+++ /dev/null
-//
-// Copyright 2006 The Android Open Source Project
-//
-// Build resource files from raw assets.
-//
-
-#define PNG_INTERNAL
-
-#include "Images.h"
-
-#include <utils/ResourceTypes.h>
-#include <utils/ByteOrder.h>
-
-#include <png.h>
-
-#define NOISY(x) //x
-
-static void
-png_write_aapt_file(png_structp png_ptr, png_bytep data, png_size_t length)
-{
- status_t err = ((AaptFile*)png_ptr->io_ptr)->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), 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);
- }
- }
-
- png_uint_32 width;
- png_uint_32 height;
- png_bytepp rows;
-
- // 9-patch info.
- bool is9Patch;
- Res_png_9patch info9Patch;
-
- png_uint_32 allocHeight;
- png_bytepp allocRows;
-};
-
-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_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_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_read_update_info(read_ptr, read_info);
-
- outImageInfo->rows = (png_bytepp)malloc(
- outImageInfo->height * png_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);
-
- NOISY(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);
-}
-
-static bool is_tick(png_bytep p, bool transparent, const char** outError)
-{
- if (transparent) {
- if (p[3] == 0) {
- return false;
- }
- if (p[3] != 0xff) {
- *outError = "Frame pixels must be either solid or transparent (not intermediate alphas)";
- return false;
- }
- if (p[0] != 0 || p[1] != 0 || p[2] != 0) {
- *outError = "Ticks in transparent frame must be black";
- }
- return true;
- }
-
- if (p[3] != 0xFF) {
- *outError = "White frame must be a solid color (no alpha)";
- }
- if (p[0] == 0xFF && p[1] == 0xFF && p[2] == 0xFF) {
- return false;
- }
- if (p[0] != 0 || p[1] != 0 || p[2] != 0) {
- *outError = "Ticks in white frame must be black";
- return false;
- }
- return true;
-}
-
-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 (is_tick(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 (is_tick(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 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 void select_patch(
- int which, int front, int back, int size, int* start, int* end)
-{
- switch (which) {
- case 0:
- *start = 0;
- *end = front-1;
- break;
- case 1:
- *start = front;
- *end = back-1;
- break;
- case 2:
- *start = back;
- *end = size-1;
- break;
- }
-}
-
-static uint32_t get_color(image_info* image, int hpatch, int vpatch)
-{
- int left, right, top, bottom;
- select_patch(
- hpatch, image->info9Patch.xDivs[0], image->info9Patch.xDivs[1],
- image->width, &left, &right);
- select_patch(
- vpatch, image->info9Patch.yDivs[0], image->info9Patch.yDivs[1],
- image->height, &top, &bottom);
- //printf("Selecting h=%d v=%d: (%d,%d)-(%d,%d)\n",
- // hpatch, vpatch, left, top, right, bottom);
- const uint32_t c = get_color(image->rows, left, top, right, bottom);
- NOISY(printf("Color in (%d,%d)-(%d,%d): #%08x\n", left, top, right, bottom, c));
- return c;
-}
-
-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 / 2 + 1) * sizeof(int32_t);
- int maxSizeYDivs = (H / 2 + 1) * sizeof(int32_t);
- int32_t* xDivs = (int32_t*) malloc(maxSizeXDivs);
- int32_t* 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;
-
- png_bytep p = image->rows[0];
- bool transparent = p[3] == 0;
- bool hasColor = false;
-
- const char* errorMsg = NULL;
- int errorPixel = -1;
- const char* errorEdge = "";
-
- 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;
- }
-
- // 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;
- }
-
- // Copy patch data into image
- image->info9Patch.numXDivs = numXDivs;
- image->info9Patch.numYDivs = numYDivs;
- image->info9Patch.xDivs = xDivs;
- image->info9Patch.yDivs = yDivs;
-
- // 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;
- }
-
- NOISY(printf("Size ticks for %s: x0=%d, x1=%d, y0=%d, y1=%d\n", imageName,
- image->info9Patch.xDivs[0], image->info9Patch.xDivs[1],
- image->info9Patch.yDivs[0], image->info9Patch.yDivs[1]));
- NOISY(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) * png_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--;
- }
- numColors = numRows * numCols;
- image->info9Patch.numColors = numColors;
- image->info9Patch.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->info9Patch.colors[colorIndex++] = c;
- NOISY(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->info9Patch.colors[i]);
- if (i == numColors - 1) printf("\n");
- }
- }
-
- image->is9Patch = true;
- image->info9Patch.deviceToFile();
-
-getout:
- if (errorMsg) {
- fprintf(stderr,
- "ERROR: 9-patch image %s malformed.\n"
- " %s.\n", imageName, errorMsg);
- 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)
-{
- if (sizeof(void*) != sizeof(int32_t)) {
- // can't deserialize on a non-32 bit system
- return;
- }
- 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->xDivs[i] == inPatch->xDivs[i]);
- }
- for (int i = 0; i < outPatch->numYDivs; i++) {
- assert(outPatch->yDivs[i] == inPatch->yDivs[i]);
- }
- for (int i = 0; i < outPatch->numColors; i++) {
- assert(outPatch->colors[i] == inPatch->colors[i]);
- }
- free(newData);
-}
-
-static bool patch_equals(Res_png_9patch& patch1, Res_png_9patch& patch2) {
- if (!(patch1.numXDivs == patch2.numXDivs &&
- patch1.numYDivs == patch2.numYDivs &&
- patch1.numColors == patch2.numColors &&
- patch1.paddingLeft == patch2.paddingLeft &&
- patch1.paddingRight == patch2.paddingRight &&
- patch1.paddingTop == patch2.paddingTop &&
- patch1.paddingBottom == patch2.paddingBottom)) {
- return false;
- }
- for (int i = 0; i < patch1.numColors; i++) {
- if (patch1.colors[i] != patch2.colors[i]) {
- return false;
- }
- }
- for (int i = 0; i < patch1.numXDivs; i++) {
- if (patch1.xDivs[i] != patch2.xDivs[i]) {
- return false;
- }
- }
- for (int i = 0; i < patch1.numYDivs; i++) {
- if (patch1.yDivs[i] != patch2.yDivs[i]) {
- return false;
- }
- }
- return true;
-}
-
-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);
- }
-
- 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)) {
- NOISY(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, 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 colors[256], col;
- int num_colors = 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
-
- // NOISY(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++) {
- rr = *row++;
- gg = *row++;
- bb = *row++;
- aa = *row++;
-
- int odev = maxGrayDeviation;
- maxGrayDeviation = MAX(ABS(rr - gg), maxGrayDeviation);
- maxGrayDeviation = MAX(ABS(gg - bb), maxGrayDeviation);
- maxGrayDeviation = MAX(ABS(bb - rr), maxGrayDeviation);
- if (maxGrayDeviation > odev) {
- NOISY(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) {
- NOISY(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) {
- NOISY(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;
- for (idx = 0; idx < num_colors; idx++) {
- if (colors[idx] == col) {
- match = true;
- break;
- }
- }
-
- // 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 (!match) {
- if (num_colors == 256) {
- NOISY(printf("Found 257th color at %d, %d\n", i, j));
- isPalette = false;
- } else {
- colors[num_colors++] = col;
- }
- }
- }
- }
- }
-
- *paletteEntries = 0;
- *hasTransparency = !isOpaque;
- int bpp = isOpaque ? 3 : 4;
- int paletteSize = w * h + bpp * num_colors;
-
- NOISY(printf("isGrayscale = %s\n", isGrayscale ? "true" : "false"));
- NOISY(printf("isOpaque = %s\n", isOpaque ? "true" : "false"));
- NOISY(printf("isPalette = %s\n", isPalette ? "true" : "false"));
- NOISY(printf("Size w/ palette = %d, gray+alpha = %d, rgb(a) = %d\n",
- paletteSize, 2 * w * h, bpp * w * h));
- NOISY(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) {
- // Create separate RGB and Alpha palettes and set the number of colors
- *paletteEntries = num_colors;
-
- // Create the RGB and alpha palettes
- for (int idx = 0; idx < num_colors; 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);
- 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, int grayscaleTolerance)
-{
- bool optimize = true;
- png_uint_32 width, height;
- int color_type;
- int bit_depth, interlace_type, compression_type;
- int i;
-
- png_unknown_chunk unknowns[1];
-
- png_bytepp outRows = (png_bytepp) malloc((int) imageInfo.height * png_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);
-
- NOISY(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;
-
- analyze_image(imageName, imageInfo, grayscaleTolerance, rgbPalette, alphaPalette,
- &paletteEntries, &hasTransparency, &color_type, outRows);
- switch (color_type) {
- case PNG_COLOR_TYPE_PALETTE:
- NOISY(printf("Image %s has %d colors%s, using PNG_COLOR_TYPE_PALETTE\n",
- imageName, paletteEntries,
- hasTransparency ? " (with alpha)" : ""));
- break;
- case PNG_COLOR_TYPE_GRAY:
- NOISY(printf("Image %s is opaque gray, using PNG_COLOR_TYPE_GRAY\n", imageName));
- break;
- case PNG_COLOR_TYPE_GRAY_ALPHA:
- NOISY(printf("Image %s is gray + alpha, using PNG_COLOR_TYPE_GRAY_ALPHA\n", imageName));
- break;
- case PNG_COLOR_TYPE_RGB:
- NOISY(printf("Image %s is opaque RGB, using PNG_COLOR_TYPE_RGB\n", imageName));
- break;
- case PNG_COLOR_TYPE_RGB_ALPHA:
- NOISY(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, paletteEntries, (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) {
- NOISY(printf("Adding 9-patch info...\n"));
- strcpy((char*)unknowns[0].name, "npTc");
- unknowns[0].data = (png_byte*)imageInfo.info9Patch.serialize();
- unknowns[0].size = imageInfo.info9Patch.serializedSize();
- // TODO: remove the check below when everything works
- checkNinePatchSerialization(&imageInfo.info9Patch, unknowns[0].data);
- png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS,
- (png_byte*)"npTc", 1);
- png_set_unknown_chunks(write_ptr, write_info, unknowns, 1);
- // XXX I can't get this to work without forcibly changing
- // the location to what I want... which apparently is supposed
- // to be a private API, but everything else I have tried results
- // in the location being set to what I -last- wrote so I never
- // get written. :p
- png_set_unknown_chunk_location(write_ptr, write_info, 0, PNG_HAVE_PLTE);
- }
-
- png_write_info(write_ptr, write_info);
-
- png_bytepp rows;
- if (color_type == PNG_COLOR_TYPE_RGB || color_type == PNG_COLOR_TYPE_RGB_ALPHA) {
- png_set_filler(write_ptr, 0, PNG_FILLER_AFTER);
- rows = imageInfo.rows;
- } else {
- rows = outRows;
- }
- png_write_image(write_ptr, rows);
-
-// NOISY(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);
-
- png_get_IHDR(write_ptr, write_info, &width, &height,
- &bit_depth, &color_type, &interlace_type,
- &compression_type, NULL);
-
- NOISY(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));
-}
-
-status_t preProcessImage(Bundle* bundle, const sp<AaptAssets>& assets,
- const sp<AaptFile>& file, String8* outNewLeafName)
-{
- String8 ext(file->getPath().getPathExtension());
-
- // We currently only process PNG images.
- if (strcmp(ext.string(), ".png") != 0) {
- return NO_ERROR;
- }
-
- // Example of renaming a file:
- //*outNewLeafName = file->getPath().getBasePath().getFileName();
- //outNewLeafName->append(".nupng");
-
- String8 printableName(file->getPrintableSource());
-
- 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;
-
- const size_t nameLen = file->getPath().length();
-
- fp = fopen(file->getSourceFile().string(), "rb");
- if (fp == NULL) {
- fprintf(stderr, "%s: ERROR: Unable to open PNG file\n", printableName.string());
- 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 (setjmp(png_jmpbuf(read_ptr))) {
- goto bail;
- }
-
- png_init_io(read_ptr, fp);
-
- read_png(printableName.string(), read_ptr, read_info, &imageInfo);
-
- if (nameLen > 6) {
- const char* name = file->getPath().string();
- if (name[nameLen-5] == '9' && name[nameLen-6] == '.') {
- if (do_9patch(printableName.string(), &imageInfo) != NO_ERROR) {
- 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 (setjmp(png_jmpbuf(write_ptr)))
- {
- goto bail;
- }
-
- write_png(printableName.string(), write_ptr, write_info, imageInfo,
- bundle->getGrayscaleTolerance());
-
- 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.string(), 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().string());
- }
- return error;
-}
-
-
-
-status_t postProcessImage(const sp<AaptAssets>& assets,
- ResourceTable* table, const sp<AaptFile>& file)
-{
- String8 ext(file->getPath().getPathExtension());
-
- // At this point, now that we have all the resource data, all we need to
- // do is compile XML files.
- if (strcmp(ext.string(), ".xml") == 0) {
- return compileXmlFile(assets, file, table);
- }
-
- return NO_ERROR;
-}
projects / android / aapt.git / blobdiff