Module Name: src
Committed By: mlelstv
Date: Sun May 28 07:59:17 UTC 2023
Modified Files:
src/usr.sbin/bta2dpd/bta2dpd: sbc_encode.c
Log Message:
With the latest changes, pad(4) will return partial reads to allow a
more fine grained pacing of audio data. But this broke bta2dpd which
relied on full buffers returned (like reading from a file).
Replace the single read() in bta2dpd with a loop that fetches a full
buffer. This restores the old behaviour but loops in userland instead
of the kernel at the cost of a few extra system calls.
To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c
diff -u src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c:1.10 src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c:1.11
--- src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c:1.10 Sat Sep 21 00:01:33 2019
+++ src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c Sun May 28 07:59:17 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: sbc_encode.c,v 1.10 2019/09/21 00:01:33 nat Exp $ */
+/* $NetBSD: sbc_encode.c,v 1.11 2023/05/28 07:59:17 mlelstv Exp $ */
/*-
* Copyright (c) 2015 - 2016 Nathanial Sloss <[email protected]>
@@ -813,6 +813,29 @@ make_frame(uint8_t *frame, int16_t *inpu
return frame - frameStart;
}
+static ssize_t
+readloop(int fd, void *buf, size_t nbytes)
+{
+ size_t count;
+ ssize_t ret;
+
+ count = 0;
+ while (nbytes > 0) {
+ ret = read(fd, ((char *)buf) + count, nbytes);
+ if (ret < 0) {
+ if (count == 0)
+ return ret;
+ break;
+ }
+ if (ret == 0)
+ break;
+ count += (size_t)ret;
+ nbytes -= (size_t)ret;
+ }
+
+ return (ssize_t) count;
+}
+
ssize_t
stream(int in, int outfd, uint8_t mode, uint8_t freq, uint8_t bands, uint8_t
blocks, uint8_t alloc_method, uint8_t bitpool, size_t mtu, int volume)
@@ -891,7 +914,7 @@ stream(int in, int outfd, uint8_t mode,
pkt_len = 80;
while (totalSize + ((size_t)pkt_len * 2) <= mtu) {
- len = read(in, music, readsize);
+ len = readloop(in, music, readsize);
if (len < (int)readsize)
break;
