gui_common.c

   1 #include "para.h"
   2 #include "fd.h"
   3
   4 extern const char *status_item_list[NUM_STAT_ITEMS];
   5
   6 int para_open_audiod_pipe(char *cmd)
   7 {
   8         int fds[3] = {0, 1, 0};
   9         pid_t pid;
  10         int ret = para_exec_cmdline_pid(&pid, cmd, fds);
  11         if (ret < 0)
  12                 return ret;
  13         ret = mark_fd_nonblock(fds[1]);
  14         if (ret > 0)
  15                 return fds[1];
  16         close(fds[1]);
  17         return ret;
  18 }
  19
  20 int read_audiod_pipe(int fd, void (*line_handler)(char *) )
  21 {
  22         static char buf[4096];
  23         const ssize_t bufsize = sizeof(buf) - 1;
  24         static ssize_t loaded;
  25         ssize_t ret;
  26
  27         if (loaded >= bufsize)
  28                 loaded = 0;
  29         ret = read(fd, buf + loaded, bufsize - loaded);
  30         if (ret > 0) {
  31                 loaded += ret;
  32                 buf[loaded] = '\0';
  33                 loaded = for_each_line(buf, loaded, line_handler);
  34         }
  35         return ret;
  36 }