# definitions we don't want to make visible to the world
# because they're intended for use specifically by Imager.xs

# internal types used in Imager.xs
i_channel_list	 	T_IM_CHANNEL_LIST
i_sample_list		T_IM_SAMPLE_LIST
i_fsample_list		T_IM_FSAMPLE_LIST

off_t			T_OFF_T

Imager::Internal::Hlines T_PTROBJ

Imager::Context		 T_PTROBJ

#############################################################################
INPUT

T_OFF_T
  $var = i_sv_off_t(aTHX_ $arg);

T_IM_CHANNEL_LIST
        SvGETMAGIC($arg);
	if (SvOK($arg)) {
	  AV *channels_av;
	  int i;
	  if (!SvROK($arg) || SvTYPE(SvRV($arg)) != SVt_PVAV) {
	    croak(\"$var is not an array ref\");
	  }
	  channels_av = (AV *)SvRV($arg);
 	  $var.count = av_len(channels_av) + 1;
	  if ($var.count < 1) {
	    croak(\"$pname: no channels provided\");
	  }
	  $var.channels = malloc_temp(aTHX_ sizeof(int) * $var.count);
 	  for (i = 0; i < $var.count; ++i) {
	    SV **entry = av_fetch(channels_av, i, 0);
	    $var.channels[i] = entry ? SvIV(*entry) : 0;
	  }
        }
	else {
	  /* assumes we have an image */
	  $var.count = im->channels;
	  $var.channels = NULL;
	}

T_IM_SAMPLE_LIST
	SvGETMAGIC($arg);
	if (!SvOK($arg))
	  croak(\"$var must be a scalar or an arrayref\");
	if (SvROK($arg)) {
	  i_img_dim i;
	  AV *av;
	  i_sample_t *s;
	  if (SvTYPE(SvRV($arg)) != SVt_PVAV)
	    croak(\"$var must be a scalar or an arrayref\");
	  av = (AV *)SvRV($arg);
          $var.count = av_len(av) + 1;
          if ($var.count < 1)
	    croak(\"$pname: no samples provided in $var\");
	  s = malloc_temp(aTHX_ sizeof(i_sample_t) * $var.count);
 	  for (i = 0; i < $var.count; ++i) {
	    SV **entry = av_fetch(av, i, 0);
 	    s[i] = entry ? SvIV(*entry) : 0;
	  }
          $var.samples = s;
	}
	else {
	  /* non-magic would be preferable here */
	  $var.samples = (const i_sample_t *)SvPVbyte($arg, $var.count);
	  if ($var.count == 0)
	    croak(\"$pname: no samples provided in $var\");
	}

T_IM_FSAMPLE_LIST
	SvGETMAGIC($arg);
	if (!SvOK($arg))
	  croak(\"$var must be a scalar or an arrayref\");
	if (SvROK($arg)) {
	  i_img_dim i;
	  AV *av;
	  i_fsample_t *s;
	  if (SvTYPE(SvRV($arg)) != SVt_PVAV)
	    croak(\"$var must be a scalar or an arrayref\");
	  av = (AV *)SvRV($arg);
          $var.count = av_len(av) + 1;
          if ($var.count < 1)
	    croak(\"$pname: no samples provided in $var\");
	  s = malloc_temp(aTHX_ sizeof(i_fsample_t) * $var.count);
 	  for (i = 0; i < $var.count; ++i) {
	    SV **entry = av_fetch(av, i, 0);
 	    s[i] = entry ? SvNV(*entry) : 0;
	  }
          $var.samples = s;
	}
	else {
	  /* non-magic would be preferable here */
	  $var.samples = (const i_fsample_t *)SvPVbyte($arg, $var.count);
	  if ($var.count % sizeof(double))
	    croak(\"$pname: $var doesn't not contain a integer number of samples\");
          $var.count /= sizeof(double);
	  if ($var.count == 0)
	    croak(\"$pname: no samples provided in $var\");
	}

#############################################################################
OUTPUT

T_OFF_T
	$arg = i_new_sv_off_t(aTHX_ $var);