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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <draw.h>
#include <event.h>
#include "imagefile.h"
int cflag = 0;
int dflag = 0;
int eflag = 0;
int nineflag = 0;
int threeflag = 0;
int output = 0;
ulong outchan = CMAP8;
int defaultcolor = 1;
Image *image;
enum{
Border = 2,
Edge = 5
};
char *show(int, char*);
Rawimage** readyuv(int fd, int colorspace);
void
eresized(int new)
{
Rectangle r;
if(new && getwindow(display, Refnone) < 0){
fprint(2, "yuv: can't reattach to window\n");
exits("resize");
}
if(image == nil)
return;
r = insetrect(screen->clipr, Edge+Border);
r.max.x = r.min.x+Dx(image->r);
r.max.y = r.min.y+Dy(image->r);
border(screen, r, -Border, nil, ZP);
draw(screen, r, image, nil, image->r.min);
flushimage(display, 1);
}
void
usage(void)
{
fprint(2, "usage: yuv -39cdektv -W winsize [file.yuv ...]\n");
exits("usage");
}
void
main(int argc, char *argv[])
{
int fd, i;
char *err;
ARGBEGIN{
case 'W':
winsize = EARGF(usage());
break;
case '3': /* produce encoded, compressed, three-color bitmap file; no display by default */
threeflag++;
/* fall through */
case 't': /* produce encoded, compressed, true-color bitmap file; no display by default */
cflag++;
dflag++;
output++;
defaultcolor = 0;
outchan = RGB24;
break;
case 'c': /* produce encoded, compressed, bitmap file; no display by default */
cflag++;
dflag++;
output++;
if(defaultcolor)
outchan = CMAP8;
break;
case 'd': /* suppress display of image */
dflag++;
break;
case 'e': /* disable floyd-steinberg error diffusion */
eflag++;
break;
case 'k': /* force black and white */
defaultcolor = 0;
outchan = GREY8;
break;
case 'v': /* force RGBV */
defaultcolor = 0;
outchan = CMAP8;
break;
case '9': /* produce plan 9, uncompressed, bitmap file; no display by default */
nineflag++;
dflag++;
output++;
if(defaultcolor)
outchan = CMAP8;
break;
default:
usage();
}ARGEND;
err = nil;
if(argc == 0)
err = show(0, "<stdin>");
else{
for(i=0; i<argc; i++){
fd = open(argv[i], OREAD);
if(fd < 0){
fprint(2, "yuv: can't open %s: %r\n", argv[i]);
err = "open";
}else{
err = show(fd, argv[i]);
close(fd);
}
if((nineflag || cflag) && argc>1 && err==nil){
fprint(2, "yuv: exiting after one file\n");
break;
}
}
}
exits(err);
}
int
init(void)
{
static int inited;
if(inited == 0){
if(initdraw(0, 0, 0) < 0){
fprint(2, "yuv: initdraw failed: %r");
return -1;
}
einit(Ekeyboard|Emouse);
inited++;
}
return 1;
}
char*
show(int fd, char *name)
{
Rawimage **array, *r, *c;
Image *i;
int j, ch;
char buf[32];
array = readyuv(fd, CYCbCr);
if(array == nil || array[0]==nil){
fprint(2, "yuv: decode %s failed: %r\n", name);
return "decode";
}
if(!dflag){
if(init() < 0)
return "initdraw";
if(defaultcolor && screen->depth>8)
outchan = RGB24;
}
r = array[0];
if(outchan == CMAP8)
c = torgbv(r, !eflag);
else{
if(outchan==GREY8 || (r->chandesc==CY && threeflag==0))
c = totruecolor(r, CY);
else
c = totruecolor(r, CRGB24);
}
if(c == nil){
fprint(2, "yuv: converting %s to local format failed: %r\n", name);
return "torgbv";
}
if(!dflag){
if(r->chandesc == CY)
i = allocimage(display, c->r, GREY8, 0, 0);
else
i = allocimage(display, c->r, outchan, 0, 0);
if(i == nil){
fprint(2, "yuv: allocimage %s failed: %r\n", name);
return "allocimage";
}
if(loadimage(i, i->r, c->chans[0], c->chanlen) < 0){
fprint(2, "yuv: loadimage %s failed: %r\n", name);
return "loadimage";
}
image = i;
eresized(0);
if((ch=ekbd())=='q' || ch==0x7F || ch==0x04)
exits(nil);
draw(screen, screen->clipr, display->white, nil, ZP);
image = nil;
freeimage(i);
}
if(nineflag){
chantostr(buf, outchan);
print("%11s %11d %11d %11d %11d ", buf,
c->r.min.x, c->r.min.y, c->r.max.x, c->r.max.y);
if(write(1, c->chans[0], c->chanlen) != c->chanlen){
fprint(2, "yuv: %s: write error %r\n", name);
return "write";
}
}else if(cflag){
if(writerawimage(1, c) < 0){
fprint(2, "yuv: %s: write error: %r\n", name);
return "write";
}
}
for(j=0; j<r->nchans; j++)
free(r->chans[j]);
free(r->cmap);
free(r);
free(array);
if(c){
free(c->chans[0]);
free(c);
}
return nil;
}
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