1 /* $NetBSD: h_pad.c,v 1.3 2019/06/20 12:14:46 isaki Exp $ */
2
3 /*
4 * Copyright (c) 2010 Antti Kantee. All Rights Reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/types.h>
29
30 #include <rump/rump.h>
31 #include <rump/rump_syscalls.h>
32
33 #include <err.h>
34 #include <fcntl.h>
35 #include <stdbool.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <unistd.h>
40 #include <sys/audioio.h>
41
42 #include "h_pad_musa.c"
43
44 /*
45 * Stuff some audio into /dev/audio, read it from /dev/pad.
46 */
47
48 #define BUFSIZE 1024
49
50 static const int16_t mulaw_to_slinear16[256] = {
51 0x8284, 0x8684, 0x8a84, 0x8e84, 0x9284, 0x9684, 0x9a84, 0x9e84,
52 0xa284, 0xa684, 0xaa84, 0xae84, 0xb284, 0xb684, 0xba84, 0xbe84,
53 0xc184, 0xc384, 0xc584, 0xc784, 0xc984, 0xcb84, 0xcd84, 0xcf84,
54 0xd184, 0xd384, 0xd584, 0xd784, 0xd984, 0xdb84, 0xdd84, 0xdf84,
55 0xe104, 0xe204, 0xe304, 0xe404, 0xe504, 0xe604, 0xe704, 0xe804,
56 0xe904, 0xea04, 0xeb04, 0xec04, 0xed04, 0xee04, 0xef04, 0xf004,
57 0xf0c4, 0xf144, 0xf1c4, 0xf244, 0xf2c4, 0xf344, 0xf3c4, 0xf444,
58 0xf4c4, 0xf544, 0xf5c4, 0xf644, 0xf6c4, 0xf744, 0xf7c4, 0xf844,
59 0xf8a4, 0xf8e4, 0xf924, 0xf964, 0xf9a4, 0xf9e4, 0xfa24, 0xfa64,
60 0xfaa4, 0xfae4, 0xfb24, 0xfb64, 0xfba4, 0xfbe4, 0xfc24, 0xfc64,
61 0xfc94, 0xfcb4, 0xfcd4, 0xfcf4, 0xfd14, 0xfd34, 0xfd54, 0xfd74,
62 0xfd94, 0xfdb4, 0xfdd4, 0xfdf4, 0xfe14, 0xfe34, 0xfe54, 0xfe74,
63 0xfe8c, 0xfe9c, 0xfeac, 0xfebc, 0xfecc, 0xfedc, 0xfeec, 0xfefc,
64 0xff0c, 0xff1c, 0xff2c, 0xff3c, 0xff4c, 0xff5c, 0xff6c, 0xff7c,
65 0xff88, 0xff90, 0xff98, 0xffa0, 0xffa8, 0xffb0, 0xffb8, 0xffc0,
66 0xffc8, 0xffd0, 0xffd8, 0xffe0, 0xffe8, 0xfff0, 0xfff8, 0xfffc,
67 0x7d7c, 0x797c, 0x757c, 0x717c, 0x6d7c, 0x697c, 0x657c, 0x617c,
68 0x5d7c, 0x597c, 0x557c, 0x517c, 0x4d7c, 0x497c, 0x457c, 0x417c,
69 0x3e7c, 0x3c7c, 0x3a7c, 0x387c, 0x367c, 0x347c, 0x327c, 0x307c,
70 0x2e7c, 0x2c7c, 0x2a7c, 0x287c, 0x267c, 0x247c, 0x227c, 0x207c,
71 0x1efc, 0x1dfc, 0x1cfc, 0x1bfc, 0x1afc, 0x19fc, 0x18fc, 0x17fc,
72 0x16fc, 0x15fc, 0x14fc, 0x13fc, 0x12fc, 0x11fc, 0x10fc, 0x0ffc,
73 0x0f3c, 0x0ebc, 0x0e3c, 0x0dbc, 0x0d3c, 0x0cbc, 0x0c3c, 0x0bbc,
74 0x0b3c, 0x0abc, 0x0a3c, 0x09bc, 0x093c, 0x08bc, 0x083c, 0x07bc,
75 0x075c, 0x071c, 0x06dc, 0x069c, 0x065c, 0x061c, 0x05dc, 0x059c,
76 0x055c, 0x051c, 0x04dc, 0x049c, 0x045c, 0x041c, 0x03dc, 0x039c,
77 0x036c, 0x034c, 0x032c, 0x030c, 0x02ec, 0x02cc, 0x02ac, 0x028c,
78 0x026c, 0x024c, 0x022c, 0x020c, 0x01ec, 0x01cc, 0x01ac, 0x018c,
79 0x0174, 0x0164, 0x0154, 0x0144, 0x0134, 0x0124, 0x0114, 0x0104,
80 0x00f4, 0x00e4, 0x00d4, 0x00c4, 0x00b4, 0x00a4, 0x0094, 0x0084,
81 0x0078, 0x0070, 0x0068, 0x0060, 0x0058, 0x0050, 0x0048, 0x0040,
82 0x0038, 0x0030, 0x0028, 0x0020, 0x0018, 0x0010, 0x0008, 0x0000,
83 };
84
85 #define DPRINTF(n, fmt...) do { \
86 if (debug >= (n)) \
87 printf(fmt); \
88 } while (0)
89
90 int debug;
91
92 int
main(int argc,char * argv[])93 main(int argc, char *argv[])
94 {
95 struct audio_info ai;
96 int padfd, audiofd;
97 ssize_t n;
98 int i;
99 int nframe;
100 int outlen;
101 uint32_t *outbuf;
102 uint32_t *outp;
103 int inplen;
104 uint32_t *inpbuf;
105 uint32_t actual;
106 uint32_t expected;
107 int c;
108 enum {
109 PRE,
110 BODY,
111 POST,
112 } phase;
113
114 while ((c = getopt(argc, argv, "d")) != -1) {
115 switch (c) {
116 case 'd':
117 debug++;
118 break;
119 default:
120 errx(1, "unknown option");
121 }
122 }
123
124 /* Make input buffer (and it is also expected data). */
125 inplen = sizeof(musa) * 4;
126 inpbuf = (uint32_t *)malloc(inplen);
127 if (inpbuf == NULL)
128 err(1, "malloc: inpbuf");
129
130 /* mulaw:mono to slinear_le16:stereo */
131 for (i = 0; i < (int)sizeof(musa); i++) {
132 int16_t s = mulaw_to_slinear16[musa[i]];
133 uint32_t v = htole16((uint16_t)s);
134 inpbuf[i] = (v << 16) | v;
135 }
136
137 outlen = BUFSIZE;
138 outbuf = (uint32_t *)malloc(outlen);
139 if (outbuf == NULL)
140 err(1, "malloc: outbuf");
141
142 DPRINTF(1, "init\n");
143 rump_init();
144 padfd = rump_sys_open("/dev/pad0", O_RDONLY);
145 if (padfd == -1)
146 err(1, "open pad");
147
148 audiofd = rump_sys_open("/dev/audio0", O_RDWR);
149 if (audiofd == -1)
150 err(1, "open audio");
151
152 DPRINTF(1, "ioctl\n");
153 /* pad is SLINEAR_LE, 16bit, 2ch, 44100Hz. */
154 AUDIO_INITINFO(&ai);
155 ai.play.encoding = AUDIO_ENCODING_SLINEAR_LE;
156 ai.play.precision = 16;
157 ai.play.channels = 2;
158 ai.play.sample_rate = 44100;
159 n = rump_sys_ioctl(audiofd, AUDIO_SETINFO, &ai);
160 if (n == -1)
161 err(1, "ioctl");
162
163 DPRINTF(1, "write %d\n", inplen);
164 n = rump_sys_write(audiofd, inpbuf, inplen);
165 if (n == -1)
166 err(1, "write");
167 if (n != inplen)
168 errx(1, "write: n=%zd < %d", n, inplen);
169
170 phase = PRE;
171 i = 0;
172 nframe = 0;
173 outp = NULL;
174 for (;;) {
175 /* Read to outbuf when it is empty. */
176 if (nframe == 0) {
177 n = rump_sys_read(padfd, outbuf, outlen);
178 if (n == -1)
179 err(1, "read");
180 if (n == 0)
181 errx(1, "read: EOF");
182 /* XXX Should I recover from this? */
183 if (n % 4 != 0)
184 errx(1, "read: n=%zd", n);
185
186 nframe = n / 4;
187 outp = outbuf;
188 }
189
190 if (phase == PRE) {
191 /* Skip preceding silence part. */
192 if (*outp == 0) {
193 outp++;
194 nframe--;
195 } else {
196 /* This is the first frame. */
197 phase = BODY;
198 }
199 } else if (phase == BODY) {
200 /* Compare wavedata. */
201 expected = le32dec(outp);
202 actual = le32dec(inpbuf + i);
203 DPRINTF(2, "[%d] %08x %08x\n", i, actual, expected);
204 if (actual != expected) {
205 errx(1, "bad output [%d] %08x %08x",
206 i, actual, expected);
207 }
208 outp++;
209 nframe--;
210 i++;
211 if (i >= (int)sizeof(musa)) {
212 phase = POST;
213 i = 0;
214 }
215 } else if (phase == POST) {
216 /*
217 * There is no way to determine the end of playback.
218 * Therefore it detects and terminates with some
219 * continuous silence.
220 */
221 actual = le32dec(outp);
222 if (actual != 0)
223 errx(1, "bad post output: %08x", actual);
224 outp++;
225 nframe--;
226 i++;
227 if (i >= (int)ai.play.sample_rate / 100)
228 break;
229 }
230 }
231 DPRINTF(1, "success\n");
232 return 0;
233 }
234