1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
#include "evas_common.h"
#include "evas_private.h"
#include <stdio.h>
#include <jpeglib.h>
#include <setjmp.h>
static int evas_image_save_file_jpeg(RGBA_Image *im, const char *file, const char *key, int quality, int compress);
static Evas_Image_Save_Func evas_image_save_jpeg_func =
{
evas_image_save_file_jpeg
};
struct _JPEG_error_mgr
{
struct jpeg_error_mgr pub;
jmp_buf setjmp_buffer;
};
typedef struct _JPEG_error_mgr *emptr;
static void _JPEGFatalErrorHandler(j_common_ptr cinfo);
static void
_JPEGFatalErrorHandler(j_common_ptr cinfo)
{
emptr errmgr;
errmgr = (emptr) cinfo->err;
longjmp(errmgr->setjmp_buffer, 1);
return;
}
static void
_JPEGErrorHandler(j_common_ptr cinfo __UNUSED__)
{
/* emptr errmgr; */
/* errmgr = (emptr) cinfo->err; */
return;
}
static void
_JPEGErrorHandler2(j_common_ptr cinfo __UNUSED__, int msg_level __UNUSED__)
{
/* emptr errmgr; */
/* errmgr = (emptr) cinfo->err; */
return;
}
static int
save_image_jpeg(RGBA_Image *im, const char *file, int quality)
{
struct _JPEG_error_mgr jerr;
struct jpeg_compress_struct cinfo;
FILE *f;
DATA8 *buf;
DATA32 *ptr;
JSAMPROW *jbuf;
int y = 0;
if (!im || !im->image.data || !file)
return 0;
buf = alloca(im->cache_entry.w * 3 * sizeof(DATA8));
f = fopen(file, "wb");
if (!f)
{
return 0;
}
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);
fclose(f);
return 0;
}
jpeg_create_compress(&cinfo);
jpeg_stdio_dest(&cinfo, f);
cinfo.image_width = im->cache_entry.w;
cinfo.image_height = im->cache_entry.h;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
cinfo.optimize_coding = FALSE;
cinfo.dct_method = JDCT_ISLOW; // JDCT_FLOAT JDCT_IFAST(quality loss)
if (quality < 60) cinfo.dct_method = JDCT_IFAST;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, quality, TRUE);
if (quality >= 90)
{
cinfo.comp_info[0].h_samp_factor = 1;
cinfo.comp_info[0].v_samp_factor = 1;
cinfo.comp_info[1].h_samp_factor = 1;
cinfo.comp_info[1].v_samp_factor = 1;
cinfo.comp_info[2].h_samp_factor = 1;
cinfo.comp_info[2].v_samp_factor = 1;
}
jpeg_start_compress(&cinfo, TRUE);
ptr = im->image.data;
while (cinfo.next_scanline < cinfo.image_height)
{
unsigned int i, j;
for (j = 0, i = 0; i < im->cache_entry.w; i++)
{
buf[j++] = ((*ptr) >> 16) & 0xff;
buf[j++] = ((*ptr) >> 8) & 0xff;
buf[j++] = ((*ptr)) & 0xff;
ptr++;
}
jbuf = (JSAMPROW *) (&buf);
jpeg_write_scanlines(&cinfo, jbuf, 1);
y++;
}
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
fclose(f);
return 1;
}
static int evas_image_save_file_jpeg(RGBA_Image *im, const char *file, const char *key __UNUSED__, int quality, int compress __UNUSED__)
{
return save_image_jpeg(im, file, quality);
}
static int
module_open(Evas_Module *em)
{
if (!em) return 0;
em->functions = (void *)(&evas_image_save_jpeg_func);
return 1;
}
static void
module_close(Evas_Module *em __UNUSED__)
{
}
static Evas_Module_Api evas_modapi =
{
EVAS_MODULE_API_VERSION,
"jpeg",
"none",
{
module_open,
module_close
}
};
EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_SAVER, image_saver, jpeg);
#ifndef EVAS_STATIC_BUILD_JPEG
EVAS_EINA_MODULE_DEFINE(image_saver, jpeg);
#endif
|
