webcam_server.h

此代码为嵌入式图片服务器

/*********************************************************************
 * webcam_server                                                     *
 *                                                                   *
 * (c) 2002 Donn Morrison [e-mail]                       *
 *                                                                   *
 * code used from Gerd Knorr's xawtv (libng)                         *
 * - and -                                                           *
 * Cory Lueninghoener's gqcam                                        *
 *                                                                   *
 *    waits for connections from a viewer and sends                  *
 *    jpeg encoded captures as a live video feed                     *
 *                                                                   *
 *********************************************************************/

//#ifndef _WEBCAM_SERVER_H_INCLUDED_
//#define _WEBCAM_SERVER_H_INCLUDED_

struct image
{
	int bufsize;
	int width, height;
	unsigned char *buf;
};

struct RGB
{
	char r;
	char g;
	char b;
};

struct image *image_new(int width, int height);
void image_delete(struct image *img);
char *str_replace(const char *str, const char *find, const char *replace);

struct options
{
	int port;
	char *devfile;
	int jpeg_quality;
	int width;
	int height;
	int swap_rgb;
	int flip_horiz;
	int flip_vert;
	int rotate;
	int gamma;
	struct RGB text_fg;
	struct RGB text_bg;
	struct RGB trans;
	int text_xpos;
	int text_ypos;
	int palette;
};

struct status
{
	int num_users;
	int id_newest_img;
	int bad_grabs;
};

struct caminfo
{
	int dev;
	pthread_t pt_grab;
	struct options o;
	struct imagedata *data;
	struct video_capability vid_caps;
	struct video_window vid_win;
	struct video_picture vid_pic;
	struct video_mbuf vid_mbuf;
	struct video_mmap vid_v4lmmap;
	unsigned char *mmap;
};

struct imagedata
{
	char *jpeg_data;
	int len;
};

struct connection
{
        int socketfd;
        //struct sockaddr_in client_addr;
        struct caminfo *cam;
};

int handle_connection(struct connection *con);
char* merge(char*, int, char*);
int send_image(struct connection *con);
int create_and_listen(int port);
int open_cam(struct caminfo *cam, char *devfile);
int close_cam(struct caminfo *cam);
int set_cam_info(struct caminfo *cam);
void get_cam_info(struct caminfo *cam);
struct image *get_cam_image(struct caminfo *cam);
int grab_thread(struct caminfo *cam);
struct imagedata *peek(struct caminfo *cam);
//#endif