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// testing only, not finished!!!!!!!
// little TeleVision program by A'rpi/ESP-team
// based on streamer-old.c video capture util (part of xawtv) by
// (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <ctype.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/shm.h>
#include <sys/ipc.h>
#include <sys/wait.h>
#include <asm/types.h> /* XXX glibc */
#include "videodev.h"
#include "libvo/video_out.h"
#define DEVNAME "/dev/video"
static struct video_mmap gb1,gb2;
static struct video_capability capability;
static struct video_channel channel;
static struct video_mbuf gb_buffers = { 2*0x151000, 0, {0,0x151000 }};
static unsigned char *map = NULL;
int main(int argc,char* argv[]){
vo_functions_t *video_out=NULL;
char* video_driver=NULL; //"mga"; // default
int i;
int fd=-1;
char* frame=NULL;
int count=0;
if(argc>1) video_driver=argv[1];
// check video_out driver name:
if(!video_driver)
video_out=video_out_drivers[0];
else
for (i=0; video_out_drivers[i] != NULL; i++){
const vo_info_t *info = video_out_drivers[i]->get_info ();
if(strcmp(info->short_name,video_driver) == 0){
video_out = video_out_drivers[i];break;
}
}
if(!video_out){
printf("Invalid video output driver name: %s\n",video_driver);
return 0;
}
/* open */
if (-1 == fd && -1 == (fd = open(DEVNAME,O_RDWR))) {
fprintf(stderr,"open %s: %s\n",DEVNAME,strerror(errno));
exit(1);
}
/* get settings */
if (-1 == ioctl(fd,VIDIOCGCAP,&capability)) {
perror("ioctl VIDIOCGCAP");
exit(1);
}
if (-1 == ioctl(fd,VIDIOCGCHAN,&channel))
perror("ioctl VIDIOCGCHAN");
/* mmap() buffer */
if (-1 == ioctl(fd,VIDIOCGMBUF,&gb_buffers)) {
perror("ioctl VIDIOCGMBUF");
}
map = mmap(0,gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,fd,0);
if ((unsigned char*)-1 == map) {
perror("mmap");
} else {
fprintf(stderr,"v4l: mmap()'ed buffer size = 0x%x\n",
gb_buffers.size);
}
/* prepare for grabbing */
gb1.format = VIDEO_PALETTE_YUV422;
// gb1.format = VIDEO_PALETTE_RGB24;
gb1.frame = 0;
gb1.width = 352;//720;//640;//320;
gb1.height = 288;//576;//480;//240;
gb2.format = gb1.format;
gb2.frame = 1;
gb2.width = gb1.width;
gb2.height = gb1.height;
video_out->init(gb1.width,gb1.height,1024,768,0,0,IMGFMT_YUY2);
// video_out->init(gb1.width,gb1.height,1024,768,0,0,IMGFMT_RGB|24);
if (-1 == ioctl(fd,VIDIOCMCAPTURE,&gb1)) {
if (errno == EAGAIN)
fprintf(stderr,"grabber chip can't sync (no station tuned in?)\n");
else
perror("ioctl VIDIOCMCAPTURE");
exit(1);
}
count++;
while(1){
// MAIN LOOP
if (-1 == ioctl(fd,VIDIOCMCAPTURE,(count%2) ? &gb2 : &gb1)) {
if (errno == EAGAIN)
fprintf(stderr,"grabber chip can't sync (no station tuned in?)\n");
else
perror("ioctl VIDIOCMCAPTURE");
exit(1);
}
if (-1 == ioctl(fd,VIDIOCSYNC,(count%2) ? &gb1.frame : &gb2.frame)) {
perror("ioctl VIDIOCSYNC");
exit(1);
}
frame=map + gb_buffers.offsets[(count%2) ? 0 : 1];
video_out->draw_frame((unsigned char**)&frame);
video_out->flip_page();
count++;
}
#if 0
{ FILE *f=fopen("frame.yuv","wb");
fwrite(map,320*240*2,1,f);
fclose(f);
}
video_out->init(320,240,800,600,0,0,IMGFMT_YUY2);
video_out->draw_frame(count?map1:map2);
video_out->flip_page();
getchar();
#endif
}
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