X-Git-Url: https://git.saurik.com/android/aapt.git/blobdiff_plain/a189615a5671748c348da8ab79042e9e2746eb5e..6d9fc1e5b07f3ae3c459b1b9f5fb3530a7cf5625:/Images.cpp

diff --git a/Images.cpp b/Images.cpp
index a516a5a..ffbe875 100644
--- a/Images.cpp
+++ b/Images.cpp
@@ -44,6 +44,9 @@ struct image_info
             }
             free(allocRows);
         }
+        free(info9Patch.xDivs);
+        free(info9Patch.yDivs);
+        free(info9Patch.colors);
     }
 
     png_uint_32 width;
@@ -332,8 +335,8 @@ static status_t do_9patch(const char* imageName, image_info* image)
     int H = image->height;
     int i, j;
 
-    int maxSizeXDivs = (W / 2 + 1) * sizeof(int32_t);
-    int maxSizeYDivs = (H / 2 + 1) * sizeof(int32_t);
+    int maxSizeXDivs = W * sizeof(int32_t);
+    int maxSizeYDivs = H * sizeof(int32_t);
     int32_t* xDivs = (int32_t*) malloc(maxSizeXDivs);
     int32_t* yDivs = (int32_t*) malloc(maxSizeYDivs);
     uint8_t  numXDivs = 0;
@@ -356,7 +359,7 @@ static status_t do_9patch(const char* imageName, image_info* image)
 
     const char* errorMsg = NULL;
     int errorPixel = -1;
-    const char* errorEdge = "";
+    const char* errorEdge = NULL;
 
     int colorIndex = 0;
 
@@ -460,6 +463,14 @@ static status_t do_9patch(const char* imageName, image_info* image)
     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->info9Patch.colors = (uint32_t*)malloc(numColors * sizeof(uint32_t));
@@ -530,12 +541,14 @@ getout:
         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);
+        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;
     }
@@ -600,10 +613,22 @@ static bool patch_equals(Res_png_9patch& patch1, Res_png_9patch& patch2) {
     return true;
 }
 
-static void dump_image(int w, int h, png_bytepp rows, int bpp)
+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++) {
@@ -640,7 +665,7 @@ static void dump_image(int w, int h, png_bytepp rows, int bpp)
 #define MAX(a,b) ((a)>(b)?(a):(b))
 #define ABS(a)   ((a)<0?-(a):(a))
 
-static void analyze_image(image_info &imageInfo, int grayscaleTolerance,
+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)
@@ -662,7 +687,7 @@ static void analyze_image(image_info &imageInfo, int grayscaleTolerance,
     // 3. There are no more than 256 distinct RGBA colors
 
     // NOISY(printf("Initial image data:\n"));
-    // dump_image(w, h, imageInfo.rows, 4);
+    // dump_image(w, h, imageInfo.rows, PNG_COLOR_TYPE_RGB_ALPHA);
 
     for (j = 0; j < h; j++) {
         png_bytep row = imageInfo.rows[j];
@@ -763,7 +788,7 @@ static void analyze_image(image_info &imageInfo, int grayscaleTolerance,
         *colorType = PNG_COLOR_TYPE_PALETTE;
     } else {
         if (maxGrayDeviation <= grayscaleTolerance) {
-            NOISY(printf("Forcing image to gray (max deviation = %d)\n", maxGrayDeviation));
+            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;
@@ -821,6 +846,7 @@ static void write_png(const char* imageName,
     int i;
 
     png_unknown_chunk unknowns[1];
+    unknowns[0].data = NULL;
 
     png_bytepp outRows = (png_bytepp) malloc((int) imageInfo.height * png_sizeof(png_bytep));
     if (outRows == (png_bytepp) 0) {
@@ -845,8 +871,16 @@ static void write_png(const char* imageName,
     bool hasTransparency;
     int paletteEntries;
 
-    analyze_image(imageInfo, grayscaleTolerance, rgbPalette, alphaPalette,
+    analyze_image(imageName, imageInfo, grayscaleTolerance, rgbPalette, alphaPalette,
                   &paletteEntries, &hasTransparency, &color_type, outRows);
+
+    // If the image is a 9-patch, we need to preserve it as a ARGB file to make
+    // sure the pixels will not be pre-dithered/clamped until we decide they are
+    if (imageInfo.is9Patch && (color_type == PNG_COLOR_TYPE_RGB ||
+            color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_PALETTE)) {
+        color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+    }
+
     switch (color_type) {
     case PNG_COLOR_TYPE_PALETTE:
         NOISY(printf("Image %s has %d colors%s, using PNG_COLOR_TYPE_PALETTE\n",
@@ -910,21 +944,8 @@ static void write_png(const char* imageName,
     }
     png_write_image(write_ptr, rows);
 
-//     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) {
-//         bpp = 4;
-//     } else if (color_type == PNG_COLOR_TYPE_RGB_ALPHA) {
-//         bpp = 4;
-//     } else {
-//         printf("Uknknown color type %d, exiting.\n", color_type);
-//         exit(1);
-//     }
 //     NOISY(printf("Final image data:\n"));
-//     dump_image(imageInfo.width, imageInfo.height, rows, bpp);
+//     dump_image(imageInfo.width, imageInfo.height, rows, color_type);
 
     png_write_end(write_ptr, write_info);
 
@@ -932,6 +953,7 @@ static void write_png(const char* imageName,
         free(outRows[i]);
     }
     free(outRows);
+    free(unknowns[0].data);
 
     png_get_IHDR(write_ptr, write_info, &width, &height,
        &bit_depth, &color_type, &interlace_type,
@@ -958,6 +980,10 @@ status_t preProcessImage(Bundle* bundle, const sp<AaptAssets>& assets,
 
     String8 printableName(file->getPrintableSource());
 
+    if (bundle->getVerbose()) {
+        printf("Processing image: %s\n", printableName.string());
+    }
+
     png_structp read_ptr = NULL;
     png_infop read_info = NULL;
     FILE* fp;
@@ -1058,7 +1084,132 @@ bail:
     return error;
 }
 
+status_t preProcessImageToCache(Bundle* bundle, String8 source, 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.string(), dest.string());
+    }
+
+    // Get a file handler to read from
+    fp = fopen(source.string(),"rb");
+    if (fp == NULL) {
+        fprintf(stderr, "%s ERROR: Unable to open PNG file\n", source.string());
+        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.string(), 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 (source.getBasePath().getPathExtension() == ".9")  {
+        if (do_9patch(source.string(), &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.string(), "wb");
+    if (!fp) {
+        fprintf(stderr, "%s ERROR: Unable to open PNG file\n", dest.string());
+        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.string(), write_ptr, write_info, imageInfo,
+              bundle->getGrayscaleTolerance());
+
+    if (bundle->getVerbose()) {
+        // Find the size of our new file
+        FILE* reader = fopen(dest.string(), "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.string(), percent);
+    }
+
+    //Clean up
+    fclose(fp);
+    png_destroy_write_struct(&write_ptr, &write_info);
+
+    return NO_ERROR;
+}
 
 status_t postProcessImage(const sp<AaptAssets>& assets,
                           ResourceTable* table, const sp<AaptFile>& file)