--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/gui_png.c	Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,222 @@
+/*
+ * GUI PNG files processing
+ *
+ * Copyright (c) 2009 CodeSourcery
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "png.h"
+#include "qemu-common.h"
+#include "gui_common.h"
+#include "gui_png.h"
+
+/*
+int x, y;
+
+int width, height;
+png_byte color_type;
+png_byte bit_depth;
+*/
+
+typedef struct
+{
+    int width;
+    int height;
+    void* image4c; /* in 4 channels */
+} png_image_data_t;
+
+static void abort_(const char * s, ...)
+{
+	va_list args;
+	va_start(args, s);
+	vfprintf(stderr, s, args);
+	fprintf(stderr, "\n");
+	va_end(args);
+	abort();
+}
+
+#if 0
+static void read_png_file_low(const char* file_name, png_image_data_t *png_image_data)
+{
+    png_structp png_ptr;
+    int number_of_passes;
+	char header[8];	// 8 is the maximum size that can be checked
+    int y;
+
+	/* open file and test for it being a png */
+	FILE *fp = fopen(file_name, "rb");
+	if (!fp)
+		abort_("[read_png_file] File %s could not be opened for reading", file_name);
+	fread(header, 1, 8, fp);
+	if (png_sig_cmp(header, 0, 8))
+		abort_("[read_png_file] File %s is not recognized as a PNG file", file_name);
+
+
+	/* initialize stuff */
+	png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+	
+	if (!png_ptr)
+		abort_("[read_png_file] png_create_read_struct failed");
+
+	png_image_data->info_ptr = png_create_info_struct(png_ptr);
+	if (!png_image_data->info_ptr)
+		abort_("[read_png_file] png_create_info_struct failed");
+
+	if (setjmp(png_jmpbuf(png_ptr)))
+		abort_("[read_png_file] Error during init_io");
+	png_init_io(png_ptr, fp);
+
+	png_set_sig_bytes(png_ptr, 8); /* 8 == sig_read ? */
+
+	png_read_info(png_ptr, png_image_data->info_ptr);
+
+    /* set transformations */
+/*
+	if ((png_image_data->info_ptr->color_type & PNG_COLOR_TYPE_RGB) == 0)
+        transforms |= PNG_TRANSFORM_BGR;
+*/
+   if (png_get_valid(png_ptr, png_image_data->info_ptr, PNG_INFO_sBIT))
+   {
+      png_color_8p sig_bit;
+
+      png_get_sBIT(png_ptr, png_image_data->info_ptr, &sig_bit);
+      printf("sig_bit: %d\n", sig_bit);
+      png_set_shift(png_ptr, sig_bit);
+   }
+
+    /* TODO DFG: is this needed? */
+	number_of_passes = png_set_interlace_handling(png_ptr);
+	png_read_update_info(png_ptr, png_image_data->info_ptr);
+
+
+
+
+
+	/* read file */
+	if (setjmp(png_jmpbuf(png_ptr)))
+		abort_("[read_png_file] Error during read_image");
+
+#if 1
+	png_image_data->row_pointers = (png_bytep*) qemu_malloc(sizeof(png_bytep) * png_image_data->info_ptr->height);
+	for (y=0; y < png_image_data->info_ptr->height; y++)
+		png_image_data->row_pointers[y] = (png_byte*) qemu_malloc(png_image_data->info_ptr->rowbytes);
+
+	png_read_image(png_ptr, png_image_data->row_pointers);
+#endif
+    /* DFG TODO: Cleanup */
+
+/*    png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); */
+
+    fclose(fp);
+}
+#endif
+
+static void read_png_file(const char* file_name, png_image_data_t *png_image_data, int max_width, int max_height)
+{
+    png_structp png_ptr;
+    png_infop info_ptr;
+    png_bytep *row_pointers;
+	char header[8];	// 8 is the maximum size that can be checked
+    int y;
+    char* dest;
+
+	/* open file and test for it being a png */
+	FILE *fp = fopen(file_name, "rb");
+	if (!fp)
+		abort_("[read_png_file] File %s could not be opened for reading", file_name);
+	fread(header, 1, 8, fp);
+	if (png_sig_cmp(header, 0, 8))
+		abort_("[read_png_file] File %s is not recognized as a PNG file", file_name);
+
+
+	/* initialize stuff */
+	png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+	
+	if (!png_ptr)
+		abort_("[read_png_file] png_create_read_struct failed");
+
+    if (max_width > 0 && max_height > 0)
+        png_set_user_limits(png_ptr, max_width, max_height);
+
+	info_ptr = png_create_info_struct(png_ptr);
+
+	if (setjmp(png_jmpbuf(png_ptr)))
+		abort_("[read_png_file] Error during init_io");
+	png_init_io(png_ptr, fp);
+
+	if (setjmp(png_jmpbuf(png_ptr)))
+		abort_("[read_png_file] Error during init_io");
+   png_set_sig_bytes(png_ptr, sizeof(header));
+
+	if (setjmp(png_jmpbuf(png_ptr)))
+		abort_("[read_png_file] Error during init_io");
+   png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_STRIP_ALPHA, png_voidp_NULL);
+
+	if (setjmp(png_jmpbuf(png_ptr)))
+		abort_("[read_png_file] Error during init_io");
+
+    row_pointers = png_get_rows(png_ptr, info_ptr);
+
+    png_image_data->height = png_get_image_height(png_ptr, info_ptr);
+    png_image_data->width = png_get_image_width(png_ptr, info_ptr);
+
+    png_image_data->image4c = (void*)qemu_malloc(png_image_data->width * png_image_data->height * 4);
+
+    dest = (char*)png_image_data->image4c;
+
+    /* transform this from 3 channels to a (fake for now) 4 channels */
+	for (y=0; y < png_image_data->height; y++) {
+        char* src = row_pointers[y];
+        int x;
+        for (x = 0; x < png_image_data->width; x++) {
+            *dest = *src; dest++, src++;
+            *dest = *src; dest++, src++;
+            *dest = *src; dest++, src++;
+            *dest = 0; dest++; /* alpha channel ignored */ 
+        }
+    }
+
+    png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
+
+    fclose(fp);
+}
+
+
+
+void gui_load_image_png(const char *filename, gui_image_t *image_data)
+{
+    const int area_height = GET_GUI_AREA_HEIGHT(&image_data->area);
+    const int area_width  = GET_GUI_AREA_WIDTH(&image_data->area);
+    png_image_data_t png_image_data;
+
+    read_png_file(filename, &png_image_data, area_width, area_height);
+
+    /* see if area has to be resized, because of any of these reasons:
+        a) the image is smaller than the area
+        b) the area is 0 (auto size for the background)
+    */
+    if (area_height > png_image_data.height || area_height <= 0)
+        SET_GUI_AREA_HEIGHT(&image_data->area, png_image_data.height);
+    if (area_width > png_image_data.width || area_width <= 0)
+        SET_GUI_AREA_WIDTH(&image_data->area, png_image_data.width);
+
+    image_data->image = png_image_data.image4c;
+}
+