Imported Upstream version 4.2-build2006upstream/4.2-build2006upstream

1 files changed, 138 insertions, 0 deletions

diff --git a/kernel/framework/include/mixer_core.h b/kernel/framework/include/mixer_core.h
new file mode 100644
index 0000000..ac4009f
--- /dev/null
+++ b/kernel/framework/include/mixer_core.h
@@ -0,0 +1,138 @@
+#ifndef MIXER_CORE_H
+#define MIXER_CORE_H
+
+/*
+ * Purpose: Mixer specific internal structure and function definitions.
+ *
+ * IMPORTANT NOTICE!
+ *
+ * This file contains internal structures used by Open Sound Systems.
+ * They will change without any notice between OSS versions. Care must be taken
+ * to make sure any software using this header gets properly re-compiled before
+ * use.
+ *
+ * 4Front Technologies (or anybody else) takes no responsibility of damages
+ * caused by use of this file.
+ */
+
+/*
+ *
+ * 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.
+ *
+ */
+
+typedef struct
+{
+  oss_mixext ext;
+  mixer_ext_fn handler;
+  oss_mixer_enuminfo *enum_info;
+  char *description; /* For "tooltips" */
+}
+oss_mixext_desc;
+
+struct _mixer_operations_t
+{
+  oss_devname_t name;
+  oss_id_t id;
+
+  mixer_driver_t *d;
+
+  void *devc;
+  void *hw_devc;
+  int modify_counter;
+
+  /* Mixer extension interface */
+  int nr_extra_ext;
+  mixer_create_controls_t create_controls;
+  int nr_ext;
+  int names_checked;
+  int max_ext;
+  int timestamp;
+  oss_mixext_desc *extensions;
+  int ignore_mask;		/* Controls ignored by mixer ext API */
+
+  /* Misc info */
+  int card_number;
+  int port_number;
+  int enabled;
+  int unloaded;
+  int magic;
+  int caps;
+  int flags;
+  oss_handle_t handle;
+  oss_device_t *osdev;
+  oss_device_t *master_osdev;	/* osdev struct of the master device (for virtual drivers) */
+  void *os_id;			/* The device ID (dip) given by the system. */
+
+/*
+ * Priority is used for selecting the preferred mixer (usually the motherboard
+ * device). By default the priority is 0. Value of -2 means that this mixer
+ * should not be used as the default mixer. -1 means that this mixer can
+ * be used as the default mixer only if no better mixer exists. priority=10
+ * is used for known motherboard devices. 2 can be used by non-motherboard
+ * mixers that support the usual main volume setting
+ * (SNDCTL_MIXER_READ/WRITE_MAINVOL). 3-9 are reserved. Values higher than 10
+ * can only be set manually by the user.
+ */
+  int priority;
+  oss_devnode_t devnode;
+  int real_dev;			/* Legacy device mapping */
+
+  /* 
+   * Virtual mixer extension support (optional)
+   */
+  void *vmix_devc;
+  mixer_create_controls_t create_vmix_controls;
+};
+
+typedef struct _mixer_operations_t mixdev_t, *mixdev_p;
+
+extern mixer_operations_t **mixer_devs;
+extern void *mixer_devs_p;
+extern int num_mixers;
+extern void touch_mixer (int dev);
+extern int oss_mixer_ext (int orig_dev, int dev_class, unsigned int cmd,
+			  ioctl_arg arg);
+extern int mixer_ext_set_enum (oss_mixer_enuminfo * ent);
+
+extern char mix_cvt[];
+
+int oss_install_mixer (int vers,
+		       oss_device_t * osdev,
+		       oss_device_t * master_osdev,
+		       const char *name,
+		       mixer_driver_t * driver, int driver_size, void *devc);
+
+extern int oss_legacy_mixer_ioctl (int mixdev, int audiodev, unsigned int cmd,
+				   ioctl_arg arg);
+extern int mixer_ext_create_group (int dev, int parent, const char *id);
+extern int mixer_ext_create_group_flags (int dev, int parent, const char *id,
+					 unsigned int flags);
+extern int mixer_ext_create_control (int dev, int parent, int ctrl,
+				     mixer_ext_fn func, int type,
+				     const char *id, int maxvalue, int flags);
+extern int mixer_ext_rw (int dev, int ctrl, unsigned int cmd, int value);
+extern int mixer_ext_recrw (int dev, int ctrl, unsigned int cmd, int value);
+extern int mixer_ext_set_init_fn (int dev, mixer_create_controls_t func,
+				  int nextra);
+extern int mixer_ext_rebuild_all (int dev, mixer_create_controls_t func, int nextra);
+/*
+ * mixer_ext_set_vmix_init_fn() is reserved for the vmix driver to create
+ * additional virtual mixing related mixer controls.
+ */
+extern int mixer_ext_set_vmix_init_fn (int dev, mixer_create_controls_t func,
+				       int nextra, void *devc);
+oss_mixext *mixer_find_ext (int dev, int enumber);
+extern int mixer_ext_truncate (int dev, int index);
+extern int mixer_ext_set_strings (int dev, int ctl, const char *s,
+				  int version);
+extern int mixer_ext_set_description (int dev, int ctrl, const char *desc);
+extern int oss_mixer_ioctl (int dev, struct fileinfo *bogus, unsigned int cmd,
+			    ioctl_arg arg);
+#endif