forked from old/legacy-imlib2
359 lines
8.9 KiB
C
359 lines
8.9 KiB
C
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include "common.h"
|
|
#include <string.h>
|
|
#include <X11/Xlib.h>
|
|
#include <X11/extensions/XShm.h>
|
|
#include <X11/Xutil.h>
|
|
#include "image.h"
|
|
#include <jpeglib.h>
|
|
#include <setjmp.h>
|
|
|
|
struct ImLib_JPEG_error_mgr
|
|
{
|
|
struct jpeg_error_mgr pub;
|
|
sigjmp_buf setjmp_buffer;
|
|
};
|
|
typedef struct ImLib_JPEG_error_mgr *emptr;
|
|
|
|
void _JPEGFatalErrorHandler(j_common_ptr cinfo);
|
|
void _JPEGErrorHandler(j_common_ptr cinfo);
|
|
void _JPEGErrorHandler2(j_common_ptr cinfo, int msg_level);
|
|
char load (ImlibImage *im, ImlibProgressFunction progress,
|
|
char progress_granularity, char immediate_load);
|
|
char save (ImlibImage *im, ImlibProgressFunction progress,
|
|
char progress_granularity);
|
|
void formats (ImlibLoader *l);
|
|
|
|
void
|
|
_JPEGFatalErrorHandler(j_common_ptr cinfo)
|
|
{
|
|
emptr errmgr;
|
|
|
|
errmgr = (emptr) cinfo->err;
|
|
/* cinfo->err->output_message(cinfo);*/
|
|
siglongjmp(errmgr->setjmp_buffer, 1);
|
|
return;
|
|
}
|
|
|
|
void
|
|
_JPEGErrorHandler(j_common_ptr cinfo)
|
|
{
|
|
emptr errmgr;
|
|
|
|
errmgr = (emptr) cinfo->err;
|
|
/* cinfo->err->output_message(cinfo);*/
|
|
/* siglongjmp(errmgr->setjmp_buffer, 1);*/
|
|
return;
|
|
}
|
|
|
|
void
|
|
_JPEGErrorHandler2(j_common_ptr cinfo, int msg_level)
|
|
{
|
|
emptr errmgr;
|
|
|
|
errmgr = (emptr) cinfo->err;
|
|
/* cinfo->err->output_message(cinfo);*/
|
|
/* siglongjmp(errmgr->setjmp_buffer, 1);*/
|
|
return;
|
|
msg_level = 0;
|
|
}
|
|
|
|
char
|
|
load (ImlibImage *im, ImlibProgressFunction progress,
|
|
char progress_granularity, char immediate_load)
|
|
{
|
|
int w, h;
|
|
struct jpeg_decompress_struct cinfo;
|
|
struct ImLib_JPEG_error_mgr jerr;
|
|
FILE *f;
|
|
|
|
if (im->data)
|
|
return 0;
|
|
f = fopen(im->file, "rb");
|
|
if (!f)
|
|
return 0;
|
|
cinfo.err = jpeg_std_error(&(jerr.pub));
|
|
jerr.pub.error_exit = _JPEGFatalErrorHandler;
|
|
jerr.pub.emit_message = _JPEGErrorHandler2;
|
|
jerr.pub.output_message = _JPEGErrorHandler;
|
|
if (sigsetjmp(jerr.setjmp_buffer, 1))
|
|
{
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
jpeg_create_decompress(&cinfo);
|
|
jpeg_stdio_src(&cinfo, f);
|
|
jpeg_read_header(&cinfo, TRUE);
|
|
cinfo.do_fancy_upsampling = FALSE;
|
|
cinfo.do_block_smoothing = FALSE;
|
|
jpeg_start_decompress(&cinfo);
|
|
if ((!im->loader) && (!im->data))
|
|
{
|
|
im->w = w = cinfo.output_width;
|
|
im->h = h = cinfo.output_height;
|
|
UNSET_FLAG(im->flags, F_HAS_ALPHA);
|
|
im->format = strdup("jpeg");
|
|
}
|
|
if (((!im->data) && (im->loader)) || (immediate_load) || (progress))
|
|
{
|
|
DATA8 *ptr, *line[16], *data;
|
|
DATA32 *ptr2;
|
|
int x, y, l, i, scans, count, prevy;
|
|
|
|
im->w = w = cinfo.output_width;
|
|
im->h = h = cinfo.output_height;
|
|
|
|
if (cinfo.rec_outbuf_height > 16)
|
|
{
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
data = malloc(w * 16 * 3);
|
|
if (!data)
|
|
{
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
/* must set the im->data member before callign progress function */
|
|
ptr2 = im->data = malloc(w * h * sizeof(DATA32));
|
|
if (!im->data)
|
|
{
|
|
free(data);
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
count = 0;
|
|
prevy = 0;
|
|
if (cinfo.output_components == 3)
|
|
{
|
|
for (i = 0; i < cinfo.rec_outbuf_height; i++)
|
|
line[i] = data + (i * w * 3);
|
|
for (l = 0; l < h; l += cinfo.rec_outbuf_height)
|
|
{
|
|
jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height);
|
|
scans = cinfo.rec_outbuf_height;
|
|
if ((h - l) < scans)
|
|
scans = h - l;
|
|
ptr = data;
|
|
for (y = 0; y < scans; y++)
|
|
{
|
|
for (x = 0; x < w; x++)
|
|
{
|
|
*ptr2 = (0xff000000) |
|
|
((ptr[0]) << 16) |
|
|
((ptr[1]) << 8) |
|
|
(ptr[2]);
|
|
ptr += 3;
|
|
ptr2 ++;
|
|
}
|
|
}
|
|
if (progress)
|
|
{
|
|
int per;
|
|
|
|
per = (l * 100) / h;
|
|
if (((per - count) >= progress_granularity) ||
|
|
((h - l) <= cinfo.rec_outbuf_height))
|
|
{
|
|
count = per;
|
|
if(!progress(im, per, 0, prevy, w, scans + l - prevy))
|
|
{
|
|
free(data);
|
|
jpeg_finish_decompress(&cinfo);
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(f);
|
|
return 2;
|
|
}
|
|
prevy = l + scans;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (cinfo.output_components == 1)
|
|
{
|
|
for (i = 0; i < cinfo.rec_outbuf_height; i++)
|
|
line[i] = data + (i * w);
|
|
for (l = 0; l < h; l += cinfo.rec_outbuf_height)
|
|
{
|
|
jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height);
|
|
scans = cinfo.rec_outbuf_height;
|
|
if ((h - l) < scans)
|
|
scans = h - l;
|
|
ptr = data;
|
|
for (y = 0; y < scans; y++)
|
|
{
|
|
for (x = 0; x < w; x++)
|
|
{
|
|
*ptr2 = (0xff000000) |
|
|
((ptr[0]) << 16) |
|
|
((ptr[0]) << 8) |
|
|
(ptr[0]);
|
|
ptr ++;
|
|
ptr2 ++;
|
|
}
|
|
}
|
|
if (progress)
|
|
{
|
|
int per;
|
|
|
|
per = (l * 100) / h;
|
|
if (((per - count) >= progress_granularity) ||
|
|
((h - l) <= cinfo.rec_outbuf_height))
|
|
{
|
|
count = per;
|
|
if(!progress(im, per, 0, prevy, w, l + scans - prevy))
|
|
{
|
|
free(data);
|
|
jpeg_finish_decompress(&cinfo);
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(f);
|
|
return 2;
|
|
}
|
|
prevy = l + scans;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
free(data);
|
|
}
|
|
jpeg_finish_decompress(&cinfo);
|
|
jpeg_destroy_decompress(&cinfo);
|
|
fclose(f);
|
|
return 1;
|
|
}
|
|
|
|
char
|
|
save (ImlibImage *im, ImlibProgressFunction progress,
|
|
char progress_granularity)
|
|
{
|
|
struct jpeg_compress_struct cinfo;
|
|
struct ImLib_JPEG_error_mgr jerr;
|
|
FILE *f;
|
|
DATA8 *buf;
|
|
DATA32 *ptr;
|
|
JSAMPROW *jbuf;
|
|
int y = 0, quality = 75;
|
|
ImlibImageTag *tag;
|
|
int i, j, pl = 0;
|
|
char pper = 0;
|
|
|
|
|
|
/* no image data? abort */
|
|
if (!im->data)
|
|
return 0;
|
|
/* allocate a small buffer to convert image data */
|
|
buf = malloc(im->w * 3 * sizeof(DATA8));
|
|
if (!buf)
|
|
return 0;
|
|
f = fopen(im->file, "wb");
|
|
if (!f)
|
|
{
|
|
free(buf);
|
|
return 0;
|
|
}
|
|
/* set up error handling */
|
|
jerr.pub.error_exit = _JPEGFatalErrorHandler;
|
|
jerr.pub.emit_message = _JPEGErrorHandler2;
|
|
jerr.pub.output_message = _JPEGErrorHandler;
|
|
cinfo.err = jpeg_std_error(&(jerr.pub));
|
|
if (sigsetjmp(jerr.setjmp_buffer, 1))
|
|
{
|
|
jpeg_destroy_compress(&cinfo);
|
|
free(buf);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
/* setup compress params */
|
|
jpeg_create_compress(&cinfo);
|
|
jpeg_stdio_dest(&cinfo, f);
|
|
cinfo.image_width = im->w;
|
|
cinfo.image_height = im->h;
|
|
cinfo.input_components = 3;
|
|
cinfo.in_color_space = JCS_RGB;
|
|
|
|
/* look for tags attached to image to get extra parameters liek quality */
|
|
/* settigns etc. - thsi si the "api" to hint for extra information for */
|
|
/* saver modules */
|
|
tag = __imlib_GetTag(im, "quality");
|
|
if (tag)
|
|
quality = tag->val;
|
|
if (quality < 1)
|
|
quality = 1;
|
|
if (quality > 100)
|
|
quality = 100;
|
|
|
|
/* set up jepg compression parameters */
|
|
jpeg_set_defaults(&cinfo);
|
|
jpeg_set_quality(&cinfo, quality, TRUE);
|
|
jpeg_start_compress(&cinfo, TRUE);
|
|
/* get the start pointer */
|
|
ptr = im->data;
|
|
/* go one scanline at a time... and save */
|
|
while (cinfo.next_scanline < cinfo.image_height)
|
|
{
|
|
/* convcert scaline from ARGB to RGB packed */
|
|
for (j = 0, i = 0; i < im->w; i++)
|
|
{
|
|
buf[j++] = ((*ptr) >> 16) & 0xff;
|
|
buf[j++] = ((*ptr) >> 8 ) & 0xff;
|
|
buf[j++] = ((*ptr) ) & 0xff;
|
|
ptr++;
|
|
}
|
|
/* write scanline */
|
|
jbuf = (JSAMPROW *)(&buf);
|
|
jpeg_write_scanlines(&cinfo, jbuf, 1);
|
|
y++;
|
|
if (progress)
|
|
{
|
|
char per;
|
|
int l;
|
|
|
|
per = (char)((100 * y) / im->h);
|
|
if (((per - pper) >= progress_granularity) ||
|
|
(y == (im->h - 1)))
|
|
{
|
|
l = y - pl;
|
|
if(!progress(im, per, 0, (y - l), im->w, l))
|
|
{
|
|
jpeg_finish_compress(&cinfo);
|
|
free(buf);
|
|
fclose(f);
|
|
return 2;
|
|
}
|
|
pper = per;
|
|
pl = y;
|
|
}
|
|
}
|
|
}
|
|
/* finish off */
|
|
jpeg_finish_compress(&cinfo);
|
|
free(buf);
|
|
fclose(f);
|
|
return 1;
|
|
progress = NULL;
|
|
}
|
|
|
|
void
|
|
formats (ImlibLoader *l)
|
|
{
|
|
char *list_formats[] =
|
|
{ "jpg", "jpeg", "jfif", "jfi" };
|
|
|
|
{
|
|
int i;
|
|
|
|
l->num_formats = (sizeof(list_formats) / sizeof (char *));
|
|
l->formats = malloc(sizeof(char *) * l->num_formats);
|
|
for (i = 0; i < l->num_formats; i++)
|
|
l->formats[i] = strdup(list_formats[i]);
|
|
}
|
|
}
|
|
|