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update publisers

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lxsang 2020-12-28 21:39:55 +01:00
parent 5b6db3eb75
commit 1f2ef8db4d
3 changed files with 160 additions and 20 deletions
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dist/antd-publishers-0.1.0a.tar.gz vendored
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77
tunnel.c
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@ -11,11 +11,58 @@
#define MODULE_NAME "api"
static int guard_read(int fd, void* buffer, size_t size)
{
int n = 0;
int read_len;
int st;
while(n != (int)size)
{
read_len = (int)size - n;
st = read(fd,buffer + n,read_len);
if(st == -1)
{
M_ERROR(MODULE_NAME, "Unable to read from #%d: %s", fd, strerror(errno));
return -1;
}
if(st == 0)
{
M_ERROR(MODULE_NAME,"Endpoint %d is closed", fd);
return -1;
}
n += st;
}
return n;
}
static int guard_write(int fd, void* buffer, size_t size)
{
int n = 0;
int write_len;
int st;
while(n != (int)size)
{
write_len = (int)size - n;
st = write(fd,buffer + n,write_len);
if(st == -1)
{
M_ERROR(MODULE_NAME,"Unable to write to #%d: %s", fd, strerror(errno));
return -1;
}
if(st == 0)
{
M_ERROR(MODULE_NAME,"Endpoint %d is closed", fd);
return -1;
}
n += st;
}
return n;
}
static int msg_check_number(int fd, uint16_t number)
{
uint16_t value;
if(read(fd,&value,sizeof(value)) == -1)
if(guard_read(fd,&value,sizeof(value)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read integer value: %s", strerror(errno));
return -1;
@ -30,7 +77,7 @@ static int msg_check_number(int fd, uint16_t number)
static int msg_read_string(int fd, char* buffer, uint8_t max_length)
{
uint8_t size;
if(read(fd,&size,sizeof(size)) == -1)
if(guard_read(fd,&size,sizeof(size)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read string size: %s", strerror(errno));
return -1;
@ -40,7 +87,7 @@ static int msg_read_string(int fd, char* buffer, uint8_t max_length)
M_ERROR(MODULE_NAME, "String length exceeds the maximal value of %d", max_length);
return -1;
}
if(read(fd,buffer,size) == -1)
if(guard_read(fd,buffer,size) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read string to buffer: %s", strerror(errno));
return -1;
@ -51,7 +98,7 @@ static int msg_read_string(int fd, char* buffer, uint8_t max_length)
static uint8_t* msg_read_payload(int fd, uint32_t* size)
{
uint8_t* data;
if(read(fd,size,sizeof(*size)) == -1)
if(guard_read(fd,size,sizeof(*size)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read payload data size: %s", strerror(errno));
return NULL;
@ -67,7 +114,7 @@ static uint8_t* msg_read_payload(int fd, uint32_t* size)
M_ERROR(MODULE_NAME, "Unable to allocate memory for payload data: %s", strerror(errno));
return NULL;
}
if(read(fd,data,*size) == -1)
if(guard_read(fd,data,*size) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read payload data to buffer: %s", strerror(errno));
free(data);
@ -106,7 +153,7 @@ int msg_read(int fd, tunnel_msg_t* msg)
M_ERROR(MODULE_NAME, "Unable to check begin magic number");
return -1;
}
if(read(fd,&msg->header.type,sizeof(msg->header.type)) == -1)
if(guard_read(fd,&msg->header.type,sizeof(msg->header.type)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read msg type: %s", strerror(errno));
return -1;
@ -116,12 +163,12 @@ int msg_read(int fd, tunnel_msg_t* msg)
M_ERROR(MODULE_NAME, "Unknown msg type: %d", msg->header.type);
return -1;
}
if(read(fd, &msg->header.channel_id, sizeof(msg->header.channel_id)) == -1)
if(guard_read(fd, &msg->header.channel_id, sizeof(msg->header.channel_id)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read msg channel id");
return -1;
}
if(read(fd, &msg->header.client_id, sizeof(msg->header.client_id)) == -1)
if(guard_read(fd, &msg->header.client_id, sizeof(msg->header.client_id)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read msg client id");
return -1;
@ -147,32 +194,32 @@ int msg_write(int fd, tunnel_msg_t* msg)
{
// write begin magic number
uint16_t number = MSG_MAGIC_BEGIN;
if(write(fd,&number, sizeof(number)) == -1)
if(guard_write(fd,&number, sizeof(number)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write begin magic number: %s", strerror(errno));
return -1;
}
// write type
if(write(fd,&msg->header.type, sizeof(msg->header.type)) == -1)
if(guard_write(fd,&msg->header.type, sizeof(msg->header.type)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write msg type: %s", strerror(errno));
return -1;
}
// write channel id
if(write(fd,&msg->header.channel_id, sizeof(msg->header.channel_id)) == -1)
if(guard_write(fd,&msg->header.channel_id, sizeof(msg->header.channel_id)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write msg channel id: %s", strerror(errno));
return -1;
}
//write client id
if(write(fd,&msg->header.client_id, sizeof(msg->header.client_id)) == -1)
if(guard_write(fd,&msg->header.client_id, sizeof(msg->header.client_id)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write msg client id: %s", strerror(errno));
return -1;
}
// write payload len
if(write(fd,&msg->header.size, sizeof(msg->header.size)) == -1)
if(guard_write(fd,&msg->header.size, sizeof(msg->header.size)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write msg payload length: %s", strerror(errno));
return -1;
@ -180,14 +227,14 @@ int msg_write(int fd, tunnel_msg_t* msg)
// write payload data
if(msg->header.size > 0)
{
if(write(fd,msg->data, msg->header.size) == -1)
if(guard_write(fd,msg->data, msg->header.size) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write msg payload: %s", strerror(errno));
return -1;
}
}
number = MSG_MAGIC_END;
if(write(fd,&number, sizeof(number)) == -1)
if(guard_write(fd,&number, sizeof(number)) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write end magic number: %s", strerror(errno));
return -1;

93
v4l2cam/v4l2cam.c
View File

@ -13,6 +13,7 @@
#include <stdio.h>
#include <jpeglib.h>
#include <sys/ioctl.h>
#include <sys/timerfd.h>
#include "../tunnel.h"
@ -27,6 +28,7 @@ typedef struct
uint8_t jpeg_quality;
uint8_t *raw_buffer;
int fd;
int timerfd;
int raw_size;
char dev_name[DEV_SIZE];
uint8_t queued;
@ -313,6 +315,43 @@ static int cam_cleanup(cam_setting_t *opts, int close_fd)
{
(void)close(opts->fd);
}
if (close_fd && opts->timerfd > 0)
{
(void)close(opts->timerfd);
}
return 0;
}
static int cam_init_timer(cam_setting_t* opts)
{
long period = 0;
if(opts->timerfd != -1)
{
(void) close(opts->timerfd);
}
opts->timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
if (opts->timerfd == -1)
{
M_ERROR(MODULE_NAME, "Unable to create timerfd: %s", strerror(errno));
return -1;
}
else
{
period = (long) (1e9 / opts->fps);
M_LOG(MODULE_NAME, "Frame period set to %lu", period);
struct itimerspec ch_period =
{
.it_interval = {.tv_sec = 0, .tv_nsec = period},
.it_value = {.tv_sec = 0, .tv_nsec = period}, /* first wake-up = interval */
};
if (timerfd_settime(opts->timerfd, 0 /* no flags */, &ch_period, NULL) == -1)
{
M_ERROR(MODULE_NAME, "Unable to set framerate period: %s", strerror(errno));
(void)close(opts->timerfd);
opts->timerfd = -1;
return -1;
}
}
return 0;
}
static int cam_apply_setting(cam_setting_t *opts)
@ -349,6 +388,8 @@ static int cam_apply_setting(cam_setting_t *opts)
M_ERROR(MODULE_NAME, "Unable to query buffer");
return -1;
}
(void) cam_init_timer(opts);
return 0;
}
@ -379,6 +420,7 @@ int main(const int argc, const char **argv)
tunnel_msg_t msg;
int status;
fd_set fd_in;
uint64_t expirations_count;
void *fargv[2];
unsigned int offset = 0;
if (argc != 4)
@ -471,6 +513,12 @@ int main(const int argc, const char **argv)
video_setting.queued = 1;
}
}
if(clients == NULL && video_setting.timerfd != -1)
{
(void) close(video_setting.timerfd);
video_setting.timerfd = -1;
}
status = select(maxfd + 1, &fd_in, NULL, NULL, NULL);
switch (status)
{
@ -494,7 +542,23 @@ int main(const int argc, const char **argv)
{
case CHANNEL_SUBSCRIBE:
M_LOG(MODULE_NAME, "Client %d subscribes to the chanel", msg.header.client_id);
if(clients == NULL)
{
(void) cam_init_timer(&video_setting);
}
clients = bst_insert(clients, msg.header.client_id, NULL);
// send back the ctl message
msg.header.type = CHANNEL_CTRL;
msg.header.size = 6;
msg.data = (uint8_t *)buff;
(void)memcpy(buff, &video_setting.width, sizeof(video_setting.width));
(void)memcpy(buff + sizeof(video_setting.width), &video_setting.height, sizeof(video_setting.height));
buff[sizeof(video_setting.width) + sizeof(video_setting.height)] = video_setting.fps;
buff[sizeof(video_setting.width) + sizeof(video_setting.height) + 1] = video_setting.jpeg_quality;
if (msg_write(sock, &msg) == -1)
{
running = 0;
}
break;
case CHANNEL_UNSUBSCRIBE:
@ -532,6 +596,20 @@ int main(const int argc, const char **argv)
{
running = 0;
}
else
{
// send back the ctl message
msg.header.type = CHANNEL_CTRL;
msg.header.size = 6;
msg.data = (uint8_t *)buff;
(void)memcpy(buff, &video_setting.width, sizeof(video_setting.width));
(void)memcpy(buff + sizeof(video_setting.width), &video_setting.height, sizeof(video_setting.height));
buff[sizeof(video_setting.width) + sizeof(video_setting.height)] = video_setting.fps;
buff[sizeof(video_setting.width) + sizeof(video_setting.height) + 1] = video_setting.jpeg_quality;
fargv[0] = (void *)&msg;
fargv[1] = (void *)&sock;
bst_for_each(clients, send_data, fargv, 2);
}
}
}
else
@ -553,6 +631,21 @@ int main(const int argc, const char **argv)
{
running = 0;
}
else
{
// check timeout
if(video_setting.timerfd > 0)
{
if(read(video_setting.timerfd, &expirations_count, sizeof(expirations_count)) != (int)sizeof(expirations_count))
{
M_ERROR(MODULE_NAME, "Unable to read timer: %s", strerror(errno));
}
else if (expirations_count > 1u)
{
M_ERROR(MODULE_NAME, "LOOP OVERFLOW COUNT: %llu", expirations_count);
}
}
}
}
else
{