#ifndef __USBAUDIO_H #define __USBAUDIO_H /* * (Tentative) USB Audio Driver for ALSA * * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> * * * 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 */ /* maximum number of endpoints per interface */ #define MIDI_MAX_ENDPOINTS 2 /* handling of USB vendor/product ID pairs as 32-bit numbers */ #define USB_ID(vendor, product) (((vendor) << 16) | (product)) #define USB_ID_VENDOR(id) ((id) >> 16) #define USB_ID_PRODUCT(id) ((u16)(id)) /* */ struct snd_usb_audio { int index; struct usb_device *dev; struct snd_card *card; u32 usb_id; int shutdown; unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */ int num_interfaces; int num_suspended_intf; /* for audio class v2 */ int clock_id; struct list_head pcm_list; /* list of pcm streams */ int pcm_devs; struct list_head midi_list; /* list of midi interfaces */ struct list_head mixer_list; /* list of mixer interfaces */ }; /* * Information about devices with broken descriptors */ /* special values for .ifnum */ #define QUIRK_NO_INTERFACE -2 #define QUIRK_ANY_INTERFACE -1 enum quirk_type { QUIRK_IGNORE_INTERFACE, QUIRK_COMPOSITE, QUIRK_MIDI_STANDARD_INTERFACE, QUIRK_MIDI_FIXED_ENDPOINT, QUIRK_MIDI_YAMAHA, QUIRK_MIDI_MIDIMAN, QUIRK_MIDI_NOVATION, QUIRK_MIDI_FASTLANE, QUIRK_MIDI_EMAGIC, QUIRK_MIDI_CME, QUIRK_MIDI_US122L, QUIRK_AUDIO_STANDARD_INTERFACE, QUIRK_AUDIO_FIXED_ENDPOINT, QUIRK_AUDIO_EDIROL_UAXX, QUIRK_AUDIO_ALIGN_TRANSFER, QUIRK_TYPE_COUNT }; struct snd_usb_audio_quirk { const char *vendor_name; const char *product_name; int16_t ifnum; uint16_t type; const void *data; }; /* data for QUIRK_MIDI_FIXED_ENDPOINT */ struct snd_usb_midi_endpoint_info { int8_t out_ep; /* ep number, 0 autodetect */ uint8_t out_interval; /* interval for interrupt endpoints */ int8_t in_ep; uint8_t in_interval; uint16_t out_cables; /* bitmask */ uint16_t in_cables; /* bitmask */ }; /* for QUIRK_MIDI_YAMAHA, data is NULL */ /* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info * structure (out_cables and in_cables only) */ /* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk * structures, terminated with .ifnum = -1 */ /* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */ /* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */ /* for QUIRK_AUDIO_EDIROL_UAXX, data is NULL */ /* for QUIRK_IGNORE_INTERFACE, data is NULL */ /* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */ /* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info * structure (out_cables and in_cables only) */ /* for QUIRK_MIDI_CME, data is NULL */ /* */ /*E-mu USB samplerate control quirk*/ enum { EMU_QUIRK_SR_44100HZ = 0, EMU_QUIRK_SR_48000HZ, EMU_QUIRK_SR_88200HZ, EMU_QUIRK_SR_96000HZ, EMU_QUIRK_SR_176400HZ, EMU_QUIRK_SR_192000HZ }; #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size, int timeout); int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, int ignore_error); void snd_usb_mixer_disconnect(struct list_head *p); int snd_usbmidi_create(struct snd_card *card, struct usb_interface *iface, struct list_head *midi_list, const struct snd_usb_audio_quirk *quirk); void snd_usbmidi_input_stop(struct list_head* p); void snd_usbmidi_input_start(struct list_head* p); void snd_usbmidi_disconnect(struct list_head *p); void snd_emuusb_set_samplerate(struct snd_usb_audio *chip, unsigned char samplerate_id); /* * retrieve usb_interface descriptor from the host interface * (conditional for compatibility with the older API) */ #ifndef get_iface_desc #define get_iface_desc(iface) (&(iface)->desc) #define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc) #define get_ep_desc(ep) (&(ep)->desc) #define get_cfg_desc(cfg) (&(cfg)->desc) #endif #ifndef snd_usb_get_speed #define snd_usb_get_speed(dev) ((dev)->speed) #endif #endif /* __USBAUDIO_H */