1 #include <u.h>
2 #include <libc.h>
3 #include <thread.h>
4 #include "usb.h"
5 #include "audio.h"
6 #include "audioctl.h"
7
8 typedef struct Namelist Namelist;
9
10 struct Namelist
11 {
12 short index;
13 char *name;
14 };
15
16 Namelist terminal_types[] = {
17 { 0x100, "USB Terminal, undefined type"},
18 { 0x101, "USB Streaming"},
19 { 0x201, "Microphone"},
20 { 0x301, "Speaker"},
21 { 0x603, "Line connector"},
22 { 0x605, "S/PDIF"},
23 { 0, nil }
24 };
25
26 units[2][8]; /* rec and play units */
27 nunits[2]; /* number in use */
28
29 char *
namefor(Namelist * list,int item)30 namefor(Namelist *list, int item)
31 {
32 while(list->name){
33 if(list->index == item)
34 return list->name;
35 list++;
36 }
37 return "<unnamed>";
38 }
39
40 static int
findunit(int nr)41 findunit(int nr)
42 {
43 int rec, i;
44 for(rec = 0; rec < 2; rec++)
45 for(i = 0; i < nunits[rec]; i++)
46 if(units[rec][i] == nr)
47 return rec;
48 return -1;
49 }
50
51 void
audio_interface(Dev *,Desc * dd)52 audio_interface(Dev *, Desc *dd)
53 {
54 byte *b = (uchar*)&dd->data;
55 byte *bb = b;
56 int nb = dd->data.bLength;
57 int ctl, ch, u, x;
58 byte *p;
59 int class, subclass;
60 Audioalt *aa;
61 char *hd;
62
63 class = Class(dd->iface->csp);
64 subclass = Subclass(dd->iface->csp);
65
66 dprint(2, "%d.%d: ", class, subclass);
67 switch (subclass){
68 case 1: // control
69 switch (b[2]){
70 case 0x01:
71 dprint(2, "Class-Specific AC Interface Header Descriptor\n");
72 dprint(2, "\tAudioDevClass release (bcd)%c%c%c%c, "
73 "TotalLength %d, InCollection %d aInterfaceNr %d\n",
74 '0'+((b[4]>>4)&0xf), '0'+(b[4]&0xf),
75 '0'+((b[3]>>4)&0xf), '0'+(b[3]&0xf),
76 b[5]|(b[6]<<8), b[7], b[8]);
77 break;
78 case 0x02: // input
79 dprint(2, "Audio Input Terminal Descriptor\n");
80 dprint(2, "\tbTerminalId %d, wTerminalType "
81 "0x%x (%s), bAssocTerminal %d bNrChannels %d, "
82 "wChannelConfig %d, iChannelNames %d iTerminal %d\n",
83 b[3], b[4]|(b[5]<<8),
84 namefor(terminal_types, b[4]|(b[5]<<8)),
85 b[6], b[7], b[8]|(b[9]<<8), b[10], b[11]);
86 if((b[4]|b[5]<<8) == 0x101){
87 if(verbose)
88 fprint(2, "Audio output unit %d\n", b[3]);
89 /* USB streaming input: play interface */
90 units[Play][nunits[Play]++] = b[3];
91 }else{
92 if(verbose)
93 fprint(2, "Dev can record from %s\n",
94 namefor(terminal_types, b[4]|(b[5]<<8)));
95 /* Non-USB input: record interface */
96 units[Record][nunits[Record]++] = b[3];
97 }
98 break;
99 case 0x03: // output
100 if(usbdebug){
101 fprint(2, "Audio Output Terminal Descriptor\n");
102 fprint(2, "\tbTerminalId %d, wTerminalType 0x%x (%s), bAssocTerminal %d bSourceId %d, iTerminal %d\n",
103 b[3], b[4]|(b[5]<<8),
104 namefor(terminal_types, b[4]|(b[5]<<8)),
105 b[6], b[7], b[8]);
106 }
107 if((b[4]|b[5]<<8) == 0x101){
108 if(verbose)
109 fprint(2, "Audio input unit %d\n", b[3]);
110 /* USB streaming output: record interface */
111 units[Record][nunits[Record]++] = b[3];
112 if(verbose)
113 fprint(2, "Dev can play to %s\n",
114 namefor(terminal_types, b[4]|(b[5]<<8)));
115 /* Non-USB output: play interface */
116 units[Play][nunits[Play]++] = b[3];
117 }
118 break;
119 case 0x04:
120 if(verbose)
121 fprint(2, "Audio Mixer Unit %d\n", b[3]);
122 if(usbdebug){
123 fprint(2, "\t%d bytes:", nb);
124 for(ctl = 0; ctl < nb; ctl++)
125 fprint(2, " 0x%2.2x", b[ctl]);
126 fprint(2, "\n\tbUnitId %d, bNrInPins %d", b[3], b[4]);
127 }
128 if(b[4]){
129 dprint(2, ", baSourceIDs: [%d", b[5]);
130 u = findunit(b[5]);
131 for(ctl = 1; ctl < b[4]; ctl++){
132 if(u < 0)
133 u = findunit(b[5+ctl]);
134 else if((x = findunit(b[5+ctl])) >= 0 && u != x && verbose)
135 fprint(2, "\tMixer %d for I & O \n", b[3]);
136 dprint(2, ", %d", b[5+ctl]);
137 }
138 dprint(2, "]\n");
139 if(u >= 0){
140 units[u][nunits[u]++] = b[3];
141 if(mixerid[u] >= 0)
142 fprint(2, "Second mixer (%d, %d) on %s\n",
143 mixerid[u], b[3], u?"record":"playback");
144 mixerid[u] = b[3];
145 }
146 if(usbdebug){
147 fprint(2, "Channels %d, config %d, ",
148 b[ctl+5], b[ctl+5+1] | b[ctl+5+2] << 8);
149 x = b[ctl+5] * b[4];
150 fprint(2, "programmable: %d bits, 0x", x);
151 x = (x + 7) >> 3;
152 while(x--)
153 fprint(2, "%2.2x", b[ctl+x+5+4]);
154 }
155 }
156 break;
157 case 0x05:
158 if(verbose)
159 fprint(2, "Audio Selector Unit %d\n", b[3]);
160 dprint(2, "\tbUnitId %d, bNrInPins %d", b[3], b[4]);
161 if(b[4]){
162 u = findunit(b[5]);
163 dprint(2, ", baSourceIDs: %s [%d",
164 u?"record":"playback", b[5]);
165 for(ctl = 1; ctl < b[4]; ctl++){
166 if(u < 0)
167 u = findunit(b[5+ctl]);
168 else if((x = findunit(b[5+ctl])) >= 0 &&
169 u != x && verbose)
170 fprint(2, "\tSelector %d for I & O\n", b[3]);
171 dprint(2, ", %d", b[5+ctl]);
172 }
173 dprint(2, "]\n");
174 if(u >= 0){
175 units[u][nunits[u]++] = b[3];
176 if(selectorid[u] >= 0)
177 fprint(2, "Second selector (%d, %d) on %s\n", selectorid[u], b[3], u?"record":"playback");
178 selectorid[u] = b[3];
179 controls[u][Selector_control].readable = 1;
180 controls[u][Selector_control].settable = 1;
181 controls[u][Selector_control].chans = 0;
182 }
183 }
184 break;
185 case 0x06: // feature
186 if(verbose) fprint(2, "Audio Feature Unit %d", b[3]);
187 dprint(2, "\tbUnitId %d, bSourceId %d, bControlSize %d\n",
188 b[3], b[4], b[5]);
189 u = findunit(b[4]);
190 if(u >= 0){
191 if(verbose) fprint(2, " for %s\n", u?"Record":"Playback");
192 units[u][nunits[u]++] = b[3];
193 if(featureid[u] >= 0)
194 if(verbose)
195 fprint(2, "Second feature unit (%d, %d)"
196 " on %s\n", featureid[u], b[3],
197 u?"record":"playback");
198 featureid[u] = b[3];
199 }else
200 if(verbose) fprint(2, ", not known what for\n");
201 p = b + 6;
202 for(ctl = 1; ctl < 0x0b; ctl++)
203 if((1<<(ctl-1)) & (b[6] | ((b[5]>1)?(b[7]<<8):0))){
204 if(verbose)
205 fprint(2, "\t%s control on master channel\n",
206 controls[0][ctl].name);
207 if(u >= 0){
208 controls[u][ctl].readable = 1;
209 controls[u][ctl].settable = 1;
210 controls[u][ctl].chans = 0;
211 }
212 }
213 p += (b[5]>1)?2:1;
214 for(ch = 0; ch < (nb - 8)/b[5]; ch++){
215 for(ctl = 1; ctl < 0x0b; ctl++)
216 if((1<<(ctl-1)) & (p[0] | ((b[5]>1)?(p[1]<<8):0))){
217 if(verbose)
218 fprint(2, "\t%s control on channel %d\n",
219 controls[0][ctl].name, ch+1);
220 if(u >= 0){
221 controls[u][ctl].readable = 1;
222 controls[u][ctl].settable = 1;
223 controls[u][ctl].chans |= 1 <<(ch+1);
224 }
225 }
226 p += (b[5]>1)?2:1;
227 }
228 break;
229 default:
230 hd = hexstr(bb, nb);
231 fprint(2, "audio control unknown: %s\n", hd);
232 free(hd);
233 }
234 break;
235 case 2: // stream
236 switch (b[2]){
237 case 0x01:
238 dprint(2, "Audio stream for TerminalID %d, delay %d, format_tag %#ux\n",
239 b[3], b[4], b[5] | (b[6]<<8));
240 break;
241 case 0x02:
242 aa = (Audioalt *)dd->altc->aux;
243 if(aa == nil){
244 aa = mallocz(sizeof(Audioalt), 1);
245 dd->altc->aux = aa;
246 }
247 if(verbose){
248 if(b[4] <= 2)
249 fprint(2, "Interface %d: %s, %d bits, ",
250 dd->iface->id, (b[4] == 1)?"mono":"stereo", b[6]);
251 else
252 fprint(2, "Interface %d, %d channels, %d bits, ",
253 dd->iface->id, b[4], b[6]);
254 }
255 if(b[7] == 0){
256 if(verbose)
257 fprint(2, "frequency variable between %d and %d\n",
258 b[8] | b[9]<<8 | b[10]<<16, b[11] | b[12]<<8 | b[13]<<16);
259 aa->minfreq = b[8] | b[9]<<8 | b[10]<<16;
260 aa->maxfreq = b[11] | b[12]<<8 | b[13]<<16;
261 aa->caps |= has_contfreq;
262 }else{
263 if(verbose)
264 fprint(2, "discrete frequencies are:");
265 for(ch = 0; ch < b[7] && ch < 8; ch++){
266 aa->freqs[ch] = b[8+3*ch] | b[9+3*ch]<<8 | b[10+3*ch]<<16;
267 if(verbose)
268 fprint(2, " %d", b[8+3*ch] | b[9+3*ch]<<8 | b[10+3*ch]<<16);
269 }
270 if(ch < 8)
271 aa->freqs[ch] = -1;
272 if(verbose)
273 fprint(2, "\n");
274 if(ch > 1)
275 aa->caps |= has_discfreq; /* more than one frequency */
276 else
277 aa->caps |= onefreq; /* only one frequency */
278 }
279 aa->nchan = b[4];
280 aa->res = b[6];
281 aa->subframesize = b[5];
282 break;
283 default:
284 if(usbdebug){
285 hd = hexstr(bb, nb);
286 fprint(2, "audio stream unknown: %s\n", hd);
287 free(hd);
288 }
289 }
290 break;
291 case 3: // midi
292 default:
293 if(usbdebug){
294 hd = hexstr(bb, nb);
295 fprint(2, "Unknown audio stream type: CS_INTERFACE: %s\n", hd);
296 free(hd);
297 }
298 }
299 }
300
301