mpv/libmpdemux/cdda.c

#include "config.h"

#ifdef HAVE_CDDA

#include "stream.h"
#include "../m_option.h"
#include "../m_struct.h"

#include <stdio.h>
#include <stdlib.h>
#include "demuxer.h"

#include "cdd.h"

static struct cdda_params {
  int speed;
  int paranoia_mode;
  char* generic_dev;
  int sector_size;
  int search_overlap;
  int toc_bias;
  int toc_offset;
  int no_skip;
  char* device;
  m_span_t span;
} cdda_dflts = {
  -1,
  1,
  NULL,
  0,
  -1,
  0,
  0,
  0,
  DEFAULT_CDROM_DEVICE,
  { 0, 0 }
};

#define ST_OFF(f) M_ST_OFF(struct cdda_params,f)
m_option_t cdda_params_fields[] = {
  { "speed", ST_OFF(speed), CONF_TYPE_INT, M_OPT_RANGE,1,100, NULL },
  { "paranoia", ST_OFF(paranoia_mode), CONF_TYPE_INT,M_OPT_RANGE, 0, 2, NULL },
  { "generic-dev", ST_OFF(generic_dev), CONF_TYPE_STRING, 0, 0, 0, NULL },
  { "sector-size", ST_OFF(sector_size), CONF_TYPE_INT, M_OPT_RANGE,1,100, NULL },
  { "overlap", ST_OFF(search_overlap), CONF_TYPE_INT, M_OPT_RANGE,0,75, NULL },
  { "toc-bias", ST_OFF(toc_bias), CONF_TYPE_INT, 0, 0, 0, NULL },
  { "toc-offset", ST_OFF(toc_offset), CONF_TYPE_INT, 0, 0, 0, NULL },
  { "noskip", ST_OFF(no_skip), CONF_TYPE_FLAG, 0 , 0, 1, NULL },
  { "skip", ST_OFF(no_skip), CONF_TYPE_FLAG, 0 , 1, 0, NULL },
  { "device", ST_OFF(device), CONF_TYPE_STRING, 0, 0, 0, NULL },
  { "span",  ST_OFF(span), CONF_TYPE_OBJ_PARAMS, 0, 0, 0, &m_span_params_def },
  /// For url parsing
  { "hostname", ST_OFF(span), CONF_TYPE_OBJ_PARAMS, 0, 0, 0, &m_span_params_def },
  { "port", ST_OFF(speed), CONF_TYPE_INT, M_OPT_RANGE,1,100, NULL },
  { "filename", ST_OFF(device), CONF_TYPE_STRING, 0, 0, 0, NULL },
  {NULL, NULL, 0, 0, 0, 0, NULL}
};
static struct m_struct_st stream_opts = {
  "cdda",
  sizeof(struct cdda_params),
  &cdda_dflts,
  cdda_params_fields
};

/// We keep these options but now they set the defaults
m_option_t cdda_opts[] = {
  { "speed", &cdda_dflts.speed, CONF_TYPE_INT, M_OPT_RANGE,1,100, NULL },
  { "paranoia", &cdda_dflts.paranoia_mode, CONF_TYPE_INT,M_OPT_RANGE, 0, 2, NULL },
  { "generic-dev", &cdda_dflts.generic_dev, CONF_TYPE_STRING, 0, 0, 0, NULL },
  { "sector-size", &cdda_dflts.sector_size, CONF_TYPE_INT, M_OPT_RANGE,1,100, NULL },
  { "overlap", &cdda_dflts.search_overlap, CONF_TYPE_INT, M_OPT_RANGE,0,75, NULL },
  { "toc-bias", &cdda_dflts.toc_bias, CONF_TYPE_INT, 0, 0, 0, NULL },
  { "toc-offset", &cdda_dflts.toc_offset, CONF_TYPE_INT, 0, 0, 0, NULL },
  { "noskip", &cdda_dflts.no_skip, CONF_TYPE_FLAG, 0 , 0, 1, NULL },
  { "skip", &cdda_dflts.no_skip, CONF_TYPE_FLAG, 0 , 1, 0, NULL },
  { "device", &cdda_dflts.device, CONF_TYPE_STRING, 0, 0, 0, NULL },
  { "span", &cdda_dflts.span, CONF_TYPE_OBJ_PARAMS, 0, 0, 0, &m_span_params_def },
  {NULL, NULL, 0, 0, 0, 0, NULL}
};

extern int cddb_resolve(const char *dev, char **xmcd_file);
extern cd_info_t* cddb_parse_xmcd(char *xmcd_file);

static int seek(stream_t* s,off_t pos);
static int fill_buffer(stream_t* s, char* buffer, int max_len);
static void close(stream_t* s);

static int open_cdda(stream_t *st,int m, void* opts, int* file_format) {
  struct cdda_params* p = (struct cdda_params*)opts;
  int mode = p->paranoia_mode;
  int offset = p->toc_offset;
  cdrom_drive* cdd = NULL;
  cdda_priv* priv;
  cd_info_t *cd_info,*cddb_info = NULL;
  unsigned int audiolen=0;
  int i;
  char *xmcd_file = NULL;

  if(m != STREAM_READ) {
    m_struct_free(&stream_opts,opts);
    return STREAM_UNSUPORTED;
  }

#ifdef STREAMING
  if(strncmp(st->url,"cddb",4) == 0) {
    i = cddb_resolve(p->device, &xmcd_file);
    if(i == 0) {
      cddb_info = cddb_parse_xmcd(xmcd_file);
      free(xmcd_file);
    }
  }
#endif
  
  if(p->generic_dev)
    cdd = cdda_identify_scsi(p->generic_dev,p->device,0,NULL);
  else
#if defined(__NetBSD__)
    cdd = cdda_identify_scsi(p->device,p->device,0,NULL);
#else
    cdd = cdda_identify(p->device,0,NULL);
#endif

  if(!cdd) {
    mp_msg(MSGT_OPEN,MSGL_ERR,"Can't open cdda device\n");
    m_struct_free(&stream_opts,opts);
    return STREAM_ERROR;
  }

  cdda_verbose_set(cdd, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);

  if(p->sector_size) {
    cdd->nsectors = p->sector_size;
    cdd->bigbuff = p->sector_size * CD_FRAMESIZE_RAW;
  }

  if(cdda_open(cdd) != 0) {
    mp_msg(MSGT_OPEN,MSGL_ERR,"Can't open disc\n");
    cdda_close(cdd);
    m_struct_free(&stream_opts,opts);
    return STREAM_ERROR;
  }

  cd_info = cd_info_new();
  mp_msg(MSGT_OPEN,MSGL_INFO,"Found Audio CD with %d tracks\n",cdda_tracks(cdd));
  for(i=0;i<cdd->tracks;i++) {
	  char track_name[80];
	  long sec=cdda_track_firstsector(cdd,i+1);
	  long off=cdda_track_lastsector(cdd,i+1)-sec+1;

	  sprintf(track_name, "Track %d", i+1);
	  cd_info_add_track(cd_info, track_name, i+1, (unsigned int)(off/(60*75)), (unsigned int)((off/75)%60), (unsigned int)(off%75), sec, off );
	  audiolen += off;
  }
  cd_info->min  = (unsigned int)(audiolen/(60*75));
  cd_info->sec  = (unsigned int)((audiolen/75)%60);
  cd_info->msec = (unsigned int)(audiolen%75);

  priv = (cdda_priv*)malloc(sizeof(cdda_priv));
  memset(priv, 0, sizeof(cdda_priv));
  priv->cd = cdd;
  priv->cd_info = cd_info;

  if(p->toc_bias)
    offset -= cdda_track_firstsector(cdd,1);

  if(offset) {
    int i;
    for(i = 0 ; i < cdd->tracks + 1 ; i++)
      cdd->disc_toc[i].dwStartSector += offset;
  }

  if(p->speed)
    cdda_speed_set(cdd,p->speed);

  if(p->span.start)
    priv->start_sector = cdda_track_firstsector(cdd,p->span.start);
  else
    priv->start_sector = cdda_disc_firstsector(cdd);

  if(p->span.end) {
    int last = cdda_tracks(cdd);
    if(p->span.end > last) p->span.end = last;
    priv->end_sector = cdda_track_lastsector(cdd,p->span.end);
  } else
    priv->end_sector = cdda_disc_lastsector(cdd);

  priv->cdp = paranoia_init(cdd);
  if(priv->cdp == NULL) {
    cdda_close(cdd);
    free(priv);
    cd_info_free(cd_info);
    m_struct_free(&stream_opts,opts);
    return STREAM_ERROR;
  }

  if(mode == 0)
    mode = PARANOIA_MODE_DISABLE;
  else if(mode == 1)
    mode = PARANOIA_MODE_OVERLAP;
  else
    mode = PARANOIA_MODE_FULL;
  
  if(p->no_skip)
    mode |= PARANOIA_MODE_NEVERSKIP;

  if(p->search_overlap >= 0)
    paranoia_overlapset(cdd,p->search_overlap);

  paranoia_seek(priv->cdp,priv->start_sector,SEEK_SET);
  priv->sector = priv->start_sector;

#ifdef STREAMING
  if(cddb_info) {
    cd_info_free(cd_info);
    priv->cd_info = cddb_info;
    cd_info_debug( cddb_info );
  }
#endif

  st->priv = priv;
  st->start_pos = priv->start_sector*CD_FRAMESIZE_RAW;
  st->end_pos = priv->end_sector*CD_FRAMESIZE_RAW;
  st->type = STREAMTYPE_CDDA;
  st->sector_size = CD_FRAMESIZE_RAW;

  st->fill_buffer = fill_buffer;
  st->seek = seek;
  st->close = close;

  *file_format = DEMUXER_TYPE_RAWAUDIO;

  m_struct_free(&stream_opts,opts);

  return STREAM_OK;
}

static void cdparanoia_callback(long inpos, int function) {
}

static int fill_buffer(stream_t* s, char* buffer, int max_len) {
  cdda_priv* p = (cdda_priv*)s->priv;
  cd_track_t *cd_track;
  int16_t * buf;
  int i;
  
  buf = paranoia_read(p->cdp,cdparanoia_callback);

  p->sector++;
  s->pos = p->sector*CD_FRAMESIZE_RAW;
  memcpy(buffer,buf,CD_FRAMESIZE_RAW);

  if((p->sector < p->start_sector) || (p->sector >= p->end_sector)) {
    s->eof = 1;
    return 0;
  }

  for(i=0;i<p->cd->tracks;i++){
	  if(p->cd->disc_toc[i].dwStartSector==p->sector-1) {
		  cd_track = cd_info_get_track(p->cd_info, i+1);
//printf("Track %d, sector=%d\n", i, p->sector-1);
		  if( cd_track!=NULL ) {
			  printf("\n%s\n", cd_track->name ); 
		  }
		  break;
	  }
  }

  
  return CD_FRAMESIZE_RAW;
}

static int seek(stream_t* s,off_t newpos) {
  cdda_priv* p = (cdda_priv*)s->priv;
  cd_track_t *cd_track;
  int sec;
  int current_track=0, seeked_track=0;
  int i;
  
  s->pos = newpos;
  if(s->pos < 0) {
    s->eof = 1;
    return 0;
  }

  sec = s->pos/CD_FRAMESIZE_RAW;
//printf("pos: %d, sec: %d ## %d\n", (int)s->pos, (int)sec, CD_FRAMESIZE_RAW);
//printf("sector: %d  new: %d\n", p->sector, sec );
 
  for(i=0;i<p->cd->tracks;i++){
//        printf("trk #%d: %d .. %d\n",i,p->cd->disc_toc[i].dwStartSector,p->cd->disc_toc[i+1].dwStartSector);
	if( p->sector>=p->cd->disc_toc[i].dwStartSector && p->sector<p->cd->disc_toc[i+1].dwStartSector ) {
		current_track = i;
	}
	if( sec>=p->cd->disc_toc[i].dwStartSector && sec<p->cd->disc_toc[i+1].dwStartSector ) {
		seeked_track = i;
	}
  }
//printf("current: %d, seeked: %d\n", current_track, seeked_track);
	if( current_track!=seeked_track ) {
//printf("Track %d, sector=%d\n", seeked_track, sec);
		  cd_track = cd_info_get_track(p->cd_info, seeked_track+1);
		  if( cd_track!=NULL ) {
			  printf("\n%s\n", cd_track->name ); 
		  }

	}
#if 0
  if(sec < p->start_sector)
    sec = p->start_sector;
  else if(sec > p->end_sector)
    sec = p->end_sector;
#endif

  p->sector = sec;
//  s->pos = sec*CD_FRAMESIZE_RAW;

//printf("seek: %d, sec: %d\n", (int)s->pos, sec);
  paranoia_seek(p->cdp,sec,SEEK_SET);
  return 1;
}

static void close(stream_t* s) {
  cdda_priv* p = (cdda_priv*)s->priv;
  paranoia_free(p->cdp);
  cdda_close(p->cd);
  cd_info_free(p->cd_info);
  free(p);
}

stream_info_t stream_info_cdda = {
  "CDDA",
  "cdda",
  "Albeu",
  "",
  open_cdda,
  { "cdda", "cddb", NULL },
  &stream_opts,
  1 // Urls are an option string
};

#endif