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WebSVN – planix.SVN – Blame – /os/branches/planix-v0/sys/src/cmd/usb/audio/audiosub.c – Rev 2

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#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 *
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
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
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