ) return ret;
      alsa_recovery(ret);
      ret = 0;
      continue;
    }
    for( i=0; i<zpcm_channels; ++i ) bfrs[i] += ret;
    count += ret;
  }
  zpcm_lock.lock();
  zpcm_total_samples += count;
  snd_pcm_delay(zpcm,&sample_delay);
  if( sample_delay > zpcm_total_samples )
    sample_delay = zpcm_total_samples;
  gettimeofday(&tv,NULL);
  time = tv.tv_sec + tv.tv_usec/1000000.0;
  play_time = (zpcm_total_samples - sample_delay) / (double)zpcm_rate;
  zpcm_play_time = time - play_time;
  zpcm_lock.unlock();
  return ret < 0 ? ret : 0;
}

double alsa_time()
{
  double time, play_time;
  struct timeval tv;
  zpcm_lock.lock();
  gettimeofday(&tv,NULL);
  time = tv.tv_sec + tv.tv_usec/1000000.0;
  play_time = time - zpcm_play_time;
  zpcm_lock.unlock();
  return play_time;
}

#else

double alsa_time()
{
  double time, play_time;
  struct timeval tv;
  gettimeofday(&tv,NULL);
  time = tv.tv_sec + tv.tv_usec/1000000.0;
  return time;
}

#endif


double tstart;

double the_time()
{
  double time;
  struct timeval tv;
  gettimeofday(&tv,NULL);
  time = tv.tv_sec + tv.tv_usec/1000000.0;
  if( tstart < 0. ) tstart = time;
  return time - tstart;
}


void mpeg3_stats(zmpeg3_t *zsrc)
{
  int astream, vstream;
  int has_audio, total_astreams, audio_channels, sample_rate;
  int has_video, total_vstreams, width, height, colormodel;
  long audio_samples, video_frames;
  float frame_rate;

  has_audio = mpeg3_has_audio(zsrc);
  printf(" has_audio = %d\n", has_audio);
  total_astreams = mpeg3_total_astreams(zsrc);
  printf(" total_astreams = %d\n", total_astreams);
  for( astream=0; astream<total_astreams; ++astream ) {
    audio_channels = zsrc->audio_channels(astream);
    printf("   audio_channels = %d\n", audio_channels);
    sample_rate = zsrc->sample_rate(astream);
    printf("   sample_rate = %d\n", sample_rate);
    audio_samples = zsrc->audio_samples(astream);
    printf("   audio_samples = %ld\n", audio_samples);
  }
  printf("\n");
  has_video = mpeg3_has_video(zsrc);
  printf(" has_video = %d\n", has_video);
  total_vstreams = mpeg3_total_vstreams(zsrc);
  printf(" total_vstreams = %d\n", total_vstreams);
  for( vstream=0; vstream<total_vstreams; ++vstream ) {
    width = zsrc->video_width(vstream);
    printf("   video_width = %d\n", width);
    height = zsrc->video_height(vstream);
    printf("   video_height = %d\n", height);
    frame_rate = zsrc->frame_rate(vstream);
    printf("   frame_rate = %f\n", frame_rate);
    video_frames = zsrc->video_frames(vstream);
    printf("   video_frames = %ld\n", video_frames);
    colormodel = zsrc->colormodel(vstream);
    printf("   colormodel = %d\n", colormodel);
  }
}

#ifdef DB

class mdb_q : public Condition {
  class pkt_q;
  class pkt_t;

  class pkt_t {
    pkt_t *next;
  public:
    friend class pkt_q;
    friend class mdb_q;

    long framenum;
    int len;
    uint8_t *bfr;

    uint8_t *dat() { return bfr; }
    pkt_t(int sz) { bfr = new uint8_t[sz]; }
    ~pkt_t() { delete [] bfr; }
  };

  class pkt_q : Mutex {
    pkt_t *list;
  public:
    friend class mdb_q;
    pkt_t *get();
    void put(pkt_t *p);

    pkt_q() : list(0) {}
    ~pkt_q() { for( pkt_t *p=list; p!=0; ) { list=p->next; delete p; } }
  } avail, packets;

public: 
  typedef pkt_t pkt;
  typedef pkt_q pktq;

  void init(int qsize, int bsize);
  pkt *avl_get() { return avail.get(); }
  void avl_put(pkt *p) { avail.put(p); }
  pkt *pkt_get() { return packets.get(); }
  void pkt_put(pkt *p) { packets.put(p); }

  mdb_q() {}
  ~mdb_q() {}
};

typedef mdb_q::pkt mdb_pkt;
typedef mdb_q::pktq mdb_pktq;


mdb_pkt *mdb_pktq::get()
{
  pkt_t *p = 0;
  lock();
  if( list ) {
    p = list->next;
    if( p == list ) list = 0;
    else list->next = p->next;
  }
  unlock();
  return p;
}

void mdb_pktq::put(mdb_pkt *p)
{
  lock();
  if( !list ) list = p;
  else p->next = list->next;
  list->next = p;
  list = p;
  unlock();
}

void mdb_q::init(int qsize, int bsize)
{
  pkt_t **qp = &avail.list;
  while( --qsize >= 0 ) {
    pkt_t *p = new pkt_t(bsize);
    *qp = p;  qp = &p->next;
  }
  *qp = avail.list;
}


class Media : public Thread {
public:
  theDb db;
  mdb_q q;

  void run();
  void newDb(const char *dfn);
  void openDb(const char *dfn);
  void closeDb();
  void add_key(uint8_t *dat, int sz, int id, double tm);
  void get_key(uint8_t *dat, int sz, int &id, double &tm);

  Media() { q.init(32,9600); }
  ~Media() {}
} *the_db;

void Media::newDb(const char *dfn)
{
  if( db.create(dfn) ) {
    fprintf(stderr,"Media::db.create failed\n");
    exit(1);
  }
}

void Media::openDb(const char *dfn)
{
  if( db.open(dfn) ) {
    fprintf(stderr,"Media::db.open failed\n");
    exit(1);
  }
}

void Media::closeDb()
{
  db.close();
}

void Media::add_key(uint8_t *dat, int sz, int id, double tm)
{
printf("add %d\n",id);
  db.prefix.Allocate();
  db.prefix.Clip_id(id);
  db.prefix.Time_offset(tm);
  int ksz = Db::mediaKey::byte_size(sz, 8);
  uint8_t *key = db.prefix._Key_data(ksz);
  Db::mediaKey::build(key, dat, 8, sz);
  db.prefix.Construct();
  db.commit();
}

void Media::get_key(uint8_t *dat, int sz, int &id, double &tm)
{
  int ksz = Db::mediaKey::byte_size(sz, 8);
  uint8_t key[ksz];
  Db::mediaKey::build(key, dat, 8, sz);
  int ret = PrefixLoc::ikey_Prefix_key_data(db.prefix,
      PrefixObj::t_Key_data(key, ksz)).Find();
  if( ret != 0 ) {
printf(" not found, ret = %d\n",ret);
    return;
  }

  id = db.prefix.Clip_id();
  tm = db.prefix.Time_offset();
printf("found id = %d\n",id);
}


void Media::run()
{
  if( building ) newDb("/tmp/dat/media.db");
  openDb("/tmp/dat/media.db");
  q.lock();

  while( !q.lock() && running() ) {
    mdb_pkt *p;
    while( (p=q.pkt_get()) != 0 ) {
      if( building ) {
        double tm = 0.0;  int id = p->framenum;
        add_key(p->dat(), p->len, id, tm);
      }
      else {
        double tm = 0.0;  int id = -1;
        get_key(p->dat(), p->len, id, tm);
      }
      q.avl_put(p);
    }
  }
  closeDb();
}

#endif

#ifdef VIDEO

class Video : public Thread {
  zmpeg3_t *zsrc;
  double vstart;
  double last_vtime;
  double video_time(int stream);

public:
  void run();

  Video(zmpeg3_t *z) : zsrc(z) {}
  ~Video() {}
} *the_video;


double Video::video_time(int stream)
{
  double vtime = zsrc->get_video_time(stream);
  double vnow = vtime;
  if( vstart == 0. ) vstart = vnow;
  if( vtime < last_vtime )
    vstart -= last_vtime;
  last_vtime = vtime;
  return vnow - vstart + nudge;
}

void Video::run()
{
  Window w, root;
  Display *display;
  GC gc;
  XGCValues gcv;
  XEvent xev;
  XImage *image0, *image1, *image;
  Visual *visual;
  Screen *screen;
  XShmSegmentInfo info0, info1;
  int done;
  double delay;
  float frame_rate, frame_delay;
  uint8_t **rows, **row0, **row1, *cap, *cap0, *cap1;
  int ret, row, frame, dropped, more_data;
  int width, height, depth, owidth, oheight;
  const int frame_drop = 0;
  const int shared_memory = 1;

  display = XOpenDisplay(NULL);
  if( display == NULL ) {
    fprintf(stderr,"cant open display\n");
    exit(1);
  }

  root = RootWindow(display,0);
  screen = DefaultScreenOfDisplay(display);
  depth = DefaultDepthOfScreen(screen);
  visual = DefaultVisualOfScreen(screen);
  if( visual->c_class != TrueColor ) {
    printf("visual class not truecolor\n");
    exit(1);
  }
  int image_bpp = 4;
 
  frame_rate = zsrc->frame_rate(0);
  frame_delay = 2.0 / frame_rate;
  height = zsrc->video_height(0);
  width = zsrc->video_width(0);

  //oheight = 2*height / 3;
  //owidth = 2*width / 3;
  //oheight = 1050-96;
  //owidth = 1680-64;
  //oheight = height;
  //owidth = width;
  oheight = 720;
  owidth = 1280;

  w = XCreateSimpleWindow(display, root, 0, 0, owidth, oheight,
          0, 0, WhitePixelOfScreen(screen));
  XSelectInput(display, w, ExposureMask|StructureNotifyMask|ButtonPressMask);

  if( !shared_memory ) {
    int sz0 = oheight*owidth*image_bpp + 4;
    cap0 = new uint8_t[sz0];
    image0 = XCreateImage(display, visual, depth, ZPixmap, 0,
               (char*)cap0, owidth, oheight, 8, owidth*4);
    int sz1 = oheight*owidth*image_bpp + 4;
    cap1 = new uint8_t[sz1];
    image1 = XCreateImage(display, visual, depth, ZPixmap, 0,
               (char*)cap1, owidth, oheight, 8, owidth*4);
  }
  else {
    image0 = XShmCreateImage(display, visual, depth, ZPixmap, 0,
               &info0, owidth, oheight);
    int sz0 = oheight*image0->bytes_per_line+image_bpp;
    info0.shmid = shmget(IPC_PRIVATE, sz0, IPC_CREAT | 0777);
    if( info0.shmid < 0) { perror("shmget"); exit(1); }
    cap0 = (uint8_t *)shmat(info0.shmid, NULL, 0);
    shmctl(info0.shmid, IPC_RMID, 0);
    image0->data = info0.shmaddr = (char *)cap0;
    info0.readOnly = 0;
    XShmAttach(display,&info0);
    image1 = XShmCreateImage(display, visual, depth, ZPixmap, 0,
               &info1, owidth, oheight);
    int sz1 = oheight*image1->bytes_per_line+image_bpp;
    info1.shmid = shmget(IPC_PRIVATE, sz1, IPC_CREAT | 0777);
    if( info1.shmid < 0) { perror("shmget"); exit(1); }
    cap1 = (uint8_t *)shmat(info1.shmid, NULL, 0);
    shmctl(info1.shmid, IPC_RMID, 0);
    image1->data = info1.shmaddr = (char *)cap1;
    info1.readOnly = 0;
    XShmAttach(display,&info1);
  }

  row0 = new uint8_t *[oheight];
  row1 = new uint8_t *[oheight];
  for( row=0; row<oheight; ++row ) {
    row0[row] = cap0 + row*owidth*image_bpp;
    row1[row] = cap1 + row*owidth*image_bpp;
  }

  cap = cap0;
  rows = row0;
  image = image0;
  if( image->bits_per_pixel != 32 ) {
    printf("image bits_per_pixel=%d\n",image->bits_per_pixel);
    exit(1);
  }
  int cmdl = -1;
  unsigned int rmsk = image->red_mask;
  unsigned int gmsk = image->green_mask;
  unsigned int bmsk = image->blue_mask;
  switch( image_bpp ) {
  case 4:
    if( bmsk==0xff0000 && gmsk==0x00ff00 && rmsk==0x0000ff )
      cmdl = zmpeg3_t::cmdl_RGBA8888;
    else if( bmsk==0x0000ff && gmsk==0x00ff00 && rmsk==0xff0000 )
      cmdl = zmpeg3_t::cmdl_BGRA8888;
    break;
  case 3:
    if( bmsk==0xff0000 && gmsk==0x00ff00 && rmsk==0x0000ff )
      cmdl = zmpeg3_t::cmdl_RGB888;
    else if( bmsk==0x0000ff && gmsk==0x00ff00 && rmsk==0xff0000 )
      cmdl = zmpeg3_t::cmdl_BGR888;
    break;
  case 2:
    if( bmsk==0x00f800 && gmsk==0x0007e0 && rmsk==0x00001f )
      cmdl = zmpeg3_t::cmdl_RGB565;
    break;
  }
  if( cmdl < 0 ) {
    printf("unknown color model, bpp=%d, ",image_bpp);
    printf(" rmsk=%08x,gmsk=%08x,bmsk=%08x\n", rmsk, gmsk, bmsk);
    exit(1);
  }

  XMapWindow(display, w);
  XFlush(display);
  gcv.function = GXcopy;
  gcv.foreground = BlackPixelOfScreen(DefaultScreenOfDisplay(display));
  gcv.line_width = 1;
  gcv.line_style = LineSolid;
  int m = GCFunction|GCForeground|GCLineWidth|GCLineStyle;
  gc = XCreateGC(display,w,m,&gcv);

  frame = dropped = 0;
  vstart = last_vtime = 0.;
  more_data = 1;
  done = 0;

  while( !done && running() && more_data ) {
    if( !XPending(display) ) {
      more_data = 0;
      delay = (frame+dropped)/frame_rate - alsa_time();
//      delay = the_time() - video_time(zsrc,0);
      if( frame_drop ) {
        if( -delay >= frame_delay ) {
          int nframes = (long)ceil(-delay/frame_rate);
          if( nframes > 2 ) nframes = 2;
          zsrc->drop_frames(nframes,0);
          dropped += nframes;
        }
      }
      //printf("delay %f\n",delay*1000.);
      if( delay > 0 )
        usleep((int)(delay*1000000.0));
      ret = zsrc->read_frame(rows, 0, 0, width, height,
               owidth, oheight, cmdl, 0);
      //printf("%d %ld\n",frame,zsrc->vtrack[0]->demuxer->titles[0]->fs->current_byte);
      if( verbose )
        printf("read_video(stream=%d, frame=%d) = %d, %f sec\n", 0, frame, ret, the_time());
      ++frame;

      if( !shared_memory )
        XPutImage(display, w, gc, image, 0, 0, 0, 0, owidth, oheight);
      else
        XShmPutImage(display, w, gc, image, 0, 0, 0, 0, owidth, oheight, False);

#ifdef DB
      mdb_pkt *p = the_db->q.avl_get();
      if( p ) {
        uint8_t *bp;  int w, h, frn;
        zsrc->get_thumbnail(0,frn,bp,w,h);
        p->framenum = frn;
printf("put %d\n",frame);
        uint8_t *bfr = p->dat();
        memcpy(bfr,bp,p->len=w*h);
        the_db->q.pkt_put(p);
        the_db->q.unlock();
      }
#endif

      cap = cap==cap0 ?
        (rows=row1, image=image1, cap1) :
        (rows=row0, image=image0, cap0) ;
      //printf(" %d/%d  %f  %f  %f\n",frame,dropped,(frame+dropped)/frame_rate,
      //  video_time(zsrc,0),zsrc->get_video_time(0));
      more_data |= !zsrc->end_of_video(0);
    }
    else {
      XNextEvent(display,&xev);
      /* printf("xev.type = %d/%08x\n",xev.type,xev.xany.window); */
      switch( xev.type ) {
      case ButtonPress:
        if( xev.xbutton.window != w ) continue;
        if( xev.xbutton.button != Button1 )
          done = 1;
        break;
      case Expose:
        break;
      case DestroyNotify:
        done = 1;
        break;
      }
    }
  }

  XCloseDisplay(display);
  delete [] row0; row0 = 0;
  delete [] row1; row1 = 0;
}

#endif

#ifdef AUDIO

class Audio : public Thread {
  zmpeg3_t *zsrc;
  double astart;
  double audio_time(int stream);

public:
  void run();

  Audio(zmpeg3_t *z) : zsrc(z) {}
  ~Audio() {}
} *the_audio;


double Audio::audio_time(int stream)
{
  double anow = zsrc->get_audio_time(stream);
  if( astart < 0. ) astart = anow;
  return anow - astart;
}

void Audio::run()
{
  double delay;
  int audio_channels, sample_rate, more_data;
  int stream = 0;

  audio_channels = zsrc->audio_channels(stream);
  sample_rate = zsrc->sample_rate(stream);
  alsa_open(audio_channels,sample_rate);
  astart = -1.;
  more_data = 1;

  while( running() && more_data ) {
    more_data = 0;
    int ich;
    int n = alsa_bfrsz();
    for( ich=0; ich<audio_channels; ++ich) {
      short *bfr = alsa_bfr(ich);
      int ret = ich == 0 ?
        zsrc->read_audio(bfr, ich, n, stream) :
        zsrc->reread_audio(bfr, ich, n, stream);
      if( verbose )
        printf("read_audio(stream=%d,channel=%d) = %d\n", stream, ich, ret);
    }

    alsa_write(n);
    delay = audio_time(stream) - the_time();
    if( (delay-=ahead) > 0. ) {
      usleep((int)(delay*1000000.0/2.));
    }
    more_data |= !zsrc->end_of_audio(0);
  }

  alsa_close();
}

#endif

void sigint(int n)
{
#ifdef VIDEO
  the_video->cancel();
#endif
#ifdef AUDIO
  the_audio->cancel();
#endif
#ifdef DB
  the_db->cancel();
#endif
}


int main(int ac, char **av)
{
  int ret;
  long pos;
#ifdef LAST8M
  struct stat st_buf;
#endif
  setbuf(stdout,NULL);
  tstart = -1.;

#ifdef VIDEO
  XInitThreads();
#endif

  zmpeg3_t* zsrc = new zmpeg3_t(av[1],ret);
  ysrc = zsrc;
  printf(" ret = %d\n",ret);
  if( ret != 0 ) exit(1);
  mpeg3_stats(zsrc);

  zsrc->set_cpus(8);
  pos = 0;
#ifdef LAST8M
  if( stat(zsrc->fs->path, &st_buf) >= 0 ) {
    if( (pos = (st_buf.st_size & ~0x7ffl) - 0x800000l) < 0 )
      pos = 0;
  }
#endif
  zsrc->seek_byte(pos);
//  zsrc->show_subtitle(0);
  signal(SIGINT,sigint);

#ifdef DB
  the_db = new Media();
#endif
#ifdef AUDIO
  the_audio = new Audio(zsrc);
#endif
#ifdef VIDEO
  the_video = new Video(zsrc);
#endif
#ifdef DB
  the_db->start();
#endif
#ifdef AUDIO
  the_audio->start();
#endif
#ifdef VIDEO
  the_video->start();
#endif
#ifdef VIDEO
  the_video->join();
#endif
#ifdef AUDIO
  the_audio->join();
#endif
#ifdef DB
  the_db->join();
#endif

  delete zsrc;
  return 0;
}