/
Imager.xs
4001 lines (3545 loc) · 93.2 KB
/
Imager.xs
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#define PERL_NO_GET_CONTEXT
#ifdef __cplusplus
extern "C" {
#endif
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#define NEED_newRV_noinc
#define NEED_sv_2pv_nolen
#define NEED_sv_2pvbyte
#include "ppport.h"
#ifdef __cplusplus
}
#endif
#define i_int_hlines_testing() 1
#include "imager.h"
#include "feat.h"
#include "dynaload.h"
#include "regmach.h"
#include "imextdef.h"
#include "imextpltypes.h"
#include <float.h>
#if i_int_hlines_testing()
#include "imageri.h"
#endif
#include "imperl.h"
/* used to represent channel lists parameters */
typedef struct i_channel_list_tag {
int *channels;
int count;
} i_channel_list;
typedef struct {
size_t count;
const i_sample_t *samples;
} i_sample_list;
typedef struct {
size_t count;
const i_fsample_t *samples;
} i_fsample_list;
/*
Allocate memory that will be discarded when mortals are discarded.
*/
static void *
malloc_temp(pTHX_ size_t size) {
SV *sv = sv_2mortal(newSV(size));
return SvPVX(sv);
}
/* These functions are all shared - then comes platform dependant code */
static int getstr(void *hv_t,char *key,char **store) {
dTHX;
SV** svpp;
HV* hv=(HV*)hv_t;
mm_log((1,"getstr(hv_t %p, key %s, store %p)\n",hv_t,key,store));
if ( !hv_exists(hv,key,strlen(key)) ) return 0;
svpp=hv_fetch(hv, key, strlen(key), 0);
*store=SvPV(*svpp, PL_na );
return 1;
}
static int getint(void *hv_t,char *key,int *store) {
dTHX;
SV** svpp;
HV* hv=(HV*)hv_t;
mm_log((1,"getint(hv_t %p, key %s, store %p)\n",hv_t,key,store));
if ( !hv_exists(hv,key,strlen(key)) ) return 0;
svpp=hv_fetch(hv, key, strlen(key), 0);
*store=(int)SvIV(*svpp);
return 1;
}
static int getdouble(void *hv_t,char* key,double *store) {
dTHX;
SV** svpp;
HV* hv=(HV*)hv_t;
mm_log((1,"getdouble(hv_t %p, key %s, store %p)\n",hv_t,key,store));
if ( !hv_exists(hv,key,strlen(key)) ) return 0;
svpp=hv_fetch(hv, key, strlen(key), 0);
*store=(double)SvNV(*svpp);
return 1;
}
static int getvoid(void *hv_t,char* key,void **store) {
dTHX;
SV** svpp;
HV* hv=(HV*)hv_t;
mm_log((1,"getvoid(hv_t %p, key %s, store %p)\n",hv_t,key,store));
if ( !hv_exists(hv,key,strlen(key)) ) return 0;
svpp=hv_fetch(hv, key, strlen(key), 0);
*store = INT2PTR(void*, SvIV(*svpp));
return 1;
}
static int getobj(void *hv_t,char *key,char *type,void **store) {
dTHX;
SV** svpp;
HV* hv=(HV*)hv_t;
mm_log((1,"getobj(hv_t %p, key %s,type %s, store %p)\n",hv_t,key,type,store));
if ( !hv_exists(hv,key,strlen(key)) ) return 0;
svpp=hv_fetch(hv, key, strlen(key), 0);
if (sv_derived_from(*svpp,type)) {
IV tmp = SvIV((SV*)SvRV(*svpp));
*store = INT2PTR(void*, tmp);
} else {
mm_log((1,"getobj: key exists in hash but is not of correct type"));
return 0;
}
return 1;
}
UTIL_table_t i_UTIL_table={getstr,getint,getdouble,getvoid,getobj};
void my_SvREFCNT_dec(void *p) {
dTHX;
SvREFCNT_dec((SV*)p);
}
static void
i_log_entry(char *string, int level) {
mm_log((level, "%s", string));
}
static SV *
make_i_color_sv(pTHX_ const i_color *c) {
SV *sv;
i_color *col = mymalloc(sizeof(i_color));
*col = *c;
sv = sv_newmortal();
sv_setref_pv(sv, "Imager::Color", (void *)col);
return sv;
}
#define CBDATA_BUFSIZE 8192
struct cbdata {
/* the SVs we use to call back to Perl */
SV *writecb;
SV *readcb;
SV *seekcb;
SV *closecb;
};
static ssize_t
call_reader(struct cbdata *cbd, void *buf, size_t size,
size_t maxread) {
dTHX;
int count;
int result;
SV *data;
dSP;
if (!SvOK(cbd->readcb)) {
mm_log((1, "read callback called but no readcb supplied\n"));
i_push_error(0, "read callback called but no readcb supplied");
return -1;
}
ENTER;
SAVETMPS;
EXTEND(SP, 2);
PUSHMARK(SP);
PUSHs(sv_2mortal(newSViv(size)));
PUSHs(sv_2mortal(newSViv(maxread)));
PUTBACK;
count = perl_call_sv(cbd->readcb, G_SCALAR);
SPAGAIN;
if (count != 1)
croak("Result of perl_call_sv(..., G_SCALAR) != 1");
data = POPs;
if (SvOK(data)) {
STRLEN len;
char *ptr = SvPVbyte(data, len);
if (len > maxread)
croak("Too much data returned in reader callback (wanted %d, got %d, expected %d)",
(int)size, (int)len, (int)maxread);
memcpy(buf, ptr, len);
result = len;
}
else {
result = -1;
}
PUTBACK;
FREETMPS;
LEAVE;
return result;
}
static off_t
io_seeker(void *p, off_t offset, int whence) {
dTHX;
struct cbdata *cbd = p;
int count;
off_t result;
dSP;
if (!SvOK(cbd->seekcb)) {
mm_log((1, "seek callback called but no seekcb supplied\n"));
i_push_error(0, "seek callback called but no seekcb supplied");
return -1;
}
ENTER;
SAVETMPS;
EXTEND(SP, 2);
PUSHMARK(SP);
PUSHs(sv_2mortal(newSViv(offset)));
PUSHs(sv_2mortal(newSViv(whence)));
PUTBACK;
count = perl_call_sv(cbd->seekcb, G_SCALAR);
SPAGAIN;
if (count != 1)
croak("Result of perl_call_sv(..., G_SCALAR) != 1");
result = POPi;
PUTBACK;
FREETMPS;
LEAVE;
return result;
}
static ssize_t
io_writer(void *p, void const *data, size_t size) {
dTHX;
struct cbdata *cbd = p;
I32 count;
SV *sv;
dSP;
bool success;
if (!SvOK(cbd->writecb)) {
mm_log((1, "write callback called but no writecb supplied\n"));
i_push_error(0, "write callback called but no writecb supplied");
return -1;
}
ENTER;
SAVETMPS;
EXTEND(SP, 1);
PUSHMARK(SP);
PUSHs(sv_2mortal(newSVpv((char *)data, size)));
PUTBACK;
count = perl_call_sv(cbd->writecb, G_SCALAR);
SPAGAIN;
if (count != 1)
croak("Result of perl_call_sv(..., G_SCALAR) != 1");
sv = POPs;
success = SvTRUE(sv);
PUTBACK;
FREETMPS;
LEAVE;
return success ? size : -1;
}
static ssize_t
io_reader(void *p, void *data, size_t size) {
struct cbdata *cbd = p;
return call_reader(cbd, data, size, size);
}
static int io_closer(void *p) {
dTHX;
struct cbdata *cbd = p;
int success = 1;
if (SvOK(cbd->closecb)) {
dSP;
I32 count;
SV *sv;
ENTER;
SAVETMPS;
PUSHMARK(SP);
PUTBACK;
count = perl_call_sv(cbd->closecb, G_SCALAR);
SPAGAIN;
sv = POPs;
success = SvTRUE(sv);
PUTBACK;
FREETMPS;
LEAVE;
}
return success ? 0 : -1;
}
static void io_destroyer(void *p) {
dTHX;
struct cbdata *cbd = p;
SvREFCNT_dec(cbd->writecb);
SvREFCNT_dec(cbd->readcb);
SvREFCNT_dec(cbd->seekcb);
SvREFCNT_dec(cbd->closecb);
myfree(cbd);
}
static i_io_glue_t *
do_io_new_buffer(pTHX_ SV *data_sv) {
const char *data;
STRLEN length;
data = SvPVbyte(data_sv, length);
SvREFCNT_inc(data_sv);
return io_new_buffer(data, length, my_SvREFCNT_dec, data_sv);
}
static const char *
describe_sv(SV *sv) {
if (SvOK(sv)) {
if (SvROK(sv)) {
svtype type = SvTYPE(SvRV(sv));
switch (type) {
case SVt_PVCV: return "CV";
case SVt_PVGV: return "GV";
case SVt_PVLV: return "LV";
default: return "some reference";
}
}
else {
return "non-reference scalar";
}
}
else {
return "undef";
}
}
static i_io_glue_t *
do_io_new_cb(pTHX_ SV *writecb, SV *readcb, SV *seekcb, SV *closecb) {
struct cbdata *cbd;
cbd = mymalloc(sizeof(struct cbdata));
cbd->writecb = newSVsv(writecb);
cbd->readcb = newSVsv(readcb);
cbd->seekcb = newSVsv(seekcb);
cbd->closecb = newSVsv(closecb);
mm_log((1, "do_io_new_cb(writecb %p (%s), readcb %p (%s), seekcb %p (%s), closecb %p (%s))\n", writecb, describe_sv(writecb), readcb, describe_sv(readcb), seekcb, describe_sv(seekcb), closecb, describe_sv(closecb)));
return io_new_cb(cbd, io_reader, io_writer, io_seeker, io_closer,
io_destroyer);
}
struct value_name {
char *name;
int value;
};
static int lookup_name(struct value_name *names, int count, char *name, int def_value)
{
int i;
for (i = 0; i < count; ++i)
if (strEQ(names[i].name, name))
return names[i].value;
return def_value;
}
static struct value_name transp_names[] =
{
{ "none", tr_none },
{ "threshold", tr_threshold },
{ "errdiff", tr_errdiff },
{ "ordered", tr_ordered, },
};
static struct value_name make_color_names[] =
{
{ "none", mc_none, },
{ "webmap", mc_web_map, },
{ "addi", mc_addi, },
{ "mediancut", mc_median_cut, },
{ "mono", mc_mono, },
{ "monochrome", mc_mono, },
{ "gray", mc_gray, },
{ "gray4", mc_gray4, },
{ "gray16", mc_gray16, },
};
static struct value_name translate_names[] =
{
{ "giflib", pt_giflib, },
{ "closest", pt_closest, },
{ "perturb", pt_perturb, },
{ "errdiff", pt_errdiff, },
};
static struct value_name errdiff_names[] =
{
{ "floyd", ed_floyd, },
{ "jarvis", ed_jarvis, },
{ "stucki", ed_stucki, },
{ "custom", ed_custom, },
};
static struct value_name orddith_names[] =
{
{ "random", od_random, },
{ "dot8", od_dot8, },
{ "dot4", od_dot4, },
{ "hline", od_hline, },
{ "vline", od_vline, },
{ "/line", od_slashline, },
{ "slashline", od_slashline, },
{ "\\line", od_backline, },
{ "backline", od_backline, },
{ "tiny", od_tiny, },
{ "custom", od_custom, },
};
/* look through the hash for quantization options */
static void
ip_handle_quant_opts(pTHX_ i_quantize *quant, HV *hv)
{
/*** POSSIBLY BROKEN: do I need to unref the SV from hv_fetch ***/
SV **sv;
int i;
STRLEN len;
char *str;
quant->mc_colors = mymalloc(quant->mc_size * sizeof(i_color));
sv = hv_fetch(hv, "transp", 6, 0);
if (sv && *sv && (str = SvPV(*sv, len))) {
quant->transp =
lookup_name(transp_names, sizeof(transp_names)/sizeof(*transp_names),
str, tr_none);
if (quant->transp != tr_none) {
quant->tr_threshold = 127;
sv = hv_fetch(hv, "tr_threshold", 12, 0);
if (sv && *sv)
quant->tr_threshold = SvIV(*sv);
}
if (quant->transp == tr_errdiff) {
sv = hv_fetch(hv, "tr_errdiff", 10, 0);
if (sv && *sv && (str = SvPV(*sv, len)))
quant->tr_errdiff = lookup_name(errdiff_names, sizeof(errdiff_names)/sizeof(*errdiff_names), str, ed_floyd);
}
if (quant->transp == tr_ordered) {
quant->tr_orddith = od_tiny;
sv = hv_fetch(hv, "tr_orddith", 10, 0);
if (sv && *sv && (str = SvPV(*sv, len)))
quant->tr_orddith = lookup_name(orddith_names, sizeof(orddith_names)/sizeof(*orddith_names), str, od_random);
if (quant->tr_orddith == od_custom) {
sv = hv_fetch(hv, "tr_map", 6, 0);
if (sv && *sv && SvTYPE(SvRV(*sv)) == SVt_PVAV) {
AV *av = (AV*)SvRV(*sv);
len = av_len(av) + 1;
if (len > sizeof(quant->tr_custom))
len = sizeof(quant->tr_custom);
for (i = 0; i < len; ++i) {
SV **sv2 = av_fetch(av, i, 0);
if (sv2 && *sv2) {
quant->tr_custom[i] = SvIV(*sv2);
}
}
while (i < sizeof(quant->tr_custom))
quant->tr_custom[i++] = 0;
}
}
}
}
quant->make_colors = mc_median_cut;
sv = hv_fetch(hv, "make_colors", 11, 0);
if (sv && *sv && (str = SvPV(*sv, len))) {
quant->make_colors =
lookup_name(make_color_names, sizeof(make_color_names)/sizeof(*make_color_names), str, mc_median_cut);
}
sv = hv_fetch(hv, "colors", 6, 0);
if (sv && *sv && SvROK(*sv) && SvTYPE(SvRV(*sv)) == SVt_PVAV) {
/* needs to be an array of Imager::Color
note that the caller allocates the mc_color array and sets mc_size
to it's size */
AV *av = (AV *)SvRV(*sv);
quant->mc_count = av_len(av)+1;
if (quant->mc_count > quant->mc_size)
quant->mc_count = quant->mc_size;
for (i = 0; i < quant->mc_count; ++i) {
SV **sv1 = av_fetch(av, i, 0);
if (sv1 && *sv1 && SvROK(*sv1) && sv_derived_from(*sv1, "Imager::Color")) {
i_color *col = INT2PTR(i_color *, SvIV((SV*)SvRV(*sv1)));
quant->mc_colors[i] = *col;
}
}
}
sv = hv_fetch(hv, "max_colors", 10, 0);
if (sv && *sv) {
i = SvIV(*sv);
if (i <= quant->mc_size && i >= quant->mc_count)
quant->mc_size = i;
}
quant->translate = pt_closest;
sv = hv_fetch(hv, "translate", 9, 0);
if (sv && *sv && (str = SvPV(*sv, len))) {
quant->translate = lookup_name(translate_names, sizeof(translate_names)/sizeof(*translate_names), str, pt_closest);
}
sv = hv_fetch(hv, "errdiff", 7, 0);
if (sv && *sv && (str = SvPV(*sv, len))) {
quant->errdiff = lookup_name(errdiff_names, sizeof(errdiff_names)/sizeof(*errdiff_names), str, ed_floyd);
}
if (quant->translate == pt_errdiff && quant->errdiff == ed_custom) {
/* get the error diffusion map */
sv = hv_fetch(hv, "errdiff_width", 13, 0);
if (sv && *sv)
quant->ed_width = SvIV(*sv);
sv = hv_fetch(hv, "errdiff_height", 14, 0);
if (sv && *sv)
quant->ed_height = SvIV(*sv);
sv = hv_fetch(hv, "errdiff_orig", 12, 0);
if (sv && *sv)
quant->ed_orig = SvIV(*sv);
if (quant->ed_width > 0 && quant->ed_height > 0) {
int sum = 0;
quant->ed_map = mymalloc(sizeof(int)*quant->ed_width*quant->ed_height);
sv = hv_fetch(hv, "errdiff_map", 11, 0);
if (sv && *sv && SvROK(*sv) && SvTYPE(SvRV(*sv)) == SVt_PVAV) {
AV *av = (AV*)SvRV(*sv);
len = av_len(av) + 1;
if (len > quant->ed_width * quant->ed_height)
len = quant->ed_width * quant->ed_height;
for (i = 0; i < len; ++i) {
SV **sv2 = av_fetch(av, i, 0);
if (sv2 && *sv2) {
quant->ed_map[i] = SvIV(*sv2);
sum += quant->ed_map[i];
}
}
}
if (!sum) {
/* broken map */
myfree(quant->ed_map);
quant->ed_map = 0;
quant->errdiff = ed_floyd;
}
}
}
sv = hv_fetch(hv, "perturb", 7, 0);
if (sv && *sv)
quant->perturb = SvIV(*sv);
}
static void
ip_cleanup_quant_opts(pTHX_ i_quantize *quant) {
myfree(quant->mc_colors);
if (quant->ed_map)
myfree(quant->ed_map);
}
/* copies the color map from the hv into the colors member of the HV */
static void
ip_copy_colors_back(pTHX_ HV *hv, i_quantize *quant) {
SV **sv;
AV *av;
int i;
SV *work;
sv = hv_fetch(hv, "colors", 6, 0);
if (!sv || !*sv || !SvROK(*sv) || SvTYPE(SvRV(*sv)) != SVt_PVAV) {
/* nothing to do */
return;
}
av = (AV *)SvRV(*sv);
av_clear(av);
av_extend(av, quant->mc_count+1);
for (i = 0; i < quant->mc_count; ++i) {
i_color *in = quant->mc_colors+i;
Imager__Color c = ICL_new_internal(in->rgb.r, in->rgb.g, in->rgb.b, 255);
work = sv_newmortal();
sv_setref_pv(work, "Imager::Color", (void *)c);
SvREFCNT_inc(work);
av_push(av, work);
}
}
/* loads the segments of a fountain fill into an array */
static i_fountain_seg *
load_fount_segs(pTHX_ AV *asegs, int *count) {
/* Each element of segs must contain:
[ start, middle, end, c0, c1, segtype, colortrans ]
start, middle, end are doubles from 0 to 1
c0, c1 are Imager::Color::Float or Imager::Color objects
segtype, colortrans are ints
*/
int i, j;
AV *aseg;
i_fountain_seg *segs;
double work[3];
int worki[2];
*count = av_len(asegs)+1;
if (*count < 1)
croak("i_fountain must have at least one segment");
segs = mymalloc(sizeof(i_fountain_seg) * *count);
for(i = 0; i < *count; i++) {
SV **sv1 = av_fetch(asegs, i, 0);
if (!sv1 || !*sv1 || !SvROK(*sv1)
|| SvTYPE(SvRV(*sv1)) != SVt_PVAV) {
myfree(segs);
croak("i_fountain: segs must be an arrayref of arrayrefs");
}
aseg = (AV *)SvRV(*sv1);
if (av_len(aseg) != 7-1) {
myfree(segs);
croak("i_fountain: a segment must have 7 members");
}
for (j = 0; j < 3; ++j) {
SV **sv2 = av_fetch(aseg, j, 0);
if (!sv2 || !*sv2) {
myfree(segs);
croak("i_fountain: XS error");
}
work[j] = SvNV(*sv2);
}
segs[i].start = work[0];
segs[i].middle = work[1];
segs[i].end = work[2];
for (j = 0; j < 2; ++j) {
SV **sv3 = av_fetch(aseg, 3+j, 0);
if (!sv3 || !*sv3 || !SvROK(*sv3) ||
(!sv_derived_from(*sv3, "Imager::Color")
&& !sv_derived_from(*sv3, "Imager::Color::Float"))) {
myfree(segs);
croak("i_fountain: segs must contain colors in elements 3 and 4");
}
if (sv_derived_from(*sv3, "Imager::Color::Float")) {
segs[i].c[j] = *INT2PTR(i_fcolor *, SvIV((SV *)SvRV(*sv3)));
}
else {
i_color c = *INT2PTR(i_color *, SvIV((SV *)SvRV(*sv3)));
int ch;
for (ch = 0; ch < MAXCHANNELS; ++ch) {
segs[i].c[j].channel[ch] = c.channel[ch] / 255.0;
}
}
}
for (j = 0; j < 2; ++j) {
SV **sv2 = av_fetch(aseg, j+5, 0);
if (!sv2 || !*sv2) {
myfree(segs);
croak("i_fountain: XS error");
}
worki[j] = SvIV(*sv2);
}
segs[i].type = worki[0];
segs[i].color = worki[1];
}
return segs;
}
/* validates the indexes supplied to i_ppal
i_ppal() doesn't do that for speed, but I'm not comfortable doing that
for calls from perl.
*/
static void
validate_i_ppal(i_img *im, i_palidx const *indexes, int count) {
int color_count = i_colorcount(im);
int i;
if (color_count == -1)
croak("i_plin() called on direct color image");
for (i = 0; i < count; ++i) {
if (indexes[i] >= color_count) {
croak("i_plin() called with out of range color index %d (max %d)",
indexes[i], color_count-1);
}
}
}
/* I don't think ICLF_* names belong at the C interface
this makes the XS code think we have them, to let us avoid
putting function bodies in the XS code
*/
#define ICLF_new_internal(r, g, b, a) i_fcolor_new((r), (g), (b), (a))
#define ICLF_DESTROY(cl) i_fcolor_destroy(cl)
#ifdef IMAGER_LOG
#define i_log_enabled() 1
#else
#define i_log_enabled() 0
#endif
#if i_int_hlines_testing()
typedef i_int_hlines *Imager__Internal__Hlines;
static i_int_hlines *
i_int_hlines_new(i_img_dim start_y, i_img_dim count_y, i_img_dim start_x, i_img_dim count_x) {
i_int_hlines *result = mymalloc(sizeof(i_int_hlines));
i_int_init_hlines(result, start_y, count_y, start_x, count_x);
return result;
}
static i_int_hlines *
i_int_hlines_new_img(i_img *im) {
i_int_hlines *result = mymalloc(sizeof(i_int_hlines));
i_int_init_hlines_img(result, im);
return result;
}
static void
i_int_hlines_DESTROY(i_int_hlines *hlines) {
i_int_hlines_destroy(hlines);
myfree(hlines);
}
#define i_int_hlines_CLONE_SKIP(cls) 1
static int seg_compare(const void *vleft, const void *vright) {
const i_int_hline_seg *left = vleft;
const i_int_hline_seg *right = vright;
return left->minx - right->minx;
}
static SV *
i_int_hlines_dump(i_int_hlines *hlines) {
dTHX;
SV *dump = newSVpvf("start_y: %" i_DF " limit_y: %" i_DF " start_x: %" i_DF " limit_x: %" i_DF"\n",
i_DFc(hlines->start_y), i_DFc(hlines->limit_y), i_DFc(hlines->start_x), i_DFc(hlines->limit_x));
i_img_dim y;
for (y = hlines->start_y; y < hlines->limit_y; ++y) {
i_int_hline_entry *entry = hlines->entries[y-hlines->start_y];
if (entry) {
int i;
/* sort the segments, if any */
if (entry->count)
qsort(entry->segs, entry->count, sizeof(i_int_hline_seg), seg_compare);
sv_catpvf(dump, " %" i_DF " (%" i_DF "):", i_DFc(y), i_DFc(entry->count));
for (i = 0; i < entry->count; ++i) {
sv_catpvf(dump, " [%" i_DF ", %" i_DF ")", i_DFc(entry->segs[i].minx),
i_DFc(entry->segs[i].x_limit));
}
sv_catpv(dump, "\n");
}
}
return dump;
}
#endif
static off_t
i_sv_off_t(pTHX_ SV *sv) {
#if LSEEKSIZE > IVSIZE
return (off_t)SvNV(sv);
#else
return (off_t)SvIV(sv);
#endif
}
static SV *
i_new_sv_off_t(pTHX_ off_t off) {
#if LSEEKSIZE > IVSIZE
return newSVnv(off);
#else
return newSViv(off);
#endif
}
static im_pl_ext_funcs im_perl_funcs =
{
IMAGER_PL_API_VERSION,
IMAGER_PL_API_LEVEL,
ip_handle_quant_opts,
ip_cleanup_quant_opts,
ip_copy_colors_back
};
#define PERL_PL_SET_GLOBAL_CALLBACKS \
sv_setiv(get_sv(PERL_PL_FUNCTION_TABLE_NAME, 1), PTR2IV(&im_perl_funcs));
#ifdef IMEXIF_ENABLE
#define i_exif_enabled() 1
#else
#define i_exif_enabled() 0
#endif
/* trying to use more C style names, map them here */
#define i_io_DESTROY(ig) io_glue_destroy(ig)
#define i_img_get_width(im) ((im)->xsize)
#define i_img_get_height(im) ((im)->ysize)
#define i_img_epsilonf() (DBL_EPSILON * 4)
/* avoid some xsubpp strangeness */
#define NEWLINE '\n'
MODULE = Imager PACKAGE = Imager::Color PREFIX = ICL_
Imager::Color
ICL_new_internal(r,g,b,a)
unsigned char r
unsigned char g
unsigned char b
unsigned char a
void
ICL_DESTROY(cl)
Imager::Color cl
void
ICL_set_internal(cl,r,g,b,a)
Imager::Color cl
unsigned char r
unsigned char g
unsigned char b
unsigned char a
PPCODE:
ICL_set_internal(cl, r, g, b, a);
EXTEND(SP, 1);
PUSHs(ST(0));
void
ICL_info(cl)
Imager::Color cl
void
ICL_rgba(cl)
Imager::Color cl
PPCODE:
EXTEND(SP, 4);
PUSHs(sv_2mortal(newSVnv(cl->rgba.r)));
PUSHs(sv_2mortal(newSVnv(cl->rgba.g)));
PUSHs(sv_2mortal(newSVnv(cl->rgba.b)));
PUSHs(sv_2mortal(newSVnv(cl->rgba.a)));
Imager::Color
i_hsv_to_rgb(c)
Imager::Color c
CODE:
RETVAL = mymalloc(sizeof(i_color));
*RETVAL = *c;
i_hsv_to_rgb(RETVAL);
OUTPUT:
RETVAL
Imager::Color
i_rgb_to_hsv(c)
Imager::Color c
CODE:
RETVAL = mymalloc(sizeof(i_color));
*RETVAL = *c;
i_rgb_to_hsv(RETVAL);
OUTPUT:
RETVAL
MODULE = Imager PACKAGE = Imager::Color::Float PREFIX=ICLF_
Imager::Color::Float
ICLF_new_internal(r, g, b, a)
double r
double g
double b
double a
void
ICLF_DESTROY(cl)
Imager::Color::Float cl
void
ICLF_rgba(cl)
Imager::Color::Float cl
PREINIT:
int ch;
PPCODE:
EXTEND(SP, MAXCHANNELS);
for (ch = 0; ch < MAXCHANNELS; ++ch) {
/* printf("%d: %g\n", ch, cl->channel[ch]); */
PUSHs(sv_2mortal(newSVnv(cl->channel[ch])));
}
void
ICLF_set_internal(cl,r,g,b,a)
Imager::Color::Float cl
double r
double g
double b
double a
PPCODE:
cl->rgba.r = r;
cl->rgba.g = g;
cl->rgba.b = b;
cl->rgba.a = a;
EXTEND(SP, 1);
PUSHs(ST(0));
Imager::Color::Float
i_hsv_to_rgb(c)
Imager::Color::Float c
CODE:
RETVAL = mymalloc(sizeof(i_fcolor));
*RETVAL = *c;
i_hsv_to_rgbf(RETVAL);
OUTPUT:
RETVAL
Imager::Color::Float
i_rgb_to_hsv(c)
Imager::Color::Float c
CODE:
RETVAL = mymalloc(sizeof(i_fcolor));
*RETVAL = *c;
i_rgb_to_hsvf(RETVAL);
OUTPUT:
RETVAL
MODULE = Imager PACKAGE = Imager::ImgRaw PREFIX = IIM_
Imager::ImgRaw
IIM_new(x,y,ch)
i_img_dim x
i_img_dim y
int ch
void
IIM_DESTROY(im)
Imager::ImgRaw im
MODULE = Imager PACKAGE = Imager
PROTOTYPES: ENABLE
Imager::IO
io_new_fd(fd)
int fd