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triple: add necessary locking for inbuf_pos in cPlayback

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This commit is contained in:
Stefan Seyfried
2012-07-14 10:54:01 +02:00
parent 2d52b68c2d
commit 618d1d6525
1 changed files with 17 additions and 2 deletions
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19
libtriple/playback_td.cpp
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@@ -28,6 +28,7 @@ static pthread_cond_t playback_ready_cond = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t playback_ready_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t currpos_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t inbufpos_mutex = PTHREAD_MUTEX_INITIALIZER;
static int dvrfd = -1;
static int streamtype;
@@ -295,7 +296,10 @@ void cPlayback::playthread(void)
if (playstate == STATE_INIT)
{
/* hack for timeshift to determine start PTS */
if (inbuf_read() < 0)
pthread_mutex_lock(&inbufpos_mutex);
ret = inbuf_read();
pthread_mutex_unlock(&inbufpos_mutex);
if (ret < 0)
break;
usleep(100000);
if (pts_start == -1)
@@ -308,7 +312,10 @@ void cPlayback::playthread(void)
usleep(1);
continue;
}
if (inbuf_read() < 0)
pthread_mutex_lock(&inbufpos_mutex);
ret = inbuf_read();
pthread_mutex_unlock(&inbufpos_mutex);
if (ret < 0)
break;
/* autoselect PID for PLAYMODE_FILE */
@@ -326,9 +333,13 @@ void cPlayback::playthread(void)
}
}
pthread_mutex_lock(&inbufpos_mutex);
towrite = inbuf_pos / 188 * 188; /* TODO: smaller chunks? */
if (towrite == 0)
{
pthread_mutex_unlock(&inbufpos_mutex);
continue;
}
retry:
ret = write(dvrfd, inbuf, towrite);
if (ret < 0)
@@ -340,6 +351,7 @@ void cPlayback::playthread(void)
}
memmove(inbuf, inbuf + ret, inbuf_pos - ret);
inbuf_pos -= ret;
pthread_mutex_unlock(&inbufpos_mutex);
}
pthread_cleanup_pop(1);
@@ -597,12 +609,14 @@ off_t cPlayback::seek_to_pts(int64_t pts)
newpos = mp_seekSync(newpos);
if (newpos < 0)
return newpos;
pthread_mutex_lock(&inbufpos_mutex);
inbuf_pos = 0;
inbuf_sync = 0;
while (inbuf_pos < INBUF_SIZE * 8 / 10) {
if (inbuf_read() <= 0)
break; // EOF
}
pthread_mutex_unlock(&inbufpos_mutex);
if (pts_curr < pts_start)
tmppts = pts_curr + 0x200000000ULL - pts_start;
else
@@ -786,6 +800,7 @@ int64_t cPlayback::get_PES_PTS(uint8_t *buf, int len, bool last)
return pts;
}
/* needs to be called with inbufpos_mutex locked! */
ssize_t cPlayback::inbuf_read()
{
if (filetype == FILETYPE_UNKNOWN)