#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 */ /* */ #define USB_SUBCLASS_AUDIO_CONTROL 0x01 #define USB_SUBCLASS_AUDIO_STREAMING 0x02 #define USB_SUBCLASS_MIDI_STREAMING 0x03 #define USB_SUBCLASS_VENDOR_SPEC 0xff #define HEADER 0x01 #define INPUT_TERMINAL 0x02 #define OUTPUT_TERMINAL 0x03 #define MIXER_UNIT 0x04 #define SELECTOR_UNIT 0x05 #define FEATURE_UNIT 0x06 #define PROCESSING_UNIT 0x07 #define EXTENSION_UNIT 0x08 #define AS_GENERAL 0x01 #define FORMAT_TYPE 0x02 #define FORMAT_SPECIFIC 0x03 #define EP_GENERAL 0x01 #define MS_GENERAL 0x01 #define MIDI_IN_JACK 0x02 #define MIDI_OUT_JACK 0x03 /* endpoint attributes */ #define EP_ATTR_MASK 0x0c #define EP_ATTR_ASYNC 0x04 #define EP_ATTR_ADAPTIVE 0x08 #define EP_ATTR_SYNC 0x0c /* cs endpoint attributes */ #define EP_CS_ATTR_SAMPLE_RATE 0x01 #define EP_CS_ATTR_PITCH_CONTROL 0x02 #define EP_CS_ATTR_FILL_MAX 0x80 /* Audio Class specific Request Codes */ #define SET_CUR 0x01 #define GET_CUR 0x81 #define SET_MIN 0x02 #define GET_MIN 0x82 #define SET_MAX 0x03 #define GET_MAX 0x83 #define SET_RES 0x04 #define GET_RES 0x84 #define SET_MEM 0x05 #define GET_MEM 0x85 #define GET_STAT 0xff /* Terminal Control Selectors */ #define COPY_PROTECT_CONTROL 0x01 /* Endpoint Control Selectors */ #define SAMPLING_FREQ_CONTROL 0x01 #define PITCH_CONTROL 0x02 /* Format Types */ #define USB_FORMAT_TYPE_I 0x01 #define USB_FORMAT_TYPE_II 0x02 #define USB_FORMAT_TYPE_III 0x03 /* type I */ #define USB_AUDIO_FORMAT_PCM 0x01 #define USB_AUDIO_FORMAT_PCM8 0x02 #define USB_AUDIO_FORMAT_IEEE_FLOAT 0x03 #define USB_AUDIO_FORMAT_ALAW 0x04 #define USB_AUDIO_FORMAT_MU_LAW 0x05 /* type II */ #define USB_AUDIO_FORMAT_MPEG 0x1001 #define USB_AUDIO_FORMAT_AC3 0x1002 /* type III */ #define USB_AUDIO_FORMAT_IEC1937_AC3 0x2001 #define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1 0x2002 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT 0x2003 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT 0x2004 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS 0x2005 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS 0x2006 /* 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; int num_interfaces; struct list_head pcm_list; /* list of pcm streams */ int pcm_devs; struct list_head midi_list; /* list of midi interfaces */ int next_midi_device; 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_RAW, QUIRK_MIDI_EMAGIC, QUIRK_MIDI_CME, QUIRK_AUDIO_STANDARD_INTERFACE, QUIRK_AUDIO_FIXED_ENDPOINT, QUIRK_AUDIO_EDIROL_UA700_UA25, QUIRK_AUDIO_EDIROL_UA1000, 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_UA700_UA25/UA1000, 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 */ /* */ #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); void snd_usb_mixer_disconnect(struct list_head *p); int snd_usb_create_midi_interface(struct snd_usb_audio *chip, struct usb_interface *iface, 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); /* * 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 */