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Imager.xs
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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 "imperlio.h"
#include <float.h>
#if i_int_hlines_testing()
#include "imageri.h"
#endif
#include "imperl.h"
/*
Context object management
*/
typedef im_context_t Imager__Context;
#define im_context_DESTROY(ctx) im_context_refdec((ctx), "DESTROY")
#ifdef PERL_IMPLICIT_CONTEXT
#define MY_CXT_KEY "Imager::_context" XS_VERSION
typedef struct {
im_context_t ctx;
} my_cxt_t;
START_MY_CXT
im_context_t fallback_context;
static void
start_context(pTHX) {
dMY_CXT;
MY_CXT.ctx = im_context_new();
sv_setref_pv(get_sv("Imager::_context", GV_ADD), "Imager::Context", MY_CXT.ctx);
/* Ideally we'd free this reference, but the error message memory
was never released on exit, so the associated memory here is reasonable
to keep.
With logging enabled we always need at least one context, since
objects may be released fairly late and attempt to get the log file.
*/
im_context_refinc(MY_CXT.ctx, "start_context");
fallback_context = MY_CXT.ctx;
}
static im_context_t
perl_get_context(void) {
dTHX;
dMY_CXT;
return MY_CXT.ctx ? MY_CXT.ctx : fallback_context;
}
#else
static im_context_t perl_context;
static void
start_context(pTHX) {
perl_context = im_context_new();
im_context_refinc(perl_context, "start_context");
}
static im_context_t
perl_get_context(void) {
return perl_context;
}
#endif
/* 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);
}
static void *
calloc_temp(pTHX_ size_t size) {
void *result = malloc_temp(aTHX_ size);
memset(result, 0, size);
return result;
}
/* for use with the T_AVARRAY typemap */
#define doublePtr(size) ((double *)calloc_temp(aTHX_ sizeof(double) * (size)))
#define SvDouble(sv, pname) (SvNV(sv))
#define intPtr(size) ((int *)calloc_temp(aTHX_ sizeof(int) * (size)))
#define SvInt(sv, pname) (SvIV(sv))
#define i_img_dimPtr(size) ((i_img_dim *)calloc_temp(aTHX_ sizeof(i_img_dim) * (size)))
#define SvI_img_dim(sv, pname) (SvIV(sv))
#define i_colorPtr(size) ((i_color *)calloc_temp(aTHX_ sizeof(i_color *) * (size)))
#define SvI_color(sv, pname) S_sv_to_i_color(aTHX_ sv, pname)
static i_color
S_sv_to_i_color(pTHX_ SV *sv, const char *pname) {
if (!sv_derived_from(sv, "Imager::Color")) {
croak("%s: not a color object");
}
return *INT2PTR(i_color *, SvIV((SV *)SvRV(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));
#define IIM_new i_img_8_new
#define IIM_DESTROY i_img_destroy
typedef int SysRet;
#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(newSViv(cl->rgba.r)));
PUSHs(sv_2mortal(newSViv(cl->rgba.g)));
PUSHs(sv_2mortal(newSViv(cl->rgba.b)));
PUSHs(sv_2mortal(newSViv(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: