1 files changed, 286 insertions, 0 deletions

diff --git a/minuitwrp/resources.c b/minuitwrp/resources.c
new file mode 100644
index 000000000..ea6a44752
--- /dev/null
+++ b/minuitwrp/resources.c
@@ -0,0 +1,286 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+#include <stdio.h>
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+
+#include <linux/fb.h>
+#include <linux/kd.h>
+
+#include <pixelflinger/pixelflinger.h>
+
+#include <png.h>
+#include <jpeglib.h>
+
+#include "minui.h"
+
+// libpng gives "undefined reference to 'pow'" errors, and I have no
+// idea how to convince the build system to link with -lm.  We don't
+// need this functionality (it's used for gamma adjustment) so provide
+// a dummy implementation to satisfy the linker.
+double pow(double x, double y) {
+    return x;
+}
+
+int res_create_surface_png(const char* name, gr_surface* pSurface) {
+    GGLSurface* surface = NULL;
+    int result = 0;
+    unsigned char header[8];
+    png_structp png_ptr = NULL;
+    png_infop info_ptr = NULL;
+
+    FILE* fp = fopen(name, "rb");
+    if (fp == NULL) {
+        char resPath[256];
+
+        snprintf(resPath, sizeof(resPath)-1, "/res/images/%s.png", name);
+        resPath[sizeof(resPath)-1] = '\0';
+        fp = fopen(resPath, "rb");
+        if (fp == NULL)
+        {
+            result = -1;
+            goto exit;
+        }
+    }
+
+    size_t bytesRead = fread(header, 1, sizeof(header), fp);
+    if (bytesRead != sizeof(header)) {
+        result = -2;
+        goto exit;
+    }
+
+    if (png_sig_cmp(header, 0, sizeof(header))) {
+        result = -3;
+        goto exit;
+    }
+
+    png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+    if (!png_ptr) {
+        result = -4;
+        goto exit;
+    }
+
+    info_ptr = png_create_info_struct(png_ptr);
+    if (!info_ptr) {
+        result = -5;
+        goto exit;
+    }
+
+    if (setjmp(png_jmpbuf(png_ptr))) {
+        result = -6;
+        goto exit;
+    }
+
+    png_set_packing(png_ptr);
+
+    png_init_io(png_ptr, fp);
+    png_set_sig_bytes(png_ptr, sizeof(header));
+    png_read_info(png_ptr, info_ptr);
+
+    size_t width = info_ptr->width;
+    size_t height = info_ptr->height;
+    size_t stride = 4 * width;
+    size_t pixelSize = stride * height;
+
+    int color_type = info_ptr->color_type;
+    int bit_depth = info_ptr->bit_depth;
+    int channels = info_ptr->channels;
+    if (!(bit_depth == 8 &&
+          ((channels == 3 && color_type == PNG_COLOR_TYPE_RGB) ||
+           (channels == 4 && color_type == PNG_COLOR_TYPE_RGBA) ||
+           (channels == 1 && color_type == PNG_COLOR_TYPE_PALETTE)))) {
+        return -7;
+        goto exit;
+    }
+
+    surface = malloc(sizeof(GGLSurface) + pixelSize);
+    if (surface == NULL) {
+        result = -8;
+        goto exit;
+    }
+    unsigned char* pData = (unsigned char*) (surface + 1);
+    surface->version = sizeof(GGLSurface);
+    surface->width = width;
+    surface->height = height;
+    surface->stride = width; /* Yes, pixels, not bytes */
+    surface->data = pData;
+    surface->format = (channels == 3) ?
+            GGL_PIXEL_FORMAT_RGBX_8888 : GGL_PIXEL_FORMAT_RGBA_8888;
+
+    if (color_type == PNG_COLOR_TYPE_PALETTE) {
+        png_set_palette_to_rgb(png_ptr);
+    }
+
+    int y;
+    if (channels < 4) {
+        for (y = 0; y < (int) height; ++y) {
+            unsigned char* pRow = pData + y * stride;
+            png_read_row(png_ptr, pRow, NULL);
+
+            int x;
+            for(x = width - 1; x >= 0; x--) {
+                int sx = x * 3;
+                int dx = x * 4;
+                unsigned char r = pRow[sx];
+                unsigned char g = pRow[sx + 1];
+                unsigned char b = pRow[sx + 2];
+                unsigned char a = 0xff;
+                pRow[dx    ] = r; // r
+                pRow[dx + 1] = g; // g
+                pRow[dx + 2] = b; // b
+                pRow[dx + 3] = a;
+            }
+        }
+    } else {
+        for (y = 0; y < (int) height; ++y) {
+            unsigned char* pRow = pData + y * stride;
+            png_read_row(png_ptr, pRow, NULL);
+        }
+    }
+
+    *pSurface = (gr_surface) surface;
+
+exit:
+    png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+
+    if (fp != NULL) {
+        fclose(fp);
+    }
+    if (result < 0) {
+        if (surface) {
+            free(surface);
+        }
+    }
+    return result;
+}
+
+int res_create_surface_jpg(const char* name, gr_surface* pSurface) {
+    GGLSurface* surface = NULL;
+    int result = 0;
+    struct jpeg_decompress_struct cinfo;
+    struct jpeg_error_mgr jerr;
+
+    FILE* fp = fopen(name, "rb");
+    if (fp == NULL) {
+        char resPath[256];
+
+        snprintf(resPath, sizeof(resPath)-1, "/res/images/%s", name);
+        resPath[sizeof(resPath)-1] = '\0';
+        fp = fopen(resPath, "rb");
+        if (fp == NULL) {
+            result = -1;
+            goto exit;
+        }
+    }
+
+    cinfo.err = jpeg_std_error(&jerr);
+    jpeg_create_decompress(&cinfo);
+
+    /* Specify data source for decompression */
+    jpeg_stdio_src(&cinfo, fp);
+
+    /* Read file header, set default decompression parameters */
+    if (jpeg_read_header(&cinfo, TRUE) != JPEG_HEADER_OK)
+        goto exit;
+
+    /* Start decompressor */
+    (void) jpeg_start_decompress(&cinfo);
+
+    size_t width = cinfo.image_width;
+    size_t height = cinfo.image_height;
+    size_t stride = 4 * width;
+    size_t pixelSize = stride * height;
+
+    surface = malloc(sizeof(GGLSurface) + pixelSize);
+    if (surface == NULL) {
+        result = -8;
+        goto exit;
+    }
+
+    unsigned char* pData = (unsigned char*) (surface + 1);
+    surface->version = sizeof(GGLSurface);
+    surface->width = width;
+    surface->height = height;
+    surface->stride = width; /* Yes, pixels, not bytes */
+    surface->data = pData;
+    surface->format = GGL_PIXEL_FORMAT_RGBX_8888;
+
+    int y;
+    for (y = 0; y < (int) height; ++y) {
+        unsigned char* pRow = pData + y * stride;
+        jpeg_read_scanlines(&cinfo, &pRow, 1);
+
+        int x;
+        for(x = width - 1; x >= 0; x--) {
+            int sx = x * 3;
+            int dx = x * 4;
+            unsigned char r = pRow[sx];
+            unsigned char g = pRow[sx + 1];
+            unsigned char b = pRow[sx + 2];
+            unsigned char a = 0xff;
+            pRow[dx    ] = r; // r
+            pRow[dx + 1] = g; // g
+            pRow[dx + 2] = b; // b
+            pRow[dx + 3] = a;
+        }
+    }
+    *pSurface = (gr_surface) surface;
+
+exit:
+    if (fp != NULL)
+    {
+        if (surface)
+        {
+            (void) jpeg_finish_decompress(&cinfo);
+            if (result < 0)
+            {
+                free(surface);
+            }
+        }
+        jpeg_destroy_decompress(&cinfo);
+        fclose(fp);
+    }
+    return result;
+}
+
+int res_create_surface(const char* name, gr_surface* pSurface) {
+    int ret;
+
+    if (!name)      return -1;
+
+    if (strlen(name) > 4 && strcmp(name + strlen(name) - 4, ".jpg") == 0)
+		return res_create_surface_jpg(name,pSurface);
+
+    ret = res_create_surface_png(name,pSurface);
+    if (ret < 0)
+        ret = res_create_surface_jpg(name,pSurface);
+
+    return ret;
+}
+
+void res_free_surface(gr_surface surface) {
+    GGLSurface* pSurface = (GGLSurface*) surface;
+    if (pSurface) {
+        free(pSurface);
+    }
+}