#ifndef __SOUND_CONTROL_H #define __SOUND_CONTROL_H /* * Header file for control interface * Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/wait.h> #include <linux/nospec.h> #include <sound/asound.h> #define snd_kcontrol_chip(kcontrol) ((kcontrol)->private_data) struct snd_kcontrol; typedef int (snd_kcontrol_info_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_info * uinfo); typedef int (snd_kcontrol_get_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol); typedef int (snd_kcontrol_put_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol); typedef int (snd_kcontrol_tlv_rw_t)(struct snd_kcontrol *kcontrol, int op_flag, /* SNDRV_CTL_TLV_OP_XXX */ unsigned int size, unsigned int __user *tlv); enum { SNDRV_CTL_TLV_OP_READ = 0, SNDRV_CTL_TLV_OP_WRITE = 1, SNDRV_CTL_TLV_OP_CMD = -1, }; struct snd_kcontrol_new { snd_ctl_elem_iface_t iface; /* interface identifier */ unsigned int device; /* device/client number */ unsigned int subdevice; /* subdevice (substream) number */ const unsigned char *name; /* ASCII name of item */ unsigned int index; /* index of item */ unsigned int access; /* access rights */ unsigned int count; /* count of same elements */ snd_kcontrol_info_t *info; snd_kcontrol_get_t *get; snd_kcontrol_put_t *put; union { snd_kcontrol_tlv_rw_t *c; const unsigned int *p; } tlv; unsigned long private_value; }; struct snd_kcontrol_volatile { struct snd_ctl_file *owner; /* locked */ unsigned int access; /* access rights */ }; struct snd_kcontrol { struct list_head list; /* list of controls */ struct snd_ctl_elem_id id; unsigned int count; /* count of same elements */ snd_kcontrol_info_t *info; snd_kcontrol_get_t *get; snd_kcontrol_put_t *put; union { snd_kcontrol_tlv_rw_t *c; const unsigned int *p; } tlv; unsigned long private_value; void *private_data; void (*private_free)(struct snd_kcontrol *kcontrol); struct snd_kcontrol_volatile vd[0]; /* volatile data */ }; #define snd_kcontrol(n) list_entry(n, struct snd_kcontrol, list) struct snd_kctl_event { struct list_head list; /* list of events */ struct snd_ctl_elem_id id; unsigned int mask; }; #define snd_kctl_event(n) list_entry(n, struct snd_kctl_event, list) struct pid; enum { SND_CTL_SUBDEV_PCM, SND_CTL_SUBDEV_RAWMIDI, SND_CTL_SUBDEV_ITEMS, }; struct snd_ctl_file { struct list_head list; /* list of all control files */ struct snd_card *card; struct pid *pid; int preferred_subdevice[SND_CTL_SUBDEV_ITEMS]; wait_queue_head_t change_sleep; spinlock_t read_lock; struct fasync_struct *fasync; int subscribed; /* read interface is activated */ struct list_head events; /* waiting events for read */ }; #define snd_ctl_file(n) list_entry(n, struct snd_ctl_file, list) typedef int (*snd_kctl_ioctl_func_t) (struct snd_card * card, struct snd_ctl_file * control, unsigned int cmd, unsigned long arg); void snd_ctl_notify(struct snd_card * card, unsigned int mask, struct snd_ctl_elem_id * id); struct snd_kcontrol *snd_ctl_new1(const struct snd_kcontrol_new * kcontrolnew, void * private_data); void snd_ctl_free_one(struct snd_kcontrol * kcontrol); int snd_ctl_add(struct snd_card * card, struct snd_kcontrol * kcontrol); int snd_ctl_remove(struct snd_card * card, struct snd_kcontrol * kcontrol); int snd_ctl_replace(struct snd_card *card, struct snd_kcontrol *kcontrol, bool add_on_replace); int snd_ctl_remove_id(struct snd_card * card, struct snd_ctl_elem_id *id); int snd_ctl_rename_id(struct snd_card * card, struct snd_ctl_elem_id *src_id, struct snd_ctl_elem_id *dst_id); int snd_ctl_activate_id(struct snd_card *card, struct snd_ctl_elem_id *id, int active); struct snd_kcontrol *snd_ctl_find_numid(struct snd_card * card, unsigned int numid); struct snd_kcontrol *snd_ctl_find_id(struct snd_card * card, struct snd_ctl_elem_id *id); int snd_ctl_create(struct snd_card *card); int snd_ctl_register_ioctl(snd_kctl_ioctl_func_t fcn); int snd_ctl_unregister_ioctl(snd_kctl_ioctl_func_t fcn); #ifdef CONFIG_COMPAT int snd_ctl_register_ioctl_compat(snd_kctl_ioctl_func_t fcn); int snd_ctl_unregister_ioctl_compat(snd_kctl_ioctl_func_t fcn); #else #define snd_ctl_register_ioctl_compat(fcn) #define snd_ctl_unregister_ioctl_compat(fcn) #endif int snd_ctl_get_preferred_subdevice(struct snd_card *card, int type); static inline unsigned int snd_ctl_get_ioffnum(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id) { unsigned int ioff = id->numid - kctl->id.numid; return array_index_nospec(ioff, kctl->count); } static inline unsigned int snd_ctl_get_ioffidx(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id) { unsigned int ioff = id->index - kctl->id.index; return array_index_nospec(ioff, kctl->count); } static inline unsigned int snd_ctl_get_ioff(struct snd_kcontrol *kctl, struct snd_ctl_elem_id *id) { if (id->numid) { return snd_ctl_get_ioffnum(kctl, id); } else { return snd_ctl_get_ioffidx(kctl, id); } } static inline struct snd_ctl_elem_id *snd_ctl_build_ioff(struct snd_ctl_elem_id *dst_id, struct snd_kcontrol *src_kctl, unsigned int offset) { *dst_id = src_kctl->id; dst_id->index += offset; dst_id->numid += offset; return dst_id; } /* * Frequently used control callbacks/helpers */ int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo); int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo); int snd_ctl_enum_info(struct snd_ctl_elem_info *info, unsigned int channels, unsigned int items, const char *const names[]); /* * virtual master control */ struct snd_kcontrol *snd_ctl_make_virtual_master(char *name, const unsigned int *tlv); int _snd_ctl_add_slave(struct snd_kcontrol *master, struct snd_kcontrol *slave, unsigned int flags); /* optional flags for slave */ #define SND_CTL_SLAVE_NEED_UPDATE (1 << 0) /** * snd_ctl_add_slave - Add a virtual slave control * @master: vmaster element * @slave: slave element to add * * Add a virtual slave control to the given master element created via * snd_ctl_create_virtual_master() beforehand. * * All slaves must be the same type (returning the same information * via info callback). The function doesn't check it, so it's your * responsibility. * * Also, some additional limitations: * at most two channels, * logarithmic volume control (dB level) thus no linear volume, * master can only attenuate the volume without gain * * Return: Zero if successful or a negative error code. */ static inline int snd_ctl_add_slave(struct snd_kcontrol *master, struct snd_kcontrol *slave) { return _snd_ctl_add_slave(master, slave, 0); } /** * snd_ctl_add_slave_uncached - Add a virtual slave control * @master: vmaster element * @slave: slave element to add * * Add a virtual slave control to the given master. * Unlike snd_ctl_add_slave(), the element added via this function * is supposed to have volatile values, and get callback is called * at each time queried from the master. * * When the control peeks the hardware values directly and the value * can be changed by other means than the put callback of the element, * this function should be used to keep the value always up-to-date. * * Return: Zero if successful or a negative error code. */ static inline int snd_ctl_add_slave_uncached(struct snd_kcontrol *master, struct snd_kcontrol *slave) { return _snd_ctl_add_slave(master, slave, SND_CTL_SLAVE_NEED_UPDATE); } int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kctl, void (*hook)(void *private_data, int), void *private_data); void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only); #define snd_ctl_sync_vmaster_hook(kctl) snd_ctl_sync_vmaster(kctl, true) int snd_ctl_apply_vmaster_slaves(struct snd_kcontrol *kctl, int (*func)(struct snd_kcontrol *vslave, struct snd_kcontrol *slave, void *arg), void *arg); /* * Helper functions for jack-detection controls */ struct snd_kcontrol * snd_kctl_jack_new(const char *name, struct snd_card *card); void snd_kctl_jack_report(struct snd_card *card, struct snd_kcontrol *kctl, bool status); #endif /* __SOUND_CONTROL_H */
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ac97 | Folder | 0755 |
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asequencer.h | File | 3.58 KB | 0644 |
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asound.h | File | 1.25 KB | 0644 |
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asoundef.h | File | 16.7 KB | 0644 |
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compress_driver.h | File | 6.93 KB | 0644 |
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control.h | File | 8.84 KB | 0644 |
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designware_i2s.h | File | 2.25 KB | 0644 |
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dmaengine_pcm.h | File | 6.22 KB | 0644 |
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emu10k1.h | File | 89.25 KB | 0644 |
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emu10k1_synth.h | File | 1.35 KB | 0644 |
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gus.h | File | 20.21 KB | 0644 |
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hda_chmap.h | File | 2.6 KB | 0644 |
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hda_hwdep.h | File | 1.38 KB | 0644 |
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hda_i915.h | File | 1.64 KB | 0644 |
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hda_verbs.h | File | 16.81 KB | 0644 |
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hdaudio.h | File | 18.39 KB | 0644 |
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hdaudio_ext.h | File | 6.99 KB | 0644 |
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hdmi-codec.h | File | 2.42 KB | 0644 |
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hwdep.h | File | 2.56 KB | 0644 |
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i2c.h | File | 3.47 KB | 0644 |
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info.h | File | 7.41 KB | 0644 |
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initval.h | File | 3.08 KB | 0644 |
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jack.h | File | 3.75 KB | 0644 |
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l3.h | File | 524 B | 0644 |
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max9768.h | File | 729 B | 0644 |
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max98088.h | File | 1.26 KB | 0644 |
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memalloc.h | File | 4.41 KB | 0644 |
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minors.h | File | 4.33 KB | 0644 |
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mixer_oss.h | File | 2.41 KB | 0644 |
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mpu401.h | File | 4.49 KB | 0644 |
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omap-hdmi-audio.h | File | 1.34 KB | 0644 |
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omap-pcm.h | File | 864 B | 0644 |
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opl3.h | File | 12.31 KB | 0644 |
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opl4.h | File | 1.1 KB | 0644 |
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pcm-indirect.h | File | 5.7 KB | 0644 |
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pcm.h | File | 47.51 KB | 0644 |
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pcm_drm_eld.h | File | 183 B | 0644 |
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pcm_iec958.h | File | 332 B | 0644 |
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pcm_oss.h | File | 2.69 KB | 0644 |
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pcm_params.h | File | 9.03 KB | 0644 |
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pt2258.h | File | 1.18 KB | 0644 |
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pxa2xx-lib.h | File | 1.48 KB | 0644 |
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rawmidi.h | File | 6.17 KB | 0644 |
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s3c24xx_uda134x.h | File | 229 B | 0644 |
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sb.h | File | 10.98 KB | 0644 |
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sb16_csp.h | File | 2.71 KB | 0644 |
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seq_device.h | File | 2.79 KB | 0644 |
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seq_kernel.h | File | 3.96 KB | 0644 |
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seq_midi_emul.h | File | 7.26 KB | 0644 |
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seq_midi_event.h | File | 2.17 KB | 0644 |
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seq_oss.h | File | 2.86 KB | 0644 |
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seq_oss_legacy.h | File | 1 KB | 0644 |
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seq_virmidi.h | File | 2.73 KB | 0644 |
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sh_dac_audio.h | File | 587 B | 0644 |
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sh_fsi.h | File | 847 B | 0644 |
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simple_card.h | File | 683 B | 0644 |
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simple_card_utils.h | File | 3.96 KB | 0644 |
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snd_wavefront.h | File | 5.57 KB | 0644 |
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soc-acpi-intel-match.h | File | 1.1 KB | 0644 |
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soc-acpi.h | File | 3.6 KB | 0644 |
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soc-dai.h | File | 11.13 KB | 0644 |
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soc-dapm.h | File | 30.87 KB | 0644 |
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soc-dpcm.h | File | 4.73 KB | 0644 |
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soc-topology.h | File | 5.71 KB | 0644 |
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soc.h | File | 63.47 KB | 0644 |
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soundfont.h | File | 4.48 KB | 0644 |
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spear_dma.h | File | 1003 B | 0644 |
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spear_spdif.h | File | 1010 B | 0644 |
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sta32x.h | File | 1.2 KB | 0644 |
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sta350.h | File | 1.65 KB | 0644 |
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tas2552-plat.h | File | 678 B | 0644 |
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tas5086.h | File | 210 B | 0644 |
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tea6330t.h | File | 1.14 KB | 0644 |
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timer.h | File | 5.56 KB | 0644 |
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tlv.h | File | 2.27 KB | 0644 |
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tlv320aic32x4.h | File | 1.43 KB | 0644 |
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tlv320aic3x.h | File | 1.88 KB | 0644 |
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tlv320dac33-plat.h | File | 720 B | 0644 |
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tpa6130a2-plat.h | File | 900 B | 0644 |
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uda134x.h | File | 597 B | 0644 |
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uda1380.h | File | 481 B | 0644 |
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util_mem.h | File | 2.26 KB | 0644 |
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vx_core.h | File | 15.34 KB | 0644 |
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wavefront.h | File | 18.76 KB | 0644 |
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wm0010.h | File | 679 B | 0644 |
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wm1250-ev1.h | File | 656 B | 0644 |
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wm2000.h | File | 625 B | 0644 |
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wm2200.h | File | 1.46 KB | 0644 |
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wm5100.h | File | 1.25 KB | 0644 |
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wm8903.h | File | 15.16 KB | 0644 |
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wm8904.h | File | 7.43 KB | 0644 |
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wm8955.h | File | 662 B | 0644 |
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wm8960.h | File | 603 B | 0644 |
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wm8962.h | File | 1.8 KB | 0644 |
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wm8993.h | File | 1.19 KB | 0644 |
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wm8996.h | File | 1.4 KB | 0644 |
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wm9081.h | File | 661 B | 0644 |
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wm9090.h | File | 780 B | 0644 |
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wss.h | File | 8.44 KB | 0644 |
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