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lsusb.c
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lsusb.c
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/*****************************************************************************/
/*
* lsusb.c -- lspci like utility for the USB bus
*
* Copyright (C) 1999-2001, 2003
* Thomas Sailer (t.sailer@alumni.ethz.ch)
* Copyright (C) 2003-2005 David Brownell
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*****************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdarg.h>
#include <usb.h>
/* NOTE: that should be <libusb.h> and it should include
* <linux/usb_ch9.h> ... without it, we keep accumulating
* potentially broken variants of standard types ...
*/
#include "names.h"
#include "devtree.h"
#include "usbmisc.h"
#define _GNU_SOURCE
#include <getopt.h>
/* from USB 2.0 spec and updates */
#define USB_DT_DEVICE_QUALIFIER 0x06
#define USB_DT_OTHER_SPEED_CONFIG 0x07
#define USB_DT_OTG 0x09
#define USB_DT_DEBUG 0x0a
#define USB_DT_INTERFACE_ASSOCIATION 0x0b
/* convention suggested by common class spec */
#define USB_DT_CS_INTERFACE 0x24
#define USB_DT_CS_ENDPOINT 0x25
#ifndef USB_CLASS_VIDEO
#define USB_CLASS_VIDEO 0x0e
#endif
#define VERBLEVEL_DEFAULT 0 /* 0 gives lspci behaviour; 1, lsusb-0.9 */
#define CTRL_RETRIES 2
#define CTRL_TIMEOUT (5*1000) /* milliseconds */
static const char *procbususb = "/proc/bus/usb";
static unsigned int verblevel = VERBLEVEL_DEFAULT;
static int do_report_desc = 1;
static void dump_interface(struct usb_dev_handle *dev, struct usb_interface *interface);
static void dump_endpoint(struct usb_dev_handle *dev, struct usb_interface_descriptor *interface, struct usb_endpoint_descriptor *endpoint);
static void dump_audiocontrol_interface(struct usb_dev_handle *dev, unsigned char *buf);
static void dump_audiostreaming_interface(unsigned char *buf);
static void dump_midistreaming_interface(struct usb_dev_handle *dev, unsigned char *buf);
static void dump_videocontrol_interface(struct usb_dev_handle *dev, unsigned char *buf);
static void dump_videostreaming_interface(unsigned char *buf);
static char *dump_comm_descriptor(struct usb_dev_handle *dev, unsigned char *buf, char *indent);
static void dump_hid_device(struct usb_dev_handle *dev, struct usb_interface_descriptor *interface, unsigned char *buf);
static void dump_audiostreaming_endpoint(unsigned char *buf);
static void dump_midistreaming_endpoint(unsigned char *buf);
static void dump_hub(char *prefix, unsigned char *p, int has_tt);
static void dump_ccid_device(unsigned char *buf);
/* ---------------------------------------------------------------------- */
static unsigned int convert_le_u32 (const unsigned char *buf)
{
return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
}
/* ---------------------------------------------------------------------- */
/* workaround libusb API goofs: "byte" should never be sign extended;
* using "char" is trouble. Likewise, sizes should never be negative.
*/
static inline int typesafe_control_msg(usb_dev_handle *dev,
unsigned char requesttype, unsigned char request,
int value, int index,
unsigned char *bytes, unsigned size, int timeout)
{
return usb_control_msg(dev, requesttype, request, value, index,
(char *) bytes, (int) size, timeout);
}
#define usb_control_msg typesafe_control_msg
/* ---------------------------------------------------------------------- */
int lprintf(unsigned int vl, const char *format, ...)
{
va_list ap;
int r;
if (vl > verblevel)
return 0;
va_start(ap, format);
r = vfprintf(stderr, format, ap);
va_end(ap);
if (!vl)
exit(1);
return r;
}
/* ---------------------------------------------------------------------- */
static int get_string(struct usb_dev_handle *dev, char* buf, size_t size, u_int8_t id)
{
int ret;
if (id) {
ret = usb_get_string_simple(dev, id, buf, size);
if (ret <= 0) {
buf[0] = 0;
return 0;
}
else
return ret;
}
else {
buf[0] = 0;
return 0;
}
}
static int get_vendor_string(char *buf, size_t size, u_int16_t vid)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_vendor(vid)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_product_string(char *buf, size_t size, u_int16_t vid, u_int16_t pid)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_product(vid, pid)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_class_string(char *buf, size_t size, u_int8_t cls)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_class(cls)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_subclass_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_subclass(cls, subcls)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_protocol_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls, u_int8_t proto)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_protocol(cls, subcls, proto)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_audioterminal_string(char *buf, size_t size, u_int16_t termt)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_audioterminal(termt)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_videoterminal_string(char *buf, size_t size, u_int16_t termt)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_videoterminal(termt)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static const char *get_guid(unsigned char *buf)
{
static char guid[39];
sprintf(guid, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
buf[3], buf[2], buf[1], buf[0], buf[5], buf[4], buf[7], buf[6],
buf[8], buf[9], buf[10], buf[11], buf[12], buf[13], buf[14],
buf[15]);
return guid;
}
/* ---------------------------------------------------------------------- */
static void dump_bytes(unsigned char *buf, unsigned int len)
{
unsigned int i;
for (i = 0; i < len; i++)
printf(" %02x", buf[i]);
printf("\n");
}
static void dump_junk(unsigned char *buf, const char *indent, unsigned int len)
{
unsigned int i;
if (buf[0] <= len)
return;
printf("%sjunk at descriptor end:", indent);
for (i = len; i < buf[0]; i++)
printf(" %02x", buf[i]);
printf("\n");
}
/*
* General config descriptor dump
*/
static void dump_device(
struct usb_dev_handle *dev,
struct usb_device_descriptor *descriptor
)
{
char vendor[128], product[128];
char cls[128], subcls[128], proto[128];
char mfg[128], prod[128], serial[128];
get_vendor_string(vendor, sizeof(vendor), descriptor->idVendor);
get_product_string(product, sizeof(product), descriptor->idVendor, descriptor->idProduct);
get_class_string(cls, sizeof(cls), descriptor->bDeviceClass);
get_subclass_string(subcls, sizeof(subcls), descriptor->bDeviceClass, descriptor->bDeviceSubClass);
get_protocol_string(proto, sizeof(proto), descriptor->bDeviceClass, descriptor->bDeviceSubClass, descriptor->bDeviceProtocol);
get_string(dev, mfg, sizeof(mfg), descriptor->iManufacturer);
get_string(dev, prod, sizeof(prod), descriptor->iProduct);
get_string(dev, serial, sizeof(serial), descriptor->iSerialNumber);
printf("Device Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bcdUSB %2x.%02x\n"
" bDeviceClass %5u %s\n"
" bDeviceSubClass %5u %s\n"
" bDeviceProtocol %5u %s\n"
" bMaxPacketSize0 %5u\n"
" idVendor 0x%04x %s\n"
" idProduct 0x%04x %s\n"
" bcdDevice %2x.%02x\n"
" iManufacturer %5u %s\n"
" iProduct %5u %s\n"
" iSerial %5u %s\n"
" bNumConfigurations %5u\n",
descriptor->bLength, descriptor->bDescriptorType, descriptor->bcdUSB >> 8, descriptor->bcdUSB & 0xff,
descriptor->bDeviceClass, cls, descriptor->bDeviceSubClass, subcls, descriptor->bDeviceProtocol, proto,
descriptor->bMaxPacketSize0, descriptor->idVendor, vendor, descriptor->idProduct, product,
descriptor->bcdDevice >> 8, descriptor->bcdDevice & 0xff, descriptor->iManufacturer, mfg,
descriptor->iProduct, prod, descriptor->iSerialNumber, serial, descriptor->bNumConfigurations);
}
static void dump_association(struct usb_dev_handle *dev, unsigned char *buf)
{
char cls[128], subcls[128], proto[128];
char func[128];
get_class_string(cls, sizeof(cls), buf[4]);
get_subclass_string(subcls, sizeof(subcls), buf[4], buf[5]);
get_protocol_string(proto, sizeof(proto), buf[4], buf[5], buf[6]);
get_string(dev, func, sizeof(func), buf[7]);
printf(" Interface Association:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bFirstInterface %5u\n"
" bInterfaceCount %5u\n"
" bFunctionClass %5u %s\n"
" bFunctionSubClass %5u %s\n"
" bFunctionProtocol %5u %s\n"
" iFunction %5u %s\n",
buf[0], buf[1],
buf[2], buf[3],
buf[4], cls,
buf[5], subcls,
buf[6], proto,
buf[7], func);
}
static void dump_config(struct usb_dev_handle *dev, struct usb_config_descriptor *config)
{
char cfg[128];
int i;
get_string(dev, cfg, sizeof(cfg), config->iConfiguration);
printf(" Configuration Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" wTotalLength %5u\n"
" bNumInterfaces %5u\n"
" bConfigurationValue %5u\n"
" iConfiguration %5u %s\n"
" bmAttributes 0x%02x\n",
config->bLength, config->bDescriptorType, config->wTotalLength,
config->bNumInterfaces, config->bConfigurationValue, config->iConfiguration,
cfg, config->bmAttributes);
if (!(config->bmAttributes & 0x80))
printf(" (Missing must-be-set bit!)\n");
if (config->bmAttributes & 0x40)
printf(" Self Powered\n");
else
printf(" (Bus Powered)\n");
if (config->bmAttributes & 0x20)
printf(" Remote Wakeup\n");
if (config->bmAttributes & 0x10)
printf(" Battery Powered\n");
printf(" MaxPower %5umA\n", config->MaxPower * 2);
/* avoid re-ordering or hiding descriptors for display */
if (config->extralen) {
int size = config->extralen;
unsigned char *buf = config->extra;
while (size >= 2) {
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
default:
/* often a misplaced class descriptor */
printf(" UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
size -= buf[0];
buf += buf[0];
}
}
for (i = 0 ; i < config->bNumInterfaces ; i++)
dump_interface(dev, &config->interface[i]);
}
static void dump_altsetting(struct usb_dev_handle *dev, struct usb_interface_descriptor *interface)
{
char cls[128], subcls[128], proto[128];
char ifstr[128];
unsigned char *buf;
unsigned size, i;
get_class_string(cls, sizeof(cls), interface->bInterfaceClass);
get_subclass_string(subcls, sizeof(subcls), interface->bInterfaceClass, interface->bInterfaceSubClass);
get_protocol_string(proto, sizeof(proto), interface->bInterfaceClass, interface->bInterfaceSubClass, interface->bInterfaceProtocol);
get_string(dev, ifstr, sizeof(ifstr), interface->iInterface);
printf(" Interface Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bInterfaceNumber %5u\n"
" bAlternateSetting %5u\n"
" bNumEndpoints %5u\n"
" bInterfaceClass %5u %s\n"
" bInterfaceSubClass %5u %s\n"
" bInterfaceProtocol %5u %s\n"
" iInterface %5u %s\n",
interface->bLength, interface->bDescriptorType, interface->bInterfaceNumber,
interface->bAlternateSetting, interface->bNumEndpoints, interface->bInterfaceClass, cls,
interface->bInterfaceSubClass, subcls, interface->bInterfaceProtocol, proto,
interface->iInterface, ifstr);
/* avoid re-ordering or hiding descriptors for display */
if (interface->extralen)
{
size = interface->extralen;
buf = interface->extra;
while (size >= 2 * sizeof(u_int8_t))
{
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
case USB_DT_CS_INTERFACE:
switch(interface->bInterfaceClass) {
case USB_CLASS_AUDIO:
switch(interface->bInterfaceSubClass) {
case 1:
dump_audiocontrol_interface(dev, buf);
break;
case 2:
dump_audiostreaming_interface(buf);
break;
case 3:
dump_midistreaming_interface(dev, buf);
break;
}
break;
case USB_CLASS_COMM:
dump_comm_descriptor(dev, buf,
" ");
break;
case USB_CLASS_VIDEO:
switch(interface->bInterfaceSubClass) {
case 1:
dump_videocontrol_interface(dev, buf);
break;
case 2:
dump_videostreaming_interface(buf);
break;
}
break;
default:
printf(" Class specific interface descriptor for " \
"class %u is unsupported\n", interface->bInterfaceClass);
}
break;
case USB_DT_HID:
if (interface->bInterfaceClass == USB_CLASS_HID)
dump_hid_device(dev, interface, buf);
if (interface->bInterfaceClass == 0x0b)
dump_ccid_device(buf);
break;
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
default:
/* often a misplaced class descriptor */
printf(" UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
size -= buf[0];
buf += buf[0];
}
}
for (i = 0 ; i < interface->bNumEndpoints ; i++)
dump_endpoint(dev, interface, &interface->endpoint[i]);
}
static void dump_interface(struct usb_dev_handle *dev, struct usb_interface *interface)
{
int i;
for (i = 0; i < interface->num_altsetting; i++)
dump_altsetting(dev, &interface->altsetting[i]);
}
static void dump_endpoint(struct usb_dev_handle *dev, struct usb_interface_descriptor *interface, struct usb_endpoint_descriptor *endpoint)
{
static const char *typeattr[] = { "Control", "Isochronous", "Bulk", "Interrupt" };
static const char *syncattr[] = { "None", "Asynchronous", "Adaptive", "Synchronous" };
static const char *usage[] = { "Data", "Feedback", "Implicit feedback Data", "(reserved)" };
static const char *hb[] = { "1x", "2x", "3x", "(?\?)" };
unsigned char *buf;
unsigned size;
printf(" Endpoint Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bEndpointAddress 0x%02x EP %u %s\n"
" bmAttributes %5u\n"
" Transfer Type %s\n"
" Synch Type %s\n"
" Usage Type %s\n"
" wMaxPacketSize 0x%04x %s %d bytes\n"
" bInterval %5u\n",
endpoint->bLength, endpoint->bDescriptorType, endpoint->bEndpointAddress, endpoint->bEndpointAddress & 0x0f,
(endpoint->bEndpointAddress & 0x80) ? "IN" : "OUT", endpoint->bmAttributes,
typeattr[endpoint->bmAttributes & 3], syncattr[(endpoint->bmAttributes >> 2) & 3],
usage[(endpoint->bmAttributes >> 4) & 3], endpoint->wMaxPacketSize,
hb[(endpoint->wMaxPacketSize >> 11) & 3],
endpoint->wMaxPacketSize & 0x3ff,
endpoint->bInterval);
/* only for audio endpoints */
if (endpoint->bLength == 9)
printf(" bRefresh %5u\n"
" bSynchAddress %5u\n",
endpoint->bRefresh, endpoint->bSynchAddress);
/* avoid re-ordering or hiding descriptors for display */
if (endpoint->extralen)
{
size = endpoint->extralen;
buf = endpoint->extra;
while (size >= 2 * sizeof(u_int8_t))
{
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
case USB_DT_CS_ENDPOINT:
if (interface->bInterfaceClass == 1 && interface->bInterfaceSubClass == 2)
dump_audiostreaming_endpoint(buf);
else if (interface->bInterfaceClass == 1 && interface->bInterfaceSubClass == 3)
dump_midistreaming_endpoint(buf);
break;
case USB_DT_CS_INTERFACE:
/* MISPLACED DESCRIPTOR ... less indent */
switch (interface->bInterfaceClass) {
case USB_CLASS_COMM:
case USB_CLASS_DATA: // comm data
dump_comm_descriptor(dev, buf,
" ");
break;
default:
printf(" INTERFACE CLASS: ");
dump_bytes(buf, buf[0]);
}
break;
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
default:
/* often a misplaced class descriptor */
printf(" UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
size -= buf[0];
buf += buf[0];
}
}
}
/* ---------------------------------------------------------------------- */
/*
* Audio Class descriptor dump
*/
static void dump_audiocontrol_interface(struct usb_dev_handle *dev, unsigned char *buf)
{
static const char *chconfig[] = {
"Left Front (L)", "Right Front (R)", "Center Front (C)", "Low Freqency Enhancement (LFE)",
"Left Surround (LS)", "Right Surround (RS)", "Left of Center (LC)", "Right of Center (RC)",
"Surround (S)", "Side Left (SL)", "Side Right (SR)", "Top (T)"
};
static const char *chftrcontrols[] = {
"Mute", "Volume", "Bass", "Mid", "Treble", "Graphic Equalizer", "Automatic Gain", "Delay", "Bass Boost", "Loudness"
};
unsigned int i, chcfg, j, k, N, termt;
char chnames[128], term[128], termts[128];
if (buf[1] != USB_DT_CS_INTERFACE)
printf(" Warning: Invalid descriptor\n");
else if (buf[0] < 3)
printf(" Warning: Descriptor too short\n");
printf(" AudioControl Interface Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bDescriptorSubtype %5u ",
buf[0], buf[1], buf[2]);
switch (buf[2]) {
case 0x01: /* HEADER */
printf("(HEADER)\n");
if (buf[0] < 8+buf[7])
printf(" Warning: Descriptor too short\n");
printf(" bcdADC %2x.%02x\n"
" wTotalLength %5u\n"
" bInCollection %5u\n",
buf[4], buf[3], buf[5] | (buf[6] << 8), buf[7]);
for(i = 0; i < buf[7]; i++)
printf(" baInterfaceNr(%2u) %5u\n", i, buf[8+i]);
dump_junk(buf, " ", 8+buf[7]);
break;
case 0x02: /* INPUT_TERMINAL */
printf("(INPUT_TERMINAL)\n");
get_string(dev, chnames, sizeof(chnames), buf[10]);
get_string(dev, term, sizeof(term), buf[11]);
termt = buf[4] | (buf[5] << 8);
get_audioterminal_string(termts, sizeof(termts), termt);
if (buf[0] < 12)
printf(" Warning: Descriptor too short\n");
chcfg = buf[8] | (buf[9] << 8);
printf(" bTerminalID %5u\n"
" wTerminalType 0x%04x %s\n"
" bAssocTerminal %5u\n"
" bNrChannels %5u\n"
" wChannelConfig 0x%04x\n",
buf[3], termt, termts, buf[6], buf[7], chcfg);
for (i = 0; i < 12; i++)
if ((chcfg >> i) & 1)
printf(" %s\n", chconfig[i]);
printf(" iChannelNames %5u %s\n"
" iTerminal %5u %s\n",
buf[10], chnames, buf[11], term);
dump_junk(buf, " ", 12);
break;
case 0x03: /* OUTPUT_TERMINAL */
printf("(OUTPUT_TERMINAL)\n");
get_string(dev, term, sizeof(term), buf[8]);
termt = buf[4] | (buf[5] << 8);
get_audioterminal_string(termts, sizeof(termts), termt);
if (buf[0] < 9)
printf(" Warning: Descriptor too short\n");
printf(" bTerminalID %5u\n"
" wTerminalType 0x%04x %s\n"
" bAssocTerminal %5u\n"
" bSourceID %5u\n"
" iTerminal %5u %s\n",
buf[3], termt, termts, buf[6], buf[7], buf[8], term);
dump_junk(buf, " ", 9);
break;
case 0x04: /* MIXER_UNIT */
printf("(MIXER_UNIT)\n");
j = buf[4];
k = buf[j+5];
if (j == 0 || k == 0) {
printf(" Warning: mixer with %5u input and %5u output channels.\n", j, k);
N = 0;
} else {
N = 1+(j*k-1)/8;
}
get_string(dev, chnames, sizeof(chnames), buf[8+j]);
get_string(dev, term, sizeof(term), buf[9+j+N]);
if (buf[0] < 10+j+N)
printf(" Warning: Descriptor too short\n");
chcfg = buf[6+j] | (buf[7+j] << 8);
printf(" bUnitID %5u\n"
" bNrInPins %5u\n",
buf[3], buf[4]);
for (i = 0; i < j; i++)
printf(" baSourceID(%2u) %5u\n", i, buf[5+i]);
printf(" bNrChannels %5u\n"
" wChannelConfig 0x%04x\n",
buf[5+j], chcfg);
for (i = 0; i < 12; i++)
if ((chcfg >> i) & 1)
printf(" %s\n", chconfig[i]);
printf(" iChannelNames %5u %s\n",
buf[8+j], chnames);
for (i = 0; i < N; i++)
printf(" bmControls 0x%02x\n", buf[9+j+i]);
printf(" iMixer %5u %s\n", buf[9+j+N], term);
dump_junk(buf, " ", 10+j+N);
break;
case 0x05: /* SELECTOR_UNIT */
printf("(SELECTOR_UNIT)\n");
if (buf[0] < 6+buf[4])
printf(" Warning: Descriptor too short\n");
get_string(dev, term, sizeof(term), buf[5+buf[4]]);
printf(" bUnitID %5u\n"
" bNrInPins %5u\n",
buf[3], buf[4]);
for (i = 0; i < buf[4]; i++)
printf(" baSource(%2u) %5u\n", i, buf[5+i]);
printf(" iSelector %5u %s\n",
buf[5+buf[4]], term);
dump_junk(buf, " ", 6+buf[4]);
break;
case 0x06: /* FEATURE_UNIT */
printf("(FEATURE_UNIT)\n");
j = buf[5];
if (!j)
j = 1;
k = (buf[0] - 7) / j;
if (buf[0] < 7+buf[5]*k)
printf(" Warning: Descriptor too short\n");
get_string(dev, term, sizeof(term), buf[6+buf[5]*k]);
printf(" bUnitID %5u\n"
" bSourceID %5u\n"
" bControlSize %5u\n",
buf[3], buf[4], buf[5]);
for (i = 0; i < k; i++) {
chcfg = buf[6+buf[5]*i];
if (buf[5] > 1)
chcfg |= (buf[7+buf[5]*i] << 8);
for (j = 0; j < buf[5]; j++)
printf(" bmaControls(%2u) 0x%02x\n", i, buf[6+buf[5]*i+j]);
for (j = 0; j < 10; j++)
if ((chcfg >> j) & 1)
printf(" %s\n", chftrcontrols[j]);
}
printf(" iFeature %5u %s\n", buf[6+buf[5]*k], term);
dump_junk(buf, " ", 7+buf[5]*k);
break;
case 0x07: /* PROCESSING_UNIT */
printf("(PROCESSING_UNIT)\n");
j = buf[6];
k = buf[11+j];
get_string(dev, chnames, sizeof(chnames), buf[10+j]);
get_string(dev, term, sizeof(term), buf[12+j+k]);
chcfg = buf[8+j] | (buf[9+j] << 8);
if (buf[0] < 13+j+k)
printf(" Warning: Descriptor too short\n");
printf(" bUnitID %5u\n"
" wProcessType %5u\n"
" bNrPins %5u\n",
buf[3], buf[4] | (buf[5] << 8), buf[6]);
for (i = 0; i < j; i++)
printf(" baSourceID(%2u) %5u\n", i, buf[7+i]);
printf(" bNrChannels %5u\n"
" wChannelConfig 0x%04x\n", buf[7+j], chcfg);
for (i = 0; i < 12; i++)
if ((chcfg >> i) & 1)
printf(" %s\n", chconfig[i]);
printf(" iChannelNames %5u %s\n"
" bControlSize %5u\n", buf[10+j], chnames, buf[11+j]);
for (i = 0; i < k; i++)
printf(" bmControls(%2u) 0x%02x\n", i, buf[12+j+i]);
if (buf[12+j] & 1)
printf(" Enable Processing\n");
printf(" iProcessing %5u %s\n"
" Process-Specific ", buf[12+j+k], term);
dump_bytes(buf+(13+j+k), buf[0]-(13+j+k));
break;
case 0x08: /* EXTENSION_UNIT */
printf("(EXTENSION_UNIT)\n");
j = buf[6];
k = buf[11+j];
get_string(dev, chnames, sizeof(chnames), buf[10+j]);
get_string(dev, term, sizeof(term), buf[12+j+k]);
chcfg = buf[8+j] | (buf[9+j] << 8);
if (buf[0] < 13+j+k)
printf(" Warning: Descriptor too short\n");
printf(" bUnitID %5u\n"
" wExtensionCode %5u\n"
" bNrPins %5u\n",
buf[3], buf[4] | (buf[5] << 8), buf[6]);
for (i = 0; i < j; i++)
printf(" baSourceID(%2u) %5u\n", i, buf[7+i]);
printf(" bNrChannels %5u\n"
" wChannelConfig %5u\n", buf[7+j], chcfg);
for (i = 0; i < 12; i++)
if ((chcfg >> i) & 1)
printf(" %s\n", chconfig[i]);
printf(" iChannelNames %5u %s\n"
" bControlSize %5u\n", buf[10+j], chnames, buf[11+j]);
for (i = 0; i < k; i++)
printf(" bmControls(%2u) 0x%02x\n", i, buf[12+j+i]);
if (buf[12+j] & 1)
printf(" Enable Processing\n");
printf(" iExtension %5u %s\n",
buf[12+j+k], term);
dump_junk(buf, " ", 13+j+k);
break;
default:
printf("(unknown)\n"
" Invalid desc subtype:");
dump_bytes(buf+3, buf[0]-3);
break;
}
}
static void dump_audiostreaming_interface(unsigned char *buf)
{
static const char *fmtItag[] = { "TYPE_I_UNDEFINED", "PCM", "PCM8", "IEEE_FLOAT", "ALAW", "MULAW" };
static const char *fmtIItag[] = { "TYPE_II_UNDEFINED", "MPEG", "AC-3" };
static const char *fmtIIItag[] = { "TYPE_III_UNDEFINED", "IEC1937_AC-3", "IEC1937_MPEG-1_Layer1",
"IEC1937_MPEG-Layer2/3/NOEXT", "IEC1937_MPEG-2_EXT",
"IEC1937_MPEG-2_Layer1_LS", "IEC1937_MPEG-2_Layer2/3_LS" };
unsigned int i, j, fmttag;
const char *fmtptr = "undefined";
if (buf[1] != USB_DT_CS_INTERFACE)
printf(" Warning: Invalid descriptor\n");
else if (buf[0] < 3)
printf(" Warning: Descriptor too short\n");
printf(" AudioStreaming Interface Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bDescriptorSubtype %5u ",
buf[0], buf[1], buf[2]);
switch (buf[2]) {
case 0x01: /* AS_GENERAL */
printf("(AS_GENERAL)\n");
if (buf[0] < 7)
printf(" Warning: Descriptor too short\n");
fmttag = buf[5] | (buf[6] << 8);
if (fmttag <= 5)
fmtptr = fmtItag[fmttag];
else if (fmttag >= 0x1000 && fmttag <= 0x1002)
fmtptr = fmtIItag[fmttag & 0xfff];
else if (fmttag >= 0x2000 && fmttag <= 0x2006)
fmtptr = fmtIIItag[fmttag & 0xfff];
printf(" bTerminalLink %5u\n"
" bDelay %5u frames\n"
" wFormatTag %5u %s\n",
buf[3], buf[4], fmttag, fmtptr);
dump_junk(buf, " ", 7);
break;
case 0x02: /* FORMAT_TYPE */
printf("(FORMAT_TYPE)\n");
if (buf[0] < 8)
printf(" Warning: Descriptor too short\n");
printf(" bFormatType %5u ", buf[3]);
switch (buf[3]) {
case 0x01: /* FORMAT_TYPE_I */
printf("(FORMAT_TYPE_I)\n");
j = buf[7] ? (buf[7]*3+8) : 14;
if (buf[0] < j)
printf(" Warning: Descriptor too short\n");
printf(" bNrChannels %5u\n"
" bSubframeSize %5u\n"
" bBitResolution %5u\n"
" bSamFreqType %5u %s\n",
buf[4], buf[5], buf[6], buf[7], buf[7] ? "Discrete" : "Continuous");
if (!buf[7])
printf(" tLowerSamFreq %7u\n"
" tUpperSamFreq %7u\n",
buf[8] | (buf[9] << 8) | (buf[10] << 16), buf[11] | (buf[12] << 8) | (buf[13] << 16));
else
for (i = 0; i < buf[7]; i++)
printf(" tSamFreq[%2u] %7u\n", i,
buf[8+3*i] | (buf[9+3*i] << 8) | (buf[10+3*i] << 16));
dump_junk(buf, " ", j);
break;
case 0x02: /* FORMAT_TYPE_II */
printf("(FORMAT_TYPE_II)\n");
j = buf[8] ? (buf[7]*3+9) : 15;
if (buf[0] < j)
printf(" Warning: Descriptor too short\n");
printf(" wMaxBitRate %5u\n"
" wSamplesPerFrame %5u\n"
" bSamFreqType %5u %s\n",
buf[4] | (buf[5] << 8), buf[6] | (buf[7] << 8), buf[8], buf[8] ? "Discrete" : "Continuous");
if (!buf[8])
printf(" tLowerSamFreq %7u\n"
" tUpperSamFreq %7u\n",
buf[9] | (buf[10] << 8) | (buf[11] << 16), buf[12] | (buf[13] << 8) | (buf[14] << 16));
else
for (i = 0; i < buf[8]; i++)
printf(" tSamFreq[%2u] %7u\n", i,
buf[9+3*i] | (buf[10+3*i] << 8) | (buf[11+3*i] << 16));
dump_junk(buf, " ", j);
break;
case 0x03: /* FORMAT_TYPE_III */
printf("(FORMAT_TYPE_III)\n");
j = buf[7] ? (buf[7]*3+8) : 14;
if (buf[0] < j)
printf(" Warning: Descriptor too short\n");
printf(" bNrChannels %5u\n"
" bSubframeSize %5u\n"
" bBitResolution %5u\n"
" bSamFreqType %5u %s\n",
buf[4], buf[5], buf[6], buf[7], buf[7] ? "Discrete" : "Continuous");
if (!buf[7])
printf(" tLowerSamFreq %7u\n"
" tUpperSamFreq %7u\n",
buf[8] | (buf[9] << 8) | (buf[10] << 16), buf[11] | (buf[12] << 8) | (buf[13] << 16));
else
for (i = 0; i < buf[7]; i++)
printf(" tSamFreq[%2u] %7u\n", i,
buf[8+3*i] | (buf[9+3*i] << 8) | (buf[10+3*i] << 16));
dump_junk(buf, " ", j);
break;
default:
printf("(unknown)\n"
" Invalid desc format type:");
dump_bytes(buf+4, buf[0]-4);
}
break;
case 0x03: /* FORMAT_SPECIFIC */
printf("(FORMAT_SPECIFIC)\n");
if (buf[0] < 5)
printf(" Warning: Descriptor too short\n");
fmttag = buf[3] | (buf[4] << 8);
if (fmttag <= 5)
fmtptr = fmtItag[fmttag];
else if (fmttag >= 0x1000 && fmttag <= 0x1002)
fmtptr = fmtIItag[fmttag & 0xfff];
else if (fmttag >= 0x2000 && fmttag <= 0x2006)
fmtptr = fmtIIItag[fmttag & 0xfff];
printf(" wFormatTag %5u %s\n", fmttag, fmtptr);
switch (fmttag) {
case 0x1001: /* MPEG */
if (buf[0] < 8)
printf(" Warning: Descriptor too short\n");
printf(" bmMPEGCapabilities 0x%04x\n",
buf[5] | (buf[6] << 8));
if (buf[5] & 0x01)
printf(" Layer I\n");
if (buf[5] & 0x02)
printf(" Layer II\n");
if (buf[5] & 0x04)
printf(" Layer III\n");
if (buf[5] & 0x08)
printf(" MPEG-1 only\n");
if (buf[5] & 0x10)
printf(" MPEG-1 dual-channel\n");
if (buf[5] & 0x20)
printf(" MPEG-2 second stereo\n");
if (buf[5] & 0x40)
printf(" MPEG-2 7.1 channel augmentation\n");
if (buf[5] & 0x80)
printf(" Adaptive multi-channel prediction\n");
printf(" MPEG-2 multilingual support: ");
switch (buf[6] & 3) {
case 0:
printf("Not supported\n");
break;
case 1:
printf("Supported at Fs\n");
break;
case 2:
printf("Reserved\n");
break;
default:
printf("Supported at Fs and 1/2Fs\n");
break;
}
printf(" bmMPEGFeatures 0x%02x\n", buf[7]);
printf(" Internal Dynamic Range Control: ");
switch ((buf[7] << 4) & 3) {
case 0:
printf("not supported\n");
break;
case 1:
printf("supported but not scalable\n");
break;
case 2:
printf("scalable, common boost and cut scaling value\n");
break;
default:
printf("scalable, separate boost and cut scaling value\n");
break;
}