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pktriggercord-servermode.c
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pktriggercord-servermode.c
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/*
pkTriggerCord
Remote control of Pentax DSLR cameras.
Copyright (C) 2011-2019 Andras Salamon <andras.salamon@melda.info>
based on:
pslr-shoot
Command line remote control of Pentax DSLR cameras.
Copyright (C) 2009 Ramiro Barreiro <ramiro_barreiro69@yahoo.es>
With fragments of code from PK-Remote by Pontus Lidman.
<https://sourceforge.net/projects/pkremote>
This program 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 3 of the License, or
(at your option) any later version.
This program 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 General Public License
and GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef WIN32
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#endif
#include <stdio.h>
#include <sys/time.h>
#include <stdlib.h>
#include <unistd.h>
#include "pslr.h"
#include "pslr_lens.h"
double timeval_diff_sec(struct timeval *t2, struct timeval *t1) {
//DPRINT("tv2 %ld %ld t1 %ld %ld\n", t2->tv_sec, t2->tv_usec, t1->tv_sec, t1->tv_usec);
return (t2->tv_usec - t1->tv_usec) / 1000000.0 + (t2->tv_sec - t1->tv_sec);
}
void camera_close(pslr_handle_t camhandle) {
pslr_disconnect(camhandle);
pslr_shutdown(camhandle);
}
pslr_handle_t camera_connect( char *model, char *device, int timeout, char *error_message ) {
struct timeval prev_time;
struct timeval current_time;
pslr_handle_t camhandle;
int r;
gettimeofday(&prev_time, NULL);
while (!(camhandle = pslr_init( model, device ))) {
gettimeofday(¤t_time, NULL);
DPRINT("diff: %f\n", timeval_diff_sec(¤t_time, &prev_time));
if ( timeout == 0 || timeout > timeval_diff_sec(¤t_time, &prev_time)) {
DPRINT("sleep 1 sec\n");
sleep_sec(1);
} else {
snprintf(error_message, 1000, "%d %ds timeout exceeded\n", 1, timeout);
return NULL;
}
}
DPRINT("before connect\n");
if (camhandle) {
if ((r=pslr_connect(camhandle)) ) {
if ( r != -1 ) {
snprintf(error_message, 1000, "%d Cannot connect to Pentax camera. Please start the program as root.\n",1);
} else {
snprintf(error_message, 1000, "%d Unknown Pentax camera found.\n",1);
}
return NULL;
}
}
return camhandle;
}
#ifndef WIN32
int client_sock;
void write_socket_answer( char *answer ) {
ssize_t r = write(client_sock , answer , strlen(answer));
if (r != strlen(answer)) {
fprintf(stderr, "write(answer) failed");
}
}
void write_socket_answer_bin( uint8_t *answer, uint32_t length ) {
ssize_t r = write(client_sock , answer , length);
if (r != length) {
fprintf(stderr, "write(answer) failed");
}
}
char *is_string_prefix(char *str, char *prefix) {
if ( !strncmp(str, prefix, strlen(prefix) ) ) {
if ( strlen(str) <= strlen(prefix)+1 ) {
return str;
} else {
return str+strlen(prefix)+1;
}
} else {
return NULL;
}
}
bool check_camera(pslr_handle_t camhandle) {
if ( !camhandle ) {
write_socket_answer("1 No camera connected\n");
return false;
} else {
return true;
}
}
void strip(char *s) {
char *p2 = s;
while (*s != '\0') {
if (*s != '\r' && *s != '\n') {
*p2++ = *s++;
} else {
++s;
}
}
*p2 = '\0';
}
int servermode_socket(int servermode_timeout) {
int socket_desc, c , read_size;
struct sockaddr_in server , client;
char client_message[2000];
char *arg;
char buf[2100];
pslr_handle_t camhandle=NULL;
pslr_status status;
char C;
float F = 0;
pslr_rational_t shutter_speed = {0, 0};
uint32_t iso = 0;
uint32_t auto_iso_min = 0;
uint32_t auto_iso_max = 0;
//Create socket
socket_desc = socket(AF_INET , SOCK_STREAM , 0);
if (socket_desc == -1) {
fprintf(stderr, "Could not create socket");
}
int enable = 1;
if (setsockopt(socket_desc, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0) {
fprintf(stderr, "setsockopt(SO_REUSEADDR) failed");
}
DPRINT("Socket created\n");
//Prepare the sockaddr_in structure
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons( 8888 );
//Bind
if ( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0) {
fprintf(stderr, "bind failed. Error");
return 1;
}
DPRINT("bind done\n");
//Listen
listen(socket_desc , 3);
//Accept and incoming connection
DPRINT("Waiting for incoming connections...\n");
c = sizeof(struct sockaddr_in);
while ( true ) {
fd_set rfds;
struct timeval tv;
int retval;
FD_ZERO(&rfds);
FD_SET(socket_desc, &rfds);
tv.tv_sec = servermode_timeout;
tv.tv_usec = 0;
retval = select(socket_desc+1, &rfds, NULL, NULL, &tv);
if (retval == -1) {
DPRINT("select error\n");
exit(1);
} else if (retval) {
client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
if (client_sock < 0) {
fprintf(stderr, "accept failed");
return 1;
}
DPRINT("Connection accepted\n");
} else {
DPRINT("Timeout\n");
close(socket_desc);
exit(0);
}
//Receive a message from client
while ( (read_size = recv(client_sock , client_message , 2000 , 0)) > 0 ) {
client_message[read_size]='\0';
strip( client_message );
DPRINT(":%s:\n",client_message);
if ( !strcmp(client_message, "stopserver" ) ) {
if ( camhandle ) {
camera_close(camhandle);
}
write_socket_answer("0\n");
exit(0);
} else if ( !strcmp(client_message, "disconnect" ) ) {
if ( camhandle ) {
camera_close(camhandle);
}
write_socket_answer("0\n");
} else if ( (arg = is_string_prefix( client_message, "echo")) != NULL ) {
sprintf( buf, "0 %.100s\n", arg);
write_socket_answer(buf);
} else if ( (arg = is_string_prefix( client_message, "usleep")) != NULL ) {
int microseconds = atoi(arg);
usleep(microseconds);
write_socket_answer("0\n");
} else if ( !strcmp(client_message, "connect") ) {
if ( camhandle ) {
write_socket_answer("0\n");
} else if ( (camhandle = camera_connect( NULL, NULL, -1, buf )) ) {
write_socket_answer("0\n");
} else {
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "update_status") ) {
if ( check_camera(camhandle) ) {
if ( !pslr_get_status(camhandle, &status) ) {
sprintf( buf, "%d\n", 0);
} else {
sprintf( buf, "%d\n", 1);
}
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_camera_name") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %s\n", 0, pslr_camera_name(camhandle));
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_lens_name") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %s\n", 0, get_lens_name(status.lens_id1, status.lens_id2));
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_current_shutter_speed") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %d/%d\n", 0, status.current_shutter_speed.nom, status.current_shutter_speed.denom);
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_current_aperture") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %s\n", 0, format_rational( status.current_aperture, "%.1f"));
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_current_iso") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %d\n", 0, status.current_iso);
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_bufmask") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %d\n", 0, status.bufmask);
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_auto_bracket_mode") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %d\n", 0, status.auto_bracket_mode);
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "get_auto_bracket_picture_count") ) {
if ( check_camera(camhandle) ) {
sprintf(buf, "%d %d\n", 0, status.auto_bracket_picture_count);
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "focus") ) {
if ( check_camera(camhandle) ) {
pslr_focus(camhandle);
sprintf(buf, "%d\n", 0);
write_socket_answer(buf);
}
} else if ( !strcmp(client_message, "shutter") ) {
if ( check_camera(camhandle) ) {
pslr_shutter(camhandle);
sprintf(buf, "%d\n", 0);
write_socket_answer(buf);
}
} else if ( (arg = is_string_prefix( client_message, "delete_buffer")) != NULL ) {
int bufno = atoi(arg);
if ( check_camera(camhandle) ) {
pslr_delete_buffer(camhandle,bufno);
sprintf(buf, "%d\n", 0);
write_socket_answer(buf);
}
} else if ( (arg = is_string_prefix( client_message, "get_preview_buffer")) != NULL ) {
int bufno = atoi(arg);
if ( check_camera(camhandle) ) {
uint8_t *pImage;
uint32_t imageSize;
if ( pslr_get_buffer(camhandle, bufno, PSLR_BUF_PREVIEW, 4, &pImage, &imageSize) ) {
sprintf(buf, "%d %d\n", 1, imageSize);
write_socket_answer(buf);
} else {
sprintf(buf, "%d %d\n", 0, imageSize);
write_socket_answer(buf);
write_socket_answer_bin(pImage, imageSize);
}
}
} else if ( (arg = is_string_prefix( client_message, "get_buffer")) != NULL ) {
int bufno = atoi(arg);
if ( check_camera(camhandle) ) {
uint32_t imageSize;
if ( pslr_buffer_open(camhandle, bufno, PSLR_BUF_DNG, 0) ) {
sprintf(buf, "%d\n", 1);
write_socket_answer(buf);
} else {
imageSize = pslr_buffer_get_size(camhandle);
sprintf(buf, "%d %d\n", 0, imageSize);
write_socket_answer(buf);
uint32_t current = 0;
while (1) {
uint32_t bytes;
uint8_t buf[65536];
bytes = pslr_buffer_read(camhandle, buf, sizeof (buf));
if (bytes == 0) {
break;
}
write_socket_answer_bin( buf, bytes);
current += bytes;
}
pslr_buffer_close(camhandle);
}
}
} else if ( (arg = is_string_prefix( client_message, "set_shutter_speed")) != NULL ) {
if ( check_camera(camhandle) ) {
// TODO: merge with pktriggercord-cli shutter speed parse
if (sscanf(arg, "1/%d%c", &shutter_speed.denom, &C) == 1) {
shutter_speed.nom = 1;
sprintf(buf, "%d %d %d\n", 0, shutter_speed.nom, shutter_speed.denom);
} else if ((sscanf(arg, "%f%c", &F, &C)) == 1) {
if (F < 2) {
F = F * 10;
shutter_speed.denom = 10;
shutter_speed.nom = F;
} else {
shutter_speed.denom = 1;
shutter_speed.nom = F;
}
sprintf(buf, "%d %d %d\n", 0, shutter_speed.nom, shutter_speed.denom);
} else {
shutter_speed.nom = 0;
sprintf(buf,"1 Invalid shutter speed value.\n");
}
if (shutter_speed.nom) {
pslr_set_shutter(camhandle, shutter_speed);
}
write_socket_answer(buf);
}
} else if ( (arg = is_string_prefix( client_message, "set_iso")) != NULL ) {
if ( check_camera(camhandle) ) {
// TODO: merge with pktriggercord-cli shutter iso
if (sscanf(arg, "%d-%d%c", &auto_iso_min, &auto_iso_max, &C) != 2) {
auto_iso_min = 0;
auto_iso_max = 0;
iso = atoi(arg);
} else {
iso = 0;
}
if (iso==0 && auto_iso_min==0) {
sprintf(buf,"1 Invalid iso value.\n");
} else {
pslr_set_iso(camhandle, iso, auto_iso_min, auto_iso_max);
sprintf(buf, "%d %d %d-%d\n", 0, iso, auto_iso_min, auto_iso_max);
}
write_socket_answer(buf);
}
} else {
write_socket_answer("1 Invalid servermode command\n");
}
}
if (read_size == 0) {
DPRINT("Client disconnected\n");
fflush(stdout);
} else if (read_size == -1) {
fprintf(stderr, "recv failed\n");
}
}
return 0;
}
#endif