192 * int red = (array[i+0] & 0xff);
193 * int green = (array[i+1] & 0xff);
194 * int blue = (array[i+2] & 0xff);
195 * }</pre>
196 *
197 * @return a {@code PixelFormat<ByteBuffer>} describing the
198 * indicated pixel format
199 */
200 public static PixelFormat<ByteBuffer> getByteRgbInstance() {
201 return ByteRgb.instance;
202 }
203
204 /**
205 * Creates a {@code PixelFormat} instance describing a pixel layout
206 * with the pixels stored as single bytes representing an index
207 * into the specified lookup table of <b>premultiplied</b> color
208 * values in the {@link Type#INT_ARGB_PRE INT_ARGB_PRE} format.
209 * <p>
210 * Pixels in this format can be decoded using the following sample code:
211 * <pre>{@code
212 * int pixel = array[rowstart + x] & 0xff;
213 * int argb = colors[pixel];
214 *
215 * int alpha = ((argb >> 24) & 0xff);
216 * int red = ((argb >> 16) & 0xff);
217 * int green = ((argb >> 8) & 0xff);
218 * int blue = ((argb ) & 0xff);
219 * }</pre>
220 *
221 * @param colors an {@code int[]} array of 32-bit color values in
222 * the {@link Type#INT_ARGB_PRE INT_ARGB_PRE} format
223 * @return a {@code PixelFormat<ByteBuffer>} describing the indicated
224 * pixel format with the specified list of premultiplied colors
225 */
226 public static PixelFormat<ByteBuffer>
227 createByteIndexedPremultipliedInstance(int colors[])
228 {
229 return IndexedPixelFormat.createByte(colors, true);
230 }
231
232 /**
233 * Creates a {@code PixelFormat} instance describing a pixel layout
234 * with the pixels stored as single bytes representing an index
235 * into the specified lookup table of <b>non-premultiplied</b> color
236 * values in the {@link Type#INT_ARGB INT_ARGB} format.
237 * <p>
238 * Pixels in this format can be decoded using the following sample code:
239 * <pre>{@code
240 * int pixel = array[rowstart + x] & 0xff;
241 * int argb = colors[pixel];
242 *
243 * int alpha = ((argb >> 24) & 0xff);
244 * int red = ((argb >> 16) & 0xff);
245 * int green = ((argb >> 8) & 0xff);
246 * int blue = ((argb ) & 0xff);
247 * }</pre>
248 *
249 * @param colors an {@code int[]} array of 32-bit color values in
250 * the {@link Type#INT_ARGB INT_ARGB} format
251 * @return a {@code PixelFormat<ByteBuffer>} describing the indicated
252 * pixel format with the specified list of non-premultiplied colors
253 */
254 public static PixelFormat<ByteBuffer>
255 createByteIndexedInstance(int colors[])
256 {
257 return IndexedPixelFormat.createByte(colors, false);
258 }
259
260 /**
|
192 * int red = (array[i+0] & 0xff);
193 * int green = (array[i+1] & 0xff);
194 * int blue = (array[i+2] & 0xff);
195 * }</pre>
196 *
197 * @return a {@code PixelFormat<ByteBuffer>} describing the
198 * indicated pixel format
199 */
200 public static PixelFormat<ByteBuffer> getByteRgbInstance() {
201 return ByteRgb.instance;
202 }
203
204 /**
205 * Creates a {@code PixelFormat} instance describing a pixel layout
206 * with the pixels stored as single bytes representing an index
207 * into the specified lookup table of <b>premultiplied</b> color
208 * values in the {@link Type#INT_ARGB_PRE INT_ARGB_PRE} format.
209 * <p>
210 * Pixels in this format can be decoded using the following sample code:
211 * <pre>{@code
212 * int pixel = array[rowstart + x] & 0xff;
213 * int argb = colors[pixel];
214 *
215 * int alpha = ((argb >> 24) & 0xff);
216 * int red = ((argb >> 16) & 0xff);
217 * int green = ((argb >> 8) & 0xff);
218 * int blue = ((argb ) & 0xff);
219 * }</pre>
220 *
221 * @param colors an {@code int[]} array of 32-bit color values in
222 * the {@link Type#INT_ARGB_PRE INT_ARGB_PRE} format
223 * @return a {@code PixelFormat<ByteBuffer>} describing the indicated
224 * pixel format with the specified list of premultiplied colors
225 */
226 public static PixelFormat<ByteBuffer>
227 createByteIndexedPremultipliedInstance(int colors[])
228 {
229 return IndexedPixelFormat.createByte(colors, true);
230 }
231
232 /**
233 * Creates a {@code PixelFormat} instance describing a pixel layout
234 * with the pixels stored as single bytes representing an index
235 * into the specified lookup table of <b>non-premultiplied</b> color
236 * values in the {@link Type#INT_ARGB INT_ARGB} format.
237 * <p>
238 * Pixels in this format can be decoded using the following sample code:
239 * <pre>{@code
240 * int pixel = array[rowstart + x] & 0xff;
241 * int argb = colors[pixel];
242 *
243 * int alpha = ((argb >> 24) & 0xff);
244 * int red = ((argb >> 16) & 0xff);
245 * int green = ((argb >> 8) & 0xff);
246 * int blue = ((argb ) & 0xff);
247 * }</pre>
248 *
249 * @param colors an {@code int[]} array of 32-bit color values in
250 * the {@link Type#INT_ARGB INT_ARGB} format
251 * @return a {@code PixelFormat<ByteBuffer>} describing the indicated
252 * pixel format with the specified list of non-premultiplied colors
253 */
254 public static PixelFormat<ByteBuffer>
255 createByteIndexedInstance(int colors[])
256 {
257 return IndexedPixelFormat.createByte(colors, false);
258 }
259
260 /**
|