=cut
*/
+#define IMAGER_NO_CONTEXT
+
#include "imager.h"
#include "imageri.h"
int const *chans, int chan_count, int bits);
static i_img_dim i_psamp_bits_d16(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y, unsigned const *samps,
int const *chans, int chan_count, int bits);
+static i_img_dim i_psamp_d16(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_d16(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);
/*
=item IIM_base_16bit_direct
i_gsamp_bits_d16,
i_psamp_bits_d16,
+
+ i_psamp_d16,
+ i_psampf_d16
};
/* it's possible some platforms won't have a 16-bit integer type,
((((i_sample16_t *)(bytes))[offset]+127) / 257)
/*
-=item i_img_16_new(x, y, ch)
-
+=item im_img_16_new(ctx, x, y, ch)
+X<im_img_16_new API>X<i_img_16_new API>
=category Image creation/destruction
+=synopsis i_img *img = im_img_16_new(aIMCTX, width, height, channels);
=synopsis i_img *img = i_img_16_new(width, height, channels);
Create a new 16-bit/sample image.
Returns the image on success, or NULL on failure.
+Also callable as C<i_img_16_new(x, y, ch)>
+
=cut
*/
-i_img *i_img_16_new(i_img_dim x, i_img_dim y, int ch) {
+i_img *
+im_img_16_new(pIMCTX, i_img_dim x, i_img_dim y, int ch) {
i_img *im;
size_t bytes, line_bytes;
- mm_log((1,"i_img_16_new(x %" i_DF ", y %" i_DF ", ch %d)\n",
+ im_log((aIMCTX, 1,"i_img_16_new(x %" i_DF ", y %" i_DF ", ch %d)\n",
i_DFc(x), i_DFc(y), ch));
if (x < 1 || y < 1) {
- i_push_error(0, "Image sizes must be positive");
+ im_push_error(aIMCTX, 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);
+ im_push_errorf(aIMCTX, 0, "channels must be between 1 and %d", MAXCHANNELS);
return NULL;
}
bytes = x * y * ch * 2;
if (bytes / y / ch / 2 != x) {
- i_push_errorf(0, "integer overflow calculating image allocation");
+ im_push_errorf(aIMCTX, 0, "integer overflow calculating image allocation");
return NULL;
}
working with the image */
line_bytes = sizeof(i_fcolor) * x;
if (line_bytes / x != sizeof(i_fcolor)) {
- i_push_error(0, "integer overflow calculating scanline allocation");
+ im_push_error(aIMCTX, 0, "integer overflow calculating scanline allocation");
return NULL;
}
- im = i_img_alloc();
+ im = im_img_alloc(aIMCTX);
*im = IIM_base_16bit_direct;
i_tags_new(&im->tags);
im->xsize = x;
im->idata = mymalloc(im->bytes);
memset(im->idata, 0, im->bytes);
- i_img_init(im);
+ im_img_init(aIMCTX, im);
return im;
}
i_img *targ;
i_fcolor *line;
i_img_dim y;
+ dIMCTXim(im);
- targ = i_img_16_new(im->xsize, im->ysize, im->channels);
+ targ = im_img_16_new(aIMCTX, im->xsize, im->ysize, im->channels);
if (!targ)
return NULL;
line = mymalloc(sizeof(i_fcolor) * im->xsize);
/* 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]);
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "No channel %d in this image", chans[ch]);
return 0;
}
}
}
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;
}
/* 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]);
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "No channel %d in this image", chans[ch]);
return 0;
}
}
}
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;
}
/* 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]);
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "No channel %d in this image", chans[ch]);
return -1;
}
}
}
else {
if (chan_count <= 0 || chan_count > im->channels) {
+ dIMCTXim(im);
i_push_error(0, "Invalid channel count");
return -1;
}
return count;
}
else {
+ dIMCTXim(im);
i_push_error(0, "Image position outside of image");
return -1;
}
i_img_dim off;
if (bits != 16) {
+ dIMCTXim(im);
i_push_error(0, "Invalid bits for 16-bit image");
return -1;
}
/* 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]);
+ dIMCTXim(im);
+ im_push_errorf(aIMCTX, 0, "No channel %d in this image", chans[ch]);
return -1;
}
}
}
else {
if (chan_count <= 0 || chan_count > im->channels) {
+ dIMCTXim(im);
i_push_error(0, "Invalid channel count");
return -1;
}
return count;
}
else {
+ dIMCTXim(im);
+ i_push_error(0, "Image position outside of image");
+ return -1;
+ }
+}
+
+/*
+=item i_psamp_d16(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y, const i_sample_t *samps, int *chans, int chan_count)
+
+Writes sample values to im for the horizontal line (l, y) to (r-1,y)
+for the channels specified by chans, an array of int with chan_count
+elements.
+
+Returns the number of samples written (which should be (r-l) *
+bits_set(chan_mask)
+
+=cut
+*/
+
+static
+i_img_dim
+i_psamp_d16(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) {
+ int ch;
+ i_img_dim count, i, w;
+
+ if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
+ i_img_dim offset;
+ if (r > im->xsize)
+ r = im->xsize;
+ offset = (l+y*im->xsize) * im->channels;
+ w = r - l;
+ count = 0;
+
+ if (chans) {
+ /* make sure we have good channel numbers */
+ /* and test if all channels specified are in the mask */
+ int all_in_mask = 1;
+ 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;
+ }
+ if (!((1 << chans[ch]) & im->ch_mask))
+ all_in_mask = 0;
+ }
+ if (all_in_mask) {
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ STORE8as16(im->idata, offset + chans[ch], *samps);
+ ++samps;
+ ++count;
+ }
+ offset += im->channels;
+ }
+ }
+ else {
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (im->ch_mask & (1 << (chans[ch])))
+ STORE8as16(im->idata, offset + chans[ch], *samps);
+ ++samps;
+ ++count;
+ }
+ offset += im->channels;
+ }
+ }
+ }
+ 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;
+ }
+ for (i = 0; i < w; ++i) {
+ unsigned mask = 1;
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (im->ch_mask & mask)
+ STORE8as16(im->idata, offset + ch, *samps);
+ ++samps;
+ ++count;
+ mask <<= 1;
+ }
+ offset += im->channels;
+ }
+ }
+
+ return count;
+ }
+ else {
+ dIMCTXim(im);
+ i_push_error(0, "Image position outside of image");
+ return -1;
+ }
+}
+
+/*
+=item i_psampf_d16(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y, const i_fsample_t *samps, int *chans, int chan_count)
+
+Writes sample values to im for the horizontal line (l, y) to (r-1,y)
+for the channels specified by chans, an array of int with chan_count
+elements.
+
+Returns the number of samples written (which should be (r-l) *
+bits_set(chan_mask)
+
+=cut
+*/
+
+static
+i_img_dim
+i_psampf_d16(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) {
+ int ch;
+ i_img_dim count, i, w;
+
+ if (y >=0 && y < im->ysize && l < im->xsize && l >= 0) {
+ i_img_dim offset;
+ if (r > im->xsize)
+ r = im->xsize;
+ offset = (l+y*im->xsize) * im->channels;
+ w = r - l;
+ count = 0;
+
+ if (chans) {
+ /* make sure we have good channel numbers */
+ /* and test if all channels specified are in the mask */
+ int all_in_mask = 1;
+ 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;
+ }
+ if (!((1 << chans[ch]) & im->ch_mask))
+ all_in_mask = 0;
+ }
+ if (all_in_mask) {
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ unsigned samp16 = SampleFTo16(*samps);
+ STORE16(im->idata, offset + chans[ch], samp16);
+ ++samps;
+ ++count;
+ }
+ offset += im->channels;
+ }
+ }
+ else {
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (im->ch_mask & (1 << (chans[ch]))) {
+ unsigned samp16 = SampleFTo16(*samps);
+ STORE16(im->idata, offset + chans[ch], samp16);
+ }
+ ++samps;
+ ++count;
+ }
+ offset += im->channels;
+ }
+ }
+ }
+ 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;
+ }
+ for (i = 0; i < w; ++i) {
+ unsigned mask = 1;
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (im->ch_mask & mask) {
+ unsigned samp16 = SampleFTo16(*samps);
+ STORE16(im->idata, offset + ch, samp16);
+ }
+ ++samps;
+ ++count;
+ mask <<= 1;
+ }
+ offset += im->channels;
+ }
+ }
+
+ return count;
+ }
+ else {
+ dIMCTXim(im);
i_push_error(0, "Image position outside of image");
return -1;
}
projects / imager.git / blobdiff