| 25,7 → 25,7 |
|---|
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| #include <ofw.h> |
| #include <ofwarch.h> |
| #include <printf.h> |
| 372,23 → 372,30 |
|---|
| return true; |
| } |
| |
| #define RED(i) (((i) >> 5) & ((1 << 3) - 1)) |
| #define GREEN(i) (((i) >> 3) & ((1 << 2) - 1)) |
| #define BLUE(i) ((i) & ((1 << 3) - 1)) |
| #define CLIP(i) ((i) <= 255 ? (i) : 255) |
| |
| |
| /** |
| * Sets up the palette for the 8-bit color depth configuration so that the |
| * 3:2:3 color scheme can be used. Checks that setting the palette makes sense |
| * (appropriate nodes exist in the OBP tree and the color depth is not greater |
| * than 8). |
| * than 8). |
| * |
| * @return true if the palette has been set, false otherwise |
| * @return true if the palette has been set, false otherwise |
| * |
| */ |
| int setup_palette(void) |
| int ofw_setup_palette(void) |
| { |
| char device_name[BUF_SIZE]; |
| |
| /* resolve alias */ |
| if (ofw_get_property(ofw_aliases, "screen", device_name, |
| sizeof(device_name)) <= 0) |
| sizeof(device_name)) <= 0) |
| return false; |
| |
| |
| /* for depth greater than 8 it makes no sense to set up the palette */ |
| uint32_t depth; |
| phandle device = ofw_find_device(device_name); |
| 403,15 → 410,12 |
|---|
| ihandle screen = ofw_open(device_name); |
| if (screen == -1) |
| return false; |
| |
| |
| /* setup the palette so that the (inverted) 3:2:3 scheme is usable */ |
| unsigned int i; |
| for (i = 0; i < 256; i++) |
| if (ofw_call("call-method", 6, 1, NULL, "color!", screen, |
| 255 - i, |
| i << 5, |
| (i >> 3) << 6, |
| (i >> 5) << 5) != 0); |
| ofw_call("call-method", 6, 1, NULL, "color!", screen, |
| 255 - i, CLIP(BLUE(i) * 37), GREEN(i) * 85, CLIP(RED(i) * 37)); |
| return true; |
| } |
| |