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authorJörg Frings-Fürst <debian@jff.email>2022-02-01 15:24:35 +0100
committerJörg Frings-Fürst <debian@jff.email>2022-02-01 15:24:35 +0100
commit302276dc1b90cfc972fb726ca94a23b18f4b0088 (patch)
tree33d99da40fb5fa097fdab5584d7ed550d25a33bb /backend/escl/escl_jpeg.c
parent351b7328520c16730ceb46e5acae16038c42185e (diff)
New upstream version 1.1.1upstream/1.1.1
Diffstat (limited to 'backend/escl/escl_jpeg.c')
-rw-r--r--backend/escl/escl_jpeg.c53
1 files changed, 30 insertions, 23 deletions
diff --git a/backend/escl/escl_jpeg.c b/backend/escl/escl_jpeg.c
index 651e7c5..1dd3ec9 100644
--- a/backend/escl/escl_jpeg.c
+++ b/backend/escl/escl_jpeg.c
@@ -192,34 +192,41 @@ get_JPEG_data(capabilities_t *scanner, int *width, int *height, int *bps)
cinfo.out_color_space = JCS_RGB;
cinfo.quantize_colors = FALSE;
jpeg_calc_output_dimensions(&cinfo);
- if (cinfo.output_width < (unsigned int)scanner->caps[scanner->source].width)
- scanner->caps[scanner->source].width = cinfo.output_width;
- if (scanner->caps[scanner->source].pos_x < 0)
- scanner->caps[scanner->source].pos_x = 0;
-
- if (cinfo.output_height < (unsigned int)scanner->caps[scanner->source].height)
- scanner->caps[scanner->source].height = cinfo.output_height;
- if (scanner->caps[scanner->source].pos_y < 0)
- scanner->caps[scanner->source].pos_y = 0;
+ double ratio = (double)cinfo.output_width / (double)scanner->caps[scanner->source].width;
+ int rw = (int)((double)scanner->caps[scanner->source].width * ratio);
+ int rh = (int)((double)scanner->caps[scanner->source].height * ratio);
+ int rx = (int)((double)scanner->caps[scanner->source].pos_x * ratio);
+ int ry = (int)((double)scanner->caps[scanner->source].pos_y * ratio);
+
+
+ if (cinfo.output_width < (unsigned int)rw)
+ rw = cinfo.output_width;
+ if (rx < 0)
+ rx = 0;
+
+ if (cinfo.output_height < (unsigned int)rh)
+ rh = cinfo.output_height;
+ if (ry < 0)
+ ry = 0;
DBG(10, "1-JPEF Geometry [%dx%d|%dx%d]\n",
- scanner->caps[scanner->source].pos_x,
- scanner->caps[scanner->source].pos_y,
- scanner->caps[scanner->source].width,
- scanner->caps[scanner->source].height);
- x_off = scanner->caps[scanner->source].pos_x;
- if (x_off > (unsigned int)scanner->caps[scanner->source].width) {
- w = scanner->caps[scanner->source].width;
+ rx,
+ ry,
+ rw,
+ rh);
+ x_off = rx;
+ if (x_off > (unsigned int)rw) {
+ w = rw;
x_off = 0;
}
else
- w = scanner->caps[scanner->source].width - x_off;
- y_off = scanner->caps[scanner->source].pos_y;
- if(y_off > (unsigned int)scanner->caps[scanner->source].height) {
- h = scanner->caps[scanner->source].height;
+ w = rw - x_off;
+ y_off = ry;
+ if(y_off > (unsigned int)rh) {
+ h = rh;
y_off = 0;
}
else
- h = scanner->caps[scanner->source].height - y_off;
+ h = rh - y_off;
DBG(10, "2-JPEF Geometry [%dx%d|%dx%d]\n",
x_off,
y_off,
@@ -242,7 +249,7 @@ get_JPEG_data(capabilities_t *scanner, int *width, int *height, int *bps)
if (y_off > 0)
jpeg_skip_scanlines(&cinfo, y_off);
pos = 0;
- while (cinfo.output_scanline < (unsigned int)scanner->caps[scanner->source].height) {
+ while (cinfo.output_scanline < (unsigned int)rh) {
rowptr[0] = (JSAMPROW)surface + (lineSize * pos); // ..cinfo.output_scanline);
jpeg_read_scanlines(&cinfo, rowptr, (JDIMENSION) 1);
pos++;
@@ -253,7 +260,7 @@ get_JPEG_data(capabilities_t *scanner, int *width, int *height, int *bps)
*width = w;
*height = h;
*bps = cinfo.output_components;
- jpeg_finish_decompress(&cinfo);
+ // jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
fclose(scanner->tmp);
scanner->tmp = NULL;