The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | // |
| 2 | // Copyright 2006 The Android Open Source Project |
| 3 | // |
| 4 | // Build resource files from raw assets. |
| 5 | // |
| 6 | |
| 7 | #define PNG_INTERNAL |
| 8 | |
| 9 | #include "Images.h" |
| 10 | |
| 11 | #include <utils/ResourceTypes.h> |
| 12 | #include <utils/ByteOrder.h> |
| 13 | |
| 14 | #include <png.h> |
| 15 | |
| 16 | #define NOISY(x) //x |
| 17 | |
| 18 | static void |
| 19 | png_write_aapt_file(png_structp png_ptr, png_bytep data, png_size_t length) |
| 20 | { |
| 21 | status_t err = ((AaptFile*)png_ptr->io_ptr)->writeData(data, length); |
| 22 | if (err != NO_ERROR) { |
| 23 | png_error(png_ptr, "Write Error"); |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | |
| 28 | static void |
| 29 | png_flush_aapt_file(png_structp png_ptr) |
| 30 | { |
| 31 | } |
| 32 | |
| 33 | // This holds an image as 8bpp RGBA. |
| 34 | struct image_info |
| 35 | { |
| 36 | image_info() : rows(NULL), is9Patch(false), allocRows(NULL) { } |
| 37 | ~image_info() { |
| 38 | if (rows && rows != allocRows) { |
| 39 | free(rows); |
| 40 | } |
| 41 | if (allocRows) { |
| 42 | for (int i=0; i<(int)allocHeight; i++) { |
| 43 | free(allocRows[i]); |
| 44 | } |
| 45 | free(allocRows); |
| 46 | } |
Marco Nelissen | 6a1fade | 2009-04-20 16:16:01 -0700 | [diff] [blame] | 47 | free(info9Patch.xDivs); |
| 48 | free(info9Patch.yDivs); |
| 49 | free(info9Patch.colors); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | png_uint_32 width; |
| 53 | png_uint_32 height; |
| 54 | png_bytepp rows; |
| 55 | |
| 56 | // 9-patch info. |
| 57 | bool is9Patch; |
| 58 | Res_png_9patch info9Patch; |
| 59 | |
| 60 | png_uint_32 allocHeight; |
| 61 | png_bytepp allocRows; |
| 62 | }; |
| 63 | |
| 64 | static void read_png(const char* imageName, |
| 65 | png_structp read_ptr, png_infop read_info, |
| 66 | image_info* outImageInfo) |
| 67 | { |
| 68 | int color_type; |
| 69 | int bit_depth, interlace_type, compression_type; |
| 70 | int i; |
| 71 | |
| 72 | png_read_info(read_ptr, read_info); |
| 73 | |
| 74 | png_get_IHDR(read_ptr, read_info, &outImageInfo->width, |
| 75 | &outImageInfo->height, &bit_depth, &color_type, |
| 76 | &interlace_type, &compression_type, NULL); |
| 77 | |
| 78 | //printf("Image %s:\n", imageName); |
| 79 | //printf("color_type=%d, bit_depth=%d, interlace_type=%d, compression_type=%d\n", |
| 80 | // color_type, bit_depth, interlace_type, compression_type); |
| 81 | |
| 82 | if (color_type == PNG_COLOR_TYPE_PALETTE) |
| 83 | png_set_palette_to_rgb(read_ptr); |
| 84 | |
| 85 | if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) |
| 86 | png_set_gray_1_2_4_to_8(read_ptr); |
| 87 | |
| 88 | if (png_get_valid(read_ptr, read_info, PNG_INFO_tRNS)) { |
| 89 | //printf("Has PNG_INFO_tRNS!\n"); |
| 90 | png_set_tRNS_to_alpha(read_ptr); |
| 91 | } |
| 92 | |
| 93 | if (bit_depth == 16) |
| 94 | png_set_strip_16(read_ptr); |
| 95 | |
| 96 | if ((color_type&PNG_COLOR_MASK_ALPHA) == 0) |
| 97 | png_set_add_alpha(read_ptr, 0xFF, PNG_FILLER_AFTER); |
| 98 | |
| 99 | if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) |
| 100 | png_set_gray_to_rgb(read_ptr); |
| 101 | |
| 102 | png_read_update_info(read_ptr, read_info); |
| 103 | |
| 104 | outImageInfo->rows = (png_bytepp)malloc( |
| 105 | outImageInfo->height * png_sizeof(png_bytep)); |
| 106 | outImageInfo->allocHeight = outImageInfo->height; |
| 107 | outImageInfo->allocRows = outImageInfo->rows; |
| 108 | |
| 109 | png_set_rows(read_ptr, read_info, outImageInfo->rows); |
| 110 | |
| 111 | for (i = 0; i < (int)outImageInfo->height; i++) |
| 112 | { |
| 113 | outImageInfo->rows[i] = (png_bytep) |
| 114 | malloc(png_get_rowbytes(read_ptr, read_info)); |
| 115 | } |
| 116 | |
| 117 | png_read_image(read_ptr, outImageInfo->rows); |
| 118 | |
| 119 | png_read_end(read_ptr, read_info); |
| 120 | |
| 121 | NOISY(printf("Image %s: w=%d, h=%d, d=%d, colors=%d, inter=%d, comp=%d\n", |
| 122 | imageName, |
| 123 | (int)outImageInfo->width, (int)outImageInfo->height, |
| 124 | bit_depth, color_type, |
| 125 | interlace_type, compression_type)); |
| 126 | |
| 127 | png_get_IHDR(read_ptr, read_info, &outImageInfo->width, |
| 128 | &outImageInfo->height, &bit_depth, &color_type, |
| 129 | &interlace_type, &compression_type, NULL); |
| 130 | } |
| 131 | |
| 132 | static bool is_tick(png_bytep p, bool transparent, const char** outError) |
| 133 | { |
| 134 | if (transparent) { |
| 135 | if (p[3] == 0) { |
| 136 | return false; |
| 137 | } |
| 138 | if (p[3] != 0xff) { |
| 139 | *outError = "Frame pixels must be either solid or transparent (not intermediate alphas)"; |
| 140 | return false; |
| 141 | } |
| 142 | if (p[0] != 0 || p[1] != 0 || p[2] != 0) { |
| 143 | *outError = "Ticks in transparent frame must be black"; |
| 144 | } |
| 145 | return true; |
| 146 | } |
| 147 | |
| 148 | if (p[3] != 0xFF) { |
| 149 | *outError = "White frame must be a solid color (no alpha)"; |
| 150 | } |
| 151 | if (p[0] == 0xFF && p[1] == 0xFF && p[2] == 0xFF) { |
| 152 | return false; |
| 153 | } |
| 154 | if (p[0] != 0 || p[1] != 0 || p[2] != 0) { |
| 155 | *outError = "Ticks in white frame must be black"; |
| 156 | return false; |
| 157 | } |
| 158 | return true; |
| 159 | } |
| 160 | |
| 161 | enum { |
| 162 | TICK_START, |
| 163 | TICK_INSIDE_1, |
| 164 | TICK_OUTSIDE_1 |
| 165 | }; |
| 166 | |
| 167 | static status_t get_horizontal_ticks( |
| 168 | png_bytep row, int width, bool transparent, bool required, |
| 169 | int32_t* outLeft, int32_t* outRight, const char** outError, |
| 170 | uint8_t* outDivs, bool multipleAllowed) |
| 171 | { |
| 172 | int i; |
| 173 | *outLeft = *outRight = -1; |
| 174 | int state = TICK_START; |
| 175 | bool found = false; |
| 176 | |
| 177 | for (i=1; i<width-1; i++) { |
| 178 | if (is_tick(row+i*4, transparent, outError)) { |
| 179 | if (state == TICK_START || |
| 180 | (state == TICK_OUTSIDE_1 && multipleAllowed)) { |
| 181 | *outLeft = i-1; |
| 182 | *outRight = width-2; |
| 183 | found = true; |
| 184 | if (outDivs != NULL) { |
| 185 | *outDivs += 2; |
| 186 | } |
| 187 | state = TICK_INSIDE_1; |
| 188 | } else if (state == TICK_OUTSIDE_1) { |
| 189 | *outError = "Can't have more than one marked region along edge"; |
| 190 | *outLeft = i; |
| 191 | return UNKNOWN_ERROR; |
| 192 | } |
| 193 | } else if (*outError == NULL) { |
| 194 | if (state == TICK_INSIDE_1) { |
| 195 | // We're done with this div. Move on to the next. |
| 196 | *outRight = i-1; |
| 197 | outRight += 2; |
| 198 | outLeft += 2; |
| 199 | state = TICK_OUTSIDE_1; |
| 200 | } |
| 201 | } else { |
| 202 | *outLeft = i; |
| 203 | return UNKNOWN_ERROR; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | if (required && !found) { |
| 208 | *outError = "No marked region found along edge"; |
| 209 | *outLeft = -1; |
| 210 | return UNKNOWN_ERROR; |
| 211 | } |
| 212 | |
| 213 | return NO_ERROR; |
| 214 | } |
| 215 | |
| 216 | static status_t get_vertical_ticks( |
| 217 | png_bytepp rows, int offset, int height, bool transparent, bool required, |
| 218 | int32_t* outTop, int32_t* outBottom, const char** outError, |
| 219 | uint8_t* outDivs, bool multipleAllowed) |
| 220 | { |
| 221 | int i; |
| 222 | *outTop = *outBottom = -1; |
| 223 | int state = TICK_START; |
| 224 | bool found = false; |
| 225 | |
| 226 | for (i=1; i<height-1; i++) { |
| 227 | if (is_tick(rows[i]+offset, transparent, outError)) { |
| 228 | if (state == TICK_START || |
| 229 | (state == TICK_OUTSIDE_1 && multipleAllowed)) { |
| 230 | *outTop = i-1; |
| 231 | *outBottom = height-2; |
| 232 | found = true; |
| 233 | if (outDivs != NULL) { |
| 234 | *outDivs += 2; |
| 235 | } |
| 236 | state = TICK_INSIDE_1; |
| 237 | } else if (state == TICK_OUTSIDE_1) { |
| 238 | *outError = "Can't have more than one marked region along edge"; |
| 239 | *outTop = i; |
| 240 | return UNKNOWN_ERROR; |
| 241 | } |
| 242 | } else if (*outError == NULL) { |
| 243 | if (state == TICK_INSIDE_1) { |
| 244 | // We're done with this div. Move on to the next. |
| 245 | *outBottom = i-1; |
| 246 | outTop += 2; |
| 247 | outBottom += 2; |
| 248 | state = TICK_OUTSIDE_1; |
| 249 | } |
| 250 | } else { |
| 251 | *outTop = i; |
| 252 | return UNKNOWN_ERROR; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | if (required && !found) { |
| 257 | *outError = "No marked region found along edge"; |
| 258 | *outTop = -1; |
| 259 | return UNKNOWN_ERROR; |
| 260 | } |
| 261 | |
| 262 | return NO_ERROR; |
| 263 | } |
| 264 | |
| 265 | static uint32_t get_color( |
| 266 | png_bytepp rows, int left, int top, int right, int bottom) |
| 267 | { |
| 268 | png_bytep color = rows[top] + left*4; |
| 269 | |
| 270 | if (left > right || top > bottom) { |
| 271 | return Res_png_9patch::TRANSPARENT_COLOR; |
| 272 | } |
| 273 | |
| 274 | while (top <= bottom) { |
| 275 | for (int i = left; i <= right; i++) { |
| 276 | png_bytep p = rows[top]+i*4; |
| 277 | if (color[3] == 0) { |
| 278 | if (p[3] != 0) { |
| 279 | return Res_png_9patch::NO_COLOR; |
| 280 | } |
| 281 | } else if (p[0] != color[0] || p[1] != color[1] |
| 282 | || p[2] != color[2] || p[3] != color[3]) { |
| 283 | return Res_png_9patch::NO_COLOR; |
| 284 | } |
| 285 | } |
| 286 | top++; |
| 287 | } |
| 288 | |
| 289 | if (color[3] == 0) { |
| 290 | return Res_png_9patch::TRANSPARENT_COLOR; |
| 291 | } |
| 292 | return (color[3]<<24) | (color[0]<<16) | (color[1]<<8) | color[2]; |
| 293 | } |
| 294 | |
| 295 | static void select_patch( |
| 296 | int which, int front, int back, int size, int* start, int* end) |
| 297 | { |
| 298 | switch (which) { |
| 299 | case 0: |
| 300 | *start = 0; |
| 301 | *end = front-1; |
| 302 | break; |
| 303 | case 1: |
| 304 | *start = front; |
| 305 | *end = back-1; |
| 306 | break; |
| 307 | case 2: |
| 308 | *start = back; |
| 309 | *end = size-1; |
| 310 | break; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | static uint32_t get_color(image_info* image, int hpatch, int vpatch) |
| 315 | { |
| 316 | int left, right, top, bottom; |
| 317 | select_patch( |
| 318 | hpatch, image->info9Patch.xDivs[0], image->info9Patch.xDivs[1], |
| 319 | image->width, &left, &right); |
| 320 | select_patch( |
| 321 | vpatch, image->info9Patch.yDivs[0], image->info9Patch.yDivs[1], |
| 322 | image->height, &top, &bottom); |
| 323 | //printf("Selecting h=%d v=%d: (%d,%d)-(%d,%d)\n", |
| 324 | // hpatch, vpatch, left, top, right, bottom); |
| 325 | const uint32_t c = get_color(image->rows, left, top, right, bottom); |
| 326 | NOISY(printf("Color in (%d,%d)-(%d,%d): #%08x\n", left, top, right, bottom, c)); |
| 327 | return c; |
| 328 | } |
| 329 | |
| 330 | static status_t do_9patch(const char* imageName, image_info* image) |
| 331 | { |
| 332 | image->is9Patch = true; |
| 333 | |
| 334 | int W = image->width; |
| 335 | int H = image->height; |
| 336 | int i, j; |
| 337 | |
The Android Open Source Project | 4df2423 | 2009-03-05 14:34:35 -0800 | [diff] [blame] | 338 | int maxSizeXDivs = W * sizeof(int32_t); |
| 339 | int maxSizeYDivs = H * sizeof(int32_t); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 340 | int32_t* xDivs = (int32_t*) malloc(maxSizeXDivs); |
| 341 | int32_t* yDivs = (int32_t*) malloc(maxSizeYDivs); |
| 342 | uint8_t numXDivs = 0; |
| 343 | uint8_t numYDivs = 0; |
| 344 | int8_t numColors; |
| 345 | int numRows; |
| 346 | int numCols; |
| 347 | int top; |
| 348 | int left; |
| 349 | int right; |
| 350 | int bottom; |
| 351 | memset(xDivs, -1, maxSizeXDivs); |
| 352 | memset(yDivs, -1, maxSizeYDivs); |
| 353 | image->info9Patch.paddingLeft = image->info9Patch.paddingRight = |
| 354 | image->info9Patch.paddingTop = image->info9Patch.paddingBottom = -1; |
| 355 | |
| 356 | png_bytep p = image->rows[0]; |
| 357 | bool transparent = p[3] == 0; |
| 358 | bool hasColor = false; |
| 359 | |
| 360 | const char* errorMsg = NULL; |
| 361 | int errorPixel = -1; |
Kenny Root | 9e652a6 | 2010-03-12 14:12:14 -0800 | [diff] [blame] | 362 | const char* errorEdge = NULL; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 363 | |
| 364 | int colorIndex = 0; |
| 365 | |
| 366 | // Validate size... |
| 367 | if (W < 3 || H < 3) { |
| 368 | errorMsg = "Image must be at least 3x3 (1x1 without frame) pixels"; |
| 369 | goto getout; |
| 370 | } |
| 371 | |
| 372 | // Validate frame... |
| 373 | if (!transparent && |
| 374 | (p[0] != 0xFF || p[1] != 0xFF || p[2] != 0xFF || p[3] != 0xFF)) { |
| 375 | errorMsg = "Must have one-pixel frame that is either transparent or white"; |
| 376 | goto getout; |
| 377 | } |
| 378 | |
| 379 | // Find left and right of sizing areas... |
| 380 | if (get_horizontal_ticks(p, W, transparent, true, &xDivs[0], |
| 381 | &xDivs[1], &errorMsg, &numXDivs, true) != NO_ERROR) { |
| 382 | errorPixel = xDivs[0]; |
| 383 | errorEdge = "top"; |
| 384 | goto getout; |
| 385 | } |
| 386 | |
| 387 | // Find top and bottom of sizing areas... |
| 388 | if (get_vertical_ticks(image->rows, 0, H, transparent, true, &yDivs[0], |
| 389 | &yDivs[1], &errorMsg, &numYDivs, true) != NO_ERROR) { |
| 390 | errorPixel = yDivs[0]; |
| 391 | errorEdge = "left"; |
| 392 | goto getout; |
| 393 | } |
| 394 | |
| 395 | // Find left and right of padding area... |
| 396 | if (get_horizontal_ticks(image->rows[H-1], W, transparent, false, &image->info9Patch.paddingLeft, |
| 397 | &image->info9Patch.paddingRight, &errorMsg, NULL, false) != NO_ERROR) { |
| 398 | errorPixel = image->info9Patch.paddingLeft; |
| 399 | errorEdge = "bottom"; |
| 400 | goto getout; |
| 401 | } |
| 402 | |
| 403 | // Find top and bottom of padding area... |
| 404 | if (get_vertical_ticks(image->rows, (W-1)*4, H, transparent, false, &image->info9Patch.paddingTop, |
| 405 | &image->info9Patch.paddingBottom, &errorMsg, NULL, false) != NO_ERROR) { |
| 406 | errorPixel = image->info9Patch.paddingTop; |
| 407 | errorEdge = "right"; |
| 408 | goto getout; |
| 409 | } |
| 410 | |
| 411 | // Copy patch data into image |
| 412 | image->info9Patch.numXDivs = numXDivs; |
| 413 | image->info9Patch.numYDivs = numYDivs; |
| 414 | image->info9Patch.xDivs = xDivs; |
| 415 | image->info9Patch.yDivs = yDivs; |
| 416 | |
| 417 | // If padding is not yet specified, take values from size. |
| 418 | if (image->info9Patch.paddingLeft < 0) { |
| 419 | image->info9Patch.paddingLeft = xDivs[0]; |
| 420 | image->info9Patch.paddingRight = W - 2 - xDivs[1]; |
| 421 | } else { |
| 422 | // Adjust value to be correct! |
| 423 | image->info9Patch.paddingRight = W - 2 - image->info9Patch.paddingRight; |
| 424 | } |
| 425 | if (image->info9Patch.paddingTop < 0) { |
| 426 | image->info9Patch.paddingTop = yDivs[0]; |
| 427 | image->info9Patch.paddingBottom = H - 2 - yDivs[1]; |
| 428 | } else { |
| 429 | // Adjust value to be correct! |
| 430 | image->info9Patch.paddingBottom = H - 2 - image->info9Patch.paddingBottom; |
| 431 | } |
| 432 | |
| 433 | NOISY(printf("Size ticks for %s: x0=%d, x1=%d, y0=%d, y1=%d\n", imageName, |
| 434 | image->info9Patch.xDivs[0], image->info9Patch.xDivs[1], |
| 435 | image->info9Patch.yDivs[0], image->info9Patch.yDivs[1])); |
| 436 | NOISY(printf("padding ticks for %s: l=%d, r=%d, t=%d, b=%d\n", imageName, |
| 437 | image->info9Patch.paddingLeft, image->info9Patch.paddingRight, |
| 438 | image->info9Patch.paddingTop, image->info9Patch.paddingBottom)); |
| 439 | |
| 440 | // Remove frame from image. |
| 441 | image->rows = (png_bytepp)malloc((H-2) * png_sizeof(png_bytep)); |
| 442 | for (i=0; i<(H-2); i++) { |
| 443 | image->rows[i] = image->allocRows[i+1]; |
| 444 | memmove(image->rows[i], image->rows[i]+4, (W-2)*4); |
| 445 | } |
| 446 | image->width -= 2; |
| 447 | W = image->width; |
| 448 | image->height -= 2; |
| 449 | H = image->height; |
| 450 | |
| 451 | // Figure out the number of rows and columns in the N-patch |
| 452 | numCols = numXDivs + 1; |
| 453 | if (xDivs[0] == 0) { // Column 1 is strechable |
| 454 | numCols--; |
| 455 | } |
| 456 | if (xDivs[numXDivs - 1] == W) { |
| 457 | numCols--; |
| 458 | } |
| 459 | numRows = numYDivs + 1; |
| 460 | if (yDivs[0] == 0) { // Row 1 is strechable |
| 461 | numRows--; |
| 462 | } |
| 463 | if (yDivs[numYDivs - 1] == H) { |
| 464 | numRows--; |
| 465 | } |
Kenny Root | 9e652a6 | 2010-03-12 14:12:14 -0800 | [diff] [blame] | 466 | |
| 467 | // Make sure the amount of rows and columns will fit in the number of |
| 468 | // colors we can use in the 9-patch format. |
| 469 | if (numRows * numCols > 0x7F) { |
| 470 | errorMsg = "Too many rows and columns in 9-patch perimeter"; |
| 471 | goto getout; |
| 472 | } |
| 473 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 474 | numColors = numRows * numCols; |
| 475 | image->info9Patch.numColors = numColors; |
| 476 | image->info9Patch.colors = (uint32_t*)malloc(numColors * sizeof(uint32_t)); |
| 477 | |
| 478 | // Fill in color information for each patch. |
| 479 | |
| 480 | uint32_t c; |
| 481 | top = 0; |
| 482 | |
| 483 | // The first row always starts with the top being at y=0 and the bottom |
| 484 | // being either yDivs[1] (if yDivs[0]=0) of yDivs[0]. In the former case |
| 485 | // the first row is stretchable along the Y axis, otherwise it is fixed. |
| 486 | // The last row always ends with the bottom being bitmap.height and the top |
| 487 | // being either yDivs[numYDivs-2] (if yDivs[numYDivs-1]=bitmap.height) or |
| 488 | // yDivs[numYDivs-1]. In the former case the last row is stretchable along |
| 489 | // the Y axis, otherwise it is fixed. |
| 490 | // |
| 491 | // The first and last columns are similarly treated with respect to the X |
| 492 | // axis. |
| 493 | // |
| 494 | // The above is to help explain some of the special casing that goes on the |
| 495 | // code below. |
| 496 | |
| 497 | // The initial yDiv and whether the first row is considered stretchable or |
| 498 | // not depends on whether yDiv[0] was zero or not. |
| 499 | for (j = (yDivs[0] == 0 ? 1 : 0); |
| 500 | j <= numYDivs && top < H; |
| 501 | j++) { |
| 502 | if (j == numYDivs) { |
| 503 | bottom = H; |
| 504 | } else { |
| 505 | bottom = yDivs[j]; |
| 506 | } |
| 507 | left = 0; |
| 508 | // The initial xDiv and whether the first column is considered |
| 509 | // stretchable or not depends on whether xDiv[0] was zero or not. |
| 510 | for (i = xDivs[0] == 0 ? 1 : 0; |
| 511 | i <= numXDivs && left < W; |
| 512 | i++) { |
| 513 | if (i == numXDivs) { |
| 514 | right = W; |
| 515 | } else { |
| 516 | right = xDivs[i]; |
| 517 | } |
| 518 | c = get_color(image->rows, left, top, right - 1, bottom - 1); |
| 519 | image->info9Patch.colors[colorIndex++] = c; |
| 520 | NOISY(if (c != Res_png_9patch::NO_COLOR) hasColor = true); |
| 521 | left = right; |
| 522 | } |
| 523 | top = bottom; |
| 524 | } |
| 525 | |
| 526 | assert(colorIndex == numColors); |
| 527 | |
| 528 | for (i=0; i<numColors; i++) { |
| 529 | if (hasColor) { |
| 530 | if (i == 0) printf("Colors in %s:\n ", imageName); |
| 531 | printf(" #%08x", image->info9Patch.colors[i]); |
| 532 | if (i == numColors - 1) printf("\n"); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | image->is9Patch = true; |
| 537 | image->info9Patch.deviceToFile(); |
| 538 | |
| 539 | getout: |
| 540 | if (errorMsg) { |
| 541 | fprintf(stderr, |
| 542 | "ERROR: 9-patch image %s malformed.\n" |
| 543 | " %s.\n", imageName, errorMsg); |
Kenny Root | 9e652a6 | 2010-03-12 14:12:14 -0800 | [diff] [blame] | 544 | if (errorEdge != NULL) { |
| 545 | if (errorPixel >= 0) { |
| 546 | fprintf(stderr, |
| 547 | " Found at pixel #%d along %s edge.\n", errorPixel, errorEdge); |
| 548 | } else { |
| 549 | fprintf(stderr, |
| 550 | " Found along %s edge.\n", errorEdge); |
| 551 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 552 | } |
| 553 | return UNKNOWN_ERROR; |
| 554 | } |
| 555 | return NO_ERROR; |
| 556 | } |
| 557 | |
| 558 | static void checkNinePatchSerialization(Res_png_9patch* inPatch, void * data) |
| 559 | { |
| 560 | if (sizeof(void*) != sizeof(int32_t)) { |
| 561 | // can't deserialize on a non-32 bit system |
| 562 | return; |
| 563 | } |
| 564 | size_t patchSize = inPatch->serializedSize(); |
| 565 | void * newData = malloc(patchSize); |
| 566 | memcpy(newData, data, patchSize); |
| 567 | Res_png_9patch* outPatch = inPatch->deserialize(newData); |
| 568 | // deserialization is done in place, so outPatch == newData |
| 569 | assert(outPatch == newData); |
| 570 | assert(outPatch->numXDivs == inPatch->numXDivs); |
| 571 | assert(outPatch->numYDivs == inPatch->numYDivs); |
| 572 | assert(outPatch->paddingLeft == inPatch->paddingLeft); |
| 573 | assert(outPatch->paddingRight == inPatch->paddingRight); |
| 574 | assert(outPatch->paddingTop == inPatch->paddingTop); |
| 575 | assert(outPatch->paddingBottom == inPatch->paddingBottom); |
| 576 | for (int i = 0; i < outPatch->numXDivs; i++) { |
| 577 | assert(outPatch->xDivs[i] == inPatch->xDivs[i]); |
| 578 | } |
| 579 | for (int i = 0; i < outPatch->numYDivs; i++) { |
| 580 | assert(outPatch->yDivs[i] == inPatch->yDivs[i]); |
| 581 | } |
| 582 | for (int i = 0; i < outPatch->numColors; i++) { |
| 583 | assert(outPatch->colors[i] == inPatch->colors[i]); |
| 584 | } |
| 585 | free(newData); |
| 586 | } |
| 587 | |
| 588 | static bool patch_equals(Res_png_9patch& patch1, Res_png_9patch& patch2) { |
| 589 | if (!(patch1.numXDivs == patch2.numXDivs && |
| 590 | patch1.numYDivs == patch2.numYDivs && |
| 591 | patch1.numColors == patch2.numColors && |
| 592 | patch1.paddingLeft == patch2.paddingLeft && |
| 593 | patch1.paddingRight == patch2.paddingRight && |
| 594 | patch1.paddingTop == patch2.paddingTop && |
| 595 | patch1.paddingBottom == patch2.paddingBottom)) { |
| 596 | return false; |
| 597 | } |
| 598 | for (int i = 0; i < patch1.numColors; i++) { |
| 599 | if (patch1.colors[i] != patch2.colors[i]) { |
| 600 | return false; |
| 601 | } |
| 602 | } |
| 603 | for (int i = 0; i < patch1.numXDivs; i++) { |
| 604 | if (patch1.xDivs[i] != patch2.xDivs[i]) { |
| 605 | return false; |
| 606 | } |
| 607 | } |
| 608 | for (int i = 0; i < patch1.numYDivs; i++) { |
| 609 | if (patch1.yDivs[i] != patch2.yDivs[i]) { |
| 610 | return false; |
| 611 | } |
| 612 | } |
| 613 | return true; |
| 614 | } |
| 615 | |
| 616 | static void dump_image(int w, int h, png_bytepp rows, int color_type) |
| 617 | { |
| 618 | int i, j, rr, gg, bb, aa; |
| 619 | |
| 620 | int bpp; |
| 621 | if (color_type == PNG_COLOR_TYPE_PALETTE || color_type == PNG_COLOR_TYPE_GRAY) { |
| 622 | bpp = 1; |
| 623 | } else if (color_type == PNG_COLOR_TYPE_GRAY_ALPHA) { |
| 624 | bpp = 2; |
| 625 | } else if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA) { |
Kenny Root | 9e652a6 | 2010-03-12 14:12:14 -0800 | [diff] [blame] | 626 | // We use a padding byte even when there is no alpha |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 627 | bpp = 4; |
| 628 | } else { |
| 629 | printf("Unknown color type %d.\n", color_type); |
| 630 | } |
| 631 | |
| 632 | for (j = 0; j < h; j++) { |
| 633 | png_bytep row = rows[j]; |
| 634 | for (i = 0; i < w; i++) { |
| 635 | rr = row[0]; |
| 636 | gg = row[1]; |
| 637 | bb = row[2]; |
| 638 | aa = row[3]; |
| 639 | row += bpp; |
| 640 | |
| 641 | if (i == 0) { |
| 642 | printf("Row %d:", j); |
| 643 | } |
| 644 | switch (bpp) { |
| 645 | case 1: |
| 646 | printf(" (%d)", rr); |
| 647 | break; |
| 648 | case 2: |
| 649 | printf(" (%d %d", rr, gg); |
| 650 | break; |
| 651 | case 3: |
| 652 | printf(" (%d %d %d)", rr, gg, bb); |
| 653 | break; |
| 654 | case 4: |
| 655 | printf(" (%d %d %d %d)", rr, gg, bb, aa); |
| 656 | break; |
| 657 | } |
| 658 | if (i == (w - 1)) { |
| 659 | NOISY(printf("\n")); |
| 660 | } |
| 661 | } |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | #define MAX(a,b) ((a)>(b)?(a):(b)) |
| 666 | #define ABS(a) ((a)<0?-(a):(a)) |
| 667 | |
| 668 | static void analyze_image(const char *imageName, image_info &imageInfo, int grayscaleTolerance, |
| 669 | png_colorp rgbPalette, png_bytep alphaPalette, |
| 670 | int *paletteEntries, bool *hasTransparency, int *colorType, |
| 671 | png_bytepp outRows) |
| 672 | { |
| 673 | int w = imageInfo.width; |
| 674 | int h = imageInfo.height; |
| 675 | int i, j, rr, gg, bb, aa, idx; |
| 676 | uint32_t colors[256], col; |
| 677 | int num_colors = 0; |
| 678 | int maxGrayDeviation = 0; |
| 679 | |
| 680 | bool isOpaque = true; |
| 681 | bool isPalette = true; |
| 682 | bool isGrayscale = true; |
| 683 | |
| 684 | // Scan the entire image and determine if: |
| 685 | // 1. Every pixel has R == G == B (grayscale) |
| 686 | // 2. Every pixel has A == 255 (opaque) |
| 687 | // 3. There are no more than 256 distinct RGBA colors |
| 688 | |
| 689 | // NOISY(printf("Initial image data:\n")); |
| 690 | // dump_image(w, h, imageInfo.rows, PNG_COLOR_TYPE_RGB_ALPHA); |
| 691 | |
| 692 | for (j = 0; j < h; j++) { |
| 693 | png_bytep row = imageInfo.rows[j]; |
| 694 | png_bytep out = outRows[j]; |
| 695 | for (i = 0; i < w; i++) { |
| 696 | rr = *row++; |
| 697 | gg = *row++; |
| 698 | bb = *row++; |
| 699 | aa = *row++; |
| 700 | |
| 701 | int odev = maxGrayDeviation; |
| 702 | maxGrayDeviation = MAX(ABS(rr - gg), maxGrayDeviation); |
| 703 | maxGrayDeviation = MAX(ABS(gg - bb), maxGrayDeviation); |
| 704 | maxGrayDeviation = MAX(ABS(bb - rr), maxGrayDeviation); |
| 705 | if (maxGrayDeviation > odev) { |
| 706 | NOISY(printf("New max dev. = %d at pixel (%d, %d) = (%d %d %d %d)\n", |
| 707 | maxGrayDeviation, i, j, rr, gg, bb, aa)); |
| 708 | } |
| 709 | |
| 710 | // Check if image is really grayscale |
| 711 | if (isGrayscale) { |
| 712 | if (rr != gg || rr != bb) { |
| 713 | NOISY(printf("Found a non-gray pixel at %d, %d = (%d %d %d %d)\n", |
| 714 | i, j, rr, gg, bb, aa)); |
| 715 | isGrayscale = false; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | // Check if image is really opaque |
| 720 | if (isOpaque) { |
| 721 | if (aa != 0xff) { |
| 722 | NOISY(printf("Found a non-opaque pixel at %d, %d = (%d %d %d %d)\n", |
| 723 | i, j, rr, gg, bb, aa)); |
| 724 | isOpaque = false; |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | // Check if image is really <= 256 colors |
| 729 | if (isPalette) { |
| 730 | col = (uint32_t) ((rr << 24) | (gg << 16) | (bb << 8) | aa); |
| 731 | bool match = false; |
| 732 | for (idx = 0; idx < num_colors; idx++) { |
| 733 | if (colors[idx] == col) { |
| 734 | match = true; |
| 735 | break; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | // Write the palette index for the pixel to outRows optimistically |
| 740 | // We might overwrite it later if we decide to encode as gray or |
| 741 | // gray + alpha |
| 742 | *out++ = idx; |
| 743 | if (!match) { |
| 744 | if (num_colors == 256) { |
| 745 | NOISY(printf("Found 257th color at %d, %d\n", i, j)); |
| 746 | isPalette = false; |
| 747 | } else { |
| 748 | colors[num_colors++] = col; |
| 749 | } |
| 750 | } |
| 751 | } |
| 752 | } |
| 753 | } |
| 754 | |
| 755 | *paletteEntries = 0; |
| 756 | *hasTransparency = !isOpaque; |
| 757 | int bpp = isOpaque ? 3 : 4; |
| 758 | int paletteSize = w * h + bpp * num_colors; |
| 759 | |
| 760 | NOISY(printf("isGrayscale = %s\n", isGrayscale ? "true" : "false")); |
| 761 | NOISY(printf("isOpaque = %s\n", isOpaque ? "true" : "false")); |
| 762 | NOISY(printf("isPalette = %s\n", isPalette ? "true" : "false")); |
| 763 | NOISY(printf("Size w/ palette = %d, gray+alpha = %d, rgb(a) = %d\n", |
| 764 | paletteSize, 2 * w * h, bpp * w * h)); |
| 765 | NOISY(printf("Max gray deviation = %d, tolerance = %d\n", maxGrayDeviation, grayscaleTolerance)); |
| 766 | |
| 767 | // Choose the best color type for the image. |
| 768 | // 1. Opaque gray - use COLOR_TYPE_GRAY at 1 byte/pixel |
| 769 | // 2. Gray + alpha - use COLOR_TYPE_PALETTE if the number of distinct combinations |
| 770 | // is sufficiently small, otherwise use COLOR_TYPE_GRAY_ALPHA |
| 771 | // 3. RGB(A) - use COLOR_TYPE_PALETTE if the number of distinct colors is sufficiently |
| 772 | // small, otherwise use COLOR_TYPE_RGB{_ALPHA} |
| 773 | if (isGrayscale) { |
| 774 | if (isOpaque) { |
| 775 | *colorType = PNG_COLOR_TYPE_GRAY; // 1 byte/pixel |
| 776 | } else { |
| 777 | // Use a simple heuristic to determine whether using a palette will |
| 778 | // save space versus using gray + alpha for each pixel. |
| 779 | // This doesn't take into account chunk overhead, filtering, LZ |
| 780 | // compression, etc. |
| 781 | if (isPalette && (paletteSize < 2 * w * h)) { |
| 782 | *colorType = PNG_COLOR_TYPE_PALETTE; // 1 byte/pixel + 4 bytes/color |
| 783 | } else { |
| 784 | *colorType = PNG_COLOR_TYPE_GRAY_ALPHA; // 2 bytes per pixel |
| 785 | } |
| 786 | } |
| 787 | } else if (isPalette && (paletteSize < bpp * w * h)) { |
| 788 | *colorType = PNG_COLOR_TYPE_PALETTE; |
| 789 | } else { |
| 790 | if (maxGrayDeviation <= grayscaleTolerance) { |
| 791 | printf("%s: forcing image to gray (max deviation = %d)\n", imageName, maxGrayDeviation); |
| 792 | *colorType = isOpaque ? PNG_COLOR_TYPE_GRAY : PNG_COLOR_TYPE_GRAY_ALPHA; |
| 793 | } else { |
| 794 | *colorType = isOpaque ? PNG_COLOR_TYPE_RGB : PNG_COLOR_TYPE_RGB_ALPHA; |
| 795 | } |
| 796 | } |
| 797 | |
| 798 | // Perform postprocessing of the image or palette data based on the final |
| 799 | // color type chosen |
| 800 | |
| 801 | if (*colorType == PNG_COLOR_TYPE_PALETTE) { |
| 802 | // Create separate RGB and Alpha palettes and set the number of colors |
| 803 | *paletteEntries = num_colors; |
| 804 | |
| 805 | // Create the RGB and alpha palettes |
| 806 | for (int idx = 0; idx < num_colors; idx++) { |
| 807 | col = colors[idx]; |
| 808 | rgbPalette[idx].red = (png_byte) ((col >> 24) & 0xff); |
| 809 | rgbPalette[idx].green = (png_byte) ((col >> 16) & 0xff); |
| 810 | rgbPalette[idx].blue = (png_byte) ((col >> 8) & 0xff); |
| 811 | alphaPalette[idx] = (png_byte) (col & 0xff); |
| 812 | } |
| 813 | } else if (*colorType == PNG_COLOR_TYPE_GRAY || *colorType == PNG_COLOR_TYPE_GRAY_ALPHA) { |
| 814 | // If the image is gray or gray + alpha, compact the pixels into outRows |
| 815 | for (j = 0; j < h; j++) { |
| 816 | png_bytep row = imageInfo.rows[j]; |
| 817 | png_bytep out = outRows[j]; |
| 818 | for (i = 0; i < w; i++) { |
| 819 | rr = *row++; |
| 820 | gg = *row++; |
| 821 | bb = *row++; |
| 822 | aa = *row++; |
| 823 | |
| 824 | if (isGrayscale) { |
| 825 | *out++ = rr; |
| 826 | } else { |
| 827 | *out++ = (png_byte) (rr * 0.2126f + gg * 0.7152f + bb * 0.0722f); |
| 828 | } |
| 829 | if (!isOpaque) { |
| 830 | *out++ = aa; |
| 831 | } |
| 832 | } |
| 833 | } |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | |
| 838 | static void write_png(const char* imageName, |
| 839 | png_structp write_ptr, png_infop write_info, |
| 840 | image_info& imageInfo, int grayscaleTolerance) |
| 841 | { |
| 842 | bool optimize = true; |
| 843 | png_uint_32 width, height; |
| 844 | int color_type; |
| 845 | int bit_depth, interlace_type, compression_type; |
| 846 | int i; |
| 847 | |
| 848 | png_unknown_chunk unknowns[1]; |
Marco Nelissen | 6a1fade | 2009-04-20 16:16:01 -0700 | [diff] [blame] | 849 | unknowns[0].data = NULL; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 850 | |
| 851 | png_bytepp outRows = (png_bytepp) malloc((int) imageInfo.height * png_sizeof(png_bytep)); |
| 852 | if (outRows == (png_bytepp) 0) { |
| 853 | printf("Can't allocate output buffer!\n"); |
| 854 | exit(1); |
| 855 | } |
| 856 | for (i = 0; i < (int) imageInfo.height; i++) { |
| 857 | outRows[i] = (png_bytep) malloc(2 * (int) imageInfo.width); |
| 858 | if (outRows[i] == (png_bytep) 0) { |
| 859 | printf("Can't allocate output buffer!\n"); |
| 860 | exit(1); |
| 861 | } |
| 862 | } |
| 863 | |
| 864 | png_set_compression_level(write_ptr, Z_BEST_COMPRESSION); |
| 865 | |
| 866 | NOISY(printf("Writing image %s: w = %d, h = %d\n", imageName, |
| 867 | (int) imageInfo.width, (int) imageInfo.height)); |
| 868 | |
| 869 | png_color rgbPalette[256]; |
| 870 | png_byte alphaPalette[256]; |
| 871 | bool hasTransparency; |
| 872 | int paletteEntries; |
| 873 | |
| 874 | analyze_image(imageName, imageInfo, grayscaleTolerance, rgbPalette, alphaPalette, |
| 875 | &paletteEntries, &hasTransparency, &color_type, outRows); |
| 876 | |
| 877 | // If the image is a 9-patch, we need to preserve it as a ARGB file to make |
| 878 | // sure the pixels will not be pre-dithered/clamped until we decide they are |
| 879 | if (imageInfo.is9Patch && (color_type == PNG_COLOR_TYPE_RGB || |
| 880 | color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_PALETTE)) { |
| 881 | color_type = PNG_COLOR_TYPE_RGB_ALPHA; |
| 882 | } |
| 883 | |
| 884 | switch (color_type) { |
| 885 | case PNG_COLOR_TYPE_PALETTE: |
| 886 | NOISY(printf("Image %s has %d colors%s, using PNG_COLOR_TYPE_PALETTE\n", |
| 887 | imageName, paletteEntries, |
| 888 | hasTransparency ? " (with alpha)" : "")); |
| 889 | break; |
| 890 | case PNG_COLOR_TYPE_GRAY: |
| 891 | NOISY(printf("Image %s is opaque gray, using PNG_COLOR_TYPE_GRAY\n", imageName)); |
| 892 | break; |
| 893 | case PNG_COLOR_TYPE_GRAY_ALPHA: |
| 894 | NOISY(printf("Image %s is gray + alpha, using PNG_COLOR_TYPE_GRAY_ALPHA\n", imageName)); |
| 895 | break; |
| 896 | case PNG_COLOR_TYPE_RGB: |
| 897 | NOISY(printf("Image %s is opaque RGB, using PNG_COLOR_TYPE_RGB\n", imageName)); |
| 898 | break; |
| 899 | case PNG_COLOR_TYPE_RGB_ALPHA: |
| 900 | NOISY(printf("Image %s is RGB + alpha, using PNG_COLOR_TYPE_RGB_ALPHA\n", imageName)); |
| 901 | break; |
| 902 | } |
| 903 | |
| 904 | png_set_IHDR(write_ptr, write_info, imageInfo.width, imageInfo.height, |
| 905 | 8, color_type, PNG_INTERLACE_NONE, |
| 906 | PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); |
| 907 | |
| 908 | if (color_type == PNG_COLOR_TYPE_PALETTE) { |
| 909 | png_set_PLTE(write_ptr, write_info, rgbPalette, paletteEntries); |
| 910 | if (hasTransparency) { |
| 911 | png_set_tRNS(write_ptr, write_info, alphaPalette, paletteEntries, (png_color_16p) 0); |
| 912 | } |
| 913 | png_set_filter(write_ptr, 0, PNG_NO_FILTERS); |
| 914 | } else { |
| 915 | png_set_filter(write_ptr, 0, PNG_ALL_FILTERS); |
| 916 | } |
| 917 | |
| 918 | if (imageInfo.is9Patch) { |
| 919 | NOISY(printf("Adding 9-patch info...\n")); |
| 920 | strcpy((char*)unknowns[0].name, "npTc"); |
| 921 | unknowns[0].data = (png_byte*)imageInfo.info9Patch.serialize(); |
| 922 | unknowns[0].size = imageInfo.info9Patch.serializedSize(); |
| 923 | // TODO: remove the check below when everything works |
| 924 | checkNinePatchSerialization(&imageInfo.info9Patch, unknowns[0].data); |
| 925 | png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS, |
| 926 | (png_byte*)"npTc", 1); |
| 927 | png_set_unknown_chunks(write_ptr, write_info, unknowns, 1); |
| 928 | // XXX I can't get this to work without forcibly changing |
| 929 | // the location to what I want... which apparently is supposed |
| 930 | // to be a private API, but everything else I have tried results |
| 931 | // in the location being set to what I -last- wrote so I never |
| 932 | // get written. :p |
| 933 | png_set_unknown_chunk_location(write_ptr, write_info, 0, PNG_HAVE_PLTE); |
| 934 | } |
| 935 | |
| 936 | png_write_info(write_ptr, write_info); |
| 937 | |
| 938 | png_bytepp rows; |
| 939 | if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA) { |
| 940 | png_set_filler(write_ptr, 0, PNG_FILLER_AFTER); |
| 941 | rows = imageInfo.rows; |
| 942 | } else { |
| 943 | rows = outRows; |
| 944 | } |
| 945 | png_write_image(write_ptr, rows); |
| 946 | |
| 947 | // NOISY(printf("Final image data:\n")); |
| 948 | // dump_image(imageInfo.width, imageInfo.height, rows, color_type); |
| 949 | |
| 950 | png_write_end(write_ptr, write_info); |
| 951 | |
| 952 | for (i = 0; i < (int) imageInfo.height; i++) { |
| 953 | free(outRows[i]); |
| 954 | } |
| 955 | free(outRows); |
Marco Nelissen | 6a1fade | 2009-04-20 16:16:01 -0700 | [diff] [blame] | 956 | free(unknowns[0].data); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 957 | |
| 958 | png_get_IHDR(write_ptr, write_info, &width, &height, |
| 959 | &bit_depth, &color_type, &interlace_type, |
| 960 | &compression_type, NULL); |
| 961 | |
| 962 | NOISY(printf("Image written: w=%d, h=%d, d=%d, colors=%d, inter=%d, comp=%d\n", |
| 963 | (int)width, (int)height, bit_depth, color_type, interlace_type, |
| 964 | compression_type)); |
| 965 | } |
| 966 | |
| 967 | status_t preProcessImage(Bundle* bundle, const sp<AaptAssets>& assets, |
| 968 | const sp<AaptFile>& file, String8* outNewLeafName) |
| 969 | { |
| 970 | String8 ext(file->getPath().getPathExtension()); |
| 971 | |
| 972 | // We currently only process PNG images. |
| 973 | if (strcmp(ext.string(), ".png") != 0) { |
| 974 | return NO_ERROR; |
| 975 | } |
| 976 | |
| 977 | // Example of renaming a file: |
| 978 | //*outNewLeafName = file->getPath().getBasePath().getFileName(); |
| 979 | //outNewLeafName->append(".nupng"); |
| 980 | |
| 981 | String8 printableName(file->getPrintableSource()); |
| 982 | |
| 983 | png_structp read_ptr = NULL; |
| 984 | png_infop read_info = NULL; |
| 985 | FILE* fp; |
| 986 | |
| 987 | image_info imageInfo; |
| 988 | |
| 989 | png_structp write_ptr = NULL; |
| 990 | png_infop write_info = NULL; |
| 991 | |
| 992 | status_t error = UNKNOWN_ERROR; |
| 993 | |
| 994 | const size_t nameLen = file->getPath().length(); |
| 995 | |
| 996 | fp = fopen(file->getSourceFile().string(), "rb"); |
| 997 | if (fp == NULL) { |
| 998 | fprintf(stderr, "%s: ERROR: Unable to open PNG file\n", printableName.string()); |
| 999 | goto bail; |
| 1000 | } |
| 1001 | |
| 1002 | read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, (png_error_ptr)NULL, |
| 1003 | (png_error_ptr)NULL); |
| 1004 | if (!read_ptr) { |
| 1005 | goto bail; |
| 1006 | } |
| 1007 | |
| 1008 | read_info = png_create_info_struct(read_ptr); |
| 1009 | if (!read_info) { |
| 1010 | goto bail; |
| 1011 | } |
| 1012 | |
| 1013 | if (setjmp(png_jmpbuf(read_ptr))) { |
| 1014 | goto bail; |
| 1015 | } |
| 1016 | |
| 1017 | png_init_io(read_ptr, fp); |
| 1018 | |
| 1019 | read_png(printableName.string(), read_ptr, read_info, &imageInfo); |
| 1020 | |
| 1021 | if (nameLen > 6) { |
| 1022 | const char* name = file->getPath().string(); |
| 1023 | if (name[nameLen-5] == '9' && name[nameLen-6] == '.') { |
| 1024 | if (do_9patch(printableName.string(), &imageInfo) != NO_ERROR) { |
| 1025 | goto bail; |
| 1026 | } |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, (png_error_ptr)NULL, |
| 1031 | (png_error_ptr)NULL); |
| 1032 | if (!write_ptr) |
| 1033 | { |
| 1034 | goto bail; |
| 1035 | } |
| 1036 | |
| 1037 | write_info = png_create_info_struct(write_ptr); |
| 1038 | if (!write_info) |
| 1039 | { |
| 1040 | goto bail; |
| 1041 | } |
| 1042 | |
| 1043 | png_set_write_fn(write_ptr, (void*)file.get(), |
| 1044 | png_write_aapt_file, png_flush_aapt_file); |
| 1045 | |
| 1046 | if (setjmp(png_jmpbuf(write_ptr))) |
| 1047 | { |
| 1048 | goto bail; |
| 1049 | } |
| 1050 | |
| 1051 | write_png(printableName.string(), write_ptr, write_info, imageInfo, |
| 1052 | bundle->getGrayscaleTolerance()); |
| 1053 | |
| 1054 | error = NO_ERROR; |
| 1055 | |
| 1056 | if (bundle->getVerbose()) { |
| 1057 | fseek(fp, 0, SEEK_END); |
| 1058 | size_t oldSize = (size_t)ftell(fp); |
| 1059 | size_t newSize = file->getSize(); |
| 1060 | float factor = ((float)newSize)/oldSize; |
| 1061 | int percent = (int)(factor*100); |
| 1062 | printf(" (processed image %s: %d%% size of source)\n", printableName.string(), percent); |
| 1063 | } |
| 1064 | |
| 1065 | bail: |
| 1066 | if (read_ptr) { |
| 1067 | png_destroy_read_struct(&read_ptr, &read_info, (png_infopp)NULL); |
| 1068 | } |
| 1069 | if (fp) { |
| 1070 | fclose(fp); |
| 1071 | } |
| 1072 | if (write_ptr) { |
| 1073 | png_destroy_write_struct(&write_ptr, &write_info); |
| 1074 | } |
| 1075 | |
| 1076 | if (error != NO_ERROR) { |
| 1077 | fprintf(stderr, "ERROR: Failure processing PNG image %s\n", |
| 1078 | file->getPrintableSource().string()); |
| 1079 | } |
| 1080 | return error; |
| 1081 | } |
| 1082 | |
Josiah Gaskin | 8a39da8 | 2011-06-06 17:00:35 -0700 | [diff] [blame^] | 1083 | status_t preProcessImageToCache(Bundle* bundle, String8 source, String8 dest) |
| 1084 | { |
| 1085 | png_structp read_ptr = NULL; |
| 1086 | png_infop read_info = NULL; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1087 | |
Josiah Gaskin | 8a39da8 | 2011-06-06 17:00:35 -0700 | [diff] [blame^] | 1088 | FILE* fp; |
| 1089 | |
| 1090 | image_info imageInfo; |
| 1091 | |
| 1092 | png_structp write_ptr = NULL; |
| 1093 | png_infop write_info = NULL; |
| 1094 | |
| 1095 | status_t error = UNKNOWN_ERROR; |
| 1096 | |
| 1097 | // Get a file handler to read from |
| 1098 | fp = fopen(source.string(),"rb"); |
| 1099 | if (fp == NULL) { |
| 1100 | fprintf(stderr, "%s ERROR: Unable to open PNG file\n", source.string()); |
| 1101 | return error; |
| 1102 | } |
| 1103 | |
| 1104 | // Call libpng to get a struct to read image data into |
| 1105 | read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); |
| 1106 | if (!read_ptr) { |
| 1107 | fclose(fp); |
| 1108 | png_destroy_read_struct(&read_ptr, &read_info,NULL); |
| 1109 | return error; |
| 1110 | } |
| 1111 | |
| 1112 | // Call libpng to get a struct to read image info into |
| 1113 | read_info = png_create_info_struct(read_ptr); |
| 1114 | if (!read_info) { |
| 1115 | fclose(fp); |
| 1116 | png_destroy_read_struct(&read_ptr, &read_info,NULL); |
| 1117 | return error; |
| 1118 | } |
| 1119 | |
| 1120 | // Set a jump point for libpng to long jump back to on error |
| 1121 | if (setjmp(png_jmpbuf(read_ptr))) { |
| 1122 | fclose(fp); |
| 1123 | png_destroy_read_struct(&read_ptr, &read_info,NULL); |
| 1124 | return error; |
| 1125 | } |
| 1126 | |
| 1127 | // Set up libpng to read from our file. |
| 1128 | png_init_io(read_ptr,fp); |
| 1129 | |
| 1130 | // Actually read data from the file |
| 1131 | read_png(source.string(), read_ptr, read_info, &imageInfo); |
| 1132 | |
| 1133 | // We're done reading so we can clean up |
| 1134 | // Find old file size before releasing handle |
| 1135 | fseek(fp, 0, SEEK_END); |
| 1136 | size_t oldSize = (size_t)ftell(fp); |
| 1137 | fclose(fp); |
| 1138 | png_destroy_read_struct(&read_ptr, &read_info,NULL); |
| 1139 | |
| 1140 | // Check to see if we're dealing with a 9-patch |
| 1141 | // If we are, process appropriately |
| 1142 | if (source.getBasePath().getPathExtension() == ".9") { |
| 1143 | if (do_9patch(source.string(), &imageInfo) != NO_ERROR) { |
| 1144 | return error; |
| 1145 | } |
| 1146 | } |
| 1147 | |
| 1148 | // Call libpng to create a structure to hold the processed image data |
| 1149 | // that can be written to disk |
| 1150 | write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); |
| 1151 | if (!write_ptr) { |
| 1152 | png_destroy_write_struct(&write_ptr, &write_info); |
| 1153 | return error; |
| 1154 | } |
| 1155 | |
| 1156 | // Call libpng to create a structure to hold processed image info that can |
| 1157 | // be written to disk |
| 1158 | write_info = png_create_info_struct(write_ptr); |
| 1159 | if (!write_info) { |
| 1160 | png_destroy_write_struct(&write_ptr, &write_info); |
| 1161 | return error; |
| 1162 | } |
| 1163 | |
| 1164 | // Open up our destination file for writing |
| 1165 | fp = fopen(dest.string(), "wb"); |
| 1166 | if (!fp) { |
| 1167 | fprintf(stderr, "%s ERROR: Unable to open PNG file\n", dest.string()); |
| 1168 | png_destroy_write_struct(&write_ptr, &write_info); |
| 1169 | return error; |
| 1170 | } |
| 1171 | |
| 1172 | // Set up libpng to write to our file |
| 1173 | png_init_io(write_ptr, fp); |
| 1174 | |
| 1175 | // Set up a jump for libpng to long jump back on on errors |
| 1176 | if (setjmp(png_jmpbuf(write_ptr))) { |
| 1177 | fclose(fp); |
| 1178 | png_destroy_write_struct(&write_ptr, &write_info); |
| 1179 | return error; |
| 1180 | } |
| 1181 | |
| 1182 | // Actually write out to the new png |
| 1183 | write_png(dest.string(), write_ptr, write_info, imageInfo, |
| 1184 | bundle->getGrayscaleTolerance()); |
| 1185 | |
| 1186 | if (bundle->getVerbose()) { |
| 1187 | // Find the size of our new file |
| 1188 | FILE* reader = fopen(dest.string(), "rb"); |
| 1189 | fseek(reader, 0, SEEK_END); |
| 1190 | size_t newSize = (size_t)ftell(reader); |
| 1191 | fclose(reader); |
| 1192 | |
| 1193 | float factor = ((float)newSize)/oldSize; |
| 1194 | int percent = (int)(factor*100); |
| 1195 | printf(" (processed image to cache entry %s: %d%% size of source)\n", |
| 1196 | dest.string(), percent); |
| 1197 | } |
| 1198 | |
| 1199 | //Clean up |
| 1200 | fclose(fp); |
| 1201 | png_destroy_write_struct(&write_ptr, &write_info); |
| 1202 | |
| 1203 | return NO_ERROR; |
| 1204 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1205 | |
| 1206 | status_t postProcessImage(const sp<AaptAssets>& assets, |
| 1207 | ResourceTable* table, const sp<AaptFile>& file) |
| 1208 | { |
| 1209 | String8 ext(file->getPath().getPathExtension()); |
| 1210 | |
| 1211 | // At this point, now that we have all the resource data, all we need to |
| 1212 | // do is compile XML files. |
| 1213 | if (strcmp(ext.string(), ".xml") == 0) { |
| 1214 | return compileXmlFile(assets, file, table); |
| 1215 | } |
| 1216 | |
| 1217 | return NO_ERROR; |
| 1218 | } |