Module Name: src
Committed By: nat
Date: Thu Jul 20 12:33:28 UTC 2023
Modified Files:
src/usr.sbin/bta2dpd/bta2dpd: sbc_encode.c
Log Message:
Add thottling when playing from file.
This avoids rapid playback when playing from file with affected devices.
Playback using pad(4) is still preferred ad gives a better result.
Playback from pad(4) is unaffected by this change.
XXX pullup-10.
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 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:1.11 src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c:1.12
--- src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c:1.11 Sun May 28 07:59:17 2023
+++ src/usr.sbin/bta2dpd/bta2dpd/sbc_encode.c Thu Jul 20 12:33:27 2023
@@ -1,4 +1,4 @@
-/* $NetBSD: sbc_encode.c,v 1.11 2023/05/28 07:59:17 mlelstv Exp $ */
+/* $NetBSD: sbc_encode.c,v 1.12 2023/07/20 12:33:27 nat Exp $ */
/*-
* Copyright (c) 2015 - 2016 Nathanial Sloss <[email protected]>
@@ -32,6 +32,7 @@
*/
#include <sys/cdefs.h>
+#include <sys/time.h>
#include <sys/types.h>
#include <sys/param.h>
#include <errno.h>
@@ -841,6 +842,7 @@ stream(int in, int outfd, uint8_t mode,
blocks, uint8_t alloc_method, uint8_t bitpool, size_t mtu, int volume)
{
struct rtpHeader myHeader;
+ struct timeval myTime;
uint8_t *whole, *frameData;
int16_t music[2048];
ssize_t len, mySize[16], offset, next_pkt;
@@ -849,6 +851,7 @@ stream(int in, int outfd, uint8_t mode,
size_t frequency;
static size_t ts = 0;
static uint16_t seqnumber = 0;
+ static time_t prevTime, readTime, sleepTime, timeNow;
int numpkts, tries;
global_mode = mode;
@@ -912,9 +915,11 @@ stream(int in, int outfd, uint8_t mode,
next_pkt = 0;
len = 0;
pkt_len = 80;
+ readTime = 0;
while (totalSize + ((size_t)pkt_len * 2) <= mtu) {
len = readloop(in, music, readsize);
+ readTime += (time_t)readsize;
if (len < (int)readsize)
break;
@@ -934,6 +939,8 @@ stream(int in, int outfd, uint8_t mode,
return -1;
}
+ readTime = readTime * 1000000 / 2 / global_chan / (time_t)frequency;
+
myHeader.numFrames = (uint8_t)numpkts;
whole = malloc(totalSize);
if (whole == NULL)
@@ -946,6 +953,20 @@ stream(int in, int outfd, uint8_t mode,
free(frameData);
tries = 1;
+
+ /* Wait if necessary to avoid rapid playback. */
+ gettimeofday(&myTime, NULL);
+ timeNow = myTime.tv_sec * 1000000 + myTime.tv_usec;
+ if (prevTime == 0)
+ prevTime = timeNow;
+ else
+ sleepTime += readTime - (timeNow - prevTime);
+ if (sleepTime >= 1000) {
+ usleep(500);
+ sleepTime -= 1000;
+ }
+ prevTime = timeNow;
+
send_again:
len = write(outfd, whole, totalSize);
