/**
- * \defgroup Global Global defines
- * Global defines
+ * \file include/global.h
+ * \brief Application interface library for the ALSA driver
+ * \author Jaroslav Kysela <perex@perex.cz>
+ * \author Abramo Bagnara <abramo@alsa-project.org>
+ * \author Takashi Iwai <tiwai@suse.de>
+ * \date 1998-2001
+ *
+ * Application interface library for the ALSA driver
+ */
+/*
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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
+ *
+ */
+
+#ifndef __ALSA_GLOBAL_H_
+#define __ALSA_GLOBAL_H_
+
+/* for timeval and timespec */
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \defgroup Global Global defines and functions
+ * Global defines and functions.
+ * \par
+ * The ALSA library implementation uses these macros and functions.
+ * Most applications probably do not need them.
* \{
*/
-#ifdef SNDRV_LITTLE_ENDIAN
-#define SND_LITTLE_ENDIAN SNDRV_LITTLE_ENDIAN
+const char *snd_asoundlib_version(void);
+
+#ifndef ATTRIBUTE_UNUSED
+/** do not print warning (gcc) when function parameter is not used */
+#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
#endif
-#ifdef SNDRV_BIG_ENDIAN
-#define SND_BIG_ENDIAN SNDRV_BIG_ENDIAN
+#ifdef PIC /* dynamic build */
+
+/** \hideinitializer \brief Helper macro for #SND_DLSYM_BUILD_VERSION. */
+#define __SND_DLSYM_VERSION(name, version) _ ## name ## version
+/**
+ * \hideinitializer
+ * \brief Appends the build version to the name of a versioned dynamic symbol.
+ */
+#define SND_DLSYM_BUILD_VERSION(name, version) char __SND_DLSYM_VERSION(name, version);
+
+#else /* static build */
+
+struct snd_dlsym_link {
+ struct snd_dlsym_link *next;
+ const char *dlsym_name;
+ const void *dlsym_ptr;
+};
+
+extern struct snd_dlsym_link *snd_dlsym_start;
+
+/** \hideinitializer \brief Helper macro for #SND_DLSYM_BUILD_VERSION. */
+#define __SND_DLSYM_VERSION(prefix, name, version) _ ## prefix ## name ## version
+/**
+ * \hideinitializer
+ * \brief Appends the build version to the name of a versioned dynamic symbol.
+ */
+#define SND_DLSYM_BUILD_VERSION(name, version) \
+ static struct snd_dlsym_link __SND_DLSYM_VERSION(snd_dlsym_, name, version); \
+ void __SND_DLSYM_VERSION(snd_dlsym_constructor_, name, version) (void) __attribute__ ((constructor)); \
+ void __SND_DLSYM_VERSION(snd_dlsym_constructor_, name, version) (void) { \
+ __SND_DLSYM_VERSION(snd_dlsym_, name, version).next = snd_dlsym_start; \
+ __SND_DLSYM_VERSION(snd_dlsym_, name, version).dlsym_name = # name; \
+ __SND_DLSYM_VERSION(snd_dlsym_, name, version).dlsym_ptr = (void *)&name; \
+ snd_dlsym_start = &__SND_DLSYM_VERSION(snd_dlsym_, name, version); \
+ }
+
#endif
-/** \} */
+#ifndef __STRING
+/** \brief Return 'x' argument as string */
+#define __STRING(x) #x
+#endif
-/** Async notification client handler */
+/** \brief Returns the version of a dynamic symbol as a string. */
+#define SND_DLSYM_VERSION(version) __STRING(version)
+
+void *snd_dlopen(const char *file, int mode);
+void *snd_dlsym(void *handle, const char *name, const char *version);
+int snd_dlclose(void *handle);
+
+
+/** \brief alloca helper macro. */
+#define __snd_alloca(ptr,type) do { *ptr = (type##_t *) alloca(type##_sizeof()); memset(*ptr, 0, type##_sizeof()); } while (0)
+
+/**
+ * \brief Internal structure for an async notification client handler.
+ *
+ * The ALSA library uses a pointer to this structure as a handle to an async
+ * notification object. Applications don't access its contents directly.
+ */
typedef struct _snd_async_handler snd_async_handler_t;
-/** Async notification callback */
+/**
+ * \brief Async notification callback.
+ *
+ * See the #snd_async_add_handler function for details.
+ */
typedef void (*snd_async_callback_t)(snd_async_handler_t *handler);
int snd_async_add_handler(snd_async_handler_t **handler, int fd,
snd_async_callback_t callback, void *private_data);
int snd_async_del_handler(snd_async_handler_t *handler);
int snd_async_handler_get_fd(snd_async_handler_t *handler);
+int snd_async_handler_get_signo(snd_async_handler_t *handler);
void *snd_async_handler_get_callback_private(snd_async_handler_t *handler);
+
+struct snd_shm_area *snd_shm_area_create(int shmid, void *ptr);
+struct snd_shm_area *snd_shm_area_share(struct snd_shm_area *area);
+int snd_shm_area_destroy(struct snd_shm_area *area);
+
+int snd_user_file(const char *file, char **result);
+
+#ifdef __GLIBC__
+#if !defined(_POSIX_C_SOURCE) && !defined(_POSIX_SOURCE)
+struct timeval {
+ time_t tv_sec; /* seconds */
+ long tv_usec; /* microseconds */
+};
+
+struct timespec {
+ time_t tv_sec; /* seconds */
+ long tv_nsec; /* nanoseconds */
+};
+#endif
+#endif
+
+/** Timestamp */
+typedef struct timeval snd_timestamp_t;
+/** Hi-res timestamp */
+typedef struct timespec snd_htimestamp_t;
+
+/** \} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ALSA_GLOBAL_H */
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