u-boot/tools/easylogo/easylogo.c
Michael Hennerich 7293e0577f easylogo: add support for 16-bit RGB565
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-01-18 00:21:05 +01:00

583 lines
13 KiB
C

/*
** Easylogo TGA->header converter
** ==============================
** (C) 2000 by Paolo Scaffardi (arsenio@tin.it)
** AIRVENT SAM s.p.a - RIMINI(ITALY)
** (C) 2007-2008 Mike Frysinger <vapier@gentoo.org>
**
** This is still under construction!
*/
#include <errno.h>
#include <getopt.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.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 {
void *data, *palette;
int width, height, pixels, bpp, pixel_size, size, palette_size, yuyv;
} image_t;
void *xmalloc (size_t size)
{
void *ret = malloc (size);
if (!ret) {
fprintf (stderr, "\nerror: malloc(%zu) failed: %s",
size, strerror(errno));
exit (1);
}
return ret;
}
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");
}
}
static inline unsigned short le16_to_cpu (unsigned short val)
{
union {
unsigned char pval[2];
unsigned short val;
} swapped;
swapped.val = val;
return (swapped.pval[1] << 8) + swapped.pval[0];
}
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);
/* byte swap: tga is little endian, host is ??? */
header.ColorMapOrigin = le16_to_cpu (header.ColorMapOrigin);
header.ColorMapLenght = le16_to_cpu (header.ColorMapLenght);
header.ImageXOrigin = le16_to_cpu (header.ImageXOrigin);
header.ImageYOrigin = le16_to_cpu (header.ImageYOrigin);
header.ImageWidth = le16_to_cpu (header.ImageWidth);
header.ImageHeight = le16_to_cpu (header.ImageHeight);
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 = xmalloc (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 = xmalloc (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;
}
void image_free (image_t * image)
{
free (image->data);
free (image->palette);
}
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 =
xmalloc (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_rgb888_to_rgb565(image_t *rgb888_image, image_t *rgb565_image)
{
rgb_t *rgb_ptr = (rgb_t *) rgb888_image->data;
unsigned short *dest;
int count = 0;
rgb565_image->pixel_size = 2;
rgb565_image->bpp = 16;
rgb565_image->yuyv = 0;
rgb565_image->width = rgb888_image->width;
rgb565_image->height = rgb888_image->height;
rgb565_image->pixels = rgb565_image->width * rgb565_image->height;
rgb565_image->size = rgb565_image->pixels * rgb565_image->pixel_size;
dest = (unsigned short *) (rgb565_image->data =
xmalloc(rgb565_image->size));
rgb565_image->palette = 0;
rgb565_image->palette_size = 0;
while ((count++) < rgb888_image->pixels) {
*dest++ = ((rgb_ptr->b & 0xF8) << 8) |
((rgb_ptr->g & 0xFC) << 3) |
(rgb_ptr->r >> 3);
rgb_ptr++;
}
return 0;
}
int use_gzip = 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 information */
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");
/* gzip compress */
if (use_gzip & 0x1) {
const char *errstr = NULL;
unsigned char *compressed;
struct stat st;
FILE *gz;
char *gzfilename = xmalloc(strlen (filename) + 20);
char *gzcmd = xmalloc(strlen (filename) + 20);
sprintf (gzfilename, "%s.gz", filename);
sprintf (gzcmd, "gzip > %s", gzfilename);
gz = popen (gzcmd, "w");
if (!gz) {
errstr = "\nerror: popen() failed";
goto done;
}
if (fwrite (image->data, image->size, 1, gz) != 1) {
errstr = "\nerror: writing data to gzip failed";
goto done;
}
if (pclose (gz)) {
errstr = "\nerror: gzip process failed";
goto done;
}
gz = fopen (gzfilename, "r");
if (!gz) {
errstr = "\nerror: open() on gzip data failed";
goto done;
}
if (stat (gzfilename, &st)) {
errstr = "\nerror: stat() on gzip file failed";
goto done;
}
compressed = xmalloc (st.st_size);
if (fread (compressed, st.st_size, 1, gz) != 1) {
errstr = "\nerror: reading gzip data failed";
goto done;
}
fclose (gz);
unlink (gzfilename);
dataptr = compressed;
count = st.st_size;
fprintf (file, "#define EASYLOGO_ENABLE_GZIP %i\n\n", count);
if (use_gzip & 0x2)
fprintf (file, "static unsigned char EASYLOGO_DECOMP_BUFFER[%i];\n\n", image->size);
done:
free (gzfilename);
free (gzcmd);
if (errstr) {
perror (errstr);
return -1;
}
}
/* 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[] = {\n",
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
static void usage (int exit_status)
{
puts (
"EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n"
"\n"
"Syntax: easylogo [options] inputfile [outputvar [outputfile]]\n"
"\n"
"Options:\n"
" -r Output RGB888 instead of YUYV\n"
" -s Output RGB565 instead of YUYV\n"
" -g Compress with gzip\n"
" -b Preallocate space in bss for decompressing image\n"
" -h Help output\n"
"\n"
"Where: 'inputfile' is the TGA image to load\n"
" 'outputvar' is the variable name to create\n"
" 'outputfile' is the output header file (default is 'inputfile.h')"
);
exit (exit_status);
}
int main (int argc, char *argv[])
{
int c;
bool use_rgb888 = false;
bool use_rgb565 = false;
char inputfile[DEF_FILELEN],
outputfile[DEF_FILELEN], varname[DEF_FILELEN];
image_t rgb888_logo, rgb565_logo, yuyv_logo;
while ((c = getopt(argc, argv, "hrsgb")) > 0) {
switch (c) {
case 'h':
usage (0);
break;
case 'r':
use_rgb888 = true;
puts("Using 24-bit RGB888 Output Fromat");
break;
case 's':
use_rgb565 = true;
puts("Using 16-bit RGB565 Output Fromat");
break;
case 'g':
use_gzip |= 0x1;
puts ("Compressing with gzip");
break;
case 'b':
use_gzip |= 0x2;
puts ("Preallocating bss space for decompressing image");
break;
default:
usage (1);
break;
}
}
c = argc - optind;
if (c > 4 || c < 1)
usage (1);
strcpy (inputfile, argv[optind]);
if (c > 1)
strcpy (varname, argv[optind + 1]);
else {
/* transform "input.tga" to just "input" */
char *dot;
strcpy (varname, inputfile);
dot = strchr (varname, '.');
if (dot)
*dot = '\0';
}
if (c > 2)
strcpy (outputfile, argv[optind + 2]);
else {
/* just append ".h" to input file name */
strcpy (outputfile, inputfile);
strcat (outputfile, ".h");
}
/* Make sure the output is sent as soon as we printf() */
setbuf(stdout, NULL);
printf ("Doing '%s' (%s) from '%s'...",
outputfile, varname, inputfile);
/* Import TGA logo */
printf ("L");
if (image_load_tga(&rgb888_logo, inputfile) < 0) {
printf ("input file not found!\n");
exit (1);
}
/* Convert, save, and free the image */
if (!use_rgb888 && !use_rgb565) {
printf ("C");
image_rgb_to_yuyv(&rgb888_logo, &yuyv_logo);
printf("S");
image_save_header(&yuyv_logo, outputfile, varname);
image_free(&yuyv_logo);
} else if (use_rgb565) {
printf("C");
image_rgb888_to_rgb565(&rgb888_logo, &rgb565_logo);
printf("S");
image_save_header(&rgb565_logo, outputfile, varname);
image_free(&rgb565_logo);
} else {
printf("S");
image_save_header(&rgb888_logo, outputfile, varname);
}
/* Free original image and copy */
image_free(&rgb888_logo);
printf ("\n");
return 0;
}