Rev 2 | Blame | Compare with Previous | Last modification | View Log | RSS feed
#include <u.h>
#include <libc.h>
#include <thread.h>
#include "usb.h"
#include "audio.h"
#include "audioctl.h"
typedef struct Namelist Namelist;
struct Namelist
{
short index;
char *name;
};
Namelist terminal_types[] = {
{ 0x100, "USB Terminal, undefined type"},
{ 0x101, "USB Streaming"},
{ 0x201, "Microphone"},
{ 0x301, "Speaker"},
{ 0x603, "Line connector"},
{ 0x605, "S/PDIF"},
{ 0, nil }
};
units[2][8]; /* rec and play units */
nunits[2]; /* number in use */
char *
namefor(Namelist *list, int item)
{
while(list->name){
if(list->index == item)
return list->name;
list++;
}
return "<unnamed>";
}
static int
findunit(int nr)
{
int rec, i;
for(rec = 0; rec < 2; rec++)
for(i = 0; i < nunits[rec]; i++)
if(units[rec][i] == nr)
return rec;
return -1;
}
void
audio_interface(Dev *, Desc *dd)
{
byte *b = (uchar*)&dd->data;
byte *bb = b;
int nb = dd->data.bLength;
int ctl, ch, u, x;
byte *p;
int class, subclass;
Audioalt *aa;
char *hd;
class = Class(dd->iface->csp);
subclass = Subclass(dd->iface->csp);
dprint(2, "%d.%d: ", class, subclass);
switch (subclass){
case 1: // control
switch (b[2]){
case 0x01:
dprint(2, "Class-Specific AC Interface Header Descriptor\n");
dprint(2, "\tAudioDevClass release (bcd)%c%c%c%c, "
"TotalLength %d, InCollection %d aInterfaceNr %d\n",
'0'+((b[4]>>4)&0xf), '0'+(b[4]&0xf),
'0'+((b[3]>>4)&0xf), '0'+(b[3]&0xf),
b[5]|(b[6]<<8), b[7], b[8]);
break;
case 0x02: // input
dprint(2, "Audio Input Terminal Descriptor\n");
dprint(2, "\tbTerminalId %d, wTerminalType "
"0x%x (%s), bAssocTerminal %d bNrChannels %d, "
"wChannelConfig %d, iChannelNames %d iTerminal %d\n",
b[3], b[4]|(b[5]<<8),
namefor(terminal_types, b[4]|(b[5]<<8)),
b[6], b[7], b[8]|(b[9]<<8), b[10], b[11]);
if((b[4]|b[5]<<8) == 0x101){
if(verbose)
fprint(2, "Audio output unit %d\n", b[3]);
/* USB streaming input: play interface */
units[Play][nunits[Play]++] = b[3];
}else{
if(verbose)
fprint(2, "Dev can record from %s\n",
namefor(terminal_types, b[4]|(b[5]<<8)));
/* Non-USB input: record interface */
units[Record][nunits[Record]++] = b[3];
}
break;
case 0x03: // output
if(usbdebug){
fprint(2, "Audio Output Terminal Descriptor\n");
fprint(2, "\tbTerminalId %d, wTerminalType 0x%x (%s), bAssocTerminal %d bSourceId %d, iTerminal %d\n",
b[3], b[4]|(b[5]<<8),
namefor(terminal_types, b[4]|(b[5]<<8)),
b[6], b[7], b[8]);
}
if((b[4]|b[5]<<8) == 0x101){
if(verbose)
fprint(2, "Audio input unit %d\n", b[3]);
/* USB streaming output: record interface */
units[Record][nunits[Record]++] = b[3];
if(verbose)
fprint(2, "Dev can play to %s\n",
namefor(terminal_types, b[4]|(b[5]<<8)));
/* Non-USB output: play interface */
units[Play][nunits[Play]++] = b[3];
}
break;
case 0x04:
if(verbose)
fprint(2, "Audio Mixer Unit %d\n", b[3]);
if(usbdebug){
fprint(2, "\t%d bytes:", nb);
for(ctl = 0; ctl < nb; ctl++)
fprint(2, " 0x%2.2x", b[ctl]);
fprint(2, "\n\tbUnitId %d, bNrInPins %d", b[3], b[4]);
}
if(b[4]){
dprint(2, ", baSourceIDs: [%d", b[5]);
u = findunit(b[5]);
for(ctl = 1; ctl < b[4]; ctl++){
if(u < 0)
u = findunit(b[5+ctl]);
else if((x = findunit(b[5+ctl])) >= 0 && u != x && verbose)
fprint(2, "\tMixer %d for I & O \n", b[3]);
dprint(2, ", %d", b[5+ctl]);
}
dprint(2, "]\n");
if(u >= 0){
units[u][nunits[u]++] = b[3];
if(mixerid[u] >= 0)
fprint(2, "Second mixer (%d, %d) on %s\n",
mixerid[u], b[3], u?"record":"playback");
mixerid[u] = b[3];
}
if(usbdebug){
fprint(2, "Channels %d, config %d, ",
b[ctl+5], b[ctl+5+1] | b[ctl+5+2] << 8);
x = b[ctl+5] * b[4];
fprint(2, "programmable: %d bits, 0x", x);
x = (x + 7) >> 3;
while(x--)
fprint(2, "%2.2x", b[ctl+x+5+4]);
}
}
break;
case 0x05:
if(verbose)
fprint(2, "Audio Selector Unit %d\n", b[3]);
dprint(2, "\tbUnitId %d, bNrInPins %d", b[3], b[4]);
if(b[4]){
u = findunit(b[5]);
dprint(2, ", baSourceIDs: %s [%d",
u?"record":"playback", b[5]);
for(ctl = 1; ctl < b[4]; ctl++){
if(u < 0)
u = findunit(b[5+ctl]);
else if((x = findunit(b[5+ctl])) >= 0 &&
u != x && verbose)
fprint(2, "\tSelector %d for I & O\n", b[3]);
dprint(2, ", %d", b[5+ctl]);
}
dprint(2, "]\n");
if(u >= 0){
units[u][nunits[u]++] = b[3];
if(selectorid[u] >= 0)
fprint(2, "Second selector (%d, %d) on %s\n", selectorid[u], b[3], u?"record":"playback");
selectorid[u] = b[3];
controls[u][Selector_control].readable = 1;
controls[u][Selector_control].settable = 1;
controls[u][Selector_control].chans = 0;
}
}
break;
case 0x06: // feature
if(verbose) fprint(2, "Audio Feature Unit %d", b[3]);
dprint(2, "\tbUnitId %d, bSourceId %d, bControlSize %d\n",
b[3], b[4], b[5]);
u = findunit(b[4]);
if(u >= 0){
if(verbose) fprint(2, " for %s\n", u?"Record":"Playback");
units[u][nunits[u]++] = b[3];
if(featureid[u] >= 0)
if(verbose)
fprint(2, "Second feature unit (%d, %d)"
" on %s\n", featureid[u], b[3],
u?"record":"playback");
featureid[u] = b[3];
}else
if(verbose) fprint(2, ", not known what for\n");
p = b + 6;
for(ctl = 1; ctl < 0x0b; ctl++)
if((1<<(ctl-1)) & (b[6] | ((b[5]>1)?(b[7]<<8):0))){
if(verbose)
fprint(2, "\t%s control on master channel\n",
controls[0][ctl].name);
if(u >= 0){
controls[u][ctl].readable = 1;
controls[u][ctl].settable = 1;
controls[u][ctl].chans = 0;
}
}
p += (b[5]>1)?2:1;
for(ch = 0; ch < (nb - 8)/b[5]; ch++){
for(ctl = 1; ctl < 0x0b; ctl++)
if((1<<(ctl-1)) & (p[0] | ((b[5]>1)?(p[1]<<8):0))){
if(verbose)
fprint(2, "\t%s control on channel %d\n",
controls[0][ctl].name, ch+1);
if(u >= 0){
controls[u][ctl].readable = 1;
controls[u][ctl].settable = 1;
controls[u][ctl].chans |= 1 <<(ch+1);
}
}
p += (b[5]>1)?2:1;
}
break;
default:
hd = hexstr(bb, nb);
fprint(2, "audio control unknown: %s\n", hd);
free(hd);
}
break;
case 2: // stream
switch (b[2]){
case 0x01:
dprint(2, "Audio stream for TerminalID %d, delay %d, format_tag %#ux\n",
b[3], b[4], b[5] | (b[6]<<8));
break;
case 0x02:
aa = (Audioalt *)dd->altc->aux;
if(aa == nil){
aa = mallocz(sizeof(Audioalt), 1);
dd->altc->aux = aa;
}
if(verbose){
if(b[4] <= 2)
fprint(2, "Interface %d: %s, %d bits, ",
dd->iface->id, (b[4] == 1)?"mono":"stereo", b[6]);
else
fprint(2, "Interface %d, %d channels, %d bits, ",
dd->iface->id, b[4], b[6]);
}
if(b[7] == 0){
if(verbose)
fprint(2, "frequency variable between %d and %d\n",
b[8] | b[9]<<8 | b[10]<<16, b[11] | b[12]<<8 | b[13]<<16);
aa->minfreq = b[8] | b[9]<<8 | b[10]<<16;
aa->maxfreq = b[11] | b[12]<<8 | b[13]<<16;
aa->caps |= has_contfreq;
}else{
if(verbose)
fprint(2, "discrete frequencies are:");
for(ch = 0; ch < b[7] && ch < 8; ch++){
aa->freqs[ch] = b[8+3*ch] | b[9+3*ch]<<8 | b[10+3*ch]<<16;
if(verbose)
fprint(2, " %d", b[8+3*ch] | b[9+3*ch]<<8 | b[10+3*ch]<<16);
}
if(ch < 8)
aa->freqs[ch] = -1;
if(verbose)
fprint(2, "\n");
if(ch > 1)
aa->caps |= has_discfreq; /* more than one frequency */
else
aa->caps |= onefreq; /* only one frequency */
}
aa->nchan = b[4];
aa->res = b[6];
aa->subframesize = b[5];
break;
default:
if(usbdebug){
hd = hexstr(bb, nb);
fprint(2, "audio stream unknown: %s\n", hd);
free(hd);
}
}
break;
case 3: // midi
default:
if(usbdebug){
hd = hexstr(bb, nb);
fprint(2, "Unknown audio stream type: CS_INTERFACE: %s\n", hd);
free(hd);
}
}
}