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comparison utils/frmconv/out_png.c @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
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-1:000000000000 0:4a0efb7baf70
1 #ifdef _WIN32
2 #define ssize_t int
3 #include <io.h>
4 #include <sys/types.h>
5 #include <Winsock2.h>
6 #else
7 #include <netinet/in.h>
8 #include <unistd.h>
9 #endif
10
11 #include <stdio.h>
12
13 #include <png.h>
14
15 #include "frm.h"
16 #include "out_png.h"
17
18
19
20 void png_my_error(png_structp a, png_const_charp b) {
21 printf("png_my_error: %s\n", b);
22 }
23 void png_my_warning(png_structp a, png_const_charp b) {
24 printf("png_my_warn: %s\n", b);
25 }
26
27 void writePNGFile(frm_frame *frame, frm_color *pal, FILE *file) {
28 if (!file) {
29 printf("ERR: write open failed\n");
30 return;
31 }
32
33 png_structp png_ptr = png_create_write_struct( PNG_LIBPNG_VER_STRING, NULL, png_my_error, png_my_warning);
34 if (!png_ptr)
35 return;
36
37 png_infop info_ptr = png_create_info_struct(png_ptr);
38 if (!info_ptr) {
39 png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
40 return;
41 }
42
43 if (setjmp(png_jmpbuf(png_ptr))) {
44 png_destroy_write_struct(&png_ptr, &info_ptr);
45 printf("Error: return setjmp\n");
46 return;
47 }
48
49 png_init_io(png_ptr, file);
50 png_set_IHDR(png_ptr, info_ptr, frame->width, frame->height, 8, PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
51
52 png_set_PLTE(png_ptr, info_ptr, (png_color*)pal, 256);
53 png_set_rows(png_ptr, info_ptr, frame->rowptr);
54 png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);
55 }