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/* Read and write formatted images to memory.
*
* Compile with:
*
* gcc -g -Wall new-from-buffer.c `pkg-config vips --cflags --libs`
*
*/
#include <vips/vips.h>
int
main(int argc, char **argv)
{
gchar *buf;
gsize len;
int i;
if (VIPS_INIT(argv[0]))
vips_error_exit(NULL);
if (argc != 2)
vips_error_exit("usage: %s FILENAME", argv[0]);
if (!g_file_get_contents(argv[1], &buf, &len, NULL))
vips_error_exit(NULL);
for (i = 0; i < 10; i++) {
VipsImage *image;
void *new_buf;
size_t new_len;
printf("loop %d ...\n", i);
if (!(image = vips_image_new_from_buffer(buf, len, "",
"access", VIPS_ACCESS_SEQUENTIAL,
NULL)))
vips_error_exit(NULL);
if (vips_image_write_to_buffer(image,
".jpg", &new_buf, &new_len,
"Q", 95,
NULL))
vips_error_exit(NULL);
g_object_unref(image);
g_free(new_buf);
}
g_free(buf);
vips_shutdown();
return 0;
}
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