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/*
* Purpose: Definitions for the USB audio driver files
*/
/*
*
* This file is part of Open Sound System.
*
* Copyright (C) 4Front Technologies 1996-2008.
*
* This this source file is released under GPL v2 license (no other versions).
* See the COPYING file included in the main directory of this source
* distribution for the license terms and conditions.
*
*/
#ifndef __OSUSB_H_
#define __OSUSB_H_
#include "udi.h"
#include "midi_core.h"
#define CS_DEVICE 0x21
#define CS_CONFIG 0x22
#define CS_STRING 0x23
#define CS_INTERFACE 0x24
#define CS_ENDPOINT 0x25
#define AC_HEADER 0x01
#define AC_INPUT_TERMINAL 0x02
#define AC_OUTPUT_TERMINAL 0x03
#define AC_MIXER_UNIT 0x04
#define AC_SELECTOR_UNIT 0x05
#define AC_FEATURE_UNIT 0x06
#define AC_PROCESSING_UNIT 0x07
#define AC_EXTENSION_UNIT 0x08
#define AS_GENERAL 0x01
#define AS_FORMAT_TYPE 0x02
#define AS_FORMAT_SPECIFIC 0x03
#define SET_CUR 0x01
#define SET_MEM 0x05
#define GET_CUR 0x81
#define GET_MIN 0x82
#define GET_MAX 0x83
#define GET_RES 0x84
#define GET_MEM 0x85
#define GET_STAT 0xff
#define USB_RECIP_MASK 0x1f
#define USB_RECIP_DEVICE 0x00
#define USB_RECIP_INTERFACE 0x01
#define USB_RECIP_ENDPOINT 0x02
#define USB_RECIP_OTHER 0x03
#define USB_VENDOR_REQUEST 0x40
#define USB_TYPE_CLASS 0x20
/*
* Unit types
*
* Note that TY_OUTPUT is actually PCM input and TY_INPUT is actually
* PCM output. Unit types are defined as seen as the USB control interface.
* Input terminals listen to the output streaming interfases and output
* terminals feed the input streaming interfaces. Confusing it is.
*/
#define TY_INPUT 0
#define TY_OUTPUT 1
#define TY_MIXER 2
#define TY_SELECT 3
#define TY_FEAT 4
#define TY_PROC 5
#define TY_EXT 6
// Remember to inclease size of devc->unit_counters[] if adding more unit types
#define USBCLASS_AUDIO 1
#define USBCLASS_HID 3
#define MAX_IFACE 10
typedef struct
{
int num;
int typ; // TY_*
int subtyp;
char name[16];
unsigned char *desc;
int desclen;
int mixnum;
int target;
int source;
int ctl_avail;
int control_count;
int channels;
int chmask;
} usb_audio_unit_t;
#define MAX_UNIT 40
#define MAX_CONTROLS 100
#define MAX_PORTC 8 /* Max audio streaming interfaces per device */
#define MAX_MIDIC 16 /* Max MIDI streaming interfaces per device */
typedef struct
{
usb_audio_unit_t *unit;
int index;
int flags;
int min_ch, max_ch;
int global;
int chmask;
int value;
int min, max, scale;
int exttype;
} usb_control_t;
typedef struct ossusb_devc ossusb_devc;
typedef struct
{
ossusb_devc *devc;
int disabled;
int if_number;
void *endpoint_desc, *orig_endpoint_desc;
udi_endpoint_handle_t *endpoint_handle;
int audio_dev;
int open_mode;
int permitted_modes;
int prepared_modes;
int stopping;
int speed;
int bytes_per_sample;
int terminal_link;
udi_usb_devc *usbdev;
int num_settings;
int act_setting;
#define NR_DATAPIPES 2
udi_usb_request_t *datapipe[NR_DATAPIPES];
int curr_datapipe;
int fragment_size; /* Bytes per (1ms) USB tick */
int overflow_samples, overflow_size;
int convert_3byte;
int pipeline_delay;
unsigned char *tmp_buf[2];
int use_tmpbuf;
oss_dma_handle_t tmpbuf_dma_handle[2];
} ossusb_portc;
typedef struct
{
struct ossusb_devc *devc;
oss_device_t *osdev;
udi_usb_devc *usbdev;
void *in_endpoint_desc, *out_endpoint_desc;
udi_endpoint_handle_t *in_endpoint_handle, *out_endpoint_handle;
int portnum;
int midi_dev;
int open_mode;
// int output_endpoint;
oss_midi_inputbyte_t midi_input_intr;
oss_midi_outputintr_t midi_output_intr;
} ossusb_midic;
typedef void *(*special_driver_t) (ossusb_devc * devc);
typedef void (*special_unload_t) (void *devc);
struct ossusb_devc
{
special_unload_t unload_func;
oss_device_t *osdev;
oss_device_t *main_osdev;
oss_mutex_t mutex;
int num_interfaces;
udi_usb_devc *usbdev[MAX_IFACE], *last_usbdev;
int inum[MAX_IFACE];
int vendor, product;
char *dev_name, devpath[32];
int nports;
int disabled;
int usb_version; // 1 or 2
/*
* Units
*/
usb_audio_unit_t units[MAX_UNIT];
int nunits;
char unit_counters[7]; // For TY_* identifiers
/*
* Mixer stuff
*/
int mixer_dev;
void *mixer_usbdev;
int devmask, recmask, stereodevs, recsrc;
int rec_unit;
int num_recdevs;
int recdevs[32];
int *levels;
usb_control_t controls[MAX_CONTROLS];
int ncontrols;
/* Audio stuff */
int num_audio_engines, num_inputs, num_outputs;
ossusb_portc portc[MAX_PORTC];
/* MIDI stuff */
int num_mididevs;
ossusb_midic midic[MAX_MIDIC];
unsigned char *playbuf;
oss_dma_handle_t playbuf_dma_handle;
udi_usb_request_t *output_pipe;
int output_busy;
#define Q_MAX 4096
unsigned char queue[Q_MAX];
int q_nbytes;
unsigned char *recbuf;
oss_dma_handle_t recbuf_dma_handle;
udi_usb_request_t *input_pipe;
udi_endpoint_handle_t *input_endpoint_handle;
};
extern int usb_trace, usb_quiet;
#define UDB(x) {if (usb_trace) x;}
extern ossusb_devc *ossusb_init_audiostream (ossusb_devc * devc,
udi_usb_devc * usbdev, int inum,
int reinit);
extern ossusb_devc *ossusb_init_midistream (ossusb_devc * devc,
udi_usb_devc * usbdev, int inum,
int reinit);
extern void ossusb_disconnect_midistream (ossusb_devc * devc);
extern void ossusb_dump_desc (unsigned char *desc, int cfg_len);
extern unsigned int ossusb_get_int (unsigned char *p, int nbytes);
extern int ossusb_change_altsetting (int dev, int ctrl, unsigned int cmd,
int value);
extern void ossusb_create_altset_control(int dev, int portc_num, int nalt, char *name);
#endif
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