From 6b97e7497c985f18af5f790da37f1e43bc65497c Mon Sep 17 00:00:00 2001
From: hackbard <hackbard>
Date: Fri, 5 Sep 2003 23:33:29 +0000
Subject: [PATCH] -

---
 v4lapi.c | 47 +++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 43 insertions(+), 4 deletions(-)

diff --git a/v4lapi.c b/v4lapi.c
index a85a8a1..92b871a 100644
--- a/v4lapi.c
+++ b/v4lapi.c
@@ -10,14 +10,18 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
+#include <string.h>
+#include <unistd.h>
 
 #include <linux/videodev.h>
 
 int v4l_init(char *dev) {
-	int fd;
+	int fd,i,res;
+	unsigned char buf[500*500];
 	struct video_capability vc;
 	struct video_buffer vb;
 	struct video_window vw;
+	struct video_picture vp;
 	
 	if((fd=open(dev,O_RDONLY))<0) {
 		puts("open failed");
@@ -56,9 +60,10 @@ int v4l_init(char *dev) {
 	printf("width:\t\t %d - %d\n",vc.minwidth,vc.maxwidth);
 	printf("height:\t\t %d - %d\n\n",vc.minheight,vc.maxheight);
 
-	if(ioctl(fd,VIDIOCGFBUF,&vb)<0)
+	if(ioctl(fd,VIDIOCGFBUF,&vb)<0) {
 		puts("direct framebuffer access unsupported");
 		puts("");
+	}
 	else {
 		printf("\n");
 		printf("framebuffer:\n");
@@ -66,14 +71,48 @@ int v4l_init(char *dev) {
 		printf("h: %d - w: %d - d: %d - bpl: %d\n\n",vb.height,vb.width,vb.depth,vb.bytesperline);
 	}
 
+	memset(&vw,0,sizeof(struct video_window));
+	vw.x=0;
+	vw.y=0;
+	vw.width=vc.maxwidth;
+	vw.height=vc.maxheight;
+
+	if(ioctl(fd,VIDIOCSWIN,&vw)<0) {
+		puts("ioctl VIDIOCSWIN failed");
+		return -1;
+	}
+
 	if(ioctl(fd,VIDIOCGWIN,&vw)<0) {
 		puts("ioctl VIDIOCGWIN failed");
 		return -1;
 	}
 
-	printf("capture area:\n");
+	printf("real capture area:\n");
 	printf("x: %u - y: %u\n",vw.x,vw.y);
 	printf("w: %u - h: %u\n",vw.width,vw.height);
-	printf("
+	printf("flags: %08x\n",vw.flags);
+	
+	memset(&vp,0,sizeof(struct video_picture));
+	
+	if(ioctl(fd,VIDIOCGPICT,&vp)<0) {
+		puts("ioctl VIDIOCGPICT failed");
+		return -1;
+	}
+
+	printf("picture: b: %04x - h: %04x - c: %04x - c: %04x - w: %04x - d: %04x - p: %04x\n",vp.brightness,vp.hue,vp.colour,vp.contrast,vp.whiteness,vp.depth,vp.palette);
+	
+	if(ioctl(fd,VIDIOCSPICT,&vp)<0) {
+		puts("ioctl VIDIOCSPICT failed");
+		return -1;
+	}
+
+	if((res=read(fd,buf,(500*500)))<0) {
+		puts("read failed");
+		return -1;
+	}
+	printf("debug: wrote %d bytes:\n",i);
+	for(i=0;i<res;i++) printf("%c ",buf[i]);
+	printf("\n");
+
 	return 1;
 }
-- 
2.20.1