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imagetest: Save PNG file using a helper function

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This allows to reuse the code to save a DIB to a file.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Uri Lublin <uril@redhat.com>
This commit is contained in:
Frediano Ziglio 2017-08-22 12:57:16 +01:00
parent aaeecf1294
commit 9c85f8d3ca
1 changed files with 18 additions and 10 deletions
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28
vdagent/imagetest.cpp
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@ -23,6 +23,23 @@
#include "image.h"
#include "imagepng.h"
static void
save_dib_to_file(ImageCoder& coder, const uint8_t *raw_dib, const char *filename)
{
const BITMAPINFO& info(*(BITMAPINFO*) raw_dib);
const uint8_t *raw_bits = &raw_dib[sizeof(BITMAPINFOHEADER) + 4 * info.bmiHeader.biClrUsed];
long size = 0;
uint8_t *raw_file = coder.from_bitmap(info, raw_bits, size);
assert(raw_file && size > 0);
FILE *f = fopen(filename, "wb");
assert(f);
assert(fwrite(raw_file, 1, size, f) == (unsigned long) size);
fclose(f);
free(raw_file);
}
int main(int argc, char **argv)
{
ImageCoder *coder = create_png_coder();
@ -66,16 +83,7 @@ int main(int argc, char **argv)
fclose(f);
// convert back to PNG
long png_size = 0;
uint8_t *png = coder->from_bitmap(*((BITMAPINFO*)&out[0]), &out[sizeof(BITMAPINFOHEADER) + 4 * info.biClrUsed], png_size);
assert(png && png_size > 0);
f = fopen(argc > 3 ? argv[3] : "out.png", "wb");
assert(f);
assert(fwrite(png, 1, png_size, f) == (unsigned long) png_size);
fclose(f);
free(png);
png = NULL;
save_dib_to_file(*coder, &out[0], argc > 3 ? argv[3] : "out.png");
return 0;
}