=cut
*/
+#define IMAGER_NO_CONTEXT
+
#include "imager.h"
#include "imageri.h"
static int i_setcolors_p(i_img *im, int index, const i_color *color, int count);
static void i_destroy_p(i_img *im);
+static i_img_dim
+i_psamp_p(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y, const i_sample_t *samps, const int *chans, int chan_count);
+static i_img_dim
+i_psampf_p(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y, const i_fsample_t *samps, const int *chans, int chan_count);
static i_img IIM_base_8bit_pal =
{
i_gsamp_bits_fb,
NULL, /* i_f_psamp_bits */
+
+ i_psamp_p,
+ i_psampf_p
};
/*
-=item i_img_pal_new(C<x>, C<y>, C<channels>, C<maxpal>)
-
+=item im_img_pal_new(ctx, C<x>, C<y>, C<channels>, C<maxpal>)
+X<im_img_pal_new API>X<i_img_pal_new API>
=category Image creation/destruction
+=synopsis i_img *img = im_img_pal_new(aIMCTX, width, height, channels, max_palette_size)
=synopsis i_img *img = i_img_pal_new(width, height, channels, max_palette_size)
Creates a new paletted image of the supplied dimensions.
Returns a new image or NULL on failure.
+Also callable as C<i_img_pal_new(width, height, channels, max_palette_size)>.
+
=cut
*/
i_img *
-i_img_pal_new(i_img_dim x, i_img_dim y, int channels, int maxpal) {
+im_img_pal_new(pIMCTX, i_img_dim x, i_img_dim y, int channels, int maxpal) {
i_img *im;
i_img_pal_ext *palext;
size_t bytes, line_bytes;
return NULL;
}
if (channels < 1 || channels > MAXCHANNELS) {
- i_push_errorf(0, "Channels must be positive and <= %d", MAXCHANNELS);
+ im_push_errorf(aIMCTX, 0, "Channels must be positive and <= %d", MAXCHANNELS);
return NULL;
}
bytes = sizeof(i_palidx) * x * y;
=cut
*/
-int i_img_to_rgb_inplace(i_img *im) {
+int
+i_img_to_rgb_inplace(i_img *im) {
i_img temp;
+ dIMCTXim(im);
if (im->virtual)
return 0;
i_img *i_img_to_pal(i_img *src, i_quantize *quant) {
i_palidx *result;
i_img *im;
+ dIMCTXim(src);
i_clear_error();
=cut
*/
-i_img *i_img_to_rgb(i_img *src) {
+i_img *
+i_img_to_rgb(i_img *src) {
+ dIMCTXim(src);
i_img *im = i_img_empty_ch(NULL, src->xsize, src->ysize, src->channels);
i_img_rgb_convert(im, src);
*/
static int
i_ppix_p(i_img *im, i_img_dim x, i_img_dim y, const i_color *val) {
+ const i_color *work_val = val;
+ i_color workc;
i_palidx which;
+ const unsigned all_mask = ( 1 << im->channels ) - 1;
+
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize)
return -1;
- if (i_findcolor(im, val, &which)) {
+
+ if ((im->ch_mask & all_mask) != all_mask) {
+ unsigned mask = 1;
+ int ch;
+ i_gpix(im, x, y, &workc);
+ for (ch = 0; ch < im->channels; ++ch) {
+ if (im->ch_mask & mask)
+ workc.channel[ch] = val->channel[ch];
+ mask <<= 1;
+ }
+ work_val = &workc;
+ }
+
+ if (i_findcolor(im, work_val, &which)) {
((i_palidx *)im->idata)[x + y * im->xsize] = which;
return 0;
}
else {
+ dIMCTXim(im);
+ im_log((aIMCTX, 1, "i_ppix: color(%d,%d,%d) not found, converting to rgb\n",
+ val->channel[0], val->channel[1], val->channel[2]));
if (i_img_to_rgb_inplace(im)) {
return i_ppix(im, x, y, val);
}
if (chans) {
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]);
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "No channel %d in this image", chans[ch]);
}
}
}
else {
if (chan_count <= 0 || chan_count > im->channels) {
- i_push_errorf(0, "chan_count %d out of range, must be >0, <= channels",
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "chan_count %d out of range, must be >0, <= channels",
chan_count);
return 0;
}
return 0;
}
+/*
+=item i_psamp_p(im, l, r, y, samps, chans, chan_count)
+
+Implement psamp() for paletted images.
+
+Since writing samples doesn't really work as a concept for paletted
+images, this is slow.
+
+Also, writing samples may convert the image to a direct image in the
+process, so use i_ppix/i_gpix instead of directly calling the paletted
+handlers.
+
+=cut
+*/
+
+static i_img_dim
+i_psamp_p(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y,
+ const i_sample_t *samps, const int *chans, int chan_count) {
+ if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
+ i_img_dim count = 0;
+ int ch;
+
+ if (r > im->xsize)
+ r = im->xsize;
+
+ if (chans) {
+ /* make sure we have good channel numbers */
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (chans[ch] < 0 || chans[ch] >= im->channels) {
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "No channel %d in this image", chans[ch]);
+ return -1;
+ }
+ }
+ while (l < r) {
+ i_color c;
+
+ i_gpix(im, l, y, &c);
+ for (ch = 0; ch < chan_count; ++ch)
+ c.channel[chans[ch]] = *samps++;
+ i_ppix(im, l, y, &c);
+ count += chan_count;
+ ++l;
+ }
+ }
+ else {
+ if (chan_count <= 0 || chan_count > im->channels) {
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "chan_count %d out of range, must be >0, <= channels",
+ chan_count);
+ return -1;
+ }
+
+ while (l < r) {
+ i_color c;
+
+ i_gpix(im, l, y, &c);
+ for (ch = 0; ch < chan_count; ++ch)
+ c.channel[ch] = *samps++;
+ i_ppix(im, l, y, &c);
+ count += chan_count;
+ ++l;
+ }
+ }
+
+ return count;
+ }
+ else {
+ dIMCTXim(im);
+ i_push_error(0, "Image position outside of image");
+ return -1;
+ }
+}
+
+/*
+=item i_psampf_p(im, l, r, y, samps, chans, chan_count)
+
+Implement psampf() for paletted images.
+
+Since writing samples doesn't really work as a concept for paletted
+images, this is slow.
+
+Also, writing samples may convert the image to a direct image in the
+process, so use i_ppixf/i_gpixf instead of directly calling the paletted
+handlers.
+
+=cut
+*/
+
+static i_img_dim
+i_psampf_p(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y,
+ const i_fsample_t *samps, const int *chans, int chan_count) {
+ if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
+ i_img_dim count = 0;
+ int ch;
+
+ if (r > im->xsize)
+ r = im->xsize;
+
+ if (chans) {
+ /* make sure we have good channel numbers */
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (chans[ch] < 0 || chans[ch] >= im->channels) {
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "No channel %d in this image", chans[ch]);
+ return -1;
+ }
+ }
+ while (l < r) {
+ i_fcolor c;
+
+ i_gpixf(im, l, y, &c);
+ for (ch = 0; ch < chan_count; ++ch)
+ c.channel[chans[ch]] = *samps++;
+ i_ppixf(im, l, y, &c);
+ count += chan_count;
+ ++l;
+ }
+ }
+ else {
+ if (chan_count <= 0 || chan_count > im->channels) {
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "chan_count %d out of range, must be >0, <= channels",
+ chan_count);
+ return -1;
+ }
+
+ while (l < r) {
+ i_fcolor c;
+
+ i_gpixf(im, l, y, &c);
+ for (ch = 0; ch < chan_count; ++ch)
+ c.channel[ch] = *samps++;
+ i_ppixf(im, l, y, &c);
+ count += chan_count;
+ ++l;
+ }
+ }
+
+ return count;
+ }
+ else {
+ dIMCTXim(im);
+ i_push_error(0, "Image position outside of image");
+ return -1;
+ }
+}
+
/*
=back
projects / imager.git / blobdiff