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-rw-r--r--minuitwrp/resources.c286
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);
+ }
+}
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