mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 09:32:40 +00:00
153 lines
3.7 KiB
C
153 lines
3.7 KiB
C
// 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
|
|
|
|
|
|
|
|
}
|
|
|