Initial revision
diff --git a/tools/easylogo/easylogo.c b/tools/easylogo/easylogo.c
new file mode 100644
index 0000000..548e3c3
--- /dev/null
+++ b/tools/easylogo/easylogo.c
@@ -0,0 +1,422 @@
+/*
+** Easylogo TGA->header converter
+** ==============================
+** (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
+** AIRVENT SAM s.p.a - RIMINI(ITALY)
+**
+** This is still under construction!
+*/
+
+#include <stdio.h>
+
+#pragma pack(1)
+
+/*#define ENABLE_ASCII_BANNERS */
+
+typedef struct {
+ unsigned char id;
+ unsigned char ColorMapType;
+ unsigned char ImageTypeCode;
+ unsigned short ColorMapOrigin;
+ unsigned short ColorMapLenght;
+ unsigned char ColorMapEntrySize;
+ unsigned short ImageXOrigin;
+ unsigned short ImageYOrigin;
+ unsigned short ImageWidth;
+ unsigned short ImageHeight;
+ unsigned char ImagePixelSize;
+ unsigned char ImageDescriptorByte;
+} tga_header_t;
+
+typedef struct {
+ unsigned char r,g,b ;
+} rgb_t ;
+
+typedef struct {
+ unsigned char b,g,r ;
+} bgr_t ;
+
+typedef struct {
+ unsigned char Cb,y1,Cr,y2;
+} yuyv_t ;
+
+typedef struct {
+ unsigned char *data,
+ *palette ;
+ int width,
+ height,
+ pixels,
+ bpp,
+ pixel_size,
+ size,
+ palette_size,
+ yuyv;
+} image_t ;
+
+void StringUpperCase (char *str)
+{
+ int count = strlen(str);
+ char c ;
+
+ while(count--)
+ {
+ c=*str;
+ if ((c >= 'a')&&(c<='z'))
+ *str = 'A' + (c-'a');
+ str++ ;
+ }
+}
+
+void StringLowerCase (char *str)
+{
+ int count = strlen(str);
+ char c ;
+
+ while(count--)
+ {
+ c=*str;
+ if ((c >= 'A')&&(c<='Z'))
+ *str = 'a' + (c-'A');
+ str++ ;
+ }
+}
+void pixel_rgb_to_yuyv (rgb_t *rgb_pixel, yuyv_t *yuyv_pixel)
+{
+ unsigned int pR, pG, pB ;
+
+ /* Transform (0-255) components to (0-100) */
+ pR = rgb_pixel->r * 100 / 255 ;
+ pG = rgb_pixel->g * 100 / 255 ;
+ pB = rgb_pixel->b * 100 / 255 ;
+
+ /* Calculate YUV values (0-255) from RGB beetween 0-100 */
+ yuyv_pixel->y1 = yuyv_pixel->y2 = 209 * (pR + pG + pB) / 300 + 16 ;
+ yuyv_pixel->Cb = pB - (pR/4) - (pG*3/4) + 128 ;
+ yuyv_pixel->Cr = pR - (pG*3/4) - (pB/4) + 128 ;
+
+ return ;
+}
+
+void printlogo_rgb (rgb_t *data, int w, int h)
+{
+ int x,y;
+ for (y=0; y<h; y++)
+ {
+ for (x=0; x<w; x++, data++)
+ if ((data->r < 30)/*&&(data->g == 0)&&(data->b == 0)*/)
+ printf(" ");
+ else
+ printf("X");
+ printf("\n");
+ }
+}
+
+void printlogo_yuyv (unsigned short *data, int w, int h)
+{
+ int x,y;
+ for (y=0; y<h; y++)
+ {
+ for (x=0; x<w; x++, data++)
+ if (*data == 0x1080) /* Because of inverted on i386! */
+ printf(" ");
+ else
+ printf("X");
+ printf("\n");
+ }
+}
+
+int image_load_tga (image_t *image, char *filename)
+{
+ FILE *file ;
+ tga_header_t header ;
+ int i;
+ unsigned char app ;
+ rgb_t *p ;
+
+ if( ( file = fopen( filename, "rb" ) ) == NULL )
+ return -1;
+
+ fread(&header, sizeof(header), 1, file);
+
+ image->width = header.ImageWidth ;
+ image->height = header.ImageHeight ;
+
+ switch (header.ImageTypeCode){
+ case 2: /* Uncompressed RGB */
+ image->yuyv = 0 ;
+ image->palette_size = 0 ;
+ image->palette = NULL ;
+ break;
+
+ default:
+ printf("Format not supported!\n");
+ return -1 ;
+ }
+
+ image->bpp = header.ImagePixelSize ;
+ image->pixel_size = ((image->bpp-1) / 8) + 1 ;
+ image->pixels = image->width * image->height;
+ image->size = image->pixels * image->pixel_size ;
+ image->data = malloc(image->size) ;
+
+ if (image->bpp != 24)
+ {
+ printf("Bpp not supported: %d!\n", image->bpp);
+ return -1 ;
+ }
+
+ fread(image->data, image->size, 1, file);
+
+/* Swapping R and B values */
+
+ p = image->data ;
+ for(i=0; i < image->pixels; i++, p++)
+ {
+ app = p->r ;
+ p->r = p->b ;
+ p->b = app ;
+ }
+
+/* Swapping image */
+
+ if(!(header.ImageDescriptorByte & 0x20))
+ {
+ unsigned char *temp = malloc(image->size);
+ int linesize = image->pixel_size * image->width ;
+ void *dest = image->data,
+ *source = temp + image->size - linesize ;
+
+ printf("S");
+ if (temp == NULL)
+ {
+ printf("Cannot alloc temp buffer!\n");
+ return -1;
+ }
+
+ memcpy(temp, image->data, image->size);
+ for(i = 0; i<image->height; i++, dest+=linesize, source-=linesize)
+ memcpy(dest, source, linesize);
+
+ free( temp );
+ }
+
+#ifdef ENABLE_ASCII_BANNERS
+ printlogo_rgb (image->data,image->width, image->height);
+#endif
+
+ fclose (file);
+ return 0;
+}
+
+int image_free (image_t *image)
+{
+ if(image->data != NULL)
+ free(image->data);
+
+ if(image->palette != NULL)
+ free(image->palette);
+
+ return 0;
+}
+
+int image_rgb_to_yuyv (image_t *rgb_image, image_t *yuyv_image)
+{
+ rgb_t *rgb_ptr = (rgb_t *) rgb_image->data ;
+ yuyv_t yuyv ;
+ unsigned short *dest ;
+ int count = 0 ;
+
+ yuyv_image->pixel_size = 2 ;
+ yuyv_image->bpp = 16 ;
+ yuyv_image->yuyv = 1 ;
+ yuyv_image->width = rgb_image->width ;
+ yuyv_image->height = rgb_image->height ;
+ yuyv_image->pixels = yuyv_image->width * yuyv_image->height ;
+ yuyv_image->size = yuyv_image->pixels * yuyv_image->pixel_size ;
+ dest = (unsigned short *) (yuyv_image->data = malloc(yuyv_image->size)) ;
+ yuyv_image->palette = 0 ;
+ yuyv_image->palette_size= 0 ;
+
+ while((count++) < rgb_image->pixels)
+ {
+ pixel_rgb_to_yuyv (rgb_ptr++, &yuyv);
+
+ if ((count & 1)==0) /* Was == 0 */
+ memcpy (dest, ((void *)&yuyv) + 2, sizeof(short));
+ else
+ memcpy (dest, (void *)&yuyv, sizeof(short));
+
+ dest ++ ;
+ }
+
+#ifdef ENABLE_ASCII_BANNERS
+ printlogo_yuyv (yuyv_image->data, yuyv_image->width, yuyv_image->height);
+#endif
+ return 0 ;
+}
+
+int image_save_header (image_t *image, char *filename, char *varname)
+{
+ FILE *file = fopen (filename, "w");
+ char app[256], str[256]="", def_name[64] ;
+ int count = image->size, col=0;
+ unsigned char *dataptr = image->data ;
+ if (file==NULL)
+ return -1 ;
+
+/* Author informations */
+ fprintf(file, "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n/*\n"); */
+ fprintf(file, " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n", varname);
+ fprintf(file, " * Where:\t'screen'\tis the pointer to the frame buffer\n");
+ fprintf(file, " *\t\t'width'\tis the screen width\n");
+ fprintf(file, " *\t\t'x'\t\tis the horizontal position\n");
+ fprintf(file, " *\t\t'y'\t\tis the vertical position\n */\n\n");
+
+/* Headers */
+ fprintf(file, "#include <video_easylogo.h>\n\n");
+/* Macros */
+ strcpy(def_name, varname);
+ StringUpperCase (def_name);
+ fprintf(file, "#define DEF_%s_WIDTH\t\t%d\n", def_name, image->width);
+ fprintf(file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name, image->height);
+ fprintf(file, "#define DEF_%s_PIXELS\t\t%d\n", def_name, image->pixels);
+ fprintf(file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp);
+ fprintf(file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name, image->pixel_size);
+ fprintf(file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name, image->size);
+/* Declaration */
+ fprintf(file, "unsigned char DEF_%s_DATA[DEF_%s_SIZE] = {\n", def_name, def_name);
+
+/* Data */
+ while(count)
+ switch (col){
+ case 0:
+ sprintf(str, " 0x%02x", *dataptr++);
+ col++;
+ count-- ;
+ break;
+
+ case 16:
+ fprintf(file, "%s", str);
+ if (count > 0)
+ fprintf(file,",");
+ fprintf(file, "\n");
+
+ col = 0 ;
+ break;
+
+ default:
+ strcpy(app, str);
+ sprintf(str, "%s, 0x%02x", app, *dataptr++);
+ col++ ;
+ count-- ;
+ break;
+ }
+
+ if (col)
+ fprintf(file, "%s\n", str);
+
+/* End of declaration */
+ fprintf(file, "};\n\n");
+/* Variable */
+ fprintf(file, "fastimage_t %s = {\n", varname);
+ fprintf(file, " DEF_%s_DATA,\n", def_name);
+ fprintf(file, " DEF_%s_WIDTH,\n", def_name);
+ fprintf(file, " DEF_%s_HEIGHT,\n", def_name);
+ fprintf(file, " DEF_%s_BPP,\n", def_name);
+ fprintf(file, " DEF_%s_PIXEL_SIZE,\n", def_name);
+ fprintf(file, " DEF_%s_SIZE\n};\n", def_name);
+
+ fclose (file);
+
+ return 0 ;
+}
+
+#define DEF_FILELEN 256
+
+int main (int argc, char *argv[])
+{
+ char
+ inputfile[DEF_FILELEN],
+ outputfile[DEF_FILELEN],
+ varname[DEF_FILELEN];
+
+ image_t rgb_logo, yuyv_logo ;
+
+ switch (argc){
+ case 2:
+ case 3:
+ case 4:
+ strcpy (inputfile, argv[1]);
+
+ if (argc > 2)
+ strcpy (varname, argv[2]);
+ else
+ {
+ int pos = strchr(inputfile, '.');
+
+ if (pos >= 0)
+ {
+ strncpy (varname, inputfile, pos);
+ varname[pos] = 0 ;
+ }
+ }
+
+ if (argc > 3)
+ strcpy (outputfile, argv[3]);
+ else
+ {
+ int pos = strchr (varname, '.');
+
+ if (pos > 0)
+ {
+ char app[DEF_FILELEN] ;
+
+ strncpy(app, varname, pos);
+ sprintf(outputfile, "%s.h", app);
+ }
+ }
+ break;
+
+ default:
+ printf("EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n\n");
+
+ printf("Syntax: easylogo inputfile [outputvar {outputfile}] \n");
+ printf("\n");
+ printf("Where: 'inputfile' is the TGA image to load\n");
+ printf(" 'outputvar' is the variable name to create\n");
+ printf(" 'outputfile' is the output header file (default is 'inputfile.h')\n");
+
+ return -1 ;
+ }
+
+ printf("Doing '%s' (%s) from '%s'...",
+ outputfile, varname, inputfile);
+
+/* Import TGA logo */
+
+ printf("L");
+ if (image_load_tga (&rgb_logo, inputfile)<0)
+ {
+ printf("input file not found!\n");
+ exit(1);
+ }
+
+/* Convert it to YUYV format */
+
+ printf("C");
+ image_rgb_to_yuyv (&rgb_logo, &yuyv_logo) ;
+
+/* Save it into a header format */
+
+ printf("S");
+ image_save_header (&yuyv_logo, outputfile, varname) ;
+
+/* Free original image and copy */
+
+ image_free (&rgb_logo);
+ image_free (&yuyv_logo);
+
+ printf("\n");
+
+ return 0 ;
+}