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Provide a small workarround to fix a bug in the pcm driver. The driver seems

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need at least two write() calls for sound to be actually played.

I have notified Cameron Grant <cg@FreeBSD.org> about the issue.
This commit is contained in:
Maxim Sobolev 2000-05-24 08:26:15 +00:00
parent 63caeafa47
commit 40e295b0f7
Notes: svn2git 2021-03-31 03:12:20 +00:00 
svn path=/head/; revision=28724
1 changed files with 44 additions and 0 deletions
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44
audio/wsoundserver/files/patch-ae Normal file
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@ -0,0 +1,44 @@
--- wslib/audio_voxware.c.orig Fri Mar 31 23:14:40 2000
+++ wslib/audio_voxware.c Wed May 24 11:08:24 2000
@@ -403,6 +403,7 @@
long blkFrames; /* number of frames in current audio block */
int blockSize = 8192; /* Size of an audio block buffer in frames */
int i;
+ u_int8_t fakebuffer[2] = {0, 0};
#ifdef DEBUG
fprintf(stderr, " >> writing data\n");
@@ -413,7 +414,11 @@
SErrorCode = SERR_NOMEMORY;
return -1;
}
-
+
+ /* Following line is a simple workarround for buggy pcm driver, which seens need at least to write()
+ calls for sound to be actually played */
+ write(audiofd, fakebuffer, 2);
+
curFrame = 0;
while (curFrame < afInfo->FrameCount) {
if ((blkFrames = (afInfo->FrameCount - curFrame)) > blockSize) {
@@ -503,6 +508,7 @@
long blkFrames; /* number of frames in current audio block */
int blockSize = 4096; /* Size of an audio block buffer in frames */
int i;
+ u_int16_t fakebuffer[2] = {0, 0};
#ifdef DEBUG
fprintf(stderr, " >> writing data\n");
@@ -513,7 +519,11 @@
SErrorCode = SERR_NOMEMORY;
return -1;
}
-
+
+ /* Following line is a simple workarround for buggy pcm driver, which seens need at least to write()
+ calls for sound to be actually played */
+ write(audiofd, fakebuffer, 4);
+
curFrame = 0;
while (curFrame < afInfo->FrameCount) {
if ((blkFrames = (afInfo->FrameCount - curFrame)) > blockSize) {