SWORD25: Add standalone SWF renderer

svn-id: r53372

1 files changed, 172 insertions, 0 deletions

diff --git a/engines/sword25/tools/swfdisplay/swfrender.cpp b/engines/sword25/tools/swfdisplay/swfrender.cpp
new file mode 100644
index 0000000000..af536978c0
--- /dev/null
+++ b/engines/sword25/tools/swfdisplay/swfrender.cpp
@@ -0,0 +1,172 @@
+#include "art.h"
+#include "vectorimage.h"
+
+#define SAVING 1
+
+#if SAVING
+static void save_buffer(unsigned char *buffer, uint width, uint height, const char *filename);
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <png.h>
+#include <stdio.h>
+
+static gboolean
+pixbuf_save_to_file(const GdkPixbuf *pixbuf, const char *file_name) {
+	FILE *handle;
+	unsigned char *buffer;
+	gboolean has_alpha;
+	int width, height, depth, rowstride;
+	guchar *pixels;
+	png_structp png_ptr;
+	png_infop info_ptr;
+	png_text text[2];
+	int i;
+
+	g_return_val_if_fail(pixbuf != NULL, FALSE);
+	g_return_val_if_fail(file_name != NULL, FALSE);
+	g_return_val_if_fail(file_name[0] != '\0', FALSE);
+
+	handle = fopen(file_name, "wb");
+	if (handle == NULL) {
+		return FALSE;
+	}
+
+	png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+	if (png_ptr == NULL) {
+		fclose(handle);
+		return FALSE;
+	}
+
+	info_ptr = png_create_info_struct(png_ptr);
+	if (info_ptr == NULL) {
+		png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
+		fclose(handle);
+		return FALSE;
+	}
+
+	if (setjmp(png_ptr->jmpbuf)) {
+		png_destroy_write_struct(&png_ptr, &info_ptr);
+		fclose(handle);
+		return FALSE;
+	}
+
+	png_init_io(png_ptr, handle);
+
+	has_alpha = gdk_pixbuf_get_has_alpha(pixbuf);
+	width = gdk_pixbuf_get_width(pixbuf);
+	height = gdk_pixbuf_get_height(pixbuf);
+	depth = gdk_pixbuf_get_bits_per_sample(pixbuf);
+	pixels = gdk_pixbuf_get_pixels(pixbuf);
+	rowstride = gdk_pixbuf_get_rowstride(pixbuf);
+
+	png_set_IHDR(png_ptr, info_ptr, width, height,
+	             depth, PNG_COLOR_TYPE_RGB_ALPHA,
+	             PNG_INTERLACE_NONE,
+	             PNG_COMPRESSION_TYPE_DEFAULT,
+	             PNG_FILTER_TYPE_DEFAULT);
+
+	/* Some text to go with the png image */
+	text[0].key = "Title";
+	text[0].text = (char *) file_name;
+	text[0].compression = PNG_TEXT_COMPRESSION_NONE;
+	text[1].key = "Software";
+	text[1].text = "Nautilus Thumbnail";
+	text[1].compression = PNG_TEXT_COMPRESSION_NONE;
+	png_set_text(png_ptr, info_ptr, text, 2);
+
+	/* Write header data */
+	png_write_info(png_ptr, info_ptr);
+
+	/* if there is no alpha in the data, allocate buffer to expand into */
+	if (has_alpha) {
+		buffer = NULL;
+	} else {
+		buffer = (unsigned char *)g_malloc(4 * width);
+	}
+
+	/* pump the raster data into libpng, one scan line at a time */
+	for (i = 0; i < height; i++) {
+		if (has_alpha) {
+			png_bytep row_pointer = pixels;
+			png_write_row(png_ptr, row_pointer);
+		} else {
+			/* expand RGB to RGBA using an opaque alpha value */
+			int x;
+			unsigned char *buffer_ptr = buffer;
+			unsigned char *source_ptr = pixels;
+			for (x = 0; x < width; x++) {
+				*buffer_ptr++ = *source_ptr++;
+				*buffer_ptr++ = *source_ptr++;
+				*buffer_ptr++ = *source_ptr++;
+				*buffer_ptr++ = 255;
+			}
+			png_write_row(png_ptr, (png_bytep) buffer);
+		}
+		pixels += rowstride;
+	}
+
+	png_write_end(png_ptr, info_ptr);
+	png_destroy_write_struct(&png_ptr, &info_ptr);
+
+	g_free(buffer);
+
+	fclose(handle);
+	return TRUE;
+}
+
+static void
+save_buffer(unsigned char *buffer, uint width, uint height, const char *filename) {
+	GdkPixbuf *pixbuf;
+
+	g_type_init();
+
+	pixbuf = gdk_pixbuf_new_from_data(buffer,
+	                                  GDK_COLORSPACE_RGB,
+	                                  TRUE,
+									  8,
+	                                  width, height,
+	                                  width * 4,
+	                                  NULL, NULL);
+
+	pixbuf_save_to_file(pixbuf, filename);
+
+	gdk_pixbuf_unref(pixbuf);
+}
+
+#endif
+
+
+int main(int argc, char *argv[]) {
+	if (argc < 2) {
+		printf("Usage: %s <file>\n", argv[0]);
+		exit(0);
+	}
+
+	int fnamelen = strlen(argv[1]);
+	char *fname = (char *)malloc(fnamelen + 1);
+	strcpy(fname, argv[1]);
+	fname[fnamelen-3] = 'p';
+	fname[fnamelen-2] = 'n';
+	fname[fnamelen-1] = 'g';
+
+	FILE *in = fopen(argv[1], "r");
+	fseek(in, 0, SEEK_END);
+	uint32 len = ftell(in);
+
+	byte *buf = (byte *)malloc(len);
+	fseek(in, 0, SEEK_SET);
+
+	fread(buf, len, 1, in);
+	fclose(in);
+
+	bool success;
+	Sword25::VectorImage img(buf, len, success);
+
+	img.render(img.getWidth(), img.getHeight());
+
+#if SAVING
+	save_buffer(img.getPixelData(), img.getWidth(), img.getHeight(), fname);
+#endif
+
+	return 0;
+}