1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 1993-2001 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include <stdlib.h>
30*0Sstevel@tonic-gate #include <stdio.h>
31*0Sstevel@tonic-gate #include <string.h>
32*0Sstevel@tonic-gate #include <ctype.h>
33*0Sstevel@tonic-gate #include <math.h>
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #include <Audio.h>
36*0Sstevel@tonic-gate #include <AudioHdr.h>
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate #include <parse.h>
39*0Sstevel@tonic-gate #include <convert.h>
40*0Sstevel@tonic-gate
41*0Sstevel@tonic-gate static struct keyword_table Keywords[] = {
42*0Sstevel@tonic-gate (char *)"encoding", K_ENCODING,
43*0Sstevel@tonic-gate (char *)"rate", K_RATE,
44*0Sstevel@tonic-gate (char *)"channels", K_CHANNELS,
45*0Sstevel@tonic-gate (char *)"offset", K_OFFSET,
46*0Sstevel@tonic-gate (char *)"format", K_FORMAT,
47*0Sstevel@tonic-gate NULL, K_NULL,
48*0Sstevel@tonic-gate };
49*0Sstevel@tonic-gate
50*0Sstevel@tonic-gate // Lookup the string in a keyword table. return the token associated with it.
51*0Sstevel@tonic-gate keyword_type
do_lookup(char * s,struct keyword_table * kp)52*0Sstevel@tonic-gate do_lookup(
53*0Sstevel@tonic-gate char *s,
54*0Sstevel@tonic-gate struct keyword_table *kp)
55*0Sstevel@tonic-gate {
56*0Sstevel@tonic-gate struct keyword_table *tkp = NULL;
57*0Sstevel@tonic-gate
58*0Sstevel@tonic-gate for (; kp && kp->name; kp++) {
59*0Sstevel@tonic-gate if (strncmp(s, kp->name, strlen(s)) == 0) {
60*0Sstevel@tonic-gate // check if exact match
61*0Sstevel@tonic-gate if (strlen(s) == strlen(kp->name)) {
62*0Sstevel@tonic-gate return (kp->type);
63*0Sstevel@tonic-gate } else {
64*0Sstevel@tonic-gate // already have another partial match, so
65*0Sstevel@tonic-gate // it's ambiguous
66*0Sstevel@tonic-gate if (tkp) {
67*0Sstevel@tonic-gate return (K_AMBIG);
68*0Sstevel@tonic-gate } else {
69*0Sstevel@tonic-gate tkp = kp;
70*0Sstevel@tonic-gate }
71*0Sstevel@tonic-gate }
72*0Sstevel@tonic-gate }
73*0Sstevel@tonic-gate }
74*0Sstevel@tonic-gate
75*0Sstevel@tonic-gate // at end of list. if there was a partial match, return it, if
76*0Sstevel@tonic-gate // not, there's no match....
77*0Sstevel@tonic-gate if (tkp) {
78*0Sstevel@tonic-gate return (tkp->type);
79*0Sstevel@tonic-gate } else {
80*0Sstevel@tonic-gate return (K_NULL);
81*0Sstevel@tonic-gate }
82*0Sstevel@tonic-gate }
83*0Sstevel@tonic-gate
84*0Sstevel@tonic-gate // Parse a file format specification
85*0Sstevel@tonic-gate int
fileformat_parse(char * val,format_type & format)86*0Sstevel@tonic-gate fileformat_parse(
87*0Sstevel@tonic-gate char *val,
88*0Sstevel@tonic-gate format_type& format)
89*0Sstevel@tonic-gate {
90*0Sstevel@tonic-gate // XXX - other formats later ...
91*0Sstevel@tonic-gate if (strcasecmp(val, "sun") == 0) {
92*0Sstevel@tonic-gate format = F_SUN;
93*0Sstevel@tonic-gate } else if (strcasecmp(val, "raw") == 0) {
94*0Sstevel@tonic-gate format = F_RAW;
95*0Sstevel@tonic-gate } else if (strcasecmp(val, "aiff") == 0) {
96*0Sstevel@tonic-gate Err(MGET("AIFF not yet supported\n"));
97*0Sstevel@tonic-gate return (-1);
98*0Sstevel@tonic-gate } else {
99*0Sstevel@tonic-gate return (-1);
100*0Sstevel@tonic-gate }
101*0Sstevel@tonic-gate return (0);
102*0Sstevel@tonic-gate }
103*0Sstevel@tonic-gate
104*0Sstevel@tonic-gate // Parse an audio format keyword
105*0Sstevel@tonic-gate int
audioformat_parse(char * val,AudioHdr & hdr)106*0Sstevel@tonic-gate audioformat_parse(
107*0Sstevel@tonic-gate char *val,
108*0Sstevel@tonic-gate AudioHdr& hdr)
109*0Sstevel@tonic-gate {
110*0Sstevel@tonic-gate // check if it's "cd" or "dat" or "voice".
111*0Sstevel@tonic-gate // these set the precision and encoding, etc.
112*0Sstevel@tonic-gate if (strcasecmp(val, "dat") == 0) {
113*0Sstevel@tonic-gate hdr.sample_rate = 48000;
114*0Sstevel@tonic-gate hdr.channels = 2;
115*0Sstevel@tonic-gate hdr.encoding = LINEAR;
116*0Sstevel@tonic-gate hdr.samples_per_unit = 1;
117*0Sstevel@tonic-gate hdr.bytes_per_unit = 2;
118*0Sstevel@tonic-gate } else if (strcasecmp(val, "cd") == 0) {
119*0Sstevel@tonic-gate hdr.sample_rate = 44100;
120*0Sstevel@tonic-gate hdr.channels = 2;
121*0Sstevel@tonic-gate hdr.encoding = LINEAR;
122*0Sstevel@tonic-gate hdr.samples_per_unit = 1;
123*0Sstevel@tonic-gate hdr.bytes_per_unit = 2;
124*0Sstevel@tonic-gate } else if (strcasecmp(val, "voice") == 0) {
125*0Sstevel@tonic-gate hdr.sample_rate = 8000;
126*0Sstevel@tonic-gate hdr.channels = 1;
127*0Sstevel@tonic-gate hdr.encoding = ULAW;
128*0Sstevel@tonic-gate hdr.samples_per_unit = 1;
129*0Sstevel@tonic-gate hdr.bytes_per_unit = 1;
130*0Sstevel@tonic-gate } else {
131*0Sstevel@tonic-gate return (-1);
132*0Sstevel@tonic-gate }
133*0Sstevel@tonic-gate return (0);
134*0Sstevel@tonic-gate }
135*0Sstevel@tonic-gate
136*0Sstevel@tonic-gate // Parse a format spec and return an audio header that describes it.
137*0Sstevel@tonic-gate // Format is in the form of: [keyword=]value[,[keyword=]value ...].
138*0Sstevel@tonic-gate int
parse_format(char * s,AudioHdr & hdr,format_type & format,off_t & offset)139*0Sstevel@tonic-gate parse_format(
140*0Sstevel@tonic-gate char *s,
141*0Sstevel@tonic-gate AudioHdr& hdr,
142*0Sstevel@tonic-gate format_type& format,
143*0Sstevel@tonic-gate off_t& offset)
144*0Sstevel@tonic-gate {
145*0Sstevel@tonic-gate char *cp;
146*0Sstevel@tonic-gate char *buf;
147*0Sstevel@tonic-gate char *key;
148*0Sstevel@tonic-gate char *val;
149*0Sstevel@tonic-gate char *cp2;
150*0Sstevel@tonic-gate
151*0Sstevel@tonic-gate offset = 0;
152*0Sstevel@tonic-gate format = F_SUN;
153*0Sstevel@tonic-gate
154*0Sstevel@tonic-gate // if no string provided, just return ...
155*0Sstevel@tonic-gate if (!(s && *s))
156*0Sstevel@tonic-gate return (0);
157*0Sstevel@tonic-gate
158*0Sstevel@tonic-gate // First off, try to parse it as a full format string
159*0Sstevel@tonic-gate // (it would have to have been quoted).
160*0Sstevel@tonic-gate // If this works, we're done.
161*0Sstevel@tonic-gate if (hdr.FormatParse(s) == AUDIO_SUCCESS) {
162*0Sstevel@tonic-gate return (0);
163*0Sstevel@tonic-gate }
164*0Sstevel@tonic-gate
165*0Sstevel@tonic-gate buf = strdup(s); // save a copy of the string
166*0Sstevel@tonic-gate
167*0Sstevel@tonic-gate // XXX - bug alert: if someone has info="xxx,yyy", strtok will
168*0Sstevel@tonic-gate // break unless we snarf properly snarf the info. punt for now,
169*0Sstevel@tonic-gate // fix later (since no info supported yet)....
170*0Sstevel@tonic-gate
171*0Sstevel@tonic-gate for (cp = strtok(buf, ","); cp; cp = strtok(NULL, ",")) {
172*0Sstevel@tonic-gate // Check if there's a '='
173*0Sstevel@tonic-gate // If so, left side is keyword, right side is value.
174*0Sstevel@tonic-gate // If not, entire string is value.
175*0Sstevel@tonic-gate if (cp2 = strchr(cp, '=')) {
176*0Sstevel@tonic-gate *cp2++ = NULL;
177*0Sstevel@tonic-gate key = cp;
178*0Sstevel@tonic-gate val = cp2;
179*0Sstevel@tonic-gate
180*0Sstevel@tonic-gate // Look for the keyword
181*0Sstevel@tonic-gate switch (do_lookup(key, Keywords)) {
182*0Sstevel@tonic-gate case K_ENCODING:
183*0Sstevel@tonic-gate if (hdr.EncodingParse(val)) {
184*0Sstevel@tonic-gate Err(MGET(
185*0Sstevel@tonic-gate "invalid encoding option: %s\n"),
186*0Sstevel@tonic-gate val);
187*0Sstevel@tonic-gate goto parse_error;
188*0Sstevel@tonic-gate }
189*0Sstevel@tonic-gate break;
190*0Sstevel@tonic-gate case K_RATE:
191*0Sstevel@tonic-gate if (hdr.RateParse(val)) {
192*0Sstevel@tonic-gate Err(MGET("invalid sample rate: %s\n"),
193*0Sstevel@tonic-gate val);
194*0Sstevel@tonic-gate goto parse_error;
195*0Sstevel@tonic-gate }
196*0Sstevel@tonic-gate break;
197*0Sstevel@tonic-gate case K_CHANNELS:
198*0Sstevel@tonic-gate if (hdr.ChannelParse(val)) {
199*0Sstevel@tonic-gate Err(MGET(
200*0Sstevel@tonic-gate "invalid channels option: %s\n"),
201*0Sstevel@tonic-gate val);
202*0Sstevel@tonic-gate goto parse_error;
203*0Sstevel@tonic-gate }
204*0Sstevel@tonic-gate break;
205*0Sstevel@tonic-gate case K_FORMAT:
206*0Sstevel@tonic-gate if (fileformat_parse(val, format) < 0) {
207*0Sstevel@tonic-gate Err(MGET("unknown format: %s\n"), val);
208*0Sstevel@tonic-gate goto parse_error;
209*0Sstevel@tonic-gate }
210*0Sstevel@tonic-gate break;
211*0Sstevel@tonic-gate case K_OFFSET:
212*0Sstevel@tonic-gate offset = (off_t)atoi(val);
213*0Sstevel@tonic-gate break;
214*0Sstevel@tonic-gate case K_AMBIG:
215*0Sstevel@tonic-gate Err(MGET("ambiguous keyword: %s\n"), key);
216*0Sstevel@tonic-gate goto parse_error;
217*0Sstevel@tonic-gate case K_NULL:
218*0Sstevel@tonic-gate Err(MGET("null keyword: =%s\n"), val);
219*0Sstevel@tonic-gate goto parse_error;
220*0Sstevel@tonic-gate default:
221*0Sstevel@tonic-gate Err(MGET("invalid keyword: %s\n"), key);
222*0Sstevel@tonic-gate goto parse_error;
223*0Sstevel@tonic-gate }
224*0Sstevel@tonic-gate } else {
225*0Sstevel@tonic-gate // No keyword, so try to intuit the value
226*0Sstevel@tonic-gate // First try encoding, audio, and file format.
227*0Sstevel@tonic-gate // If they fail, try sample rate and channels.
228*0Sstevel@tonic-gate val = cp;
229*0Sstevel@tonic-gate if (hdr.EncodingParse(val) &&
230*0Sstevel@tonic-gate (audioformat_parse(val, hdr) < 0) &&
231*0Sstevel@tonic-gate (fileformat_parse(val, format) < 0)) {
232*0Sstevel@tonic-gate // If this looks like sample rate, make sure
233*0Sstevel@tonic-gate // it is not ambiguous with channels
234*0Sstevel@tonic-gate if (!hdr.RateParse(val)) {
235*0Sstevel@tonic-gate if (hdr.sample_rate < 1000) {
236*0Sstevel@tonic-gate int x;
237*0Sstevel@tonic-gate char y[10];
238*0Sstevel@tonic-gate
239*0Sstevel@tonic-gate if (sscanf(val, " %lf %9s",
240*0Sstevel@tonic-gate &x, y) != 1) {
241*0Sstevel@tonic-gate Err(
242*0Sstevel@tonic-gate MGET("ambiguous numeric option: %s\n"),
243*0Sstevel@tonic-gate val);
244*0Sstevel@tonic-gate goto parse_error;
245*0Sstevel@tonic-gate }
246*0Sstevel@tonic-gate }
247*0Sstevel@tonic-gate } else if (hdr.ChannelParse(val)) {
248*0Sstevel@tonic-gate Err(MGET("invalid option value: %s\n"),
249*0Sstevel@tonic-gate val);
250*0Sstevel@tonic-gate goto parse_error;
251*0Sstevel@tonic-gate }
252*0Sstevel@tonic-gate }
253*0Sstevel@tonic-gate }
254*0Sstevel@tonic-gate }
255*0Sstevel@tonic-gate free(buf);
256*0Sstevel@tonic-gate return (0);
257*0Sstevel@tonic-gate
258*0Sstevel@tonic-gate parse_error:
259*0Sstevel@tonic-gate free(buf);
260*0Sstevel@tonic-gate return (-1);
261*0Sstevel@tonic-gate }
262