int const *chans, int chan_count);
static int i_gsampf_d16(i_img *im, int l, int r, int y, i_fsample_t *samps,
int const *chans, int chan_count);
+static int i_gsamp_bits_d16(i_img *im, int l, int r, int y, unsigned *samps,
+ int const *chans, int chan_count, int bits);
+static int i_psamp_bits_d16(i_img *im, int l, int r, int y, unsigned const *samps,
+ int const *chans, int chan_count, int bits);
/*
=item IIM_base_16bit_direct
NULL, /* i_f_gpal */
NULL, /* i_f_ppal */
- NULL, /* i_f_addcolor */
- NULL, /* i_f_getcolor */
+ 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_d16,
+ i_psamp_bits_d16,
};
/* it's possible some platforms won't have a 16-bit integer type,
#define STORE16(bytes, offset, word) \
(((i_sample16_t *)(bytes))[offset] = (word))
#define STORE8as16(bytes, offset, byte) \
- (((i_sample16_t *)(bytes))[offset] = (byte) * 256)
+ (((i_sample16_t *)(bytes))[offset] = (byte) * 256 + (byte))
#define GET16(bytes, offset) \
(((i_sample16_t *)(bytes))[offset])
-#define GET16as8(bytes, offset) \
- (((i_sample16_t *)(bytes))[offset] / 256)
-
#else
/* we have to do this the hard way */
(((unsigned char *)(bytes))[(offset)*2+1] = (word) & 0xFF))
#define STORE8as16(bytes, offset, byte) \
((((unsigned char *)(bytes))[(offset)*2] = (byte)), \
- (((unsigned char *)(bytes))[(offset)*2+1] = 0))
+ (((unsigned char *)(bytes))[(offset)*2+1] = (byte)))
#define GET16(bytes, offset) \
(((unsigned char *)(bytes))[(offset)*2] * 256 \
+ ((unsigned char *)(bytes))[(offset)*2+1])
-#define GET16as8(bytes, offset) \
- (((unsigned char *)(bytes))[(offset)*2] << 8)
#endif
+#define GET16as8(bytes, offset) \
+ ((((i_sample16_t *)(bytes))[offset]+127) / 257)
+
/*
-=item i_img_16_new_low(int x, int y, int ch)
+=item i_img_16_new(x, y, ch)
-Creates a new 16-bit per sample image.
+=category Image creation/destruction
+=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.
=cut
*/
-i_img *i_img_16_new_low(i_img *im, int x, int y, int ch) {
+
+i_img *i_img_16_new(int x, int y, int ch) {
+ i_img *im;
int bytes, line_bytes;
+
mm_log((1,"i_img_16_new(x %d, y %d, ch %d)\n", x, y, ch));
if (x < 1 || y < 1) {
return NULL;
}
+ im = i_img_alloc();
*im = IIM_base_16bit_direct;
i_tags_new(&im->tags);
im->xsize = x;
im->bytes = bytes;
im->ext_data = NULL;
im->idata = mymalloc(im->bytes);
- if (im->idata) {
- memset(im->idata, 0, im->bytes);
- }
- else {
- i_tags_destroy(&im->tags);
- im = NULL;
- }
-
- return im;
-}
-
-/*
-=item i_img_16_new(x, y, ch)
-
-=category Image creation
-
-Create a new 16-bit/sample image.
-
-Returns the image on success, or NULL on failure.
+ memset(im->idata, 0, im->bytes);
-=cut
-*/
+ i_img_init(im);
-i_img *i_img_16_new(int x, int y, int ch) {
- i_img *im;
-
- i_clear_error();
-
- im = mymalloc(sizeof(i_img));
- if (im) {
- if (!i_img_16_new_low(im, x, y, ch)) {
- myfree(im);
- im = NULL;
- }
- }
-
- mm_log((1, "(%p) <- i_img_16_new\n", im));
-
return im;
}
}
}
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++ = GET16as8(im->idata, off+ch);
}
}
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++ = Sample16ToF(GET16(im->idata, off+ch));
}
}
+static int
+i_gsamp_bits_d16(i_img *im, int l, int r, int y, unsigned *samps,
+ int const *chans, int chan_count, int bits) {
+ int ch, count, i, w;
+ int off;
+
+ if (bits != 16) {
+ return i_gsamp_bits_fb(im, l, r, y, samps, chans, chan_count, bits);
+ }
+
+ 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 -1;
+ }
+ }
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ *samps++ = GET16(im->idata, off+chans[ch]);
+ ++count;
+ }
+ off += im->channels;
+ }
+ }
+ else {
+ if (chan_count <= 0 || chan_count > im->channels) {
+ i_push_error(0, "Invalid channel count");
+ return -1;
+ }
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ *samps++ = GET16(im->idata, off+ch);
+ ++count;
+ }
+ off += im->channels;
+ }
+ }
+
+ return count;
+ }
+ else {
+ i_push_error(0, "Image position outside of image");
+ return -1;
+ }
+}
+
+static int
+i_psamp_bits_d16(i_img *im, int l, int r, int y, unsigned const *samps,
+ int const *chans, int chan_count, int bits) {
+ int ch, count, i, w;
+ int off;
+
+ if (bits != 16) {
+ i_push_error(0, "Invalid bits for 16-bit image");
+ return -1;
+ }
+
+ 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 -1;
+ }
+ }
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (im->ch_mask & (1 << ch))
+ STORE16(im->idata, off+chans[ch], *samps);
+ ++samps;
+ ++count;
+ }
+ off += im->channels;
+ }
+ }
+ else {
+ if (chan_count <= 0 || chan_count > im->channels) {
+ i_push_error(0, "Invalid channel count");
+ return -1;
+ }
+ for (i = 0; i < w; ++i) {
+ for (ch = 0; ch < chan_count; ++ch) {
+ if (im->ch_mask & (1 << ch))
+ STORE16(im->idata, off+ch, *samps);
+ ++samps;
+ ++count;
+ }
+ off += im->channels;
+ }
+ }
+
+ return count;
+ }
+ else {
+ i_push_error(0, "Image position outside of image");
+ return -1;
+ }
+}
+
/*
=back
projects / imager.git / blobdiff