[src/trunk]: src/tests/dev/audio Update AUDIO_SETINFO_channels test.

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cc85e9435332
branches:  trunk
changeset: 745043:cc85e9435332
user:      isaki <isaki%NetBSD.org@localhost>
date:      Sat Feb 22 05:53:19 2020 +0000

description:
Update AUDIO_SETINFO_channels test.
The kernel limits the number of channels that userland apps can set to
the number of channels supported by the hardware or less.

diffstat:

 tests/dev/audio/audiotest.c |  61 ++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 55 insertions(+), 6 deletions(-)

diffs (109 lines):

diff -r e4b9ae6d219b -r cc85e9435332 tests/dev/audio/audiotest.c
--- a/tests/dev/audio/audiotest.c       Sat Feb 22 05:51:39 2020 +0000
+++ b/tests/dev/audio/audiotest.c       Sat Feb 22 05:53:19 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audiotest.c,v 1.5 2020/02/18 12:11:26 isaki Exp $      */
+/*     $NetBSD: audiotest.c,v 1.6 2020/02/22 05:53:19 isaki Exp $      */
 
 /*
  * Copyright (C) 2019 Tetsuya Isaki. All rights reserved.
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: audiotest.c,v 1.5 2020/02/18 12:11:26 isaki Exp $");
+__RCSID("$NetBSD: audiotest.c,v 1.6 2020/02/22 05:53:19 isaki Exp $");
 
 #include <errno.h>
 #include <fcntl.h>
@@ -5413,11 +5413,13 @@
  */
 DEF(AUDIO_SETINFO_channels)
 {
+       struct audio_info hwinfo;
        struct audio_info ai;
        int mode;
        int r;
        int fd;
        int i;
+       unsigned int ch;
        struct {
                int ch;
                bool expected;
@@ -5425,9 +5427,6 @@
                {  0,   false },
                {  1,   true }, /* monaural */
                {  2,   true }, /* stereo */
-               {  3,   true }, /* multi channels */
-               { 12,   true }, /* upper limit */
-               { 13,   false },
        };
 
        TEST("AUDIO_SETINFO_channels");
@@ -5444,8 +5443,12 @@
        fd = OPEN(devaudio, mode);
        REQUIRED_SYS_OK(fd);
 
+       /*
+        * The audio layer always supports monaural and stereo regardless of
+        * the hardware capability.
+        */
        for (i = 0; i < (int)__arraycount(table); i++) {
-               int ch = table[i].ch;
+               ch = table[i].ch;
                bool expected = table[i].expected;
 
                AUDIO_INITINFO(&ai);
@@ -5470,6 +5473,52 @@
                }
        }
 
+       /*
+        * The maximum number of supported channels depends the hardware.
+        */
+       /* Get the number of channels that the hardware supports */
+       r = IOCTL(fd, AUDIO_GETFORMAT, &hwinfo, "");
+       REQUIRED_SYS_EQ(0, r);
+
+       if ((hwinfo.mode & AUMODE_PLAY)) {
+               DPRINTF("  > hwinfo.play.channels = %d\n",
+                   hwinfo.play.channels);
+               for (ch = 3; ch <= hwinfo.play.channels; ch++) {
+                       AUDIO_INITINFO(&ai);
+                       ai.play.channels = ch;
+                       r = IOCTL(fd, AUDIO_SETINFO, &ai, "channels=%d", ch);
+                       XP_SYS_EQ(0, r);
+
+                       r = IOCTL(fd, AUDIO_GETBUFINFO, &ai, "");
+                       XP_SYS_EQ(0, r);
+                       XP_EQ(ch, ai.play.channels);
+               }
+
+               AUDIO_INITINFO(&ai);
+               ai.play.channels = ch;
+               r = IOCTL(fd, AUDIO_SETINFO, &ai, "channels=%d", ch);
+               XP_SYS_NG(EINVAL, r);
+       }
+       if ((hwinfo.mode & AUMODE_RECORD)) {
+               DPRINTF("  > hwinfo.record.channels = %d\n",
+                   hwinfo.record.channels);
+               for (ch = 3; ch <= hwinfo.record.channels; ch++) {
+                       AUDIO_INITINFO(&ai);
+                       ai.record.channels = ch;
+                       r = IOCTL(fd, AUDIO_SETINFO, &ai, "channels=%d", ch);
+                       XP_SYS_EQ(0, r);
+
+                       r = IOCTL(fd, AUDIO_GETBUFINFO, &ai, "");
+                       XP_SYS_EQ(0, r);
+                       XP_EQ(ch, ai.record.channels);
+               }
+
+               AUDIO_INITINFO(&ai);
+               ai.record.channels = ch;
+               r = IOCTL(fd, AUDIO_SETINFO, &ai, "channels=%d", ch);
+               XP_SYS_NG(EINVAL, r);
+       }
+
        r = CLOSE(fd);
        XP_SYS_EQ(0, r);
 }