| Current File : //usr/share/doc/libdc1394-devel-2.2.2/dc1394_multiview.c |
/*
* 1394-Based Digital Camera Control Library
*
* Written by Damien Douxchamps <ddouxchamps@users.sf.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/Xvlib.h>
#include <X11/keysym.h>
#define _GNU_SOURCE
#include <getopt.h>
#include <stdint.h>
#include <inttypes.h>
#include "dc1394/dc1394.h"
/* uncomment the following to drop frames to prevent delays */
#define MAX_PORTS 4
#define MAX_CAMERAS 8
#define NUM_BUFFERS 8
/* ok the following constant should be by right included thru in Xvlib.h */
#ifndef XV_YV12
#define XV_YV12 0x32315659
#endif
#ifndef XV_YUY2
#define XV_YUY2 0x32595559
#endif
#ifndef XV_UYVY
#define XV_UYVY 0x59565955
#endif
/* declarations for libdc1394 */
uint32_t numCameras = 0;
dc1394camera_t *cameras[MAX_CAMERAS];
dc1394featureset_t features;
dc1394video_frame_t * frames[MAX_CAMERAS];
/* declarations for video1394 */
char *device_name=NULL;
/* declarations for Xwindows */
Display *display=NULL;
Window window=(Window)NULL;
unsigned long width,height;
unsigned long device_width,device_height;
int connection=-1;
XvImage *xv_image=NULL;
XvAdaptorInfo *info;
long format=0;
GC gc;
/* Other declarations */
unsigned long frame_length;
long frame_free;
int frame=0;
int adaptor=-1;
int freeze=0;
int average=0;
int fps;
int res;
char *frame_buffer=NULL;
static struct option long_options[]={
{"device",1,NULL,0},
{"fps",1,NULL,0},
{"res",1,NULL,0},
{"help",0,NULL,0},
{NULL,0,0,0}
};
void get_options(int argc,char *argv[])
{
int option_index=0;
fps=7;
res=0;
while(getopt_long(argc,argv,"",long_options,&option_index)>=0){
if(optarg){
switch(option_index){
/* case values must match long_options */
case 0:
device_name=strdup(optarg);
break;
case 1:
fps=atoi(optarg);
break;
case 2:
res=atoi(optarg);
break;
}
}
if(option_index==3){
printf( "\n"
" %s - multi-cam monitor for libdc1394 and XVideo\n\n"
"Usage:\n"
" %s [--fps=[1,3,7,15,30]] [--res=[0,1,2]] [--device=/dev/video1394/x]\n"
" --fps - frames per second. default=7,\n"
" 30 not compatible with --res=2\n"
" --res - resolution. 0 = 320x240 (default),\n"
" 1 = 640x480 YUV4:1:1, 2 = 640x480 RGB8\n"
" --device - specifies video1394 device to use (optional)\n"
" default = automatic\n"
" --help - prints this message\n\n"
"Keyboard Commands:\n"
" q = quit\n"
" < -or- , = scale -50%%\n"
" > -or- . = scale +50%%\n"
" 0 = pause\n"
" 1 = set framerate to 1.875 fps\n"
" 2 = set framerate tp 3.75 fps\n"
" 3 = set framerate to 7.5 fps\n"
" 4 = set framerate to 15 fps\n"
" 5 = set framerate to 30 fps\n"
,argv[0],argv[0]);
exit(0);
}
}
}
/* image format conversion functions */
static inline
void iyu12yuy2 (unsigned char *src, unsigned char *dest, uint32_t NumPixels) {
int i=0,j=0;
register int y0, y1, y2, y3, u, v;
while (i < NumPixels*3/2) {
u = src[i++];
y0 = src[i++];
y1 = src[i++];
v = src[i++];
y2 = src[i++];
y3 = src[i++];
dest[j++] = y0;
dest[j++] = u;
dest[j++] = y1;
dest[j++] = v;
dest[j++] = y2;
dest[j++] = u;
dest[j++] = y3;
dest[j++] = v;
}
}
static inline
void rgb2yuy2 (unsigned char *RGB, unsigned char *YUV, uint32_t NumPixels) {
int i, j;
register int y0, y1, u0, u1, v0, v1 ;
register int r, g, b;
for (i = 0, j = 0; i < 3 * NumPixels; i += 6, j += 4) {
r = RGB[i + 0];
g = RGB[i + 1];
b = RGB[i + 2];
RGB2YUV (r, g, b, y0, u0 , v0);
r = RGB[i + 3];
g = RGB[i + 4];
b = RGB[i + 5];
RGB2YUV (r, g, b, y1, u1 , v1);
YUV[j + 0] = y0;
YUV[j + 1] = (u0+u1)/2;
YUV[j + 2] = y1;
YUV[j + 3] = (v0+v1)/2;
}
}
/* helper functions */
void set_frame_length(unsigned long size, int numCameras)
{
frame_length=size;
dc1394_log_debug("Setting frame size to %ld kb",size/1024);
frame_free=0;
frame_buffer = malloc( size * numCameras);
}
void display_frames()
{
uint32_t i;
if(!freeze && adaptor>=0){
for (i = 0; i < numCameras; i++) {
if (!frames[i])
continue;
switch (res) {
case DC1394_VIDEO_MODE_640x480_YUV411:
iyu12yuy2( frames[i]->image,
(unsigned char *)(frame_buffer + (i * frame_length)),
(device_width*device_height) );
break;
case DC1394_VIDEO_MODE_320x240_YUV422:
case DC1394_VIDEO_MODE_640x480_YUV422:
memcpy( frame_buffer + (i * frame_length),
frames[i]->image, device_width*device_height*2);
break;
case DC1394_VIDEO_MODE_640x480_RGB8:
rgb2yuy2( frames[i]->image,
(unsigned char *) (frame_buffer + (i * frame_length)),
(device_width*device_height) );
break;
}
}
xv_image=XvCreateImage(display,info[adaptor].base_id,format,frame_buffer,
device_width,device_height * numCameras);
XvPutImage(display,info[adaptor].base_id,window,gc,xv_image,
0,0,device_width,device_height * numCameras,
0,0,width,height);
xv_image=NULL;
}
}
void QueryXv()
{
uint32_t num_adaptors;
int num_formats;
XvImageFormatValues *formats=NULL;
int i,j;
char xv_name[5];
XvQueryAdaptors(display,DefaultRootWindow(display),&num_adaptors,&info);
for(i=0;i<num_adaptors;i++) {
formats=XvListImageFormats(display,info[i].base_id,&num_formats);
for(j=0;j<num_formats;j++) {
xv_name[4]=0;
memcpy(xv_name,&formats[j].id,4);
if(formats[j].id==format) {
dc1394_log_error("using Xv format 0x%x %s %s",formats[j].id,xv_name,(formats[j].format==XvPacked)?"packed":"planar");
if(adaptor<0)adaptor=i;
}
}
}
XFree(formats);
if(adaptor<0)
dc1394_log_error("No suitable Xv adaptor found");
}
void cleanup(void) {
int i;
for (i=0; i < numCameras; i++) {
dc1394_video_set_transmission(cameras[i], DC1394_OFF);
dc1394_capture_stop(cameras[i]);
}
if ((void *)window != NULL)
XUnmapWindow(display,window);
if (display != NULL)
XFlush(display);
if (frame_buffer != NULL)
free( frame_buffer );
}
/* trap ctrl-c */
void signal_handler( int sig) {
signal( SIGINT, SIG_IGN);
cleanup();
exit(0);
}
int main(int argc,char *argv[])
{
XEvent xev;
XGCValues xgcv;
long background=0x010203;
int i, j;
dc1394_t * d;
dc1394camera_list_t * list;
get_options(argc,argv);
/* process options */
switch(fps) {
case 1: fps = DC1394_FRAMERATE_1_875; break;
case 3: fps = DC1394_FRAMERATE_3_75; break;
case 15: fps = DC1394_FRAMERATE_15; break;
case 30: fps = DC1394_FRAMERATE_30; break;
case 60: fps = DC1394_FRAMERATE_60; break;
default: fps = DC1394_FRAMERATE_7_5; break;
}
switch(res) {
case 1:
res = DC1394_VIDEO_MODE_640x480_YUV411;
device_width=640;
device_height=480;
format=XV_YUY2;
break;
case 2:
res = DC1394_VIDEO_MODE_640x480_RGB8;
device_width=640;
device_height=480;
format=XV_YUY2;
break;
default:
res = DC1394_VIDEO_MODE_320x240_YUV422;
device_width=320;
device_height=240;
format=XV_UYVY;
break;
}
dc1394error_t err;
d = dc1394_new ();
if (!d)
return 1;
err=dc1394_camera_enumerate (d, &list);
DC1394_ERR_RTN(err,"Failed to enumerate cameras");
if (list->num == 0) {
dc1394_log_error("No cameras found");
return 1;
}
j = 0;
for (i = 0; i < list->num; i++) {
if (j >= MAX_CAMERAS)
break;
cameras[j] = dc1394_camera_new (d, list->ids[i].guid);
if (!cameras[j]) {
dc1394_log_warning("Failed to initialize camera with guid %llx", list->ids[i].guid);
continue;
}
j++;
}
numCameras = j;
dc1394_camera_free_list (list);
if (numCameras == 0) {
dc1394_log_error("No cameras found");
exit (1);
}
/* setup cameras for capture */
for (i = 0; i < numCameras; i++) {
err=dc1394_video_set_iso_speed(cameras[i], DC1394_ISO_SPEED_400);
DC1394_ERR_CLN_RTN(err,cleanup(),"Could not set ISO speed");
err=dc1394_video_set_mode(cameras[i], res);
DC1394_ERR_CLN_RTN(err,cleanup(),"Could not set video mode");
err=dc1394_video_set_framerate(cameras[i], fps);
DC1394_ERR_CLN_RTN(err,cleanup(),"Could not set framerate");
err=dc1394_capture_setup(cameras[i],NUM_BUFFERS, DC1394_CAPTURE_FLAGS_DEFAULT);
DC1394_ERR_CLN_RTN(err,cleanup(),"Could not setup camera-\nmake sure that the video mode and framerate are\nsupported by your camera");
err=dc1394_video_set_transmission(cameras[i], DC1394_ON);
DC1394_ERR_CLN_RTN(err,cleanup(),"Could not start camera iso transmission");
}
fflush(stdout);
if (numCameras < 1) {
perror("no cameras found :(\n");
cleanup();
exit(-1);
}
switch(format){
case XV_YV12:
set_frame_length(device_width*device_height*3/2, numCameras);
break;
case XV_YUY2:
case XV_UYVY:
set_frame_length(device_width*device_height*2, numCameras);
break;
default:
dc1394_log_error("Unknown format set (internal error)");
exit(255);
}
/* make the window */
display=XOpenDisplay(getenv("DISPLAY"));
if(display==NULL) {
dc1394_log_error("Could not open display \"%s\"",getenv("DISPLAY"));
cleanup();
exit(-1);
}
QueryXv();
if ( adaptor < 0 ) {
cleanup();
exit(-1);
}
width=device_width;
height=device_height * numCameras;
window=XCreateSimpleWindow(display,DefaultRootWindow(display),0,0,width,height,0,
WhitePixel(display,DefaultScreen(display)),
background);
XSelectInput(display,window,StructureNotifyMask|KeyPressMask);
XMapWindow(display,window);
connection=ConnectionNumber(display);
gc=XCreateGC(display,window,0,&xgcv);
/* main event loop */
while(1){
for (i = 0; i < numCameras; i++) {
if (dc1394_capture_dequeue(cameras[i], DC1394_CAPTURE_POLICY_WAIT, &frames[i])!=DC1394_SUCCESS)
dc1394_log_error("Failed to capture from camera %d", i);
}
display_frames();
XFlush(display);
while(XPending(display)>0){
XNextEvent(display,&xev);
switch(xev.type){
case ConfigureNotify:
width=xev.xconfigure.width;
height=xev.xconfigure.height;
display_frames();
break;
case KeyPress:
switch(XKeycodeToKeysym(display,xev.xkey.keycode,0)){
case XK_q:
case XK_Q:
cleanup();
exit(0);
break;
case XK_comma:
case XK_less:
width=width/2;
height=height/2;
XResizeWindow(display,window,width,height);
display_frames();
break;
case XK_period:
case XK_greater:
width=2*width;
height=2*height;
XResizeWindow(display,window,width,height);
display_frames();
break;
case XK_0:
freeze = !freeze;
break;
case XK_1:
fps = DC1394_FRAMERATE_1_875;
for (i = 0; i < numCameras; i++)
dc1394_video_set_framerate(cameras[i], fps);
break;
case XK_2:
fps = DC1394_FRAMERATE_3_75;
for (i = 0; i < numCameras; i++)
dc1394_video_set_framerate(cameras[i], fps);
break;
case XK_4:
fps = DC1394_FRAMERATE_15;
for (i = 0; i < numCameras; i++)
dc1394_video_set_framerate(cameras[i], fps);
break;
case XK_5:
fps = DC1394_FRAMERATE_30;
for (i = 0; i < numCameras; i++)
dc1394_video_set_framerate(cameras[i], fps);
break;
case XK_3:
fps = DC1394_FRAMERATE_7_5;
for (i = 0; i < numCameras; i++)
dc1394_video_set_framerate(cameras[i], fps);
break;
}
break;
}
} /* XPending */
for (i = 0; i < numCameras; i++) {
if (frames[i])
dc1394_capture_enqueue (cameras[i], frames[i]);
}
} /* while not interrupted */
exit(0);
}