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/*
=head1 NAME
imgdouble.c - implements double per sample images
=head1 SYNOPSIS
i_img *im = i_img_double_new(int x, int y, int channels);
# use like a normal image
=head1 DESCRIPTION
Implements double/sample images.
This basic implementation is required so that we have some larger
sample image type to work with.
=over
=cut
*/
#include "imager.h"
#include "imageri.h"
static int i_ppix_ddoub(i_img *im, int x, int y, const i_color *val);
static int i_gpix_ddoub(i_img *im, int x, int y, i_color *val);
static int i_glin_ddoub(i_img *im, int l, int r, int y, i_color *vals);
static int i_plin_ddoub(i_img *im, int l, int r, int y, const i_color *vals);
static int i_ppixf_ddoub(i_img *im, int x, int y, const i_fcolor *val);
static int i_gpixf_ddoub(i_img *im, int x, int y, i_fcolor *val);
static int i_glinf_ddoub(i_img *im, int l, int r, int y, i_fcolor *vals);
static int i_plinf_ddoub(i_img *im, int l, int r, int y, const i_fcolor *vals);
static int i_gsamp_ddoub(i_img *im, int l, int r, int y, i_sample_t *samps,
int const *chans, int chan_count);
static int i_gsampf_ddoub(i_img *im, int l, int r, int y, i_fsample_t *samps,
int const *chans, int chan_count);
/*
=item IIM_base_16bit_direct
Base structure used to initialize a 16-bit/sample image.
Internal.
=cut
*/
static i_img IIM_base_double_direct =
{
0, /* channels set */
0, 0, 0, /* xsize, ysize, bytes */
~0U, /* ch_mask */
i_double_bits, /* bits */
i_direct_type, /* type */
0, /* virtual */
NULL, /* idata */
{ 0, 0, NULL }, /* tags */
NULL, /* ext_data */
i_ppix_ddoub, /* i_f_ppix */
i_ppixf_ddoub, /* i_f_ppixf */
i_plin_ddoub, /* i_f_plin */
i_plinf_ddoub, /* i_f_plinf */
i_gpix_ddoub, /* i_f_gpix */
i_gpixf_ddoub, /* i_f_gpixf */
i_glin_ddoub, /* i_f_glin */
i_glinf_ddoub, /* i_f_glinf */
i_gsamp_ddoub, /* i_f_gsamp */
i_gsampf_ddoub, /* i_f_gsampf */
NULL, /* i_f_gpal */
NULL, /* i_f_ppal */
NULL, /* i_f_addcolors */
NULL, /* i_f_getcolors */
NULL, /* i_f_colorcount */
NULL, /* i_f_maxcolors */
NULL, /* i_f_findcolor */
NULL, /* i_f_setcolors */
NULL, /* i_f_destroy */
i_gsamp_bits_fb,
NULL, /* i_f_psamp_bits */
};
/*
=item i_img_double_new(int x, int y, int ch)
=category Image creation/destruction
=synopsis i_img *img = i_img_double_new(width, height, channels);
Creates a new double per sample image.
=cut
*/
i_img *i_img_double_new(int x, int y, int ch) {
int bytes;
i_img *im;
mm_log((1,"i_img_double_new(x %d, y %d, ch %d)\n", x, y, ch));
if (x < 1 || y < 1) {
i_push_error(0, "Image sizes must be positive");
return NULL;
}
if (ch < 1 || ch > MAXCHANNELS) {
i_push_errorf(0, "channels must be between 1 and %d", MAXCHANNELS);
return NULL;
}
bytes = x * y * ch * sizeof(double);
if (bytes / y / ch / sizeof(double) != x) {
i_push_errorf(0, "integer overflow calculating image allocation");
return NULL;
}
im = i_img_alloc();
*im = IIM_base_double_direct;
i_tags_new(&im->tags);
im->xsize = x;
im->ysize = y;
im->channels = ch;
im->bytes = bytes;
im->ext_data = NULL;
im->idata = mymalloc(im->bytes);
memset(im->idata, 0, im->bytes);
i_img_init(im);
return im;
}
static int i_ppix_ddoub(i_img *im, int x, int y, const i_color *val) {
int off, ch;
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize)
return -1;
off = (x + y * im->xsize) * im->channels;
if (I_ALL_CHANNELS_WRITABLE(im)) {
for (ch = 0; ch < im->channels; ++ch)
((double*)im->idata)[off+ch] = Sample8ToF(val->channel[ch]);
}
else {
for (ch = 0; ch < im->channels; ++ch)
if (im->ch_mask & (1<<ch))
((double*)im->idata)[off+ch] = Sample8ToF(val->channel[ch]);
}
return 0;
}
static int i_gpix_ddoub(i_img *im, int x, int y, i_color *val) {
int off, ch;
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize)
return -1;
off = (x + y * im->xsize) * im->channels;
for (ch = 0; ch < im->channels; ++ch)
val->channel[ch] = SampleFTo8(((double *)im->idata)[off+ch]);
return 0;
}
static int i_ppixf_ddoub(i_img *im, int x, int y, const i_fcolor *val) {
int off, ch;
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize)
return -1;
off = (x + y * im->xsize) * im->channels;
if (I_ALL_CHANNELS_WRITABLE(im)) {
for (ch = 0; ch < im->channels; ++ch)
((double *)im->idata)[off+ch] = val->channel[ch];
}
else {
for (ch = 0; ch < im->channels; ++ch)
if (im->ch_mask & (1 << ch))
((double *)im->idata)[off+ch] = val->channel[ch];
}
return 0;
}
static int i_gpixf_ddoub(i_img *im, int x, int y, i_fcolor *val) {
int off, ch;
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize)
return -1;
off = (x + y * im->xsize) * im->channels;
for (ch = 0; ch < im->channels; ++ch)
val->channel[ch] = ((double *)im->idata)[off+ch];
return 0;
}
static int i_glin_ddoub(i_img *im, int l, int r, int y, i_color *vals) {
int ch, count, i;
int off;
if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
if (r > im->xsize)
r = im->xsize;
off = (l+y*im->xsize) * im->channels;
count = r - l;
for (i = 0; i < count; ++i) {
for (ch = 0; ch < im->channels; ++ch) {
vals[i].channel[ch] = SampleFTo8(((double *)im->idata)[off]);
++off;
}
}
return count;
}
else {
return 0;
}
}
static int i_plin_ddoub(i_img *im, int l, int r, int y, const i_color *vals) {
int ch, count, i;
int off;
if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
if (r > im->xsize)
r = im->xsize;
off = (l+y*im->xsize) * im->channels;
count = r - l;
if (I_ALL_CHANNELS_WRITABLE(im)) {
for (i = 0; i < count; ++i) {
for (ch = 0; ch < im->channels; ++ch) {
((double *)im->idata)[off] = Sample8ToF(vals[i].channel[ch]);
++off;
}
}
}
else {
for (i = 0; i < count; ++i) {
for (ch = 0; ch < im->channels; ++ch) {
if (im->ch_mask & (1 << ch))
((double *)im->idata)[off] = Sample8ToF(vals[i].channel[ch]);
++off;
}
}
}
return count;
}
else {
return 0;
}
}
static int i_glinf_ddoub(i_img *im, int l, int r, int y, i_fcolor *vals) {
int ch, count, i;
int off;
if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
if (r > im->xsize)
r = im->xsize;
off = (l+y*im->xsize) * im->channels;
count = r - l;
for (i = 0; i < count; ++i) {
for (ch = 0; ch < im->channels; ++ch) {
vals[i].channel[ch] = ((double *)im->idata)[off];
++off;
}
}
return count;
}
else {
return 0;
}
}
static int i_plinf_ddoub(i_img *im, int l, int r, int y, const i_fcolor *vals) {
int ch, count, i;
int off;
if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
if (r > im->xsize)
r = im->xsize;
off = (l+y*im->xsize) * im->channels;
count = r - l;
if (I_ALL_CHANNELS_WRITABLE(im)) {
for (i = 0; i < count; ++i) {
for (ch = 0; ch < im->channels; ++ch) {
((double *)im->idata)[off] = vals[i].channel[ch];
++off;
}
}
}
else {
for (i = 0; i < count; ++i) {
for (ch = 0; ch < im->channels; ++ch) {
if (im->ch_mask & (1 << ch))
((double *)im->idata)[off] = vals[i].channel[ch];
++off;
}
}
}
return count;
}
else {
return 0;
}
}
static int i_gsamp_ddoub(i_img *im, int l, int r, int y, i_sample_t *samps,
int const *chans, int chan_count) {
int ch, count, i, w;
int off;
if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
if (r > im->xsize)
r = im->xsize;
off = (l+y*im->xsize) * im->channels;
w = r - l;
count = 0;
if (chans) {
/* make sure we have good channel numbers */
for (ch = 0; ch < chan_count; ++ch) {
if (chans[ch] < 0 || chans[ch] >= im->channels) {
i_push_errorf(0, "No channel %d in this image", chans[ch]);
return 0;
}
}
for (i = 0; i < w; ++i) {
for (ch = 0; ch < chan_count; ++ch) {
*samps++ = SampleFTo8(((double *)im->idata)[off+chans[ch]]);
++count;
}
off += im->channels;
}
}
else {
if (chan_count <= 0 || chan_count > im->channels) {
i_push_errorf(0, "chan_count %d out of range, must be >0, <= channels",
chan_count);
return 0;
}
for (i = 0; i < w; ++i) {
for (ch = 0; ch < chan_count; ++ch) {
*samps++ = SampleFTo8(((double *)im->idata)[off+ch]);
++count;
}
off += im->channels;
}
}
return count;
}
else {
return 0;
}
}
static int i_gsampf_ddoub(i_img *im, int l, int r, int y, i_fsample_t *samps,
int const *chans, int chan_count) {
int ch, count, i, w;
int off;
if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
if (r > im->xsize)
r = im->xsize;
off = (l+y*im->xsize) * im->channels;
w = r - l;
count = 0;
if (chans) {
/* make sure we have good channel numbers */
for (ch = 0; ch < chan_count; ++ch) {
if (chans[ch] < 0 || chans[ch] >= im->channels) {
i_push_errorf(0, "No channel %d in this image", chans[ch]);
return 0;
}
}
for (i = 0; i < w; ++i) {
for (ch = 0; ch < chan_count; ++ch) {
*samps++ = ((double *)im->idata)[off+chans[ch]];
++count;
}
off += im->channels;
}
}
else {
if (chan_count <= 0 || chan_count > im->channels) {
i_push_errorf(0, "chan_count %d out of range, must be >0, <= channels",
chan_count);
return 0;
}
for (i = 0; i < w; ++i) {
for (ch = 0; ch < chan_count; ++ch) {
*samps++ = ((double *)im->idata)[off+ch];
++count;
}
off += im->channels;
}
}
return count;
}
else {
return 0;
}
}
/*
=back
=head1 AUTHOR
Tony Cook <tony@develop-help.com>
=head1 SEE ALSO
Imager(3)
=cut
*/
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