# 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

i_palidx		T_IV
double *		T_AVARRAY
int *  			T_AVARRAY
i_img_dim *		T_AVARRAY
i_color *		T_AVARRAY


#############################################################################
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\");
	}

T_AVARRAY
	STMT_START {
		SV* const xsub_tmp_sv = $arg;
		SvGETMAGIC(xsub_tmp_sv);
		if (SvROK(xsub_tmp_sv) && SvTYPE(SvRV(xsub_tmp_sv)) == SVt_PVAV){
		    AV *xsub_tmp_av = (AV*)SvRV(xsub_tmp_sv);
		    STRLEN xsub_index;
		    size_$var = av_len(xsub_tmp_av) + 1;
		    $var = $ntype(size_$var);
		    for (xsub_index = 0; xsub_index < size_$var; ++xsub_index) {
		        SV **sv = av_fetch(xsub_tmp_av, xsub_index, 0);
			if (sv) {
			  ${var}[xsub_index] = Sv${(my $ntt = $ntype) =~ s/Ptr$//; \(ucfirst $ntt)}(*sv, \"$pname\");
                        }
		    }
		}
		else{
		    Perl_croak(aTHX_ \"%s: %s is not an ARRAY reference\",
				${$ALIAS?\q[GvNAME(CvGV(cv))]:\qq[\"$pname\"]},
				\"$var\");
		}
	} STMT_END

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

T_OFF_T
	$arg = i_new_sv_off_t(aTHX_ $var);