kopia lustrzana https://github.com/F5OEO/csdr
Working hard on ddcd.
ha7ilm
rodzic
4380bec6fa
commit
71e80ea809
1
Makefile
1
Makefile
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@ -67,6 +67,7 @@ install: all
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install -m 0755 libcsdr.so /usr/lib
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install -m 0755 csdr /usr/bin
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install -m 0755 csdr-fm /usr/bin
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install -m 0755 ddcd /usr/bin
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ldconfig
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uninstall:
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rm /usr/lib/libcsdr.so /usr/bin/csdr /usr/bin/csdr-fm
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144
ddcd.cpp
144
ddcd.cpp
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@ -37,9 +37,16 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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int host_port = 0;
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char host_address[100] = "127.0.0.1";
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int decimation = 0;
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float transition_bw = 0.05;
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int bufsize = 1024;
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int bufsizeall;
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int pipe_max_size;
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char ddc_method_str[100] = "td";
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ddc_method_t ddc_method;
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pid_t main_dsp_proc;
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pid_t pgrp;
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int input_pipe = STDIN_FILENO; //can be stdin, or the stdout of main_subprocess
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char* buf;
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int set_nonblocking(int fd)
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@ -71,7 +78,9 @@ int main(int argc, char* argv[])
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{"port", required_argument, 0, 'p' },
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{"address", required_argument, 0, 'a' },
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{"decimation", required_argument, 0, 'd' },
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{"bufsize", required_argument, 0, 'b' }
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{"bufsize", required_argument, 0, 'b' },
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{"method", required_argument, 0, 'm' }
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{"transition", required_argument, 0, 't' }
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};
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c = getopt_long(argc, argv, "p:a:d:b:", long_options, &option_index);
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if(c==-1) break;
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@ -90,17 +99,38 @@ int main(int argc, char* argv[])
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case 'b':
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bufsize=atoi(optarg);
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break;
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case 'm':
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host_address[100-1]=0;
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strncpy(ddc_method_str,optarg,100-1);
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break;
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case 't':
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sscanf(optarg,"%g",&transition_bw);
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break;
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case 0:
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case '?':
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case ':':
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default:
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printf(" 0%o ??\n", c);
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default:;
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}
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}
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if(!decimation) error_exit(MSG_START "missing required command line argument, --decimation.\n");
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if(!host_port) error_exit(MSG_START "missing required command line argument, --port.\n");
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if(!decimation) print_exit(MSG_START "missing required command line argument, --decimation.\n");
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if(!host_port) print_exit(MSG_START "missing required command line argument, --port.\n");
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if(decimation<0) print_exit(MSG_START "invalid value for --decimation (should be >0).\n");
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if(decimation==1) fprintf(stderr, MSG_START "decimation = 1, just copying raw samples.\n");
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if(transition_bw<0||transition_bw>0.5) print_exit(MSG_START "invalid value for --transition (should be between 0 and 0.5).\n");
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if(!strcmp(ddc_method_str,"td"))
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{
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ddc_method = M_TD;
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fprintf(stderr, MSG_START "method is M_TD (default).\n");
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}
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else if (!strcmp(ddc_method_str,"fastddc"))
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{
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ddc_method = M_FASTDDC;
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fprintf(stderr, MSG_START "method is M_FASTDDC.\n");
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}
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else print_exit(MSG_START "invalid parameter given to --method.\n");
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struct sockaddr_in addr_host;
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int listen_socket;
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std::vector<client_t*> clients;
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@ -109,7 +139,7 @@ int main(int argc, char* argv[])
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int sockopt = 1;
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if( setsockopt(listen_socket, SOL_SOCKET, SO_REUSEADDR, (char *)&sockopt, sizeof(sockopt)) == -1 )
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error_exit(MSG_START "cannot set SO_REUSEADDR.\n"); //the best description on SO_REUSEADDR ever: http://stackoverflow.com/a/14388707/3182453
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error_exit(MSG_START "cannot set SO_REUSEADDR"); //the best description on SO_REUSEADDR ever: http://stackoverflow.com/a/14388707/3182453
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memset(&addr_host,'0',sizeof(addr_host));
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addr_host.sin_family=AF_INET;
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@ -117,13 +147,13 @@ int main(int argc, char* argv[])
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addr_host.sin_addr.s_addr = INADDR_ANY;
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if( (addr_host.sin_addr.s_addr=inet_addr(host_address)) == INADDR_NONE )
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error_exit(MSG_START "invalid host address.\n");
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error_exit(MSG_START "invalid host address");
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if( bind(listen_socket, (struct sockaddr*) &addr_host, sizeof(addr_host)) < 0 )
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error_exit(MSG_START "cannot bind() address to the socket.\n");
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error_exit(MSG_START "cannot bind() address to the socket");
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if( listen(listen_socket, 10) == -1 )
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error_exit(MSG_START "cannot listen() on socket.\n");
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error_exit(MSG_START "cannot listen() on socket");
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fprintf(stderr,MSG_START "listening on %s:%d\n", inet_ntoa(addr_host.sin_addr), host_port);
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@ -131,18 +161,9 @@ int main(int argc, char* argv[])
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socklen_t addr_cli_len = sizeof(addr_cli);
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int new_socket;
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//Set stdin and listen_socket to non-blocking
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if(set_nonblocking(STDIN_FILENO) || set_nonblocking(listen_socket))
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error_exit(MSG_START "cannot set_nonblocking().\n");
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bufsizeall = bufsize*sizeof(char);
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buf = (char*)malloc(bufsizeall);
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FD_ZERO(&select_fds);
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FD_SET(listen_socket, &select_fds);
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FD_SET(STDIN_FILENO, &select_fds);
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int highfd = ((listen_socket>STDIN_FILENO)?listen_socket:STDIN_FILENO) + 1;
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FILE* tempfile = fopen("/proc/sys/fs/pipe-max-size","r");
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if(!tempfile)
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{
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@ -159,6 +180,46 @@ int main(int argc, char* argv[])
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// perror("failed to fcntl(STDIN_FILENO, F_SETPIPE_SZ, ...)");
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}
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//We'll see if it is a good idea:
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setpgrp();
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pgrp = getpgrp();
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//Start DSP subprocess from the main process if required
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char main_subprocess_cmd_buf[500];
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pid_t main_subprocess_pid = 0;
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int pipe_m2s_ctl[2]; //main to subprocess :: control channel
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int pipe_s2m[2]; //subprocess to main
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if(pipe(pipe_m2s_ctl)) error_exit(MSG_START "couldn't create pipe_m2s_ctl");
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if(pipe(pipe_s2m)) error_exit(MSG_START "couldn't create pipe_s2m");
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if(decimation!=1)
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{
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switch(ddc_method)
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{
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case M_TD:
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break;
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case M_FASTDDC:
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sprintf(main_subprocess_cmd_buf, subprocess_args_fastddc_1, decimation, tansition_bw);
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close(STDIN_FILENO); // redirect stdin to the stdin of the subprocess
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main_subprocess_pid = run_subprocess( main_subprocess_cmd_buf, 0, pipe_s2m );
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break;
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}
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}
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int highfd = 0;
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FD_ZERO(&select_fds);
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FD_SET(listen_socket, &select_fds);
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maxfd(&highfd, listen_socket);
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if(main_subprocess_pid) input_pipe = pipe_s2m[1]; //else STDIN_FILENO
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FD_SET(input_pipe, &select_fds);
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maxfd(&highfd, input_pipe);
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//Set stdin and listen_socket to non-blocking
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if(set_nonblocking(input_pipe) || set_nonblocking(listen_socket)) //don't do it before subprocess fork!
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error_exit(MSG_START "cannot set_nonblocking()");
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for(;;)
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{
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//Let's wait until there is any new data to read, or any new connection!
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@ -173,17 +234,17 @@ int main(int argc, char* argv[])
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this_client->socket = new_socket;
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if(pipe(this_client->pipefd) == -1)
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{
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perror(MSG_START "cannot open new pipe() for the client.\n");
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perror(MSG_START "cannot open new pipe() for the client");
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continue;
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}
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if(fcntl(this_client->pipefd[1], F_SETPIPE_SZ, pipe_max_size) == -1)
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perror("failed to F_SETPIPE_SZ for the client pipe!");
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perror("failed to F_SETPIPE_SZ for the client pipe");
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if(this_client->pid = fork())
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{
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//We're the parent
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set_nonblocking(this_client->pipefd[1]);
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clients.push_back(this_client);
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printf("client pid: %d\n", this_client->pid);
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fprintf(stderr, MSG_START "client pid: %d\n", this_client->pid);
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}
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else
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{
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@ -193,7 +254,7 @@ int main(int argc, char* argv[])
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}
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}
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int retval = read(STDIN_FILENO, buf, bufsizeall);
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int retval = read(input_pipe, buf, bufsizeall);
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if(retval==0)
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{
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//end of input stream, close clients and exit
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@ -236,7 +297,31 @@ int main(int argc, char* argv[])
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//
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}
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return 0;
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return 0;
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}
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pid_t run_subprocess(char* cmd, int* pipe_in, int* pipe_out)
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{
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pid_t pid = fork();
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if(p < 0) return 0; //fork failed
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if(p==0)
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{
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//We're the subprocess
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if(fcntl(pipe_in[1], F_SETPIPE_SZ, pipe_max_size) == -1) perror("Failed to F_SETPIPE_SZ in run_subprocess()");
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if(pipe_in)
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{
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close(pipe_in[1]);
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dup2(pipe_in[0], STDIN_FILENO);
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}
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if(pipe_out)
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{
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close(pipe_out[0]);
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dup2(pipe_out[1], STDOUT_FILENO);
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}
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execl("/bin/bash","bash","-c",cmd, 0);
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error_exit(MSG_START "run_subprocess failed to execute command")
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}
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else return pid;
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}
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void print_client(client_t* client, const char* what)
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@ -251,7 +336,7 @@ void client_cleanup()
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void client()
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{
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fprintf(stderr, "I'm the client\n");
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print_client(this_client, "client process forked.");
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for(;;)
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{
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read(this_client->pipefd[0],buf,bufsizeall);
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@ -268,3 +353,14 @@ void error_exit(const char* why)
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perror(why);
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exit(1);
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}
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void print_exit(const char* why)
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{
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fprintf(stderr, "%s", why);
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exit(1);
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}
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void maxfd(int* maxfd, int fd)
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{
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if(fd>*maxfd) *maxfd=fd+1;
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}
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21
ddcd.h
21
ddcd.h
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@ -23,10 +23,31 @@ typedef struct client_s
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pid_t pid;
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int pipefd[2];
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int error;
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pid_t dsp_proc;
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} client_t;
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void client();
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void error_exit(const char* why);
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void print_exit(const char* why);
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void print_client(client_t* client, const char* what);
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int proc_exists(pid_t pid);
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void run_subprocess(char* cmd, int* pipe_in, int* pipe_out);
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void maxfd(int* maxfd, int fd);
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typedef enum ddc_method_e
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{
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M_TD,
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M_FASTDDC
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} ddc_method_t;
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const char subprocess_cmd_td[] = "csdr "
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#ifdef NEON_OPTS
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"shift_addfast_cc"
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#else
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"shift_unroll_cc"
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#endif
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" --pipe %d,%d | csdr fir_decimate_cc %d %g" };
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const char subprocess_args_fastddc_1[] = "csdr fastddc_fwd_cc %d %g";
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const char subprocess_args_fastddc_2[] = "csdr fastddc_inv_cc %d --pipe %d,%d %g";
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