+++ /dev/null
-/* Evil evil evil hack to get OSS apps to cooperate with esd
- * Copyright (C) 1998, 1999 Manish Singh <yosh@gimp.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/*#define DSP_DEBUG */
-
-/* This lets you run multiple instances of x11amp by setting the X11AMPNUM
- environment variable. Only works on glibc2.
- */
-/* #define MULTIPLE_X11AMP */
-
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
-
-#ifdef DSP_DEBUG
-#define DPRINTF(format, args...) printf(format, ## args)
-#else
-#define DPRINTF(format, args...)
-#endif
-
-
-#include "config.h"
-
-#include <dlfcn.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdio.h>
-
-#include <errno.h>
-
-#ifdef HAVE_MACHINE_SOUNDCARD_H
-# include <machine/soundcard.h>
-#else
-# ifdef HAVE_SOUNDCARD_H
-# include <soundcard.h>
-# else
-# include <sys/soundcard.h>
-# endif
-#endif
-
-#include "gstosshelper.h"
-
-/* BSDI has this functionality, but not define :() */
-#if defined(RTLD_NEXT)
-#define REAL_LIBC RTLD_NEXT
-#else
-#define REAL_LIBC ((void *) -1L)
-#endif
-
-#if defined(__FreeBSD__) || defined(__bsdi__)
-typedef unsigned long request_t;
-#else
-typedef int request_t;
-#endif
-
-static int sndfd = -1;
-static int new_format = 1;
-static int fmt = AFMT_S16_LE;
-static int speed = 44100;
-static int stereo = 1;
-
-int
-open (const char *pathname, int flags, ...)
-{
- static int (*func) (const char *, int, mode_t) = NULL;
- va_list args;
- mode_t mode;
-
- if (!func)
- func = (int (*) (const char *, int, mode_t)) dlsym (REAL_LIBC, "open");
-
- va_start (args, flags);
- mode = va_arg (args, mode_t);
- va_end (args);
-
- if (!strcmp (pathname, "/dev/dsp")) {
- DPRINTF ("hijacking /dev/dsp open, and taking it to GStreamer...\n");
- return (sndfd = HELPER_MAGIC_SNDFD);
- }
- return (sndfd = (*func) (pathname, flags, mode));
-}
-
-static int
-dspctl (int fd, request_t request, void *argp)
-{
- int *arg = (int *) argp;
-
- DPRINTF ("hijacking /dev/dsp ioctl, and sending it to GStreamer "
- "(%d : %x - %p)\n", fd, request, argp);
-
- switch (request)
- {
- case SNDCTL_DSP_RESET:
- case SNDCTL_DSP_POST:
- break;
-
- case SNDCTL_DSP_SETFMT:
- fmt = *arg;
- new_format = 1;
- break;
-
- case SNDCTL_DSP_SPEED:
- speed = *arg;
- new_format = 1;
- break;
-
- case SNDCTL_DSP_STEREO:
- stereo = *arg;
- new_format = 1;
- break;
-
- case SNDCTL_DSP_GETBLKSIZE:
- *arg = 4096;
- break;
-
- case SNDCTL_DSP_GETFMTS:
- *arg = 0x38;
- break;
-
-#ifdef SNDCTL_DSP_GETCAPS
- case SNDCTL_DSP_GETCAPS:
- *arg = 0;
- break;
-#endif
-
- case SNDCTL_DSP_GETOSPACE:
- {
- audio_buf_info *bufinfo = (audio_buf_info *) argp;
- bufinfo->bytes = 4096;
- }
- break;
-
-
- default:
- DPRINTF ("unhandled /dev/dsp ioctl (%x - %p)\n", request, argp);
- break;
- }
-
- return 0;
-}
-
-void *
-mmap(void *start, size_t length, int prot , int flags, int fd, off_t offset)
-{
- static void * (*func) (void *, size_t, int, int, int, off_t) = NULL;
-
- if (!func)
- func = (void * (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap");
-
- if ((fd == sndfd) && (sndfd != -1))
- {
- DPRINTF("MMAP: oops... we're in trouble here. /dev/dsp mmap()ed. Not supported yet.\n");
- errno = EACCES;
- return (void *)-1; /* Better causing an error than silently not working, in this case */
- }
-
- return (*func) (start, length, prot, flags, fd, offset);
-}
-
-ssize_t
-write (int fd, const void *buf, size_t len)
-{
- static int (*func) (int, const void *, size_t) = NULL;
- command cmd;
-
- if (!func)
- func = (int (*) (int, const void *, size_t)) dlsym (REAL_LIBC, "write");
-
- if ((fd != sndfd) || (sndfd == -1))
- {
- return (*func) (fd, buf, len);
- }
-
- DPRINTF("WRITE: called for %d bytes\n", len);
-
- if (new_format) {
- new_format = 0;
-
- cmd.id = CMD_FORMAT;
- cmd.cmd.format.format = fmt;
- cmd.cmd.format.stereo = stereo;
- cmd.cmd.format.rate = speed;
-
- (*func) (HELPER_MAGIC_OUT, &cmd, sizeof(command));
- }
- cmd.id = CMD_DATA;
- cmd.cmd.length = len;
-
- (*func) (HELPER_MAGIC_OUT, &cmd, sizeof(command));
- (*func) (HELPER_MAGIC_OUT, buf, len);
-
- /*return (*func) (fd, buf, len); */
-
- return len;
-}
-
-int
-select (int n, fd_set *readfds, fd_set *writefds,
- fd_set *exceptfds, struct timeval *timeout)
-{
- static int (*func) (int, fd_set *, fd_set *, fd_set *, struct timeval *) = NULL;
-
- if (!func)
- func = (int (*) (int, fd_set *, fd_set *, fd_set *, struct timeval *)) dlsym (REAL_LIBC, "select");
-
- if (n == sndfd) {
- DPRINTF ("audiooss: hijacking /dev/dsp select() [output]\n");
- }
-
- return (*func) (n, readfds, writefds, exceptfds, timeout);
-}
-
-int
-dup2 (int oldfd, int newfd)
-{
- static int (*func) (int, int) = NULL;
-
- if (!func)
- func = (int (*) (int, int)) dlsym (REAL_LIBC, "dup2");
-
- if ((oldfd == sndfd) && (oldfd != -1) && (newfd != -1))
- {
- DPRINTF("dup2(%d,%d) (oldfd == sndfd) called\n", oldfd, newfd);
-
- /* Do not close(newfd) as that would mark it available for reuse by the system -
- * just tell the program that yes, we got the fd you asked for. Hackish. */
- sndfd = newfd;
- return newfd;
- }
- return (*func) (oldfd, newfd);
-}
-
-int
-ioctl (int fd, request_t request, ...)
-{
- static int (*func) (int, request_t, void *) = NULL;
- va_list args;
- void *argp;
-
- if (!func)
- func = (int (*) (int, request_t, void *)) dlsym (REAL_LIBC, "ioctl");
-
- va_start (args, request);
- argp = va_arg (args, void *);
- va_end (args);
-
- if (fd == sndfd)
- return dspctl (fd, request, argp);
-
- return (*func) (fd, request, argp);
-}
-
-int
-fcntl(int fd, int cmd, ...)
-{
- static int (*func) (int, int, void *) = NULL;
- va_list args;
- void *argp;
-
- if (!func)
- func = (int (*) (int, int, void *)) dlsym (REAL_LIBC, "fcntl");
-
- va_start (args, cmd);
- argp = va_arg (args, void *);
- va_end (args);
-
- if ((fd != -1) && (fd == sndfd))
- {
- DPRINTF ("hijacking /dev/dsp fcntl() "
- "(%d : %x - %p)\n", fd, cmd, argp);
- if (cmd == F_GETFL) return O_RDWR;
- if (cmd == F_GETFD) return sndfd;
- return 0;
- }
- else
- {
- return (*func) (fd, cmd, argp);
- }
- return 0;
-}
-
-int
-close (int fd)
-{
- static int (*func) (int) = NULL;
-
- if (!func)
- func = (int (*) (int)) dlsym (REAL_LIBC, "close");
-
- if (fd == sndfd)
- sndfd = -1;
-
- return (*func) (fd);
-}
-
-#ifdef MULTIPLE_X11AMP
-
-#include <socketbits.h>
-#include <sys/param.h>
-#include <sys/un.h>
-
-#define ENVSET "X11AMPNUM"
-
-int
-unlink (const char *filename)
-{
- static int (*func) (const char *) = NULL;
- char *num;
-
- if (!func)
- func = (int (*) (const char *)) dlsym (REAL_LIBC, "unlink");
-
- if (!strcmp (filename, "/tmp/X11Amp_CTRL") && (num = getenv (ENVSET)))
- {
- char buf[PATH_MAX] = "/tmp/X11Amp_CTRL";
- strcat (buf, num);
- return (*func) (buf);
- }
- else
- return (*func) (filename);
-}
-
-typedef int (*sa_func_t) (int, struct sockaddr *, int);
-
-static int
-sockaddr_mangle (sa_func_t func, int fd, struct sockaddr *addr, int len)
-{
- char *num;
-
- if (!strcmp (((struct sockaddr_un *) addr)->sun_path, "/tmp/X11Amp_CTRL")
- && (num = getenv(ENVSET)))
- {
- int ret;
- char buf[PATH_MAX] = "/tmp/X11Amp_CTRL";
-
- struct sockaddr_un *new_addr = malloc (len);
-
- strcat (buf, num);
- memcpy (new_addr, addr, len);
- strcpy (new_addr->sun_path, buf);
-
- ret = (*func) (fd, (struct sockaddr *) new_addr, len);
-
- free (new_addr);
- return ret;
- }
- else
- return (*func) (fd, addr, len);
-}
-
-int
-bind (int fd, struct sockaddr *addr, int len)
-{
- static sa_func_t func = NULL;
-
- if (!func)
- func = (sa_func_t) dlsym (REAL_LIBC, "bind");
- return sockaddr_mangle (func, fd, addr, len);
-}
-
-int
-connect (int fd, struct sockaddr *addr, int len)
-{
- static sa_func_t func = NULL;
-
- if (!func)
- func = (sa_func_t) dlsym (REAL_LIBC, "connect");
- return sockaddr_mangle (func, fd, addr, len);
-}
-
-#endif /* MULTIPLE_X11AMP */
-
-#else /* __GNUC__ */
-static char *ident = NULL;
-
-void
-nogcc (void)
-{
- ident = NULL;
-}
-
-#endif /* __GNUC__ */
projects / platform / upstream / gst-plugins-good.git / commitdiff