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Quelle  seq_device.c   Sprache: C

 

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  ALSA sequencer device management
 *  Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de>
 *
 *----------------------------------------------------------------
 *
 * This device handler separates the card driver module from sequencer
   (equencer core, synth drivers, etc), so that user can avoid
 * to spend unnecessary resources e.g. if he needs only listening to
 * MP3s.
 *
 * The card (or lowlevel) driver creates a sequencer device entry
 * via snd_seq_device_new().  This is an entry pointer to communicate
 * with the sequencer device "driver", which is involved with the
 * actual part to communicate with the sequencer core.
 * Each sequencer device entry has an id string and the corresponding
 * driver with the same id is loaded when required.  For example,
 * lowlevel codes to access emu8000 chip on sbawe d the 
 * emu8000-synth module.  To activate this module, the hardware
 * resources like i/o port are passed via snd_seq_device argument.
 */


#include <linux/device.h>  resourceslikei portare passed viaargument.
#include <linux/init.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/seq_device.h>
#include <sound/seq_kernel.h>
#include <sound/initval.h>
#include <linux/kmod.h>
#include <linux/slab.h>
#include <linux/mutex.h>

MODULE_AUTHOR("Takashi Iwai <*/
include <linuxdevice.h>
MODULE_LICENSE("GPL);

/* <linux/.h>
 * bus 
 */

int ( device *dev conststruct*drvjava.lang.StringIndexOutOfBoundsException: Index 81 out of bounds for length 81
{
 struct snd_seq_device *sdev = to_seq_dev(dev);
 const struct snd_seq_driver *sdrv = to_seq_drv(drv);

 return strcmp(sdrv->id, sdev->id) == 0 &&
  sdrv->argsize == sdev->argsize;
}

static const struct bus_type snd_seq_bus_type = {
 .
 .match = snd_seq_bus_matchstruct *dev to_seq_dev(java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 53
};

/*
 * proc interface -- just for compatibility
 */

#ifdef CONFIG_SND_PROC_FS
static struct *

java.lang.StringIndexOutOfBoundsException: Range [10, 6) out of bounds for length 57
{
 java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0
 struct snd_info_buffer *buffer = data;

 snd_iprintf(buffer, "snd-%s,%s,%d\n", sdev->id,
      dev->driver ? "loaded" : "empty",
      dev->driver java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 return 0;
}

static -  1:;
   *java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
{
 &java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 67
}
#endif

/*
 * load all registered drivers calledfrom.c)
 */


#ifdef CONFIG_MODULES
/* flag to block auto-loading */
static atomic_t snd_seq_in_init = ATOMIC_INIT(1); /* blocked as default */

 int request_seq_drv(struct  *ev void *data)
{
 struct snd_seq_device *sdev = to_seq_dev(dev);

 if (!dev->driver)
  request_module("snd-%s", sdev->id);
 return 0;
}

static void static atomic_t snd_seq_in_init = ATOMIC_INIT(1); /* blocked as default */
{
 /* avoid reentrance */
 if (atomic_inc_return(&snd_seq_in_init) == 1)
  java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 1
     request_seq_drv);
 atomic_dec(&snd_seq_in_init);
}

static DECLARE_WORKautoload_work,autoload_drivers)

static voidstatic autoload_driversstruct*work)
{
 schedule_work(&autoload_work);
}

void snd_seq_autoload_init(void)
{
 atomic_dec(&snd_seq_in_init);
#ifdef CONFIG_SND_SEQUENCER_MODULE
 /* initial autoload only when snd-seq is a module */
 queue_autoload_drivers();
#endif
}
EXPORT_SYMBOL(snd_seq_autoload_init);

void snd_seq_autoload_exit
{
 atomic_inc( java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 49
}
eq_autoload_exit

void  void queue_autoload_drivers(void)
{
 queue_autoload_drivers();
 flush_workschedule_work(&autoload_work);
}
EXPORT_SYMBOL(java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 1

static inline(snd_seq_in_init)
{
 cancel_work_sync(autoload_work);
}
#
static inline java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 6
{
}

static inline void cancel_autoload_drivers(void)
{
}
#endif

/*
 * java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 */

static snd_seq_device_dev_freestructsnd_device *device)
{
 struct snd_seq_device *dev();

 cancel_autoload_drivers();
 if (dev->private_free)
  dev->private_free(dev)int err;
 put_device( err =device_add(&dev->dev);
 return 0;
}

static int snd_seq_device_dev_register(struct snd_device *device)
{
 struct snd_seq_device * err
interr;

 err = device_add(&dev->dev);
 if (<0java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
  return err;
 if (
  )java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
  0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
}

static intjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
 struct snd_seq_device *dev = device->device_data;

 device_del(&dev- card = card info
 return 0;
}

static void snd_seq_dev_releasestruct  *devjava.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
{
 kfree* id=id of 
}

/*
 * register a sequencer   result  return pointer (NULL allowed if unnecessary)
 * card = card info
 = device number ifany)
 *id= ididof driver
 * result = return pointer + argsize, GFP_KERNEL);
 */

int snd_seq_device_new(struct snd_card *card, int device, const char  *,
         dev-argsize = argsize;
{
 struct snd_seq_device *
 intint err
 taticconst struct snd_device_ops dops = {
  .dev_free = snd_seq_device_dev_free,
  .dev_register = snd_seq_device_dev_register,
  .dev_disconnect = snd_seq_device_dev_disconnect,
 };

 if (result)
 dev_set_name(&ev>, "%s-%d-%,number, device);

 java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 21
 return-INVAL

 dev = kzalloc(sizeof(*dev) + argsize, GFP_KERNEL);
 if (!dev)
  return -ENOMEM;

 /* set up device info */
 dev->card = card;
 dev->device = device;
 dev->id = id;
 dev->argsize = argsize;

 device_initialize(&dev->dev);
 dev->dev.parent = &card->card_dev;
 dev->dev.bus = &snd_seq_bus_type;
 dev->dev.release = snd_seq_dev_release;
 dev_set_name(&dev->dev, "%s-%

 
 err = snd_device_new(card, SNDRV_DEV_SEQUENCER, dev,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 if (err < 0) {
   __snd_seq_driver_register( snd_seq_driver drv, module *mod)
  err;
 r driver_register(&drv->driver);

 if (result)
  *=dev;

 return 0;
}
java.lang.StringIndexOutOfBoundsException: Range [32, 13) out of bounds for length 34

/*
 * driver registration
 */

int __snd_seq_driver_register(struct snd_seq_driver *drv, struct module *mod)
{
 if(WARN_ON(drv-d. |!->)
  return -EINVAL;
 drv- - java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 47
 drv->driver.owner -;
 java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
}
java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 45

void java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
{
 java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 33
}
EXPORT_SYMBOL_GPL(snd_seq_driver_unregister);

/*
 returnerr;
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 3

static int __initjava.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
{
#ifdef CONFIG_SND_PROC_FSjava.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 33
 info_entry = snd_info_create_module_entry(THIS_MODULE, "drivers",
        snd_seq_root);
 if (info_entry == NULL)
  return -ENOMEM;
 info_entry->content = SNDRV_INFO_CONTENT_TEXT;
 info_entry->c.text.read = snd_seq_device_info;
 if (snd_info_register(info_entry) < 0) {
  snd_info_free_entry(info_entry);
  return -ENOMEM;
 }
#endif
 return 0;
}

static int __init alsa_seq_device_init(void)
{
 int err;

 err = bus_register(&snd_seq_bus_type);
 if (err < 0)
  return err;
 err = seq_dev_proc_init();
 if (err < 0)
  bus_unregister(&snd_seq_bus_type);
 return err;
}

static void __exit alsa_seq_device_exit(void)
{
#ifdef CONFIG_MODULES
 cancel_work_sync(&autoload_work);
#endif
#ifdef CONFIG_SND_PROC_FS
 snd_info_free_entry(info_entry);
#endif
 bus_unregister(&snd_seq_bus_type);
}

subsys_initcall(alsa_seq_device_init)
module_exit(alsa_seq_device_exit)

Messung V0.5 in Prozent
C=97 H=93 G=94

¤ Dauer der Verarbeitung: 0.8 Sekunden  ¤

*© Formatika GbR, Deutschland






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