--- /dev/null
+/*
+ * OSS Redirector
+ * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#define _GNU_SOURCE
+
+#include "oss-redir.h"
+#include <sys/poll.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <linux/soundcard.h>
+
+static int initialized = 0;
+static int native_oss = 1;
+static char hal[64];
+
+int (*oss_pcm_open)(const char *pathname, int flags, ...);
+int (*oss_pcm_close)(int fd);
+ssize_t (*oss_pcm_read)(int fd, void *buf, size_t count);
+ssize_t (*oss_pcm_write)(int fd, const void *buf, size_t count);
+void * (*oss_pcm_mmap)(void *start, size_t length, int prot, int flags, int fd, off_t offset);
+int (*oss_pcm_munmap)(void *start, size_t length);
+int (*oss_pcm_ioctl)(int fd, unsigned long int request, ...);
+int (*oss_pcm_select_prepare)(int fd, fd_set *readfds, fd_set *writefds);
+int (*oss_pcm_select_result)(int fd, fd_set *readfds, fd_set *writefds);
+int (*oss_pcm_poll_fds)(int fd);
+int (*oss_pcm_poll_prepare)(int fd, struct pollfd *ufds);
+int (*oss_pcm_poll_result)(int fd, struct pollfd *ufds);
+
+int (*oss_mixer_open)(const char *pathname, int flags, ...);
+int (*oss_mixer_close)(int fd);
+int (*oss_mixer_ioctl)(int fd, unsigned long int request, ...);
+
+int native_pcm_select_prepare(int fd, fd_set *readfds, fd_set *writefds)
+{
+ if (fd < 0)
+ return -EINVAL;
+ if (readfds)
+ FD_SET(fd, readfds);
+ if (writefds)
+ FD_SET(fd, writefds);
+ return 0;
+}
+
+int native_pcm_select_result(int fd, fd_set *readfds, fd_set *writefds)
+{
+ int result = 0;
+
+ if (fd < 0)
+ return -EINVAL;
+ if (readfds && FD_ISSET(fd, readfds))
+ result |= OSS_WAIT_EVENT_READ;
+ if (writefds && FD_ISSET(fd, writefds))
+ result |= OSS_WAIT_EVENT_WRITE;
+ return result;
+}
+
+int native_pcm_poll_fds(int fd)
+{
+ if (fd < 0)
+ return -EINVAL;
+ return 1;
+}
+
+int native_pcm_poll_prepare(int fd, struct pollfd *ufds)
+{
+ if (fd < 0)
+ return -EINVAL;
+ ufds->fd = fd;
+ ufds->events = POLLIN | POLLOUT | POLLERR;
+ return 0;
+}
+
+int native_pcm_poll_result(int fd, struct pollfd *ufds)
+{
+ int result = 0;
+
+ if (fd < 0)
+ return -EINVAL;
+ if (ufds->events & POLLIN)
+ result |= OSS_WAIT_EVENT_READ;
+ if (ufds->events & POLLOUT)
+ result |= OSS_WAIT_EVENT_WRITE;
+ return result;
+}
+
+static void initialize()
+{
+ char *s = getenv("OSS_REDIRECTOR");
+ if (s) {
+ strncpy(hal, s, sizeof(hal));
+ hal[sizeof(hal)-1] = '\0';
+ if (!strcmp(hal, "oss"))
+ native_oss = 1;
+ } else {
+ native_oss = 1;
+ }
+ if (native_oss) {
+ oss_pcm_open = open;
+ oss_pcm_close = close;
+ oss_pcm_read = read;
+ oss_pcm_write = write;
+ oss_pcm_mmap = mmap;
+ oss_pcm_munmap = munmap;
+ oss_pcm_ioctl = ioctl;
+ oss_pcm_select_prepare = native_pcm_select_prepare;
+ oss_pcm_select_result = native_pcm_select_result;
+ oss_pcm_poll_fds = native_pcm_poll_fds;
+ oss_pcm_poll_prepare = native_pcm_poll_prepare;
+ oss_pcm_poll_result = native_pcm_poll_result;
+ oss_mixer_open = open;
+ oss_mixer_close = close;
+ oss_mixer_ioctl = ioctl;
+ }
+}
+
+static inline void check_initialized(void)
+{
+ if (!initialized)
+ initialize();
+}
--- /dev/null
+#ifndef __OSS_REDIR_H
+/*
+ * OSS Redirector
+ * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sys/select.h>
+#include <sys/types.h>
+
+struct pollfd;
+
+#define OSS_WAIT_EVENT_READ (1<<0)
+#define OSS_WAIT_EVENT_WRITE (1<<1)
+
+extern int (*oss_pcm_open)(const char *pathname, int flags, ...);
+extern int (*oss_pcm_close)(int fd);
+extern ssize_t (*oss_pcm_read)(int fd, void *buf, size_t count);
+extern ssize_t (*oss_pcm_write)(int fd, const void *buf, size_t count);
+extern void * (*oss_pcm_mmap)(void *start, size_t length, int prot, int flags, int fd, off_t offset);
+extern int (*oss_pcm_munmap)(void *start, size_t length);
+extern int (*oss_pcm_ioctl)(int fd, unsigned long int request, ...);
+extern int (*oss_pcm_select_prepare)(int fd, fd_set *readfds, fd_set *writefds);
+extern int (*oss_pcm_select_result)(int fd, fd_set *readfds, fd_set *writefds);
+extern int (*oss_pcm_poll_fds)(int fd);
+extern int (*oss_pcm_poll_prepare)(int fd, struct pollfd *ufds);
+extern int (*oss_pcm_poll_result)(int fd, struct pollfd *ufds);
+
+extern int (*oss_mixer_open)(const char *pathname, int flags, ...);
+extern int (*oss_mixer_close)(int fd);
+extern int (*oss_mixer_ioctl)(int fd, unsigned long int request, ...);
+
+
+#endif /* __OSS_REDIR_H */
git://git.alsa-project.org / alsa-oss.git / commitdiff