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authorJörg Frings-Fürst <debian@jff-webhosting.net>2020-08-24 18:44:51 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2020-08-24 18:44:51 +0200
commitad38bc6ecb80ddeb562841b33258dd53659b1da6 (patch)
treee02e9c3ff760554fd87f70df0e18b88594091a48 /backend/escl/escl_jpeg.c
parent9c23ed018d72eed2554f4f9cff1ae6e6bb0cd479 (diff)
New upstream version 1.0.31upstream/1.0.31
Diffstat (limited to 'backend/escl/escl_jpeg.c')
-rw-r--r--backend/escl/escl_jpeg.c69
1 files changed, 56 insertions, 13 deletions
diff --git a/backend/escl/escl_jpeg.c b/backend/escl/escl_jpeg.c
index d6287ef..8d6b6b6 100644
--- a/backend/escl/escl_jpeg.c
+++ b/backend/escl/escl_jpeg.c
@@ -120,7 +120,6 @@ jpeg_RW_src(j_decompress_ptr cinfo, FILE *ctx)
if (cinfo->src == NULL) {
cinfo->src = (struct jpeg_source_mgr *)(*cinfo->mem->alloc_small)
((j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof(my_source_mgr));
- src = (my_source_mgr *) cinfo->src;
}
src = (my_source_mgr *) cinfo->src;
src->pub.init_source = init_source;
@@ -154,7 +153,7 @@ output_no_message(j_common_ptr __sane_unused__ cinfo)
* \return SANE_STATUS_GOOD (if everything is OK, otherwise, SANE_STATUS_NO_MEM/SANE_STATUS_INVAL)
*/
SANE_Status
-get_JPEG_data(capabilities_t *scanner, int *w, int *h, int *bps)
+get_JPEG_data(capabilities_t *scanner, int *width, int *height, int *bps)
{
int start = 0;
struct jpeg_decompress_struct cinfo;
@@ -162,6 +161,11 @@ get_JPEG_data(capabilities_t *scanner, int *w, int *h, int *bps)
unsigned char *surface = NULL;
struct my_error_mgr jerr;
int lineSize = 0;
+ JDIMENSION x_off = 0;
+ JDIMENSION y_off = 0;
+ JDIMENSION w = 0;
+ JDIMENSION h = 0;
+ int pos = 0;
if (scanner->tmp == NULL)
return (SANE_STATUS_INVAL);
@@ -174,6 +178,7 @@ get_JPEG_data(capabilities_t *scanner, int *w, int *h, int *bps)
jpeg_destroy_decompress(&cinfo);
if (surface != NULL)
free(surface);
+ fseek(scanner->tmp, start, SEEK_SET);
DBG( 1, "Escl Jpeg : Error reading jpeg\n");
if (scanner->tmp) {
fclose(scanner->tmp);
@@ -187,10 +192,42 @@ get_JPEG_data(capabilities_t *scanner, int *w, int *h, int *bps)
cinfo.out_color_space = JCS_RGB;
cinfo.quantize_colors = FALSE;
jpeg_calc_output_dimensions(&cinfo);
- surface = malloc(cinfo.output_width * cinfo.output_height * cinfo.output_components);
+ 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;
+ 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;
+ 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;
+ y_off = 0;
+ }
+ else
+ h = scanner->caps[scanner->source].height - y_off;
+ DBG(10, "2-JPEF Geometry [%dx%d|%dx%d]\n",
+ x_off,
+ y_off,
+ w,
+ h);
+ surface = malloc(w * h * cinfo.output_components);
if (surface == NULL) {
jpeg_destroy_decompress(&cinfo);
- fseek(scanner->tmp, start, SEEK_SET);
DBG( 1, "Escl Jpeg : Memory allocation problem\n");
if (scanner->tmp) {
fclose(scanner->tmp);
@@ -198,17 +235,23 @@ get_JPEG_data(capabilities_t *scanner, int *w, int *h, int *bps)
}
return (SANE_STATUS_NO_MEM);
}
- lineSize = cinfo.output_width * cinfo.output_components;
jpeg_start_decompress(&cinfo);
- while (cinfo.output_scanline < cinfo.output_height) {
- rowptr[0] = (JSAMPROW)surface + (lineSize * cinfo.output_scanline);
+ if (x_off > 0 || w < cinfo.output_width)
+ jpeg_crop_scanline(&cinfo, &x_off, &w);
+ lineSize = w * cinfo.output_components;
+ if (y_off > 0)
+ jpeg_skip_scanlines(&cinfo, y_off);
+ pos = 0;
+ while (cinfo.output_scanline < (unsigned int)scanner->caps[scanner->source].height) {
+ rowptr[0] = (JSAMPROW)surface + (lineSize * pos); // ..cinfo.output_scanline);
jpeg_read_scanlines(&cinfo, rowptr, (JDIMENSION) 1);
- }
+ pos++;
+ }
scanner->img_data = surface;
- scanner->img_size = lineSize * cinfo.output_height;
+ scanner->img_size = lineSize * h;
scanner->img_read = 0;
- *w = cinfo.output_width;
- *h = cinfo.output_height;
+ *width = w;
+ *height = h;
*bps = cinfo.output_components;
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
@@ -220,8 +263,8 @@ get_JPEG_data(capabilities_t *scanner, int *w, int *h, int *bps)
SANE_Status
get_JPEG_data(capabilities_t __sane_unused__ *scanner,
- int __sane_unused__ *w,
- int __sane_unused__ *h,
+ int __sane_unused__ *width,
+ int __sane_unused__ *height,
int __sane_unused__ *bps)
{
return (SANE_STATUS_INVAL);