here's a patch for videodog-0.06.c that i did while trying to get my
WinTV card to work. it was defaulting to PAL mode and i need NTSC. it
allows user to select input mode: PAL/NTSC/SECAM and also fixes a couple
small bugs.
douglas
--- videodog-0.06.c Sun Apr 22 21:57:06 2001
+++ videodog-0.06-1.c Sun Apr 22 21:56:56 2001
@@ -10,6 +10,11 @@
* added: -i option to change input ( note that not all devices aloow
this
* corrected bgr -> rgb issue ( depth 3 )
*
+ * 22.april.2001 douglas repetto changes:
+ * -m option to change mode (PAL/NTSC/SECAM)
+ * fixed problem with device name loosing a letter
+ * added update_cap() routine so that Max Width and Height are
reported correctly when changing mode
+ *
* Just grabs a frame from v4l device or set its picture defaults.
Useful for scripts, webcam scripts.
* Output: a raw frame ( RGB ) or pnm frame ( -p option )
*
@@ -31,6 +36,8 @@
*
* Optional:
*
+ * i - Input
+ * m - Mode
* u - Hue
* c - Contrast
* b - Brightness
@@ -42,7 +49,9 @@
* ./videodog -s -d /dev/video0
* - query the device about settings.
* ./videodog -x 320 -y 240 -w 3 -d /dev/video0 -p | cjpeg > lelel.jpg
- * - produces a lelel.jpg image with 320x240x24bpp ( 3 * 8)
+ * - produces a lelel.jpg image with 320x240x24bpp ( 3 * 8) *
./videodog -x 320 -y 240 -w 3 -d /dev/video0 -p | cjpeg > lelel.jpg
+ * ./videodog -x 640 -y 480 -w 3 -i 1 -m NTSC -d /dev/video -p >
out.pnm
+ * - uses input 1 and NTSC mode to grab image
* ./videodog -s -d /dev/video0 -u 200
* - set Hue == 200 and query the device
*
@@ -64,7 +73,7 @@
#define VERSION "0.06"
-#define OPTSTR "hx:y:w:d:pu:c:b:l:sni:"
+#define OPTSTR "hx:y:w:d:pu:c:b:l:m:sni:"
#define DOT fprintf(stderr,".");
void showhelp(void) {
@@ -79,6 +88,7 @@
fprintf (stderr, "Other options :\n");
fprintf (stderr,"-h just show this lines, doesn't help you ok ?\n");
fprintf (stderr,"-i input number (0 is the default) \n");
+ fprintf (stderr,"-m input mode (PAL/NTSC/SECAM) \n");
fprintf (stderr,"-u image Hue\n");
fprintf (stderr,"-c image Contrast\n");
fprintf (stderr,"-b image Brightness \n");
@@ -93,21 +103,23 @@
unsigned short int pnm=0;
int x=0, y=0, w=0;
unsigned char *v_device; /* device */
+unsigned char *v_mode; /* mode */
+unsigned char *default_mode = "NTSC";
static struct video_picture grab_pic;
static struct video_capability grab_cap;
-static struct video_channel grab_vid; /* escolher canal e NTSC */
+static struct video_channel grab_vid; /* escolher canal*/
+static struct video_tuner grab_tun; /* choose PAL/NTSC/SECAM */
static struct video_mmap grab_buf;
static int grab_fd, grab_size;
static unsigned char *grab_data;
int hue=-1, contrast=-1, brightness=-1, colour=-1, nograb=0, showc=0i,
channel=0;
-
/* prototype */
void swap_rgb24(unsigned char *, int );
unsigned char* grab_one(int *, int *);
int grab_init();
-
+int update_cap();
/* signal handler */
void _sighandler (int sig) {
@@ -115,6 +127,7 @@
case SIGINT: /* ctrl+x */
free (v_device);
+ free (v_mode);
close (grab_fd);
munmap(grab_data, grab_size);
fprintf (stderr, "Caught SIGINT - Cleaning \n");
@@ -136,7 +149,34 @@
if (ioctl(grab_fd, VIDIOCGCHAN, &grab_vid) == -1) return;
grab_vid.channel=channel;
if (ioctl(grab_fd, VIDIOCSCHAN, &grab_vid) == -1) return;
+}
+
+void set_mode() {
+ if (ioctl(grab_fd, VIDIOCGTUNER, &grab_tun) == -1) return;
+
+ if (strcmp(v_mode, "PAL") == 0)
+ {
+ grab_tun.flags = VIDEO_TUNER_PAL;
+ grab_tun.mode = VIDEO_MODE_PAL;
+ }
+ else if (strcmp(v_mode, "NTSC") == 0)
+ {
+ grab_tun.flags = VIDEO_TUNER_NTSC;
+ grab_tun.mode = VIDEO_MODE_NTSC;
+ }
+ else if (strcmp(v_mode, "SECAM") == 0)
+ {
+ grab_tun.flags = VIDEO_TUNER_SECAM;
+ grab_tun.mode = VIDEO_MODE_SECAM;
+ }
+ else
+ {
+ fprintf(stderr,
+ "%s is not a valid mode.\n", v_mode);
+ return;
+ }
+ if (ioctl(grab_fd, VIDIOCSTUNER, &grab_tun) == -1) return;
}
void show_cap() { /* mostra settings atuais */
@@ -147,6 +187,7 @@
fprintf (stderr, "Max Height : %d\n", grab_cap.maxheight);
fprintf (stderr, "Current Settings :\n\n");
fprintf (stderr, "\tInput : %i\n", grab_vid.channel);
+ fprintf (stderr, "\tMode: %s\n", v_mode);
fprintf (stderr, "\tBrightness : %i\n", grab_pic.brightness);
fprintf (stderr, "\tHue : %i\n", grab_pic.hue);
fprintf (stderr, "\tColour : %i\n", grab_pic.colour);
@@ -176,12 +217,16 @@
case 'd':
v_device= (char *)malloc ((strlen(optarg) * sizeof(char))+1);
memset(v_device, 0, strlen(optarg));
- strncpy(v_device, optarg, strlen(optarg) -1 );
-
+ strcpy(v_device, optarg);
break;
case 'i':
channel=atoi(optarg);
break;
+ case 'm':
+ v_mode= (char *)malloc ((strlen(optarg) * sizeof(char))+1);
+ memset(v_mode, 0, strlen(optarg));
+ strcpy(v_mode, optarg);
+ break;
case 'u':
hue=atoi(optarg);
break;
@@ -209,6 +254,12 @@
}
if (!x || !y || !w ) nograb=1;
+ if (!v_mode)
+ {
+ v_mode= (char *)malloc ((strlen(default_mode) * sizeof(char)) + 1);
+ memset(v_mode, 0, strlen(default_mode));
+ strcpy(v_mode, default_mode);
+ }
if (!v_device) {
fprintf (stderr, " I NEED A DEVICE NAME \n");
showhelp();
@@ -217,6 +268,8 @@
grab_init();
set_picture();
set_channel();
+ set_mode();
+ update_cap();
if (showc) show_cap();
if (pnm) {
@@ -230,6 +283,7 @@
if (!nograb) fwrite ((unsigned char*)grab_one( &x, &y), x * y * w, 1,
stdout);
free (v_device);
+ free (v_mode);
close (grab_fd);
munmap(grab_data, grab_size);
@@ -282,7 +336,15 @@
grab_data =
mmap(0,grab_size,PROT_READ|PROT_WRITE,MAP_SHARED,grab_fd,0);
return(1);
}
-
+
+int update_cap() {
+ if (ioctl(grab_fd,VIDIOCGCAP,&grab_cap) == -1) {
+ fprintf(stderr,"couldn't update capabilities.\n");
+ exit(1);
+ }
+ return(1);
+ }
+
unsigned char* grab_one(int *width, int *height) {
for (;;) {
if (-1 == ioctl(grab_fd,VIDIOCMCAPTURE,&grab_buf)) {
--
douglas irving repetto
http://music.columbia.edu/~douglas
http://shoko.calarts.edu/musicdsp
http://music.columbia.edu/cmc/dorkbotnyc--- videodog-0.06.c Sun Apr 22 21:57:06 2001
+++ videodog-0.06-1.c Sun Apr 22 21:56:56 2001
@@ -10,6 +10,11 @@
* added: -i option to change input ( note that not all devices aloow this
* corrected bgr -> rgb issue ( depth 3 )
*
+ * 22.april.2001 douglas repetto changes:
+ * -m option to change mode (PAL/NTSC/SECAM)
+ * fixed problem with device name loosing a letter
+ * added update_cap() routine so that Max Width and Height are reported correctly when changing mode
+ *
* Just grabs a frame from v4l device or set its picture defaults. Useful for scripts, webcam scripts.
* Output: a raw frame ( RGB ) or pnm frame ( -p option )
*
@@ -31,6 +36,8 @@
*
* Optional:
*
+ * i - Input
+ * m - Mode
* u - Hue
* c - Contrast
* b - Brightness
@@ -42,7 +49,9 @@
* ./videodog -s -d /dev/video0
* - query the device about settings.
* ./videodog -x 320 -y 240 -w 3 -d /dev/video0 -p | cjpeg > lelel.jpg
- * - produces a lelel.jpg image with 320x240x24bpp ( 3 * 8)
+ * - produces a lelel.jpg image with 320x240x24bpp ( 3 * 8) * ./videodog -x 320 -y 240 -w 3 -d /dev/video0 -p | cjpeg > lelel.jpg
+ * ./videodog -x 640 -y 480 -w 3 -i 1 -m NTSC -d /dev/video -p > out.pnm
+ * - uses input 1 and NTSC mode to grab image
* ./videodog -s -d /dev/video0 -u 200
* - set Hue == 200 and query the device
*
@@ -64,7 +73,7 @@
#define VERSION "0.06"
-#define OPTSTR "hx:y:w:d:pu:c:b:l:sni:"
+#define OPTSTR "hx:y:w:d:pu:c:b:l:m:sni:"
#define DOT fprintf(stderr,".");
void showhelp(void) {
@@ -79,6 +88,7 @@
fprintf (stderr, "Other options :\n");
fprintf (stderr,"-h just show this lines, doesn't help you ok ?\n");
fprintf (stderr,"-i input number (0 is the default) \n");
+ fprintf (stderr,"-m input mode (PAL/NTSC/SECAM) \n");
fprintf (stderr,"-u image Hue\n");
fprintf (stderr,"-c image Contrast\n");
fprintf (stderr,"-b image Brightness \n");
@@ -93,21 +103,23 @@
unsigned short int pnm=0;
int x=0, y=0, w=0;
unsigned char *v_device; /* device */
+unsigned char *v_mode; /* mode */
+unsigned char *default_mode = "NTSC";
static struct video_picture grab_pic;
static struct video_capability grab_cap;
-static struct video_channel grab_vid; /* escolher canal e NTSC */
+static struct video_channel grab_vid; /* escolher canal*/
+static struct video_tuner grab_tun; /* choose PAL/NTSC/SECAM */
static struct video_mmap grab_buf;
static int grab_fd, grab_size;
static unsigned char *grab_data;
int hue=-1, contrast=-1, brightness=-1, colour=-1, nograb=0, showc=0i, channel=0;
-
/* prototype */
void swap_rgb24(unsigned char *, int );
unsigned char* grab_one(int *, int *);
int grab_init();
-
+int update_cap();
/* signal handler */
void _sighandler (int sig) {
@@ -115,6 +127,7 @@
case SIGINT: /* ctrl+x */
free (v_device);
+ free (v_mode);
close (grab_fd);
munmap(grab_data, grab_size);
fprintf (stderr, "Caught SIGINT - Cleaning \n");
@@ -136,7 +149,34 @@
if (ioctl(grab_fd, VIDIOCGCHAN, &grab_vid) == -1) return;
grab_vid.channel=channel;
if (ioctl(grab_fd, VIDIOCSCHAN, &grab_vid) == -1) return;
+}
+
+void set_mode() {
+ if (ioctl(grab_fd, VIDIOCGTUNER, &grab_tun) == -1) return;
+
+ if (strcmp(v_mode, "PAL") == 0)
+ {
+ grab_tun.flags = VIDEO_TUNER_PAL;
+ grab_tun.mode = VIDEO_MODE_PAL;
+ }
+ else if (strcmp(v_mode, "NTSC") == 0)
+ {
+ grab_tun.flags = VIDEO_TUNER_NTSC;
+ grab_tun.mode = VIDEO_MODE_NTSC;
+ }
+ else if (strcmp(v_mode, "SECAM") == 0)
+ {
+ grab_tun.flags = VIDEO_TUNER_SECAM;
+ grab_tun.mode = VIDEO_MODE_SECAM;
+ }
+ else
+ {
+ fprintf(stderr,
+ "%s is not a valid mode.\n", v_mode);
+ return;
+ }
+ if (ioctl(grab_fd, VIDIOCSTUNER, &grab_tun) == -1) return;
}
void show_cap() { /* mostra settings atuais */
@@ -147,6 +187,7 @@
fprintf (stderr, "Max Height : %d\n", grab_cap.maxheight);
fprintf (stderr, "Current Settings :\n\n");
fprintf (stderr, "\tInput : %i\n", grab_vid.channel);
+ fprintf (stderr, "\tMode: %s\n", v_mode);
fprintf (stderr, "\tBrightness : %i\n", grab_pic.brightness);
fprintf (stderr, "\tHue : %i\n", grab_pic.hue);
fprintf (stderr, "\tColour : %i\n", grab_pic.colour);
@@ -176,12 +217,16 @@
case 'd':
v_device= (char *)malloc ((strlen(optarg) * sizeof(char))+1);
memset(v_device, 0, strlen(optarg));
- strncpy(v_device, optarg, strlen(optarg) -1 );
-
+ strcpy(v_device, optarg);
break;
case 'i':
channel=atoi(optarg);
break;
+ case 'm':
+ v_mode= (char *)malloc ((strlen(optarg) * sizeof(char))+1);
+ memset(v_mode, 0, strlen(optarg));
+ strcpy(v_mode, optarg);
+ break;
case 'u':
hue=atoi(optarg);
break;
@@ -209,6 +254,12 @@
}
if (!x || !y || !w ) nograb=1;
+ if (!v_mode)
+ {
+ v_mode= (char *)malloc ((strlen(default_mode) * sizeof(char)) + 1);
+ memset(v_mode, 0, strlen(default_mode));
+ strcpy(v_mode, default_mode);
+ }
if (!v_device) {
fprintf (stderr, " I NEED A DEVICE NAME \n");
showhelp();
@@ -217,6 +268,8 @@
grab_init();
set_picture();
set_channel();
+ set_mode();
+ update_cap();
if (showc) show_cap();
if (pnm) {
@@ -230,6 +283,7 @@
if (!nograb) fwrite ((unsigned char*)grab_one( &x, &y), x * y * w, 1, stdout);
free (v_device);
+ free (v_mode);
close (grab_fd);
munmap(grab_data, grab_size);
@@ -282,7 +336,15 @@
grab_data = mmap(0,grab_size,PROT_READ|PROT_WRITE,MAP_SHARED,grab_fd,0);
return(1);
}
-
+
+int update_cap() {
+ if (ioctl(grab_fd,VIDIOCGCAP,&grab_cap) == -1) {
+ fprintf(stderr,"couldn't update capabilities.\n");
+ exit(1);
+ }
+ return(1);
+ }
+
unsigned char* grab_one(int *width, int *height) {
for (;;) {
if (-1 == ioctl(grab_fd,VIDIOCMCAPTURE,&grab_buf)) {
