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#define PERL_NO_GET_CONTEXT
#ifdef __cplusplus
extern "C" {
#endif
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "imext.h"
#include "imperl.h"
#include "imgif.h"
#include "imextpl.h"
DEFINE_IMAGER_CALLBACKS;
DEFINE_IMAGER_PERL_CALLBACKS;
MODULE = Imager::File::GIF PACKAGE = Imager::File::GIF
double
i_giflib_version()
undef_int
i_writegif_wiol(ig, opts,...)
Imager::IO ig
PREINIT:
i_quantize quant;
i_img **imgs = NULL;
int img_count;
int i;
HV *hv;
CODE:
if (items < 3)
croak("Usage: i_writegif_wiol(IO,hashref, images...)");
if (!SvROK(ST(1)) || ! SvTYPE(SvRV(ST(1))))
croak("i_writegif_callback: Second argument must be a hash ref");
hv = (HV *)SvRV(ST(1));
memset(&quant, 0, sizeof(quant));
quant.version = 1;
quant.mc_size = 256;
quant.transp = tr_threshold;
quant.tr_threshold = 127;
ip_handle_quant_opts(aTHX_ &quant, hv);
img_count = items - 2;
RETVAL = 1;
if (img_count < 1) {
RETVAL = 0;
}
else {
imgs = mymalloc(sizeof(i_img *) * img_count);
for (i = 0; i < img_count; ++i) {
SV *sv = ST(2+i);
imgs[i] = NULL;
if (SvROK(sv) && sv_derived_from(sv, "Imager::ImgRaw")) {
imgs[i] = INT2PTR(i_img *, SvIV((SV*)SvRV(sv)));
}
else {
RETVAL = 0;
break;
}
}
if (RETVAL) {
RETVAL = i_writegif_wiol(ig, &quant, imgs, img_count);
}
myfree(imgs);
if (RETVAL) {
ip_copy_colors_back(aTHX_ hv, &quant);
}
}
ST(0) = sv_newmortal();
if (RETVAL == 0) ST(0)=&PL_sv_undef;
else sv_setiv(ST(0), (IV)RETVAL);
ip_cleanup_quant_opts(aTHX_ &quant);
void
i_readgif_wiol(ig)
Imager::IO ig
PREINIT:
int* colour_table;
int colours, q, w;
i_img* rimg;
SV* temp[3];
AV* ct;
SV* r;
PPCODE:
colour_table = NULL;
colours = 0;
if(GIMME_V == G_ARRAY) {
rimg = i_readgif_wiol(ig,&colour_table,&colours);
} else {
/* don't waste time with colours if they aren't wanted */
rimg = i_readgif_wiol(ig,NULL,NULL);
}
if (colour_table == NULL) {
EXTEND(SP,1);
r=sv_newmortal();
sv_setref_pv(r, "Imager::ImgRaw", (void*)rimg);
PUSHs(r);
} else {
/* the following creates an [[r,g,b], [r, g, b], [r, g, b]...] */
/* I don't know if I have the reference counts right or not :( */
/* Neither do I :-) */
/* No Idea here either */
ct=newAV();
av_extend(ct, colours);
for(q=0; q<colours; q++) {
for(w=0; w<3; w++)
temp[w]=sv_2mortal(newSViv(colour_table[q*3 + w]));
av_store(ct, q, (SV*)newRV_noinc((SV*)av_make(3, temp)));
}
myfree(colour_table);
EXTEND(SP,2);
r = sv_newmortal();
sv_setref_pv(r, "Imager::ImgRaw", (void*)rimg);
PUSHs(r);
PUSHs(newRV_noinc((SV*)ct));
}
Imager::ImgRaw
i_readgif_single_wiol(ig, page=0)
Imager::IO ig
int page
void
i_readgif_multi_wiol(ig)
Imager::IO ig
PREINIT:
i_img **imgs;
int count;
int i;
PPCODE:
imgs = i_readgif_multi_wiol(ig, &count);
if (imgs) {
EXTEND(SP, count);
for (i = 0; i < count; ++i) {
SV *sv = sv_newmortal();
sv_setref_pv(sv, "Imager::ImgRaw", (void *)imgs[i]);
PUSHs(sv);
}
myfree(imgs);
}
BOOT:
PERL_INITIALIZE_IMAGER_CALLBACKS;
PERL_INITIALIZE_IMAGER_PERL_CALLBACKS;
i_init_gif();
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