DecodeAudioInterfaceDescriptor.m [plain text]
//
// DecodeAudioInterfaceDescriptor.m
// IOUSBFamily
//
// Created by Fernando Urbina on Mon Dec 02 2002.
// Copyright (c) 2002 __MyCompanyName__. All rights reserved.
//
#import "DecodeAudioInterfaceDescriptor.h"
@implementation DecodeAudioInterfaceDescriptor
+(void)DecodeAudioInterfaceDescriptor:(UInt8 *)descriptor forDevice:(UInt16)deviceNumber atDepth:(UInt16)depth forNode:(Node *)node subClass:(UInt8)interfaceSubClass
{
static unsigned char buf[256];
static unsigned char buf2[256];
auto AudioCtrlHdrDescriptorPtr pAudioHdrDesc;
auto AudioCtrlInTermDescriptorPtr pAudioInTermDesc;
auto AudioCtrlOutTermDescriptorPtr pAudioOutTermDesc;
auto AudioCtrlMixerDescriptorPtr pAudioMixerDesc;
auto AudioCtrlSelectorDescriptorPtr pAudioSelectorDesc;
auto AudioCtrlFeatureDescriptorPtr pAudioFeatureDesc;
auto AudioCtrlExtDescriptorPtr pAudioExtDesc;
auto acProcessingDescriptorPtr pAudioProcDesc;
auto acProcessingDescriptorContPtr pAudioProcContDesc;
auto CSAS_InterfaceDescriptorPtr pAudioGeneralDesc;
auto CSAS_FormatTypeIDescPtr pAudioFormatTypeDesc;
UInt16 i,n,ch, freqIndex, tempIndex;
UInt8 *p, *srcIdPtr;
char *s;
UInt16 srcIndex;
GenericAudioDescriptorPtr desc = (GenericAudioDescriptorPtr) descriptor;
if ( ((GenericAudioDescriptorPtr)desc)->descType == kUSBAudioEndPointDesc )
{
IOUSBEndpointDescriptor * pEndpointDesc = ( IOUSBEndpointDescriptor * ) desc;
if( sizeof( AS_IsocEndPtDesc ) == desc->descLen )
sprintf((char *)buf, "Standard AS Audio EndPoint");
else
sprintf((char *)buf, "Class-Specific AS Audio EndPoint");
sprintf((char *)buf2, " - ((pEndpointDesc->bmAttributes & 0x3) == 3) ? "Interrupt":
((pEndpointDesc->bmAttributes & 0x3) == 2) ? "Bulk":
((pEndpointDesc->bmAttributes & 0x3) == 1) ? "Isochronous" : "Control");
strcat((char *)buf, (char *)buf2);
sprintf((char *)buf2, " strcat((char *)buf, (char *)buf2);
[self PrintKeyVal:buf val:"" forDevice:deviceNumber atDepth:depth forNode:node];
sprintf((char *)buf, "0x ((pEndpointDesc->bmAttributes & 0x01) == 0x01) ? "Sample Frequency,":"",
((pEndpointDesc->bmAttributes & 0x02) == 0x02) ? "Pitch,":"",
((pEndpointDesc->bmAttributes & 0x80) == 0x80) ? "MaxPacketsOnly":"" );
[self PrintKeyVal:"Attributes:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, "0x (0 == ((CSAS_IsocEndPtDescPtr)pEndpointDesc)->bLockDelayUnits) ? "(UNDEFINED)" :
(1 == ((CSAS_IsocEndPtDescPtr)pEndpointDesc)->bLockDelayUnits) ? "(Milliseconds)" :
(2 == ((CSAS_IsocEndPtDescPtr)pEndpointDesc)->bLockDelayUnits) ? "(Decoded PCM Samples)" :
"(RESERVED)" );
[self PrintKeyVal:"bLockDelayUnits:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " (1 == ((CSAS_IsocEndPtDescPtr)pEndpointDesc)->bLockDelayUnits) ? "ms" :
(2 == ((CSAS_IsocEndPtDescPtr)pEndpointDesc)->bLockDelayUnits) ? "Decoded PCM Samples" :
"" );
[self PrintKeyVal:"wLockDelay:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
}
if ( ((GenericAudioDescriptorPtr)desc)->descType != CS_INTERFACE )
return;
if( AC_CONTROL_SUBCLASS == interfaceSubClass )
{
switch ( ((GenericAudioDescriptorPtr)desc)->descSubType )
{
case ACS_HEADER:
sprintf((char *)buf, "Audio Control Class Specific Header");
break;
case ACS_INPUT_TERMINAL:
sprintf((char *)buf, "Audio Class Specific Input Terminal");
break;
case ACS_OUTPUT_TERMINAL:
sprintf((char *)buf, "Audio Class Specific Ouput Terminal");
break;
case ACS_MIXER_UNIT:
sprintf((char *)buf, "Audio Class Specific Mixer Unit");
break;
case ACS_SELECTOR_UNIT:
sprintf((char *)buf, "Audio Class Specific Selector Unit");
break;
case ACS_FEATURE_UNIT:
sprintf((char *)buf, "Audio Class Specific Feature");
break;
case ACS_PROCESSING_UNIT:
sprintf((char *)buf, "Audio Class Specific Processing Unit");
break;
case ACS_EXTENSION_UNIT:
sprintf((char *)buf, "Audio Class Specific Extension");
break;
default:
sprintf((char *)buf, "Uknown AC_CONTROL_SUBCLASS SubClass");
}
}
else if( AC_STREAM_SUBCLASS == interfaceSubClass )
{
switch ( ((GenericAudioDescriptorPtr)desc)->descSubType )
{
case ACS_HEADER:
sprintf((char *)buf, "Audio Control Class Specific Header");
break;
case ACS_FORMAT_TYPE:
sprintf((char *)buf, "Audio Class Specific Audio Data Format");
break;
break;
default:
sprintf((char *)buf, "Uknown AC_STREAM_SUBCLASS Type");
}
}
else
sprintf((char *)buf, "Uknown Interface SubClass Type");
[self PrintKeyVal:buf val:"" forDevice:deviceNumber atDepth:depth forNode:node];
if ( interfaceSubClass==0x01 ) // Audio Control
switch ( ((GenericAudioDescriptorPtr)desc)->descSubType )
{
// Once the header is read, should the code read the rest of the desc. since the
// happens to include a total size?
// Refer to USB Device Class Definition for Audio Devices 1.0 p. 37.
case ACS_HEADER:
pAudioHdrDesc = (AudioCtrlHdrDescriptorPtr)desc;
i = Swap16(&pAudioHdrDesc->descVersNum);
sprintf((char *)buf, " (i>>12)&0x000f, (i>>8)&0x000f, (i>>4)&0x000f, (i>>0)&0x000f );
[self PrintKeyVal:"Descriptor Version Number:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Class Specific Size:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Number of Audio Interfaces:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
//Haven't seen this array filled with more than 1 yet.
for (i=0,p=&pAudioHdrDesc->descInterfaceNum[0]; i<pAudioHdrDesc->descAICNum; i++,p++ )
{
sprintf((char *)buf, " [self PrintKeyVal:"Audio Interface Number:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
}
break;
case ACS_INPUT_TERMINAL:
pAudioInTermDesc = (AudioCtrlInTermDescriptorPtr)desc;
//sprintf((char *)buf, "ACS_INPUT_TERMINAL" );
//// AddStringChild(item, buf);
sprintf((char *)buf, " [self PrintKeyVal:"Terminal ID" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
// To get input terminal types refer to USB PDF files for Termt10.pdf pp. 7-8.
switch ( Swap16(&pAudioInTermDesc->descTermType) )
{
//Should 0x0100 to 0x01ff be included here? They are not input terminal
// types, but Jazz says they are.
case 0x100: s="USB Undefined"; break;
case 0x101: s="USB streaming"; break;
case 0x1ff: s="USB vendor specific"; break;
case 0x200: s="Input Undefined"; break;
case 0x201: s="Microphone"; break;
case 0x202: s="Desktop microphone"; break;
case 0x203: s="Personal microphone"; break;
case 0x204: s="Omni-directional microphone"; break;
case 0x205: s="Microphone array"; break;
case 0x206: s="Processing microphone array"; break;
case 0x400: s="Bi-directional Terminal, Undefined"; break;
case 0x401: s="Bi-directional Handset"; break;
case 0x402: s="Bi-directional Headset"; break;
case 0x403: s="Bi-directional Speakerphone (no echo reduction)"; break;
case 0x404: s="Bi-directional Speakerphone (echo supression)"; break;
case 0x405: s="Bi-directional Speakerphone (echo canceling)"; break;
case 0x500: s="Telephony Terminal, Undefined"; break;
case 0x501: s="Telephony Phoneline"; break;
case 0x502: s="Telephony Telephone"; break;
case 0x503: s="Telephony Down Line Phone"; break;
case 0x600: s="External Undefined"; break;
case 0x601: s="Analog connector"; break;
case 0x602: s="Digital audio connector"; break;
case 0x603: s="Line connector"; break;
case 0x604: s="Legacy audio connector"; break;
case 0x605: s="S/PDIF interface"; break;
case 0x606: s="1394 DA stream"; break;
case 0x607: s="1394 DV stream soundtrack"; break;
case 0x700: s="Embedded Terminal Undefined"; break;
case 0x703: s="Embedded Audio CD"; break;
case 0x704: s="Embedded Digital Audio Tape"; break;
case 0x705: s="Embedded Digital Compact Cassette"; break;
case 0x706: s="Embedded MiniDisk"; break;
case 0x707: s="Embedded Analog Tape"; break;
case 0x708: s="Embedded Vinyl Record Player"; break;
case 0x709: s="Embedded VCR Audio"; break;
case 0x70a: s="Embedded Video Disk Audio"; break;
case 0x70b: s="Embedded DVD Audio"; break;
case 0x70c: s="Embedded TV Tuner Audio"; break;
case 0x70d: s="Embedded Satellite Receiver Audio"; break;
case 0x70e: s="Embedded Cable Tuner Audio"; break;
case 0x70f: s="Embedded DSS Audio"; break;
case 0x710: s="Embedded Radio Receiver"; break;
case 0x712: s="Embedded Multi-track Recorder"; break;
case 0x713: s="Embedded Synthesizer"; break;
default: s="Invalid Input Terminal Type";
}
sprintf((char *)buf, "0x [self PrintKeyVal:"Input Terminal Type:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
if( !pAudioInTermDesc->descOutTermID )
{
sprintf((char *)buf, " }
else
{
sprintf((char *)buf, " }
[self PrintKeyVal:"OutTerminal ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Number of Channels:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
Swap16(&pAudioInTermDesc->descChannelConfig);
sprintf((char *)buf, " (pAudioInTermDesc->descChannelConfig) & ( 1 << 15 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 14 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 13 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 12 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 11 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 10 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 9 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 8 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 7 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 6 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 5 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 4 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 3 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 2 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 1 ) ? 1 : 0,
(pAudioInTermDesc->descChannelConfig) & ( 1 << 0 ) ? 1 : 0 );
[self PrintKeyVal:"Spatial config of channels:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
for( tempIndex = 0; tempIndex < 12; tempIndex++ )
{
if( pAudioInTermDesc->descChannelConfig & (1 << tempIndex) )
{
switch( tempIndex )
{
case 11: sprintf((char *)buf, " ^ÉÉÉÉÉÉÉÉÉÉÉÉ Top"); break;
case 10: sprintf((char *)buf, " ^ÉÉÉÉÉÉÉÉÉÉÉ Side Right"); break;
case 9: sprintf((char *)buf, " ^ÉÉÉÉÉÉÉÉÉÉ Side Left"); break;
case 8: sprintf((char *)buf, " ^ÉÉÉÉÉÉÉÉÉ Surround"); break;
case 7: sprintf((char *)buf, " ^ÉÉÉÉÉÉÉÉ Right of Center"); break;
case 6: sprintf((char *)buf, " ^ÉÉÉÉÉÉÉ Left of Center"); break;
case 5: sprintf((char *)buf, " ^ÉÉÉÉÉÉ Right Surround"); break;
case 4: sprintf((char *)buf, " ^ÉÉÉÉÉ Left Surround"); break;
case 3: sprintf((char *)buf, " ^ÉÉÉÉ Low Frequency Effects"); break;
case 2: sprintf((char *)buf, " ^ÉÉÉ Center"); break;
case 1: sprintf((char *)buf, " ^ÉÉ Right Front"); break;
case 0: sprintf((char *)buf, " ^É Left Front"); break;
}
[self PrintKeyVal:"" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
}
}
sprintf((char *)buf, " [self PrintKeyVal:"String index for first logical channel:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
if( !pAudioInTermDesc->descTermName )
{
sprintf((char *)buf, " }
else
{
sprintf((char *)buf, " }
[self PrintKeyVal:"Terminal Name String Index:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
break;
case ACS_OUTPUT_TERMINAL:
pAudioOutTermDesc = (AudioCtrlOutTermDescriptorPtr)desc;
//sprintf((char *)buf, "ACS_OUTPUT_TERMINAL" ); // AddStringChild(item, buf);
sprintf((char *)buf, " [self PrintKeyVal:"Terminal ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
// To get output terminal types refer to USB PDF files for Termt10.pdf p. 8.
switch ( Swap16(&pAudioOutTermDesc->descTermType) )
{
case 0x100: s="USB Undefined"; break;
case 0x101: s="USB Isochronous Stream"; break;
case 0x1ff: s="USB vendor specific"; break;
case 0x0300: s="Output Undefined"; break;
case 0x0301: s="Speaker"; break;
case 0x0302: s="Headphones"; break;
case 0x0303: s="Head Mounted Display Audio"; break;
case 0x0304: s="Desktop speaker"; break;
case 0x0305: s="Room speaker"; break;
case 0x0306: s="Communication speaker"; break;
case 0x0307: s="Low frequency effects speaker"; break;
case 0x400: s="Bi-directional Terminal, Undefined"; break;
case 0x401: s="Bi-directional Handset"; break;
case 0x402: s="Bi-directional Headset"; break;
case 0x403: s="Bi-directional Speakerphone (no echo reduction)"; break;
case 0x404: s="Bi-directional Speakerphone (echo supression)"; break;
case 0x405: s="Bi-directional Speakerphone (echo canceling)"; break;
case 0x500: s="Telephony Terminal, Undefined"; break;
case 0x501: s="Telephony Phoneline"; break;
case 0x502: s="Telephony Telephone"; break;
case 0x503: s="Telephony Down Line Phone"; break;
case 0x600: s="External Undefined"; break;
case 0x601: s="Analog connector"; break;
case 0x602: s="Digital audio connector"; break;
case 0x603: s="Line connector"; break;
case 0x604: s="Legacy audio connector"; break;
case 0x605: s="S/PDIF interface"; break;
case 0x606: s="1394 DA stream"; break;
case 0x607: s="1394 DV stream soundtrack"; break;
case 0x700: s="Embedded Terminal Undefined"; break;
case 0x701: s="Embedded Level Calibration Noise"; break;
case 0x702: s="Embedded Equalization Noise"; break;
case 0x704: s="Embedded Digital Audio Tape"; break;
case 0x705: s="Embedded Digital Compact Cassette"; break;
case 0x706: s="Embedded MiniDisk"; break;
case 0x707: s="Embedded Analog Tape"; break;
case 0x708: s="Phonograph"; break;
case 0x709: s="VCR Audio"; break;
case 0x70A: s="Video Disc Audio"; break;
case 0x70B: s="DVD Audio"; break;
case 0x70C: s="TV Tuner Audio"; break;
case 0x70D: s="Satellite Receiver Audio"; break;
case 0x70E: s="Cable Tuner Audio"; break;
case 0x70F: s="DSS Audio"; break;
case 0x710: s="Radio Receiver"; break;
case 0x711: s="Embedded AM/FM Radio Transmitter"; break;
case 0x712: s="Embedded Multi-track Recorder"; break;
case 0x713: s="Synthesizer"; break;
default: s="Invalid Output Terminal Type";
}
sprintf((char *)buf, "0x [self PrintKeyVal:"Output Terminal Type:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
if( !pAudioOutTermDesc->descInTermID )
{
sprintf((char *)buf, " }
else
{
sprintf((char *)buf, " }
[self PrintKeyVal:"InTerminal ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Source ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
if( !pAudioOutTermDesc->descTermName )
{
sprintf((char *)buf, " }
else
{
sprintf((char *)buf, " }
[self PrintKeyVal:"Terminal Name String Index:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
break;
case ACS_MIXER_UNIT:
pAudioMixerDesc = (AudioCtrlMixerDescriptorPtr)desc;
sprintf((char *)buf, "ACS_MIXER_UNIT" ); // AddStringChild(item, buf);
sprintf((char *)buf, " [self PrintKeyVal:"Unit ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Number of pins:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
// Add parsing for other pin IDs and channel configurations.
for( i=0; i < pAudioMixerDesc->descNumPins; i++ )
{
sprintf((char *)buf2, "Source ID Pin[ sprintf((char *)buf, " [self PrintKeyVal:buf2 val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
}
break;
case ACS_SELECTOR_UNIT:
pAudioSelectorDesc = (AudioCtrlSelectorDescriptorPtr)desc;
sprintf((char *)buf, "ACS_SELECTOR_UNIT" ); // AddStringChild(item, buf);
sprintf((char *)buf, " [self PrintKeyVal:"Unit ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Number of pins:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
// Add parsing for other pin IDs and channel configurations.
for( i=0; i < pAudioSelectorDesc->descNumPins; i++ )
{
sprintf((char *)buf2, "Source ID Pin[ sprintf((char *)buf, " [self PrintKeyVal:buf2 val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
}
break;
case ACS_FEATURE_UNIT:
pAudioFeatureDesc = (AudioCtrlFeatureDescriptorPtr)desc;
//sprintf((char *)buf, "ACS_FEATURE_UNIT" ); // AddStringChild(item, buf);
sprintf((char *)buf, " [self PrintKeyVal:"Unit ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Source ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Control Size:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
// The feature descriptor length equals len=7+(ch+1)*n from Audio Class
// Devices p. 43).
//
// Algebra:
// len - 7 = (ch + 1)*n
// (len-7)/n = ch + 1
// ((len-7)/n) - 1 = ch
//
// So, ch = ((len-7)/n) - 1;
//
n = pAudioFeatureDesc->descCtrlSize;
ch = ((pAudioFeatureDesc->descLen - 7)/n) - 1;
sprintf((char *)buf, " [self PrintKeyVal:"Number of Channels (ch):" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
p=&pAudioFeatureDesc->descControls[0];
for ( tempIndex = 0; tempIndex <= ch; tempIndex++ )
{
s = (char*)buf;
switch( tempIndex )
{
case 0: s += sprintf((char *)s, "Master Channel:......................... ( " ); break;
case 1: s += sprintf((char *)s, "Left Front:............................. ( " ); break;
case 2: s += sprintf((char *)s, "Right Front:............................ ( " ); break;
case 3: s += sprintf((char *)s, "Center Front:........................... ( " ); break;
case 4: s += sprintf((char *)s, "Low Frequency Enhancement:.............. ( " ); break;
case 5: s += sprintf((char *)s, "Left Surround:.......................... ( " ); break;
case 6: s += sprintf((char *)s, "Right Surround:......................... ( " ); break;
case 7: s += sprintf((char *)s, "Left of Center:......................... ( " ); break;
case 8: s += sprintf((char *)s, "Right of Center:........................ ( " ); break;
case 9: s += sprintf((char *)s, "Surround:............................... ( " ); break;
case 10: s += sprintf((char *)s, "Side Left:.............................. ( " ); break;
case 11: s += sprintf((char *)s, "Side Right:............................. ( " ); break;
case 12: s += sprintf((char *)s, "Side Left:.............................. ( " ); break;
default: s += sprintf((char *)s, "Unknown spatial relation:............... ( " ); break;
}
// The number of bytes for each field is indicated by descCtrlSize.
n = pAudioFeatureDesc->descCtrlSize;
switch( n )
{
case 2: // 10 attribute bits supported by Audio Class 1.0 specificationÉ
if ( p[1] & (~((1<<0)|(1<<1))) ) s += sprintf((char *)s, "Reserved, " ); // D15-D10
if ( p[1] & (1<<1) ) s += sprintf((char *)s, "Loudness, " ); // D9
if ( p[1] & (1<<0) ) s += sprintf((char *)s, "Bass Boost, " ); // D8
// FALL THROUGH!!!!!
case 1: // 10 attribute bits supported by Audio Class 1.0 specificationÉ
if ( p[0] & (1<<7) ) s += sprintf((char *)s, "Delay, " ); // D7
if ( p[0] & (1<<6) ) s += sprintf((char *)s, "Automatic Gain, " ); // D6
if ( p[0] & (1<<5) ) s += sprintf((char *)s, "Graphic Equalizer, " );// D5
if ( p[0] & (1<<4) ) s += sprintf((char *)s, "Treble, " ); // D4
if ( p[0] & (1<<3) ) s += sprintf((char *)s, "Midi, " ); // D3
if ( p[0] & (1<<2) ) s += sprintf((char *)s, "Bass, " ); // D2
if ( p[0] & (1<<1) ) s += sprintf((char *)s, "Volume, " ); // D1
if ( p[0] & (1<<0) ) s += sprintf((char *)s, "Mute, " ); // D0
break;
default:
sprintf((char *)s, "¥¥ UNDEFINED ATTRIBUTES ¥¥ )" );
break;
}
p += n;
//s--; // Get rid of extra space added in above sprintf's.
sprintf((char *)s, ")" );
// AddStringChild(item, buf);
// Note ¥¥¥¥ we need to add above to ouptput of prober ¥¥¥ (Nano 12/6/2002)
}
// p points to the next descriptor byte.
sprintf((char *)buf, " [self PrintKeyVal:"Feature Unit Name String Index:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
break;
case ACS_EXTENSION_UNIT:
pAudioExtDesc = (AudioCtrlExtDescriptorPtr)desc;
//sprintf((char *)buf, "ACS_EXTENSION_UNIT" ); // AddStringChild(item, buf);
sprintf((char *)buf, " [self PrintKeyVal:"Unit ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, "0x [self PrintKeyVal:"Vendor Ext. Code:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Number of Input Pins:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
// The feature descriptor length equals len=13+descNumPins+bControlSize
// from Audio Class Devices p. 56.
break;
case ACS_PROCESSING_UNIT:
pAudioProcDesc = (acProcessingDescriptorPtr)desc;
//sprintf((char *)buf, "ACS_PROCESSING_UNIT" ); // AddStringChild(item, buf);
sprintf((char *)buf, " [self PrintKeyVal:"Unit ID:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, "0x [self PrintKeyVal:"Process Type:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Number of Input Pins:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
for( srcIndex = 0, srcIdPtr = (UInt8*)&pAudioProcDesc->bNrPins; srcIndex < pAudioProcDesc->bNrPins; srcIndex++ )
{
sprintf((char *)buf2, "SourceID( sprintf((char *)buf, " [self PrintKeyVal:buf2 val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
}
pAudioProcContDesc = (acProcessingDescriptorContPtr)srcIdPtr;
sprintf((char *)buf, " [self PrintKeyVal:"Number of Channels:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, "0x [self PrintKeyVal:"Channel Configuration:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Channel Names:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Control Size:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, "0x [self PrintKeyVal:"Controls:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Process Unit Name:" val:buf forDevice:deviceNumber atDepth:depth+1 forNode:node];
break;
}
else if ( interfaceSubClass==0x02 /*AudioStreaming*/ )
switch ( ((GenericAudioDescriptorPtr)desc)->descSubType )
{
case ACS_ASTREAM_GENERAL:
sprintf((char *)buf, "Audio Stream General" );
[self PrintKeyVal:buf val:"" forDevice:deviceNumber atDepth:depth+1 forNode:node];
pAudioGeneralDesc = (CSAS_InterfaceDescriptorPtr)desc;
sprintf((char *)buf, " [self PrintKeyVal:"Endpoint Terminal ID:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
sprintf((char *)buf, " ( 0 == pAudioGeneralDesc->delay) ? "(Delay NOT SUPPORTED)":"");
[self PrintKeyVal:"Delay:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
i = Swap16(&pAudioGeneralDesc->formatTag);
switch (i)
{
case 0x0000:
s = "TYPE_I_UNDEFINED";
break;
case 0x0001:
//The PCM (Pulse Coded Modulation) format is the most commonly used
// audio format to represent audio data streams. The audio data is
// not compressed and uses a signed twoÕs-complement fixed point
// format. It is left-justified (the sign bit is the Msb) and data
// is padded with trailing zeros to fill the remaining unused bits
// of the subframe. The binary point is located to the right of the
// sign bit so that all values lie within the range [-1,+1).
s = "PCM";
break;
case 0x0002:
s = "PCM8";
break;
case 0x0003:
s = "IEEE_FLOAT";
break;
case 0x0004:
s = "ALAW";
break;
case 0x0005:
s = "MULAW";
break;
default:
s = "Unknown Format ID";
}
sprintf((char *)buf, "0x [self PrintKeyVal:"Format Tag:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
break;
case ACS_ASTREAM_TYPE:
sprintf((char *)buf, "Audio Stream Format Type Desc." );
[self PrintKeyVal:buf val:"" forDevice:deviceNumber atDepth:depth+1 forNode:node];
pAudioFormatTypeDesc = (CSAS_FormatTypeIDescPtr)desc;
sprintf((char *)buf, " [self PrintKeyVal:"Format Type:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Number Of Channels:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Sub Frame Size:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
sprintf((char *)buf, " [self PrintKeyVal:"Bit Resolution:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
sprintf((char *)buf, "0x (pAudioFormatTypeDesc->sampleFreqType ? "Discrete" : "Continuous") );
[self PrintKeyVal:"Sample Frequency Type:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
if (!pAudioFormatTypeDesc->sampleFreqType )
{
CSAS_Freq3Ptr b3;
UInt32 u;
b3 = &pAudioFormatTypeDesc->sampleFreqTables.cont.lowerSamFreq; // this is byte swapped!!!
u = (b3->byte1 << 0) | (b3->byte2 << 8) | (b3->byte3 << 16);
sprintf((char *)buf, " [self PrintKeyVal:"Lower Sample Freq:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
b3 = &pAudioFormatTypeDesc->sampleFreqTables.cont.upperSamFreq;
u = (b3->byte1 << 0) | (b3->byte2 << 8) | (b3->byte3 << 16);
sprintf((char *)buf, " [self PrintKeyVal:"Upper Sample Freq:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
}
else
{
CSAS_Freq3Ptr b4;
UInt32 u;
b4 = (CSAS_Freq3Ptr)&pAudioFormatTypeDesc->sampleFreqTables.discrete;
for( freqIndex = 0; freqIndex < pAudioFormatTypeDesc->sampleFreqType; freqIndex++ )
{
u = (b4[freqIndex].byte1 << 0) | (b4[freqIndex].byte2 << 8) | (b4[freqIndex].byte3 << 16);
sprintf((char *)buf, " [self PrintKeyVal:"Sample Frequency:" val:buf forDevice:deviceNumber atDepth:depth+2 forNode:node];
}
}
break;
default:
sprintf((char *)buf, "AudioStreaming Subclass" );
[self PrintKeyVal:buf val:"" forDevice:deviceNumber atDepth:depth+1 forNode:node];
}
else if ( interfaceSubClass==0x03 /*MIDIStreaming*/ )
switch ( ((GenericAudioDescriptorPtr)desc)->descSubType )
{
}
}
@end