1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.graphics; 18 19 public class ImageFormat { 20 /* 21 * these constants are chosen to be binary compatible with their previous 22 * location in PixelFormat.java 23 */ 24 25 public static final int UNKNOWN = 0; 26 27 /** 28 * RGB format used for pictures encoded as RGB_565. See 29 * {@link android.hardware.Camera.Parameters#setPictureFormat(int)}. 30 */ 31 public static final int RGB_565 = 4; 32 33 /** 34 * <p>Android YUV format.</p> 35 * 36 * <p>This format is exposed to software decoders and applications.</p> 37 * 38 * <p>YV12 is a 4:2:0 YCrCb planar format comprised of a WxH Y plane followed 39 * by (W/2) x (H/2) Cr and Cb planes.</p> 40 * 41 * <p>This format assumes 42 * <ul> 43 * <li>an even width</li> 44 * <li>an even height</li> 45 * <li>a horizontal stride multiple of 16 pixels</li> 46 * <li>a vertical stride equal to the height</li> 47 * </ul> 48 * </p> 49 * 50 * <pre> y_size = stride * height 51 * c_stride = ALIGN(stride/2, 16) 52 * c_size = c_stride * height/2 53 * size = y_size + c_size * 2 54 * cr_offset = y_size 55 * cb_offset = y_size + c_size</pre> 56 * 57 * <p>For the {@link android.hardware.camera2} API, the {@link #YUV_420_888} format is 58 * recommended for YUV output instead.</p> 59 * 60 * <p>For the older camera API, this format is guaranteed to be supported for 61 * {@link android.hardware.Camera} preview images since API level 12; for earlier API versions, 62 * check {@link android.hardware.Camera.Parameters#getSupportedPreviewFormats()}. 63 * 64 * <p>Note that for camera preview callback use (see 65 * {@link android.hardware.Camera#setPreviewCallback}), the 66 * <var>stride</var> value is the smallest possible; that is, it is equal 67 * to: 68 * 69 * <pre>stride = ALIGN(width, 16)</pre> 70 * 71 * @see android.hardware.Camera.Parameters#setPreviewCallback 72 * @see android.hardware.Camera.Parameters#setPreviewFormat 73 * @see android.hardware.Camera.Parameters#getSupportedPreviewFormats 74 * </p> 75 */ 76 public static final int YV12 = 0x32315659; 77 78 /** 79 * <p>Android Y8 format.</p> 80 * 81 * <p>Y8 is a YUV planar format comprised of a WxH Y plane only, with each pixel 82 * being represented by 8 bits. It is equivalent to just the Y plane from {@link #YV12} 83 * format.</p> 84 * 85 * <p>This format assumes 86 * <ul> 87 * <li>an even width</li> 88 * <li>an even height</li> 89 * <li>a horizontal stride multiple of 16 pixels</li> 90 * </ul> 91 * </p> 92 * 93 * <pre> y_size = stride * height </pre> 94 * 95 * <p>For example, the {@link android.media.Image} object can provide data 96 * in this format from a {@link android.hardware.camera2.CameraDevice} 97 * through a {@link android.media.ImageReader} object if this format is 98 * supported by {@link android.hardware.camera2.CameraDevice}.</p> 99 * 100 * @see android.media.Image 101 * @see android.media.ImageReader 102 * @see android.hardware.camera2.CameraDevice 103 * 104 * @hide 105 */ 106 public static final int Y8 = 0x20203859; 107 108 /** 109 * <p>Android Y16 format.</p> 110 * 111 * Y16 is a YUV planar format comprised of a WxH Y plane, with each pixel 112 * being represented by 16 bits. It is just like {@link #Y8}, but has 16 113 * bits per pixel (little endian).</p> 114 * 115 * <p>This format assumes 116 * <ul> 117 * <li>an even width</li> 118 * <li>an even height</li> 119 * <li>a horizontal stride multiple of 16 pixels</li> 120 * </ul> 121 * </p> 122 * 123 * <pre> y_size = stride * height </pre> 124 * 125 * <p>For example, the {@link android.media.Image} object can provide data 126 * in this format from a {@link android.hardware.camera2.CameraDevice} 127 * through a {@link android.media.ImageReader} object if this format is 128 * supported by {@link android.hardware.camera2.CameraDevice}.</p> 129 * 130 * @see android.media.Image 131 * @see android.media.ImageReader 132 * @see android.hardware.camera2.CameraDevice 133 * 134 * @hide 135 */ 136 public static final int Y16 = 0x20363159; 137 138 /** 139 * YCbCr format, used for video. 140 * 141 * <p>For the {@link android.hardware.camera2} API, the {@link #YUV_420_888} format is 142 * recommended for YUV output instead.</p> 143 * 144 * <p>Whether this format is supported by the old camera API can be determined by 145 * {@link android.hardware.Camera.Parameters#getSupportedPreviewFormats()}.</p> 146 * 147 */ 148 public static final int NV16 = 0x10; 149 150 /** 151 * YCrCb format used for images, which uses the NV21 encoding format. 152 * 153 * <p>This is the default format 154 * for {@link android.hardware.Camera} preview images, when not otherwise set with 155 * {@link android.hardware.Camera.Parameters#setPreviewFormat(int)}.</p> 156 * 157 * <p>For the {@link android.hardware.camera2} API, the {@link #YUV_420_888} format is 158 * recommended for YUV output instead.</p> 159 */ 160 public static final int NV21 = 0x11; 161 162 /** 163 * YCbCr format used for images, which uses YUYV (YUY2) encoding format. 164 * 165 * <p>For the {@link android.hardware.camera2} API, the {@link #YUV_420_888} format is 166 * recommended for YUV output instead.</p> 167 * 168 * <p>This is an alternative format for {@link android.hardware.Camera} preview images. Whether 169 * this format is supported by the camera hardware can be determined by 170 * {@link android.hardware.Camera.Parameters#getSupportedPreviewFormats()}.</p> 171 */ 172 public static final int YUY2 = 0x14; 173 174 /** 175 * Compressed JPEG format. 176 * 177 * <p>This format is always supported as an output format for the 178 * {@link android.hardware.camera2} API, and as a picture format for the older 179 * {@link android.hardware.Camera} API</p> 180 */ 181 public static final int JPEG = 0x100; 182 183 /** 184 * <p>Multi-plane Android YUV 420 format</p> 185 * 186 * <p>This format is a generic YCbCr format, capable of describing any 4:2:0 187 * chroma-subsampled planar or semiplanar buffer (but not fully interleaved), 188 * with 8 bits per color sample.</p> 189 * 190 * <p>Images in this format are always represented by three separate buffers 191 * of data, one for each color plane. Additional information always 192 * accompanies the buffers, describing the row stride and the pixel stride 193 * for each plane.</p> 194 * 195 * <p>The order of planes in the array returned by 196 * {@link android.media.Image#getPlanes() Image#getPlanes()} is guaranteed such that 197 * plane #0 is always Y, plane #1 is always U (Cb), and plane #2 is always V (Cr).</p> 198 * 199 * <p>The Y-plane is guaranteed not to be interleaved with the U/V planes 200 * (in particular, pixel stride is always 1 in 201 * {@link android.media.Image.Plane#getPixelStride() yPlane.getPixelStride()}).</p> 202 * 203 * <p>The U/V planes are guaranteed to have the same row stride and pixel stride 204 * (in particular, 205 * {@link android.media.Image.Plane#getRowStride() uPlane.getRowStride()} 206 * == {@link android.media.Image.Plane#getRowStride() vPlane.getRowStride()} and 207 * {@link android.media.Image.Plane#getPixelStride() uPlane.getPixelStride()} 208 * == {@link android.media.Image.Plane#getPixelStride() vPlane.getPixelStride()}; 209 * ).</p> 210 * 211 * <p>For example, the {@link android.media.Image} object can provide data 212 * in this format from a {@link android.hardware.camera2.CameraDevice} 213 * through a {@link android.media.ImageReader} object.</p> 214 * 215 * @see android.media.Image 216 * @see android.media.ImageReader 217 * @see android.hardware.camera2.CameraDevice 218 */ 219 public static final int YUV_420_888 = 0x23; 220 221 /** 222 * <p>Multi-plane Android YUV 422 format</p> 223 * 224 * <p>This format is a generic YCbCr format, capable of describing any 4:2:2 225 * chroma-subsampled (planar, semiplanar or interleaved) format, 226 * with 8 bits per color sample.</p> 227 * 228 * <p>Images in this format are always represented by three separate buffers 229 * of data, one for each color plane. Additional information always 230 * accompanies the buffers, describing the row stride and the pixel stride 231 * for each plane.</p> 232 * 233 * <p>The order of planes in the array returned by 234 * {@link android.media.Image#getPlanes() Image#getPlanes()} is guaranteed such that 235 * plane #0 is always Y, plane #1 is always U (Cb), and plane #2 is always V (Cr).</p> 236 * 237 * <p>In contrast to the {@link #YUV_420_888} format, the Y-plane may have a pixel 238 * stride greater than 1 in 239 * {@link android.media.Image.Plane#getPixelStride() yPlane.getPixelStride()}.</p> 240 * 241 * <p>The U/V planes are guaranteed to have the same row stride and pixel stride 242 * (in particular, 243 * {@link android.media.Image.Plane#getRowStride() uPlane.getRowStride()} 244 * == {@link android.media.Image.Plane#getRowStride() vPlane.getRowStride()} and 245 * {@link android.media.Image.Plane#getPixelStride() uPlane.getPixelStride()} 246 * == {@link android.media.Image.Plane#getPixelStride() vPlane.getPixelStride()}; 247 * ).</p> 248 * 249 * <p>For example, the {@link android.media.Image} object can provide data 250 * in this format from a {@link android.media.MediaCodec} 251 * through {@link android.media.MediaCodec#getOutputImage} object.</p> 252 * 253 * @see android.media.Image 254 * @see android.media.MediaCodec 255 */ 256 public static final int YUV_422_888 = 0x27; 257 258 /** 259 * <p>Multi-plane Android YUV 444 format</p> 260 * 261 * <p>This format is a generic YCbCr format, capable of describing any 4:4:4 262 * (planar, semiplanar or interleaved) format, 263 * with 8 bits per color sample.</p> 264 * 265 * <p>Images in this format are always represented by three separate buffers 266 * of data, one for each color plane. Additional information always 267 * accompanies the buffers, describing the row stride and the pixel stride 268 * for each plane.</p> 269 * 270 * <p>The order of planes in the array returned by 271 * {@link android.media.Image#getPlanes() Image#getPlanes()} is guaranteed such that 272 * plane #0 is always Y, plane #1 is always U (Cb), and plane #2 is always V (Cr).</p> 273 * 274 * <p>In contrast to the {@link #YUV_420_888} format, the Y-plane may have a pixel 275 * stride greater than 1 in 276 * {@link android.media.Image.Plane#getPixelStride() yPlane.getPixelStride()}.</p> 277 * 278 * <p>The U/V planes are guaranteed to have the same row stride and pixel stride 279 * (in particular, 280 * {@link android.media.Image.Plane#getRowStride() uPlane.getRowStride()} 281 * == {@link android.media.Image.Plane#getRowStride() vPlane.getRowStride()} and 282 * {@link android.media.Image.Plane#getPixelStride() uPlane.getPixelStride()} 283 * == {@link android.media.Image.Plane#getPixelStride() vPlane.getPixelStride()}; 284 * ).</p> 285 * 286 * <p>For example, the {@link android.media.Image} object can provide data 287 * in this format from a {@link android.media.MediaCodec} 288 * through {@link android.media.MediaCodec#getOutputImage} object.</p> 289 * 290 * @see android.media.Image 291 * @see android.media.MediaCodec 292 */ 293 public static final int YUV_444_888 = 0x28; 294 295 /** 296 * <p>Multi-plane Android RGB format</p> 297 * 298 * <p>This format is a generic RGB format, capable of describing most RGB formats, 299 * with 8 bits per color sample.</p> 300 * 301 * <p>Images in this format are always represented by three separate buffers 302 * of data, one for each color plane. Additional information always 303 * accompanies the buffers, describing the row stride and the pixel stride 304 * for each plane.</p> 305 * 306 * <p>The order of planes in the array returned by 307 * {@link android.media.Image#getPlanes() Image#getPlanes()} is guaranteed such that 308 * plane #0 is always R (red), plane #1 is always G (green), and plane #2 is always B 309 * (blue).</p> 310 * 311 * <p>All three planes are guaranteed to have the same row strides and pixel strides.</p> 312 * 313 * <p>For example, the {@link android.media.Image} object can provide data 314 * in this format from a {@link android.media.MediaCodec} 315 * through {@link android.media.MediaCodec#getOutputImage} object.</p> 316 * 317 * @see android.media.Image 318 * @see android.media.MediaCodec 319 */ 320 public static final int FLEX_RGB_888 = 0x29; 321 322 /** 323 * <p>Multi-plane Android RGBA format</p> 324 * 325 * <p>This format is a generic RGBA format, capable of describing most RGBA formats, 326 * with 8 bits per color sample.</p> 327 * 328 * <p>Images in this format are always represented by four separate buffers 329 * of data, one for each color plane. Additional information always 330 * accompanies the buffers, describing the row stride and the pixel stride 331 * for each plane.</p> 332 * 333 * <p>The order of planes in the array returned by 334 * {@link android.media.Image#getPlanes() Image#getPlanes()} is guaranteed such that 335 * plane #0 is always R (red), plane #1 is always G (green), plane #2 is always B (blue), 336 * and plane #3 is always A (alpha). This format may represent pre-multiplied or 337 * non-premultiplied alpha.</p> 338 * 339 * <p>All four planes are guaranteed to have the same row strides and pixel strides.</p> 340 * 341 * <p>For example, the {@link android.media.Image} object can provide data 342 * in this format from a {@link android.media.MediaCodec} 343 * through {@link android.media.MediaCodec#getOutputImage} object.</p> 344 * 345 * @see android.media.Image 346 * @see android.media.MediaCodec 347 */ 348 public static final int FLEX_RGBA_8888 = 0x2A; 349 350 /** 351 * <p>General raw camera sensor image format, usually representing a 352 * single-channel Bayer-mosaic image. Each pixel color sample is stored with 353 * 16 bits of precision.</p> 354 * 355 * <p>The layout of the color mosaic, the maximum and minimum encoding 356 * values of the raw pixel data, the color space of the image, and all other 357 * needed information to interpret a raw sensor image must be queried from 358 * the {@link android.hardware.camera2.CameraDevice} which produced the 359 * image.</p> 360 */ 361 public static final int RAW_SENSOR = 0x20; 362 363 /** 364 * <p>Private raw camera sensor image format, a single channel image with 365 * implementation depedent pixel layout.</p> 366 * 367 * <p>RAW_PRIVATE is a format for unprocessed raw image buffers coming from an 368 * image sensor. The actual structure of buffers of this format is 369 * implementation-dependent.</p> 370 * 371 */ 372 public static final int RAW_PRIVATE = 0x24; 373 374 /** 375 * <p> 376 * Android 10-bit raw format 377 * </p> 378 * <p> 379 * This is a single-plane, 10-bit per pixel, densely packed (in each row), 380 * unprocessed format, usually representing raw Bayer-pattern images coming 381 * from an image sensor. 382 * </p> 383 * <p> 384 * In an image buffer with this format, starting from the first pixel of 385 * each row, each 4 consecutive pixels are packed into 5 bytes (40 bits). 386 * Each one of the first 4 bytes contains the top 8 bits of each pixel, The 387 * fifth byte contains the 2 least significant bits of the 4 pixels, the 388 * exact layout data for each 4 consecutive pixels is illustrated below 389 * ({@code Pi[j]} stands for the jth bit of the ith pixel): 390 * </p> 391 * <table> 392 * <thead> 393 * <tr> 394 * <th align="center"></th> 395 * <th align="center">bit 7</th> 396 * <th align="center">bit 6</th> 397 * <th align="center">bit 5</th> 398 * <th align="center">bit 4</th> 399 * <th align="center">bit 3</th> 400 * <th align="center">bit 2</th> 401 * <th align="center">bit 1</th> 402 * <th align="center">bit 0</th> 403 * </tr> 404 * </thead> <tbody> 405 * <tr> 406 * <td align="center">Byte 0:</td> 407 * <td align="center">P0[9]</td> 408 * <td align="center">P0[8]</td> 409 * <td align="center">P0[7]</td> 410 * <td align="center">P0[6]</td> 411 * <td align="center">P0[5]</td> 412 * <td align="center">P0[4]</td> 413 * <td align="center">P0[3]</td> 414 * <td align="center">P0[2]</td> 415 * </tr> 416 * <tr> 417 * <td align="center">Byte 1:</td> 418 * <td align="center">P1[9]</td> 419 * <td align="center">P1[8]</td> 420 * <td align="center">P1[7]</td> 421 * <td align="center">P1[6]</td> 422 * <td align="center">P1[5]</td> 423 * <td align="center">P1[4]</td> 424 * <td align="center">P1[3]</td> 425 * <td align="center">P1[2]</td> 426 * </tr> 427 * <tr> 428 * <td align="center">Byte 2:</td> 429 * <td align="center">P2[9]</td> 430 * <td align="center">P2[8]</td> 431 * <td align="center">P2[7]</td> 432 * <td align="center">P2[6]</td> 433 * <td align="center">P2[5]</td> 434 * <td align="center">P2[4]</td> 435 * <td align="center">P2[3]</td> 436 * <td align="center">P2[2]</td> 437 * </tr> 438 * <tr> 439 * <td align="center">Byte 3:</td> 440 * <td align="center">P3[9]</td> 441 * <td align="center">P3[8]</td> 442 * <td align="center">P3[7]</td> 443 * <td align="center">P3[6]</td> 444 * <td align="center">P3[5]</td> 445 * <td align="center">P3[4]</td> 446 * <td align="center">P3[3]</td> 447 * <td align="center">P3[2]</td> 448 * </tr> 449 * <tr> 450 * <td align="center">Byte 4:</td> 451 * <td align="center">P3[1]</td> 452 * <td align="center">P3[0]</td> 453 * <td align="center">P2[1]</td> 454 * <td align="center">P2[0]</td> 455 * <td align="center">P1[1]</td> 456 * <td align="center">P1[0]</td> 457 * <td align="center">P0[1]</td> 458 * <td align="center">P0[0]</td> 459 * </tr> 460 * </tbody> 461 * </table> 462 * <p> 463 * This format assumes 464 * <ul> 465 * <li>a width multiple of 4 pixels</li> 466 * <li>an even height</li> 467 * </ul> 468 * </p> 469 * 470 * <pre>size = row stride * height</pre> where the row stride is in <em>bytes</em>, 471 * not pixels. 472 * 473 * <p> 474 * Since this is a densely packed format, the pixel stride is always 0. The 475 * application must use the pixel data layout defined in above table to 476 * access each row data. When row stride is equal to {@code width * (10 / 8)}, there 477 * will be no padding bytes at the end of each row, the entire image data is 478 * densely packed. When stride is larger than {@code width * (10 / 8)}, padding 479 * bytes will be present at the end of each row. 480 * </p> 481 * <p> 482 * For example, the {@link android.media.Image} object can provide data in 483 * this format from a {@link android.hardware.camera2.CameraDevice} (if 484 * supported) through a {@link android.media.ImageReader} object. The 485 * {@link android.media.Image#getPlanes() Image#getPlanes()} will return a 486 * single plane containing the pixel data. The pixel stride is always 0 in 487 * {@link android.media.Image.Plane#getPixelStride()}, and the 488 * {@link android.media.Image.Plane#getRowStride()} describes the vertical 489 * neighboring pixel distance (in bytes) between adjacent rows. 490 * </p> 491 * 492 * @see android.media.Image 493 * @see android.media.ImageReader 494 * @see android.hardware.camera2.CameraDevice 495 */ 496 public static final int RAW10 = 0x25; 497 498 /** 499 * <p> 500 * Android 12-bit raw format 501 * </p> 502 * <p> 503 * This is a single-plane, 12-bit per pixel, densely packed (in each row), 504 * unprocessed format, usually representing raw Bayer-pattern images coming 505 * from an image sensor. 506 * </p> 507 * <p> 508 * In an image buffer with this format, starting from the first pixel of each 509 * row, each two consecutive pixels are packed into 3 bytes (24 bits). The first 510 * and second byte contains the top 8 bits of first and second pixel. The third 511 * byte contains the 4 least significant bits of the two pixels, the exact layout 512 * data for each two consecutive pixels is illustrated below (Pi[j] stands for 513 * the jth bit of the ith pixel): 514 * </p> 515 * <table> 516 * <thead> 517 * <tr> 518 * <th align="center"></th> 519 * <th align="center">bit 7</th> 520 * <th align="center">bit 6</th> 521 * <th align="center">bit 5</th> 522 * <th align="center">bit 4</th> 523 * <th align="center">bit 3</th> 524 * <th align="center">bit 2</th> 525 * <th align="center">bit 1</th> 526 * <th align="center">bit 0</th> 527 * </tr> 528 * </thead> <tbody> 529 * <tr> 530 * <td align="center">Byte 0:</td> 531 * <td align="center">P0[11]</td> 532 * <td align="center">P0[10]</td> 533 * <td align="center">P0[ 9]</td> 534 * <td align="center">P0[ 8]</td> 535 * <td align="center">P0[ 7]</td> 536 * <td align="center">P0[ 6]</td> 537 * <td align="center">P0[ 5]</td> 538 * <td align="center">P0[ 4]</td> 539 * </tr> 540 * <tr> 541 * <td align="center">Byte 1:</td> 542 * <td align="center">P1[11]</td> 543 * <td align="center">P1[10]</td> 544 * <td align="center">P1[ 9]</td> 545 * <td align="center">P1[ 8]</td> 546 * <td align="center">P1[ 7]</td> 547 * <td align="center">P1[ 6]</td> 548 * <td align="center">P1[ 5]</td> 549 * <td align="center">P1[ 4]</td> 550 * </tr> 551 * <tr> 552 * <td align="center">Byte 2:</td> 553 * <td align="center">P1[ 3]</td> 554 * <td align="center">P1[ 2]</td> 555 * <td align="center">P1[ 1]</td> 556 * <td align="center">P1[ 0]</td> 557 * <td align="center">P0[ 3]</td> 558 * <td align="center">P0[ 2]</td> 559 * <td align="center">P0[ 1]</td> 560 * <td align="center">P0[ 0]</td> 561 * </tr> 562 * </tbody> 563 * </table> 564 * <p> 565 * This format assumes 566 * <ul> 567 * <li>a width multiple of 4 pixels</li> 568 * <li>an even height</li> 569 * </ul> 570 * </p> 571 * 572 * <pre>size = row stride * height</pre> where the row stride is in <em>bytes</em>, 573 * not pixels. 574 * 575 * <p> 576 * Since this is a densely packed format, the pixel stride is always 0. The 577 * application must use the pixel data layout defined in above table to 578 * access each row data. When row stride is equal to {@code width * (12 / 8)}, there 579 * will be no padding bytes at the end of each row, the entire image data is 580 * densely packed. When stride is larger than {@code width * (12 / 8)}, padding 581 * bytes will be present at the end of each row. 582 * </p> 583 * <p> 584 * For example, the {@link android.media.Image} object can provide data in 585 * this format from a {@link android.hardware.camera2.CameraDevice} (if 586 * supported) through a {@link android.media.ImageReader} object. The 587 * {@link android.media.Image#getPlanes() Image#getPlanes()} will return a 588 * single plane containing the pixel data. The pixel stride is always 0 in 589 * {@link android.media.Image.Plane#getPixelStride()}, and the 590 * {@link android.media.Image.Plane#getRowStride()} describes the vertical 591 * neighboring pixel distance (in bytes) between adjacent rows. 592 * </p> 593 * 594 * @see android.media.Image 595 * @see android.media.ImageReader 596 * @see android.hardware.camera2.CameraDevice 597 */ 598 public static final int RAW12 = 0x26; 599 600 /** 601 * <p>Android dense depth image format.</p> 602 * 603 * <p>Each pixel is 16 bits, representing a depth ranging measurement from a depth camera or 604 * similar sensor. The 16-bit sample consists of a confidence value and the actual ranging 605 * measurement.</p> 606 * 607 * <p>The confidence value is an estimate of correctness for this sample. It is encoded in the 608 * 3 most significant bits of the sample, with a value of 0 representing 100% confidence, a 609 * value of 1 representing 0% confidence, a value of 2 representing 1/7, a value of 3 610 * representing 2/7, and so on.</p> 611 * 612 * <p>As an example, the following sample extracts the range and confidence from the first pixel 613 * of a DEPTH16-format {@link android.media.Image}, and converts the confidence to a 614 * floating-point value between 0 and 1.f inclusive, with 1.f representing maximum confidence: 615 * 616 * <pre> 617 * ShortBuffer shortDepthBuffer = img.getPlanes()[0].getBuffer().asShortBuffer(); 618 * short depthSample = shortDepthBuffer.get() 619 * short depthRange = (short) (depthSample & 0x1FFF); 620 * short depthConfidence = (short) ((depthSample >> 13) & 0x7); 621 * float depthPercentage = depthConfidence == 0 ? 1.f : (depthConfidence - 1) / 7.f; 622 * </pre> 623 * </p> 624 * 625 * <p>This format assumes 626 * <ul> 627 * <li>an even width</li> 628 * <li>an even height</li> 629 * <li>a horizontal stride multiple of 16 pixels</li> 630 * </ul> 631 * </p> 632 * 633 * <pre> y_size = stride * height </pre> 634 * 635 * When produced by a camera, the units for the range are millimeters. 636 */ 637 public static final int DEPTH16 = 0x44363159; 638 639 /** 640 * Android sparse depth point cloud format. 641 * 642 * <p>A variable-length list of 3D points plus a confidence value, with each point represented 643 * by four floats; first the X, Y, Z position coordinates, and then the confidence value.</p> 644 * 645 * <p>The number of points is {@code (size of the buffer in bytes) / 16}. 646 * 647 * <p>The coordinate system and units of the position values depend on the source of the point 648 * cloud data. The confidence value is between 0.f and 1.f, inclusive, with 0 representing 0% 649 * confidence and 1.f representing 100% confidence in the measured position values.</p> 650 * 651 * <p>As an example, the following code extracts the first depth point in a DEPTH_POINT_CLOUD 652 * format {@link android.media.Image}: 653 * <pre> 654 * FloatBuffer floatDepthBuffer = img.getPlanes()[0].getBuffer().asFloatBuffer(); 655 * float x = floatDepthBuffer.get(); 656 * float y = floatDepthBuffer.get(); 657 * float z = floatDepthBuffer.get(); 658 * float confidence = floatDepthBuffer.get(); 659 * </pre> 660 * 661 * For camera devices that support the 662 * {@link android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT DEPTH_OUTPUT} 663 * capability, DEPTH_POINT_CLOUD coordinates have units of meters, and the coordinate system is 664 * defined by the camera's pose transforms: 665 * {@link android.hardware.camera2.CameraCharacteristics#LENS_POSE_TRANSLATION} and 666 * {@link android.hardware.camera2.CameraCharacteristics#LENS_POSE_ROTATION}. That means the origin is 667 * the optical center of the camera device, and the positive Z axis points along the camera's optical axis, 668 * toward the scene. 669 */ 670 public static final int DEPTH_POINT_CLOUD = 0x101; 671 672 /** 673 * Unprocessed implementation-dependent raw 674 * depth measurements, opaque with 16 bit 675 * samples. 676 * 677 * @hide 678 */ 679 public static final int RAW_DEPTH = 0x1002; 680 681 /** 682 * Android private opaque image format. 683 * <p> 684 * The choices of the actual format and pixel data layout are entirely up to 685 * the device-specific and framework internal implementations, and may vary 686 * depending on use cases even for the same device. The buffers of this 687 * format can be produced by components like 688 * {@link android.media.ImageWriter ImageWriter} , and interpreted correctly 689 * by consumers like {@link android.hardware.camera2.CameraDevice 690 * CameraDevice} based on the device/framework private information. However, 691 * these buffers are not directly accessible to the application. 692 * </p> 693 * <p> 694 * When an {@link android.media.Image Image} of this format is obtained from 695 * an {@link android.media.ImageReader ImageReader} or 696 * {@link android.media.ImageWriter ImageWriter}, the 697 * {@link android.media.Image#getPlanes() getPlanes()} method will return an 698 * empty {@link android.media.Image.Plane Plane} array. 699 * </p> 700 * <p> 701 * If a buffer of this format is to be used as an OpenGL ES texture, the 702 * framework will assume that sampling the texture will always return an 703 * alpha value of 1.0 (i.e. the buffer contains only opaque pixel values). 704 * </p> 705 */ 706 public static final int PRIVATE = 0x22; 707 708 /** 709 * Use this function to retrieve the number of bits per pixel of an 710 * ImageFormat. 711 * 712 * @param format 713 * @return the number of bits per pixel of the given format or -1 if the 714 * format doesn't exist or is not supported. 715 */ 716 public static int getBitsPerPixel(int format) { 717 switch (format) { 718 case RGB_565: 719 return 16; 720 case NV16: 721 return 16; 722 case YUY2: 723 return 16; 724 case YV12: 725 return 12; 726 case Y8: 727 return 8; 728 case Y16: 729 case DEPTH16: 730 return 16; 731 case NV21: 732 return 12; 733 case YUV_420_888: 734 return 12; 735 case YUV_422_888: 736 return 16; 737 case YUV_444_888: 738 return 24; 739 case FLEX_RGB_888: 740 return 24; 741 case FLEX_RGBA_8888: 742 return 32; 743 case RAW_DEPTH: 744 case RAW_SENSOR: 745 return 16; 746 case RAW10: 747 return 10; 748 case RAW12: 749 return 12; 750 } 751 return -1; 752 } 753 754 /** 755 * Determine whether or not this is a public-visible {@code format}. 756 * 757 * <p>In particular, {@code @hide} formats will return {@code false}.</p> 758 * 759 * <p>Any other formats (including UNKNOWN) will return {@code false}.</p> 760 * 761 * @param format an integer format 762 * @return a boolean 763 * 764 * @hide 765 */ 766 public static boolean isPublicFormat(int format) { 767 switch (format) { 768 case RGB_565: 769 case NV16: 770 case YUY2: 771 case YV12: 772 case JPEG: 773 case NV21: 774 case YUV_420_888: 775 case YUV_422_888: 776 case YUV_444_888: 777 case FLEX_RGB_888: 778 case FLEX_RGBA_8888: 779 case RAW_SENSOR: 780 case RAW_PRIVATE: 781 case RAW10: 782 case RAW12: 783 case DEPTH16: 784 case DEPTH_POINT_CLOUD: 785 case PRIVATE: 786 case RAW_DEPTH: 787 return true; 788 } 789 790 return false; 791 } 792 } 793
