diff options
Diffstat (limited to '')
| -rw-r--r-- | src/png.h | 46 |
1 files changed, 41 insertions, 5 deletions
@@ -16,14 +16,50 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#ifdef __GNUC__ +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wpadded" +#endif +#include <png.h> +#ifdef __GNUC__ +# pragma GCC diagnostic pop +#endif + + + +/** + * Store a pixel to a PNG row buffer. + * + * @param PIXBUF:png_byte * The pixel buffer for the row. + * @param X3:long The column of the pixel multipled by 3. + * @param R:int The [0, 255]-value on the red subpixel. + * @param G:int The [0, 255]-value on the green subpixel. + * @param B:int The [0, 255]-value on the blue subpixel. + */ +#define SAVE_PNG_PIXEL(PIXBUF, X3, R, G, B) \ + ((PIXBUF)[(X3) + 0] = (png_byte)(R), \ + (PIXBUF)[(X3) + 1] = (png_byte)(G), \ + (PIXBUF)[(X3) + 2] = (png_byte)(B)) + +/** + * Store a row to a PNG image. + * + * @param PNGBUF:png_struct * The PNG image structure. + * @param PIXBUF:png_byte * The pixel buffer for the row. + */ +#define SAVE_PNG_ROW(PNGBUF, PIXBUF) \ + png_write_row (PNGBUF, PIXBUF) /** - * Convert an image from PNM to PNG. + * Create an PNG file. * - * @param fdin The file descriptor for the image to convert (PNM). - * @param fdout The file descriptor for the output image (PNG). - * @return Zero on success, -1 on error. + * @param fbfd The file descriptor connected to framebuffer device. + * @param width The width of the image. + * @param height The height of the image. + * @param imgfd The file descriptor connected to conversion process's stdin. + * @return Zero on success, -1 on error. */ -int convert (int fdin, int fdout); +int +save_png (int fbfd, long width, long height, int imgfd); |