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