sound/usb/usbaudio.h

   1 #ifndef __USBAUDIO_H
   2 #define __USBAUDIO_H
   3 /*
   4  *   (Tentative) USB Audio Driver for ALSA
   5  *
   6  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
   7  *
   8  *
   9  *   This program is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License as published by
  11  *   the Free Software Foundation; either version 2 of the License, or
  12  *   (at your option) any later version.
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program; if not, write to the Free Software
  21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  */
  23
  24
  25 /*
  26  */
  27
  28 #define USB_SUBCLASS_AUDIO_CONTROL      0x01
  29 #define USB_SUBCLASS_AUDIO_STREAMING    0x02
  30 #define USB_SUBCLASS_MIDI_STREAMING     0x03
  31 #define USB_SUBCLASS_VENDOR_SPEC        0xff
  32
  33 #define CS_AUDIO_UNDEFINED              0x20
  34 #define CS_AUDIO_DEVICE                 0x21
  35 #define CS_AUDIO_CONFIGURATION          0x22
  36 #define CS_AUDIO_STRING                 0x23
  37 #define CS_AUDIO_INTERFACE              0x24
  38 #define CS_AUDIO_ENDPOINT               0x25
  39
  40 #define HEADER                          0x01
  41 #define INPUT_TERMINAL                  0x02
  42 #define OUTPUT_TERMINAL                 0x03
  43 #define MIXER_UNIT                      0x04
  44 #define SELECTOR_UNIT                   0x05
  45 #define FEATURE_UNIT                    0x06
  46 #define PROCESSING_UNIT                 0x07
  47 #define EXTENSION_UNIT                  0x08
  48
  49 #define AS_GENERAL                      0x01
  50 #define FORMAT_TYPE                     0x02
  51 #define FORMAT_SPECIFIC                 0x03
  52
  53 #define EP_GENERAL                      0x01
  54
  55 #define MS_GENERAL                      0x01
  56 #define MIDI_IN_JACK                    0x02
  57 #define MIDI_OUT_JACK                   0x03
  58
  59 /* endpoint attributes */
  60 #define EP_ATTR_MASK                    0x0c
  61 #define EP_ATTR_ASYNC                   0x04
  62 #define EP_ATTR_ADAPTIVE                0x08
  63 #define EP_ATTR_SYNC                    0x0c
  64
  65 /* cs endpoint attributes */
  66 #define EP_CS_ATTR_SAMPLE_RATE          0x01
  67 #define EP_CS_ATTR_PITCH_CONTROL        0x02
  68 #define EP_CS_ATTR_FILL_MAX             0x80
  69
  70 /* Audio Class specific Request Codes */
  71
  72 #define SET_CUR    0x01
  73 #define GET_CUR    0x81
  74 #define SET_MIN    0x02
  75 #define GET_MIN    0x82
  76 #define SET_MAX    0x03
  77 #define GET_MAX    0x83
  78 #define SET_RES    0x04
  79 #define GET_RES    0x84
  80 #define SET_MEM    0x05
  81 #define GET_MEM    0x85
  82 #define GET_STAT   0xff
  83
  84 /* Terminal Control Selectors */
  85
  86 #define COPY_PROTECT_CONTROL       0x01
  87
  88 /* Endpoint Control Selectors */
  89
  90 #define SAMPLING_FREQ_CONTROL      0x01
  91 #define PITCH_CONTROL              0x02
  92
  93 /* Format Types */
  94 #define USB_FORMAT_TYPE_I       0x01
  95 #define USB_FORMAT_TYPE_II      0x02
  96 #define USB_FORMAT_TYPE_III     0x03
  97
  98 /* type I */
  99 #define USB_AUDIO_FORMAT_PCM    0x01
 100 #define USB_AUDIO_FORMAT_PCM8   0x02
 101 #define USB_AUDIO_FORMAT_IEEE_FLOAT     0x03
 102 #define USB_AUDIO_FORMAT_ALAW   0x04
 103 #define USB_AUDIO_FORMAT_MU_LAW 0x05
 104
 105 /* type II */
 106 #define USB_AUDIO_FORMAT_MPEG   0x1001
 107 #define USB_AUDIO_FORMAT_AC3    0x1002
 108
 109 /* type III */
 110 #define USB_AUDIO_FORMAT_IEC1937_AC3    0x2001
 111 #define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1   0x2002
 112 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT    0x2003
 113 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT      0x2004
 114 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS        0x2005
 115 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS       0x2006
 116
 117
 118 /* maximum number of endpoints per interface */
 119 #define MIDI_MAX_ENDPOINTS 2
 120
 121 /* handling of USB vendor/product ID pairs as 32-bit numbers */
 122 #define USB_ID(vendor, product) (((vendor) << 16) | (product))
 123 #define USB_ID_VENDOR(id) ((id) >> 16)
 124 #define USB_ID_PRODUCT(id) ((u16)(id))
 125
 126 /*
 127  */
 128
 129 typedef struct snd_usb_audio snd_usb_audio_t;
 130
 131 struct snd_usb_audio {
 132         int index;
 133         struct usb_device *dev;
 134         snd_card_t *card;
 135         u32 usb_id;
 136         int shutdown;
 137         int num_interfaces;
 138
 139         struct list_head pcm_list;      /* list of pcm streams */
 140         int pcm_devs;
 141
 142         struct list_head midi_list;     /* list of midi interfaces */
 143         int next_midi_device;
 144
 145         struct list_head mixer_list;    /* list of mixer interfaces */
 146 };
 147
 148 /*
 149  * Information about devices with broken descriptors
 150  */
 151
 152 /* special values for .ifnum */
 153 #define QUIRK_NO_INTERFACE              -2
 154 #define QUIRK_ANY_INTERFACE             -1
 155
 156 enum quirk_type {
 157         QUIRK_IGNORE_INTERFACE,
 158         QUIRK_COMPOSITE,
 159         QUIRK_MIDI_STANDARD_INTERFACE,
 160         QUIRK_MIDI_FIXED_ENDPOINT,
 161         QUIRK_MIDI_YAMAHA,
 162         QUIRK_MIDI_MIDIMAN,
 163         QUIRK_MIDI_NOVATION,
 164         QUIRK_MIDI_RAW,
 165         QUIRK_MIDI_EMAGIC,
 166         QUIRK_MIDI_MIDITECH,
 167         QUIRK_AUDIO_STANDARD_INTERFACE,
 168         QUIRK_AUDIO_FIXED_ENDPOINT,
 169         QUIRK_AUDIO_EDIROL_UA700_UA25,
 170         QUIRK_AUDIO_EDIROL_UA1000,
 171
 172         QUIRK_TYPE_COUNT
 173 };
 174
 175 typedef struct snd_usb_audio_quirk snd_usb_audio_quirk_t;
 176 typedef struct snd_usb_midi_endpoint_info snd_usb_midi_endpoint_info_t;
 177
 178 struct snd_usb_audio_quirk {
 179         const char *vendor_name;
 180         const char *product_name;
 181         int16_t ifnum;
 182         uint16_t type;
 183         const void *data;
 184 };
 185
 186 /* data for QUIRK_MIDI_FIXED_ENDPOINT */
 187 struct snd_usb_midi_endpoint_info {
 188         int8_t   out_ep;        /* ep number, 0 autodetect */
 189         uint8_t  out_interval;  /* interval for interrupt endpoints */
 190         int8_t   in_ep;
 191         uint8_t  in_interval;
 192         uint16_t out_cables;    /* bitmask */
 193         uint16_t in_cables;     /* bitmask */
 194 };
 195
 196 /* for QUIRK_MIDI_YAMAHA, data is NULL */
 197
 198 /* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
 199  * structure (out_cables and in_cables only) */
 200
 201 /* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
 202  * structures, terminated with .ifnum = -1 */
 203
 204 /* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */
 205
 206 /* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */
 207
 208 /* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */
 209
 210 /* for QUIRK_IGNORE_INTERFACE, data is NULL */
 211
 212 /* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */
 213
 214 /* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
 215  * structure (out_cables and in_cables only) */
 216
 217 /* for QUIRK_MIDI_MIDITECH, data is NULL */
 218
 219 /*
 220  */
 221
 222 #define combine_word(s)    ((*s) | ((unsigned int)(s)[1] << 8))
 223 #define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
 224 #define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
 225
 226 unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
 227
 228 void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
 229 void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
 230
 231 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);
 232
 233 int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif);
 234 void snd_usb_mixer_disconnect(struct list_head *p);
 235
 236 int snd_usb_create_midi_interface(snd_usb_audio_t *chip, struct usb_interface *iface, const snd_usb_audio_quirk_t *quirk);
 237 void snd_usbmidi_input_stop(struct list_head* p);
 238 void snd_usbmidi_input_start(struct list_head* p);
 239 void snd_usbmidi_disconnect(struct list_head *p);
 240
 241 /*
 242  * retrieve usb_interface descriptor from the host interface
 243  * (conditional for compatibility with the older API)
 244  */
 245 #ifndef get_iface_desc
 246 #define get_iface_desc(iface)   (&(iface)->desc)
 247 #define get_endpoint(alt,ep)    (&(alt)->endpoint[ep].desc)
 248 #define get_ep_desc(ep)         (&(ep)->desc)
 249 #define get_cfg_desc(cfg)       (&(cfg)->desc)
 250 #endif
 251
 252 #ifndef snd_usb_get_speed
 253 #define snd_usb_get_speed(dev) ((dev)->speed)
 254 #endif
 255
 256 #endif /* __USBAUDIO_H */