Imported Upstream version 4.2-build2006upstream/4.2-build2006upstream

1 files changed, 81 insertions, 0 deletions

diff --git a/kernel/drv/oss_userdev/userdev.h b/kernel/drv/oss_userdev/userdev.h
new file mode 100644
index 0000000..1ed1040
--- /dev/null
+++ b/kernel/drv/oss_userdev/userdev.h
@@ -0,0 +1,81 @@
+/*
+ * Purpose: Definition file for the oss_userdev driver
+ *
+ */
+/*
+ *
+ * This file is part of Open Sound System.
+ *
+ * Copyright (C) 4Front Technologies 1996-2008.
+ *
+ * This this source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ */
+#define MAX_RATE 	192000
+#define MAX_CHANNELS	64
+#define SUPPORTED_FORMATS	(AFMT_S16_NE|AFMT_S32_NE)
+
+typedef struct _userdev_devc_t userdev_devc_t;
+typedef struct _userdev_portc_t userdev_portc_t;
+
+struct _userdev_portc_t
+{
+  userdev_devc_t *devc;
+  userdev_portc_t *peer;
+  int audio_dev;
+  int open_mode;
+  int port_type;
+#define PT_CLIENT	1
+#define PT_SERVER	2
+
+  /* State variables */
+  int input_triggered, output_triggered;
+};
+
+struct _userdev_devc_t
+{
+  oss_device_t *osdev;
+  int active;
+  oss_mutex_t mutex;
+
+  int open_count;	/* 0=not in use, 2=both client and server in use */
+
+  int create_flags;	/* Flags from ioctl(USERDEV_CREATE_INSTANCE) */
+
+  unsigned int poll_ticks; /* Number of clock tickes (OSS_HZ) between polls. */
+
+  unsigned int match_method;
+  unsigned int match_key;
+  int mixer_dev;
+
+  userdev_devc_t *next_instance;
+
+  int rate;
+  int channels;
+  unsigned int fmt, fmt_bytes;
+  timeout_id_t timeout_id;
+
+  userdev_portc_t client_portc;
+  userdev_portc_t server_portc;
+
+  /*
+   * Mixer related fields
+   */
+  int modify_counter;
+  int mixer_values[USERDEV_MAX_MIXERS];
+};
+
+extern oss_device_t *userdev_osdev;
+extern oss_mutex_t userdev_global_mutex;
+extern userdev_devc_t *userdev_active_device_list;
+extern userdev_devc_t *userdev_free_device_list;
+
+extern int userdev_create_device_pair(void);
+extern void userdev_delete_device_pair(userdev_devc_t *devc);
+extern int usrdev_find_free_device_pair(void);
+extern void userdev_reinit_instance(userdev_devc_t *devc);
+
+extern char *userdev_client_devnode;
+extern char *userdev_server_devnode;