| // | |
| // Copyright 2006 The Android Open Source Project | |
| // | |
| // Build resource files from raw assets. | |
| // | |
| #define PNG_INTERNAL | |
| #include "Images.h" | |
| #include <androidfw/PathUtils.h> | |
| #include <androidfw/ResourceTypes.h> | |
| #include <utils/ByteOrder.h> | |
| #include <png.h> | |
| #include <zlib.h> | |
| // Change this to true for noisy debug output. | |
| static const bool kIsDebug = false; | |
| static void | |
| png_write_aapt_file(png_structp png_ptr, png_bytep data, png_size_t length) | |
| { | |
| AaptFile* aaptfile = (AaptFile*) png_get_io_ptr(png_ptr); | |
| status_t err = aaptfile->writeData(data, length); | |
| if (err != NO_ERROR) { | |
| png_error(png_ptr, "Write Error"); | |
| } | |
| } | |
| static void | |
| png_flush_aapt_file(png_structp /* png_ptr */) | |
| { | |
| } | |
| // This holds an image as 8bpp RGBA. | |
| struct image_info | |
| { | |
| image_info() : rows(NULL), is9Patch(false), | |
| xDivs(NULL), yDivs(NULL), colors(NULL), allocRows(NULL) { } | |
| ~image_info() { | |
| if (rows && rows != allocRows) { | |
| free(rows); | |
| } | |
| if (allocRows) { | |
| for (int i=0; i<(int)allocHeight; i++) { | |
| free(allocRows[i]); | |
| } | |
| free(allocRows); | |
| } | |
| free(xDivs); | |
| free(yDivs); | |
| free(colors); | |
| } | |
| void* serialize9patch() { | |
| void* serialized = Res_png_9patch::serialize(info9Patch, xDivs, yDivs, colors); | |
| reinterpret_cast<Res_png_9patch*>(serialized)->deviceToFile(); | |
| return serialized; | |
| } | |
| png_uint_32 width; | |
| png_uint_32 height; | |
| png_bytepp rows; | |
| // 9-patch info. | |
| bool is9Patch; | |
| Res_png_9patch info9Patch; | |
| int32_t* xDivs; | |
| int32_t* yDivs; | |
| uint32_t* colors; | |
| // Layout padding, if relevant | |
| bool haveLayoutBounds; | |
| int32_t layoutBoundsLeft; | |
| int32_t layoutBoundsTop; | |
| int32_t layoutBoundsRight; | |
| int32_t layoutBoundsBottom; | |
| // Round rect outline description | |
| int32_t outlineInsetsLeft; | |
| int32_t outlineInsetsTop; | |
| int32_t outlineInsetsRight; | |
| int32_t outlineInsetsBottom; | |
| float outlineRadius; | |
| uint8_t outlineAlpha; | |
| png_uint_32 allocHeight; | |
| png_bytepp allocRows; | |
| }; | |
| static void log_warning(png_structp png_ptr, png_const_charp warning_message) | |
| { | |
| const char* imageName = (const char*) png_get_error_ptr(png_ptr); | |
| fprintf(stderr, "%s: libpng warning: %s\n", imageName, warning_message); | |
| } | |
| static void read_png(const char* imageName, | |
| png_structp read_ptr, png_infop read_info, | |
| image_info* outImageInfo) | |
| { | |
| int color_type; | |
| int bit_depth, interlace_type, compression_type; | |
| int i; | |
| png_set_error_fn(read_ptr, const_cast<char*>(imageName), | |
| NULL /* use default errorfn */, log_warning); | |
| png_read_info(read_ptr, read_info); | |
| png_get_IHDR(read_ptr, read_info, &outImageInfo->width, | |
| &outImageInfo->height, &bit_depth, &color_type, | |
| &interlace_type, &compression_type, NULL); | |
| //printf("Image %s:\n", imageName); | |
| //printf("color_type=%d, bit_depth=%d, interlace_type=%d, compression_type=%d\n", | |
| // color_type, bit_depth, interlace_type, compression_type); | |
| if (color_type == PNG_COLOR_TYPE_PALETTE) | |
| png_set_palette_to_rgb(read_ptr); | |
| if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) | |
| png_set_expand_gray_1_2_4_to_8(read_ptr); | |
| if (png_get_valid(read_ptr, read_info, PNG_INFO_tRNS)) { | |
| //printf("Has PNG_INFO_tRNS!\n"); | |
| png_set_tRNS_to_alpha(read_ptr); | |
| } | |
| if (bit_depth == 16) | |
| png_set_strip_16(read_ptr); | |
| if ((color_type&PNG_COLOR_MASK_ALPHA) == 0) | |
| png_set_add_alpha(read_ptr, 0xFF, PNG_FILLER_AFTER); | |
| if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
| png_set_gray_to_rgb(read_ptr); | |
| png_set_interlace_handling(read_ptr); | |
| png_read_update_info(read_ptr, read_info); | |
| outImageInfo->rows = (png_bytepp)malloc( | |
| outImageInfo->height * sizeof(png_bytep)); | |
| outImageInfo->allocHeight = outImageInfo->height; | |
| outImageInfo->allocRows = outImageInfo->rows; | |
| png_set_rows(read_ptr, read_info, outImageInfo->rows); | |
| for (i = 0; i < (int)outImageInfo->height; i++) | |
| { | |
| outImageInfo->rows[i] = (png_bytep) | |
| malloc(png_get_rowbytes(read_ptr, read_info)); | |
| } | |
| png_read_image(read_ptr, outImageInfo->rows); | |
| png_read_end(read_ptr, read_info); | |
| if (kIsDebug) { | |
| printf("Image %s: w=%d, h=%d, d=%d, colors=%d, inter=%d, comp=%d\n", | |
| imageName, | |
| (int)outImageInfo->width, (int)outImageInfo->height, | |
| bit_depth, color_type, | |
| interlace_type, compression_type); | |
| } | |
| png_get_IHDR(read_ptr, read_info, &outImageInfo->width, | |
| &outImageInfo->height, &bit_depth, &color_type, | |
| &interlace_type, &compression_type, NULL); | |
| } | |
| #define COLOR_TRANSPARENT 0 | |
| #define COLOR_WHITE 0xFFFFFFFF | |
| #define COLOR_TICK 0xFF000000 | |
| #define COLOR_LAYOUT_BOUNDS_TICK 0xFF0000FF | |
| enum { | |
| TICK_TYPE_NONE, | |
| TICK_TYPE_TICK, | |
| TICK_TYPE_LAYOUT_BOUNDS, | |
| TICK_TYPE_BOTH | |
| }; | |
| static int tick_type(png_bytep p, bool transparent, const char** outError) | |
| { | |
| png_uint_32 color = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); | |
| if (transparent) { | |
| if (p[3] == 0) { | |
| return TICK_TYPE_NONE; | |
| } | |
| if (color == COLOR_LAYOUT_BOUNDS_TICK) { | |
| return TICK_TYPE_LAYOUT_BOUNDS; | |
| } | |
| if (color == COLOR_TICK) { | |
| return TICK_TYPE_TICK; | |
| } | |
| // Error cases | |
| if (p[3] != 0xff) { | |
| *outError = "Frame pixels must be either solid or transparent (not intermediate alphas)"; | |
| return TICK_TYPE_NONE; | |
| } | |
| if (p[0] != 0 || p[1] != 0 || p[2] != 0) { | |
| *outError = "Ticks in transparent frame must be black or red"; | |
| } | |
| return TICK_TYPE_TICK; | |
| } | |
| if (p[3] != 0xFF) { | |
| *outError = "White frame must be a solid color (no alpha)"; | |
| } | |
| if (color == COLOR_WHITE) { | |
| return TICK_TYPE_NONE; | |
| } | |
| if (color == COLOR_TICK) { | |
| return TICK_TYPE_TICK; | |
| } | |
| if (color == COLOR_LAYOUT_BOUNDS_TICK) { | |
| return TICK_TYPE_LAYOUT_BOUNDS; | |
| } | |
| if (p[0] != 0 || p[1] != 0 || p[2] != 0) { | |
| *outError = "Ticks in white frame must be black or red"; | |
| return TICK_TYPE_NONE; | |
| } | |
| return TICK_TYPE_TICK; | |
| } | |
| enum { | |
| TICK_START, | |
| TICK_INSIDE_1, | |
| TICK_OUTSIDE_1 | |
| }; | |
| static status_t get_horizontal_ticks( | |
| png_bytep row, int width, bool transparent, bool required, | |
| int32_t* outLeft, int32_t* outRight, const char** outError, | |
| uint8_t* outDivs, bool multipleAllowed) | |
| { | |
| int i; | |
| *outLeft = *outRight = -1; | |
| int state = TICK_START; | |
| bool found = false; | |
| for (i=1; i<width-1; i++) { | |
| if (TICK_TYPE_TICK == tick_type(row+i*4, transparent, outError)) { | |
| if (state == TICK_START || | |
| (state == TICK_OUTSIDE_1 && multipleAllowed)) { | |
| *outLeft = i-1; | |
| *outRight = width-2; | |
| found = true; | |
| if (outDivs != NULL) { | |
| *outDivs += 2; | |
| } | |
| state = TICK_INSIDE_1; | |
| } else if (state == TICK_OUTSIDE_1) { | |
| *outError = "Can't have more than one marked region along edge"; | |
| *outLeft = i; | |
| return UNKNOWN_ERROR; | |
| } | |
| } else if (*outError == NULL) { | |
| if (state == TICK_INSIDE_1) { | |
| // We're done with this div. Move on to the next. | |
| *outRight = i-1; | |
| outRight += 2; | |
| outLeft += 2; | |
| state = TICK_OUTSIDE_1; | |
| } | |
| } else { | |
| *outLeft = i; | |
| return UNKNOWN_ERROR; | |
| } | |
| } | |
| if (required && !found) { | |
| *outError = "No marked region found along edge"; | |
| *outLeft = -1; | |
| return UNKNOWN_ERROR; | |
| } | |
| return NO_ERROR; | |
| } | |
| static status_t get_vertical_ticks( | |
| png_bytepp rows, int offset, int height, bool transparent, bool required, | |
| int32_t* outTop, int32_t* outBottom, const char** outError, | |
| uint8_t* outDivs, bool multipleAllowed) | |
| { | |
| int i; | |
| *outTop = *outBottom = -1; | |
| int state = TICK_START; | |
| bool found = false; | |
| for (i=1; i<height-1; i++) { | |
| if (TICK_TYPE_TICK == tick_type(rows[i]+offset, transparent, outError)) { | |
| if (state == TICK_START || | |
| (state == TICK_OUTSIDE_1 && multipleAllowed)) { | |
| *outTop = i-1; | |
| *outBottom = height-2; | |
| found = true; | |
| if (outDivs != NULL) { | |
| *outDivs += 2; | |
| } | |
| state = TICK_INSIDE_1; | |
| } else if (state == TICK_OUTSIDE_1) { | |
| *outError = "Can't have more than one marked region along edge"; | |
| *outTop = i; | |
| return UNKNOWN_ERROR; | |
| } | |
| } else if (*outError == NULL) { | |
| if (state == TICK_INSIDE_1) { | |
| // We're done with this div. Move on to the next. | |
| *outBottom = i-1; | |
| outTop += 2; | |
| outBottom += 2; | |
| state = TICK_OUTSIDE_1; | |
| } | |
| } else { | |
| *outTop = i; | |
| return UNKNOWN_ERROR; | |
| } | |
| } | |
| if (required && !found) { | |
| *outError = "No marked region found along edge"; | |
| *outTop = -1; | |
| return UNKNOWN_ERROR; | |
| } | |
| return NO_ERROR; | |
| } | |
| static status_t get_horizontal_layout_bounds_ticks( | |
| png_bytep row, int width, bool transparent, bool /* required */, | |
| int32_t* outLeft, int32_t* outRight, const char** outError) | |
| { | |
| int i; | |
| *outLeft = *outRight = 0; | |
| // Look for left tick | |
| if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(row + 4, transparent, outError)) { | |
| // Starting with a layout padding tick | |
| i = 1; | |
| while (i < width - 1) { | |
| (*outLeft)++; | |
| i++; | |
| int tick = tick_type(row + i * 4, transparent, outError); | |
| if (tick != TICK_TYPE_LAYOUT_BOUNDS) { | |
| break; | |
| } | |
| } | |
| } | |
| // Look for right tick | |
| if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(row + (width - 2) * 4, transparent, outError)) { | |
| // Ending with a layout padding tick | |
| i = width - 2; | |
| while (i > 1) { | |
| (*outRight)++; | |
| i--; | |
| int tick = tick_type(row+i*4, transparent, outError); | |
| if (tick != TICK_TYPE_LAYOUT_BOUNDS) { | |
| break; | |
| } | |
| } | |
| } | |
| return NO_ERROR; | |
| } | |
| static status_t get_vertical_layout_bounds_ticks( | |
| png_bytepp rows, int offset, int height, bool transparent, bool /* required */, | |
| int32_t* outTop, int32_t* outBottom, const char** outError) | |
| { | |
| int i; | |
| *outTop = *outBottom = 0; | |
| // Look for top tick | |
| if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(rows[1] + offset, transparent, outError)) { | |
| // Starting with a layout padding tick | |
| i = 1; | |
| while (i < height - 1) { | |
| (*outTop)++; | |
| i++; | |
| int tick = tick_type(rows[i] + offset, transparent, outError); | |
| if (tick != TICK_TYPE_LAYOUT_BOUNDS) { | |
| break; | |
| } | |
| } | |
| } | |
| // Look for bottom tick | |
| if (TICK_TYPE_LAYOUT_BOUNDS == tick_type(rows[height - 2] + offset, transparent, outError)) { | |
| // Ending with a layout padding tick | |
| i = height - 2; | |
| while (i > 1) { | |
| (*outBottom)++; | |
| i--; | |
| int tick = tick_type(rows[i] + offset, transparent, outError); | |
| if (tick != TICK_TYPE_LAYOUT_BOUNDS) { | |
| break; | |
| } | |
| } | |
| } | |
| return NO_ERROR; | |
| } | |
| static void find_max_opacity(png_byte** rows, | |
| int startX, int startY, int endX, int endY, int dX, int dY, | |
| int* out_inset) | |
| { | |
| uint8_t max_opacity = 0; | |
| int inset = 0; | |
| *out_inset = 0; | |
| for (int x = startX, y = startY; x != endX && y != endY; x += dX, y += dY, inset++) { | |
| png_byte* color = rows[y] + x * 4; | |
| uint8_t opacity = color[3]; | |
| if (opacity > max_opacity) { | |
| max_opacity = opacity; | |
| *out_inset = inset; | |
| } | |
| if (opacity == 0xff) return; | |
| } | |
| } | |
| static uint8_t max_alpha_over_row(png_byte* row, int startX, int endX) | |
| { | |
| uint8_t max_alpha = 0; | |
| for (int x = startX; x < endX; x++) { | |
| uint8_t alpha = (row + x * 4)[3]; | |
| if (alpha > max_alpha) max_alpha = alpha; | |
| } | |
| return max_alpha; | |
| } | |
| static uint8_t max_alpha_over_col(png_byte** rows, int offsetX, int startY, int endY) | |
| { | |
| uint8_t max_alpha = 0; | |
| for (int y = startY; y < endY; y++) { | |
| uint8_t alpha = (rows[y] + offsetX * 4)[3]; | |
| if (alpha > max_alpha) max_alpha = alpha; | |
| } | |
| return max_alpha; | |
| } | |
| static void get_outline(image_info* image) | |
| { | |
| int midX = image->width / 2; | |
| int midY = image->height / 2; | |
| int endX = image->width - 2; | |
| int endY = image->height - 2; | |
| // find left and right extent of nine patch content on center row | |
| if (image->width > 4) { | |
| find_max_opacity(image->rows, 1, midY, midX, -1, 1, 0, &image->outlineInsetsLeft); | |
| find_max_opacity(image->rows, endX, midY, midX, -1, -1, 0, &image->outlineInsetsRight); | |
| } else { | |
| image->outlineInsetsLeft = 0; | |
| image->outlineInsetsRight = 0; | |
| } | |
| // find top and bottom extent of nine patch content on center column | |
| if (image->height > 4) { | |
| find_max_opacity(image->rows, midX, 1, -1, midY, 0, 1, &image->outlineInsetsTop); | |
| find_max_opacity(image->rows, midX, endY, -1, midY, 0, -1, &image->outlineInsetsBottom); | |
| } else { | |
| image->outlineInsetsTop = 0; | |
| image->outlineInsetsBottom = 0; | |
| } | |
| int innerStartX = 1 + image->outlineInsetsLeft; | |
| int innerStartY = 1 + image->outlineInsetsTop; | |
| int innerEndX = endX - image->outlineInsetsRight; | |
| int innerEndY = endY - image->outlineInsetsBottom; | |
| int innerMidX = (innerEndX + innerStartX) / 2; | |
| int innerMidY = (innerEndY + innerStartY) / 2; | |
| // assuming the image is a round rect, compute the radius by marching | |
| // diagonally from the top left corner towards the center | |
| image->outlineAlpha = std::max( | |
| max_alpha_over_row(image->rows[innerMidY], innerStartX, innerEndX), | |
| max_alpha_over_col(image->rows, innerMidX, innerStartY, innerStartY)); | |
| int diagonalInset = 0; | |
| find_max_opacity(image->rows, innerStartX, innerStartY, innerMidX, innerMidY, 1, 1, | |
| &diagonalInset); | |
| /* Determine source radius based upon inset: | |
| * sqrt(r^2 + r^2) = sqrt(i^2 + i^2) + r | |
| * sqrt(2) * r = sqrt(2) * i + r | |
| * (sqrt(2) - 1) * r = sqrt(2) * i | |
| * r = sqrt(2) / (sqrt(2) - 1) * i | |
| */ | |
| image->outlineRadius = 3.4142f * diagonalInset; | |
| if (kIsDebug) { | |
| printf("outline insets %d %d %d %d, rad %f, alpha %x\n", | |
| image->outlineInsetsLeft, | |
| image->outlineInsetsTop, | |
| image->outlineInsetsRight, | |
| image->outlineInsetsBottom, | |
| image->outlineRadius, | |
| image->outlineAlpha); | |
| } | |
| } | |
| static uint32_t get_color( | |
| png_bytepp rows, int left, int top, int right, int bottom) | |
| { | |
| png_bytep color = rows[top] + left*4; | |
| if (left > right || top > bottom) { | |
| return Res_png_9patch::TRANSPARENT_COLOR; | |
| } | |
| while (top <= bottom) { | |
| for (int i = left; i <= right; i++) { | |
| png_bytep p = rows[top]+i*4; | |
| if (color[3] == 0) { | |
| if (p[3] != 0) { | |
| return Res_png_9patch::NO_COLOR; | |
| } | |
| } else if (p[0] != color[0] || p[1] != color[1] | |
| || p[2] != color[2] || p[3] != color[3]) { | |
| return Res_png_9patch::NO_COLOR; | |
| } | |
| } | |
| top++; | |
| } | |
| if (color[3] == 0) { | |
| return Res_png_9patch::TRANSPARENT_COLOR; | |
| } | |
| return (color[3]<<24) | (color[0]<<16) | (color[1]<<8) | color[2]; | |
| } | |
| static status_t do_9patch(const char* imageName, image_info* image) | |
| { | |
| image->is9Patch = true; | |
| int W = image->width; | |
| int H = image->height; | |
| int i, j; | |
| int maxSizeXDivs = W * sizeof(int32_t); | |
| int maxSizeYDivs = H * sizeof(int32_t); | |
| int32_t* xDivs = image->xDivs = (int32_t*) malloc(maxSizeXDivs); | |
| int32_t* yDivs = image->yDivs = (int32_t*) malloc(maxSizeYDivs); | |
| uint8_t numXDivs = 0; | |
| uint8_t numYDivs = 0; | |
| int8_t numColors; | |
| int numRows; | |
| int numCols; | |
| int top; | |
| int left; | |
| int right; | |
| int bottom; | |
| memset(xDivs, -1, maxSizeXDivs); | |
| memset(yDivs, -1, maxSizeYDivs); | |
| image->info9Patch.paddingLeft = image->info9Patch.paddingRight = | |
| image->info9Patch.paddingTop = image->info9Patch.paddingBottom = -1; | |
| image->layoutBoundsLeft = image->layoutBoundsRight = | |
| image->layoutBoundsTop = image->layoutBoundsBottom = 0; | |
| png_bytep p = image->rows[0]; | |
| bool transparent = p[3] == 0; | |
| bool hasColor = false; | |
| const char* errorMsg = NULL; | |
| int errorPixel = -1; | |
| const char* errorEdge = NULL; | |
| int colorIndex = 0; | |
| // Validate size... | |
| if (W < 3 || H < 3) { | |
| errorMsg = "Image must be at least 3x3 (1x1 without frame) pixels"; | |
| goto getout; | |
| } | |
| // Validate frame... | |
| if (!transparent && | |
| (p[0] != 0xFF || p[1] != 0xFF || p[2] != 0xFF || p[3] != 0xFF)) { | |
| errorMsg = "Must have one-pixel frame that is either transparent or white"; | |
| goto getout; | |
| } | |
| // Find left and right of sizing areas... | |
| if (get_horizontal_ticks(p, W, transparent, true, &xDivs[0], | |
| &xDivs[1], &errorMsg, &numXDivs, true) != NO_ERROR) { | |
| errorPixel = xDivs[0]; | |
| errorEdge = "top"; | |
| goto getout; | |
| } | |
| // Find top and bottom of sizing areas... | |
| if (get_vertical_ticks(image->rows, 0, H, transparent, true, &yDivs[0], | |
| &yDivs[1], &errorMsg, &numYDivs, true) != NO_ERROR) { | |
| errorPixel = yDivs[0]; | |
| errorEdge = "left"; | |
| goto getout; | |
| } | |
| // Copy patch size data into image... | |
| image->info9Patch.numXDivs = numXDivs; | |
| image->info9Patch.numYDivs = numYDivs; | |
| // Find left and right of padding area... | |
| if (get_horizontal_ticks(image->rows[H-1], W, transparent, false, &image->info9Patch.paddingLeft, | |
| &image->info9Patch.paddingRight, &errorMsg, NULL, false) != NO_ERROR) { | |
| errorPixel = image->info9Patch.paddingLeft; | |
| errorEdge = "bottom"; | |
| goto getout; | |
| } | |
| // Find top and bottom of padding area... | |
| if (get_vertical_ticks(image->rows, (W-1)*4, H, transparent, false, &image->info9Patch.paddingTop, | |
| &image->info9Patch.paddingBottom, &errorMsg, NULL, false) != NO_ERROR) { | |
| errorPixel = image->info9Patch.paddingTop; | |
| errorEdge = "right"; | |
| goto getout; | |
| } | |
| // Find left and right of layout padding... | |
| get_horizontal_layout_bounds_ticks(image->rows[H-1], W, transparent, false, | |
| &image->layoutBoundsLeft, | |
| &image->layoutBoundsRight, &errorMsg); | |
| get_vertical_layout_bounds_ticks(image->rows, (W-1)*4, H, transparent, false, | |
| &image->layoutBoundsTop, | |
| &image->layoutBoundsBottom, &errorMsg); | |
| image->haveLayoutBounds = image->layoutBoundsLeft != 0 | |
| || image->layoutBoundsRight != 0 | |
| || image->layoutBoundsTop != 0 | |
| || image->layoutBoundsBottom != 0; | |
| if (image->haveLayoutBounds) { | |
| if (kIsDebug) { | |
| printf("layoutBounds=%d %d %d %d\n", image->layoutBoundsLeft, image->layoutBoundsTop, | |
| image->layoutBoundsRight, image->layoutBoundsBottom); | |
| } | |
| } | |
| // use opacity of pixels to estimate the round rect outline | |
| get_outline(image); | |
| // If padding is not yet specified, take values from size. | |
| if (image->info9Patch.paddingLeft < 0) { | |
| image->info9Patch.paddingLeft = xDivs[0]; | |
| image->info9Patch.paddingRight = W - 2 - xDivs[1]; | |
| } else { | |
| // Adjust value to be correct! | |
| image->info9Patch.paddingRight = W - 2 - image->info9Patch.paddingRight; | |
| } | |
| if (image->info9Patch.paddingTop < 0) { | |
| image->info9Patch.paddingTop = yDivs[0]; | |
| image->info9Patch.paddingBottom = H - 2 - yDivs[1]; | |
| } else { | |
| // Adjust value to be correct! | |
| image->info9Patch.paddingBottom = H - 2 - image->info9Patch.paddingBottom; | |
| } | |
| if (kIsDebug) { | |
| printf("Size ticks for %s: x0=%d, x1=%d, y0=%d, y1=%d\n", imageName, | |
| xDivs[0], xDivs[1], | |
| yDivs[0], yDivs[1]); | |
| printf("padding ticks for %s: l=%d, r=%d, t=%d, b=%d\n", imageName, | |
| image->info9Patch.paddingLeft, image->info9Patch.paddingRight, | |
| image->info9Patch.paddingTop, image->info9Patch.paddingBottom); | |
| } | |
| // Remove frame from image. | |
| image->rows = (png_bytepp)malloc((H-2) * sizeof(png_bytep)); | |
| for (i=0; i<(H-2); i++) { | |
| image->rows[i] = image->allocRows[i+1]; | |
| memmove(image->rows[i], image->rows[i]+4, (W-2)*4); | |
| } | |
| image->width -= 2; | |
| W = image->width; | |
| image->height -= 2; | |
| H = image->height; | |
| // Figure out the number of rows and columns in the N-patch | |
| numCols = numXDivs + 1; | |
| if (xDivs[0] == 0) { // Column 1 is strechable | |
| numCols--; | |
| } | |
| if (xDivs[numXDivs - 1] == W) { | |
| numCols--; | |
| } | |
| numRows = numYDivs + 1; | |
| if (yDivs[0] == 0) { // Row 1 is strechable | |
| numRows--; | |
| } | |
| if (yDivs[numYDivs - 1] == H) { | |
| numRows--; | |
| } | |
| // Make sure the amount of rows and columns will fit in the number of | |
| // colors we can use in the 9-patch format. | |
| if (numRows * numCols > 0x7F) { | |
| errorMsg = "Too many rows and columns in 9-patch perimeter"; | |
| goto getout; | |
| } | |
| numColors = numRows * numCols; | |
| image->info9Patch.numColors = numColors; | |
| image->colors = (uint32_t*)malloc(numColors * sizeof(uint32_t)); | |
| // Fill in color information for each patch. | |
| uint32_t c; | |
| top = 0; | |
| // The first row always starts with the top being at y=0 and the bottom | |
| // being either yDivs[1] (if yDivs[0]=0) of yDivs[0]. In the former case | |
| // the first row is stretchable along the Y axis, otherwise it is fixed. | |
| // The last row always ends with the bottom being bitmap.height and the top | |
| // being either yDivs[numYDivs-2] (if yDivs[numYDivs-1]=bitmap.height) or | |
| // yDivs[numYDivs-1]. In the former case the last row is stretchable along | |
| // the Y axis, otherwise it is fixed. | |
| // | |
| // The first and last columns are similarly treated with respect to the X | |
| // axis. | |
| // | |
| // The above is to help explain some of the special casing that goes on the | |
| // code below. | |
| // The initial yDiv and whether the first row is considered stretchable or | |
| // not depends on whether yDiv[0] was zero or not. | |
| for (j = (yDivs[0] == 0 ? 1 : 0); | |
| j <= numYDivs && top < H; | |
| j++) { | |
| if (j == numYDivs) { | |
| bottom = H; | |
| } else { | |
| bottom = yDivs[j]; | |
| } | |
| left = 0; | |
| // The initial xDiv and whether the first column is considered | |
| // stretchable or not depends on whether xDiv[0] was zero or not. | |
| for (i = xDivs[0] == 0 ? 1 : 0; | |
| i <= numXDivs && left < W; | |
| i++) { | |
| if (i == numXDivs) { | |
| right = W; | |
| } else { | |
| right = xDivs[i]; | |
| } | |
| c = get_color(image->rows, left, top, right - 1, bottom - 1); | |
| image->colors[colorIndex++] = c; | |
| if (kIsDebug) { | |
| if (c != Res_png_9patch::NO_COLOR) | |
| hasColor = true; | |
| } | |
| left = right; | |
| } | |
| top = bottom; | |
| } | |
| assert(colorIndex == numColors); | |
| for (i=0; i<numColors; i++) { | |
| if (hasColor) { | |
| if (i == 0) printf("Colors in %s:\n ", imageName); | |
| printf(" #%08x", image->colors[i]); | |
| if (i == numColors - 1) printf("\n"); | |
| } | |
| } | |
| getout: | |
| if (errorMsg) { | |
| fprintf(stderr, | |
| "ERROR: 9-patch image %s malformed.\n" | |
| " %s.\n", imageName, errorMsg); | |
| if (errorEdge != NULL) { | |
| if (errorPixel >= 0) { | |
| fprintf(stderr, | |
| " Found at pixel #%d along %s edge.\n", errorPixel, errorEdge); | |
| } else { | |
| fprintf(stderr, | |
| " Found along %s edge.\n", errorEdge); | |
| } | |
| } | |
| return UNKNOWN_ERROR; | |
| } | |
| return NO_ERROR; | |
| } | |
| static void checkNinePatchSerialization(Res_png_9patch* inPatch, void* data) | |
| { | |
| size_t patchSize = inPatch->serializedSize(); | |
| void* newData = malloc(patchSize); | |
| memcpy(newData, data, patchSize); | |
| Res_png_9patch* outPatch = inPatch->deserialize(newData); | |
| // deserialization is done in place, so outPatch == newData | |
| assert(outPatch == newData); | |
| assert(outPatch->numXDivs == inPatch->numXDivs); | |
| assert(outPatch->numYDivs == inPatch->numYDivs); | |
| assert(outPatch->paddingLeft == inPatch->paddingLeft); | |
| assert(outPatch->paddingRight == inPatch->paddingRight); | |
| assert(outPatch->paddingTop == inPatch->paddingTop); | |
| assert(outPatch->paddingBottom == inPatch->paddingBottom); | |
| for (int i = 0; i < outPatch->numXDivs; i++) { | |
| assert(outPatch->getXDivs()[i] == inPatch->getXDivs()[i]); | |
| } | |
| for (int i = 0; i < outPatch->numYDivs; i++) { | |
| assert(outPatch->getYDivs()[i] == inPatch->getYDivs()[i]); | |
| } | |
| for (int i = 0; i < outPatch->numColors; i++) { | |
| assert(outPatch->getColors()[i] == inPatch->getColors()[i]); | |
| } | |
| free(newData); | |
| } | |
| static void dump_image(int w, int h, png_bytepp rows, int color_type) | |
| { | |
| int i, j, rr, gg, bb, aa; | |
| int bpp; | |
| if (color_type == PNG_COLOR_TYPE_PALETTE || color_type == PNG_COLOR_TYPE_GRAY) { | |
| bpp = 1; | |
| } else if (color_type == PNG_COLOR_TYPE_GRAY_ALPHA) { | |
| bpp = 2; | |
| } else if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA) { | |
| // We use a padding byte even when there is no alpha | |
| bpp = 4; | |
| } else { | |
| printf("Unknown color type %d.\n", color_type); | |
| return; | |
| } | |
| for (j = 0; j < h; j++) { | |
| png_bytep row = rows[j]; | |
| for (i = 0; i < w; i++) { | |
| rr = row[0]; | |
| gg = row[1]; | |
| bb = row[2]; | |
| aa = row[3]; | |
| row += bpp; | |
| if (i == 0) { | |
| printf("Row %d:", j); | |
| } | |
| switch (bpp) { | |
| case 1: | |
| printf(" (%d)", rr); | |
| break; | |
| case 2: | |
| printf(" (%d %d", rr, gg); | |
| break; | |
| case 3: | |
| printf(" (%d %d %d)", rr, gg, bb); | |
| break; | |
| case 4: | |
| printf(" (%d %d %d %d)", rr, gg, bb, aa); | |
| break; | |
| } | |
| if (i == (w - 1)) { | |
| printf("\n"); | |
| } | |
| } | |
| } | |
| } | |
| #define MAX(a,b) ((a)>(b)?(a):(b)) | |
| #define ABS(a) ((a)<0?-(a):(a)) | |
| static void analyze_image(const char *imageName, image_info &imageInfo, int grayscaleTolerance, | |
| png_colorp rgbPalette, png_bytep alphaPalette, | |
| int *paletteEntries, int *alphaPaletteEntries, bool *hasTransparency, | |
| int *colorType, png_bytepp outRows) | |
| { | |
| int w = imageInfo.width; | |
| int h = imageInfo.height; | |
| int i, j, rr, gg, bb, aa, idx;; | |
| uint32_t opaqueColors[256], alphaColors[256]; | |
| uint32_t col; | |
| int numOpaqueColors = 0, numAlphaColors = 0; | |
| int maxGrayDeviation = 0; | |
| bool isOpaque = true; | |
| bool isPalette = true; | |
| bool isGrayscale = true; | |
| // Scan the entire image and determine if: | |
| // 1. Every pixel has R == G == B (grayscale) | |
| // 2. Every pixel has A == 255 (opaque) | |
| // 3. There are no more than 256 distinct RGBA colors | |
| // We will track opaque colors separately from colors with | |
| // alpha. This allows us to reencode the color table more | |
| // efficiently (color tables entries without a corresponding | |
| // alpha value are assumed to be opaque). | |
| if (kIsDebug) { | |
| printf("Initial image data:\n"); | |
| dump_image(w, h, imageInfo.rows, PNG_COLOR_TYPE_RGB_ALPHA); | |
| } | |
| for (j = 0; j < h; j++) { | |
| png_bytep row = imageInfo.rows[j]; | |
| png_bytep out = outRows[j]; | |
| for (i = 0; i < w; i++) { | |
| // Make sure any zero alpha pixels are fully zeroed. On average, | |
| // each of our PNG assets seem to have about four distinct pixels | |
| // with zero alpha. | |
| // There are several advantages to setting these to zero: | |
| // (1) Images are more likely able to be encodable with a palette. | |
| // (2) Image palettes will be smaller. | |
| // (3) Premultiplied and unpremultiplied PNG decodes can skip | |
| // writing zeros to memory, often saving significant numbers | |
| // of memory pages. | |
| aa = *(row + 3); | |
| if (aa == 0) { | |
| rr = 0; | |
| gg = 0; | |
| bb = 0; | |
| // Also set red, green, and blue to zero in "row". If we later | |
| // decide to encode the PNG as RGB or RGBA, we will use the | |
| // values stored there. | |
| *(row) = 0; | |
| *(row + 1) = 0; | |
| *(row + 2) = 0; | |
| } else { | |
| rr = *(row); | |
| gg = *(row + 1); | |
| bb = *(row + 2); | |
| } | |
| row += 4; | |
| int odev = maxGrayDeviation; | |
| maxGrayDeviation = MAX(ABS(rr - gg), maxGrayDeviation); | |
| maxGrayDeviation = MAX(ABS(gg - bb), maxGrayDeviation); | |
| maxGrayDeviation = MAX(ABS(bb - rr), maxGrayDeviation); | |
| if (maxGrayDeviation > odev) { | |
| if (kIsDebug) { | |
| printf("New max dev. = %d at pixel (%d, %d) = (%d %d %d %d)\n", | |
| maxGrayDeviation, i, j, rr, gg, bb, aa); | |
| } | |
| } | |
| // Check if image is really grayscale | |
| if (isGrayscale) { | |
| if (rr != gg || rr != bb) { | |
| if (kIsDebug) { | |
| printf("Found a non-gray pixel at %d, %d = (%d %d %d %d)\n", | |
| i, j, rr, gg, bb, aa); | |
| } | |
| isGrayscale = false; | |
| } | |
| } | |
| // Check if image is really opaque | |
| if (isOpaque) { | |
| if (aa != 0xff) { | |
| if (kIsDebug) { | |
| printf("Found a non-opaque pixel at %d, %d = (%d %d %d %d)\n", | |
| i, j, rr, gg, bb, aa); | |
| } | |
| isOpaque = false; | |
| } | |
| } | |
| // Check if image is really <= 256 colors | |
| if (isPalette) { | |
| col = (uint32_t) ((rr << 24) | (gg << 16) | (bb << 8) | aa); | |
| bool match = false; | |
| if (aa == 0xff) { | |
| for (idx = 0; idx < numOpaqueColors; idx++) { | |
| if (opaqueColors[idx] == col) { | |
| match = true; | |
| break; | |
| } | |
| } | |
| if (!match) { | |
| if (numOpaqueColors < 256) { | |
| opaqueColors[numOpaqueColors] = col; | |
| } | |
| numOpaqueColors++; | |
| } | |
| // Write the palette index for the pixel to outRows optimistically. | |
| // We might overwrite it later if we decide to encode as gray or | |
| // gray + alpha. We may also need to overwrite it when we combine | |
| // into a single palette. | |
| *out++ = idx; | |
| } else { | |
| for (idx = 0; idx < numAlphaColors; idx++) { | |
| if (alphaColors[idx] == col) { | |
| match = true; | |
| break; | |
| } | |
| } | |
| if (!match) { | |
| if (numAlphaColors < 256) { | |
| alphaColors[numAlphaColors] = col; | |
| } | |
| numAlphaColors++; | |
| } | |
| // Write the palette index for the pixel to outRows optimistically. | |
| // We might overwrite it later if we decide to encode as gray or | |
| // gray + alpha. | |
| *out++ = idx; | |
| } | |
| if (numOpaqueColors + numAlphaColors > 256) { | |
| if (kIsDebug) { | |
| printf("Found 257th color at %d, %d\n", i, j); | |
| } | |
| isPalette = false; | |
| } | |
| } | |
| } | |
| } | |
| // If we decide to encode the image using a palette, we will reset these counts | |
| // to the appropriate values later. Initializing them here avoids compiler | |
| // complaints about uses of possibly uninitialized variables. | |
| *paletteEntries = 0; | |
| *alphaPaletteEntries = 0; | |
| *hasTransparency = !isOpaque; | |
| int paletteSize = w * h + 3 * numOpaqueColors + 4 * numAlphaColors; | |
| int bpp = isOpaque ? 3 : 4; | |
| if (kIsDebug) { | |
| printf("isGrayscale = %s\n", isGrayscale ? "true" : "false"); | |
| printf("isOpaque = %s\n", isOpaque ? "true" : "false"); | |
| printf("isPalette = %s\n", isPalette ? "true" : "false"); | |
| printf("Size w/ palette = %d, gray+alpha = %d, rgb(a) = %d\n", | |
| paletteSize, 2 * w * h, bpp * w * h); | |
| printf("Max gray deviation = %d, tolerance = %d\n", maxGrayDeviation, grayscaleTolerance); | |
| } | |
| // Choose the best color type for the image. | |
| // 1. Opaque gray - use COLOR_TYPE_GRAY at 1 byte/pixel | |
| // 2. Gray + alpha - use COLOR_TYPE_PALETTE if the number of distinct combinations | |
| // is sufficiently small, otherwise use COLOR_TYPE_GRAY_ALPHA | |
| // 3. RGB(A) - use COLOR_TYPE_PALETTE if the number of distinct colors is sufficiently | |
| // small, otherwise use COLOR_TYPE_RGB{_ALPHA} | |
| if (isGrayscale) { | |
| if (isOpaque) { | |
| *colorType = PNG_COLOR_TYPE_GRAY; // 1 byte/pixel | |
| } else { | |
| // Use a simple heuristic to determine whether using a palette will | |
| // save space versus using gray + alpha for each pixel. | |
| // This doesn't take into account chunk overhead, filtering, LZ | |
| // compression, etc. | |
| if (isPalette && (paletteSize < 2 * w * h)) { | |
| *colorType = PNG_COLOR_TYPE_PALETTE; // 1 byte/pixel + 4 bytes/color | |
| } else { | |
| *colorType = PNG_COLOR_TYPE_GRAY_ALPHA; // 2 bytes per pixel | |
| } | |
| } | |
| } else if (isPalette && (paletteSize < bpp * w * h)) { | |
| *colorType = PNG_COLOR_TYPE_PALETTE; | |
| } else { | |
| if (maxGrayDeviation <= grayscaleTolerance) { | |
| printf("%s: forcing image to gray (max deviation = %d)\n", imageName, maxGrayDeviation); | |
| *colorType = isOpaque ? PNG_COLOR_TYPE_GRAY : PNG_COLOR_TYPE_GRAY_ALPHA; | |
| } else { | |
| *colorType = isOpaque ? PNG_COLOR_TYPE_RGB : PNG_COLOR_TYPE_RGB_ALPHA; | |
| } | |
| } | |
| // Perform postprocessing of the image or palette data based on the final | |
| // color type chosen | |
| if (*colorType == PNG_COLOR_TYPE_PALETTE) { | |
| // Combine the alphaColors and the opaqueColors into a single palette. | |
| // The alphaColors must be at the start of the palette. | |
| uint32_t* colors = alphaColors; | |
| memcpy(colors + numAlphaColors, opaqueColors, 4 * numOpaqueColors); | |
| // Fix the indices of the opaque colors in the image. | |
| for (j = 0; j < h; j++) { | |
| png_bytep row = imageInfo.rows[j]; | |
| png_bytep out = outRows[j]; | |
| for (i = 0; i < w; i++) { | |
| uint32_t pixel = ((uint32_t*) row)[i]; | |
| if (pixel >> 24 == 0xFF) { | |
| out[i] += numAlphaColors; | |
| } | |
| } | |
| } | |
| // Create separate RGB and Alpha palettes and set the number of colors | |
| int numColors = numOpaqueColors + numAlphaColors; | |
| *paletteEntries = numColors; | |
| *alphaPaletteEntries = numAlphaColors; | |
| // Create the RGB and alpha palettes | |
| for (int idx = 0; idx < numColors; idx++) { | |
| col = colors[idx]; | |
| rgbPalette[idx].red = (png_byte) ((col >> 24) & 0xff); | |
| rgbPalette[idx].green = (png_byte) ((col >> 16) & 0xff); | |
| rgbPalette[idx].blue = (png_byte) ((col >> 8) & 0xff); | |
| if (idx < numAlphaColors) { | |
| alphaPalette[idx] = (png_byte) (col & 0xff); | |
| } | |
| } | |
| } else if (*colorType == PNG_COLOR_TYPE_GRAY || *colorType == PNG_COLOR_TYPE_GRAY_ALPHA) { | |
| // If the image is gray or gray + alpha, compact the pixels into outRows | |
| for (j = 0; j < h; j++) { | |
| png_bytep row = imageInfo.rows[j]; | |
| png_bytep out = outRows[j]; | |
| for (i = 0; i < w; i++) { | |
| rr = *row++; | |
| gg = *row++; | |
| bb = *row++; | |
| aa = *row++; | |
| if (isGrayscale) { | |
| *out++ = rr; | |
| } else { | |
| *out++ = (png_byte) (rr * 0.2126f + gg * 0.7152f + bb * 0.0722f); | |
| } | |
| if (!isOpaque) { | |
| *out++ = aa; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| static void write_png(const char* imageName, | |
| png_structp write_ptr, png_infop write_info, | |
| image_info& imageInfo, const Bundle* bundle) | |
| { | |
| png_uint_32 width, height; | |
| int color_type; | |
| int bit_depth, interlace_type, compression_type; | |
| int i; | |
| png_unknown_chunk unknowns[3]; | |
| unknowns[0].data = NULL; | |
| unknowns[1].data = NULL; | |
| unknowns[2].data = NULL; | |
| png_bytepp outRows = (png_bytepp) malloc((int) imageInfo.height * sizeof(png_bytep)); | |
| if (outRows == (png_bytepp) 0) { | |
| printf("Can't allocate output buffer!\n"); | |
| exit(1); | |
| } | |
| for (i = 0; i < (int) imageInfo.height; i++) { | |
| outRows[i] = (png_bytep) malloc(2 * (int) imageInfo.width); | |
| if (outRows[i] == (png_bytep) 0) { | |
| printf("Can't allocate output buffer!\n"); | |
| exit(1); | |
| } | |
| } | |
| png_set_compression_level(write_ptr, Z_BEST_COMPRESSION); | |
| if (kIsDebug) { | |
| printf("Writing image %s: w = %d, h = %d\n", imageName, | |
| (int) imageInfo.width, (int) imageInfo.height); | |
| } | |
| png_color rgbPalette[256]; | |
| png_byte alphaPalette[256]; | |
| bool hasTransparency; | |
| int paletteEntries, alphaPaletteEntries; | |
| int grayscaleTolerance = bundle->getGrayscaleTolerance(); | |
| analyze_image(imageName, imageInfo, grayscaleTolerance, rgbPalette, alphaPalette, | |
| &paletteEntries, &alphaPaletteEntries, &hasTransparency, &color_type, outRows); | |
| // Legacy versions of aapt would always encode 9patch PNGs as RGBA. This had the unintended | |
| // benefit of working around a bug decoding paletted images in Android 4.1. | |
| // https://code.google.com/p/android/issues/detail?id=34619 | |
| // | |
| // If SDK_JELLY_BEAN is supported, we need to avoid a paletted encoding in order to not expose | |
| // this bug. | |
| if (!bundle->isMinSdkAtLeast(SDK_JELLY_BEAN_MR1)) { | |
| if (imageInfo.is9Patch && PNG_COLOR_TYPE_PALETTE == color_type) { | |
| if (hasTransparency) { | |
| color_type = PNG_COLOR_TYPE_RGB_ALPHA; | |
| } else { | |
| color_type = PNG_COLOR_TYPE_RGB; | |
| } | |
| } | |
| } | |
| if (kIsDebug) { | |
| switch (color_type) { | |
| case PNG_COLOR_TYPE_PALETTE: | |
| printf("Image %s has %d colors%s, using PNG_COLOR_TYPE_PALETTE\n", | |
| imageName, paletteEntries, | |
| hasTransparency ? " (with alpha)" : ""); | |
| break; | |
| case PNG_COLOR_TYPE_GRAY: | |
| printf("Image %s is opaque gray, using PNG_COLOR_TYPE_GRAY\n", imageName); | |
| break; | |
| case PNG_COLOR_TYPE_GRAY_ALPHA: | |
| printf("Image %s is gray + alpha, using PNG_COLOR_TYPE_GRAY_ALPHA\n", imageName); | |
| break; | |
| case PNG_COLOR_TYPE_RGB: | |
| printf("Image %s is opaque RGB, using PNG_COLOR_TYPE_RGB\n", imageName); | |
| break; | |
| case PNG_COLOR_TYPE_RGB_ALPHA: | |
| printf("Image %s is RGB + alpha, using PNG_COLOR_TYPE_RGB_ALPHA\n", imageName); | |
| break; | |
| } | |
| } | |
| png_set_IHDR(write_ptr, write_info, imageInfo.width, imageInfo.height, | |
| 8, color_type, PNG_INTERLACE_NONE, | |
| PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); | |
| if (color_type == PNG_COLOR_TYPE_PALETTE) { | |
| png_set_PLTE(write_ptr, write_info, rgbPalette, paletteEntries); | |
| if (hasTransparency) { | |
| png_set_tRNS(write_ptr, write_info, alphaPalette, alphaPaletteEntries, | |
| (png_color_16p) 0); | |
| } | |
| png_set_filter(write_ptr, 0, PNG_NO_FILTERS); | |
| } else { | |
| png_set_filter(write_ptr, 0, PNG_ALL_FILTERS); | |
| } | |
| if (imageInfo.is9Patch) { | |
| int chunk_count = 2 + (imageInfo.haveLayoutBounds ? 1 : 0); | |
| int p_index = imageInfo.haveLayoutBounds ? 2 : 1; | |
| int b_index = 1; | |
| int o_index = 0; | |
| // Chunks ordered thusly because older platforms depend on the base 9 patch data being last | |
| png_byte *chunk_names = imageInfo.haveLayoutBounds | |
| ? (png_byte*)"npOl\0npLb\0npTc\0" | |
| : (png_byte*)"npOl\0npTc"; | |
| // base 9 patch data | |
| if (kIsDebug) { | |
| printf("Adding 9-patch info...\n"); | |
| } | |
| memcpy((char*)unknowns[p_index].name, "npTc", 5); | |
| unknowns[p_index].data = (png_byte*)imageInfo.serialize9patch(); | |
| unknowns[p_index].size = imageInfo.info9Patch.serializedSize(); | |
| // TODO: remove the check below when everything works | |
| checkNinePatchSerialization(&imageInfo.info9Patch, unknowns[p_index].data); | |
| // automatically generated 9 patch outline data | |
| int chunk_size = sizeof(png_uint_32) * 6; | |
| memcpy((char*)unknowns[o_index].name, "npOl", 5); | |
| unknowns[o_index].data = (png_byte*) calloc(chunk_size, 1); | |
| png_byte outputData[chunk_size]; | |
| memcpy(&outputData, &imageInfo.outlineInsetsLeft, 4 * sizeof(png_uint_32)); | |
| ((float*) outputData)[4] = imageInfo.outlineRadius; | |
| ((png_uint_32*) outputData)[5] = imageInfo.outlineAlpha; | |
| memcpy(unknowns[o_index].data, &outputData, chunk_size); | |
| unknowns[o_index].size = chunk_size; | |
| // optional optical inset / layout bounds data | |
| if (imageInfo.haveLayoutBounds) { | |
| int chunk_size = sizeof(png_uint_32) * 4; | |
| memcpy((char*)unknowns[b_index].name, "npLb", 5); | |
| unknowns[b_index].data = (png_byte*) calloc(chunk_size, 1); | |
| memcpy(unknowns[b_index].data, &imageInfo.layoutBoundsLeft, chunk_size); | |
| unknowns[b_index].size = chunk_size; | |
| } | |
| for (int i = 0; i < chunk_count; i++) { | |
| unknowns[i].location = PNG_HAVE_IHDR; | |
| } | |
| png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS, | |
| chunk_names, chunk_count); | |
| png_set_unknown_chunks(write_ptr, write_info, unknowns, chunk_count); | |
| } | |
| png_write_info(write_ptr, write_info); | |
| png_bytepp rows; | |
| if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA) { | |
| if (color_type == PNG_COLOR_TYPE_RGB) { | |
| png_set_filler(write_ptr, 0, PNG_FILLER_AFTER); | |
| } | |
| rows = imageInfo.rows; | |
| } else { | |
| rows = outRows; | |
| } | |
| png_write_image(write_ptr, rows); | |
| if (kIsDebug) { | |
| printf("Final image data:\n"); | |
| dump_image(imageInfo.width, imageInfo.height, rows, color_type); | |
| } | |
| png_write_end(write_ptr, write_info); | |
| for (i = 0; i < (int) imageInfo.height; i++) { | |
| free(outRows[i]); | |
| } | |
| free(outRows); | |
| free(unknowns[0].data); | |
| free(unknowns[1].data); | |
| free(unknowns[2].data); | |
| png_get_IHDR(write_ptr, write_info, &width, &height, | |
| &bit_depth, &color_type, &interlace_type, | |
| &compression_type, NULL); | |
| if (kIsDebug) { | |
| printf("Image written: w=%d, h=%d, d=%d, colors=%d, inter=%d, comp=%d\n", | |
| (int)width, (int)height, bit_depth, color_type, interlace_type, | |
| compression_type); | |
| } | |
| } | |
| static bool read_png_protected(png_structp read_ptr, String8& printableName, png_infop read_info, | |
| const sp<AaptFile>& file, FILE* fp, image_info* imageInfo) { | |
| if (setjmp(png_jmpbuf(read_ptr))) { | |
| return false; | |
| } | |
| png_init_io(read_ptr, fp); | |
| read_png(printableName.c_str(), read_ptr, read_info, imageInfo); | |
| const size_t nameLen = file->getPath().length(); | |
| if (nameLen > 6) { | |
| const char* name = file->getPath().c_str(); | |
| if (name[nameLen-5] == '9' && name[nameLen-6] == '.') { | |
| if (do_9patch(printableName.c_str(), imageInfo) != NO_ERROR) { | |
| return false; | |
| } | |
| } | |
| } | |
| return true; | |
| } | |
| static bool write_png_protected(png_structp write_ptr, String8& printableName, png_infop write_info, | |
| image_info* imageInfo, const Bundle* bundle) { | |
| if (setjmp(png_jmpbuf(write_ptr))) { | |
| return false; | |
| } | |
| write_png(printableName.c_str(), write_ptr, write_info, *imageInfo, bundle); | |
| return true; | |
| } | |
| status_t preProcessImage(const Bundle* bundle, const sp<AaptAssets>& /* assets */, | |
| const sp<AaptFile>& file, String8* /* outNewLeafName */) | |
| { | |
| String8 ext(getPathExtension(file->getPath())); | |
| // We currently only process PNG images. | |
| if (strcmp(ext.c_str(), ".png") != 0) { | |
| return NO_ERROR; | |
| } | |
| // Example of renaming a file: | |
| //*outNewLeafName = file->getPath().getBasePath().getFileName(); | |
| //outNewLeafName->append(".nupng"); | |
| String8 printableName(file->getPrintableSource()); | |
| if (bundle->getVerbose()) { | |
| printf("Processing image: %s\n", printableName.c_str()); | |
| } | |
| png_structp read_ptr = NULL; | |
| png_infop read_info = NULL; | |
| FILE* fp; | |
| image_info imageInfo; | |
| png_structp write_ptr = NULL; | |
| png_infop write_info = NULL; | |
| status_t error = UNKNOWN_ERROR; | |
| fp = fopen(file->getSourceFile().c_str(), "rb"); | |
| if (fp == NULL) { | |
| fprintf(stderr, "%s: ERROR: Unable to open PNG file\n", printableName.c_str()); | |
| goto bail; | |
| } | |
| read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, (png_error_ptr)NULL, | |
| (png_error_ptr)NULL); | |
| if (!read_ptr) { | |
| goto bail; | |
| } | |
| read_info = png_create_info_struct(read_ptr); | |
| if (!read_info) { | |
| goto bail; | |
| } | |
| if (!read_png_protected(read_ptr, printableName, read_info, file, fp, &imageInfo)) { | |
| goto bail; | |
| } | |
| write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, (png_error_ptr)NULL, | |
| (png_error_ptr)NULL); | |
| if (!write_ptr) | |
| { | |
| goto bail; | |
| } | |
| write_info = png_create_info_struct(write_ptr); | |
| if (!write_info) | |
| { | |
| goto bail; | |
| } | |
| png_set_write_fn(write_ptr, (void*)file.get(), | |
| png_write_aapt_file, png_flush_aapt_file); | |
| if (!write_png_protected(write_ptr, printableName, write_info, &imageInfo, bundle)) { | |
| goto bail; | |
| } | |
| error = NO_ERROR; | |
| if (bundle->getVerbose()) { | |
| fseek(fp, 0, SEEK_END); | |
| size_t oldSize = (size_t)ftell(fp); | |
| size_t newSize = file->getSize(); | |
| float factor = ((float)newSize)/oldSize; | |
| int percent = (int)(factor*100); | |
| printf(" (processed image %s: %d%% size of source)\n", printableName.c_str(), percent); | |
| } | |
| bail: | |
| if (read_ptr) { | |
| png_destroy_read_struct(&read_ptr, &read_info, (png_infopp)NULL); | |
| } | |
| if (fp) { | |
| fclose(fp); | |
| } | |
| if (write_ptr) { | |
| png_destroy_write_struct(&write_ptr, &write_info); | |
| } | |
| if (error != NO_ERROR) { | |
| fprintf(stderr, "ERROR: Failure processing PNG image %s\n", | |
| file->getPrintableSource().c_str()); | |
| } | |
| return error; | |
| } | |
| status_t preProcessImageToCache(const Bundle* bundle, const String8& source, const String8& dest) | |
| { | |
| png_structp read_ptr = NULL; | |
| png_infop read_info = NULL; | |
| FILE* fp; | |
| image_info imageInfo; | |
| png_structp write_ptr = NULL; | |
| png_infop write_info = NULL; | |
| status_t error = UNKNOWN_ERROR; | |
| if (bundle->getVerbose()) { | |
| printf("Processing image to cache: %s => %s\n", source.c_str(), dest.c_str()); | |
| } | |
| // Get a file handler to read from | |
| fp = fopen(source.c_str(),"rb"); | |
| if (fp == NULL) { | |
| fprintf(stderr, "%s ERROR: Unable to open PNG file\n", source.c_str()); | |
| return error; | |
| } | |
| // Call libpng to get a struct to read image data into | |
| read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); | |
| if (!read_ptr) { | |
| fclose(fp); | |
| png_destroy_read_struct(&read_ptr, &read_info,NULL); | |
| return error; | |
| } | |
| // Call libpng to get a struct to read image info into | |
| read_info = png_create_info_struct(read_ptr); | |
| if (!read_info) { | |
| fclose(fp); | |
| png_destroy_read_struct(&read_ptr, &read_info,NULL); | |
| return error; | |
| } | |
| // Set a jump point for libpng to long jump back to on error | |
| if (setjmp(png_jmpbuf(read_ptr))) { | |
| fclose(fp); | |
| png_destroy_read_struct(&read_ptr, &read_info,NULL); | |
| return error; | |
| } | |
| // Set up libpng to read from our file. | |
| png_init_io(read_ptr,fp); | |
| // Actually read data from the file | |
| read_png(source.c_str(), read_ptr, read_info, &imageInfo); | |
| // We're done reading so we can clean up | |
| // Find old file size before releasing handle | |
| fseek(fp, 0, SEEK_END); | |
| size_t oldSize = (size_t)ftell(fp); | |
| fclose(fp); | |
| png_destroy_read_struct(&read_ptr, &read_info,NULL); | |
| // Check to see if we're dealing with a 9-patch | |
| // If we are, process appropriately | |
| if (getPathExtension(getBasePath(source)) == ".9") { | |
| if (do_9patch(source.c_str(), &imageInfo) != NO_ERROR) { | |
| return error; | |
| } | |
| } | |
| // Call libpng to create a structure to hold the processed image data | |
| // that can be written to disk | |
| write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); | |
| if (!write_ptr) { | |
| png_destroy_write_struct(&write_ptr, &write_info); | |
| return error; | |
| } | |
| // Call libpng to create a structure to hold processed image info that can | |
| // be written to disk | |
| write_info = png_create_info_struct(write_ptr); | |
| if (!write_info) { | |
| png_destroy_write_struct(&write_ptr, &write_info); | |
| return error; | |
| } | |
| // Open up our destination file for writing | |
| fp = fopen(dest.c_str(), "wb"); | |
| if (!fp) { | |
| fprintf(stderr, "%s ERROR: Unable to open PNG file\n", dest.c_str()); | |
| png_destroy_write_struct(&write_ptr, &write_info); | |
| return error; | |
| } | |
| // Set up libpng to write to our file | |
| png_init_io(write_ptr, fp); | |
| // Set up a jump for libpng to long jump back on on errors | |
| if (setjmp(png_jmpbuf(write_ptr))) { | |
| fclose(fp); | |
| png_destroy_write_struct(&write_ptr, &write_info); | |
| return error; | |
| } | |
| // Actually write out to the new png | |
| write_png(dest.c_str(), write_ptr, write_info, imageInfo, bundle); | |
| if (bundle->getVerbose()) { | |
| // Find the size of our new file | |
| FILE* reader = fopen(dest.c_str(), "rb"); | |
| fseek(reader, 0, SEEK_END); | |
| size_t newSize = (size_t)ftell(reader); | |
| fclose(reader); | |
| float factor = ((float)newSize)/oldSize; | |
| int percent = (int)(factor*100); | |
| printf(" (processed image to cache entry %s: %d%% size of source)\n", | |
| dest.c_str(), percent); | |
| } | |
| //Clean up | |
| fclose(fp); | |
| png_destroy_write_struct(&write_ptr, &write_info); | |
| return NO_ERROR; | |
| } | |
| status_t postProcessImage(const Bundle* bundle, const sp<AaptAssets>& assets, | |
| ResourceTable* table, const sp<AaptFile>& file) | |
| { | |
| String8 ext(getPathExtension(file->getPath())); | |
| // At this point, now that we have all the resource data, all we need to | |
| // do is compile XML files. | |
| if (strcmp(ext.c_str(), ".xml") == 0) { | |
| String16 resourceName(parseResourceName(getPathLeaf(file->getSourceFile()))); | |
| return compileXmlFile(bundle, assets, resourceName, file, table); | |
| } | |
| return NO_ERROR; | |
| } |